deltatime

src/game/gamemanager.cpp

@@ -6,21 +6,29 @@ namespace Game {
         using namespace std::chrono_literals;
         LOG("GameManager thread started");
 
+        mLastUpdate = clock::now(); // Get the update
+
         while (!stopToken.stop_requested()) {
+            clock::time_point now = clock::now();
+            std::chrono::duration<float> elapsedDt = now - mLastUpdate;
+            float seconds = elapsedDt.count();
+
             const int updatesPerSecond = std::max(1, mTargetUpdatesPerSecond);
             const auto frameDuration = std::chrono::duration<double>(1.0 / static_cast<double>(updatesPerSecond));
             const auto frameStart = std::chrono::steady_clock::now();
 
             try {
-                State::GameState::getInstance().withEntitiesLocked([](auto& entities) {
+                State::GameState::getInstance().withEntitiesLocked([seconds](auto& entities) {
                     for (auto& entity : entities) {
-                        entity->update();
+                        entity->update(seconds);
                     }
                 });
             } catch (const std::exception& e) {
                 ERROR("Exception in GameManager thread: " << e.what());
             }
 
+            mLastUpdate = now;
+
             const auto elapsed = std::chrono::steady_clock::now() - frameStart;
             const auto remaining = frameDuration - elapsed;
             if (remaining > 0s) {