tooIbox/GameTimer.h at master · devtoi/tooIbox · GitHub

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#pragma once
#include <SDL2/SDL.h>
#include "UtilityLibraryDefine.h"

class GameTimer {
public:
	struct DeltaTimeInfo;

	UTILITY_API GameTimer();

	UTILITY_API void			Start	();
	UTILITY_API void			Stop	();
	UTILITY_API void			Pause	();
	UTILITY_API void			UnPause	();
	UTILITY_API void			Tick	();
	UTILITY_API double			Restart	();
	UTILITY_API float			GetTimeAsFloat	()	const;
	UTILITY_API double			GetTimeAsDouble ()	const;
	UTILITY_API float			GetDeltaAsFloat	() const;
	UTILITY_API double			GetDeltaAsDouble() const;
	UTILITY_API DeltaTimeInfo	GetDeltaTimeInfo() const;
	UTILITY_API Uint64			GetDeltaTicks	() const;
	UTILITY_API Uint64			GetTicksPerSec	() const;

	struct DeltaTimeInfo {
		Uint64	DeltaTicks;
		Uint64	TicksPerSec;
		float	DeltaTime;

		DeltaTimeInfo( Uint64 deltaTicks, Uint64 ticksPerSec, float deltaTime )
			: DeltaTicks( deltaTicks ), TicksPerSec( ticksPerSec ), DeltaTime( deltaTime ) {}
	};

private:
	Uint64	m_StartTicks, m_PausedTicks, m_LastCheckedTicks;
	Uint64	m_TicksPerSec;
	Uint64	m_DeltaTicks;
	bool	m_Started, m_Paused;
	double	m_DeltaTime;
};