cocos2d-x 3.2 移动游戏背景和精灵

  次阅读 来源:互联网(转载协议) 2015-09-27 15:24 我要评论(0)

1,先新增监听事件

auto listener = EventListenerTouchOneByOne::create();

listener->setSwallowTouches(true);

listener->onTouchBegan = CC_CALLBACK_2(StartGame::onTouchBegan, this);

listener->onTouchMoved = CC_CALLBACK_2(StartGame::onTouchMoved, this);

listener->onTouchEnded = CC_CALLBACK_2(StartGame::onTouchEnded, this);

_eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);

2,监听的方法回调函数实现

bool StartGame::onTouchBegan(Touch* touch, Event* event)

{

Point touchLocation = this->convertTouchToNodeSpace(touch);

this->selectSpriteForTouch(touchLocation);

return true;

}

void StartGame::onTouchMoved(Touch* touch, Event* event)

{

Point touchLocation = this->convertTouchToNodeSpace(touch);

Point oldTouchLocation = touch->getPreviousLocation();

oldTouchLocation = this->convertToNodeSpace(oldTouchLocation);

Point translation = touchLocation - oldTouchLocation;//获取移动的距离

CCLog("touchLocation--------------------%d-------%d",touchLocation.x,touchLocation.y);

CCLog("oldTouchLocation--------------------%d-------%d",oldTouchLocation.x,oldTouchLocation.y);

CCLog("translation--------------------%d-------%d",translation.x,translation.y);

this->boundLayerPos(translation);//背景移动函数

//this->panForTranslation(translation);//精灵移动函数

}

void StartGame::onTouchEnded(Touch* touch, Event* event)

{

}

3,方法实现

这个事背景事件,在init里面加载一张背景图片

void StartGame::boundLayerPos(Point newtouch)

{

Size winSize = Director::getInstance()->getWinSize();

Point newPos = this->getPosition() + newtouch;

auto map = getChildByTag(102); //这里获取背景图片

newPos.x = MIN(newPos.x, 0);

newPos.x = MAX(newPos.x, -map->getContentSize().width+winSize.width);

newPos.y = MIN(newPos.y,0);

newPos.y = MAX(newPos.y, -map->getContentSize().height + winSize.height);

this->setPosition(newPos);

}

精灵移动方法实现

在init里面加载一个精灵

void StartGame::panForTranslation(Point translation)

{

auto sprite = getChildByTag(101);//获取精灵

Point newPos = sprite->getPosition() + translation;

sprite->setPosition(newPos);

}

这就ok了

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