Proper end of song

src/gameplay/beat_system.cpp

@@ -35,14 +35,14 @@ namespace phase_shifter::gameplay {
 	{
 		_acc += dt.value();
 		int  size = static_cast<int>(_time_stamps.size());
-		auto beat = _beat_index + 1 < size && _acc >= _time_stamps[_beat_index + 1];
+		auto beat = _beat_index + 1< size && _acc >= _time_stamps[_beat_index + 1];
 		int  beats_left = _state.beats_left;
 		if(beat) {
 			_beat_index++;
 			LOG(plog::debug) << "beat";
 
 			beats_left = size - 1 - _beat_index - _beat_offset;
-			if(beats_left <= 0) {
+			if(beats_left <= 0 || _beat_index + 1 >= size) {
 				_bus.send<Lose_msg>();
 			}
 		}

src/ui/hud_system.cpp

@@ -70,15 +70,17 @@ namespace phase_shifter::ui {
 			        //auto beats       = std::clamp(beat_state.beats_left, 0, 5);
 			ImGui::BeginChild("Line", {viewport.z, bar_height}, true);
 			ImDrawList* drawList = ImGui::GetWindowDrawList();
+			
 			while (beat_index < static_cast<int>(beats.size())) {
 				auto x_offset = (beats[beat_index] - _passed) * bar_speed;
 				auto height   = beat_bar_height * (1.f - glm::smoothstep(0.f, beat_bar_length, x_offset));
+				auto bar_color = beat_index < static_cast<int>(beats.size() * 0.8f) ? 0xFFFFFFFF : 0xFF0000FF;
 
 				ImVec2 p(cursor.x + viewport.z / 2 - x_offset, cursor.y - height / 2.f);
-				drawList->AddLine(p, {p.x, p.y + height}, 0xFFFFFFFF, 1);
+				drawList->AddLine(p, {p.x, p.y + height}, bar_color, 1);
 
 				p.x = cursor.x + viewport.z / 2 + x_offset;
-				drawList->AddLine(p, {p.x, p.y + height}, 0xFFFFFFFF, 1);
+				drawList->AddLine(p, {p.x, p.y + height}, bar_color, 1);
 
 				if(x_offset > beat_bar_length + 50) {
 					break;