Add current time marker

main.cpp

@@ -244,6 +244,10 @@ void renderImGui() {
         }
     }
 
+    // Draw the current timeline position marker
+    float position_marker = (timeline_position * zoom_level - pan_offset) / timeline_duration * timeline_width;
+    draw_list->AddLine(ImVec2(cursor_pos.x + position_marker, cursor_pos.y), ImVec2(cursor_pos.x + position_marker, cursor_pos.y + 100), IM_COL32(0, 0, 255, 255), 2.0f);
+
     // Allow adding markers with snapping to grid
     if (ImGui::Button("Add Marker")) {
         float snap_position = std::round(timeline_position / beat_interval) * beat_interval;