C++ (Cpp) Clock::delta Examples

Example #1

File: GameManager.cpp Project: jbmorse/Dragonfly

void GameManager::run(int fr_time) {

	frame_time = fr_time;
	long int loop_time;
	Clock clock;
	WorldManager &worldmanager = WorldManager::getInstance();
	GraphicsManager &graphicsmanager = GraphicsManager::getInstance();
	InputManager &inputmanager = InputManager::getInstance();
	LogManager &logmanager = LogManager::getInstance();

	//MAIN GAME LOOP
	int i = 0;
	int sleep_time;
	logmanager.writeLog("GameManager::run: Game loop begins\n");
	while (!game_over) {
		clock.delta();
		inputmanager.getInput();
		EventStep s = EventStep();
		onEvent(&s);
		worldmanager.update();
		worldmanager.draw();
		graphicsmanager.swapBuffers();
		loop_time = clock.split();
		usleep((frame_time-loop_time)*1000);
	}
	logmanager.writeLog("GameManager::run: Game loop ends\n");
	shutDown();

}

Example #2

File: GameManager.cpp Project: jakehaas/K9-Engine-Console

void GameManager::run(int fr_time)
{
	if (this->isStarted())
	{
		frame_time = fr_time;

		Clock clock;
		long int loop_time;
		long int time_left;

		int i;

		LogManager &log_manager = LogManager::getInstance();
		InputManager &input_manager = InputManager::getInstance();
		GraphicsManager &graphics_manager = GraphicsManager::getInstance();
		WorldManager &world_manager = WorldManager::getInstance();

		while (game_over != true)
		{
			clock.delta();

			input_manager.getInput();

			EventStep es;
			Event e = es;
			onEvent(&e);

			world_manager.update();

			world_manager.draw();

			graphics_manager.swapBuffers();

			loop_time = clock.split();
			time_left = ((frame_time * 1000) - loop_time);

			if (time_left > 0)
			{
				usleep(time_left);
			}
			else
			{
				log_manager.writeLog(
						"The game is running too slow by %d microseconds!",
						-time_left);
			}
		}
	}
}