From 9b738c359d42c984f5ac3987604d455ad0a4ed9f Mon Sep 17 00:00:00 2001
From: illyum <90023277+itzilly@users.noreply.github.com>
Date: Fri, 9 Aug 2024 02:44:08 -0600
Subject: [PATCH] Try to fix bpm desync

---
 main.cpp | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/main.cpp b/main.cpp
index 90bdc78..ec1032a 100644
--- a/main.cpp
+++ b/main.cpp
@@ -583,8 +583,6 @@ void renderImGui() {
 }
 
 void renderImGuiBpm() {
-    // Existing DMX Controller window code here...
-
     // New BPM Control Window
     ImGui::Begin("BPM Controller");
 
@@ -612,16 +610,22 @@ void renderImGuiBpm() {
 
     // Start/Stop button
     static bool is_playing_bpm = false;
-    static bool has_applied_offset = false;  // New variable to track if the offset has been applied
+    static bool has_applied_offset = false;
     static float lastBeatTime = 0.0f;
+    static float pauseTime = 0.0f;  // Store the time when BPM is paused
+
     if (ImGui::Button(is_playing_bpm ? "Stop" : "Start")) {
-        is_playing_bpm = !is_playing_bpm;
         if (is_playing_bpm) {
+            // Stop BPM playback
+            pauseTime = timeline_position;
+            is_playing_bpm = false;
+        }
+        else {
+            // Start BPM playback
             if (!is_playing && audioLoaded) {
                 if (!has_applied_offset) {
-                    // Apply offset only the first time playback starts
                     playback_start_time = static_cast<float>(glfwGetTime()) - timeline_position - offset_seconds;
-                    has_applied_offset = true;  // Mark that offset has been applied
+                    has_applied_offset = true;
                 }
                 else {
                     playback_start_time = static_cast<float>(glfwGetTime()) - timeline_position;
@@ -635,13 +639,13 @@ void renderImGuiBpm() {
                 ma_sound_start(&sound);
                 is_playing = true;
             }
-            lastBeatTime = timeline_position;
-        }
-        else {
-            if (audioLoaded) {
-                ma_sound_stop(&sound);
-                is_playing = false;
+
+            if (!is_playing_bpm) {
+                // Adjust lastBeatTime based on the pause time
+                lastBeatTime += (timeline_position - pauseTime);
             }
+
+            is_playing_bpm = true;
         }
     }