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38 lines
628 B
38 lines
628 B
#include "fpsmanager.h"
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namespace segl {
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FPSManager::FPSManager(int _fps) {
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setFPS(_fps);
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frames = 0;
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framerate = 0;
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lastticks = SDL_GetTicks();
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}
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void FPSManager::setFPS(int _fps) {
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if(_fps<1 || _fps > 500)
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return;
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tickrate = 1000.0f/(float)_fps;
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}
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void FPSManager::delay() {
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frames++;
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Uint32 now = SDL_GetTicks();
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Uint32 target = lastticks + (Uint32)(tickrate * (float)frames);
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if(now <= target) {
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SDL_Delay(target-now);
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} else {
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framerate = frames/((now-lastticks)/1000.0f);
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frames = 0;
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lastticks = SDL_GetTicks();
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}
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}
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float FPSManager::getFPS() {
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return framerate;
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}
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} // namespace segl
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