Fix playback

main.cpp

@@ -181,7 +181,6 @@ void setupImGui(GLFWwindow* window) {
     ImGui_ImplOpenGL3_Init("#version 130");
 }
 
-
 void renderImGui() {
     // Calculate time per beat based on BPM
     float beat_interval = 60.0f / bpm;
@@ -212,7 +211,7 @@ void renderImGui() {
     if (ImGui::Button(is_playing ? "Pause" : "Play")) {
         is_playing = !is_playing;
         if (is_playing) {
-            playback_start_time = static_cast<float>(glfwGetTime());
+            playback_start_time = static_cast<float>(glfwGetTime()) - timeline_position;
         }
     }
 
@@ -264,6 +263,38 @@ void renderImGui() {
     ImGui::EndChild();
     ImGui::PopID();
 
+    // Playback logic: Update timeline position based on playback time
+    if (is_playing) {
+        current_time = static_cast<float>(glfwGetTime()) - playback_start_time;
+        timeline_position = current_time;
+
+        // Trigger markers during playback
+        for (const auto& marker : markers) {
+            float marker_time = std::get<0>(marker) * timeline_duration;
+            if (current_time >= marker_time && current_time < marker_time + 0.025f) { // Slight tolerance for timing precision
+                buffer[0] = std::get<1>(marker);
+                buffer[1] = std::get<2>(marker);
+                buffer[2] = std::get<3>(marker);
+            }
+        }
+
+        // Stop playback when the timeline reaches the end
+        if (timeline_position >= timeline_duration) {
+            is_playing = false;
+            timeline_position = timeline_duration;
+        }
+    }
+
+    // Display added markers with their RGB values and time
+    for (const auto& marker : markers) {
+        float marker_time = std::get<0>(marker) * timeline_duration;
+        ImGui::Text("Marker at %.2f sec: R=%d, G=%d, B=%d",
+            marker_time,
+            std::get<1>(marker),
+            std::get<2>(marker),
+            std::get<3>(marker));
+    }
+
     // Place Zoom and Pan sliders below the timeline to avoid overlap
     ImGui::SliderFloat("Zoom", &zoom_level, 0.1f, 10.0f);
     ImGui::SliderFloat("Pan", &pan_offset, 0.0f, timeline_duration * zoom_level);