Cocos2dx 3.0 过渡篇（二十五）死不了的贪食蛇(触摸版)

//初始化游戏层
bool GameLayer::init()
{
	if ( !Layer::init() )
	{
		return false;
	}

	auto labhelp = LabelTTF::create("this is game","宋体",15);
	labhelp->setPosition(Point(0,340));
	this->addChild(labhelp);

	auto labback = LabelTTF::create("MainMenu","宋体",15);
	auto miback = MenuItemLabel::create(labback,[](Ref* sender)
	{
		Director::getInstance()->replaceScene(HelloWorld::createScene());
	});
	miback->setPosition(Point(360,200));


	//接受触摸事件
	auto listener = EventListenerTouchOneByOne::create();
	listener->onTouchBegan = CC_CALLBACK_2(HelloWorld::onTouchBegan, this);//指定触摸的回调函数    
	listener->onTouchMoved = CC_CALLBACK_2(HelloWorld::onTouchMoved, this);  
	listener->onTouchEnded = CC_CALLBACK_2(HelloWorld::onTouchEnded, this);
	_eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);//将listener放入事件委托中  

	//初始化蛇头坐标和食物的坐标
	sHead = new SnakeNode();
	sHead->row = rand()%10;
	sHead->col = rand()%10;


	//初始化食物的坐标
	sFood = new SnakeNode();
	sFood->row = rand()%10;
	sFood->col = rand()%10;

	//执行定时任务
	this->schedule(schedule_selector(GameLayer::logic01),0.5);
	return true;
}

bool GameLayer::onTouchBegan(Touch* touch, Event  *event)
{
	auto p = touch->getLocation();//获取当前的触点


	int nowrow;	//当前用户触摸的行
	nowrow = ((int)p.y)/32;
	int nowcol;	//当前用户触摸的列
	nowcol = ((int)p.x)/32;


	//如果触点的Y坐标相对于蛇头的Y坐标 大于 触点的X坐标相对于蛇头的X坐标，那么是上下移动，否则左右移动
	if( abs(nowrow - sHead->row) > abs(nowcol - sHead->col)) //上下移动
	{
		if(nowrow > sHead->row)
		{
			sHead->dir = DIR_DEF::UP;
		}
		else
		{
			sHead->dir=DIR_DEF::DOWN;
		}


	}
	else    //左右移动
	{
		if(nowcol > sHead->col)
		{
			sHead->dir=DIR_DEF::RIGHT;
		}
		else
		{
			sHead->dir=DIR_DEF::LEFT;
		}
	}
	CCLOG("rand %d",rand());
	CCLOG("you touchbegan%f,%f",p.x,p.y);


	return true;
}

Cocos2dx 3.0 过渡篇（二十五）死不了的贪食蛇(触摸版),布布扣,bubuko.com

Cocos2dx 3.0 过渡篇（二十五）死不了的贪食蛇(触摸版)

原文：http://blog.csdn.net/start530/article/details/23784985