Cocos2d-x 3.x开发叠加触摸的问题

分手后的思念是犯贱 2022-08-10 14:42 89阅读 0赞

叠加触摸就是说两个触摸层叠加一起, 点击上边的层,则下边也会被点中.这个问题困扰我有一个星期了,不过终于还是解决了,心情很通畅,写点笔记作参考.

void CtrolSprite::setTouchEnableds(bool var)
    {
        if ( m_bTouchEnabled == var ) return;
        m_bTouchEnabled = var;
        if ( var )
        {
            auto dispather = Director::getInstance()->getEventDispatcher();
            lisner = EventListenerTouchOneByOne::create();
            lisner->setSwallowTouches( true );
            lisner->onTouchBegan = [&](cocos2d::Touch *pTouch, cocos2d::Event *pEvent)
            {
                if ( !m_bTouchEnabled ) return true;
                if ( isTouchInside( pTouch ) )
                {
                    m_bSelected = true;
                    setColor( Color3B(150, 150, 150) );
                    return true;  //返回真则吞噬低于此优先级的触摸层
                }
                return false;
            };
            lisner->onTouchMoved = [&](cocos2d::Touch *pTouch, cocos2d::Event *pEvent)
            {
                if ( !m_bTouchEnabled || !m_bSelected ) return;
                if ( !isTouchInside(pTouch) ) m_bSelected = false;
            };
            lisner->onTouchEnded = [&](cocos2d::Touch *pTouch, cocos2d::Event *pEvent)
            {
                setColor( Color3B(255, 255, 255) );
                if ( !m_bTouchEnabled || !m_bSelected ) return;
                if ( isTouchInside(pTouch) && isVisible() )
                {
                    if ( m_pTarget && m_selector )
                    {
                        (m_pTarget->*m_selector)(this);
                    }
                }
                m_bSelected = false;
            };
            dispather->addEventListenerWithFixedPriority(lisner, m_iPriority); //设置优先级负数越高触摸越靠前, 如果设置固定优先级,那么必须手动移除.                                                //dispather->addEventListenerWithSceneGraphPriority(lisner, this); //这个是最前边的层越优先触摸.
        }else
        {
            auto dispather = Director::getInstance()->getEventDispatcher();
            dispather->removeEventListener( lisner );
        }
    }

看看吧.就这么简单.搞清楚原理就行

Rect CtrolSprite::getRect()
    {
    	float t_fX = getPositionX() - getContentSize().width * getAnchorPoint().x;
    	float t_fY = getPositionY() - getContentSize().height * getAnchorPoint().y;
    	float t_fW = getContentSize().width;
    	float t_fH = getContentSize().height;
    	Rect box = Rect(t_fX, t_fY, t_fW, t_fH);
    	box.origin = Vec2::ZERO;
    	return box;
    }

不是很理解上边代码.  领悟中....