void __stdcall limitFps(){
DWORD curTick = GetTickCount();
if(curTick - lastTick < 1000/maxFPS){
        Sleep(1000/maxFPS - (curTick - lastTick));
        }
lastTick = curTick;
}

void _declspec(naked) EngineHook(){
    limitFps();
    _asm RET
}