calculateFPS();

float frameTicks = (float)(SDL_GetTicks() - _startTicks);

//Limit the FPS to the max FPS

if (1000.0f / _maxFPS > frameTicks) {

SDL_Delay((Uint32)(1000.0f / _maxFPS - frameTicks));

}

return _fps;

//The number of frames to average

static const int NUM_SAMPLES = 10;

//Stores all the frametimes for each frame that we will average

static float frameTimes[NUM_SAMPLES];

//The current frame we are on

static int currentFrame = 0;

//the ticks of the previous frame

static Uint32 prevTicks = SDL_GetTicks();

//Ticks for the current frame

Uint32 currentTicks = SDL_GetTicks();

//Calculate the number of ticks (ms) for this frame

_frameTime = (float)(currentTicks - prevTicks);

frameTimes[currentFrame % NUM_SAMPLES] = _frameTime;

//current ticks is now previous ticks

prevTicks = currentTicks;

//The number of frames to average

int count;

currentFrame++;

if (currentFrame < NUM_SAMPLES) {

count = currentFrame;

} else {

count = NUM_SAMPLES;

}

//Average all the frame times

float frameTimeAverage = 0;

for (int i = 0; i < count; i++) {

frameTimeAverage += frameTimes[i];

}

frameTimeAverage /= count;

//Calculate FPS

if (frameTimeAverage > 0) {

_fps = 1000.0f / frameTimeAverage;

} else {

_fps = 60.0f;

}