#pragma once #include <SDL2/SDL.h> class LoopTimer { public: static LoopTimer & getInstance(); void start(); void update(); double getDeltaTime() const; int getCurrentTime() const; void advanceFixedUpdate(); double getFixedDeltaTime() const; void setFPS(int FPS); int getFPS() const; double getGameScale(); void setGameScale(double); void enforceFrameRate(); double getLag() const; private: LoopTimer(); int FPS = 50; double gameScale = 1; double maximumDeltaTime = 0.25; double deltaTime; double frameTargetTime = FPS / 1000; double fixedDeltaTime = 0.01; double elapsedTime; double elapsedFixedTime; double time; uint64_t lastFrameTime; };