/* Copyright: (c) Kayne Ruse 2013
 * 
 * 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.
*/
#include "frame_rate.hpp"

#include <chrono>

typedef std::chrono::high_resolution_clock Clock;

static int frameCount = 0;
static int lastFrameRate = 0;
static Clock::time_point tick = Clock::now();

int clockFrameRate() {
	frameCount++;
	if (Clock::now() - tick >= std::chrono::duration<int>(1)) {
		lastFrameRate = frameCount;
		frameCount = 0;
		tick = Clock::now();
	}
	return lastFrameRate;
}

int getFrameRate() {
	return lastFrameRate;
}