void MainLoop(void) {
unsigned long l_start_time;
unsigned long l_elapsed_time;
unsigned long l_frame_time;
//事件处理
FrameworkEvent();
// Rendering
fps_count_rendering++; // Increase rendering FPS counter
l_start_time = Framework_GetTicks();
//绘制
renderSystem.RenderDisplay();
renderSystem.RenderFpsUpdate(Framework_GetTicks());
// Elapsed time calculation
l_elapsed_time=Framework_GetTicks()-l_start_time+remaining_time; // Elapsed time (we add also the previous remaining time)
l_frame_time=l_elapsed_time / msecxdframe; // Frames quantity we must cycle for physics
remaining_time=l_elapsed_time % msecxdframe; // Get the remaining time because we are working with integer values
// Physics
while (l_frame_time-->0) // Now do physics as many times as we need to match the elapsed time of the rendering phase
{
fps_count_physics++; // Increase physics FPS counter
}//while (l_frame_time-->0)
// Rendering and Physics FPS calculation
if ((Framework_GetTicks()-last_ticks)>=1000) // Every second
{
last_ticks = Framework_GetTicks(); // Save the current ticks to catch the next second
// Assings the current FPS count to the global variables
fps_physics=fps_count_physics;
fps_rendering=fps_count_rendering;
// Clear the local counters
fps_count_physics = 0;
fps_count_rendering = 0;
}
}
