diff --git a/.clang-format b/.clang-format new file mode 100644 index 0000000..7b9d32c --- /dev/null +++ b/.clang-format @@ -0,0 +1,58 @@ +# Generated from CLion C/C++ Code Style settings +--- +Language: Cpp +BasedOnStyle: LLVM +AccessModifierOffset: -4 +AlignConsecutiveAssignments: false +AlignConsecutiveDeclarations: false +AlignOperands: true +AlignTrailingComments: false +AlwaysBreakTemplateDeclarations: Yes +BraceWrapping: + AfterCaseLabel: false + AfterClass: false + AfterControlStatement: false + AfterEnum: false + AfterFunction: false + AfterNamespace: false + AfterStruct: false + AfterUnion: false + AfterExternBlock: false + BeforeCatch: false + BeforeElse: false + BeforeLambdaBody: false + BeforeWhile: false + SplitEmptyFunction: true + SplitEmptyRecord: true + SplitEmptyNamespace: true +BreakBeforeBraces: Custom +BreakConstructorInitializers: AfterColon +BreakConstructorInitializersBeforeComma: false +ColumnLimit: 120 +ConstructorInitializerAllOnOneLineOrOnePerLine: false +ContinuationIndentWidth: 8 +IncludeCategories: + - Regex: '^<.*' + Priority: 1 + - Regex: '^".*' + Priority: 2 + - Regex: '.*' + Priority: 3 +IncludeIsMainRegex: '([-_](test|unittest))?$' +IndentCaseLabels: true +IndentWidth: 4 +InsertNewlineAtEOF: true +MacroBlockBegin: '' +MacroBlockEnd: '' +MaxEmptyLinesToKeep: 2 +NamespaceIndentation: All +SpaceAfterCStyleCast: true +SpaceAfterTemplateKeyword: false +SpaceBeforeRangeBasedForLoopColon: false +SpaceInEmptyParentheses: false +SpacesInAngles: false +SpacesInConditionalStatement: false +SpacesInCStyleCastParentheses: false +SpacesInParentheses: false +TabWidth: 4 +... diff --git a/.gitignore b/.gitignore index 0758274..012878a 100644 --- a/.gitignore +++ b/.gitignore @@ -1,22 +1,6 @@ -# IDE Files -.vscode/ -.jb/ +# IDE Generated Files +cmake-build-debug/ .idea/ -# Build directories -build/ -build-vs/ -build-debug/ -build-release/ -build-minsizerel/ -cmake-build-debug/ -build*/ - -# Tooling files -output.txt -buildall.bat -typer.py - -# Sandbox Assets -assets/ -art/ +# Build folders +*build/ diff --git a/CMakeLists.txt b/CMakeLists.txt index fd9e2ad..774bfa9 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -1,242 +1,105 @@ -cmake_minimum_required(VERSION 3.28) +CMAKE_MINIMUM_REQUIRED(VERSION 3.28) # Required for modern cpp modules support +PROJECT(ICEngine LANGUAGES CXX C) -project(IsoEngine LANGUAGES CXX) +# Read version for logger +FILE(READ "${CMAKE_CURRENT_SOURCE_DIR}/VERSION" VERSION_TEXT) +STRING(STRIP "${VERSION_TEXT}" VERSION_TEXT) +STRING(REGEX MATCH "([A-Z]+)-([0-9]+)\\.([0-9]+)\\.([0-9]+)" _ ${VERSION_TEXT}) +SET(PROJECT_VERSION ${CMAKE_MATCH_1}-${CMAKE_MATCH_2}.${CMAKE_MATCH_3}.${CMAKE_MATCH_4}) +ADD_DEFINITIONS(-DPROJECT_VERSION=\"${PROJECT_VERSION}\") -# Options for shared/static libraries, and client/server examples -option(BUILD_SHARED_LIBS "Build engine library dependencies as shared (DLLs)" OFF) -option(BUILD_CLIENT "Build the client example" ON) -option(BUILD_SERVER "Build the server example" ON) +OPTION(BUILD_ENGINE_AS_SHARED_LIBRARY "Build engine as a shared library" OFF) +OPTION(BUILD_DEPS_AS_SHARED_LIBRARIES "Builds engine's dependencies as shared libraries" OFF) +OPTION(BUILD_EXAMPLES "Builds examples to showcase engine" OFF) +OPTION(INSTALL_ICENGINE "Install ICEngine as a package" ON) -if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES) - message(STATUS "No build type specified, defaulting to Debug") - set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Choose the type of build." FORCE) -endif() +IF (CMAKE_GENERATOR MATCHES "Visual Studio|Xcode") + SET(CMAKE_CONFIGURATION_TYPES "Debug;Release;MinSizeRel" CACHE STRING "" FORCE) +ELSE () + IF (NOT CMAKE_BUILD_TYPE) + MESSAGE(" | ICEngine | No build type specified, defaulting to Debug") + SET(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Choose the type of build: Debug, Release, MinSizeRel" FORCE) + ENDIF () +ENDIF () -set(CMAKE_CXX_STANDARD 20) -set(CMAKE_CXX_STANDARD_REQUIRED ON) -set(CMAKE_XCODE_GENERATE_SCHEME ON) -set(CMAKE_EXPORT_COMPILE_COMMANDS ON) +SET(ARCHITECTURE "x64") +SET(CMAKE_CXX_STANDARD 20) +SET(CMAKE_CXX_STANDARD_REQUIRED ON) +SET(CMAKE_XCODE_GENERATE_SCHEME ON) +SET(CMAKE_EXPORT_COMPILE_COMMANDS ON) +SET(CMAKE_POSITION_INDEPENDENT_CODE ON) -# Output directory settings -set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) -set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib) -set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib) +MESSAGE(STATUS "Building for x64 architecture") +SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m64") +SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m64") -if(POLICY CMP0077) - cmake_policy(SET CMP0077 NEW) -endif() +SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${ARCH_DIR}/bin) +SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${ARCH_DIR}/lib) +SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${ARCH_DIR}/lib) -set(FETCHCONTENT_QUIET OFF) -include(FetchContent) +IF (MSVC) + ADD_COMPILE_OPTIONS(/W4 /WX) +ELSE () + ADD_COMPILE_OPTIONS(-Wall -Wextra -Werror -Wpedantic) +ENDIF () -# enet is header-only -set(ENET_INCLUDE_DIR "${CMAKE_CURRENT_LIST_DIR}/vendor/enet") +IF (CMAKE_CXX_COMPILER_ID MATCHES "GNU") + ADD_COMPILE_OPTIONS(-fmodules-ts) +ELSEIF (CMAKE_CXX_COMPILER_ID MATCHES "Clang") + ADD_COMPILE_OPTIONS(-fmodules) +ENDIF () -FetchContent_Declare( - raylib - URL https://github.com/raysan5/raylib/archive/refs/tags/5.0.zip -) -set(BUILD_EXAMPLES OF CACHE BOOL "" FORCE) -set(SUPPORT_EVENTS_WAITING ON CACHE BOOL "" FORCE) -set(SUPPORT_BUSY_WAIT_LOOP OFF CACHE BOOL "" FORCE) - -if (BUILD_SHARED_LIBS) - set(RAYLIB_LIBTYPE SHARED) -endif() -FetchContent_MakeAvailable(raylib) - -FetchContent_Declare( - imgui - GIT_REPOSITORY https://github.com/ocornut/imgui.git - GIT_TAG v1.91.1 - GIT_SHALLOW TRUE -) -FetchContent_MakeAvailable(imgui) - -add_library(ImGui ${imgui_SOURCE_DIR}/imgui.cpp - ${imgui_SOURCE_DIR}/imgui_demo.cpp - ${imgui_SOURCE_DIR}/imgui_draw.cpp - ${imgui_SOURCE_DIR}/imgui_tables.cpp - ${imgui_SOURCE_DIR}/imgui_widgets.cpp -) -target_include_directories(ImGui PUBLIC ${imgui_SOURCE_DIR}) - -FetchContent_Declare( - rlimgui - GIT_REPOSITORY https://github.com/raylib-extras/rlImGui.git - GIT_TAG main - GIT_SHALLOW TRUE -) -FetchContent_MakeAvailable(rlimgui) - -FetchContent_Declare( - box2d - GIT_REPOSITORY https://github.com/erincatto/box2d.git - GIT_TAG v3.0.0 -) -FetchContent_MakeAvailable(box2d) - -FetchContent_Declare( - entt - GIT_REPOSITORY https://github.com/skypjack/entt.git - GIT_TAG v3.13.2 -) -FetchContent_MakeAvailable(entt) - -FetchContent_Declare( - physfs - GIT_REPOSITORY https://github.com/icculus/physfs.git - GIT_TAG release-3.2.0 -) -# PhysFS settings (default: static) -set(PHYSFS_BUILD_STATIC ON CACHE BOOL "Build PhysFS static library" FORCE) -set(PHYSFS_BUILD_SHARED OFF CACHE BOOL "Do not build PhysFS shared library" FORCE) -if(BUILD_SHARED_LIBS) - set(PHYSFS_BUILD_SHARED ON CACHE BOOL "Build PhysFS shared library" FORCE) - set(PHYSFS_BUILD_STATIC OFF CACHE BOOL "Do not build PhysFS static library" FORCE) -endif() -set(PHYSFS_BUILD_TEST OFF CACHE BOOL "Disable PhysFS test program" FORCE) -FetchContent_MakeAvailable(physfs) - -# Main Engine Library -set(ENGINE_SOURCES - src/IsoEngine.cpp - src/enet_client.cpp - src/enet_server.cpp - - src/Logger.cpp - - src/components/sprite_component.cpp - src/components/physics_component.cpp - src/components/input_component.cpp - src/components/ui_component.cpp - - src/scene_manager.cpp - src/filepacker.cpp -) -if (WIN32) - list(APPEND ENGINE_SOURCES src/platform/windows/FatalHandlerWindows.cpp) -elseif(UNIX) - list(APPEND ENGINE_SOURCES src/platform/posix/FatalHandlerPosix.cpp) -endif() - -add_library(IsoEngine ${ENGINE_SOURCES}) - -target_include_directories(IsoEngine PUBLIC - ${CMAKE_CURRENT_LIST_DIR}/src - ${CMAKE_CURRENT_LIST_DIR}/src/components - ${raylib_SOURCE_DIR} - ${imgui_SOURCE_DIR} - ${rlimgui_SOURCE_DIR} - ${box2d_SOURCE_DIR}/include - ${physfs_SOURCE_DIR}/src - ${entt_SOURCE_DIR}/src - ${ENET_INCLUDE_DIR} +INCLUDE_DIRECTORIES( + engine/src/ ) -target_link_libraries(IsoEngine PRIVATE raylib box2d EnTT::EnTT) -target_precompile_headers(IsoEngine PRIVATE src/IsoEnginePCH.h) +IF (BUILD_ENGINE_AS_SHARED_LIBRARY) + ADD_LIBRARY(ICEngine SHARED) + SET_TARGET_PROPERTIES(ICEngine PROPERTIES + OUTPUT_NAME "ICEngine" + WINDOWS_EXPORT_ALL_SYMBOLS ON + ) +ELSE () + ADD_LIBRARY(ICEngine STATIC) + SET_TARGET_PROPERTIES(ICEngine PROPERTIES OUTPUT_NAME "ICEngine") +ENDIF () -# PhysFS linkage -if(BUILD_SHARED_LIBS) - target_link_libraries(IsoEngine PRIVATE PhysFS::PhysFS) -else() - target_link_libraries(IsoEngine PRIVATE PhysFS::PhysFS-static) - target_compile_definitions(IsoEngine PRIVATE PHYSFS_STATIC) -endif() +TARGET_SOURCES(ICEngine + PUBLIC + FILE_SET CXX_MODULES + BASE_DIRS engine/src + FILES engine/src/core/ICEngine.ixx +) -# rlImGui library linking -add_library(rlImGui ${rlimgui_SOURCE_DIR}/rlImGui.cpp) -target_include_directories(rlImGui PUBLIC ${rlimgui_SOURCE_DIR} ${imgui_SOURCE_DIR}) -target_link_libraries(rlImGui PRIVATE raylib ImGui) -target_link_libraries(IsoEngine PRIVATE ImGui rlImGui) +TARGET_INCLUDE_DIRECTORIES(ICEngine + PUBLIC + $ + $ +) -# Example executables (client/server) -if(BUILD_CLIENT) - # Client executable - set(CLIENT_SOURCE "${CMAKE_CURRENT_LIST_DIR}/sandbox/client.cpp") - add_executable(client ${CLIENT_SOURCE}) - target_include_directories(client PRIVATE ${ENET_INCLUDE_DIR}) - target_link_libraries(client PRIVATE IsoEngine raylib) +IF (BUILD_EXAMPLES) + ADD_SUBDIRECTORY(examples) +ENDIF () - # Platform-specific linking for client (Windows) - if(WIN32) - target_link_libraries(client PRIVATE winmm ws2_32) - endif() +IF (INSTALL_ICENGINE) + INSTALL(TARGETS ICEngine + EXPORT ICEngineTargets + LIBRARY DESTINATION lib + ARCHIVE DESTINATION lib + RUNTIME DESTINATION bin + FILE_SET CXX_MODULES DESTINATION include/icengine/modules + ) - # Server executable - set(SERVER_SOURCE "${CMAKE_CURRENT_LIST_DIR}/sandbox/server.cpp") - add_executable(server ${SERVER_SOURCE}) - target_include_directories(server PRIVATE ${ENET_INCLUDE_DIR}) - target_link_libraries(server PRIVATE IsoEngine) + INSTALL(FILES engine/src/core/Logger.hpp DESTINATION include/icengine) - # Platform-specific linking for server (Windows) - if(WIN32) - target_link_libraries(server PRIVATE winmm ws2_32) - endif() -endif() + INSTALL(EXPORT ICEngineTargets + FILE ICEngineConfig.cmake + NAMESPACE ICEngine:: + DESTINATION lib/cmake/ICEngine + ) -# Platform-specific linking for IsoEngine (Raylib and Winsock for ENet on Windows) -if(WIN32) - target_link_libraries(IsoEngine PRIVATE winmm ws2_32) - add_definitions(-DWIN32_LEAN_AND_MEAN) - add_definitions(-D_WINSOCK_DEPRECATED_NO_WARNINGS) - add_definitions(-D_HAS_EXCEPTIONS=0) -elseif(APPLE) - target_link_libraries(IsoEngine PRIVATE "-framework CoreVideo" "-framework IOKit" "-framework Cocoa" "-framework GLUT" "-framework OpenGL") -else() - target_link_libraries(IsoEngine PRIVATE m pthread GL dl X11) -endif() - -# Build Configuration Optimizations -if(CMAKE_BUILD_TYPE STREQUAL "Debug") - message(STATUS "Configuring Debug build: No optimizations applied.") - target_compile_definitions(IsoEngine PRIVATE ENABLE_LOGGING) -elseif(CMAKE_BUILD_TYPE STREQUAL "Release") - message(STATUS "Configuring Release build: Applying moderate optimizations.") - target_compile_options(IsoEngine PRIVATE -O2) - if(BUILD_CLIENT OR BUILD_SANDBOX) - target_compile_options(client PRIVATE -O2) - target_compile_options(server PRIVATE -O2) - endif() - - # Strip symbols after building - if(NOT MSVC) - add_custom_command(TARGET IsoEngine POST_BUILD - COMMAND ${CMAKE_STRIP} --strip-unneeded $ - COMMENT "Stripping unneeded symbols from the IsoEngine binary in Release build." - ) - if(BUILD_CLIENT OR BUILD_SANDBOX) - add_custom_command(TARGET client POST_BUILD - COMMAND ${CMAKE_STRIP} --strip-unneeded $ - COMMENT "Stripping unneeded symbols from the client binary in Release build." - ) - add_custom_command(TARGET server POST_BUILD - COMMAND ${CMAKE_STRIP} --strip-unneeded $ - COMMENT "Stripping unneeded symbols from the server binary in Release build." - ) - endif() - endif() -elseif(CMAKE_BUILD_TYPE STREQUAL "MinSizeRel") - message(STATUS "Configuring MinSizeRel build: Applying aggressive size optimizations.") - target_compile_options(IsoEngine PRIVATE -Os -ffunction-sections -fdata-sections) - target_link_options(IsoEngine PRIVATE -Wl,--gc-sections -Wl,--as-needed) - - # Strip symbols aggressively after building - if(NOT MSVC) - add_custom_command(TARGET IsoEngine POST_BUILD - COMMAND ${CMAKE_STRIP} --strip-all $ - COMMENT "Stripping all symbols from the IsoEngine binary in MinSizeRel build." - ) - if(BUILD_CLIENT OR BUILD_SANDBOX) - add_custom_command(TARGET client POST_BUILD - COMMAND ${CMAKE_STRIP} --strip-all $ - COMMENT "Stripping all symbols from the client binary in MinSizeRel build." - ) - add_custom_command(TARGET server POST_BUILD - COMMAND ${CMAKE_STRIP} --strip-all $ - COMMENT "Stripping all symbols from the server binary in MinSizeRel build." - ) - endif() - endif() -endif() + EXPORT(EXPORT ICEngineTargets + FILE ${CMAKE_BINARY_DIR}/ICEngineConfig.cmake + NAMESPACE ICEngine:: + ) +ENDIF () diff --git a/README.md b/README.md index 5fa1961..0d4ec65 100644 --- a/README.md +++ b/README.md @@ -1,8 +1,9 @@ -# Iso Engine +# ICEngine Smol little game engine since I have no idea what I'm doing # Notice: Since this uses the newer cpp modules, you need to make sure your compiler + build system + IDE supports this. You can -find more info [on this stack overflow post](https://stackoverflow.com/questions/57300495/how-to-use-c20-modules-with-cmake). +find more +info [on this stack overflow post](https://stackoverflow.com/questions/57300495/how-to-use-c20-modules-with-cmake). diff --git a/docs/ideas.md b/docs/ideas.md deleted file mode 100644 index 6a67cb2..0000000 --- a/docs/ideas.md +++ /dev/null @@ -1,20 +0,0 @@ -# Ideas for this/future engine -Also just an outline for stuff - -- Custom Logger -- CMake / Premake / XMake -- Event System -- Window Handler (support multiple windows) -- Layer system -- Math helpers -- Static/Dynamic linking -- Export or Build (export game as game file, or build your own exe directly) -- Shader System -- Entity Component System? -- Profiling -- Scripting? (lua?) + while-running / preprocessed scripts -- Tools (Sprite Sheet Tools, etc) -- Asset Manager / Pipeline (choose between .pak or individual files) -- Physics -- Collision Detection - diff --git a/sandbox/client.cpp b/sandbox/client.cpp deleted file mode 100644 index cd7279e..0000000 --- a/sandbox/client.cpp +++ /dev/null @@ -1,99 +0,0 @@ -#include "IsoEngine.h" -#include "components.h" - -#include - -#define ENABLE_LOGGING - -enum class MenuState { - MAIN_MENU, - OPTIONS, - QUIT -}; - -int main() { - int screenWidth = 800; - int screenHeight = 600; - IsoEngine engine(screenWidth, screenHeight, nullptr); - engine.Initialize(); - - SceneManager& sceneManager = engine.GetSceneManager(); - entt::entity mainMenuScene = sceneManager.CreateScene(); - - auto& registry = engine.GetRegistry(); - - // Button dimensions - float buttonWidth = 200.0f; - float buttonHeight = 50.0f; - float spacing = 20.0f; // Vertical spacing between buttons - - // Center X position - float centerX = screenWidth / 2 - buttonWidth / 2; - - // Y positions for each button - float singlePlayerY = screenHeight / 2 - (buttonHeight + spacing); - float quitButtonY = screenHeight / 2 + (buttonHeight + spacing); - - // Create a UI button for "Single Player" - entt::entity singlePlayerButton = registry.create(); - registry.emplace(singlePlayerButton, centerX, singlePlayerY, 1.0f, 1.0f, 0.0f); // Centered horizontally - registry.emplace(singlePlayerButton, "Single Player", buttonWidth, buttonHeight, [&]() { - std::cout << "Single Player button clicked!" << std::endl; - }); - registry.emplace(singlePlayerButton, 1); // Main menu on layer 1 - - // Create a "Quit" button - entt::entity quitButton = registry.create(); - registry.emplace(quitButton, centerX, quitButtonY, 1.0f, 1.0f, 0.0f); // Centered horizontally - registry.emplace(quitButton, "Quit", buttonWidth, buttonHeight, [&]() { - engine.Shutdown(); - }); - registry.emplace(quitButton, 1); // Also on layer 1 - - // Create an "F3" debug overlay on a higher layer - entt::entity debugOverlay = registry.create(); - registry.emplace(debugOverlay, 10.0f, 10.0f, 1.0f, 1.0f, 0.0f); // Placed at top-left corner - registry.emplace(debugOverlay, "FPS: 60\nPosition: (100, 200)", 300.0f, 100.0f, nullptr); - registry.emplace(debugOverlay, 2); // Debug overlay on layer 2 - - // Set active scene to the main menu - sceneManager.SetActiveScene(mainMenuScene); - - // Run the engine loop - engine.Run(); - - engine.Shutdown(); - return 0; -} - - - - // entt::entity gameScene = sceneManager.CreateScene(); - // sceneManager.SetActiveScene(gameScene); - // - // entt::entity player = engine.GetRegistry().create(); - // engine.GetRegistry().emplace(player, 400.0f, 300.0f, 1.0f, 1.0f, 0.0f); - // - // auto& inputComponent = engine.GetRegistry().emplace(player); - // - // inputComponent.BindKey(InputAction::MOVE_UP, KEY_W); - // inputComponent.BindKey(InputAction::MOVE_DOWN, KEY_S); - // inputComponent.BindKey(InputAction::MOVE_LEFT, KEY_A); - // inputComponent.BindKey(InputAction::MOVE_RIGHT, KEY_D); - // - // inputComponent.SetActionCallback(InputAction::MOVE_UP, [&]() { - // auto& transform = engine.GetRegistry().get(player); - // transform.y -= 5.0f; - // }); - // inputComponent.SetActionCallback(InputAction::MOVE_DOWN, [&]() { - // auto& transform = engine.GetRegistry().get(player); - // transform.y += 5.0f; - // }); - // inputComponent.SetActionCallback(InputAction::MOVE_LEFT, [&]() { - // auto& transform = engine.GetRegistry().get(player); - // transform.x -= 5.0f; - // }); - // inputComponent.SetActionCallback(InputAction::MOVE_RIGHT, [&]() { - // auto& transform = engine.GetRegistry().get(player); - // transform.x += 5.0f; - // }); diff --git a/sandbox/server.cpp b/sandbox/server.cpp deleted file mode 100644 index 2b8c6ac..0000000 --- a/sandbox/server.cpp +++ /dev/null @@ -1,4 +0,0 @@ - -int main() { - return 0; -} diff --git a/src/FatalHandler.h b/src/FatalHandler.h deleted file mode 100644 index 7549b4c..0000000 --- a/src/FatalHandler.h +++ /dev/null @@ -1,19 +0,0 @@ -// -// Created by illyum on 9/13/2024. -// - -#ifndef FATALHANDLER_H -#define FATALHANDLER_H - -#include - - -// TODO: Implement warning popup/crash handler (platform specific) -// TODO: Separate fatal handlers for core (the engine) and app (the user's app) -// maybe let the user handle their own fatal errors if they so choose, or they can use the default? similar -// to how the user has to specify an engine application -namespace IsoEngine { - void FatalHandler(const std::string& message); -}; - -#endif //FATALHANDLER_H diff --git a/src/IsoEngine.cpp b/src/IsoEngine.cpp deleted file mode 100644 index d614c61..0000000 --- a/src/IsoEngine.cpp +++ /dev/null @@ -1,68 +0,0 @@ -#include "IsoEngine.h" - -#include - -#include "components.h" -#include - -IsoEngine::IsoEngine(int screenWidth, int screenHeight, Network* network) - : screenWidth(screenWidth), screenHeight(screenHeight), network(network), sceneManager(registry) {} - -IsoEngine::~IsoEngine() { - Shutdown(); -} - -void IsoEngine::Initialize() { - InitWindow(screenWidth, screenHeight, "IsoEngine Game"); - SetTargetFPS(60); - - if (network) { - network->Initialize(); - } - Logger::GetCoreLogger().AddOutputStream(&std::cout); - Logger::GetAppLogger().AddOutputStream(&std::cout); - CORE_LOG_INFO("Engine initialized!"); -} - -void IsoEngine::Run() { - while (isRunning && !WindowShouldClose()) { - Update(); - Render(); - - if (network) { - network->ReceiveData(); - } - } -} - -void IsoEngine::Shutdown() { - sceneManager.RenderActiveScene(); - CloseWindow(); - - if (network) { - network->Shutdown(); - } - - CORE_LOG_INFO("Engine shut down"); -} - -void IsoEngine::Update() { - if (IsKeyPressed(KEY_ESCAPE)) { - isRunning = false; - } - - sceneManager.UpdateActiveScene(GetFrameTime()); - sceneManager.UpdateUI(registry); -} - -void IsoEngine::Render() { - BeginDrawing(); - ClearBackground(RAYWHITE); - - sceneManager.RenderActiveScene(); - - DrawText("IsoEngine Running!", 10, 10, 20, DARKGRAY); - sceneManager.RenderUI(registry); - DrawFPS(10, 100); - EndDrawing(); -} diff --git a/src/IsoEngine.h b/src/IsoEngine.h deleted file mode 100644 index cd195c8..0000000 --- a/src/IsoEngine.h +++ /dev/null @@ -1,30 +0,0 @@ -#pragma once - -#include -#include "network.h" -#include "scene_manager.h" - -class IsoEngine { -public: - IsoEngine(int screenWidth, int screenHeight, Network* network); - ~IsoEngine(); - - void Initialize(); - void Run(); - void Shutdown(); - - SceneManager& GetSceneManager() { return sceneManager; } - - entt::registry& GetRegistry() { return registry; } - -private: - void Update(); - void Render(); - - bool isRunning = true; - int screenWidth; - int screenHeight; - Network* network; - entt::registry registry; - SceneManager sceneManager; -}; diff --git a/src/IsoEnginePCH.h b/src/IsoEnginePCH.h deleted file mode 100644 index 72b2481..0000000 --- a/src/IsoEnginePCH.h +++ /dev/null @@ -1,28 +0,0 @@ -// -// Created by illyum on 9/12/2024. -// - -#ifndef ISOENGINEPCH_H -#define ISOENGINEPCH_H - -// #ifdef WIN32 -// #include -// #endif - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - - -#endif //ISOENGINEPCH_H diff --git a/src/Logger.cpp b/src/Logger.cpp deleted file mode 100644 index 4b47fa1..0000000 --- a/src/Logger.cpp +++ /dev/null @@ -1,63 +0,0 @@ -#include "Logger.h" -#include "FatalHandler.h" - -Logger& Logger::GetCoreLogger() { - static Logger coreLogger; - return coreLogger; -} - -Logger& Logger::GetAppLogger() { - static Logger appLogger; - return appLogger; -} - -Logger::Logger() {} - -void Logger::AddOutputStream(std::ostream* stream) { - outputStreams.push_back(stream); -} - -void Logger::SetLogLevel(LogLevel level) { - logLevel = level; -} - -void Logger::Log(LogLevel level, const std::string& message) { - if (level >= logLevel) { - LogInternal(level, message); - } -} - -void Logger::LogInternal(LogLevel level, const std::string& message) { - std::string time = GetCurrentTime(); - std::string levelStr = LevelToString(level); - - for (auto* stream : outputStreams) { - *stream << time << " [" << levelStr << "]: " << message << std::endl; - } -} - -std::string Logger::GetCurrentTime() { - auto now = std::chrono::system_clock::now(); - auto in_time_t = std::chrono::system_clock::to_time_t(now); - - std::stringstream ss; - ss << std::put_time(std::localtime(&in_time_t), "%Y/%m/%d %H:%M:%S"); - return ss.str(); -} - -std::string Logger::LevelToString(LogLevel level) { - switch (level) { - case LogLevel::TRACE_l: return "TRACE"; - case LogLevel::DEBUG_l: return "DEBUG"; - case LogLevel::INFO_l: return "INFO"; - case LogLevel::WARN_l: return "WARN"; - case LogLevel::ERROR_l: return "ERROR"; - case LogLevel::FATAL_l: return "FATAL"; - default: return "UNKNOWN"; - } -} - -template -void Logger::FatalHandler(const std::string& format, Args... args) { - IsoEngine::FatalHandler(format, args...); -} \ No newline at end of file diff --git a/src/Logger.h b/src/Logger.h deleted file mode 100644 index 07a4eb1..0000000 --- a/src/Logger.h +++ /dev/null @@ -1,77 +0,0 @@ -#pragma once - -#include - -enum class LogLevel { - TRACE_l, - DEBUG_l, - INFO_l, - WARN_l, - ERROR_l, - FATAL_l -}; - -class Logger { -public: - static Logger& GetCoreLogger(); - static Logger& GetAppLogger(); - - void Log(LogLevel level, const std::string& message); - - template - void LogFormat(LogLevel level, const std::string& format, Args&&... args) { - if (level >= logLevel) { - std::string formattedMessage = std::vformat(format, std::make_format_args(std::forward(args)...)); - LogInternal(level, formattedMessage); - } - } - - void AddOutputStream(std::ostream* stream); - void SetLogLevel(LogLevel level); - - template - static void FatalHandler(const std::string& format, Args... args); - -private: - Logger(); - void LogInternal(LogLevel level, const std::string& message); - std::string GetCurrentTime(); - std::string LevelToString(LogLevel level); - - std::vector outputStreams; - LogLevel logLevel = LogLevel::TRACE_l; -}; - -#ifdef ENABLE_LOGGING - -#define LOG_TRACE(...) Logger::GetAppLogger().LogFormat(LogLevel::TRACE_l, __VA_ARGS__) -#define LOG_DEBUG(...) Logger::GetAppLogger().LogFormat(LogLevel::DEBUG_l, __VA_ARGS__) -#define LOG_INFO(...) Logger::GetAppLogger().LogFormat(LogLevel::INFO_l, __VA_ARGS__) -#define LOG_WARN(...) Logger::GetAppLogger().LogFormat(LogLevel::WARN_l, __VA_ARGS__) -#define LOG_ERROR(...) Logger::GetAppLogger().LogFormat(LogLevel::ERROR_l, __VA_ARGS__) -#define LOG_FATAL(...) Logger::FatalHandler(__VA_ARGS__) - -#define CORE_LOG_TRACE(...) Logger::GetCoreLogger().LogFormat(LogLevel::TRACE_l, __VA_ARGS__) -#define CORE_LOG_DEBUG(...) Logger::GetCoreLogger().LogFormat(LogLevel::DEBUG_l, __VA_ARGS__) -#define CORE_LOG_INFO(...) Logger::GetCoreLogger().LogFormat(LogLevel::INFO_l, __VA_ARGS__) -#define CORE_LOG_WARN(...) Logger::GetCoreLogger().LogFormat(LogLevel::WARN_l, __VA_ARGS__) -#define CORE_LOG_ERROR(...) Logger::GetCoreLogger().LogFormat(LogLevel::ERROR_l, __VA_ARGS__) -#define CORE_LOG_FATAL(...) Logger::FatalHandler(__VA_ARGS__) - -#else - -#define LOG_TRACE(...) -#define LOG_DEBUG(...) -#define LOG_INFO(...) -#define LOG_WARN(...) -#define LOG_ERROR(...) -#define LOG_FATAL(...) Logger::FatalHandler(__VA_ARGS__) - -#define CORE_LOG_TRACE(...) -#define CORE_LOG_DEBUG(...) -#define CORE_LOG_INFO(...) -#define CORE_LOG_WARN(...) -#define CORE_LOG_ERROR(...) -#define CORE_LOG_FATAL(...) Logger::FatalHandler(__VA_ARGS__) - -#endif diff --git a/src/components.h b/src/components.h deleted file mode 100644 index 225e5bd..0000000 --- a/src/components.h +++ /dev/null @@ -1,10 +0,0 @@ -#pragma once - -#include "components/sprite_component.h" -#include "components/scene_component.h" -#include "components/transform_component.h" -#include "components/health_component.h" -#include "components/input_component.h" -#include "components/physics_component.h" -#include "components/ui_component.h" -#include "components/layer_component.h" \ No newline at end of file diff --git a/src/components/health_component.h b/src/components/health_component.h deleted file mode 100644 index 39fbff9..0000000 --- a/src/components/health_component.h +++ /dev/null @@ -1,8 +0,0 @@ -#pragma once - -struct HealthComponent { - int currentHealth; - int maxHealth; - - HealthComponent(int max) : maxHealth(max), currentHealth(max) {} -}; diff --git a/src/components/input_component.cpp b/src/components/input_component.cpp deleted file mode 100644 index 957bc92..0000000 --- a/src/components/input_component.cpp +++ /dev/null @@ -1,20 +0,0 @@ -#include "input_component.h" -#include - -void InputComponent::BindKey(InputAction action, int key) { - keyBindings[action] = key; -} - -void InputComponent::Update() { - for (const auto& [action, key] : keyBindings) { - if (IsKeyDown(key)) { - if (actionCallbacks.find(action) != actionCallbacks.end()) { - actionCallbacks[action](); - } - } - } -} - -void InputComponent::SetActionCallback(InputAction action, std::function callback) { - actionCallbacks[action] = std::move(callback); -} diff --git a/src/components/input_component.h b/src/components/input_component.h deleted file mode 100644 index 48e44eb..0000000 --- a/src/components/input_component.h +++ /dev/null @@ -1,23 +0,0 @@ -#pragma once - -enum class InputAction { - MOVE_UP, - MOVE_DOWN, - MOVE_LEFT, - MOVE_RIGHT, -}; - -class InputComponent { -public: - InputComponent() = default; - - void BindKey(InputAction action, int key); - - void Update(); - - void SetActionCallback(InputAction action, std::function callback); - -private: - std::unordered_map keyBindings; - std::unordered_map> actionCallbacks; -}; diff --git a/src/components/layer_component.h b/src/components/layer_component.h deleted file mode 100644 index 5e8e6ea..0000000 --- a/src/components/layer_component.h +++ /dev/null @@ -1,7 +0,0 @@ -#pragma once - -struct LayerComponent { - int layer; - - LayerComponent(int layer = 0) : layer(layer) {} -}; diff --git a/src/components/physics_component.cpp b/src/components/physics_component.cpp deleted file mode 100644 index 059f1d6..0000000 --- a/src/components/physics_component.cpp +++ /dev/null @@ -1,6 +0,0 @@ -#include "physics_component.h" - -void PhysicsComponent::Update(float deltaTime) { - velocityX += accelerationX * deltaTime; - velocityY += accelerationY * deltaTime; -} \ No newline at end of file diff --git a/src/components/physics_component.h b/src/components/physics_component.h deleted file mode 100644 index 730ecbd..0000000 --- a/src/components/physics_component.h +++ /dev/null @@ -1,10 +0,0 @@ -#pragma once - -struct PhysicsComponent { - float velocityX = 0.0f; - float velocityY = 0.0f; - float accelerationX = 0.0f; - float accelerationY = 0.0f; - - void Update(float deltaTime); -}; diff --git a/src/components/scene_component.cpp b/src/components/scene_component.cpp deleted file mode 100644 index 4a2fe51..0000000 --- a/src/components/scene_component.cpp +++ /dev/null @@ -1 +0,0 @@ -#include "scene_component.h" \ No newline at end of file diff --git a/src/components/scene_component.h b/src/components/scene_component.h deleted file mode 100644 index 1d4faee..0000000 --- a/src/components/scene_component.h +++ /dev/null @@ -1,5 +0,0 @@ -#pragma once - -struct SceneComponent { - bool isActive; -}; \ No newline at end of file diff --git a/src/components/sprite_component.cpp b/src/components/sprite_component.cpp deleted file mode 100644 index 4bca536..0000000 --- a/src/components/sprite_component.cpp +++ /dev/null @@ -1,18 +0,0 @@ -#include "sprite_component.h" -#include - -#include "Logger.h" -#include "transform_component.h" - - -void SpriteComponent::Render(float x, float y) const { - if (texture) { - DrawTexture(*reinterpret_cast(texture), x, y, WHITE); - } -} - -void SpriteComponent::Render(TransformComponent transform) const { - if (texture) { - DrawTexture(*reinterpret_cast(texture), transform.x, transform.y, WHITE); - } -} \ No newline at end of file diff --git a/src/components/sprite_component.h b/src/components/sprite_component.h deleted file mode 100644 index edf6f5f..0000000 --- a/src/components/sprite_component.h +++ /dev/null @@ -1,15 +0,0 @@ -#pragma once - -#include "transform_component.h" - - -struct SpriteComponent { -public: - void* texture; // void* to abstract Texture2D - void Render(float x, float y) const; - void Render(TransformComponent transform) const; -}; - -// Usage: -// SpriteComponent sprite; -// sprite.texture = static_cast(&your_texture); \ No newline at end of file diff --git a/src/components/transform_component.h b/src/components/transform_component.h deleted file mode 100644 index cb1c531..0000000 --- a/src/components/transform_component.h +++ /dev/null @@ -1,11 +0,0 @@ -#pragma once - - -class TransformComponent { -public: - float x = 0.0f; - float y = 0.0f; - float scaleX = 1.0f; - float scaleY = 1.0f; - float rotation = 0.0f; -}; diff --git a/src/components/ui_component.cpp b/src/components/ui_component.cpp deleted file mode 100644 index b8bee2c..0000000 --- a/src/components/ui_component.cpp +++ /dev/null @@ -1,5 +0,0 @@ -// -// Created by illyum on 9/12/2024. -// - -#include "ui_component.h" diff --git a/src/components/ui_component.h b/src/components/ui_component.h deleted file mode 100644 index 7ad29e6..0000000 --- a/src/components/ui_component.h +++ /dev/null @@ -1,18 +0,0 @@ -#pragma once - -enum class UIState { - NORMAL, - HOVERED, - CLICKED -}; - -struct UIComponent { - std::string text; - float width; - float height; - std::function onClick; - UIState state = UIState::NORMAL; - - UIComponent(std::string text, float width, float height, std::function onClick) - : text(std::move(text)), width(width), height(height), onClick(std::move(onClick)) {} -}; \ No newline at end of file diff --git a/src/enet_client.cpp b/src/enet_client.cpp deleted file mode 100644 index c3173ce..0000000 --- a/src/enet_client.cpp +++ /dev/null @@ -1,64 +0,0 @@ -#include "network.h" -#include -#include "Logger.h" - -class ENetClient : public Network { -public: - ENetClient() : client(nullptr), peer(nullptr) {} - - void Initialize() override { - if (enet_initialize() != 0) { - CORE_LOG_FATAL("An error occurred while initializing ENet"); - throw std::runtime_error("An error occurred while initializing ENet"); - } - - client = enet_host_create(nullptr, 1, 2, 0, 0); - if (!client) { - CORE_LOG_FATAL("An error occurred while creating the ENet client"); - throw std::runtime_error("An error occurred while initializing ENet Client"); - } - - ENetAddress address; - enet_address_set_host(&address, "localhost"); - address.port = 1234; - - peer = enet_host_connect(client, &address, 2, 0); - if (!peer) { - CORE_LOG_ERROR("No available peers for initiating connection"); - } - - CORE_LOG_TRACE("ENet client initialized and connected to server"); - } - - void Shutdown() override { - if (peer) { - enet_peer_disconnect(peer, 0); - CORE_LOG_TRACE("Disconnected from peer"); - } - enet_host_destroy(client); - enet_deinitialize(); - CORE_LOG_TRACE("ENet client shut down"); - } - - void SendData(const void* data, size_t size) override { - if (peer) { - ENetPacket* packet = enet_packet_create(data, size, ENET_PACKET_FLAG_RELIABLE); - enet_peer_send(peer, 0, packet); - CORE_LOG_TRACE("Data sent to server"); - } - } - - void ReceiveData() override { - ENetEvent event; - while (enet_host_service(client, &event, 0) > 0) { - if (event.type == ENET_EVENT_TYPE_RECEIVE) { - CORE_LOG_TRACE("Received packet: {}", std::string(reinterpret_cast(event.packet->data))); - enet_packet_destroy(event.packet); - } - } - } - -private: - ENetHost* client; - ENetPeer* peer; -}; diff --git a/src/enet_server.cpp b/src/enet_server.cpp deleted file mode 100644 index 3a519af..0000000 --- a/src/enet_server.cpp +++ /dev/null @@ -1,48 +0,0 @@ -#include "network.h" -#include - - -class ENetServer : public Network { -public: - ENetServer() : server(nullptr) {} - - void Initialize() override { - if (enet_initialize() != 0) { - std::cerr << "An error occurred while initializing ENet.\n"; - exit(EXIT_FAILURE); - } - - ENetAddress address; - address.host = ENET_HOST_ANY; - address.port = 1234; - - server = enet_host_create(&address, 32, 2, 0, 0); - if (!server) { - std::cerr << "An error occurred while trying to create the server.\n"; - exit(EXIT_FAILURE); - } - } - - void Shutdown() override { - enet_host_destroy(server); - enet_deinitialize(); - } - - void SendData(const void* data, size_t size) override { - ENetPacket* packet = enet_packet_create(data, size, ENET_PACKET_FLAG_RELIABLE); - enet_host_broadcast(server, 0, packet); - } - - void ReceiveData() override { - ENetEvent event; - while (enet_host_service(server, &event, 0) > 0) { - if (event.type == ENET_EVENT_TYPE_RECEIVE) { - std::cout << "Received packet from client: " << event.packet->data << "\n"; - enet_packet_destroy(event.packet); - } - } - } - -private: - ENetHost* server; -}; diff --git a/src/filepacker.cpp b/src/filepacker.cpp deleted file mode 100644 index 22c4aab..0000000 --- a/src/filepacker.cpp +++ /dev/null @@ -1,193 +0,0 @@ -// -// Created by illyum on 9/13/2024. -// - -#include "filepacker.h" - -#include "Logger.h" - -bool FilePacker::Pack(const std::string &directoryPath, const std::string &outputBapFile) { - BapHeader header; - std::ofstream outputFile(outputBapFile, std::ios::binary); - - if (!outputFile) { - CORE_LOG_ERROR("Failed to open output file"); - return false; - } - - std::memcpy(header.magic, static_cast("BAP"), 3); - header.version = PACKER_VERSION; - header.fileCount = 0; - - std::vector>> filesData; - size_t headerSize = 3 + sizeof(header.version) + sizeof(header.fileCount); - - for (const auto& entry : std::filesystem::directory_iterator(directoryPath)) { - if (entry.is_regular_file()) { - FileEntry fileEntry; - fileEntry.filePath = entry.path().string(); - - // TODO: Implement filetype detection - fileEntry.fileType = RAWBINARY; - fileEntry.compressedSize = COMPRESSION_NONE; - - std::ifstream inputFile(entry.path(), std::ios::binary | std::ios::ate); - if (!inputFile) { - CORE_LOG_ERROR("FilePacker::Pack(): Failed to open file for packing: {}", entry.path().string()); - return false; - } - fileEntry.dataSize = inputFile.tellg(); - inputFile.seekg(0, std::ios::beg); - std::vector fileData(fileEntry.dataSize); - inputFile.read(fileData.data(), fileEntry.dataSize); - inputFile.close(); - - // TODO: Implement data compression - std::vector compressedData = CompressData(fileData, fileEntry.compression); - fileEntry.compressedSize = compressedData.size(); - - filesData.emplace_back(fileEntry, std::move(compressedData)); - size_t pathLength = fileEntry.filePath.size(); - size_t metadataLength = fileEntry.metadata.size(); - - headerSize += sizeof(pathLength) + pathLength + sizeof(fileEntry.fileType) + sizeof(fileEntry.compression) - + sizeof(fileEntry.dataSize) + sizeof(fileEntry.compressedSize) + sizeof(fileEntry.dataOffset) - + sizeof(metadataLength) + metadataLength; - - header.fileEntries.push_back(fileEntry); - header.fileCount++; - } - } - outputFile.seekp(headerSize, std::ios::beg); - for (size_t i = 0; i < filesData.size(); ++i) { - auto& fileEntry = header.fileEntries[i]; - const auto& compressedData = filesData[i].second; - fileEntry.dataOffset = outputFile.tellp(); - outputFile.write(compressedData.data(), compressedData.size()); - } - - outputFile.seekp(0, std::ios::beg); - WriteHeader(outputFile, header); - outputFile.close(); - return true; -} - -std::vector FilePacker::listFiles(const std::string& bapFile) { - std::ifstream inputFile(bapFile, std::ios::binary); - if (!inputFile) { - CORE_LOG_FATAL("Failed to open .bap file for listing: {}", bapFile); - throw std::runtime_error("File could not be opened"); - } - - BapHeader header = ReadHeader(inputFile); - inputFile.close(); - return header.fileEntries; -} - -bool FilePacker::ExtractFile(const std::string& bapFile, const std::string& fileName, const std::string& outputPath) { - std::ifstream inputFile(bapFile, std::ios::binary); - if (!inputFile) { - CORE_LOG_ERROR("Failed to open .bap file for extraction: {}", bapFile); - return false; - } - - BapHeader header = ReadHeader(inputFile); - for (const auto& fileEntry : header.fileEntries) { - if (fileEntry.filePath == fileName) { - std::ofstream outFile(outputPath, std::ios::binary); - if (!outFile) { - CORE_LOG_ERROR("Failed to create output file: {}", outputPath); - return false; - } - - std::vector compressedData(fileEntry.compressedSize); - inputFile.seekg(fileEntry.dataOffset, std::ios::beg); - inputFile.read(compressedData.data(), compressedData.size()); - std::vector decompressedData = DecompressData(compressedData, fileEntry.compression); - outFile.write(decompressedData.data(), decompressedData.size()); - outFile.close(); - return true; - } - } - - CORE_LOG_ERROR("File not found in .bap archive: {}", fileName); - return false; -} - -void FilePacker::WriteHeader(std::ofstream& outFile, const BapHeader& header) { - outFile.write(header.magic, 3); - outFile.write(reinterpret_cast(&header.version), sizeof(header.version)); - outFile.write(reinterpret_cast(&header.fileCount), sizeof(header.fileCount)); - - for (const auto& fileEntry : header.fileEntries) { - size_t pathLength = fileEntry.filePath.size(); - outFile.write(reinterpret_cast(&pathLength), sizeof(pathLength)); - outFile.write(fileEntry.filePath.c_str(), pathLength); - outFile.write(reinterpret_cast(&fileEntry.fileType), sizeof(fileEntry.fileType)); - outFile.write(reinterpret_cast(&fileEntry.compression), sizeof(fileEntry.compression)); - outFile.write(reinterpret_cast(&fileEntry.dataSize), sizeof(fileEntry.dataSize)); - outFile.write(reinterpret_cast(&fileEntry.compressedSize), sizeof(fileEntry.compressedSize)); - outFile.write(reinterpret_cast(&fileEntry.dataOffset), sizeof(fileEntry.dataOffset)); - - size_t metadataLength = fileEntry.metadata.size(); - outFile.write(reinterpret_cast(&metadataLength), sizeof(metadataLength)); - outFile.write(fileEntry.metadata.c_str(), metadataLength); - } -} - -BapHeader FilePacker::ReadHeader(std::ifstream& inFile) { - BapHeader header; - - inFile.read(header.magic, 3); - inFile.read(reinterpret_cast(&header.version), sizeof(header.version)); - inFile.read(reinterpret_cast(&header.fileCount), sizeof(header.fileCount)); - - if (header.version != PACKER_VERSION) { - CORE_LOG_FATAL("FilePacker::ReadHeader(): Wrong .bap file version."); - throw std::runtime_error("Invalid bap file version"); - } - - for (int i = 0; i < header.fileCount; ++i) { - FileEntry fileEntry; - - size_t pathLength; - inFile.read(reinterpret_cast(&pathLength), sizeof(pathLength)); - - fileEntry.filePath.resize(pathLength); - inFile.read(fileEntry.filePath.data(), pathLength); - - inFile.read(reinterpret_cast(&fileEntry.fileType), sizeof(fileEntry.fileType)); - inFile.read(reinterpret_cast(&fileEntry.compression), sizeof(fileEntry.compression)); - inFile.read(reinterpret_cast(&fileEntry.dataSize), sizeof(fileEntry.dataSize)); - inFile.read(reinterpret_cast(&fileEntry.compressedSize), sizeof(fileEntry.compressedSize)); - inFile.read(reinterpret_cast(&fileEntry.dataOffset), sizeof(fileEntry.dataOffset)); - - size_t metadataLength; - inFile.read(reinterpret_cast(&metadataLength), sizeof(metadataLength)); - - fileEntry.metadata.resize(metadataLength); - inFile.read(fileEntry.metadata.data(), metadataLength); - - header.fileEntries.push_back(fileEntry); - } - - return header; -} - -std::vector FilePacker::CompressData(const std::vector& input, CompressionType compression) { - // IMPL: Implement actual compression on a per file basis - if (compression == COMPRESSION_NONE) { - return input; - } - - return input; -} - -std::vector FilePacker::DecompressData(const std::vector& input, CompressionType compression) { - // IMPL: Implement decompression on a per file basis - if (compression == COMPRESSION_NONE) { - return input; - } - - return input; -} \ No newline at end of file diff --git a/src/filepacker.h b/src/filepacker.h deleted file mode 100644 index 1f12379..0000000 --- a/src/filepacker.h +++ /dev/null @@ -1,55 +0,0 @@ -// -// Created by illyum on 9/13/2024. -// - -#ifndef FILEPACKER_H -#define FILEPACKER_H - -#include - -#define BAP_MAGIC "BAP" -#define PACKER_VERSION 1 - -enum CompressionType { - COMPRESSION_NONE, - COMPRESSION_LZMA -}; - -enum FileType { - PNG, - RAWTEXT, - RAWBINARY -}; - -struct FileEntry { - std::string filePath; - FileType fileType; - CompressionType compression; - size_t dataSize; - size_t compressedSize; - std::string metadata; - size_t dataOffset; -}; - -struct BapHeader { - char magic[3]; - int version; - int fileCount; - std::vector fileEntries; -}; - -class FilePacker { -public: - bool Pack(const std::string& directoryPath, const std::string& outputBapFile); - bool Unpack(const std::string& bapFile, const std::string& outputDirectory); - std::vector listFiles(const std::string& bapFile); - bool ExtractFile(const std::string& bapFile, const std::string& fileName, const std::string& outputPath); - -private: - void WriteHeader(std::ofstream& outFile, const BapHeader& header); - BapHeader ReadHeader(std::ifstream& inFile); - std::vector CompressData(const std::vector& input, CompressionType compression); - std::vector DecompressData(const std::vector& input, CompressionType compression); -}; - -#endif //FILEPACKER_H diff --git a/src/network.h b/src/network.h deleted file mode 100644 index 0d55cd5..0000000 --- a/src/network.h +++ /dev/null @@ -1,14 +0,0 @@ -#pragma once - -#define SERVER_PORT 6771 -#define SERVER_ADDRESS "127.0.0.1" - -class Network { -public: - virtual void Initialize() = 0; - virtual void Shutdown() = 0; - virtual void SendData(const void* data, size_t size) = 0; - virtual void ReceiveData() = 0; - - virtual ~Network() = default; -}; diff --git a/src/platform/posix/FatalHandlerPosix.cpp b/src/platform/posix/FatalHandlerPosix.cpp deleted file mode 100644 index c50c262..0000000 --- a/src/platform/posix/FatalHandlerPosix.cpp +++ /dev/null @@ -1,38 +0,0 @@ -// -// Created by illyum on 9/13/2024. -// - -#include "FatalHandler.h" -#include -#include -#include -#include -#include -#include - -namespace IsoEngine { - - template - void FatalHandler(const std::string& format, Args... args) { - std::ostringstream stream; - stream << std::format(format, args...); - - // TODO: change the name of the file to reflect the time the crash happened - std::ofstream crashFile("crash.log", std::ios::app); - crashFile << "FATAL ERROR: " << stream.str() << std::endl; - - void* callstack[128]; - int frames = backtrace(callstack, 128); - char** symbols = backtrace_symbols(callstack, frames); - - crashFile << "Stack trace:\n"; - for (int i = 0; i < frames; ++i) { - crashFile << symbols[i] << std::endl; - } - - free(symbols); - crashFile.close(); - - std::abort(); - } -} diff --git a/src/platform/windows/FatalHandlerWindows.cpp b/src/platform/windows/FatalHandlerWindows.cpp deleted file mode 100644 index 1c4fa28..0000000 --- a/src/platform/windows/FatalHandlerWindows.cpp +++ /dev/null @@ -1,64 +0,0 @@ -// -// Created by illyum on 9/13/2024. -// - -#include "FatalHandler.h" -#include -#include -#include -#include -#include - -#pragma comment(lib, "dbghelp.lib") - -namespace IsoEngine { - template - void FatalHandler(const std::string &format, Args... args) { - std::ostringstream stream; - stream << std::format(format, args...); - - // TODO: change the name of the file to reflect the time the crash happened - std::ofstream crashFile("crash.log", std::ios::app); - crashFile << "FATAL ERROR: " << stream.str() << std::endl; - - HANDLE process = GetCurrentProcess(); - SymInitialize(process, NULL, TRUE); - - CONTEXT context; - RtlCaptureContext(&context); - - STACKFRAME64 stackFrame = {}; - stackFrame.AddrPC.Offset = context.Rip; - stackFrame.AddrPC.Mode = AddrModeFlat; - stackFrame.AddrFrame.Offset = context.Rbp; - stackFrame.AddrFrame.Mode = AddrModeFlat; - stackFrame.AddrStack.Offset = context.Rsp; - stackFrame.AddrStack.Mode = AddrModeFlat; - - crashFile << "Stack trace:\n"; - while (StackWalk64(IMAGE_FILE_MACHINE_AMD64, process, GetCurrentThread(), &stackFrame, &context, NULL, - SymFunctionTableAccess64, SymGetModuleBase64, NULL)) { - DWORD64 address = stackFrame.AddrPC.Offset; - if (address == 0) { - break; - } - - char buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(TCHAR)]; - PSYMBOL_INFO symbol = (PSYMBOL_INFO) buffer; - symbol->SizeOfStruct = sizeof(SYMBOL_INFO); - symbol->MaxNameLen = MAX_SYM_NAME; - - DWORD64 displacement = 0; - if (SymFromAddr(process, address, &displacement, symbol)) { - crashFile << symbol->Name << " - 0x" << std::hex << symbol->Address << std::dec << "\n"; - } else { - crashFile << "Unresolved symbol at address: 0x" << std::hex << address << std::dec << "\n"; - } - } - - SymCleanup(process); - crashFile.close(); - - std::abort(); - } -} diff --git a/src/scene_manager.cpp b/src/scene_manager.cpp deleted file mode 100644 index 3eae780..0000000 --- a/src/scene_manager.cpp +++ /dev/null @@ -1,110 +0,0 @@ -#include "scene_manager.h" - -#include "Logger.h" -#include "raylib.h" - -SceneManager::SceneManager(entt::registry& registry) : registry(registry), activeScene(entt::null) {} - -void SceneManager::SetActiveScene(entt::entity scene) { - if (activeScene != entt::null) { - auto& currentScene = registry.get(activeScene); - currentScene.isActive = false; - } - - activeScene = scene; - auto& newScene = registry.get(activeScene); - newScene.isActive = true; -} - -entt::entity SceneManager::CreateScene() { - entt::entity scene = registry.create(); - registry.emplace(scene, false); - return scene; -} - -void SceneManager::UpdateActiveScene(float delta) { - if (activeScene != entt::null) { - // Iterate over entities in the active scene that have an InputComponent - auto view = registry.view(); - for (auto entity : view) { - auto& inputComponent = view.get(entity); - inputComponent.Update(); // This will call the input logic - } - } -} - -void SceneManager::RenderActiveScene() { - if (activeScene != entt::null) { - // Create a multimap to store entities sorted by layer - std::multimap layeredEntities; - - // Gather all entities with a LayerComponent - auto view = registry.view(); - for (auto entity : view) { - auto& layer = view.get(entity); - layeredEntities.insert({ layer.layer, entity }); - } - - // Render all entities sorted by layer - for (auto& pair : layeredEntities) { - auto entity = pair.second; - auto& sprite = registry.get(entity); - auto& transform = registry.get(entity); - - // Render the sprite at the position defined by the TransformComponent - sprite.Render(transform); - } - } -} - -void SceneManager::UpdateUI(entt::registry& registry) { - Vector2 mousePosition = GetMousePosition(); // This assumes a raylib-like GetMousePosition, adapt as needed for your system - - auto view = registry.view(); - for (auto entity : view) { - auto& ui = view.get(entity); - auto& transform = view.get(entity); - - // Check if the mouse is over the button - bool isHovered = (mousePosition.x > transform.x && mousePosition.x < transform.x + ui.width && - mousePosition.y > transform.y && mousePosition.y < transform.y + ui.height); - - if (isHovered) { - ui.state = IsMouseButtonPressed(MOUSE_LEFT_BUTTON) ? UIState::CLICKED : UIState::HOVERED; - - // If clicked, call the onClick function - if (ui.state == UIState::CLICKED && ui.onClick) { - ui.onClick(); - } - } else { - ui.state = UIState::NORMAL; - } - } -} - -void SceneManager::RenderUI(entt::registry& registry) { - auto view = registry.view(); - - for (auto entity : view) { - auto& ui = view.get(entity); - auto& transform = view.get(entity); - - // Render the button background - Color buttonColor = DARKGRAY; - if (ui.state == UIState::HOVERED) { - buttonColor = LIGHTGRAY; - } else if (ui.state == UIState::CLICKED) { - buttonColor = GRAY; - } - - // Use the raw transform position (no adjustment to center screen) - DrawRectangle(transform.x, transform.y, ui.width, ui.height, buttonColor); - - // Render the button text (centered within the button) - int textWidth = MeasureText(ui.text.c_str(), 20); - int textX = transform.x + (ui.width / 2) - (textWidth / 2); - int textY = transform.y + (ui.height / 2) - 10; // Slight vertical adjustment - - DrawText(ui.text.c_str(), textX, textY, 20, BLACK); - } -} \ No newline at end of file diff --git a/src/scene_manager.h b/src/scene_manager.h deleted file mode 100644 index cf79872..0000000 --- a/src/scene_manager.h +++ /dev/null @@ -1,20 +0,0 @@ -#pragma once - -#include -#include - -class SceneManager { -public: - SceneManager(entt::registry& registry); - - void SetActiveScene(entt::entity scene); - entt::entity CreateScene(); - void UpdateActiveScene(float delta); - void RenderActiveScene(); - void UpdateUI(entt::registry& registry); - void RenderUI(entt::registry& registry); - -private: - entt::registry& registry; - entt::entity activeScene; -}; diff --git a/vendor/enet/enet.h b/vendor/enet/enet.h deleted file mode 100644 index 7a9afc7..0000000 --- a/vendor/enet/enet.h +++ /dev/null @@ -1,6102 +0,0 @@ -/** - * include/enet.h - a Single-Header auto-generated variant of enet.h library. - * - * Usage: - * #define ENET_IMPLEMENTATION exactly in ONE source file right BEFORE including the library, like: - * - * #define ENET_IMPLEMENTATION - * #include - * - * License: - * The MIT License (MIT) - * - * Copyright (c) 2002-2016 Lee Salzman - * Copyright (c) 2017-2021 Vladyslav Hrytsenko, Dominik Madarász - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ -#ifndef ENET_INCLUDE_H -#define ENET_INCLUDE_H - -#include -#include -#include -#include -#include - -#define ENET_VERSION_MAJOR 2 -#define ENET_VERSION_MINOR 3 -#define ENET_VERSION_PATCH 10 -#define ENET_VERSION_CREATE(major, minor, patch) (((major)<<16) | ((minor)<<8) | (patch)) -#define ENET_VERSION_GET_MAJOR(version) (((version)>>16)&0xFF) -#define ENET_VERSION_GET_MINOR(version) (((version)>>8)&0xFF) -#define ENET_VERSION_GET_PATCH(version) ((version)&0xFF) -#define ENET_VERSION ENET_VERSION_CREATE(ENET_VERSION_MAJOR, ENET_VERSION_MINOR, ENET_VERSION_PATCH) - -#define ENET_TIME_OVERFLOW 86400000 -#define ENET_TIME_LESS(a, b) ((a) - (b) >= ENET_TIME_OVERFLOW) -#define ENET_TIME_GREATER(a, b) ((b) - (a) >= ENET_TIME_OVERFLOW) -#define ENET_TIME_LESS_EQUAL(a, b) (! ENET_TIME_GREATER (a, b)) -#define ENET_TIME_GREATER_EQUAL(a, b) (! ENET_TIME_LESS (a, b)) -#define ENET_TIME_DIFFERENCE(a, b) ((a) - (b) >= ENET_TIME_OVERFLOW ? (b) - (a) : (a) - (b)) - -// =======================================================================// -// ! -// ! System differences -// ! -// =======================================================================// - -#if defined(_WIN32) - #if defined(_MSC_VER) && defined(ENET_IMPLEMENTATION) - #pragma warning (disable: 4267) // size_t to int conversion - #pragma warning (disable: 4244) // 64bit to 32bit int - #pragma warning (disable: 4018) // signed/unsigned mismatch - #pragma warning (disable: 4146) // unary minus operator applied to unsigned type - #endif - - #ifndef ENET_NO_PRAGMA_LINK - #ifndef __GNUC__ - #pragma comment(lib, "ws2_32.lib") - #pragma comment(lib, "winmm.lib") - #endif - #endif - - #if _MSC_VER >= 1910 - /* It looks like there were changes as of Visual Studio 2017 and there are no 32/64 bit - versions of _InterlockedExchange[operation], only InterlockedExchange[operation] - (without leading underscore), so we have to distinguish between compiler versions */ - #define NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - #endif - - #ifdef __GNUC__ - #if (_WIN32_WINNT < 0x0600) - #undef _WIN32_WINNT - #define _WIN32_WINNT 0x0600 - #endif - #endif - - #include - #include - #include - - #include - - #if defined(_WIN32) && defined(_MSC_VER) - #if _MSC_VER < 1900 - typedef struct timespec { - long tv_sec; - long tv_nsec; - }; - #endif - #define CLOCK_MONOTONIC 0 - #endif - - typedef SOCKET ENetSocket; - #define ENET_SOCKET_NULL INVALID_SOCKET - - #define ENET_HOST_TO_NET_16(value) (htons(value)) - #define ENET_HOST_TO_NET_32(value) (htonl(value)) - - #define ENET_NET_TO_HOST_16(value) (ntohs(value)) - #define ENET_NET_TO_HOST_32(value) (ntohl(value)) - - typedef struct { - size_t dataLength; - void * data; - } ENetBuffer; - - #define ENET_CALLBACK __cdecl - - #ifdef ENET_DLL - #ifdef ENET_IMPLEMENTATION - #define ENET_API __declspec( dllexport ) - #else - #define ENET_API __declspec( dllimport ) - #endif // ENET_IMPLEMENTATION - #else - #define ENET_API extern - #endif // ENET_DLL - - typedef fd_set ENetSocketSet; - - #define ENET_SOCKETSET_EMPTY(sockset) FD_ZERO(&(sockset)) - #define ENET_SOCKETSET_ADD(sockset, socket) FD_SET(socket, &(sockset)) - #define ENET_SOCKETSET_REMOVE(sockset, socket) FD_CLR(socket, &(sockset)) - #define ENET_SOCKETSET_CHECK(sockset, socket) FD_ISSET(socket, &(sockset)) -#else - #include - #include - #include - #include - #include - #include - #include - #include - #include - #include - #include - #include - #include - - #ifdef __APPLE__ - #include - #include - #include - #endif - - #ifndef MSG_NOSIGNAL - #define MSG_NOSIGNAL 0 - #endif - - #ifdef MSG_MAXIOVLEN - #define ENET_BUFFER_MAXIMUM MSG_MAXIOVLEN - #endif - - typedef int ENetSocket; - - #define ENET_SOCKET_NULL -1 - - #define ENET_HOST_TO_NET_16(value) (htons(value)) /**< macro that converts host to net byte-order of a 16-bit value */ - #define ENET_HOST_TO_NET_32(value) (htonl(value)) /**< macro that converts host to net byte-order of a 32-bit value */ - - #define ENET_NET_TO_HOST_16(value) (ntohs(value)) /**< macro that converts net to host byte-order of a 16-bit value */ - #define ENET_NET_TO_HOST_32(value) (ntohl(value)) /**< macro that converts net to host byte-order of a 32-bit value */ - - typedef struct { - void * data; - size_t dataLength; - } ENetBuffer; - - #define ENET_CALLBACK - #define ENET_API extern - - typedef fd_set ENetSocketSet; - - #define ENET_SOCKETSET_EMPTY(sockset) FD_ZERO(&(sockset)) - #define ENET_SOCKETSET_ADD(sockset, socket) FD_SET(socket, &(sockset)) - #define ENET_SOCKETSET_REMOVE(sockset, socket) FD_CLR(socket, &(sockset)) - #define ENET_SOCKETSET_CHECK(sockset, socket) FD_ISSET(socket, &(sockset)) -#endif - -#ifdef __GNUC__ -#define ENET_DEPRECATED(func) func __attribute__ ((deprecated)) -#elif defined(_MSC_VER) -#define ENET_DEPRECATED(func) __declspec(deprecated) func -#else -#pragma message("WARNING: Please ENET_DEPRECATED for this compiler") -#define ENET_DEPRECATED(func) func -#endif - -#ifndef ENET_BUFFER_MAXIMUM -#define ENET_BUFFER_MAXIMUM (1 + 2 * ENET_PROTOCOL_MAXIMUM_PACKET_COMMANDS) -#endif - -#define ENET_UNUSED(x) (void)x; - -#define ENET_MAX(x, y) ((x) > (y) ? (x) : (y)) -#define ENET_MIN(x, y) ((x) < (y) ? (x) : (y)) - -#define ENET_IPV6 1 -static const struct in6_addr enet_v4_anyaddr = {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}; -static const struct in6_addr enet_v4_noaddr = {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}; -static const struct in6_addr enet_v4_localhost = {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x01 }}}; -static const struct in6_addr enet_v6_anyaddr = {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}; -static const struct in6_addr enet_v6_noaddr = {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}; -static const struct in6_addr enet_v6_localhost = {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}; -#define ENET_HOST_ANY in6addr_any -#define ENET_HOST_BROADCAST 0xFFFFFFFFU -#define ENET_PORT_ANY 0 - -#ifdef __cplusplus -extern "C" { -#endif - -// =======================================================================// -// ! -// ! Basic stuff -// ! -// =======================================================================// - - typedef uint8_t enet_uint8; /**< unsigned 8-bit type */ - typedef uint16_t enet_uint16; /**< unsigned 16-bit type */ - typedef uint32_t enet_uint32; /**< unsigned 32-bit type */ - typedef uint64_t enet_uint64; /**< unsigned 64-bit type */ - - typedef enet_uint32 ENetVersion; - typedef struct _ENetPacket ENetPacket; - - typedef struct _ENetCallbacks { - void *(ENET_CALLBACK *malloc) (size_t size); - void (ENET_CALLBACK *free) (void *memory); - void (ENET_CALLBACK *no_memory) (void); - - ENetPacket *(ENET_CALLBACK *packet_create) (const void *data, size_t dataLength, enet_uint32 flags); - void (ENET_CALLBACK *packet_destroy) (ENetPacket *packet); - } ENetCallbacks; - - extern void *enet_malloc(size_t); - extern void enet_free(void *); - extern ENetPacket* enet_packet_create(const void*,size_t,enet_uint32); - extern ENetPacket* enet_packet_resize(ENetPacket*, size_t); - extern ENetPacket* enet_packet_copy(ENetPacket*); - extern void enet_packet_destroy(ENetPacket*); - -// =======================================================================// -// ! -// ! List -// ! -// =======================================================================// - - typedef struct _ENetListNode { - struct _ENetListNode *next; - struct _ENetListNode *previous; - } ENetListNode; - - typedef ENetListNode *ENetListIterator; - - typedef struct _ENetList { - ENetListNode sentinel; - } ENetList; - - extern ENetListIterator enet_list_insert(ENetListIterator, void *); - extern ENetListIterator enet_list_move(ENetListIterator, void *, void *); - - extern void *enet_list_remove(ENetListIterator); - extern void enet_list_clear(ENetList *); - extern size_t enet_list_size(ENetList *); - - #define enet_list_begin(list) ((list)->sentinel.next) - #define enet_list_end(list) (&(list)->sentinel) - #define enet_list_empty(list) (enet_list_begin(list) == enet_list_end(list)) - #define enet_list_next(iterator) ((iterator)->next) - #define enet_list_previous(iterator) ((iterator)->previous) - #define enet_list_front(list) ((void *)(list)->sentinel.next) - #define enet_list_back(list) ((void *)(list)->sentinel.previous) - - -// =======================================================================// -// ! -// ! Protocol -// ! -// =======================================================================// - - enum { - ENET_PROTOCOL_MINIMUM_MTU = 576, - ENET_PROTOCOL_MAXIMUM_MTU = 4096, - ENET_PROTOCOL_MAXIMUM_PACKET_COMMANDS = 32, - ENET_PROTOCOL_MINIMUM_WINDOW_SIZE = 4096, - ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE = 65536, - ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT = 1, - ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT = 255, - ENET_PROTOCOL_MAXIMUM_PEER_ID = 0xFFF, - ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT = 1024 * 1024 - }; - - typedef enum _ENetProtocolCommand { - ENET_PROTOCOL_COMMAND_NONE = 0, - ENET_PROTOCOL_COMMAND_ACKNOWLEDGE = 1, - ENET_PROTOCOL_COMMAND_CONNECT = 2, - ENET_PROTOCOL_COMMAND_VERIFY_CONNECT = 3, - ENET_PROTOCOL_COMMAND_DISCONNECT = 4, - ENET_PROTOCOL_COMMAND_PING = 5, - ENET_PROTOCOL_COMMAND_SEND_RELIABLE = 6, - ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE = 7, - ENET_PROTOCOL_COMMAND_SEND_FRAGMENT = 8, - ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED = 9, - ENET_PROTOCOL_COMMAND_BANDWIDTH_LIMIT = 10, - ENET_PROTOCOL_COMMAND_THROTTLE_CONFIGURE = 11, - ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT = 12, - ENET_PROTOCOL_COMMAND_COUNT = 13, - - ENET_PROTOCOL_COMMAND_MASK = 0x0F - } ENetProtocolCommand; - - typedef enum _ENetProtocolFlag { - ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE = (1 << 7), - ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED = (1 << 6), - - ENET_PROTOCOL_HEADER_FLAG_COMPRESSED = (1 << 14), - ENET_PROTOCOL_HEADER_FLAG_SENT_TIME = (1 << 15), - ENET_PROTOCOL_HEADER_FLAG_MASK = ENET_PROTOCOL_HEADER_FLAG_COMPRESSED | ENET_PROTOCOL_HEADER_FLAG_SENT_TIME, - - ENET_PROTOCOL_HEADER_SESSION_MASK = (3 << 12), - ENET_PROTOCOL_HEADER_SESSION_SHIFT = 12 - } ENetProtocolFlag; - - #ifdef _MSC_VER - #pragma pack(push, 1) - #define ENET_PACKED - #elif defined(__GNUC__) || defined(__clang__) - #define ENET_PACKED __attribute__ ((packed)) - #else - #define ENET_PACKED - #endif - - typedef struct _ENetProtocolHeader { - enet_uint16 peerID; - enet_uint16 sentTime; - } ENET_PACKED ENetProtocolHeader; - - typedef struct _ENetProtocolCommandHeader { - enet_uint8 command; - enet_uint8 channelID; - enet_uint16 reliableSequenceNumber; - } ENET_PACKED ENetProtocolCommandHeader; - - typedef struct _ENetProtocolAcknowledge { - ENetProtocolCommandHeader header; - enet_uint16 receivedReliableSequenceNumber; - enet_uint16 receivedSentTime; - } ENET_PACKED ENetProtocolAcknowledge; - - typedef struct _ENetProtocolConnect { - ENetProtocolCommandHeader header; - enet_uint16 outgoingPeerID; - enet_uint8 incomingSessionID; - enet_uint8 outgoingSessionID; - enet_uint32 mtu; - enet_uint32 windowSize; - enet_uint32 channelCount; - enet_uint32 incomingBandwidth; - enet_uint32 outgoingBandwidth; - enet_uint32 packetThrottleInterval; - enet_uint32 packetThrottleAcceleration; - enet_uint32 packetThrottleDeceleration; - enet_uint32 connectID; - enet_uint32 data; - } ENET_PACKED ENetProtocolConnect; - - typedef struct _ENetProtocolVerifyConnect { - ENetProtocolCommandHeader header; - enet_uint16 outgoingPeerID; - enet_uint8 incomingSessionID; - enet_uint8 outgoingSessionID; - enet_uint32 mtu; - enet_uint32 windowSize; - enet_uint32 channelCount; - enet_uint32 incomingBandwidth; - enet_uint32 outgoingBandwidth; - enet_uint32 packetThrottleInterval; - enet_uint32 packetThrottleAcceleration; - enet_uint32 packetThrottleDeceleration; - enet_uint32 connectID; - } ENET_PACKED ENetProtocolVerifyConnect; - - typedef struct _ENetProtocolBandwidthLimit { - ENetProtocolCommandHeader header; - enet_uint32 incomingBandwidth; - enet_uint32 outgoingBandwidth; - } ENET_PACKED ENetProtocolBandwidthLimit; - - typedef struct _ENetProtocolThrottleConfigure { - ENetProtocolCommandHeader header; - enet_uint32 packetThrottleInterval; - enet_uint32 packetThrottleAcceleration; - enet_uint32 packetThrottleDeceleration; - } ENET_PACKED ENetProtocolThrottleConfigure; - - typedef struct _ENetProtocolDisconnect { - ENetProtocolCommandHeader header; - enet_uint32 data; - } ENET_PACKED ENetProtocolDisconnect; - - typedef struct _ENetProtocolPing { - ENetProtocolCommandHeader header; - } ENET_PACKED ENetProtocolPing; - - typedef struct _ENetProtocolSendReliable { - ENetProtocolCommandHeader header; - enet_uint16 dataLength; - } ENET_PACKED ENetProtocolSendReliable; - - typedef struct _ENetProtocolSendUnreliable { - ENetProtocolCommandHeader header; - enet_uint16 unreliableSequenceNumber; - enet_uint16 dataLength; - } ENET_PACKED ENetProtocolSendUnreliable; - - typedef struct _ENetProtocolSendUnsequenced { - ENetProtocolCommandHeader header; - enet_uint16 unsequencedGroup; - enet_uint16 dataLength; - } ENET_PACKED ENetProtocolSendUnsequenced; - - typedef struct _ENetProtocolSendFragment { - ENetProtocolCommandHeader header; - enet_uint16 startSequenceNumber; - enet_uint16 dataLength; - enet_uint32 fragmentCount; - enet_uint32 fragmentNumber; - enet_uint32 totalLength; - enet_uint32 fragmentOffset; - } ENET_PACKED ENetProtocolSendFragment; - - typedef union _ENetProtocol { - ENetProtocolCommandHeader header; - ENetProtocolAcknowledge acknowledge; - ENetProtocolConnect connect; - ENetProtocolVerifyConnect verifyConnect; - ENetProtocolDisconnect disconnect; - ENetProtocolPing ping; - ENetProtocolSendReliable sendReliable; - ENetProtocolSendUnreliable sendUnreliable; - ENetProtocolSendUnsequenced sendUnsequenced; - ENetProtocolSendFragment sendFragment; - ENetProtocolBandwidthLimit bandwidthLimit; - ENetProtocolThrottleConfigure throttleConfigure; - } ENET_PACKED ENetProtocol; - - #ifdef _MSC_VER - #pragma pack(pop) - #endif - -// =======================================================================// -// ! -// ! General ENet structs/enums -// ! -// =======================================================================// - - typedef enum _ENetSocketType { - ENET_SOCKET_TYPE_STREAM = 1, - ENET_SOCKET_TYPE_DATAGRAM = 2 - } ENetSocketType; - - typedef enum _ENetSocketWait { - ENET_SOCKET_WAIT_NONE = 0, - ENET_SOCKET_WAIT_SEND = (1 << 0), - ENET_SOCKET_WAIT_RECEIVE = (1 << 1), - ENET_SOCKET_WAIT_INTERRUPT = (1 << 2) - } ENetSocketWait; - - typedef enum _ENetSocketOption { - ENET_SOCKOPT_NONBLOCK = 1, - ENET_SOCKOPT_BROADCAST = 2, - ENET_SOCKOPT_RCVBUF = 3, - ENET_SOCKOPT_SNDBUF = 4, - ENET_SOCKOPT_REUSEADDR = 5, - ENET_SOCKOPT_RCVTIMEO = 6, - ENET_SOCKOPT_SNDTIMEO = 7, - ENET_SOCKOPT_ERROR = 8, - ENET_SOCKOPT_NODELAY = 9, - ENET_SOCKOPT_IPV6_V6ONLY = 10, - } ENetSocketOption; - - typedef enum _ENetSocketShutdown { - ENET_SOCKET_SHUTDOWN_READ = 0, - ENET_SOCKET_SHUTDOWN_WRITE = 1, - ENET_SOCKET_SHUTDOWN_READ_WRITE = 2 - } ENetSocketShutdown; - - /** - * Portable internet address structure. - * - * The host must be specified in network byte-order, and the port must be in host - * byte-order. The constant ENET_HOST_ANY may be used to specify the default - * server host. The constant ENET_HOST_BROADCAST may be used to specify the - * broadcast address (255.255.255.255). This makes sense for enet_host_connect, - * but not for enet_host_create. Once a server responds to a broadcast, the - * address is updated from ENET_HOST_BROADCAST to the server's actual IP address. - */ - typedef struct _ENetAddress { - struct in6_addr host; - enet_uint16 port; - enet_uint16 sin6_scope_id; - } ENetAddress; - - #define in6_equal(in6_addr_a, in6_addr_b) (memcmp(&in6_addr_a, &in6_addr_b, sizeof(struct in6_addr)) == 0) - - /** - * Packet flag bit constants. - * - * The host must be specified in network byte-order, and the port must be in - * host byte-order. The constant ENET_HOST_ANY may be used to specify the - * default server host. - * - * @sa ENetPacket - */ - typedef enum _ENetPacketFlag { - ENET_PACKET_FLAG_RELIABLE = (1 << 0), /** packet must be received by the target peer and resend attempts should be made until the packet is delivered */ - ENET_PACKET_FLAG_UNSEQUENCED = (1 << 1), /** packet will not be sequenced with other packets not supported for reliable packets */ - ENET_PACKET_FLAG_NO_ALLOCATE = (1 << 2), /** packet will not allocate data, and user must supply it instead */ - ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT = (1 << 3), /** packet will be fragmented using unreliable (instead of reliable) sends if it exceeds the MTU */ - ENET_PACKET_FLAG_SENT = (1 << 8), /** whether the packet has been sent from all queues it has been entered into */ - } ENetPacketFlag; - - typedef void (ENET_CALLBACK *ENetPacketFreeCallback)(void *); - - /** - * ENet packet structure. - * - * An ENet data packet that may be sent to or received from a peer. The shown - * fields should only be read and never modified. The data field contains the - * allocated data for the packet. The dataLength fields specifies the length - * of the allocated data. The flags field is either 0 (specifying no flags), - * or a bitwise-or of any combination of the following flags: - * - * ENET_PACKET_FLAG_RELIABLE - packet must be received by the target peer and resend attempts should be made until the packet is delivered - * ENET_PACKET_FLAG_UNSEQUENCED - packet will not be sequenced with other packets (not supported for reliable packets) - * ENET_PACKET_FLAG_NO_ALLOCATE - packet will not allocate data, and user must supply it instead - * ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT - packet will be fragmented using unreliable (instead of reliable) sends if it exceeds the MTU - * ENET_PACKET_FLAG_SENT - whether the packet has been sent from all queues it has been entered into - * @sa ENetPacketFlag - */ - typedef struct _ENetPacket { - size_t referenceCount; /**< internal use only */ - enet_uint32 flags; /**< bitwise-or of ENetPacketFlag constants */ - enet_uint8 * data; /**< allocated data for packet */ - size_t dataLength; /**< length of data */ - ENetPacketFreeCallback freeCallback; /**< function to be called when the packet is no longer in use */ - void * userData; /**< application private data, may be freely modified */ - } ENetPacket; - - typedef struct _ENetAcknowledgement { - ENetListNode acknowledgementList; - enet_uint32 sentTime; - ENetProtocol command; - } ENetAcknowledgement; - - typedef struct _ENetOutgoingCommand { - ENetListNode outgoingCommandList; - enet_uint16 reliableSequenceNumber; - enet_uint16 unreliableSequenceNumber; - enet_uint32 sentTime; - enet_uint32 roundTripTimeout; - enet_uint32 roundTripTimeoutLimit; - enet_uint32 fragmentOffset; - enet_uint16 fragmentLength; - enet_uint16 sendAttempts; - ENetProtocol command; - ENetPacket * packet; - } ENetOutgoingCommand; - - typedef struct _ENetIncomingCommand { - ENetListNode incomingCommandList; - enet_uint16 reliableSequenceNumber; - enet_uint16 unreliableSequenceNumber; - ENetProtocol command; - enet_uint32 fragmentCount; - enet_uint32 fragmentsRemaining; - enet_uint32 *fragments; - ENetPacket * packet; - } ENetIncomingCommand; - - typedef enum _ENetPeerState { - ENET_PEER_STATE_DISCONNECTED = 0, - ENET_PEER_STATE_CONNECTING = 1, - ENET_PEER_STATE_ACKNOWLEDGING_CONNECT = 2, - ENET_PEER_STATE_CONNECTION_PENDING = 3, - ENET_PEER_STATE_CONNECTION_SUCCEEDED = 4, - ENET_PEER_STATE_CONNECTED = 5, - ENET_PEER_STATE_DISCONNECT_LATER = 6, - ENET_PEER_STATE_DISCONNECTING = 7, - ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT = 8, - ENET_PEER_STATE_ZOMBIE = 9 - } ENetPeerState; - - enum { - ENET_HOST_RECEIVE_BUFFER_SIZE = 256 * 1024, - ENET_HOST_SEND_BUFFER_SIZE = 256 * 1024, - ENET_HOST_BANDWIDTH_THROTTLE_INTERVAL = 1000, - ENET_HOST_DEFAULT_MTU = 1392, - ENET_HOST_DEFAULT_MAXIMUM_PACKET_SIZE = 32 * 1024 * 1024, - ENET_HOST_DEFAULT_MAXIMUM_WAITING_DATA = 32 * 1024 * 1024, - - ENET_PEER_DEFAULT_ROUND_TRIP_TIME = 500, - ENET_PEER_DEFAULT_PACKET_THROTTLE = 32, - ENET_PEER_PACKET_THROTTLE_SCALE = 32, - ENET_PEER_PACKET_THROTTLE_COUNTER = 7, - ENET_PEER_PACKET_THROTTLE_ACCELERATION = 2, - ENET_PEER_PACKET_THROTTLE_DECELERATION = 2, - ENET_PEER_PACKET_THROTTLE_INTERVAL = 5000, - ENET_PEER_PACKET_LOSS_SCALE = (1 << 16), - ENET_PEER_PACKET_LOSS_INTERVAL = 10000, - ENET_PEER_WINDOW_SIZE_SCALE = 64 * 1024, - ENET_PEER_TIMEOUT_LIMIT = 32, - ENET_PEER_TIMEOUT_MINIMUM = 5000, - ENET_PEER_TIMEOUT_MAXIMUM = 30000, - ENET_PEER_PING_INTERVAL = 500, - ENET_PEER_UNSEQUENCED_WINDOWS = 64, - ENET_PEER_UNSEQUENCED_WINDOW_SIZE = 1024, - ENET_PEER_FREE_UNSEQUENCED_WINDOWS = 32, - ENET_PEER_RELIABLE_WINDOWS = 16, - ENET_PEER_RELIABLE_WINDOW_SIZE = 0x1000, - ENET_PEER_FREE_RELIABLE_WINDOWS = 8 - }; - - typedef struct _ENetChannel { - enet_uint16 outgoingReliableSequenceNumber; - enet_uint16 outgoingUnreliableSequenceNumber; - enet_uint16 usedReliableWindows; - enet_uint16 reliableWindows[ENET_PEER_RELIABLE_WINDOWS]; - enet_uint16 incomingReliableSequenceNumber; - enet_uint16 incomingUnreliableSequenceNumber; - ENetList incomingReliableCommands; - ENetList incomingUnreliableCommands; - } ENetChannel; - - /** - * An ENet peer which data packets may be sent or received from. - * - * No fields should be modified unless otherwise specified. - */ - typedef struct _ENetPeer { - ENetListNode dispatchList; - struct _ENetHost *host; - enet_uint16 outgoingPeerID; - enet_uint16 incomingPeerID; - enet_uint32 connectID; - enet_uint8 outgoingSessionID; - enet_uint8 incomingSessionID; - ENetAddress address; /**< Internet address of the peer */ - void * data; /**< Application private data, may be freely modified */ - ENetPeerState state; - ENetChannel * channels; - size_t channelCount; /**< Number of channels allocated for communication with peer */ - enet_uint32 incomingBandwidth; /**< Downstream bandwidth of the client in bytes/second */ - enet_uint32 outgoingBandwidth; /**< Upstream bandwidth of the client in bytes/second */ - enet_uint32 incomingBandwidthThrottleEpoch; - enet_uint32 outgoingBandwidthThrottleEpoch; - enet_uint32 incomingDataTotal; - enet_uint64 totalDataReceived; - enet_uint32 outgoingDataTotal; - enet_uint64 totalDataSent; - enet_uint32 lastSendTime; - enet_uint32 lastReceiveTime; - enet_uint32 nextTimeout; - enet_uint32 earliestTimeout; - enet_uint32 packetLossEpoch; - enet_uint32 packetsSent; - enet_uint64 totalPacketsSent; /**< total number of packets sent during a session */ - enet_uint32 packetsLost; - enet_uint32 totalPacketsLost; /**< total number of packets lost during a session */ - enet_uint32 packetLoss; /**< mean packet loss of reliable packets as a ratio with respect to the constant ENET_PEER_PACKET_LOSS_SCALE */ - enet_uint32 packetLossVariance; - enet_uint32 packetThrottle; - enet_uint32 packetThrottleLimit; - enet_uint32 packetThrottleCounter; - enet_uint32 packetThrottleEpoch; - enet_uint32 packetThrottleAcceleration; - enet_uint32 packetThrottleDeceleration; - enet_uint32 packetThrottleInterval; - enet_uint32 pingInterval; - enet_uint32 timeoutLimit; - enet_uint32 timeoutMinimum; - enet_uint32 timeoutMaximum; - enet_uint32 lastRoundTripTime; - enet_uint32 lowestRoundTripTime; - enet_uint32 lastRoundTripTimeVariance; - enet_uint32 highestRoundTripTimeVariance; - enet_uint32 roundTripTime; /**< mean round trip time (RTT), in milliseconds, between sending a reliable packet and receiving its acknowledgement */ - enet_uint32 roundTripTimeVariance; - enet_uint32 mtu; - enet_uint32 windowSize; - enet_uint32 reliableDataInTransit; - enet_uint16 outgoingReliableSequenceNumber; - ENetList acknowledgements; - ENetList sentReliableCommands; - ENetList sentUnreliableCommands; - ENetList outgoingReliableCommands; - ENetList outgoingUnreliableCommands; - ENetList dispatchedCommands; - int needsDispatch; - enet_uint16 incomingUnsequencedGroup; - enet_uint16 outgoingUnsequencedGroup; - enet_uint32 unsequencedWindow[ENET_PEER_UNSEQUENCED_WINDOW_SIZE / 32]; - enet_uint32 eventData; - size_t totalWaitingData; - } ENetPeer; - - /** An ENet packet compressor for compressing UDP packets before socket sends or receives. */ - typedef struct _ENetCompressor { - /** Context data for the compressor. Must be non-NULL. */ - void *context; - - /** Compresses from inBuffers[0:inBufferCount-1], containing inLimit bytes, to outData, outputting at most outLimit bytes. Should return 0 on failure. */ - size_t(ENET_CALLBACK * compress) (void *context, const ENetBuffer * inBuffers, size_t inBufferCount, size_t inLimit, enet_uint8 * outData, size_t outLimit); - - /** Decompresses from inData, containing inLimit bytes, to outData, outputting at most outLimit bytes. Should return 0 on failure. */ - size_t(ENET_CALLBACK * decompress) (void *context, const enet_uint8 * inData, size_t inLimit, enet_uint8 * outData, size_t outLimit); - - /** Destroys the context when compression is disabled or the host is destroyed. May be NULL. */ - void (ENET_CALLBACK * destroy)(void *context); - } ENetCompressor; - - /** Callback that computes the checksum of the data held in buffers[0:bufferCount-1] */ - typedef enet_uint32 (ENET_CALLBACK * ENetChecksumCallback)(const ENetBuffer *buffers, size_t bufferCount); - - /** Callback for intercepting received raw UDP packets. Should return 1 to intercept, 0 to ignore, or -1 to propagate an error. */ - typedef int (ENET_CALLBACK * ENetInterceptCallback)(struct _ENetHost *host, void *event); - - /** An ENet host for communicating with peers. - * - * No fields should be modified unless otherwise stated. - * - * @sa enet_host_create() - * @sa enet_host_destroy() - * @sa enet_host_connect() - * @sa enet_host_service() - * @sa enet_host_flush() - * @sa enet_host_broadcast() - * @sa enet_host_compress() - * @sa enet_host_channel_limit() - * @sa enet_host_bandwidth_limit() - * @sa enet_host_bandwidth_throttle() - */ - typedef struct _ENetHost { - ENetSocket socket; - ENetAddress address; /**< Internet address of the host */ - enet_uint32 incomingBandwidth; /**< downstream bandwidth of the host */ - enet_uint32 outgoingBandwidth; /**< upstream bandwidth of the host */ - enet_uint32 bandwidthThrottleEpoch; - enet_uint32 mtu; - enet_uint32 randomSeed; - int recalculateBandwidthLimits; - ENetPeer * peers; /**< array of peers allocated for this host */ - size_t peerCount; /**< number of peers allocated for this host */ - size_t channelLimit; /**< maximum number of channels allowed for connected peers */ - enet_uint32 serviceTime; - ENetList dispatchQueue; - int continueSending; - size_t packetSize; - enet_uint16 headerFlags; - ENetProtocol commands[ENET_PROTOCOL_MAXIMUM_PACKET_COMMANDS]; - size_t commandCount; - ENetBuffer buffers[ENET_BUFFER_MAXIMUM]; - size_t bufferCount; - ENetChecksumCallback checksum; /**< callback the user can set to enable packet checksums for this host */ - ENetCompressor compressor; - enet_uint8 packetData[2][ENET_PROTOCOL_MAXIMUM_MTU]; - ENetAddress receivedAddress; - enet_uint8 * receivedData; - size_t receivedDataLength; - enet_uint32 totalSentData; /**< total data sent, user should reset to 0 as needed to prevent overflow */ - enet_uint32 totalSentPackets; /**< total UDP packets sent, user should reset to 0 as needed to prevent overflow */ - enet_uint32 totalReceivedData; /**< total data received, user should reset to 0 as needed to prevent overflow */ - enet_uint32 totalReceivedPackets; /**< total UDP packets received, user should reset to 0 as needed to prevent overflow */ - ENetInterceptCallback intercept; /**< callback the user can set to intercept received raw UDP packets */ - size_t connectedPeers; - size_t bandwidthLimitedPeers; - size_t duplicatePeers; /**< optional number of allowed peers from duplicate IPs, defaults to ENET_PROTOCOL_MAXIMUM_PEER_ID */ - size_t maximumPacketSize; /**< the maximum allowable packet size that may be sent or received on a peer */ - size_t maximumWaitingData; /**< the maximum aggregate amount of buffer space a peer may use waiting for packets to be delivered */ - } ENetHost; - - /** - * An ENet event type, as specified in @ref ENetEvent. - */ - typedef enum _ENetEventType { - /** no event occurred within the specified time limit */ - ENET_EVENT_TYPE_NONE = 0, - - /** a connection request initiated by enet_host_connect has completed. - * The peer field contains the peer which successfully connected. - */ - ENET_EVENT_TYPE_CONNECT = 1, - - /** a peer has disconnected. This event is generated on a successful - * completion of a disconnect initiated by enet_peer_disconnect, if - * a peer has timed out. The peer field contains the peer - * which disconnected. The data field contains user supplied data - * describing the disconnection, or 0, if none is available. - */ - ENET_EVENT_TYPE_DISCONNECT = 2, - - /** a packet has been received from a peer. The peer field specifies the - * peer which sent the packet. The channelID field specifies the channel - * number upon which the packet was received. The packet field contains - * the packet that was received; this packet must be destroyed with - * enet_packet_destroy after use. - */ - ENET_EVENT_TYPE_RECEIVE = 3, - - /** a peer is disconnected because the host didn't receive the acknowledgment - * packet within certain maximum time out. The reason could be because of bad - * network connection or host crashed. - */ - ENET_EVENT_TYPE_DISCONNECT_TIMEOUT = 4, - } ENetEventType; - - /** - * An ENet event as returned by enet_host_service(). - * - * @sa enet_host_service - */ - typedef struct _ENetEvent { - ENetEventType type; /**< type of the event */ - ENetPeer * peer; /**< peer that generated a connect, disconnect or receive event */ - enet_uint8 channelID; /**< channel on the peer that generated the event, if appropriate */ - enet_uint32 data; /**< data associated with the event, if appropriate */ - ENetPacket * packet; /**< packet associated with the event, if appropriate */ - } ENetEvent; - -// =======================================================================// -// ! -// ! Public API -// ! -// =======================================================================// - - /** - * Initializes ENet globally. Must be called prior to using any functions in ENet. - * @returns 0 on success, < 0 on failure - */ - ENET_API int enet_initialize(void); - - /** - * Initializes ENet globally and supplies user-overridden callbacks. Must be called prior to using any functions in ENet. Do not use enet_initialize() if you use this variant. Make sure the ENetCallbacks structure is zeroed out so that any additional callbacks added in future versions will be properly ignored. - * - * @param version the constant ENET_VERSION should be supplied so ENet knows which version of ENetCallbacks struct to use - * @param inits user-overridden callbacks where any NULL callbacks will use ENet's defaults - * @returns 0 on success, < 0 on failure - */ - ENET_API int enet_initialize_with_callbacks(ENetVersion version, const ENetCallbacks * inits); - - /** - * Shuts down ENet globally. Should be called when a program that has initialized ENet exits. - */ - ENET_API void enet_deinitialize(void); - - /** - * Gives the linked version of the ENet library. - * @returns the version number - */ - ENET_API ENetVersion enet_linked_version(void); - - /** Returns the monotonic time in milliseconds. Its initial value is unspecified unless otherwise set. */ - ENET_API enet_uint32 enet_time_get(void); - - /** ENet socket functions */ - ENET_API ENetSocket enet_socket_create(ENetSocketType); - ENET_API int enet_socket_bind(ENetSocket, const ENetAddress *); - ENET_API int enet_socket_get_address(ENetSocket, ENetAddress *); - ENET_API int enet_socket_listen(ENetSocket, int); - ENET_API ENetSocket enet_socket_accept(ENetSocket, ENetAddress *); - ENET_API int enet_socket_connect(ENetSocket, const ENetAddress *); - ENET_API int enet_socket_send(ENetSocket, const ENetAddress *, const ENetBuffer *, size_t); - ENET_API int enet_socket_receive(ENetSocket, ENetAddress *, ENetBuffer *, size_t); - ENET_API int enet_socket_wait(ENetSocket, enet_uint32 *, enet_uint64); - ENET_API int enet_socket_set_option(ENetSocket, ENetSocketOption, int); - ENET_API int enet_socket_get_option(ENetSocket, ENetSocketOption, int *); - ENET_API int enet_socket_shutdown(ENetSocket, ENetSocketShutdown); - ENET_API void enet_socket_destroy(ENetSocket); - ENET_API int enet_socketset_select(ENetSocket, ENetSocketSet *, ENetSocketSet *, enet_uint32); - - /** Attempts to parse the printable form of the IP address in the parameter hostName - and sets the host field in the address parameter if successful. - @param address destination to store the parsed IP address - @param hostName IP address to parse - @retval 0 on success - @retval < 0 on failure - @returns the address of the given hostName in address on success - */ - ENET_API int enet_address_set_host_ip_old(ENetAddress * address, const char * hostName); - - /** Attempts to resolve the host named by the parameter hostName and sets - the host field in the address parameter if successful. - @param address destination to store resolved address - @param hostName host name to lookup - @retval 0 on success - @retval < 0 on failure - @returns the address of the given hostName in address on success - */ - ENET_API int enet_address_set_host_old(ENetAddress * address, const char * hostName); - - /** Gives the printable form of the IP address specified in the address parameter. - @param address address printed - @param hostName destination for name, must not be NULL - @param nameLength maximum length of hostName. - @returns the null-terminated name of the host in hostName on success - @retval 0 on success - @retval < 0 on failure - */ - ENET_API int enet_address_get_host_ip_old(const ENetAddress * address, char * hostName, size_t nameLength); - - /** Attempts to do a reverse lookup of the host field in the address parameter. - @param address address used for reverse lookup - @param hostName destination for name, must not be NULL - @param nameLength maximum length of hostName. - @returns the null-terminated name of the host in hostName on success - @retval 0 on success - @retval < 0 on failure - */ - ENET_API int enet_address_get_host_old(const ENetAddress * address, char * hostName, size_t nameLength); - - ENET_API int enet_address_set_host_ip_new(ENetAddress * address, const char * hostName); - ENET_API int enet_address_set_host_new(ENetAddress * address, const char * hostName); - ENET_API int enet_address_get_host_ip_new(const ENetAddress * address, char * hostName, size_t nameLength); - ENET_API int enet_address_get_host_new(const ENetAddress * address, char * hostName, size_t nameLength); - -#ifdef ENET_FEATURE_ADDRESS_MAPPING -#define enet_address_set_host_ip enet_address_set_host_ip_new -#define enet_address_set_host enet_address_set_host_new -#define enet_address_get_host_ip enet_address_get_host_ip_new -#define enet_address_get_host enet_address_get_host_new -#else -#define enet_address_set_host_ip enet_address_set_host_ip_old -#define enet_address_set_host enet_address_set_host_old -#define enet_address_get_host_ip enet_address_get_host_ip_old -#define enet_address_get_host enet_address_get_host_old -#endif - - ENET_API enet_uint32 enet_host_get_peers_count(ENetHost *); - ENET_API enet_uint32 enet_host_get_packets_sent(ENetHost *); - ENET_API enet_uint32 enet_host_get_packets_received(ENetHost *); - ENET_API enet_uint32 enet_host_get_bytes_sent(ENetHost *); - ENET_API enet_uint32 enet_host_get_bytes_received(ENetHost *); - ENET_API enet_uint32 enet_host_get_received_data(ENetHost *, enet_uint8** data); - ENET_API enet_uint32 enet_host_get_mtu(ENetHost *); - - ENET_API enet_uint32 enet_peer_get_id(ENetPeer *); - ENET_API enet_uint32 enet_peer_get_ip(ENetPeer *, char * ip, size_t ipLength); - ENET_API enet_uint16 enet_peer_get_port(ENetPeer *); - ENET_API enet_uint32 enet_peer_get_rtt(ENetPeer *); - ENET_API enet_uint64 enet_peer_get_packets_sent(ENetPeer *); - ENET_API enet_uint32 enet_peer_get_packets_lost(ENetPeer *); - ENET_API enet_uint64 enet_peer_get_bytes_sent(ENetPeer *); - ENET_API enet_uint64 enet_peer_get_bytes_received(ENetPeer *); - - ENET_API ENetPeerState enet_peer_get_state(ENetPeer *); - - ENET_API void * enet_peer_get_data(ENetPeer *); - ENET_API void enet_peer_set_data(ENetPeer *, const void *); - - ENET_API void * enet_packet_get_data(ENetPacket *); - ENET_API enet_uint32 enet_packet_get_length(ENetPacket *); - ENET_API void enet_packet_set_free_callback(ENetPacket *, void *); - - ENET_API ENetPacket * enet_packet_create_offset(const void *, size_t, size_t, enet_uint32); - ENET_API enet_uint32 enet_crc32(const ENetBuffer *, size_t); - - ENET_API ENetHost * enet_host_create(const ENetAddress *, size_t, size_t, enet_uint32, enet_uint32); - ENET_API void enet_host_destroy(ENetHost *); - ENET_API ENetPeer * enet_host_connect(ENetHost *, const ENetAddress *, size_t, enet_uint32); - ENET_API int enet_host_check_events(ENetHost *, ENetEvent *); - ENET_API int enet_host_service(ENetHost *, ENetEvent *, enet_uint32); - ENET_API int enet_host_send_raw(ENetHost *, const ENetAddress *, enet_uint8 *, size_t); - ENET_API int enet_host_send_raw_ex(ENetHost *host, const ENetAddress* address, enet_uint8* data, size_t skipBytes, size_t bytesToSend); - ENET_API void enet_host_set_intercept(ENetHost *, const ENetInterceptCallback); - ENET_API void enet_host_flush(ENetHost *); - ENET_API void enet_host_broadcast(ENetHost *, enet_uint8, ENetPacket *); - ENET_API void enet_host_compress(ENetHost *, const ENetCompressor *); - ENET_API void enet_host_channel_limit(ENetHost *, size_t); - ENET_API void enet_host_bandwidth_limit(ENetHost *, enet_uint32, enet_uint32); - extern void enet_host_bandwidth_throttle(ENetHost *); - extern enet_uint64 enet_host_random_seed(void); - - ENET_API int enet_peer_send(ENetPeer *, enet_uint8, ENetPacket *); - ENET_API ENetPacket * enet_peer_receive(ENetPeer *, enet_uint8 * channelID); - ENET_API void enet_peer_ping(ENetPeer *); - ENET_API void enet_peer_ping_interval(ENetPeer *, enet_uint32); - ENET_API void enet_peer_timeout(ENetPeer *, enet_uint32, enet_uint32, enet_uint32); - ENET_API void enet_peer_reset(ENetPeer *); - ENET_API void enet_peer_disconnect(ENetPeer *, enet_uint32); - ENET_API void enet_peer_disconnect_now(ENetPeer *, enet_uint32); - ENET_API void enet_peer_disconnect_later(ENetPeer *, enet_uint32); - ENET_API void enet_peer_throttle_configure(ENetPeer *, enet_uint32, enet_uint32, enet_uint32); - extern int enet_peer_throttle(ENetPeer *, enet_uint32); - extern void enet_peer_reset_queues(ENetPeer *); - extern void enet_peer_setup_outgoing_command(ENetPeer *, ENetOutgoingCommand *); - extern ENetOutgoingCommand * enet_peer_queue_outgoing_command(ENetPeer *, const ENetProtocol *, ENetPacket *, enet_uint32, enet_uint16); - extern ENetIncomingCommand * enet_peer_queue_incoming_command(ENetPeer *, const ENetProtocol *, const void *, size_t, enet_uint32, enet_uint32); - extern ENetAcknowledgement * enet_peer_queue_acknowledgement(ENetPeer *, const ENetProtocol *, enet_uint16); - extern void enet_peer_dispatch_incoming_unreliable_commands(ENetPeer *, ENetChannel *); - extern void enet_peer_dispatch_incoming_reliable_commands(ENetPeer *, ENetChannel *); - extern void enet_peer_on_connect(ENetPeer *); - extern void enet_peer_on_disconnect(ENetPeer *); - - extern size_t enet_protocol_command_size (enet_uint8); - -#ifdef __cplusplus -} -#endif - -#if defined(ENET_IMPLEMENTATION) && !defined(ENET_IMPLEMENTATION_DONE) -#define ENET_IMPLEMENTATION_DONE 1 - -#ifdef __cplusplus -extern "C" { -#endif - -// =======================================================================// -// ! -// ! Atomics -// ! -// =======================================================================// - -#if defined(_MSC_VER) - - #define ENET_AT_CASSERT_PRED(predicate) sizeof(char[2 * !!(predicate)-1]) - #define ENET_IS_SUPPORTED_ATOMIC(size) ENET_AT_CASSERT_PRED(size == 1 || size == 2 || size == 4 || size == 8) - #define ENET_ATOMIC_SIZEOF(variable) (ENET_IS_SUPPORTED_ATOMIC(sizeof(*(variable))), sizeof(*(variable))) - - __inline int64_t enet_at_atomic_read(char *ptr, size_t size) - { - switch (size) { - case 1: - return _InterlockedExchangeAdd8((volatile char *)ptr, 0); - case 2: - return _InterlockedExchangeAdd16((volatile SHORT *)ptr, 0); - case 4: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchangeAdd((volatile LONG *)ptr, 0); - #else - return _InterlockedExchangeAdd((volatile LONG *)ptr, 0); - #endif - case 8: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchangeAdd64((volatile LONGLONG *)ptr, 0); - #else - return _InterlockedExchangeAdd64((volatile LONGLONG *)ptr, 0); - #endif - default: - return 0xbad13bad; /* never reached */ - } - } - - __inline int64_t enet_at_atomic_write(char *ptr, int64_t value, size_t size) - { - switch (size) { - case 1: - return _InterlockedExchange8((volatile char *)ptr, (char)value); - case 2: - return _InterlockedExchange16((volatile SHORT *)ptr, (SHORT)value); - case 4: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchange((volatile LONG *)ptr, (LONG)value); - #else - return _InterlockedExchange((volatile LONG *)ptr, (LONG)value); - #endif - case 8: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchange64((volatile LONGLONG *)ptr, (LONGLONG)value); - #else - return _InterlockedExchange64((volatile LONGLONG *)ptr, (LONGLONG)value); - #endif - default: - return 0xbad13bad; /* never reached */ - } - } - - __inline int64_t enet_at_atomic_cas(char *ptr, int64_t new_val, int64_t old_val, size_t size) - { - switch (size) { - case 1: - return _InterlockedCompareExchange8((volatile char *)ptr, (char)new_val, (char)old_val); - case 2: - return _InterlockedCompareExchange16((volatile SHORT *)ptr, (SHORT)new_val, - (SHORT)old_val); - case 4: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedCompareExchange((volatile LONG *)ptr, (LONG)new_val, (LONG)old_val); - #else - return _InterlockedCompareExchange((volatile LONG *)ptr, (LONG)new_val, (LONG)old_val); - #endif - case 8: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedCompareExchange64((volatile LONGLONG *)ptr, (LONGLONG)new_val, - (LONGLONG)old_val); - #else - return _InterlockedCompareExchange64((volatile LONGLONG *)ptr, (LONGLONG)new_val, - (LONGLONG)old_val); - #endif - default: - return 0xbad13bad; /* never reached */ - } - } - - __inline int64_t enet_at_atomic_inc(char *ptr, int64_t delta, size_t data_size) - { - switch (data_size) { - case 1: - return _InterlockedExchangeAdd8((volatile char *)ptr, (char)delta); - case 2: - return _InterlockedExchangeAdd16((volatile SHORT *)ptr, (SHORT)delta); - case 4: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchangeAdd((volatile LONG *)ptr, (LONG)delta); - #else - return _InterlockedExchangeAdd((volatile LONG *)ptr, (LONG)delta); - #endif - case 8: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchangeAdd64((volatile LONGLONG *)ptr, (LONGLONG)delta); - #else - return _InterlockedExchangeAdd64((volatile LONGLONG *)ptr, (LONGLONG)delta); - #endif - default: - return 0xbad13bad; /* never reached */ - } - } - - #define ENET_ATOMIC_READ(variable) enet_at_atomic_read((char *)(variable), ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_WRITE(variable, new_val) \ - enet_at_atomic_write((char *)(variable), (int64_t)(new_val), ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_CAS(variable, old_value, new_val) \ - enet_at_atomic_cas((char *)(variable), (int64_t)(new_val), (int64_t)(old_value), \ - ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_INC(variable) enet_at_atomic_inc((char *)(variable), 1, ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_DEC(variable) enet_at_atomic_inc((char *)(variable), -1, ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_INC_BY(variable, delta) \ - enet_at_atomic_inc((char *)(variable), (delta), ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_DEC_BY(variable, delta) \ - enet_at_atomic_inc((char *)(variable), -(delta), ENET_ATOMIC_SIZEOF(variable)) - -#elif defined(__GNUC__) || defined(__clang__) - - #if defined(__clang__) || (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7)) - #define AT_HAVE_ATOMICS - #endif - - /* We want to use __atomic built-ins if possible because the __sync primitives are - deprecated, because the __atomic build-ins allow us to use ENET_ATOMIC_WRITE on - uninitialized memory without running into undefined behavior, and because the - __atomic versions generate more efficient code since we don't need to rely on - CAS when we don't actually want it. - - Note that we use acquire-release memory order (like mutexes do). We could use - sequentially consistent memory order but that has lower performance and is - almost always unneeded. */ - #ifdef AT_HAVE_ATOMICS - #define ENET_ATOMIC_READ(ptr) __atomic_load_n((ptr), __ATOMIC_ACQUIRE) - #define ENET_ATOMIC_WRITE(ptr, value) __atomic_store_n((ptr), (value), __ATOMIC_RELEASE) - - #ifndef typeof - #define typeof __typeof__ - #endif - - /* clang_analyzer doesn't know that CAS writes to memory so it complains about - potentially lost data. Replace the code with the equivalent non-sync code. */ - #ifdef __clang_analyzer__ - - #define ENET_ATOMIC_CAS(ptr, old_value, new_value) \ - ({ \ - typeof(*(ptr)) ENET_ATOMIC_CAS_old_actual_ = (*(ptr)); \ - if (ATOMIC_CAS_old_actual_ == (old_value)) { \ - *(ptr) = new_value; \ - } \ - ENET_ATOMIC_CAS_old_actual_; \ - }) - - #else - - /* Could use __auto_type instead of typeof but that shouldn't work in C++. - The ({ }) syntax is a GCC extension called statement expression. It lets - us return a value out of the macro. - - TODO We should return bool here instead of the old value to avoid the ABA - problem. */ - #define ENET_ATOMIC_CAS(ptr, old_value, new_value) \ - ({ \ - typeof(*(ptr)) ENET_ATOMIC_CAS_expected_ = (old_value); \ - __atomic_compare_exchange_n((ptr), &ENET_ATOMIC_CAS_expected_, (new_value), false, \ - __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE); \ - ENET_ATOMIC_CAS_expected_; \ - }) - - #endif /* __clang_analyzer__ */ - - #define ENET_ATOMIC_INC(ptr) __atomic_fetch_add((ptr), 1, __ATOMIC_ACQ_REL) - #define ENET_ATOMIC_DEC(ptr) __atomic_fetch_sub((ptr), 1, __ATOMIC_ACQ_REL) - #define ENET_ATOMIC_INC_BY(ptr, delta) __atomic_fetch_add((ptr), (delta), __ATOMIC_ACQ_REL) - #define ENET_ATOMIC_DEC_BY(ptr, delta) __atomic_fetch_sub((ptr), (delta), __ATOMIC_ACQ_REL) - - #else - - #define ENET_ATOMIC_READ(variable) __sync_fetch_and_add(variable, 0) - #define ENET_ATOMIC_WRITE(variable, new_val) \ - (void) __sync_val_compare_and_swap((variable), *(variable), (new_val)) - #define ENET_ATOMIC_CAS(variable, old_value, new_val) \ - __sync_val_compare_and_swap((variable), (old_value), (new_val)) - #define ENET_ATOMIC_INC(variable) __sync_fetch_and_add((variable), 1) - #define ENET_ATOMIC_DEC(variable) __sync_fetch_and_sub((variable), 1) - #define ENET_ATOMIC_INC_BY(variable, delta) __sync_fetch_and_add((variable), (delta), 1) - #define ENET_ATOMIC_DEC_BY(variable, delta) __sync_fetch_and_sub((variable), (delta), 1) - - #endif /* AT_HAVE_ATOMICS */ - - #undef AT_HAVE_ATOMICS - -#endif /* defined(_MSC_VER) */ - -// =======================================================================// -// ! -// ! Callbacks -// ! -// =======================================================================// - - ENetCallbacks callbacks = { malloc, free, abort, enet_packet_create, enet_packet_destroy }; - - int enet_initialize_with_callbacks(ENetVersion version, const ENetCallbacks *inits) { - if (version < ENET_VERSION_CREATE(1, 3, 0)) { - return -1; - } - - if (inits->malloc != NULL || inits->free != NULL) { - if (inits->malloc == NULL || inits->free == NULL) { - return -1; - } - - callbacks.malloc = inits->malloc; - callbacks.free = inits->free; - } - - if (inits->no_memory != NULL) { - callbacks.no_memory = inits->no_memory; - } - - if (inits->packet_create != NULL || inits->packet_destroy != NULL) { - if (inits->packet_create == NULL || inits->packet_destroy == NULL) { - return -1; - } - - callbacks.packet_create = inits->packet_create; - callbacks.packet_destroy = inits->packet_destroy; - } - - return enet_initialize(); - } - - ENetVersion enet_linked_version(void) { - return ENET_VERSION; - } - - void * enet_malloc(size_t size) { - void *memory = callbacks.malloc(size); - - if (memory == NULL) { - callbacks.no_memory(); - } - - return memory; - } - - void enet_free(void *memory) { - callbacks.free(memory); - } - -// =======================================================================// -// ! -// ! List -// ! -// =======================================================================// - - void enet_list_clear(ENetList *list) { - list->sentinel.next = &list->sentinel; - list->sentinel.previous = &list->sentinel; - } - - ENetListIterator enet_list_insert(ENetListIterator position, void *data) { - ENetListIterator result = (ENetListIterator)data; - - result->previous = position->previous; - result->next = position; - - result->previous->next = result; - position->previous = result; - - return result; - } - - void *enet_list_remove(ENetListIterator position) { - position->previous->next = position->next; - position->next->previous = position->previous; - - return position; - } - - ENetListIterator enet_list_move(ENetListIterator position, void *dataFirst, void *dataLast) { - ENetListIterator first = (ENetListIterator)dataFirst; - ENetListIterator last = (ENetListIterator)dataLast; - - first->previous->next = last->next; - last->next->previous = first->previous; - - first->previous = position->previous; - last->next = position; - - first->previous->next = first; - position->previous = last; - - return first; - } - - size_t enet_list_size(ENetList *list) { - size_t size = 0; - ENetListIterator position; - - for (position = enet_list_begin(list); position != enet_list_end(list); position = enet_list_next(position)) { - ++size; - } - - return size; - } - -// =======================================================================// -// ! -// ! Packet -// ! -// =======================================================================// - - /** - * Creates a packet that may be sent to a peer. - * @param data initial contents of the packet's data; the packet's data will remain uninitialized if data is NULL. - * @param dataLength size of the data allocated for this packet - * @param flags flags for this packet as described for the ENetPacket structure. - * @returns the packet on success, NULL on failure - */ - ENetPacket *enet_packet_create(const void *data, size_t dataLength, enet_uint32 flags) { - ENetPacket *packet; - if (flags & ENET_PACKET_FLAG_NO_ALLOCATE) { - packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket)); - if (packet == NULL) { - return NULL; - } - - packet->data = (enet_uint8 *)data; - } - else { - packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket) + dataLength); - if (packet == NULL) { - return NULL; - } - - packet->data = (enet_uint8 *)packet + sizeof(ENetPacket); - - if (data != NULL) { - memcpy(packet->data, data, dataLength); - } - } - - packet->referenceCount = 0; - packet->flags = flags; - packet->dataLength = dataLength; - packet->freeCallback = NULL; - packet->userData = NULL; - - return packet; - } - - /** Attempts to resize the data in the packet to length specified in the - dataLength parameter - @param packet packet to resize - @param dataLength new size for the packet data - @returns new packet pointer on success, NULL on failure - */ - ENetPacket* enet_packet_resize(ENetPacket * packet, size_t dataLength) - { - ENetPacket *newPacket = NULL; - - if (dataLength <= packet->dataLength || (packet->flags & ENET_PACKET_FLAG_NO_ALLOCATE)) - { - packet->dataLength = dataLength; - - return packet; - } - - newPacket = (ENetPacket *)enet_malloc(sizeof (ENetPacket) + dataLength); - if (newPacket == NULL) - return NULL; - - memcpy(newPacket, packet, sizeof(ENetPacket) + packet->dataLength); - newPacket->data = (enet_uint8 *)newPacket + sizeof(ENetPacket); - newPacket->dataLength = dataLength; - enet_free(packet); - - return newPacket; - } - - ENetPacket *enet_packet_create_offset(const void *data, size_t dataLength, size_t dataOffset, enet_uint32 flags) { - ENetPacket *packet; - if (flags & ENET_PACKET_FLAG_NO_ALLOCATE) { - packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket)); - if (packet == NULL) { - return NULL; - } - - packet->data = (enet_uint8 *)data; - } - else { - packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket) + dataLength + dataOffset); - if (packet == NULL) { - return NULL; - } - - packet->data = (enet_uint8 *)packet + sizeof(ENetPacket); - - if (data != NULL) { - memcpy(packet->data + dataOffset, data, dataLength); - } - } - - packet->referenceCount = 0; - packet->flags = flags; - packet->dataLength = dataLength + dataOffset; - packet->freeCallback = NULL; - packet->userData = NULL; - - return packet; - } - - ENetPacket *enet_packet_copy(ENetPacket *packet) { - return enet_packet_create(packet->data, packet->dataLength, packet->flags); - } - - /** - * Destroys the packet and deallocates its data. - * @param packet packet to be destroyed - */ - void enet_packet_destroy(ENetPacket *packet) { - if (packet == NULL) { - return; - } - - if (packet->freeCallback != NULL) { - (*packet->freeCallback)((void *)packet); - } - - enet_free(packet); - } - - static int initializedCRC32 = 0; - static enet_uint32 crcTable[256]; - - static enet_uint32 reflect_crc(int val, int bits) { - int result = 0, bit; - - for (bit = 0; bit < bits; bit++) { - if (val & 1) { result |= 1 << (bits - 1 - bit); } - val >>= 1; - } - - return result; - } - - static void initialize_crc32(void) { - int byte; - - for (byte = 0; byte < 256; ++byte) { - enet_uint32 crc = reflect_crc(byte, 8) << 24; - int offset; - - for (offset = 0; offset < 8; ++offset) { - if (crc & 0x80000000) { - crc = (crc << 1) ^ 0x04c11db7; - } else { - crc <<= 1; - } - } - - crcTable[byte] = reflect_crc(crc, 32); - } - - initializedCRC32 = 1; - } - - enet_uint32 enet_crc32(const ENetBuffer *buffers, size_t bufferCount) { - enet_uint32 crc = 0xFFFFFFFF; - - if (!initializedCRC32) { initialize_crc32(); } - - while (bufferCount-- > 0) { - const enet_uint8 *data = (const enet_uint8 *)buffers->data; - const enet_uint8 *dataEnd = &data[buffers->dataLength]; - - while (data < dataEnd) { - crc = (crc >> 8) ^ crcTable[(crc & 0xFF) ^ *data++]; - } - - ++buffers; - } - - return ENET_HOST_TO_NET_32(~crc); - } - -// =======================================================================// -// ! -// ! Protocol -// ! -// =======================================================================// - - static size_t commandSizes[ENET_PROTOCOL_COMMAND_COUNT] = { - 0, - sizeof(ENetProtocolAcknowledge), - sizeof(ENetProtocolConnect), - sizeof(ENetProtocolVerifyConnect), - sizeof(ENetProtocolDisconnect), - sizeof(ENetProtocolPing), - sizeof(ENetProtocolSendReliable), - sizeof(ENetProtocolSendUnreliable), - sizeof(ENetProtocolSendFragment), - sizeof(ENetProtocolSendUnsequenced), - sizeof(ENetProtocolBandwidthLimit), - sizeof(ENetProtocolThrottleConfigure), - sizeof(ENetProtocolSendFragment) - }; - - size_t enet_protocol_command_size(enet_uint8 commandNumber) { - return commandSizes[commandNumber & ENET_PROTOCOL_COMMAND_MASK]; - } - - static void enet_protocol_change_state(ENetHost *host, ENetPeer *peer, ENetPeerState state) { - ENET_UNUSED(host) - - if (state == ENET_PEER_STATE_CONNECTED || state == ENET_PEER_STATE_DISCONNECT_LATER) { - enet_peer_on_connect(peer); - } else { - enet_peer_on_disconnect(peer); - } - - peer->state = state; - } - - static void enet_protocol_dispatch_state(ENetHost *host, ENetPeer *peer, ENetPeerState state) { - enet_protocol_change_state(host, peer, state); - - if (!peer->needsDispatch) { - enet_list_insert(enet_list_end(&host->dispatchQueue), &peer->dispatchList); - peer->needsDispatch = 1; - } - } - - static int enet_protocol_dispatch_incoming_commands(ENetHost *host, ENetEvent *event) { - while (!enet_list_empty(&host->dispatchQueue)) { - ENetPeer *peer = (ENetPeer *) enet_list_remove(enet_list_begin(&host->dispatchQueue)); - peer->needsDispatch = 0; - - switch (peer->state) { - case ENET_PEER_STATE_CONNECTION_PENDING: - case ENET_PEER_STATE_CONNECTION_SUCCEEDED: - enet_protocol_change_state(host, peer, ENET_PEER_STATE_CONNECTED); - - event->type = ENET_EVENT_TYPE_CONNECT; - event->peer = peer; - event->data = peer->eventData; - - return 1; - - case ENET_PEER_STATE_ZOMBIE: - host->recalculateBandwidthLimits = 1; - - event->type = ENET_EVENT_TYPE_DISCONNECT; - event->peer = peer; - event->data = peer->eventData; - - enet_peer_reset(peer); - - return 1; - - case ENET_PEER_STATE_CONNECTED: - if (enet_list_empty(&peer->dispatchedCommands)) { - continue; - } - - event->packet = enet_peer_receive(peer, &event->channelID); - if (event->packet == NULL) { - continue; - } - - event->type = ENET_EVENT_TYPE_RECEIVE; - event->peer = peer; - - if (!enet_list_empty(&peer->dispatchedCommands)) { - peer->needsDispatch = 1; - enet_list_insert(enet_list_end(&host->dispatchQueue), &peer->dispatchList); - } - - return 1; - - default: - break; - } - } - - return 0; - } /* enet_protocol_dispatch_incoming_commands */ - - static void enet_protocol_notify_connect(ENetHost *host, ENetPeer *peer, ENetEvent *event) { - host->recalculateBandwidthLimits = 1; - - if (event != NULL) { - enet_protocol_change_state(host, peer, ENET_PEER_STATE_CONNECTED); - - peer->totalDataSent = 0; - peer->totalDataReceived = 0; - peer->totalPacketsSent = 0; - peer->totalPacketsLost = 0; - - event->type = ENET_EVENT_TYPE_CONNECT; - event->peer = peer; - event->data = peer->eventData; - } else { - enet_protocol_dispatch_state(host, peer, peer->state == ENET_PEER_STATE_CONNECTING ? ENET_PEER_STATE_CONNECTION_SUCCEEDED : ENET_PEER_STATE_CONNECTION_PENDING); - } - } - - static void enet_protocol_notify_disconnect(ENetHost *host, ENetPeer *peer, ENetEvent *event) { - if (peer->state >= ENET_PEER_STATE_CONNECTION_PENDING) { - host->recalculateBandwidthLimits = 1; - } - - if (peer->state != ENET_PEER_STATE_CONNECTING && peer->state < ENET_PEER_STATE_CONNECTION_SUCCEEDED) { - enet_peer_reset(peer); - } else if (event != NULL) { - event->type = ENET_EVENT_TYPE_DISCONNECT; - event->peer = peer; - event->data = 0; - - enet_peer_reset(peer); - } else { - peer->eventData = 0; - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - } - } - - static void enet_protocol_notify_disconnect_timeout (ENetHost * host, ENetPeer * peer, ENetEvent * event) { - if (peer->state >= ENET_PEER_STATE_CONNECTION_PENDING) { - host->recalculateBandwidthLimits = 1; - } - - if (peer->state != ENET_PEER_STATE_CONNECTING && peer->state < ENET_PEER_STATE_CONNECTION_SUCCEEDED) { - enet_peer_reset (peer); - } - else if (event != NULL) { - event->type = ENET_EVENT_TYPE_DISCONNECT_TIMEOUT; - event->peer = peer; - event->data = 0; - - enet_peer_reset(peer); - } - else { - peer->eventData = 0; - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - } - } - - static void enet_protocol_remove_sent_unreliable_commands(ENetPeer *peer) { - ENetOutgoingCommand *outgoingCommand; - - while (!enet_list_empty(&peer->sentUnreliableCommands)) { - outgoingCommand = (ENetOutgoingCommand *) enet_list_front(&peer->sentUnreliableCommands); - enet_list_remove(&outgoingCommand->outgoingCommandList); - - if (outgoingCommand->packet != NULL) { - --outgoingCommand->packet->referenceCount; - - if (outgoingCommand->packet->referenceCount == 0) { - outgoingCommand->packet->flags |= ENET_PACKET_FLAG_SENT; - callbacks.packet_destroy(outgoingCommand->packet); - } - } - - enet_free(outgoingCommand); - } - } - - static ENetProtocolCommand enet_protocol_remove_sent_reliable_command(ENetPeer *peer, enet_uint16 reliableSequenceNumber, enet_uint8 channelID) { - ENetOutgoingCommand *outgoingCommand = NULL; - ENetListIterator currentCommand; - ENetProtocolCommand commandNumber; - int wasSent = 1; - - for (currentCommand = enet_list_begin(&peer->sentReliableCommands); - currentCommand != enet_list_end(&peer->sentReliableCommands); - currentCommand = enet_list_next(currentCommand) - ) { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - if (outgoingCommand->reliableSequenceNumber == reliableSequenceNumber && outgoingCommand->command.header.channelID == channelID) { - break; - } - } - - if (currentCommand == enet_list_end(&peer->sentReliableCommands)) { - for (currentCommand = enet_list_begin(&peer->outgoingReliableCommands); - currentCommand != enet_list_end(&peer->outgoingReliableCommands); - currentCommand = enet_list_next(currentCommand) - ) { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - if (outgoingCommand->sendAttempts < 1) { return ENET_PROTOCOL_COMMAND_NONE; } - if (outgoingCommand->reliableSequenceNumber == reliableSequenceNumber && outgoingCommand->command.header.channelID == channelID) { - break; - } - } - - if (currentCommand == enet_list_end(&peer->outgoingReliableCommands)) { - return ENET_PROTOCOL_COMMAND_NONE; - } - - wasSent = 0; - } - - if (outgoingCommand == NULL) { - return ENET_PROTOCOL_COMMAND_NONE; - } - - if (channelID < peer->channelCount) { - ENetChannel *channel = &peer->channels[channelID]; - enet_uint16 reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - if (channel->reliableWindows[reliableWindow] > 0) { - --channel->reliableWindows[reliableWindow]; - if (!channel->reliableWindows[reliableWindow]) { - channel->usedReliableWindows &= ~(1 << reliableWindow); - } - } - } - - commandNumber = (ENetProtocolCommand) (outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK); - enet_list_remove(&outgoingCommand->outgoingCommandList); - - if (outgoingCommand->packet != NULL) { - if (wasSent) { - peer->reliableDataInTransit -= outgoingCommand->fragmentLength; - } - - --outgoingCommand->packet->referenceCount; - - if (outgoingCommand->packet->referenceCount == 0) { - outgoingCommand->packet->flags |= ENET_PACKET_FLAG_SENT; - callbacks.packet_destroy(outgoingCommand->packet); - } - } - - enet_free(outgoingCommand); - - if (enet_list_empty(&peer->sentReliableCommands)) { - return commandNumber; - } - - outgoingCommand = (ENetOutgoingCommand *) enet_list_front(&peer->sentReliableCommands); - peer->nextTimeout = outgoingCommand->sentTime + outgoingCommand->roundTripTimeout; - - return commandNumber; - } /* enet_protocol_remove_sent_reliable_command */ - - static ENetPeer * enet_protocol_handle_connect(ENetHost *host, ENetProtocolHeader *header, ENetProtocol *command) { - ENET_UNUSED(header) - - enet_uint8 incomingSessionID, outgoingSessionID; - enet_uint32 mtu, windowSize; - ENetChannel *channel; - size_t channelCount, duplicatePeers = 0; - ENetPeer *currentPeer, *peer = NULL; - ENetProtocol verifyCommand; - - channelCount = ENET_NET_TO_HOST_32(command->connect.channelCount); - - if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT || channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) { - return NULL; - } - - for (currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - if (currentPeer->state == ENET_PEER_STATE_DISCONNECTED) { - if (peer == NULL) { - peer = currentPeer; - } - } else if (currentPeer->state != ENET_PEER_STATE_CONNECTING && in6_equal(currentPeer->address.host, host->receivedAddress.host)) { - if (currentPeer->address.port == host->receivedAddress.port && currentPeer->connectID == command->connect.connectID) { - return NULL; - } - - ++duplicatePeers; - } - } - - if (peer == NULL || duplicatePeers >= host->duplicatePeers) { - return NULL; - } - - if (channelCount > host->channelLimit) { - channelCount = host->channelLimit; - } - peer->channels = (ENetChannel *) enet_malloc(channelCount * sizeof(ENetChannel)); - if (peer->channels == NULL) { - return NULL; - } - peer->channelCount = channelCount; - peer->state = ENET_PEER_STATE_ACKNOWLEDGING_CONNECT; - peer->connectID = command->connect.connectID; - peer->address = host->receivedAddress; - peer->outgoingPeerID = ENET_NET_TO_HOST_16(command->connect.outgoingPeerID); - peer->incomingBandwidth = ENET_NET_TO_HOST_32(command->connect.incomingBandwidth); - peer->outgoingBandwidth = ENET_NET_TO_HOST_32(command->connect.outgoingBandwidth); - peer->packetThrottleInterval = ENET_NET_TO_HOST_32(command->connect.packetThrottleInterval); - peer->packetThrottleAcceleration = ENET_NET_TO_HOST_32(command->connect.packetThrottleAcceleration); - peer->packetThrottleDeceleration = ENET_NET_TO_HOST_32(command->connect.packetThrottleDeceleration); - peer->eventData = ENET_NET_TO_HOST_32(command->connect.data); - - incomingSessionID = command->connect.incomingSessionID == 0xFF ? peer->outgoingSessionID : command->connect.incomingSessionID; - incomingSessionID = (incomingSessionID + 1) & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - if (incomingSessionID == peer->outgoingSessionID) { - incomingSessionID = (incomingSessionID + 1) - & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - } - peer->outgoingSessionID = incomingSessionID; - - outgoingSessionID = command->connect.outgoingSessionID == 0xFF ? peer->incomingSessionID : command->connect.outgoingSessionID; - outgoingSessionID = (outgoingSessionID + 1) & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - if (outgoingSessionID == peer->incomingSessionID) { - outgoingSessionID = (outgoingSessionID + 1) - & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - } - peer->incomingSessionID = outgoingSessionID; - - for (channel = peer->channels; channel < &peer->channels[channelCount]; ++channel) { - channel->outgoingReliableSequenceNumber = 0; - channel->outgoingUnreliableSequenceNumber = 0; - channel->incomingReliableSequenceNumber = 0; - channel->incomingUnreliableSequenceNumber = 0; - - enet_list_clear(&channel->incomingReliableCommands); - enet_list_clear(&channel->incomingUnreliableCommands); - - channel->usedReliableWindows = 0; - memset(channel->reliableWindows, 0, sizeof(channel->reliableWindows)); - } - - mtu = ENET_NET_TO_HOST_32(command->connect.mtu); - - if (mtu < ENET_PROTOCOL_MINIMUM_MTU) { - mtu = ENET_PROTOCOL_MINIMUM_MTU; - } else if (mtu > ENET_PROTOCOL_MAXIMUM_MTU) { - mtu = ENET_PROTOCOL_MAXIMUM_MTU; - } - - peer->mtu = mtu; - - if (host->outgoingBandwidth == 0 && peer->incomingBandwidth == 0) { - peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } else if (host->outgoingBandwidth == 0 || peer->incomingBandwidth == 0) { - peer->windowSize = (ENET_MAX(host->outgoingBandwidth, peer->incomingBandwidth) / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else { - peer->windowSize = (ENET_MIN(host->outgoingBandwidth, peer->incomingBandwidth) / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } - - if (peer->windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) { - peer->windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else if (peer->windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) { - peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } - - if (host->incomingBandwidth == 0) { - windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } else { - windowSize = (host->incomingBandwidth / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } - - if (windowSize > ENET_NET_TO_HOST_32(command->connect.windowSize)) { - windowSize = ENET_NET_TO_HOST_32(command->connect.windowSize); - } - - if (windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) { - windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else if (windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) { - windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } - - verifyCommand.header.command = ENET_PROTOCOL_COMMAND_VERIFY_CONNECT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - verifyCommand.header.channelID = 0xFF; - verifyCommand.verifyConnect.outgoingPeerID = ENET_HOST_TO_NET_16(peer->incomingPeerID); - verifyCommand.verifyConnect.incomingSessionID = incomingSessionID; - verifyCommand.verifyConnect.outgoingSessionID = outgoingSessionID; - verifyCommand.verifyConnect.mtu = ENET_HOST_TO_NET_32(peer->mtu); - verifyCommand.verifyConnect.windowSize = ENET_HOST_TO_NET_32(windowSize); - verifyCommand.verifyConnect.channelCount = ENET_HOST_TO_NET_32(channelCount); - verifyCommand.verifyConnect.incomingBandwidth = ENET_HOST_TO_NET_32(host->incomingBandwidth); - verifyCommand.verifyConnect.outgoingBandwidth = ENET_HOST_TO_NET_32(host->outgoingBandwidth); - verifyCommand.verifyConnect.packetThrottleInterval = ENET_HOST_TO_NET_32(peer->packetThrottleInterval); - verifyCommand.verifyConnect.packetThrottleAcceleration = ENET_HOST_TO_NET_32(peer->packetThrottleAcceleration); - verifyCommand.verifyConnect.packetThrottleDeceleration = ENET_HOST_TO_NET_32(peer->packetThrottleDeceleration); - verifyCommand.verifyConnect.connectID = peer->connectID; - - enet_peer_queue_outgoing_command(peer, &verifyCommand, NULL, 0, 0); - return peer; - } /* enet_protocol_handle_connect */ - - static int enet_protocol_handle_send_reliable(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) { - size_t dataLength; - - if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) { - return -1; - } - - dataLength = ENET_NET_TO_HOST_16(command->sendReliable.dataLength); - *currentData += dataLength; - - if (dataLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) { - return -1; - } - - if (enet_peer_queue_incoming_command(peer, command, (const enet_uint8 *) command + sizeof(ENetProtocolSendReliable), dataLength, ENET_PACKET_FLAG_RELIABLE, 0) == NULL) { - return -1; - } - - return 0; - } - - static int enet_protocol_handle_send_unsequenced(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) { - enet_uint32 unsequencedGroup, index; - size_t dataLength; - - if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) { - return -1; - } - - dataLength = ENET_NET_TO_HOST_16(command->sendUnsequenced.dataLength); - *currentData += dataLength; - if (dataLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) { - return -1; - } - - unsequencedGroup = ENET_NET_TO_HOST_16(command->sendUnsequenced.unsequencedGroup); - index = unsequencedGroup % ENET_PEER_UNSEQUENCED_WINDOW_SIZE; - - if (unsequencedGroup < peer->incomingUnsequencedGroup) { - unsequencedGroup += 0x10000; - } - - if (unsequencedGroup >= (enet_uint32) peer->incomingUnsequencedGroup + ENET_PEER_FREE_UNSEQUENCED_WINDOWS * ENET_PEER_UNSEQUENCED_WINDOW_SIZE) { - return 0; - } - - unsequencedGroup &= 0xFFFF; - - if (unsequencedGroup - index != peer->incomingUnsequencedGroup) { - peer->incomingUnsequencedGroup = unsequencedGroup - index; - memset(peer->unsequencedWindow, 0, sizeof(peer->unsequencedWindow)); - } else if (peer->unsequencedWindow[index / 32] & (1 << (index % 32))) { - return 0; - } - - if (enet_peer_queue_incoming_command(peer, command, (const enet_uint8 *) command + sizeof(ENetProtocolSendUnsequenced), dataLength, ENET_PACKET_FLAG_UNSEQUENCED,0) == NULL) { - return -1; - } - - peer->unsequencedWindow[index / 32] |= 1 << (index % 32); - - return 0; - } /* enet_protocol_handle_send_unsequenced */ - - static int enet_protocol_handle_send_unreliable(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, - enet_uint8 **currentData) { - size_t dataLength; - - if (command->header.channelID >= peer->channelCount || - (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) - { - return -1; - } - - dataLength = ENET_NET_TO_HOST_16(command->sendUnreliable.dataLength); - *currentData += dataLength; - if (dataLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) { - return -1; - } - - if (enet_peer_queue_incoming_command(peer, command, (const enet_uint8 *) command + sizeof(ENetProtocolSendUnreliable), dataLength, 0, 0) == NULL) { - return -1; - } - - return 0; - } - - static int enet_protocol_handle_send_fragment(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) { - enet_uint32 fragmentNumber, fragmentCount, fragmentOffset, fragmentLength, startSequenceNumber, totalLength; - ENetChannel *channel; - enet_uint16 startWindow, currentWindow; - ENetListIterator currentCommand; - ENetIncomingCommand *startCommand = NULL; - - if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) { - return -1; - } - - fragmentLength = ENET_NET_TO_HOST_16(command->sendFragment.dataLength); - *currentData += fragmentLength; - if (fragmentLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) { - return -1; - } - - channel = &peer->channels[command->header.channelID]; - startSequenceNumber = ENET_NET_TO_HOST_16(command->sendFragment.startSequenceNumber); - startWindow = startSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (startSequenceNumber < channel->incomingReliableSequenceNumber) { - startWindow += ENET_PEER_RELIABLE_WINDOWS; - } - - if (startWindow < currentWindow || startWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) { - return 0; - } - - fragmentNumber = ENET_NET_TO_HOST_32(command->sendFragment.fragmentNumber); - fragmentCount = ENET_NET_TO_HOST_32(command->sendFragment.fragmentCount); - fragmentOffset = ENET_NET_TO_HOST_32(command->sendFragment.fragmentOffset); - totalLength = ENET_NET_TO_HOST_32(command->sendFragment.totalLength); - - if (fragmentCount > ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT || - fragmentNumber >= fragmentCount || - totalLength > host->maximumPacketSize || - fragmentOffset >= totalLength || - fragmentLength > totalLength - fragmentOffset - ) { - return -1; - } - - for (currentCommand = enet_list_previous(enet_list_end(&channel->incomingReliableCommands)); - currentCommand != enet_list_end(&channel->incomingReliableCommands); - currentCommand = enet_list_previous(currentCommand) - ) { - ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (startSequenceNumber >= channel->incomingReliableSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - continue; - } - } else if (incomingCommand->reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber <= startSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < startSequenceNumber) { - break; - } - - if ((incomingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK) != - ENET_PROTOCOL_COMMAND_SEND_FRAGMENT || - totalLength != incomingCommand->packet->dataLength || - fragmentCount != incomingCommand->fragmentCount - ) { - return -1; - } - - startCommand = incomingCommand; - break; - } - } - - if (startCommand == NULL) { - ENetProtocol hostCommand = *command; - hostCommand.header.reliableSequenceNumber = startSequenceNumber; - startCommand = enet_peer_queue_incoming_command(peer, &hostCommand, NULL, totalLength, ENET_PACKET_FLAG_RELIABLE, fragmentCount); - if (startCommand == NULL) { - return -1; - } - } - - if ((startCommand->fragments[fragmentNumber / 32] & (1 << (fragmentNumber % 32))) == 0) { - --startCommand->fragmentsRemaining; - startCommand->fragments[fragmentNumber / 32] |= (1 << (fragmentNumber % 32)); - - if (fragmentOffset + fragmentLength > startCommand->packet->dataLength) { - fragmentLength = startCommand->packet->dataLength - fragmentOffset; - } - - memcpy(startCommand->packet->data + fragmentOffset, (enet_uint8 *) command + sizeof(ENetProtocolSendFragment), fragmentLength); - - if (startCommand->fragmentsRemaining <= 0) { - enet_peer_dispatch_incoming_reliable_commands(peer, channel); - } - } - - return 0; - } /* enet_protocol_handle_send_fragment */ - - static int enet_protocol_handle_send_unreliable_fragment(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) { - enet_uint32 fragmentNumber, fragmentCount, fragmentOffset, fragmentLength, reliableSequenceNumber, startSequenceNumber, totalLength; - enet_uint16 reliableWindow, currentWindow; - ENetChannel *channel; - ENetListIterator currentCommand; - ENetIncomingCommand *startCommand = NULL; - - if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) { - return -1; - } - - fragmentLength = ENET_NET_TO_HOST_16(command->sendFragment.dataLength); - *currentData += fragmentLength; - if (fragmentLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) { - return -1; - } - - channel = &peer->channels[command->header.channelID]; - reliableSequenceNumber = command->header.reliableSequenceNumber; - startSequenceNumber = ENET_NET_TO_HOST_16(command->sendFragment.startSequenceNumber); - - reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - } - - if (reliableWindow < currentWindow || reliableWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) { - return 0; - } - - if (reliableSequenceNumber == channel->incomingReliableSequenceNumber && startSequenceNumber <= channel->incomingUnreliableSequenceNumber) { - return 0; - } - - fragmentNumber = ENET_NET_TO_HOST_32(command->sendFragment.fragmentNumber); - fragmentCount = ENET_NET_TO_HOST_32(command->sendFragment.fragmentCount); - fragmentOffset = ENET_NET_TO_HOST_32(command->sendFragment.fragmentOffset); - totalLength = ENET_NET_TO_HOST_32(command->sendFragment.totalLength); - - if (fragmentCount > ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT || - fragmentNumber >= fragmentCount || - totalLength > host->maximumPacketSize || - fragmentOffset >= totalLength || - fragmentLength > totalLength - fragmentOffset - ) { - return -1; - } - - for (currentCommand = enet_list_previous(enet_list_end(&channel->incomingUnreliableCommands)); - currentCommand != enet_list_end(&channel->incomingUnreliableCommands); - currentCommand = enet_list_previous(currentCommand) - ) { - ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - continue; - } - } else if (incomingCommand->reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber < reliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber > reliableSequenceNumber) { - continue; - } - - if (incomingCommand->unreliableSequenceNumber <= startSequenceNumber) { - if (incomingCommand->unreliableSequenceNumber < startSequenceNumber) { - break; - } - - if ((incomingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK) != - ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT || - totalLength != incomingCommand->packet->dataLength || - fragmentCount != incomingCommand->fragmentCount - ) { - return -1; - } - - startCommand = incomingCommand; - break; - } - } - - if (startCommand == NULL) { - startCommand = enet_peer_queue_incoming_command(peer, command, NULL, totalLength, - ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT, fragmentCount); - if (startCommand == NULL) { - return -1; - } - } - - if ((startCommand->fragments[fragmentNumber / 32] & (1 << (fragmentNumber % 32))) == 0) { - --startCommand->fragmentsRemaining; - startCommand->fragments[fragmentNumber / 32] |= (1 << (fragmentNumber % 32)); - - if (fragmentOffset + fragmentLength > startCommand->packet->dataLength) { - fragmentLength = startCommand->packet->dataLength - fragmentOffset; - } - - memcpy(startCommand->packet->data + fragmentOffset, (enet_uint8 *) command + sizeof(ENetProtocolSendFragment), fragmentLength); - - if (startCommand->fragmentsRemaining <= 0) { - enet_peer_dispatch_incoming_unreliable_commands(peer, channel); - } - } - - return 0; - } /* enet_protocol_handle_send_unreliable_fragment */ - - static int enet_protocol_handle_ping(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) { - ENET_UNUSED(host) - ENET_UNUSED(command) - - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - return -1; - } - - return 0; - } - - static int enet_protocol_handle_bandwidth_limit(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) { - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - return -1; - } - if (peer->incomingBandwidth != 0) { - --host->bandwidthLimitedPeers; - } - - peer->incomingBandwidth = ENET_NET_TO_HOST_32(command->bandwidthLimit.incomingBandwidth); - if (peer->incomingBandwidth != 0) { - ++host->bandwidthLimitedPeers; - } - - peer->outgoingBandwidth = ENET_NET_TO_HOST_32(command->bandwidthLimit.outgoingBandwidth); - - if (peer->incomingBandwidth == 0 && host->outgoingBandwidth == 0) { - peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } else if (peer->incomingBandwidth == 0 || host->outgoingBandwidth == 0) { - peer->windowSize = (ENET_MAX(peer->incomingBandwidth, host->outgoingBandwidth) - / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else { - peer->windowSize = (ENET_MIN(peer->incomingBandwidth, host->outgoingBandwidth) - / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } - - if (peer->windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) { - peer->windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else if (peer->windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) { - peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } - - return 0; - } /* enet_protocol_handle_bandwidth_limit */ - - static int enet_protocol_handle_throttle_configure(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) { - ENET_UNUSED(host) - - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - return -1; - } - - peer->packetThrottleInterval = ENET_NET_TO_HOST_32(command->throttleConfigure.packetThrottleInterval); - peer->packetThrottleAcceleration = ENET_NET_TO_HOST_32(command->throttleConfigure.packetThrottleAcceleration); - peer->packetThrottleDeceleration = ENET_NET_TO_HOST_32(command->throttleConfigure.packetThrottleDeceleration); - - return 0; - } - - static int enet_protocol_handle_disconnect(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) { - if (peer->state == ENET_PEER_STATE_DISCONNECTED || peer->state == ENET_PEER_STATE_ZOMBIE || - peer->state == ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT - ) { - return 0; - } - - enet_peer_reset_queues(peer); - - if (peer->state == ENET_PEER_STATE_CONNECTION_SUCCEEDED || peer->state == ENET_PEER_STATE_DISCONNECTING || peer->state == ENET_PEER_STATE_CONNECTING) { - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - } - else if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - if (peer->state == ENET_PEER_STATE_CONNECTION_PENDING) { host->recalculateBandwidthLimits = 1; } - enet_peer_reset(peer); - } - else if (command->header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) { - enet_protocol_change_state(host, peer, ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT); - } - else { - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - } - - if (peer->state != ENET_PEER_STATE_DISCONNECTED) { - peer->eventData = ENET_NET_TO_HOST_32(command->disconnect.data); - } - - return 0; - } - - static int enet_protocol_handle_acknowledge(ENetHost *host, ENetEvent *event, ENetPeer *peer, const ENetProtocol *command) { - enet_uint32 roundTripTime, receivedSentTime, receivedReliableSequenceNumber; - ENetProtocolCommand commandNumber; - - if (peer->state == ENET_PEER_STATE_DISCONNECTED || peer->state == ENET_PEER_STATE_ZOMBIE) { - return 0; - } - - receivedSentTime = ENET_NET_TO_HOST_16(command->acknowledge.receivedSentTime); - receivedSentTime |= host->serviceTime & 0xFFFF0000; - if ((receivedSentTime & 0x8000) > (host->serviceTime & 0x8000)) { - receivedSentTime -= 0x10000; - } - - if (ENET_TIME_LESS(host->serviceTime, receivedSentTime)) { - return 0; - } - - peer->lastReceiveTime = host->serviceTime; - peer->earliestTimeout = 0; - roundTripTime = ENET_TIME_DIFFERENCE(host->serviceTime, receivedSentTime); - - enet_peer_throttle(peer, roundTripTime); - peer->roundTripTimeVariance -= peer->roundTripTimeVariance / 4; - - if (roundTripTime >= peer->roundTripTime) { - peer->roundTripTime += (roundTripTime - peer->roundTripTime) / 8; - peer->roundTripTimeVariance += (roundTripTime - peer->roundTripTime) / 4; - } else { - peer->roundTripTime -= (peer->roundTripTime - roundTripTime) / 8; - peer->roundTripTimeVariance += (peer->roundTripTime - roundTripTime) / 4; - } - - if (peer->roundTripTime < peer->lowestRoundTripTime) { - peer->lowestRoundTripTime = peer->roundTripTime; - } - - if (peer->roundTripTimeVariance > peer->highestRoundTripTimeVariance) { - peer->highestRoundTripTimeVariance = peer->roundTripTimeVariance; - } - - if (peer->packetThrottleEpoch == 0 || - ENET_TIME_DIFFERENCE(host->serviceTime, peer->packetThrottleEpoch) >= peer->packetThrottleInterval - ) { - peer->lastRoundTripTime = peer->lowestRoundTripTime; - peer->lastRoundTripTimeVariance = peer->highestRoundTripTimeVariance; - peer->lowestRoundTripTime = peer->roundTripTime; - peer->highestRoundTripTimeVariance = peer->roundTripTimeVariance; - peer->packetThrottleEpoch = host->serviceTime; - } - - receivedReliableSequenceNumber = ENET_NET_TO_HOST_16(command->acknowledge.receivedReliableSequenceNumber); - commandNumber = enet_protocol_remove_sent_reliable_command(peer, receivedReliableSequenceNumber, command->header.channelID); - - switch (peer->state) { - case ENET_PEER_STATE_ACKNOWLEDGING_CONNECT: - if (commandNumber != ENET_PROTOCOL_COMMAND_VERIFY_CONNECT) { - return -1; - } - - enet_protocol_notify_connect(host, peer, event); - break; - - case ENET_PEER_STATE_DISCONNECTING: - if (commandNumber != ENET_PROTOCOL_COMMAND_DISCONNECT) { - return -1; - } - - enet_protocol_notify_disconnect(host, peer, event); - break; - - case ENET_PEER_STATE_DISCONNECT_LATER: - if (enet_list_empty(&peer->outgoingReliableCommands) && - enet_list_empty(&peer->outgoingUnreliableCommands) && - enet_list_empty(&peer->sentReliableCommands)) - { - enet_peer_disconnect(peer, peer->eventData); - } - break; - - default: - break; - } - - return 0; - } /* enet_protocol_handle_acknowledge */ - - static int enet_protocol_handle_verify_connect(ENetHost *host, ENetEvent *event, ENetPeer *peer, const ENetProtocol *command) { - enet_uint32 mtu, windowSize; - size_t channelCount; - - if (peer->state != ENET_PEER_STATE_CONNECTING) { - return 0; - } - - channelCount = ENET_NET_TO_HOST_32(command->verifyConnect.channelCount); - - if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT || channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT || - ENET_NET_TO_HOST_32(command->verifyConnect.packetThrottleInterval) != peer->packetThrottleInterval || - ENET_NET_TO_HOST_32(command->verifyConnect.packetThrottleAcceleration) != peer->packetThrottleAcceleration || - ENET_NET_TO_HOST_32(command->verifyConnect.packetThrottleDeceleration) != peer->packetThrottleDeceleration || - command->verifyConnect.connectID != peer->connectID - ) { - peer->eventData = 0; - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - return -1; - } - - enet_protocol_remove_sent_reliable_command(peer, 1, 0xFF); - - if (channelCount < peer->channelCount) { - peer->channelCount = channelCount; - } - - peer->outgoingPeerID = ENET_NET_TO_HOST_16(command->verifyConnect.outgoingPeerID); - peer->incomingSessionID = command->verifyConnect.incomingSessionID; - peer->outgoingSessionID = command->verifyConnect.outgoingSessionID; - - mtu = ENET_NET_TO_HOST_32(command->verifyConnect.mtu); - - if (mtu < ENET_PROTOCOL_MINIMUM_MTU) { - mtu = ENET_PROTOCOL_MINIMUM_MTU; - } else if (mtu > ENET_PROTOCOL_MAXIMUM_MTU) { - mtu = ENET_PROTOCOL_MAXIMUM_MTU; - } - - if (mtu < peer->mtu) { - peer->mtu = mtu; - } - - windowSize = ENET_NET_TO_HOST_32(command->verifyConnect.windowSize); - if (windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) { - windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } - - if (windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) { - windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } - - if (windowSize < peer->windowSize) { - peer->windowSize = windowSize; - } - - peer->incomingBandwidth = ENET_NET_TO_HOST_32(command->verifyConnect.incomingBandwidth); - peer->outgoingBandwidth = ENET_NET_TO_HOST_32(command->verifyConnect.outgoingBandwidth); - - enet_protocol_notify_connect(host, peer, event); - return 0; - } /* enet_protocol_handle_verify_connect */ - - static int enet_protocol_handle_incoming_commands(ENetHost *host, ENetEvent *event) { - ENetProtocolHeader *header; - ENetProtocol *command; - ENetPeer *peer; - enet_uint8 *currentData; - size_t headerSize; - enet_uint16 peerID, flags; - enet_uint8 sessionID; - - if (host->receivedDataLength < (size_t) &((ENetProtocolHeader *) 0)->sentTime) { - return 0; - } - - header = (ENetProtocolHeader *) host->receivedData; - - peerID = ENET_NET_TO_HOST_16(header->peerID); - sessionID = (peerID & ENET_PROTOCOL_HEADER_SESSION_MASK) >> ENET_PROTOCOL_HEADER_SESSION_SHIFT; - flags = peerID & ENET_PROTOCOL_HEADER_FLAG_MASK; - peerID &= ~(ENET_PROTOCOL_HEADER_FLAG_MASK | ENET_PROTOCOL_HEADER_SESSION_MASK); - - headerSize = (flags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME ? sizeof(ENetProtocolHeader) : (size_t) &((ENetProtocolHeader *) 0)->sentTime); - if (host->checksum != NULL) { - headerSize += sizeof(enet_uint32); - } - - if (peerID == ENET_PROTOCOL_MAXIMUM_PEER_ID) { - peer = NULL; - } else if (peerID >= host->peerCount) { - return 0; - } else { - peer = &host->peers[peerID]; - - if (peer->state == ENET_PEER_STATE_DISCONNECTED || - peer->state == ENET_PEER_STATE_ZOMBIE || - ((!in6_equal(host->receivedAddress.host , peer->address.host) || - host->receivedAddress.port != peer->address.port) && - 1 /* no broadcast in ipv6 !in6_equal(peer->address.host , ENET_HOST_BROADCAST)*/) || - (peer->outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID && - sessionID != peer->incomingSessionID) - ) { - return 0; - } - } - - if (flags & ENET_PROTOCOL_HEADER_FLAG_COMPRESSED) { - size_t originalSize; - if (host->compressor.context == NULL || host->compressor.decompress == NULL) { - return 0; - } - - originalSize = host->compressor.decompress(host->compressor.context, - host->receivedData + headerSize, - host->receivedDataLength - headerSize, - host->packetData[1] + headerSize, - sizeof(host->packetData[1]) - headerSize - ); - - if (originalSize <= 0 || originalSize > sizeof(host->packetData[1]) - headerSize) { - return 0; - } - - memcpy(host->packetData[1], header, headerSize); - host->receivedData = host->packetData[1]; - host->receivedDataLength = headerSize + originalSize; - } - - if (host->checksum != NULL) { - enet_uint32 *checksum = (enet_uint32 *) &host->receivedData[headerSize - sizeof(enet_uint32)]; - enet_uint32 desiredChecksum = *checksum; - ENetBuffer buffer; - - *checksum = peer != NULL ? peer->connectID : 0; - - buffer.data = host->receivedData; - buffer.dataLength = host->receivedDataLength; - - if (host->checksum(&buffer, 1) != desiredChecksum) { - return 0; - } - } - - if (peer != NULL) { - peer->address.host = host->receivedAddress.host; - peer->address.port = host->receivedAddress.port; - peer->incomingDataTotal += host->receivedDataLength; - peer->totalDataReceived += host->receivedDataLength; - } - - currentData = host->receivedData + headerSize; - - while (currentData < &host->receivedData[host->receivedDataLength]) { - enet_uint8 commandNumber; - size_t commandSize; - - command = (ENetProtocol *) currentData; - - if (currentData + sizeof(ENetProtocolCommandHeader) > &host->receivedData[host->receivedDataLength]) { - break; - } - - commandNumber = command->header.command & ENET_PROTOCOL_COMMAND_MASK; - if (commandNumber >= ENET_PROTOCOL_COMMAND_COUNT) { - break; - } - - commandSize = commandSizes[commandNumber]; - if (commandSize == 0 || currentData + commandSize > &host->receivedData[host->receivedDataLength]) { - break; - } - - currentData += commandSize; - - if (peer == NULL && (commandNumber != ENET_PROTOCOL_COMMAND_CONNECT || currentData < &host->receivedData[host->receivedDataLength])) { - break; - } - - command->header.reliableSequenceNumber = ENET_NET_TO_HOST_16(command->header.reliableSequenceNumber); - - switch (commandNumber) { - case ENET_PROTOCOL_COMMAND_ACKNOWLEDGE: - if (enet_protocol_handle_acknowledge(host, event, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_CONNECT: - if (peer != NULL) { - goto commandError; - } - peer = enet_protocol_handle_connect(host, header, command); - if (peer == NULL) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_VERIFY_CONNECT: - if (enet_protocol_handle_verify_connect(host, event, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_DISCONNECT: - if (enet_protocol_handle_disconnect(host, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_PING: - if (enet_protocol_handle_ping(host, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_RELIABLE: - if (enet_protocol_handle_send_reliable(host, peer, command, ¤tData)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE: - if (enet_protocol_handle_send_unreliable(host, peer, command, ¤tData)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED: - if (enet_protocol_handle_send_unsequenced(host, peer, command, ¤tData)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT: - if (enet_protocol_handle_send_fragment(host, peer, command, ¤tData)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_BANDWIDTH_LIMIT: - if (enet_protocol_handle_bandwidth_limit(host, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_THROTTLE_CONFIGURE: - if (enet_protocol_handle_throttle_configure(host, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT: - if (enet_protocol_handle_send_unreliable_fragment(host, peer, command, ¤tData)) { - goto commandError; - } - break; - - default: - goto commandError; - } - - assert(peer); - if ((command->header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) != 0) { - enet_uint16 sentTime; - - if (!(flags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME)) { - break; - } - - sentTime = ENET_NET_TO_HOST_16(header->sentTime); - - switch (peer->state) { - case ENET_PEER_STATE_DISCONNECTING: - case ENET_PEER_STATE_ACKNOWLEDGING_CONNECT: - case ENET_PEER_STATE_DISCONNECTED: - case ENET_PEER_STATE_ZOMBIE: - break; - - case ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT: - if ((command->header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_DISCONNECT) { - enet_peer_queue_acknowledgement(peer, command, sentTime); - } - break; - - default: - enet_peer_queue_acknowledgement(peer, command, sentTime); - break; - } - } - } - - commandError: - if (event != NULL && event->type != ENET_EVENT_TYPE_NONE) { - return 1; - } - - return 0; - } /* enet_protocol_handle_incoming_commands */ - - static int enet_protocol_receive_incoming_commands(ENetHost *host, ENetEvent *event) { - int packets; - - for (packets = 0; packets < 256; ++packets) { - int receivedLength; - ENetBuffer buffer; - - buffer.data = host->packetData[0]; - // buffer.dataLength = sizeof (host->packetData[0]); - buffer.dataLength = host->mtu; - - receivedLength = enet_socket_receive(host->socket, &host->receivedAddress, &buffer, 1); - - if (receivedLength == -2) - continue; - - if (receivedLength < 0) { - return -1; - } - - if (receivedLength == 0) { - return 0; - } - - host->receivedData = host->packetData[0]; - host->receivedDataLength = receivedLength; - - host->totalReceivedData += receivedLength; - host->totalReceivedPackets++; - - if (host->intercept != NULL) { - switch (host->intercept(host, (void *)event)) { - case 1: - if (event != NULL && event->type != ENET_EVENT_TYPE_NONE) { - return 1; - } - - continue; - - case -1: - return -1; - - default: - break; - } - } - - switch (enet_protocol_handle_incoming_commands(host, event)) { - case 1: - return 1; - - case -1: - return -1; - - default: - break; - } - } - - return -1; - } /* enet_protocol_receive_incoming_commands */ - - static void enet_protocol_send_acknowledgements(ENetHost *host, ENetPeer *peer) { - ENetProtocol *command = &host->commands[host->commandCount]; - ENetBuffer *buffer = &host->buffers[host->bufferCount]; - ENetAcknowledgement *acknowledgement; - ENetListIterator currentAcknowledgement; - enet_uint16 reliableSequenceNumber; - - currentAcknowledgement = enet_list_begin(&peer->acknowledgements); - - while (currentAcknowledgement != enet_list_end(&peer->acknowledgements)) { - if (command >= &host->commands[sizeof(host->commands) / sizeof(ENetProtocol)] || - buffer >= &host->buffers[sizeof(host->buffers) / sizeof(ENetBuffer)] || - peer->mtu - host->packetSize < sizeof(ENetProtocolAcknowledge) - ) { - host->continueSending = 1; - break; - } - - acknowledgement = (ENetAcknowledgement *) currentAcknowledgement; - currentAcknowledgement = enet_list_next(currentAcknowledgement); - - buffer->data = command; - buffer->dataLength = sizeof(ENetProtocolAcknowledge); - host->packetSize += buffer->dataLength; - - reliableSequenceNumber = ENET_HOST_TO_NET_16(acknowledgement->command.header.reliableSequenceNumber); - - command->header.command = ENET_PROTOCOL_COMMAND_ACKNOWLEDGE; - command->header.channelID = acknowledgement->command.header.channelID; - command->header.reliableSequenceNumber = reliableSequenceNumber; - command->acknowledge.receivedReliableSequenceNumber = reliableSequenceNumber; - command->acknowledge.receivedSentTime = ENET_HOST_TO_NET_16(acknowledgement->sentTime); - - if ((acknowledgement->command.header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_DISCONNECT) { - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - } - - enet_list_remove(&acknowledgement->acknowledgementList); - enet_free(acknowledgement); - - ++command; - ++buffer; - } - - host->commandCount = command - host->commands; - host->bufferCount = buffer - host->buffers; - } /* enet_protocol_send_acknowledgements */ - - static void enet_protocol_send_unreliable_outgoing_commands(ENetHost *host, ENetPeer *peer) { - ENetProtocol *command = &host->commands[host->commandCount]; - ENetBuffer *buffer = &host->buffers[host->bufferCount]; - ENetOutgoingCommand *outgoingCommand; - ENetListIterator currentCommand; - - currentCommand = enet_list_begin(&peer->outgoingUnreliableCommands); - while (currentCommand != enet_list_end(&peer->outgoingUnreliableCommands)) { - size_t commandSize; - - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - commandSize = commandSizes[outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK]; - - if (command >= &host->commands[sizeof(host->commands) / sizeof(ENetProtocol)] || - buffer + 1 >= &host->buffers[sizeof(host->buffers) / sizeof(ENetBuffer)] || - peer->mtu - host->packetSize < commandSize || - (outgoingCommand->packet != NULL && - peer->mtu - host->packetSize < commandSize + outgoingCommand->fragmentLength) - ) { - host->continueSending = 1; - break; - } - - currentCommand = enet_list_next(currentCommand); - - if (outgoingCommand->packet != NULL && outgoingCommand->fragmentOffset == 0) { - peer->packetThrottleCounter += ENET_PEER_PACKET_THROTTLE_COUNTER; - peer->packetThrottleCounter %= ENET_PEER_PACKET_THROTTLE_SCALE; - - if (peer->packetThrottleCounter > peer->packetThrottle) { - enet_uint16 reliableSequenceNumber = outgoingCommand->reliableSequenceNumber; - enet_uint16 unreliableSequenceNumber = outgoingCommand->unreliableSequenceNumber; - for (;;) { - --outgoingCommand->packet->referenceCount; - - if (outgoingCommand->packet->referenceCount == 0) { - callbacks.packet_destroy(outgoingCommand->packet); - } - - enet_list_remove(&outgoingCommand->outgoingCommandList); - enet_free(outgoingCommand); - - if (currentCommand == enet_list_end(&peer->outgoingUnreliableCommands)) { - break; - } - - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - if (outgoingCommand->reliableSequenceNumber != reliableSequenceNumber || outgoingCommand->unreliableSequenceNumber != unreliableSequenceNumber) { - break; - } - - currentCommand = enet_list_next(currentCommand); - } - - continue; - } - } - - buffer->data = command; - buffer->dataLength = commandSize; - host->packetSize += buffer->dataLength; - *command = outgoingCommand->command; - enet_list_remove(&outgoingCommand->outgoingCommandList); - - if (outgoingCommand->packet != NULL) { - ++buffer; - - buffer->data = outgoingCommand->packet->data + outgoingCommand->fragmentOffset; - buffer->dataLength = outgoingCommand->fragmentLength; - - host->packetSize += buffer->dataLength; - - enet_list_insert(enet_list_end(&peer->sentUnreliableCommands), outgoingCommand); - } else { - enet_free(outgoingCommand); - } - - ++command; - ++buffer; - } - - host->commandCount = command - host->commands; - host->bufferCount = buffer - host->buffers; - - if (peer->state == ENET_PEER_STATE_DISCONNECT_LATER && - enet_list_empty(&peer->outgoingReliableCommands) && - enet_list_empty(&peer->outgoingUnreliableCommands) && - enet_list_empty(&peer->sentReliableCommands)) - { - enet_peer_disconnect(peer, peer->eventData); - } - } /* enet_protocol_send_unreliable_outgoing_commands */ - - static int enet_protocol_check_timeouts(ENetHost *host, ENetPeer *peer, ENetEvent *event) { - ENetOutgoingCommand *outgoingCommand; - ENetListIterator currentCommand, insertPosition; - - currentCommand = enet_list_begin(&peer->sentReliableCommands); - insertPosition = enet_list_begin(&peer->outgoingReliableCommands); - - while (currentCommand != enet_list_end(&peer->sentReliableCommands)) { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - currentCommand = enet_list_next(currentCommand); - - if (ENET_TIME_DIFFERENCE(host->serviceTime, outgoingCommand->sentTime) < outgoingCommand->roundTripTimeout) { - continue; - } - - if (peer->earliestTimeout == 0 || ENET_TIME_LESS(outgoingCommand->sentTime, peer->earliestTimeout)) { - peer->earliestTimeout = outgoingCommand->sentTime; - } - - if (peer->earliestTimeout != 0 && - (ENET_TIME_DIFFERENCE(host->serviceTime, peer->earliestTimeout) >= peer->timeoutMaximum || - (outgoingCommand->roundTripTimeout >= outgoingCommand->roundTripTimeoutLimit && - ENET_TIME_DIFFERENCE(host->serviceTime, peer->earliestTimeout) >= peer->timeoutMinimum)) - ) { - enet_protocol_notify_disconnect_timeout(host, peer, event); - return 1; - } - - if (outgoingCommand->packet != NULL) { - peer->reliableDataInTransit -= outgoingCommand->fragmentLength; - } - - ++peer->packetsLost; - ++peer->totalPacketsLost; - - /* Replaced exponential backoff time with something more linear */ - /* Source: http://lists.cubik.org/pipermail/enet-discuss/2014-May/002308.html */ - outgoingCommand->roundTripTimeout = peer->roundTripTime + 4 * peer->roundTripTimeVariance; - outgoingCommand->roundTripTimeoutLimit = peer->timeoutLimit * outgoingCommand->roundTripTimeout; - - enet_list_insert(insertPosition, enet_list_remove(&outgoingCommand->outgoingCommandList)); - - if (currentCommand == enet_list_begin(&peer->sentReliableCommands) && !enet_list_empty(&peer->sentReliableCommands)) { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - peer->nextTimeout = outgoingCommand->sentTime + outgoingCommand->roundTripTimeout; - } - } - - return 0; - } /* enet_protocol_check_timeouts */ - - static int enet_protocol_send_reliable_outgoing_commands(ENetHost *host, ENetPeer *peer) { - ENetProtocol *command = &host->commands[host->commandCount]; - ENetBuffer *buffer = &host->buffers[host->bufferCount]; - ENetOutgoingCommand *outgoingCommand; - ENetListIterator currentCommand; - ENetChannel *channel; - enet_uint16 reliableWindow; - size_t commandSize; - int windowExceeded = 0, windowWrap = 0, canPing = 1; - - currentCommand = enet_list_begin(&peer->outgoingReliableCommands); - - while (currentCommand != enet_list_end(&peer->outgoingReliableCommands)) { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - channel = outgoingCommand->command.header.channelID < peer->channelCount ? &peer->channels[outgoingCommand->command.header.channelID] : NULL; - reliableWindow = outgoingCommand->reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - if (channel != NULL) { - if (!windowWrap && - outgoingCommand->sendAttempts < 1 && - !(outgoingCommand->reliableSequenceNumber % ENET_PEER_RELIABLE_WINDOW_SIZE) && - (channel->reliableWindows[(reliableWindow + ENET_PEER_RELIABLE_WINDOWS - 1) - % ENET_PEER_RELIABLE_WINDOWS] >= ENET_PEER_RELIABLE_WINDOW_SIZE || - channel->usedReliableWindows & ((((1 << ENET_PEER_FREE_RELIABLE_WINDOWS) - 1) << reliableWindow) - | (((1 << ENET_PEER_FREE_RELIABLE_WINDOWS) - 1) >> (ENET_PEER_RELIABLE_WINDOWS - reliableWindow)))) - ) { - windowWrap = 1; - } - - if (windowWrap) { - currentCommand = enet_list_next(currentCommand); - continue; - } - } - - if (outgoingCommand->packet != NULL) { - if (!windowExceeded) { - enet_uint32 windowSize = (peer->packetThrottle * peer->windowSize) / ENET_PEER_PACKET_THROTTLE_SCALE; - - if (peer->reliableDataInTransit + outgoingCommand->fragmentLength > ENET_MAX(windowSize, peer->mtu)) { - windowExceeded = 1; - } - } - if (windowExceeded) { - currentCommand = enet_list_next(currentCommand); - - continue; - } - } - - canPing = 0; - - commandSize = commandSizes[outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK]; - if (command >= &host->commands[sizeof(host->commands) / sizeof(ENetProtocol)] || - buffer + 1 >= &host->buffers[sizeof(host->buffers) / sizeof(ENetBuffer)] || - peer->mtu - host->packetSize < commandSize || - (outgoingCommand->packet != NULL && - (enet_uint16) (peer->mtu - host->packetSize) < (enet_uint16) (commandSize + outgoingCommand->fragmentLength)) - ) { - host->continueSending = 1; - break; - } - - currentCommand = enet_list_next(currentCommand); - - if (channel != NULL && outgoingCommand->sendAttempts < 1) { - channel->usedReliableWindows |= 1 << reliableWindow; - ++channel->reliableWindows[reliableWindow]; - } - - ++outgoingCommand->sendAttempts; - - if (outgoingCommand->roundTripTimeout == 0) { - outgoingCommand->roundTripTimeout = peer->roundTripTime + 4 * peer->roundTripTimeVariance; - outgoingCommand->roundTripTimeoutLimit = peer->timeoutLimit * outgoingCommand->roundTripTimeout; - } - - if (enet_list_empty(&peer->sentReliableCommands)) { - peer->nextTimeout = host->serviceTime + outgoingCommand->roundTripTimeout; - } - - enet_list_insert(enet_list_end(&peer->sentReliableCommands), enet_list_remove(&outgoingCommand->outgoingCommandList)); - - outgoingCommand->sentTime = host->serviceTime; - - buffer->data = command; - buffer->dataLength = commandSize; - - host->packetSize += buffer->dataLength; - host->headerFlags |= ENET_PROTOCOL_HEADER_FLAG_SENT_TIME; - - *command = outgoingCommand->command; - - if (outgoingCommand->packet != NULL) { - ++buffer; - buffer->data = outgoingCommand->packet->data + outgoingCommand->fragmentOffset; - buffer->dataLength = outgoingCommand->fragmentLength; - host->packetSize += outgoingCommand->fragmentLength; - peer->reliableDataInTransit += outgoingCommand->fragmentLength; - } - - ++peer->packetsSent; - ++peer->totalPacketsSent; - - ++command; - ++buffer; - } - - host->commandCount = command - host->commands; - host->bufferCount = buffer - host->buffers; - - return canPing; - } /* enet_protocol_send_reliable_outgoing_commands */ - - static int enet_protocol_send_outgoing_commands(ENetHost *host, ENetEvent *event, int checkForTimeouts) { - enet_uint8 headerData[sizeof(ENetProtocolHeader) + sizeof(enet_uint32)]; - ENetProtocolHeader *header = (ENetProtocolHeader *) headerData; - ENetPeer *currentPeer; - int sentLength; - size_t shouldCompress = 0; - host->continueSending = 1; - - while (host->continueSending) - for (host->continueSending = 0, currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - if (currentPeer->state == ENET_PEER_STATE_DISCONNECTED || currentPeer->state == ENET_PEER_STATE_ZOMBIE) { - continue; - } - - host->headerFlags = 0; - host->commandCount = 0; - host->bufferCount = 1; - host->packetSize = sizeof(ENetProtocolHeader); - - if (!enet_list_empty(¤tPeer->acknowledgements)) { - enet_protocol_send_acknowledgements(host, currentPeer); - } - - if (checkForTimeouts != 0 && - !enet_list_empty(¤tPeer->sentReliableCommands) && - ENET_TIME_GREATER_EQUAL(host->serviceTime, currentPeer->nextTimeout) && - enet_protocol_check_timeouts(host, currentPeer, event) == 1 - ) { - if (event != NULL && event->type != ENET_EVENT_TYPE_NONE) { - return 1; - } else { - continue; - } - } - - if ((enet_list_empty(¤tPeer->outgoingReliableCommands) || - enet_protocol_send_reliable_outgoing_commands(host, currentPeer)) && - enet_list_empty(¤tPeer->sentReliableCommands) && - ENET_TIME_DIFFERENCE(host->serviceTime, currentPeer->lastReceiveTime) >= currentPeer->pingInterval && - currentPeer->mtu - host->packetSize >= sizeof(ENetProtocolPing) - ) { - enet_peer_ping(currentPeer); - enet_protocol_send_reliable_outgoing_commands(host, currentPeer); - } - - if (!enet_list_empty(¤tPeer->outgoingUnreliableCommands)) { - enet_protocol_send_unreliable_outgoing_commands(host, currentPeer); - } - - if (host->commandCount == 0) { - continue; - } - - if (currentPeer->packetLossEpoch == 0) { - currentPeer->packetLossEpoch = host->serviceTime; - } else if (ENET_TIME_DIFFERENCE(host->serviceTime, currentPeer->packetLossEpoch) >= ENET_PEER_PACKET_LOSS_INTERVAL && currentPeer->packetsSent > 0) { - enet_uint32 packetLoss = currentPeer->packetsLost * ENET_PEER_PACKET_LOSS_SCALE / currentPeer->packetsSent; - - #ifdef ENET_DEBUG - printf( - "peer %u: %f%%+-%f%% packet loss, %u+-%u ms round trip time, %f%% throttle, %u/%u outgoing, %u/%u incoming\n", currentPeer->incomingPeerID, - currentPeer->packetLoss / (float) ENET_PEER_PACKET_LOSS_SCALE, - currentPeer->packetLossVariance / (float) ENET_PEER_PACKET_LOSS_SCALE, currentPeer->roundTripTime, currentPeer->roundTripTimeVariance, - currentPeer->packetThrottle / (float) ENET_PEER_PACKET_THROTTLE_SCALE, - enet_list_size(¤tPeer->outgoingReliableCommands), - enet_list_size(¤tPeer->outgoingUnreliableCommands), - currentPeer->channels != NULL ? enet_list_size( ¤tPeer->channels->incomingReliableCommands) : 0, - currentPeer->channels != NULL ? enet_list_size(¤tPeer->channels->incomingUnreliableCommands) : 0 - ); - #endif - - currentPeer->packetLossVariance -= currentPeer->packetLossVariance / 4; - - if (packetLoss >= currentPeer->packetLoss) { - currentPeer->packetLoss += (packetLoss - currentPeer->packetLoss) / 8; - currentPeer->packetLossVariance += (packetLoss - currentPeer->packetLoss) / 4; - } else { - currentPeer->packetLoss -= (currentPeer->packetLoss - packetLoss) / 8; - currentPeer->packetLossVariance += (currentPeer->packetLoss - packetLoss) / 4; - } - - currentPeer->packetLossEpoch = host->serviceTime; - currentPeer->packetsSent = 0; - currentPeer->packetsLost = 0; - } - - host->buffers[0].data = headerData; - if (host->headerFlags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME) { - header->sentTime = ENET_HOST_TO_NET_16(host->serviceTime & 0xFFFF); - host->buffers[0].dataLength = sizeof(ENetProtocolHeader); - } else { - host->buffers[0].dataLength = (size_t) &((ENetProtocolHeader *) 0)->sentTime; - } - - shouldCompress = 0; - if (host->compressor.context != NULL && host->compressor.compress != NULL) { - size_t originalSize = host->packetSize - sizeof(ENetProtocolHeader), - compressedSize = host->compressor.compress(host->compressor.context, &host->buffers[1], host->bufferCount - 1, originalSize, host->packetData[1], originalSize); - if (compressedSize > 0 && compressedSize < originalSize) { - host->headerFlags |= ENET_PROTOCOL_HEADER_FLAG_COMPRESSED; - shouldCompress = compressedSize; - #ifdef ENET_DEBUG_COMPRESS - printf("peer %u: compressed %u->%u (%u%%)\n", currentPeer->incomingPeerID, originalSize, compressedSize, (compressedSize * 100) / originalSize); - #endif - } - } - - if (currentPeer->outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID) { - host->headerFlags |= currentPeer->outgoingSessionID << ENET_PROTOCOL_HEADER_SESSION_SHIFT; - } - header->peerID = ENET_HOST_TO_NET_16(currentPeer->outgoingPeerID | host->headerFlags); - if (host->checksum != NULL) { - enet_uint32 *checksum = (enet_uint32 *) &headerData[host->buffers[0].dataLength]; - *checksum = currentPeer->outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID ? currentPeer->connectID : 0; - host->buffers[0].dataLength += sizeof(enet_uint32); - *checksum = host->checksum(host->buffers, host->bufferCount); - } - - if (shouldCompress > 0) { - host->buffers[1].data = host->packetData[1]; - host->buffers[1].dataLength = shouldCompress; - host->bufferCount = 2; - } - - currentPeer->lastSendTime = host->serviceTime; - sentLength = enet_socket_send(host->socket, ¤tPeer->address, host->buffers, host->bufferCount); - enet_protocol_remove_sent_unreliable_commands(currentPeer); - - if (sentLength < 0) { - // The local 'headerData' array (to which 'data' is assigned) goes out - // of scope on return from this function, so ensure we no longer point to it. - host->buffers[0].data = NULL; - return -1; - } - - host->totalSentData += sentLength; - currentPeer->totalDataSent += sentLength; - host->totalSentPackets++; - } - - // The local 'headerData' array (to which 'data' is assigned) goes out - // of scope on return from this function, so ensure we no longer point to it. - host->buffers[0].data = NULL; - - return 0; - } /* enet_protocol_send_outgoing_commands */ - - /** Sends any queued packets on the host specified to its designated peers. - * - * @param host host to flush - * @remarks this function need only be used in circumstances where one wishes to send queued packets earlier than in a call to enet_host_service(). - * @ingroup host - */ - void enet_host_flush(ENetHost *host) { - host->serviceTime = enet_time_get(); - enet_protocol_send_outgoing_commands(host, NULL, 0); - } - - /** Checks for any queued events on the host and dispatches one if available. - * - * @param host host to check for events - * @param event an event structure where event details will be placed if available - * @retval > 0 if an event was dispatched - * @retval 0 if no events are available - * @retval < 0 on failure - * @ingroup host - */ - int enet_host_check_events(ENetHost *host, ENetEvent *event) { - if (event == NULL) { return -1; } - - event->type = ENET_EVENT_TYPE_NONE; - event->peer = NULL; - event->packet = NULL; - - return enet_protocol_dispatch_incoming_commands(host, event); - } - - /** Waits for events on the host specified and shuttles packets between - * the host and its peers. - * - * @param host host to service - * @param event an event structure where event details will be placed if one occurs - * if event == NULL then no events will be delivered - * @param timeout number of milliseconds that ENet should wait for events - * @retval > 0 if an event occurred within the specified time limit - * @retval 0 if no event occurred - * @retval < 0 on failure - * @remarks enet_host_service should be called fairly regularly for adequate performance - * @ingroup host - */ - int enet_host_service(ENetHost *host, ENetEvent *event, enet_uint32 timeout) { - enet_uint32 waitCondition; - - if (event != NULL) { - event->type = ENET_EVENT_TYPE_NONE; - event->peer = NULL; - event->packet = NULL; - - switch (enet_protocol_dispatch_incoming_commands(host, event)) { - case 1: - return 1; - - case -1: - #ifdef ENET_DEBUG - perror("Error dispatching incoming packets"); - #endif - - return -1; - - default: - break; - } - } - - host->serviceTime = enet_time_get(); - timeout += host->serviceTime; - - do { - if (ENET_TIME_DIFFERENCE(host->serviceTime, host->bandwidthThrottleEpoch) >= ENET_HOST_BANDWIDTH_THROTTLE_INTERVAL) { - enet_host_bandwidth_throttle(host); - } - - switch (enet_protocol_send_outgoing_commands(host, event, 1)) { - case 1: - return 1; - - case -1: - #ifdef ENET_DEBUG - perror("Error sending outgoing packets"); - #endif - - return -1; - - default: - break; - } - - switch (enet_protocol_receive_incoming_commands(host, event)) { - case 1: - return 1; - - case -1: - #ifdef ENET_DEBUG - perror("Error receiving incoming packets"); - #endif - - return -1; - - default: - break; - } - - switch (enet_protocol_send_outgoing_commands(host, event, 1)) { - case 1: - return 1; - - case -1: - #ifdef ENET_DEBUG - perror("Error sending outgoing packets"); - #endif - - return -1; - - default: - break; - } - - if (event != NULL) { - switch (enet_protocol_dispatch_incoming_commands(host, event)) { - case 1: - return 1; - - case -1: - #ifdef ENET_DEBUG - perror("Error dispatching incoming packets"); - #endif - - return -1; - - default: - break; - } - } - - if (ENET_TIME_GREATER_EQUAL(host->serviceTime, timeout)) { - return 0; - } - - do { - host->serviceTime = enet_time_get(); - - if (ENET_TIME_GREATER_EQUAL(host->serviceTime, timeout)) { - return 0; - } - - waitCondition = ENET_SOCKET_WAIT_RECEIVE | ENET_SOCKET_WAIT_INTERRUPT; - if (enet_socket_wait(host->socket, &waitCondition, ENET_TIME_DIFFERENCE(timeout, host->serviceTime)) != 0) { - return -1; - } - } while (waitCondition & ENET_SOCKET_WAIT_INTERRUPT); - - host->serviceTime = enet_time_get(); - } while (waitCondition & ENET_SOCKET_WAIT_RECEIVE); - - return 0; - } /* enet_host_service */ - - -// =======================================================================// -// ! -// ! Peer -// ! -// =======================================================================// - - /** Configures throttle parameter for a peer. - * - * Unreliable packets are dropped by ENet in response to the varying conditions - * of the Internet connection to the peer. The throttle represents a probability - * that an unreliable packet should not be dropped and thus sent by ENet to the peer. - * The lowest mean round trip time from the sending of a reliable packet to the - * receipt of its acknowledgement is measured over an amount of time specified by - * the interval parameter in milliseconds. If a measured round trip time happens to - * be significantly less than the mean round trip time measured over the interval, - * then the throttle probability is increased to allow more traffic by an amount - * specified in the acceleration parameter, which is a ratio to the ENET_PEER_PACKET_THROTTLE_SCALE - * constant. If a measured round trip time happens to be significantly greater than - * the mean round trip time measured over the interval, then the throttle probability - * is decreased to limit traffic by an amount specified in the deceleration parameter, which - * is a ratio to the ENET_PEER_PACKET_THROTTLE_SCALE constant. When the throttle has - * a value of ENET_PEER_PACKET_THROTTLE_SCALE, no unreliable packets are dropped by - * ENet, and so 100% of all unreliable packets will be sent. When the throttle has a - * value of 0, all unreliable packets are dropped by ENet, and so 0% of all unreliable - * packets will be sent. Intermediate values for the throttle represent intermediate - * probabilities between 0% and 100% of unreliable packets being sent. The bandwidth - * limits of the local and foreign hosts are taken into account to determine a - * sensible limit for the throttle probability above which it should not raise even in - * the best of conditions. - * - * @param peer peer to configure - * @param interval interval, in milliseconds, over which to measure lowest mean RTT; the default value is ENET_PEER_PACKET_THROTTLE_INTERVAL. - * @param acceleration rate at which to increase the throttle probability as mean RTT declines - * @param deceleration rate at which to decrease the throttle probability as mean RTT increases - */ - void enet_peer_throttle_configure(ENetPeer *peer, enet_uint32 interval, enet_uint32 acceleration, enet_uint32 deceleration) { - ENetProtocol command; - - peer->packetThrottleInterval = interval; - peer->packetThrottleAcceleration = acceleration; - peer->packetThrottleDeceleration = deceleration; - - command.header.command = ENET_PROTOCOL_COMMAND_THROTTLE_CONFIGURE | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - - command.throttleConfigure.packetThrottleInterval = ENET_HOST_TO_NET_32(interval); - command.throttleConfigure.packetThrottleAcceleration = ENET_HOST_TO_NET_32(acceleration); - command.throttleConfigure.packetThrottleDeceleration = ENET_HOST_TO_NET_32(deceleration); - - enet_peer_queue_outgoing_command(peer, &command, NULL, 0, 0); - } - - int enet_peer_throttle(ENetPeer *peer, enet_uint32 rtt) { - if (peer->lastRoundTripTime <= peer->lastRoundTripTimeVariance) { - peer->packetThrottle = peer->packetThrottleLimit; - } - else if (rtt < peer->lastRoundTripTime) { - peer->packetThrottle += peer->packetThrottleAcceleration; - - if (peer->packetThrottle > peer->packetThrottleLimit) { - peer->packetThrottle = peer->packetThrottleLimit; - } - - return 1; - } - else if (rtt > peer->lastRoundTripTime + 2 * peer->lastRoundTripTimeVariance) { - if (peer->packetThrottle > peer->packetThrottleDeceleration) { - peer->packetThrottle -= peer->packetThrottleDeceleration; - } else { - peer->packetThrottle = 0; - } - - return -1; - } - - return 0; - } - - /* Extended functionality for easier binding in other programming languages */ - enet_uint32 enet_host_get_peers_count(ENetHost *host) { - return host->connectedPeers; - } - - enet_uint32 enet_host_get_packets_sent(ENetHost *host) { - return host->totalSentPackets; - } - - enet_uint32 enet_host_get_packets_received(ENetHost *host) { - return host->totalReceivedPackets; - } - - enet_uint32 enet_host_get_bytes_sent(ENetHost *host) { - return host->totalSentData; - } - - enet_uint32 enet_host_get_bytes_received(ENetHost *host) { - return host->totalReceivedData; - } - - /** Gets received data buffer. Returns buffer length. - * @param host host to access recevie buffer - * @param data ouput parameter for recevied data - * @retval buffer length - */ - enet_uint32 enet_host_get_received_data(ENetHost *host, /*out*/ enet_uint8** data) { - *data = host->receivedData; - return host->receivedDataLength; - } - - enet_uint32 enet_host_get_mtu(ENetHost *host) { - return host->mtu; - } - - enet_uint32 enet_peer_get_id(ENetPeer *peer) { - return peer->connectID; - } - - enet_uint32 enet_peer_get_ip(ENetPeer *peer, char *ip, size_t ipLength) { - return enet_address_get_host_ip(&peer->address, ip, ipLength); - } - - enet_uint16 enet_peer_get_port(ENetPeer *peer) { - return peer->address.port; - } - - ENetPeerState enet_peer_get_state(ENetPeer *peer) { - return peer->state; - } - - enet_uint32 enet_peer_get_rtt(ENetPeer *peer) { - return peer->roundTripTime; - } - - enet_uint64 enet_peer_get_packets_sent(ENetPeer *peer) { - return peer->totalPacketsSent; - } - - enet_uint32 enet_peer_get_packets_lost(ENetPeer *peer) { - return peer->totalPacketsLost; - } - - enet_uint64 enet_peer_get_bytes_sent(ENetPeer *peer) { - return peer->totalDataSent; - } - - enet_uint64 enet_peer_get_bytes_received(ENetPeer *peer) { - return peer->totalDataReceived; - } - - void * enet_peer_get_data(ENetPeer *peer) { - return (void *) peer->data; - } - - void enet_peer_set_data(ENetPeer *peer, const void *data) { - peer->data = (enet_uint32 *) data; - } - - void * enet_packet_get_data(ENetPacket *packet) { - return (void *) packet->data; - } - - enet_uint32 enet_packet_get_length(ENetPacket *packet) { - return packet->dataLength; - } - - void enet_packet_set_free_callback(ENetPacket *packet, void *callback) { - packet->freeCallback = (ENetPacketFreeCallback)callback; - } - - /** Queues a packet to be sent. - * @param peer destination for the packet - * @param channelID channel on which to send - * @param packet packet to send - * @retval 0 on success - * @retval < 0 on failure - */ - int enet_peer_send(ENetPeer *peer, enet_uint8 channelID, ENetPacket *packet) { - ENetChannel *channel = &peer->channels[channelID]; - ENetProtocol command; - size_t fragmentLength; - - if (peer->state != ENET_PEER_STATE_CONNECTED || channelID >= peer->channelCount || packet->dataLength > peer->host->maximumPacketSize) { - return -1; - } - - fragmentLength = peer->mtu - sizeof(ENetProtocolHeader) - sizeof(ENetProtocolSendFragment); - if (peer->host->checksum != NULL) { - fragmentLength -= sizeof(enet_uint32); - } - - if (packet->dataLength > fragmentLength) { - enet_uint32 fragmentCount = (packet->dataLength + fragmentLength - 1) / fragmentLength, fragmentNumber, fragmentOffset; - enet_uint8 commandNumber; - enet_uint16 startSequenceNumber; - ENetList fragments; - ENetOutgoingCommand *fragment; - - if (fragmentCount > ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT) { - return -1; - } - - if ((packet->flags & (ENET_PACKET_FLAG_RELIABLE | ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT)) == - ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT && - channel->outgoingUnreliableSequenceNumber < 0xFFFF) - { - commandNumber = ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT; - startSequenceNumber = ENET_HOST_TO_NET_16(channel->outgoingUnreliableSequenceNumber + 1); - } else { - commandNumber = ENET_PROTOCOL_COMMAND_SEND_FRAGMENT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - startSequenceNumber = ENET_HOST_TO_NET_16(channel->outgoingReliableSequenceNumber + 1); - } - - enet_list_clear(&fragments); - - for (fragmentNumber = 0, fragmentOffset = 0; fragmentOffset < packet->dataLength; ++fragmentNumber, fragmentOffset += fragmentLength) { - if (packet->dataLength - fragmentOffset < fragmentLength) { - fragmentLength = packet->dataLength - fragmentOffset; - } - - fragment = (ENetOutgoingCommand *) enet_malloc(sizeof(ENetOutgoingCommand)); - - if (fragment == NULL) { - while (!enet_list_empty(&fragments)) { - fragment = (ENetOutgoingCommand *) enet_list_remove(enet_list_begin(&fragments)); - - enet_free(fragment); - } - - return -1; - } - - fragment->fragmentOffset = fragmentOffset; - fragment->fragmentLength = fragmentLength; - fragment->packet = packet; - fragment->command.header.command = commandNumber; - fragment->command.header.channelID = channelID; - - fragment->command.sendFragment.startSequenceNumber = startSequenceNumber; - - fragment->command.sendFragment.dataLength = ENET_HOST_TO_NET_16(fragmentLength); - fragment->command.sendFragment.fragmentCount = ENET_HOST_TO_NET_32(fragmentCount); - fragment->command.sendFragment.fragmentNumber = ENET_HOST_TO_NET_32(fragmentNumber); - fragment->command.sendFragment.totalLength = ENET_HOST_TO_NET_32(packet->dataLength); - fragment->command.sendFragment.fragmentOffset = ENET_NET_TO_HOST_32(fragmentOffset); - - enet_list_insert(enet_list_end(&fragments), fragment); - } - - packet->referenceCount += fragmentNumber; - - while (!enet_list_empty(&fragments)) { - fragment = (ENetOutgoingCommand *) enet_list_remove(enet_list_begin(&fragments)); - enet_peer_setup_outgoing_command(peer, fragment); - } - - return 0; - } - - command.header.channelID = channelID; - - if ((packet->flags & (ENET_PACKET_FLAG_RELIABLE | ENET_PACKET_FLAG_UNSEQUENCED)) == ENET_PACKET_FLAG_UNSEQUENCED) { - command.header.command = ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED | ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED; - command.sendUnsequenced.dataLength = ENET_HOST_TO_NET_16(packet->dataLength); - } - else if (packet->flags & ENET_PACKET_FLAG_RELIABLE || channel->outgoingUnreliableSequenceNumber >= 0xFFFF) { - command.header.command = ENET_PROTOCOL_COMMAND_SEND_RELIABLE | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.sendReliable.dataLength = ENET_HOST_TO_NET_16(packet->dataLength); - } - else { - command.header.command = ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE; - command.sendUnreliable.dataLength = ENET_HOST_TO_NET_16(packet->dataLength); - } - - if (enet_peer_queue_outgoing_command(peer, &command, packet, 0, packet->dataLength) == NULL) { - return -1; - } - - return 0; - } // enet_peer_send - - /** Attempts to dequeue any incoming queued packet. - * @param peer peer to dequeue packets from - * @param channelID holds the channel ID of the channel the packet was received on success - * @returns a pointer to the packet, or NULL if there are no available incoming queued packets - */ - ENetPacket * enet_peer_receive(ENetPeer *peer, enet_uint8 *channelID) { - ENetIncomingCommand *incomingCommand; - ENetPacket *packet; - - if (enet_list_empty(&peer->dispatchedCommands)) { - return NULL; - } - - incomingCommand = (ENetIncomingCommand *) enet_list_remove(enet_list_begin(&peer->dispatchedCommands)); - - if (channelID != NULL) { - *channelID = incomingCommand->command.header.channelID; - } - - packet = incomingCommand->packet; - --packet->referenceCount; - - if (incomingCommand->fragments != NULL) { - enet_free(incomingCommand->fragments); - } - - enet_free(incomingCommand); - peer->totalWaitingData -= packet->dataLength; - - return packet; - } - - static void enet_peer_reset_outgoing_commands(ENetList *queue) { - ENetOutgoingCommand *outgoingCommand; - - while (!enet_list_empty(queue)) { - outgoingCommand = (ENetOutgoingCommand *) enet_list_remove(enet_list_begin(queue)); - - if (outgoingCommand->packet != NULL) { - --outgoingCommand->packet->referenceCount; - - if (outgoingCommand->packet->referenceCount == 0) { - callbacks.packet_destroy(outgoingCommand->packet); - } - } - - enet_free(outgoingCommand); - } - } - - static void enet_peer_remove_incoming_commands(ENetList *queue, ENetListIterator startCommand, ENetListIterator endCommand) { - ENET_UNUSED(queue) - - ENetListIterator currentCommand; - - for (currentCommand = startCommand; currentCommand != endCommand;) { - ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand; - - currentCommand = enet_list_next(currentCommand); - enet_list_remove(&incomingCommand->incomingCommandList); - - if (incomingCommand->packet != NULL) { - --incomingCommand->packet->referenceCount; - - if (incomingCommand->packet->referenceCount == 0) { - callbacks.packet_destroy(incomingCommand->packet); - } - } - - if (incomingCommand->fragments != NULL) { - enet_free(incomingCommand->fragments); - } - - enet_free(incomingCommand); - } - } - - static void enet_peer_reset_incoming_commands(ENetList *queue) { - enet_peer_remove_incoming_commands(queue, enet_list_begin(queue), enet_list_end(queue)); - } - - void enet_peer_reset_queues(ENetPeer *peer) { - ENetChannel *channel; - - if (peer->needsDispatch) { - enet_list_remove(&peer->dispatchList); - peer->needsDispatch = 0; - } - - while (!enet_list_empty(&peer->acknowledgements)) { - enet_free(enet_list_remove(enet_list_begin(&peer->acknowledgements))); - } - - enet_peer_reset_outgoing_commands(&peer->sentReliableCommands); - enet_peer_reset_outgoing_commands(&peer->sentUnreliableCommands); - enet_peer_reset_outgoing_commands(&peer->outgoingReliableCommands); - enet_peer_reset_outgoing_commands(&peer->outgoingUnreliableCommands); - enet_peer_reset_incoming_commands(&peer->dispatchedCommands); - - if (peer->channels != NULL && peer->channelCount > 0) { - for (channel = peer->channels; channel < &peer->channels[peer->channelCount]; ++channel) { - enet_peer_reset_incoming_commands(&channel->incomingReliableCommands); - enet_peer_reset_incoming_commands(&channel->incomingUnreliableCommands); - } - - enet_free(peer->channels); - } - - peer->channels = NULL; - peer->channelCount = 0; - } - - void enet_peer_on_connect(ENetPeer *peer) { - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - if (peer->incomingBandwidth != 0) { - ++peer->host->bandwidthLimitedPeers; - } - - ++peer->host->connectedPeers; - } - } - - void enet_peer_on_disconnect(ENetPeer *peer) { - if (peer->state == ENET_PEER_STATE_CONNECTED || peer->state == ENET_PEER_STATE_DISCONNECT_LATER) { - if (peer->incomingBandwidth != 0) { - --peer->host->bandwidthLimitedPeers; - } - - --peer->host->connectedPeers; - } - } - - /** Forcefully disconnects a peer. - * @param peer peer to forcefully disconnect - * @remarks The foreign host represented by the peer is not notified of the disconnection and will timeout - * on its connection to the local host. - */ - void enet_peer_reset(ENetPeer *peer) { - enet_peer_on_disconnect(peer); - - // We don't want to reset connectID here, otherwise, we can't get it in the Disconnect event - // peer->connectID = 0; - peer->outgoingPeerID = ENET_PROTOCOL_MAXIMUM_PEER_ID; - peer->state = ENET_PEER_STATE_DISCONNECTED; - peer->incomingBandwidth = 0; - peer->outgoingBandwidth = 0; - peer->incomingBandwidthThrottleEpoch = 0; - peer->outgoingBandwidthThrottleEpoch = 0; - peer->incomingDataTotal = 0; - peer->totalDataReceived = 0; - peer->outgoingDataTotal = 0; - peer->totalDataSent = 0; - peer->lastSendTime = 0; - peer->lastReceiveTime = 0; - peer->nextTimeout = 0; - peer->earliestTimeout = 0; - peer->packetLossEpoch = 0; - peer->packetsSent = 0; - peer->totalPacketsSent = 0; - peer->packetsLost = 0; - peer->totalPacketsLost = 0; - peer->packetLoss = 0; - peer->packetLossVariance = 0; - peer->packetThrottle = ENET_PEER_DEFAULT_PACKET_THROTTLE; - peer->packetThrottleLimit = ENET_PEER_PACKET_THROTTLE_SCALE; - peer->packetThrottleCounter = 0; - peer->packetThrottleEpoch = 0; - peer->packetThrottleAcceleration = ENET_PEER_PACKET_THROTTLE_ACCELERATION; - peer->packetThrottleDeceleration = ENET_PEER_PACKET_THROTTLE_DECELERATION; - peer->packetThrottleInterval = ENET_PEER_PACKET_THROTTLE_INTERVAL; - peer->pingInterval = ENET_PEER_PING_INTERVAL; - peer->timeoutLimit = ENET_PEER_TIMEOUT_LIMIT; - peer->timeoutMinimum = ENET_PEER_TIMEOUT_MINIMUM; - peer->timeoutMaximum = ENET_PEER_TIMEOUT_MAXIMUM; - peer->lastRoundTripTime = ENET_PEER_DEFAULT_ROUND_TRIP_TIME; - peer->lowestRoundTripTime = ENET_PEER_DEFAULT_ROUND_TRIP_TIME; - peer->lastRoundTripTimeVariance = 0; - peer->highestRoundTripTimeVariance = 0; - peer->roundTripTime = ENET_PEER_DEFAULT_ROUND_TRIP_TIME; - peer->roundTripTimeVariance = 0; - peer->mtu = peer->host->mtu; - peer->reliableDataInTransit = 0; - peer->outgoingReliableSequenceNumber = 0; - peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - peer->incomingUnsequencedGroup = 0; - peer->outgoingUnsequencedGroup = 0; - peer->eventData = 0; - peer->totalWaitingData = 0; - - memset(peer->unsequencedWindow, 0, sizeof(peer->unsequencedWindow)); - enet_peer_reset_queues(peer); - } - - /** Sends a ping request to a peer. - * @param peer destination for the ping request - * @remarks ping requests factor into the mean round trip time as designated by the - * roundTripTime field in the ENetPeer structure. ENet automatically pings all connected - * peers at regular intervals, however, this function may be called to ensure more - * frequent ping requests. - */ - void enet_peer_ping(ENetPeer *peer) { - ENetProtocol command; - - if (peer->state != ENET_PEER_STATE_CONNECTED) { - return; - } - - command.header.command = ENET_PROTOCOL_COMMAND_PING | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - - enet_peer_queue_outgoing_command(peer, &command, NULL, 0, 0); - } - - /** Sets the interval at which pings will be sent to a peer. - * - * Pings are used both to monitor the liveness of the connection and also to dynamically - * adjust the throttle during periods of low traffic so that the throttle has reasonable - * responsiveness during traffic spikes. - * - * @param peer the peer to adjust - * @param pingInterval the interval at which to send pings; defaults to ENET_PEER_PING_INTERVAL if 0 - */ - void enet_peer_ping_interval(ENetPeer *peer, enet_uint32 pingInterval) { - peer->pingInterval = pingInterval ? pingInterval : (enet_uint32)ENET_PEER_PING_INTERVAL; - } - - /** Sets the timeout parameters for a peer. - * - * The timeout parameter control how and when a peer will timeout from a failure to acknowledge - * reliable traffic. Timeout values use an exponential backoff mechanism, where if a reliable - * packet is not acknowledge within some multiple of the average RTT plus a variance tolerance, - * the timeout will be doubled until it reaches a set limit. If the timeout is thus at this - * limit and reliable packets have been sent but not acknowledged within a certain minimum time - * period, the peer will be disconnected. Alternatively, if reliable packets have been sent - * but not acknowledged for a certain maximum time period, the peer will be disconnected regardless - * of the current timeout limit value. - * - * @param peer the peer to adjust - * @param timeoutLimit the timeout limit; defaults to ENET_PEER_TIMEOUT_LIMIT if 0 - * @param timeoutMinimum the timeout minimum; defaults to ENET_PEER_TIMEOUT_MINIMUM if 0 - * @param timeoutMaximum the timeout maximum; defaults to ENET_PEER_TIMEOUT_MAXIMUM if 0 - */ - - void enet_peer_timeout(ENetPeer *peer, enet_uint32 timeoutLimit, enet_uint32 timeoutMinimum, enet_uint32 timeoutMaximum) { - peer->timeoutLimit = timeoutLimit ? timeoutLimit : (enet_uint32)ENET_PEER_TIMEOUT_LIMIT; - peer->timeoutMinimum = timeoutMinimum ? timeoutMinimum : (enet_uint32)ENET_PEER_TIMEOUT_MINIMUM; - peer->timeoutMaximum = timeoutMaximum ? timeoutMaximum : (enet_uint32)ENET_PEER_TIMEOUT_MAXIMUM; - } - - /** Force an immediate disconnection from a peer. - * @param peer peer to disconnect - * @param data data describing the disconnection - * @remarks No ENET_EVENT_DISCONNECT event will be generated. The foreign peer is not - * guaranteed to receive the disconnect notification, and is reset immediately upon - * return from this function. - */ - void enet_peer_disconnect_now(ENetPeer *peer, enet_uint32 data) { - ENetProtocol command; - - if (peer->state == ENET_PEER_STATE_DISCONNECTED) { - return; - } - - if (peer->state != ENET_PEER_STATE_ZOMBIE && peer->state != ENET_PEER_STATE_DISCONNECTING) { - enet_peer_reset_queues(peer); - - command.header.command = ENET_PROTOCOL_COMMAND_DISCONNECT | ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED; - command.header.channelID = 0xFF; - command.disconnect.data = ENET_HOST_TO_NET_32(data); - - enet_peer_queue_outgoing_command(peer, &command, NULL, 0, 0); - enet_host_flush(peer->host); - } - - enet_peer_reset(peer); - } - - /** Request a disconnection from a peer. - * @param peer peer to request a disconnection - * @param data data describing the disconnection - * @remarks An ENET_EVENT_DISCONNECT event will be generated by enet_host_service() - * once the disconnection is complete. - */ - void enet_peer_disconnect(ENetPeer *peer, enet_uint32 data) { - ENetProtocol command; - - if (peer->state == ENET_PEER_STATE_DISCONNECTING || - peer->state == ENET_PEER_STATE_DISCONNECTED || - peer->state == ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT || - peer->state == ENET_PEER_STATE_ZOMBIE - ) { - return; - } - - enet_peer_reset_queues(peer); - - command.header.command = ENET_PROTOCOL_COMMAND_DISCONNECT; - command.header.channelID = 0xFF; - command.disconnect.data = ENET_HOST_TO_NET_32(data); - - if (peer->state == ENET_PEER_STATE_CONNECTED || peer->state == ENET_PEER_STATE_DISCONNECT_LATER) { - command.header.command |= ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - } else { - command.header.command |= ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED; - } - - enet_peer_queue_outgoing_command(peer, &command, NULL, 0, 0); - - if (peer->state == ENET_PEER_STATE_CONNECTED || peer->state == ENET_PEER_STATE_DISCONNECT_LATER) { - enet_peer_on_disconnect(peer); - - peer->state = ENET_PEER_STATE_DISCONNECTING; - } else { - enet_host_flush(peer->host); - enet_peer_reset(peer); - } - } - - /** Request a disconnection from a peer, but only after all queued outgoing packets are sent. - * @param peer peer to request a disconnection - * @param data data describing the disconnection - * @remarks An ENET_EVENT_DISCONNECT event will be generated by enet_host_service() - * once the disconnection is complete. - */ - void enet_peer_disconnect_later(ENetPeer *peer, enet_uint32 data) { - if ((peer->state == ENET_PEER_STATE_CONNECTED || peer->state == ENET_PEER_STATE_DISCONNECT_LATER) && - !(enet_list_empty(&peer->outgoingReliableCommands) && - enet_list_empty(&peer->outgoingUnreliableCommands) && - enet_list_empty(&peer->sentReliableCommands)) - ) { - peer->state = ENET_PEER_STATE_DISCONNECT_LATER; - peer->eventData = data; - } else { - enet_peer_disconnect(peer, data); - } - } - - ENetAcknowledgement *enet_peer_queue_acknowledgement(ENetPeer *peer, const ENetProtocol *command, enet_uint16 sentTime) { - ENetAcknowledgement *acknowledgement; - - if (command->header.channelID < peer->channelCount) { - ENetChannel *channel = &peer->channels[command->header.channelID]; - enet_uint16 reliableWindow = command->header.reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - enet_uint16 currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (command->header.reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - } - - if (reliableWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1 && reliableWindow <= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS) { - return NULL; - } - } - - acknowledgement = (ENetAcknowledgement *) enet_malloc(sizeof(ENetAcknowledgement)); - if (acknowledgement == NULL) { - return NULL; - } - - peer->outgoingDataTotal += sizeof(ENetProtocolAcknowledge); - - acknowledgement->sentTime = sentTime; - acknowledgement->command = *command; - - enet_list_insert(enet_list_end(&peer->acknowledgements), acknowledgement); - return acknowledgement; - } - - void enet_peer_setup_outgoing_command(ENetPeer *peer, ENetOutgoingCommand *outgoingCommand) { - ENetChannel *channel = &peer->channels[outgoingCommand->command.header.channelID]; - peer->outgoingDataTotal += enet_protocol_command_size(outgoingCommand->command.header.command) + outgoingCommand->fragmentLength; - - if (outgoingCommand->command.header.channelID == 0xFF) { - ++peer->outgoingReliableSequenceNumber; - - outgoingCommand->reliableSequenceNumber = peer->outgoingReliableSequenceNumber; - outgoingCommand->unreliableSequenceNumber = 0; - } - else if (outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) { - ++channel->outgoingReliableSequenceNumber; - channel->outgoingUnreliableSequenceNumber = 0; - - outgoingCommand->reliableSequenceNumber = channel->outgoingReliableSequenceNumber; - outgoingCommand->unreliableSequenceNumber = 0; - } - else if (outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED) { - ++peer->outgoingUnsequencedGroup; - - outgoingCommand->reliableSequenceNumber = 0; - outgoingCommand->unreliableSequenceNumber = 0; - } - else { - if (outgoingCommand->fragmentOffset == 0) { - ++channel->outgoingUnreliableSequenceNumber; - } - - outgoingCommand->reliableSequenceNumber = channel->outgoingReliableSequenceNumber; - outgoingCommand->unreliableSequenceNumber = channel->outgoingUnreliableSequenceNumber; - } - - outgoingCommand->sendAttempts = 0; - outgoingCommand->sentTime = 0; - outgoingCommand->roundTripTimeout = 0; - outgoingCommand->roundTripTimeoutLimit = 0; - outgoingCommand->command.header.reliableSequenceNumber = ENET_HOST_TO_NET_16(outgoingCommand->reliableSequenceNumber); - - switch (outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK) { - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE: - outgoingCommand->command.sendUnreliable.unreliableSequenceNumber = ENET_HOST_TO_NET_16(outgoingCommand->unreliableSequenceNumber); - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED: - outgoingCommand->command.sendUnsequenced.unsequencedGroup = ENET_HOST_TO_NET_16(peer->outgoingUnsequencedGroup); - break; - - default: - break; - } - - if (outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) { - enet_list_insert(enet_list_end(&peer->outgoingReliableCommands), outgoingCommand); - } else { - enet_list_insert(enet_list_end(&peer->outgoingUnreliableCommands), outgoingCommand); - } - } - - ENetOutgoingCommand * enet_peer_queue_outgoing_command(ENetPeer *peer, const ENetProtocol *command, ENetPacket *packet, enet_uint32 offset, enet_uint16 length) { - ENetOutgoingCommand *outgoingCommand = (ENetOutgoingCommand *) enet_malloc(sizeof(ENetOutgoingCommand)); - - if (outgoingCommand == NULL) { - return NULL; - } - - outgoingCommand->command = *command; - outgoingCommand->fragmentOffset = offset; - outgoingCommand->fragmentLength = length; - outgoingCommand->packet = packet; - if (packet != NULL) { - ++packet->referenceCount; - } - - enet_peer_setup_outgoing_command(peer, outgoingCommand); - return outgoingCommand; - } - - void enet_peer_dispatch_incoming_unreliable_commands(ENetPeer *peer, ENetChannel *channel) { - ENetListIterator droppedCommand, startCommand, currentCommand; - - for (droppedCommand = startCommand = currentCommand = enet_list_begin(&channel->incomingUnreliableCommands); - currentCommand != enet_list_end(&channel->incomingUnreliableCommands); - currentCommand = enet_list_next(currentCommand) - ) { - ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand; - - if ((incomingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED) { - continue; - } - - if (incomingCommand->reliableSequenceNumber == channel->incomingReliableSequenceNumber) { - if (incomingCommand->fragmentsRemaining <= 0) { - channel->incomingUnreliableSequenceNumber = incomingCommand->unreliableSequenceNumber; - continue; - } - - if (startCommand != currentCommand) { - enet_list_move(enet_list_end(&peer->dispatchedCommands), startCommand, enet_list_previous(currentCommand)); - - if (!peer->needsDispatch) { - enet_list_insert(enet_list_end(&peer->host->dispatchQueue), &peer->dispatchList); - peer->needsDispatch = 1; - } - - droppedCommand = currentCommand; - } else if (droppedCommand != currentCommand) { - droppedCommand = enet_list_previous(currentCommand); - } - } else { - enet_uint16 reliableWindow = incomingCommand->reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - enet_uint16 currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - } - - if (reliableWindow >= currentWindow && reliableWindow < currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) { - break; - } - - droppedCommand = enet_list_next(currentCommand); - - if (startCommand != currentCommand) { - enet_list_move(enet_list_end(&peer->dispatchedCommands), startCommand, enet_list_previous(currentCommand)); - - if (!peer->needsDispatch) { - enet_list_insert(enet_list_end(&peer->host->dispatchQueue), &peer->dispatchList); - peer->needsDispatch = 1; - } - } - } - - startCommand = enet_list_next(currentCommand); - } - - if (startCommand != currentCommand) { - enet_list_move(enet_list_end(&peer->dispatchedCommands), startCommand, enet_list_previous(currentCommand)); - - if (!peer->needsDispatch) { - enet_list_insert(enet_list_end(&peer->host->dispatchQueue), &peer->dispatchList); - peer->needsDispatch = 1; - } - - droppedCommand = currentCommand; - } - - enet_peer_remove_incoming_commands(&channel->incomingUnreliableCommands,enet_list_begin(&channel->incomingUnreliableCommands), droppedCommand); - } - - void enet_peer_dispatch_incoming_reliable_commands(ENetPeer *peer, ENetChannel *channel) { - ENetListIterator currentCommand; - - for (currentCommand = enet_list_begin(&channel->incomingReliableCommands); - currentCommand != enet_list_end(&channel->incomingReliableCommands); - currentCommand = enet_list_next(currentCommand) - ) { - ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (incomingCommand->fragmentsRemaining > 0 || incomingCommand->reliableSequenceNumber != (enet_uint16) (channel->incomingReliableSequenceNumber + 1)) { - break; - } - - channel->incomingReliableSequenceNumber = incomingCommand->reliableSequenceNumber; - - if (incomingCommand->fragmentCount > 0) { - channel->incomingReliableSequenceNumber += incomingCommand->fragmentCount - 1; - } - } - - if (currentCommand == enet_list_begin(&channel->incomingReliableCommands)) { - return; - } - - channel->incomingUnreliableSequenceNumber = 0; - enet_list_move(enet_list_end(&peer->dispatchedCommands), enet_list_begin(&channel->incomingReliableCommands), enet_list_previous(currentCommand)); - - if (!peer->needsDispatch) { - enet_list_insert(enet_list_end(&peer->host->dispatchQueue), &peer->dispatchList); - peer->needsDispatch = 1; - } - - if (!enet_list_empty(&channel->incomingUnreliableCommands)) { - enet_peer_dispatch_incoming_unreliable_commands(peer, channel); - } - } - - ENetIncomingCommand * enet_peer_queue_incoming_command(ENetPeer *peer, const ENetProtocol *command, const void *data, size_t dataLength, enet_uint32 flags, enet_uint32 fragmentCount) { - static ENetIncomingCommand dummyCommand; - - ENetChannel *channel = &peer->channels[command->header.channelID]; - enet_uint32 unreliableSequenceNumber = 0, reliableSequenceNumber = 0; - enet_uint16 reliableWindow, currentWindow; - ENetIncomingCommand *incomingCommand; - ENetListIterator currentCommand; - ENetPacket *packet = NULL; - - if (peer->state == ENET_PEER_STATE_DISCONNECT_LATER) { - goto discardCommand; - } - - if ((command->header.command & ENET_PROTOCOL_COMMAND_MASK) != ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED) { - reliableSequenceNumber = command->header.reliableSequenceNumber; - reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - } - - if (reliableWindow < currentWindow || reliableWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) { - goto discardCommand; - } - } - - switch (command->header.command & ENET_PROTOCOL_COMMAND_MASK) { - case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT: - case ENET_PROTOCOL_COMMAND_SEND_RELIABLE: - if (reliableSequenceNumber == channel->incomingReliableSequenceNumber) { - goto discardCommand; - } - - for (currentCommand = enet_list_previous(enet_list_end(&channel->incomingReliableCommands)); - currentCommand != enet_list_end(&channel->incomingReliableCommands); - currentCommand = enet_list_previous(currentCommand) - ) { - incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - continue; - } - } else if (incomingCommand->reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber <= reliableSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < reliableSequenceNumber) { - break; - } - - goto discardCommand; - } - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE: - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT: - unreliableSequenceNumber = ENET_NET_TO_HOST_16(command->sendUnreliable.unreliableSequenceNumber); - - if (reliableSequenceNumber == channel->incomingReliableSequenceNumber && unreliableSequenceNumber <= channel->incomingUnreliableSequenceNumber) { - goto discardCommand; - } - - for (currentCommand = enet_list_previous(enet_list_end(&channel->incomingUnreliableCommands)); - currentCommand != enet_list_end(&channel->incomingUnreliableCommands); - currentCommand = enet_list_previous(currentCommand) - ) { - incomingCommand = (ENetIncomingCommand *) currentCommand; - - if ((command->header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED) { - continue; - } - - if (reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - continue; - } - } else if (incomingCommand->reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber < reliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber > reliableSequenceNumber) { - continue; - } - - if (incomingCommand->unreliableSequenceNumber <= unreliableSequenceNumber) { - if (incomingCommand->unreliableSequenceNumber < unreliableSequenceNumber) { - break; - } - - goto discardCommand; - } - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED: - currentCommand = enet_list_end(&channel->incomingUnreliableCommands); - break; - - default: - goto discardCommand; - } - - if (peer->totalWaitingData >= peer->host->maximumWaitingData) { - goto notifyError; - } - - packet = callbacks.packet_create(data, dataLength, flags); - if (packet == NULL) { - goto notifyError; - } - - incomingCommand = (ENetIncomingCommand *) enet_malloc(sizeof(ENetIncomingCommand)); - if (incomingCommand == NULL) { - goto notifyError; - } - - incomingCommand->reliableSequenceNumber = command->header.reliableSequenceNumber; - incomingCommand->unreliableSequenceNumber = unreliableSequenceNumber & 0xFFFF; - incomingCommand->command = *command; - incomingCommand->fragmentCount = fragmentCount; - incomingCommand->fragmentsRemaining = fragmentCount; - incomingCommand->packet = packet; - incomingCommand->fragments = NULL; - - if (fragmentCount > 0) { - if (fragmentCount <= ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT) { - incomingCommand->fragments = (enet_uint32 *) enet_malloc((fragmentCount + 31) / 32 * sizeof(enet_uint32)); - } - - if (incomingCommand->fragments == NULL) { - enet_free(incomingCommand); - - goto notifyError; - } - - memset(incomingCommand->fragments, 0, (fragmentCount + 31) / 32 * sizeof(enet_uint32)); - } - - assert(packet != NULL); - ++packet->referenceCount; - peer->totalWaitingData += packet->dataLength; - - enet_list_insert(enet_list_next(currentCommand), incomingCommand); - - switch (command->header.command & ENET_PROTOCOL_COMMAND_MASK) { - case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT: - case ENET_PROTOCOL_COMMAND_SEND_RELIABLE: - enet_peer_dispatch_incoming_reliable_commands(peer, channel); - break; - - default: - enet_peer_dispatch_incoming_unreliable_commands(peer, channel); - break; - } - - return incomingCommand; - - discardCommand: - if (fragmentCount > 0) { - goto notifyError; - } - - if (packet != NULL && packet->referenceCount == 0) { - callbacks.packet_destroy(packet); - } - - return &dummyCommand; - - notifyError: - if (packet != NULL && packet->referenceCount == 0) { - callbacks.packet_destroy(packet); - } - - return NULL; - } /* enet_peer_queue_incoming_command */ - -// =======================================================================// -// ! -// ! Host -// ! -// =======================================================================// - - /** Creates a host for communicating to peers. - * - * @param address the address at which other peers may connect to this host. If NULL, then no peers may connect to the host. - * @param peerCount the maximum number of peers that should be allocated for the host. - * @param channelLimit the maximum number of channels allowed; if 0, then this is equivalent to ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT - * @param incomingBandwidth downstream bandwidth of the host in bytes/second; if 0, ENet will assume unlimited bandwidth. - * @param outgoingBandwidth upstream bandwidth of the host in bytes/second; if 0, ENet will assume unlimited bandwidth. - * - * @returns the host on success and NULL on failure - * - * @remarks ENet will strategically drop packets on specific sides of a connection between hosts - * to ensure the host's bandwidth is not overwhelmed. The bandwidth parameters also determine - * the window size of a connection which limits the amount of reliable packets that may be in transit - * at any given time. - */ - ENetHost * enet_host_create(const ENetAddress *address, size_t peerCount, size_t channelLimit, enet_uint32 incomingBandwidth, enet_uint32 outgoingBandwidth) { - ENetHost *host; - ENetPeer *currentPeer; - - if (peerCount > ENET_PROTOCOL_MAXIMUM_PEER_ID) { - return NULL; - } - - host = (ENetHost *) enet_malloc(sizeof(ENetHost)); - if (host == NULL) { return NULL; } - memset(host, 0, sizeof(ENetHost)); - - host->peers = (ENetPeer *) enet_malloc(peerCount * sizeof(ENetPeer)); - if (host->peers == NULL) { - enet_free(host); - return NULL; - } - - memset(host->peers, 0, peerCount * sizeof(ENetPeer)); - - host->socket = enet_socket_create(ENET_SOCKET_TYPE_DATAGRAM); - if (host->socket != ENET_SOCKET_NULL) { - enet_socket_set_option (host->socket, ENET_SOCKOPT_IPV6_V6ONLY, 0); - } - - if (host->socket == ENET_SOCKET_NULL || (address != NULL && enet_socket_bind(host->socket, address) < 0)) { - if (host->socket != ENET_SOCKET_NULL) { - enet_socket_destroy(host->socket); - } - - enet_free(host->peers); - enet_free(host); - - return NULL; - } - - enet_socket_set_option(host->socket, ENET_SOCKOPT_NONBLOCK, 1); - enet_socket_set_option(host->socket, ENET_SOCKOPT_BROADCAST, 1); - enet_socket_set_option(host->socket, ENET_SOCKOPT_RCVBUF, ENET_HOST_RECEIVE_BUFFER_SIZE); - enet_socket_set_option(host->socket, ENET_SOCKOPT_SNDBUF, ENET_HOST_SEND_BUFFER_SIZE); - enet_socket_set_option(host->socket, ENET_SOCKOPT_IPV6_V6ONLY, 0); - - if (address != NULL && enet_socket_get_address(host->socket, &host->address) < 0) { - host->address = *address; - } - - if (!channelLimit || channelLimit > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) { - channelLimit = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT; - } - - host->randomSeed = (enet_uint32) ((uintptr_t) host % UINT32_MAX); - host->randomSeed += enet_host_random_seed(); - host->randomSeed = (host->randomSeed << 16) | (host->randomSeed >> 16); - host->channelLimit = channelLimit; - host->incomingBandwidth = incomingBandwidth; - host->outgoingBandwidth = outgoingBandwidth; - host->bandwidthThrottleEpoch = 0; - host->recalculateBandwidthLimits = 0; - host->mtu = ENET_HOST_DEFAULT_MTU; - host->peerCount = peerCount; - host->commandCount = 0; - host->bufferCount = 0; - host->checksum = NULL; - host->receivedAddress.host = ENET_HOST_ANY; - host->receivedAddress.port = 0; - host->receivedData = NULL; - host->receivedDataLength = 0; - host->totalSentData = 0; - host->totalSentPackets = 0; - host->totalReceivedData = 0; - host->totalReceivedPackets = 0; - host->connectedPeers = 0; - host->bandwidthLimitedPeers = 0; - host->duplicatePeers = ENET_PROTOCOL_MAXIMUM_PEER_ID; - host->maximumPacketSize = ENET_HOST_DEFAULT_MAXIMUM_PACKET_SIZE; - host->maximumWaitingData = ENET_HOST_DEFAULT_MAXIMUM_WAITING_DATA; - host->compressor.context = NULL; - host->compressor.compress = NULL; - host->compressor.decompress = NULL; - host->compressor.destroy = NULL; - host->intercept = NULL; - - enet_list_clear(&host->dispatchQueue); - - for (currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - currentPeer->host = host; - currentPeer->incomingPeerID = currentPeer - host->peers; - currentPeer->outgoingSessionID = currentPeer->incomingSessionID = 0xFF; - currentPeer->data = NULL; - - enet_list_clear(¤tPeer->acknowledgements); - enet_list_clear(¤tPeer->sentReliableCommands); - enet_list_clear(¤tPeer->sentUnreliableCommands); - enet_list_clear(¤tPeer->outgoingReliableCommands); - enet_list_clear(¤tPeer->outgoingUnreliableCommands); - enet_list_clear(¤tPeer->dispatchedCommands); - - enet_peer_reset(currentPeer); - } - - return host; - } /* enet_host_create */ - - /** Destroys the host and all resources associated with it. - * @param host pointer to the host to destroy - */ - void enet_host_destroy(ENetHost *host) { - ENetPeer *currentPeer; - - if (host == NULL) { - return; - } - - enet_socket_destroy(host->socket); - - for (currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - enet_peer_reset(currentPeer); - } - - if (host->compressor.context != NULL && host->compressor.destroy) { - (*host->compressor.destroy)(host->compressor.context); - } - - enet_free(host->peers); - enet_free(host); - } - - /** Initiates a connection to a foreign host. - * @param host host seeking the connection - * @param address destination for the connection - * @param channelCount number of channels to allocate - * @param data user data supplied to the receiving host - * @returns a peer representing the foreign host on success, NULL on failure - * @remarks The peer returned will have not completed the connection until enet_host_service() - * notifies of an ENET_EVENT_TYPE_CONNECT event for the peer. - */ - ENetPeer * enet_host_connect(ENetHost *host, const ENetAddress *address, size_t channelCount, enet_uint32 data) { - ENetPeer *currentPeer; - ENetChannel *channel; - ENetProtocol command; - - if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT) { - channelCount = ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT; - } else if (channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) { - channelCount = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT; - } - - for (currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - if (currentPeer->state == ENET_PEER_STATE_DISCONNECTED) { - break; - } - } - - if (currentPeer >= &host->peers[host->peerCount]) { - return NULL; - } - - currentPeer->channels = (ENetChannel *) enet_malloc(channelCount * sizeof(ENetChannel)); - if (currentPeer->channels == NULL) { - return NULL; - } - - currentPeer->channelCount = channelCount; - currentPeer->state = ENET_PEER_STATE_CONNECTING; - currentPeer->address = *address; - currentPeer->connectID = ++host->randomSeed; - - if (host->outgoingBandwidth == 0) { - currentPeer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } else { - currentPeer->windowSize = (host->outgoingBandwidth / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } - - if (currentPeer->windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) { - currentPeer->windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else if (currentPeer->windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) { - currentPeer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } - - for (channel = currentPeer->channels; channel < ¤tPeer->channels[channelCount]; ++channel) { - channel->outgoingReliableSequenceNumber = 0; - channel->outgoingUnreliableSequenceNumber = 0; - channel->incomingReliableSequenceNumber = 0; - channel->incomingUnreliableSequenceNumber = 0; - - enet_list_clear(&channel->incomingReliableCommands); - enet_list_clear(&channel->incomingUnreliableCommands); - - channel->usedReliableWindows = 0; - memset(channel->reliableWindows, 0, sizeof(channel->reliableWindows)); - } - - command.header.command = ENET_PROTOCOL_COMMAND_CONNECT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - command.connect.outgoingPeerID = ENET_HOST_TO_NET_16(currentPeer->incomingPeerID); - command.connect.incomingSessionID = currentPeer->incomingSessionID; - command.connect.outgoingSessionID = currentPeer->outgoingSessionID; - command.connect.mtu = ENET_HOST_TO_NET_32(currentPeer->mtu); - command.connect.windowSize = ENET_HOST_TO_NET_32(currentPeer->windowSize); - command.connect.channelCount = ENET_HOST_TO_NET_32(channelCount); - command.connect.incomingBandwidth = ENET_HOST_TO_NET_32(host->incomingBandwidth); - command.connect.outgoingBandwidth = ENET_HOST_TO_NET_32(host->outgoingBandwidth); - command.connect.packetThrottleInterval = ENET_HOST_TO_NET_32(currentPeer->packetThrottleInterval); - command.connect.packetThrottleAcceleration = ENET_HOST_TO_NET_32(currentPeer->packetThrottleAcceleration); - command.connect.packetThrottleDeceleration = ENET_HOST_TO_NET_32(currentPeer->packetThrottleDeceleration); - command.connect.connectID = currentPeer->connectID; - command.connect.data = ENET_HOST_TO_NET_32(data); - - enet_peer_queue_outgoing_command(currentPeer, &command, NULL, 0, 0); - - return currentPeer; - } /* enet_host_connect */ - - /** Queues a packet to be sent to all peers associated with the host. - * @param host host on which to broadcast the packet - * @param channelID channel on which to broadcast - * @param packet packet to broadcast - */ - void enet_host_broadcast(ENetHost *host, enet_uint8 channelID, ENetPacket *packet) { - ENetPeer *currentPeer; - - for (currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - if (currentPeer->state != ENET_PEER_STATE_CONNECTED) { - continue; - } - - enet_peer_send(currentPeer, channelID, packet); - } - - if (packet->referenceCount == 0) { - callbacks.packet_destroy(packet); - } - } - - /** Sends raw data to specified address. Useful when you want to send unconnected data using host's socket. - * @param host host sending data - * @param address destination address - * @param data data pointer - * @param dataLength length of data to send - * @retval >=0 bytes sent - * @retval <0 error - * @sa enet_socket_send - */ - int enet_host_send_raw(ENetHost *host, const ENetAddress* address, enet_uint8* data, size_t dataLength) { - ENetBuffer buffer; - buffer.data = data; - buffer.dataLength = dataLength; - return enet_socket_send(host->socket, address, &buffer, 1); - } - - /** Sends raw data to specified address with extended arguments. Allows to send only part of data, handy for other programming languages. - * I.e. if you have data =- { 0, 1, 2, 3 } and call function as enet_host_send_raw_ex(data, 1, 2) then it will skip 1 byte and send 2 bytes { 1, 2 }. - * @param host host sending data - * @param address destination address - * @param data data pointer - * @param skipBytes number of bytes to skip from start of data - * @param bytesToSend number of bytes to send - * @retval >=0 bytes sent - * @retval <0 error - * @sa enet_socket_send - */ - int enet_host_send_raw_ex(ENetHost *host, const ENetAddress* address, enet_uint8* data, size_t skipBytes, size_t bytesToSend) { - ENetBuffer buffer; - buffer.data = data + skipBytes; - buffer.dataLength = bytesToSend; - return enet_socket_send(host->socket, address, &buffer, 1); - } - - /** Sets intercept callback for the host. - * @param host host to set a callback - * @param callback intercept callback - */ - void enet_host_set_intercept(ENetHost *host, const ENetInterceptCallback callback) { - host->intercept = callback; - } - - /** Sets the packet compressor the host should use to compress and decompress packets. - * @param host host to enable or disable compression for - * @param compressor callbacks for for the packet compressor; if NULL, then compression is disabled - */ - void enet_host_compress(ENetHost *host, const ENetCompressor *compressor) { - if (host->compressor.context != NULL && host->compressor.destroy) { - (*host->compressor.destroy)(host->compressor.context); - } - - if (compressor) { - host->compressor = *compressor; - } else { - host->compressor.context = NULL; - } - } - - /** Limits the maximum allowed channels of future incoming connections. - * @param host host to limit - * @param channelLimit the maximum number of channels allowed; if 0, then this is equivalent to ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT - */ - void enet_host_channel_limit(ENetHost *host, size_t channelLimit) { - if (!channelLimit || channelLimit > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) { - channelLimit = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT; - } - host->channelLimit = channelLimit; - } - - /** Adjusts the bandwidth limits of a host. - * @param host host to adjust - * @param incomingBandwidth new incoming bandwidth - * @param outgoingBandwidth new outgoing bandwidth - * @remarks the incoming and outgoing bandwidth parameters are identical in function to those - * specified in enet_host_create(). - */ - void enet_host_bandwidth_limit(ENetHost *host, enet_uint32 incomingBandwidth, enet_uint32 outgoingBandwidth) { - host->incomingBandwidth = incomingBandwidth; - host->outgoingBandwidth = outgoingBandwidth; - host->recalculateBandwidthLimits = 1; - } - - void enet_host_bandwidth_throttle(ENetHost *host) { - enet_uint32 timeCurrent = enet_time_get(); - enet_uint32 elapsedTime = timeCurrent - host->bandwidthThrottleEpoch; - enet_uint32 peersRemaining = (enet_uint32) host->connectedPeers; - enet_uint32 dataTotal = ~0; - enet_uint32 bandwidth = ~0; - enet_uint32 throttle = 0; - enet_uint32 bandwidthLimit = 0; - - int needsAdjustment = host->bandwidthLimitedPeers > 0 ? 1 : 0; - ENetPeer *peer; - ENetProtocol command; - - if (elapsedTime < ENET_HOST_BANDWIDTH_THROTTLE_INTERVAL) { - return; - } - - if (host->outgoingBandwidth == 0 && host->incomingBandwidth == 0) { - return; - } - - host->bandwidthThrottleEpoch = timeCurrent; - - if (peersRemaining == 0) { - return; - } - - if (host->outgoingBandwidth != 0) { - dataTotal = 0; - bandwidth = (host->outgoingBandwidth * elapsedTime) / 1000; - - for (peer = host->peers; peer < &host->peers[host->peerCount]; ++peer) { - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - continue; - } - - dataTotal += peer->outgoingDataTotal; - } - } - - while (peersRemaining > 0 && needsAdjustment != 0) { - needsAdjustment = 0; - - if (dataTotal <= bandwidth) { - throttle = ENET_PEER_PACKET_THROTTLE_SCALE; - } else { - throttle = (bandwidth * ENET_PEER_PACKET_THROTTLE_SCALE) / dataTotal; - } - - for (peer = host->peers; peer < &host->peers[host->peerCount]; ++peer) { - enet_uint32 peerBandwidth; - - if ((peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) || - peer->incomingBandwidth == 0 || - peer->outgoingBandwidthThrottleEpoch == timeCurrent - ) { - continue; - } - - peerBandwidth = (peer->incomingBandwidth * elapsedTime) / 1000; - if ((throttle * peer->outgoingDataTotal) / ENET_PEER_PACKET_THROTTLE_SCALE <= peerBandwidth) { - continue; - } - - peer->packetThrottleLimit = (peerBandwidth * ENET_PEER_PACKET_THROTTLE_SCALE) / peer->outgoingDataTotal; - - if (peer->packetThrottleLimit == 0) { - peer->packetThrottleLimit = 1; - } - - if (peer->packetThrottle > peer->packetThrottleLimit) { - peer->packetThrottle = peer->packetThrottleLimit; - } - - peer->outgoingBandwidthThrottleEpoch = timeCurrent; - - peer->incomingDataTotal = 0; - peer->outgoingDataTotal = 0; - - needsAdjustment = 1; - --peersRemaining; - bandwidth -= peerBandwidth; - dataTotal -= peerBandwidth; - } - } - - if (peersRemaining > 0) { - if (dataTotal <= bandwidth) { - throttle = ENET_PEER_PACKET_THROTTLE_SCALE; - } else { - throttle = (bandwidth * ENET_PEER_PACKET_THROTTLE_SCALE) / dataTotal; - } - - for (peer = host->peers; - peer < &host->peers[host->peerCount]; - ++peer) - { - if ((peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) || peer->outgoingBandwidthThrottleEpoch == timeCurrent) { - continue; - } - - peer->packetThrottleLimit = throttle; - - if (peer->packetThrottle > peer->packetThrottleLimit) { - peer->packetThrottle = peer->packetThrottleLimit; - } - - peer->incomingDataTotal = 0; - peer->outgoingDataTotal = 0; - } - } - - if (host->recalculateBandwidthLimits) { - host->recalculateBandwidthLimits = 0; - - peersRemaining = (enet_uint32) host->connectedPeers; - bandwidth = host->incomingBandwidth; - needsAdjustment = 1; - - if (bandwidth == 0) { - bandwidthLimit = 0; - } else { - while (peersRemaining > 0 && needsAdjustment != 0) { - needsAdjustment = 0; - bandwidthLimit = bandwidth / peersRemaining; - - for (peer = host->peers; peer < &host->peers[host->peerCount]; ++peer) { - if ((peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) || - peer->incomingBandwidthThrottleEpoch == timeCurrent - ) { - continue; - } - - if (peer->outgoingBandwidth > 0 && peer->outgoingBandwidth >= bandwidthLimit) { - continue; - } - - peer->incomingBandwidthThrottleEpoch = timeCurrent; - - needsAdjustment = 1; - --peersRemaining; - bandwidth -= peer->outgoingBandwidth; - } - } - } - - for (peer = host->peers; peer < &host->peers[host->peerCount]; ++peer) { - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - continue; - } - - command.header.command = ENET_PROTOCOL_COMMAND_BANDWIDTH_LIMIT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - command.bandwidthLimit.outgoingBandwidth = ENET_HOST_TO_NET_32(host->outgoingBandwidth); - - if (peer->incomingBandwidthThrottleEpoch == timeCurrent) { - command.bandwidthLimit.incomingBandwidth = ENET_HOST_TO_NET_32(peer->outgoingBandwidth); - } else { - command.bandwidthLimit.incomingBandwidth = ENET_HOST_TO_NET_32(bandwidthLimit); - } - - enet_peer_queue_outgoing_command(peer, &command, NULL, 0, 0); - } - } - } /* enet_host_bandwidth_throttle */ - -// =======================================================================// -// ! -// ! Time -// ! -// =======================================================================// - - #ifdef _WIN32 - static LARGE_INTEGER getFILETIMEoffset() { - SYSTEMTIME s; - FILETIME f; - LARGE_INTEGER t; - - s.wYear = 1970; - s.wMonth = 1; - s.wDay = 1; - s.wHour = 0; - s.wMinute = 0; - s.wSecond = 0; - s.wMilliseconds = 0; - SystemTimeToFileTime(&s, &f); - t.QuadPart = f.dwHighDateTime; - t.QuadPart <<= 32; - t.QuadPart |= f.dwLowDateTime; - return (t); - } - int clock_gettime(int X, struct timespec *tv) { - (void)X; - LARGE_INTEGER t; - FILETIME f; - double microseconds; - static LARGE_INTEGER offset; - static double frequencyToMicroseconds; - static int initialized = 0; - static BOOL usePerformanceCounter = 0; - - if (!initialized) { - LARGE_INTEGER performanceFrequency; - initialized = 1; - usePerformanceCounter = QueryPerformanceFrequency(&performanceFrequency); - if (usePerformanceCounter) { - QueryPerformanceCounter(&offset); - frequencyToMicroseconds = (double)performanceFrequency.QuadPart / 1000000.; - } else { - offset = getFILETIMEoffset(); - frequencyToMicroseconds = 10.; - } - } - if (usePerformanceCounter) { - QueryPerformanceCounter(&t); - } else { - GetSystemTimeAsFileTime(&f); - t.QuadPart = f.dwHighDateTime; - t.QuadPart <<= 32; - t.QuadPart |= f.dwLowDateTime; - } - - t.QuadPart -= offset.QuadPart; - microseconds = (double)t.QuadPart / frequencyToMicroseconds; - t.QuadPart = (LONGLONG)microseconds; - tv->tv_sec = (long)(t.QuadPart / 1000000); - tv->tv_nsec = t.QuadPart % 1000000 * 1000; - return (0); - } - #elif __APPLE__ && __MAC_OS_X_VERSION_MIN_REQUIRED < 101200 - #define CLOCK_MONOTONIC 0 - - int clock_gettime(int X, struct timespec *ts) { - clock_serv_t cclock; - mach_timespec_t mts; - - host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &cclock); - clock_get_time(cclock, &mts); - mach_port_deallocate(mach_task_self(), cclock); - - ts->tv_sec = mts.tv_sec; - ts->tv_nsec = mts.tv_nsec; - - return 0; - } - #endif - - enet_uint32 enet_time_get() { - // TODO enet uses 32 bit timestamps. We should modify it to use - // 64 bit timestamps, but this is not trivial since we'd end up - // changing half the structs in enet. For now, retain 32 bits, but - // use an offset so we don't run out of bits. Basically, the first - // call of enet_time_get() will always return 1, and follow-up calls - // indicate elapsed time since the first call. - // - // Note that we don't want to return 0 from the first call, in case - // some part of enet uses 0 as a special value (meaning time not set - // for example). - static uint64_t start_time_ns = 0; - - struct timespec ts; - #if defined(CLOCK_MONOTONIC_RAW) - clock_gettime(CLOCK_MONOTONIC_RAW, &ts); - #else - clock_gettime(CLOCK_MONOTONIC, &ts); - #endif - - static const uint64_t ns_in_s = 1000 * 1000 * 1000; - static const uint64_t ns_in_ms = 1000 * 1000; - uint64_t current_time_ns = ts.tv_nsec + (uint64_t)ts.tv_sec * ns_in_s; - - // Most of the time we just want to atomically read the start time. We - // could just use a single CAS instruction instead of this if, but it - // would be slower in the average case. - // - // Note that statics are auto-initialized to zero, and starting a thread - // implies a memory barrier. So we know that whatever thread calls this, - // it correctly sees the start_time_ns as 0 initially. - uint64_t offset_ns = ENET_ATOMIC_READ(&start_time_ns); - if (offset_ns == 0) { - // We still need to CAS, since two different threads can get here - // at the same time. - // - // We assume that current_time_ns is > 1ms. - // - // Set the value of the start_time_ns, such that the first timestamp - // is at 1ms. This ensures 0 remains a special value. - uint64_t want_value = current_time_ns - 1 * ns_in_ms; - uint64_t old_value = ENET_ATOMIC_CAS(&start_time_ns, 0, want_value); - offset_ns = old_value == 0 ? want_value : old_value; - } - - uint64_t result_in_ns = current_time_ns - offset_ns; - return (enet_uint32)(result_in_ns / ns_in_ms); - } - - void enet_inaddr_map4to6(struct in_addr in, struct in6_addr *out) - { - if (in.s_addr == 0x00000000) { /* 0.0.0.0 */ - *out = enet_v6_anyaddr; - } else if (in.s_addr == 0xFFFFFFFF) { /* 255.255.255.255 */ - *out = enet_v6_noaddr; - } else { - *out = enet_v4_anyaddr; - out->s6_addr[10] = 0xFF; - out->s6_addr[11] = 0xFF; - out->s6_addr[12] = ((uint8_t *)&in.s_addr)[0]; - out->s6_addr[13] = ((uint8_t *)&in.s_addr)[1]; - out->s6_addr[14] = ((uint8_t *)&in.s_addr)[2]; - out->s6_addr[15] = ((uint8_t *)&in.s_addr)[3]; - } - } - void enet_inaddr_map6to4(const struct in6_addr *in, struct in_addr *out) - { - memset(out, 0, sizeof(struct in_addr)); - ((uint8_t *)&out->s_addr)[0] = in->s6_addr[12]; - ((uint8_t *)&out->s_addr)[1] = in->s6_addr[13]; - ((uint8_t *)&out->s_addr)[2] = in->s6_addr[14]; - ((uint8_t *)&out->s_addr)[3] = in->s6_addr[15]; - } - - int enet_in6addr_lookup_host(const char *name, bool nodns, ENetAddress *out) { - struct addrinfo hints, *resultList = NULL, *result = NULL; - - memset(&hints, 0, sizeof(hints)); - hints.ai_family = AF_UNSPEC; - - if (nodns) - { - hints.ai_flags = AI_NUMERICHOST; /* prevent actual DNS lookups! */ - } - - if (getaddrinfo(name, NULL, &hints, &resultList) != 0) { - freeaddrinfo(resultList); - return -1; - } - - for (result = resultList; result != NULL; result = result->ai_next) { - if (result->ai_addr != NULL) { - if (result->ai_family == AF_INET || (result->ai_family == AF_UNSPEC && result->ai_addrlen == sizeof(struct sockaddr_in))) { - enet_inaddr_map4to6(((struct sockaddr_in*)result->ai_addr)->sin_addr, &out->host); - out->sin6_scope_id = 0; - freeaddrinfo(resultList); - return 0; - - } else if (result->ai_family == AF_INET6 || (result->ai_family == AF_UNSPEC && result->ai_addrlen == sizeof(struct sockaddr_in6))) { - memcpy(&out->host, &((struct sockaddr_in6*)result->ai_addr)->sin6_addr, sizeof(struct in6_addr)); - out->sin6_scope_id = (enet_uint16) ((struct sockaddr_in6*)result->ai_addr)->sin6_scope_id; - freeaddrinfo(resultList); - return 0; - } - } - } - freeaddrinfo(resultList); - return -1; - } - - int enet_address_set_host_ip_new(ENetAddress *address, const char *name) { - return enet_in6addr_lookup_host(name, true, address); - } - - int enet_address_set_host_new(ENetAddress *address, const char *name) { - return enet_in6addr_lookup_host(name, false, address); - } - - int enet_address_get_host_ip_new(const ENetAddress *address, char *name, size_t nameLength) { - if (IN6_IS_ADDR_V4MAPPED(&address->host)) { - struct in_addr buf; - enet_inaddr_map6to4(&address->host, &buf); - - if (inet_ntop(AF_INET, &buf, name, nameLength) == NULL) { - return -1; - } - } - else { - if (inet_ntop(AF_INET6, (void*)&address->host, name, nameLength) == NULL) { - return -1; - } - } - - return 0; - } /* enet_address_get_host_ip_new */ - - int enet_address_get_host_new(const ENetAddress *address, char *name, size_t nameLength) { - struct sockaddr_in6 sin; - memset(&sin, 0, sizeof(struct sockaddr_in6)); - - int err; - - - sin.sin6_family = AF_INET6; - sin.sin6_port = ENET_HOST_TO_NET_16 (address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - - err = getnameinfo((struct sockaddr *) &sin, sizeof(sin), name, nameLength, NULL, 0, NI_NAMEREQD); - if (!err) { - if (name != NULL && nameLength > 0 && !memchr(name, '\0', nameLength)) { - return -1; - } - return 0; - } - if (err != EAI_NONAME) { - return -1; - } - - return enet_address_get_host_ip_new(address, name, nameLength); - } /* enet_address_get_host_new */ - -// =======================================================================// -// ! -// ! Platform Specific (Unix) -// ! -// =======================================================================// - - #ifndef _WIN32 - - #if defined(__MINGW32__) && defined(ENET_MINGW_COMPAT) - // inet_ntop/inet_pton for MinGW from http://mingw-users.1079350.n2.nabble.com/IPv6-getaddrinfo-amp-inet-ntop-td5891996.html - const char *inet_ntop(int af, const void *src, char *dst, socklen_t cnt) { - if (af == AF_INET) { - struct sockaddr_in in; - memset(&in, 0, sizeof(in)); - in.sin_family = AF_INET; - memcpy(&in.sin_addr, src, sizeof(struct in_addr)); - getnameinfo((struct sockaddr *)&in, sizeof(struct sockaddr_in), dst, cnt, NULL, 0, NI_NUMERICHOST); - return dst; - } - else if (af == AF_INET6) { - struct sockaddr_in6 in; - memset(&in, 0, sizeof(in)); - in.sin6_family = AF_INET6; - memcpy(&in.sin6_addr, src, sizeof(struct in_addr6)); - getnameinfo((struct sockaddr *)&in, sizeof(struct sockaddr_in6), dst, cnt, NULL, 0, NI_NUMERICHOST); - return dst; - } - - return NULL; - } - - #define NS_INADDRSZ 4 - #define NS_IN6ADDRSZ 16 - #define NS_INT16SZ 2 - - int inet_pton4(const char *src, char *dst) { - uint8_t tmp[NS_INADDRSZ], *tp; - - int saw_digit = 0; - int octets = 0; - *(tp = tmp) = 0; - - int ch; - while ((ch = *src++) != '\0') - { - if (ch >= '0' && ch <= '9') - { - uint32_t n = *tp * 10 + (ch - '0'); - - if (saw_digit && *tp == 0) - return 0; - - if (n > 255) - return 0; - - *tp = n; - if (!saw_digit) - { - if (++octets > 4) - return 0; - saw_digit = 1; - } - } - else if (ch == '.' && saw_digit) - { - if (octets == 4) - return 0; - *++tp = 0; - saw_digit = 0; - } - else - return 0; - } - if (octets < 4) - return 0; - - memcpy(dst, tmp, NS_INADDRSZ); - - return 1; - } - - int inet_pton6(const char *src, char *dst) { - static const char xdigits[] = "0123456789abcdef"; - uint8_t tmp[NS_IN6ADDRSZ]; - - uint8_t *tp = (uint8_t*) memset(tmp, '\0', NS_IN6ADDRSZ); - uint8_t *endp = tp + NS_IN6ADDRSZ; - uint8_t *colonp = NULL; - - /* Leading :: requires some special handling. */ - if (*src == ':') - { - if (*++src != ':') - return 0; - } - - const char *curtok = src; - int saw_xdigit = 0; - uint32_t val = 0; - int ch; - while ((ch = tolower(*src++)) != '\0') - { - const char *pch = strchr(xdigits, ch); - if (pch != NULL) - { - val <<= 4; - val |= (pch - xdigits); - if (val > 0xffff) - return 0; - saw_xdigit = 1; - continue; - } - if (ch == ':') - { - curtok = src; - if (!saw_xdigit) - { - if (colonp) - return 0; - colonp = tp; - continue; - } - else if (*src == '\0') - { - return 0; - } - if (tp + NS_INT16SZ > endp) - return 0; - *tp++ = (uint8_t) (val >> 8) & 0xff; - *tp++ = (uint8_t) val & 0xff; - saw_xdigit = 0; - val = 0; - continue; - } - if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) && - inet_pton4(curtok, (char*) tp) > 0) - { - tp += NS_INADDRSZ; - saw_xdigit = 0; - break; /* '\0' was seen by inet_pton4(). */ - } - return 0; - } - if (saw_xdigit) - { - if (tp + NS_INT16SZ > endp) - return 0; - *tp++ = (uint8_t) (val >> 8) & 0xff; - *tp++ = (uint8_t) val & 0xff; - } - if (colonp != NULL) - { - /* - * Since some memmove()'s erroneously fail to handle - * overlapping regions, we'll do the shift by hand. - */ - const int n = tp - colonp; - - if (tp == endp) - return 0; - - for (int i = 1; i <= n; i++) - { - endp[-i] = colonp[n - i]; - colonp[n - i] = 0; - } - tp = endp; - } - if (tp != endp) - return 0; - - memcpy(dst, tmp, NS_IN6ADDRSZ); - - return 1; - } - - - int inet_pton(int af, const char *src, struct in6_addr *dst) { - switch (af) - { - case AF_INET: - return inet_pton4(src, (char *)dst); - case AF_INET6: - return inet_pton6(src, (char *)dst); - default: - return -1; - } - } - #endif // __MINGW__ - - int enet_initialize(void) { - return 0; - } - - void enet_deinitialize(void) {} - - enet_uint64 enet_host_random_seed(void) { - return (enet_uint64) time(NULL); - } - - int enet_address_set_host_ip_old(ENetAddress *address, const char *name) { - if (!inet_pton(AF_INET6, name, &address->host)) { - return -1; - } - - return 0; - } - - int enet_address_set_host_old(ENetAddress *address, const char *name) { - struct addrinfo hints, *resultList = NULL, *result = NULL; - - memset(&hints, 0, sizeof(hints)); - hints.ai_family = AF_UNSPEC; - - if (getaddrinfo(name, NULL, &hints, &resultList) != 0) { - return -1; - } - - for (result = resultList; result != NULL; result = result->ai_next) { - if (result->ai_addr != NULL && result->ai_addrlen >= sizeof(struct sockaddr_in)) { - if (result->ai_family == AF_INET) { - struct sockaddr_in * sin = (struct sockaddr_in *) result->ai_addr; - - ((uint32_t *)&address->host.s6_addr)[0] = 0; - ((uint32_t *)&address->host.s6_addr)[1] = 0; - ((uint32_t *)&address->host.s6_addr)[2] = htonl(0xffff); - ((uint32_t *)&address->host.s6_addr)[3] = sin->sin_addr.s_addr; - - freeaddrinfo(resultList); - return 0; - } - else if(result->ai_family == AF_INET6) { - struct sockaddr_in6 * sin = (struct sockaddr_in6 *)result->ai_addr; - - address->host = sin->sin6_addr; - address->sin6_scope_id = sin->sin6_scope_id; - - freeaddrinfo(resultList); - return 0; - } - } - } - freeaddrinfo(resultList); - - return enet_address_set_host_ip(address, name); - } /* enet_address_set_host_old */ - - int enet_address_get_host_ip_old(const ENetAddress *address, char *name, size_t nameLength) { - if (inet_ntop(AF_INET6, &address->host, name, nameLength) == NULL) { - return -1; - } - - return 0; - } - - int enet_address_get_host_old(const ENetAddress *address, char *name, size_t nameLength) { - struct sockaddr_in6 sin; - int err; - memset(&sin, 0, sizeof(struct sockaddr_in6)); - sin.sin6_family = AF_INET6; - sin.sin6_port = ENET_HOST_TO_NET_16 (address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - err = getnameinfo((struct sockaddr *) &sin, sizeof(sin), name, nameLength, NULL, 0, NI_NAMEREQD); - if (!err) { - if (name != NULL && nameLength > 0 && !memchr(name, '\0', nameLength)) { - return -1; - } - return 0; - } - if (err != EAI_NONAME) { - return -1; - } - return enet_address_get_host_ip(address, name, nameLength); - } /* enet_address_get_host_old */ - - int enet_socket_bind(ENetSocket socket, const ENetAddress *address) { - struct sockaddr_in6 sin; - memset(&sin, 0, sizeof(struct sockaddr_in6)); - sin.sin6_family = AF_INET6; - - if (address != NULL) { - sin.sin6_port = ENET_HOST_TO_NET_16(address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - } else { - sin.sin6_port = 0; - sin.sin6_addr = ENET_HOST_ANY; - sin.sin6_scope_id = 0; - } - - return bind(socket, (struct sockaddr *)&sin, sizeof(struct sockaddr_in6)); - } - - int enet_socket_get_address(ENetSocket socket, ENetAddress *address) { - struct sockaddr_in6 sin; - socklen_t sinLength = sizeof(struct sockaddr_in6); - - if (getsockname(socket, (struct sockaddr *) &sin, &sinLength) == -1) { - return -1; - } - - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16(sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - - return 0; - } - - int enet_socket_listen(ENetSocket socket, int backlog) { - return listen(socket, backlog < 0 ? SOMAXCONN : backlog); - } - - ENetSocket enet_socket_create(ENetSocketType type) { - return socket(PF_INET6, (int)type == ENET_SOCKET_TYPE_DATAGRAM ? SOCK_DGRAM : SOCK_STREAM, 0); - } - - int enet_socket_set_option(ENetSocket socket, ENetSocketOption option, int value) { - int result = -1; - - switch (option) { - case ENET_SOCKOPT_NONBLOCK: - result = fcntl(socket, F_SETFL, (value ? O_NONBLOCK : 0) | (fcntl(socket, F_GETFL) & ~O_NONBLOCK)); - break; - - case ENET_SOCKOPT_BROADCAST: - result = setsockopt(socket, SOL_SOCKET, SO_BROADCAST, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_REUSEADDR: - result = setsockopt(socket, SOL_SOCKET, SO_REUSEADDR, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_RCVBUF: - result = setsockopt(socket, SOL_SOCKET, SO_RCVBUF, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_SNDBUF: - result = setsockopt(socket, SOL_SOCKET, SO_SNDBUF, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_RCVTIMEO: { - struct timeval timeVal; - timeVal.tv_sec = value / 1000; - timeVal.tv_usec = (value % 1000) * 1000; - result = setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeVal, sizeof(struct timeval)); - break; - } - - case ENET_SOCKOPT_SNDTIMEO: { - struct timeval timeVal; - timeVal.tv_sec = value / 1000; - timeVal.tv_usec = (value % 1000) * 1000; - result = setsockopt(socket, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeVal, sizeof(struct timeval)); - break; - } - - case ENET_SOCKOPT_NODELAY: - result = setsockopt(socket, IPPROTO_TCP, TCP_NODELAY, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_IPV6_V6ONLY: - result = setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&value, sizeof(int)); - break; - - default: - break; - } - return result == -1 ? -1 : 0; - } /* enet_socket_set_option */ - - int enet_socket_get_option(ENetSocket socket, ENetSocketOption option, int *value) { - int result = -1; - socklen_t len; - - switch (option) { - case ENET_SOCKOPT_ERROR: - len = sizeof(int); - result = getsockopt(socket, SOL_SOCKET, SO_ERROR, value, &len); - break; - - default: - break; - } - return result == -1 ? -1 : 0; - } - - int enet_socket_connect(ENetSocket socket, const ENetAddress *address) { - struct sockaddr_in6 sin; - int result; - - memset(&sin, 0, sizeof(struct sockaddr_in6)); - - sin.sin6_family = AF_INET6; - sin.sin6_port = ENET_HOST_TO_NET_16(address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - - result = connect(socket, (struct sockaddr *)&sin, sizeof(struct sockaddr_in6)); - if (result == -1 && errno == EINPROGRESS) { - return 0; - } - - return result; - } - - ENetSocket enet_socket_accept(ENetSocket socket, ENetAddress *address) { - int result; - struct sockaddr_in6 sin; - socklen_t sinLength = sizeof(struct sockaddr_in6); - - result = accept(socket,address != NULL ? (struct sockaddr *) &sin : NULL, address != NULL ? &sinLength : NULL); - - if (result == -1) { - return ENET_SOCKET_NULL; - } - - if (address != NULL) { - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16 (sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - } - - return result; - } - - int enet_socket_shutdown(ENetSocket socket, ENetSocketShutdown how) { - return shutdown(socket, (int) how); - } - - void enet_socket_destroy(ENetSocket socket) { - if (socket != -1) { - close(socket); - } - } - - int enet_socket_send(ENetSocket socket, const ENetAddress *address, const ENetBuffer *buffers, size_t bufferCount) { - struct msghdr msgHdr; - struct sockaddr_in6 sin; - int sentLength; - - memset(&msgHdr, 0, sizeof(struct msghdr)); - - if (address != NULL) { - memset(&sin, 0, sizeof(struct sockaddr_in6)); - - sin.sin6_family = AF_INET6; - sin.sin6_port = ENET_HOST_TO_NET_16(address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - - msgHdr.msg_name = &sin; - msgHdr.msg_namelen = sizeof(struct sockaddr_in6); - } - - msgHdr.msg_iov = (struct iovec *) buffers; - msgHdr.msg_iovlen = bufferCount; - - sentLength = sendmsg(socket, &msgHdr, MSG_NOSIGNAL); - - if (sentLength == -1) { - if (errno == EWOULDBLOCK) { - return 0; - } - - return -1; - } - - return sentLength; - } /* enet_socket_send */ - - int enet_socket_receive(ENetSocket socket, ENetAddress *address, ENetBuffer *buffers, size_t bufferCount) { - struct msghdr msgHdr; - struct sockaddr_in6 sin; - int recvLength; - - memset(&msgHdr, 0, sizeof(struct msghdr)); - - if (address != NULL) { - msgHdr.msg_name = &sin; - msgHdr.msg_namelen = sizeof(struct sockaddr_in6); - } - - msgHdr.msg_iov = (struct iovec *) buffers; - msgHdr.msg_iovlen = bufferCount; - - recvLength = recvmsg(socket, &msgHdr, MSG_NOSIGNAL); - - if (recvLength == -1) { - if (errno == EWOULDBLOCK) { - return 0; - } - - return -1; - } - - if (msgHdr.msg_flags & MSG_TRUNC) { - return -1; - } - - if (address != NULL) { - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16(sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - } - - return recvLength; - } /* enet_socket_receive */ - - int enet_socketset_select(ENetSocket maxSocket, ENetSocketSet *readSet, ENetSocketSet *writeSet, enet_uint32 timeout) { - struct timeval timeVal; - - timeVal.tv_sec = timeout / 1000; - timeVal.tv_usec = (timeout % 1000) * 1000; - - return select(maxSocket + 1, readSet, writeSet, NULL, &timeVal); - } - - int enet_socket_wait(ENetSocket socket, enet_uint32 *condition, enet_uint64 timeout) { - struct pollfd pollSocket; - int pollCount; - - pollSocket.fd = socket; - pollSocket.events = 0; - - if (*condition & ENET_SOCKET_WAIT_SEND) { - pollSocket.events |= POLLOUT; - } - - if (*condition & ENET_SOCKET_WAIT_RECEIVE) { - pollSocket.events |= POLLIN; - } - - pollCount = poll(&pollSocket, 1, timeout); - - if (pollCount < 0) { - if (errno == EINTR && *condition & ENET_SOCKET_WAIT_INTERRUPT) { - *condition = ENET_SOCKET_WAIT_INTERRUPT; - - return 0; - } - - return -1; - } - - *condition = ENET_SOCKET_WAIT_NONE; - - if (pollCount == 0) { - return 0; - } - - if (pollSocket.revents & POLLOUT) { - *condition |= ENET_SOCKET_WAIT_SEND; - } - - if (pollSocket.revents & POLLIN) { - *condition |= ENET_SOCKET_WAIT_RECEIVE; - } - - return 0; - } /* enet_socket_wait */ - - #endif // !_WIN32 - - -// =======================================================================// -// ! -// ! Platform Specific (Win) -// ! -// =======================================================================// - - #ifdef _WIN32 - - int enet_initialize(void) { - WORD versionRequested = MAKEWORD(1, 1); - WSADATA wsaData; - - if (WSAStartup(versionRequested, &wsaData)) { - return -1; - } - - if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) { - WSACleanup(); - return -1; - } - - timeBeginPeriod(1); - return 0; - } - - void enet_deinitialize(void) { - timeEndPeriod(1); - WSACleanup(); - } - - enet_uint64 enet_host_random_seed(void) { - return (enet_uint64) timeGetTime(); - } - - int enet_address_set_host_ip_old(ENetAddress *address, const char *name) { - enet_uint8 vals[4] = { 0, 0, 0, 0 }; - int i; - - for (i = 0; i < 4; ++i) { - const char *next = name + 1; - if (*name != '0') { - long val = strtol(name, (char **) &next, 10); - if (val < 0 || val > 255 || next == name || next - name > 3) { - return -1; - } - vals[i] = (enet_uint8) val; - } - - if (*next != (i < 3 ? '.' : '\0')) { - return -1; - } - name = next + 1; - } - - memcpy(&address->host, vals, sizeof(enet_uint32)); - return 0; - } - - int enet_address_set_host_old(ENetAddress *address, const char *name) { - struct hostent *hostEntry = NULL; - hostEntry = gethostbyname(name); - - if (hostEntry == NULL || hostEntry->h_addrtype != AF_INET) { - if (!inet_pton(AF_INET6, name, &address->host)) { - return -1; - } - - return 0; - } - - ((enet_uint32 *)&address->host.s6_addr)[0] = 0; - ((enet_uint32 *)&address->host.s6_addr)[1] = 0; - ((enet_uint32 *)&address->host.s6_addr)[2] = htonl(0xffff); - ((enet_uint32 *)&address->host.s6_addr)[3] = *(enet_uint32 *)hostEntry->h_addr_list[0]; - - return 0; - } - - int enet_address_get_host_ip_old(const ENetAddress *address, char *name, size_t nameLength) { - if (inet_ntop(AF_INET6, (PVOID)&address->host, name, nameLength) == NULL) { - return -1; - } - - return 0; - } - - int enet_address_get_host_old(const ENetAddress *address, char *name, size_t nameLength) { - struct in6_addr in; - struct hostent *hostEntry = NULL; - in = address->host; - hostEntry = gethostbyaddr((char *)&in, sizeof(struct in6_addr), AF_INET6); - if (hostEntry == NULL) { - return enet_address_get_host_ip(address, name, nameLength); - } else { - size_t hostLen = strlen(hostEntry->h_name); - if (hostLen >= nameLength) { - return -1; - } - memcpy(name, hostEntry->h_name, hostLen + 1); - } - return 0; - } - - int enet_socket_bind(ENetSocket socket, const ENetAddress *address) { - struct sockaddr_in6 sin; - memset(&sin, 0, sizeof(struct sockaddr_in6)); - sin.sin6_family = AF_INET6; - - if (address != NULL) { - sin.sin6_port = ENET_HOST_TO_NET_16 (address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - } else { - sin.sin6_port = 0; - sin.sin6_addr = in6addr_any; - sin.sin6_scope_id = 0; - } - - return bind(socket, (struct sockaddr *) &sin, sizeof(struct sockaddr_in6)) == SOCKET_ERROR ? -1 : 0; - } - - int enet_socket_get_address(ENetSocket socket, ENetAddress *address) { - struct sockaddr_in6 sin; - int sinLength = sizeof(struct sockaddr_in6); - - if (getsockname(socket, (struct sockaddr *) &sin, &sinLength) == -1) { - return -1; - } - - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16(sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - - return 0; - } - - int enet_socket_listen(ENetSocket socket, int backlog) { - return listen(socket, backlog < 0 ? SOMAXCONN : backlog) == SOCKET_ERROR ? -1 : 0; - } - - ENetSocket enet_socket_create(ENetSocketType type) { - return socket(PF_INET6, type == ENET_SOCKET_TYPE_DATAGRAM ? SOCK_DGRAM : SOCK_STREAM, 0); - } - - int enet_socket_set_option(ENetSocket socket, ENetSocketOption option, int value) { - int result = SOCKET_ERROR; - - switch (option) { - case ENET_SOCKOPT_NONBLOCK: { - u_long nonBlocking = (u_long) value; - result = ioctlsocket(socket, FIONBIO, &nonBlocking); - break; - } - - case ENET_SOCKOPT_BROADCAST: - result = setsockopt(socket, SOL_SOCKET, SO_BROADCAST, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_REUSEADDR: - result = setsockopt(socket, SOL_SOCKET, SO_REUSEADDR, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_RCVBUF: - result = setsockopt(socket, SOL_SOCKET, SO_RCVBUF, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_SNDBUF: - result = setsockopt(socket, SOL_SOCKET, SO_SNDBUF, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_RCVTIMEO: - result = setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_SNDTIMEO: - result = setsockopt(socket, SOL_SOCKET, SO_SNDTIMEO, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_NODELAY: - result = setsockopt(socket, IPPROTO_TCP, TCP_NODELAY, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_IPV6_V6ONLY: - result = setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&value, sizeof(int)); - break; - - default: - break; - } - return result == SOCKET_ERROR ? -1 : 0; - } /* enet_socket_set_option */ - - int enet_socket_get_option(ENetSocket socket, ENetSocketOption option, int *value) { - int result = SOCKET_ERROR, len; - - switch (option) { - case ENET_SOCKOPT_ERROR: - len = sizeof(int); - result = getsockopt(socket, SOL_SOCKET, SO_ERROR, (char *)value, &len); - break; - - default: - break; - } - return result == SOCKET_ERROR ? -1 : 0; - } - - int enet_socket_connect(ENetSocket socket, const ENetAddress *address) { - struct sockaddr_in6 sin; - int result; - - memset(&sin, 0, sizeof(struct sockaddr_in6)); - - sin.sin6_family = AF_INET6; - sin.sin6_port = ENET_HOST_TO_NET_16(address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - - result = connect(socket, (struct sockaddr *) &sin, sizeof(struct sockaddr_in6)); - if (result == SOCKET_ERROR && WSAGetLastError() != WSAEWOULDBLOCK) { - return -1; - } - - return 0; - } - - ENetSocket enet_socket_accept(ENetSocket socket, ENetAddress *address) { - SOCKET result; - struct sockaddr_in6 sin; - int sinLength = sizeof(struct sockaddr_in6); - - result = accept(socket, address != NULL ? (struct sockaddr *)&sin : NULL, address != NULL ? &sinLength : NULL); - - if (result == INVALID_SOCKET) { - return ENET_SOCKET_NULL; - } - - if (address != NULL) { - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16(sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - } - - return result; - } - - int enet_socket_shutdown(ENetSocket socket, ENetSocketShutdown how) { - return shutdown(socket, (int) how) == SOCKET_ERROR ? -1 : 0; - } - - void enet_socket_destroy(ENetSocket socket) { - if (socket != INVALID_SOCKET) { - closesocket(socket); - } - } - - int enet_socket_send(ENetSocket socket, const ENetAddress *address, const ENetBuffer *buffers, size_t bufferCount) { - struct sockaddr_in6 sin; - DWORD sentLength; - - if (address != NULL) { - memset(&sin, 0, sizeof(struct sockaddr_in6)); - - sin.sin6_family = AF_INET6; - sin.sin6_port = ENET_HOST_TO_NET_16(address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - } - - if (WSASendTo(socket, - (LPWSABUF) buffers, - (DWORD) bufferCount, - &sentLength, - 0, - address != NULL ? (struct sockaddr *) &sin : NULL, - address != NULL ? sizeof(struct sockaddr_in6) : 0, - NULL, - NULL) == SOCKET_ERROR - ) { - return (WSAGetLastError() == WSAEWOULDBLOCK) ? 0 : -1; - } - - return (int) sentLength; - } - - int enet_socket_receive(ENetSocket socket, ENetAddress *address, ENetBuffer *buffers, size_t bufferCount) { - INT sinLength = sizeof(struct sockaddr_in6); - DWORD flags = 0, recvLength; - struct sockaddr_in6 sin; - - if (WSARecvFrom(socket, - (LPWSABUF) buffers, - (DWORD) bufferCount, - &recvLength, - &flags, - address != NULL ? (struct sockaddr *) &sin : NULL, - address != NULL ? &sinLength : NULL, - NULL, - NULL) == SOCKET_ERROR - ) { - switch (WSAGetLastError()) { - case WSAEWOULDBLOCK: - case WSAECONNRESET: - return 0; - } - - return -1; - } - - if (flags & MSG_PARTIAL) { - return -1; - } - - if (address != NULL) { - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16(sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - } - - return (int) recvLength; - } /* enet_socket_receive */ - - int enet_socketset_select(ENetSocket maxSocket, ENetSocketSet *readSet, ENetSocketSet *writeSet, enet_uint32 timeout) { - struct timeval timeVal; - - timeVal.tv_sec = timeout / 1000; - timeVal.tv_usec = (timeout % 1000) * 1000; - - return select(maxSocket + 1, readSet, writeSet, NULL, &timeVal); - } - - int enet_socket_wait(ENetSocket socket, enet_uint32 *condition, enet_uint64 timeout) { - fd_set readSet, writeSet; - struct timeval timeVal; - int selectCount; - - timeVal.tv_sec = timeout / 1000; - timeVal.tv_usec = (timeout % 1000) * 1000; - - FD_ZERO(&readSet); - FD_ZERO(&writeSet); - - if (*condition & ENET_SOCKET_WAIT_SEND) { - FD_SET(socket, &writeSet); - } - - if (*condition & ENET_SOCKET_WAIT_RECEIVE) { - FD_SET(socket, &readSet); - } - - selectCount = select(socket + 1, &readSet, &writeSet, NULL, &timeVal); - - if (selectCount < 0) { - return -1; - } - - *condition = ENET_SOCKET_WAIT_NONE; - - if (selectCount == 0) { - return 0; - } - - if (FD_ISSET(socket, &writeSet)) { - *condition |= ENET_SOCKET_WAIT_SEND; - } - - if (FD_ISSET(socket, &readSet)) { - *condition |= ENET_SOCKET_WAIT_RECEIVE; - } - - return 0; - } /* enet_socket_wait */ - - #endif // _WIN32 - - -#ifdef __cplusplus -} -#endif - -#endif // ENET_IMPLEMENTATION -#endif // ENET_INCLUDE_H