mirror of
https://github.com/love2d/love.git
synced 2026-08-15 15:51:12 +02:00
Alex Szpakowski
91 lines
2.0 KiB
C++
91 lines
2.0 KiB
C++
/**
|
|
* Copyright (c) 2006-2013 LOVE Development Team
|
|
*
|
|
* This software is provided 'as-is', without any express or implied
|
|
* warranty. In no event will the authors be held liable for any damages
|
|
* arising from the use of this software.
|
|
*
|
|
* Permission is granted to anyone to use this software for any purpose,
|
|
* including commercial applications, and to alter it and redistribute it
|
|
* freely, subject to the following restrictions:
|
|
*
|
|
* 1. The origin of this software must not be misrepresented; you must not
|
|
* claim that you wrote the original software. If you use this software
|
|
* in a product, an acknowledgment in the product documentation would be
|
|
* appreciated but is not required.
|
|
* 2. Altered source versions must be plainly marked as such, and must not be
|
|
* misrepresented as being the original software.
|
|
* 3. This notice may not be removed or altered from any source distribution.
|
|
**/
|
|
|
|
#ifndef LOVE_TIMER_SDL_TIMER_H
|
|
#define LOVE_TIMER_SDL_TIMER_H
|
|
|
|
// SDL
|
|
#include <SDL.h>
|
|
|
|
// LOVE
|
|
#include <timer/Timer.h>
|
|
|
|
namespace love
|
|
{
|
|
namespace timer
|
|
{
|
|
namespace sdl
|
|
{
|
|
|
|
/**
|
|
* An SDL timer module. Can keep track of time between certain function
|
|
* calls, and provides access to a FPS metric which updates once each second.
|
|
**/
|
|
class Timer : public love::timer::Timer
|
|
{
|
|
public:
|
|
|
|
/**
|
|
* Constructor. Initializes the SDL/timer subsystem.
|
|
**/
|
|
Timer();
|
|
|
|
/**
|
|
* Destructor.
|
|
**/
|
|
virtual ~Timer();
|
|
|
|
const char *getName() const;
|
|
void step();
|
|
void sleep(double seconds) const;
|
|
double getDelta() const;
|
|
int getFPS() const;
|
|
double getAverageDelta() const;
|
|
double getTime() const;
|
|
double getMicroTime() const;
|
|
|
|
private:
|
|
|
|
// Frame delta vars.
|
|
double currTime;
|
|
double prevTime;
|
|
double prevFpsUpdate;
|
|
|
|
// Updated with a certain frequency.
|
|
int fps;
|
|
double averageDelta;
|
|
|
|
// The frequency by which to update the FPS.
|
|
double fpsUpdateFrequency;
|
|
|
|
// Frames since last FPS update.
|
|
int frames;
|
|
|
|
// The current timestep.
|
|
double dt;
|
|
|
|
}; // Timer
|
|
|
|
} // sdl
|
|
} // timer
|
|
} // love
|
|
|
|
#endif // LOVE_TIMER_SDL_TIMER_H
|