简单的cocos2d-x手势（转）

项目需要用到非常简单手势拨动，就是向上/下/左、右滑动时，界面能响应。

以下提供一个较为简单的手势滑动解决办法

GestureLayer.h

class GestureLayer: public CCLayer
{
        virtual void onEnter();
        virtual void onExit();

    virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);
    virtual void ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent);
    virtual void ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent);
    virtual void ccTouchCancelled(CCTouch *pTouch, CCEvent *pEvent);
private:
    bool b_click;                   //判断当前是否是单击;
    bool b_debug;                   //调试用;
    bool b_circle;                  //其实这个圆形的判断不是很精确;
    bool cache_directionshape[4];   //方向缓存，move中用它来判断是否是单向手势
    GDirection gd_direction;        //手势方向;
    CCPoint ccp_last,ccp_now;       //记录起始、当前坐标
}

GestureLayer.cpp

void GestureLayer::onEnter()

{

    CCLayer::onEnter();

    CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, 0, true);

}

void GestureLayer::onExit()

{

    CCLayer::onExit();

    CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);

}

bool GestureLayer::ccTouchBegan(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent)
{
    CCPoint localPoint = pTouch->getLocationInView();
    ccp_last = localPoint;
    ccp_last = CCDirector::sharedDirector()->convertToGL(ccp_last);
    
    localPoint = this->getParent()->convertTouchToNodeSpace(pTouch);
    if (localPoint.x < 0 || localPoint.y < 0)
    {
        return false;
    }
    CCSize si = getContentSize();
    if (localPoint.x > si.width || localPoint.y > si.height)
    {
        return false;
    }
    b_click = true;
    b_circle = false;
    gd_direction = kGDirectionNo;
    for (int i = 0 ; i < 4 ; i++)
    {
        cache_directionshape[i] = false;
    }
    return true;
}
void GestureLayer::ccTouchMoved(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent)
{
    b_click = false;
    ccp_now = pTouch->getLocationInView();
    ccp_now = CCDirector::sharedDirector()->convertToGL(ccp_now);
    float adsx = ccp_now.x - ccp_last.x;
    float adsy = ccp_now.y - ccp_last.y;
    if(fabsf(adsx) > fabsf(adsy))   //X方向增量大
    {
        if(adsx < 0)
        {
            //左移;
            cache_directionshape[0] = 1;
        }
        else
        {
            cache_directionshape[1] = 1;
        }
    }
    else
    {
        if(adsy < 0)
        {
            cache_directionshape[2] = 1;
        }
        else
        {
            cache_directionshape[3] = 1;
        }
    }
    int x = 0;
    for (int i = 0 ; i< 4 ; i++)
    {
        if(cache_directionshape[i])
        {
            x++;
        }
    }
    if(x >= 2)
    {
        b_circle = true;
    }
}
void GestureLayer::ccTouchEnded(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent)
{
    //圆形;
    if(b_circle || b_click)
    {
        return;
    }
    float adsx = ccp_now.x - ccp_last.x;
    float adsy = ccp_now.y - ccp_last.y;
    if(fabsf(adsx) > fabsf(adsy))   //X方向增量大
    {
        if(adsx < 0)
        {
            gd_direction = kGDirectionLeft;
        }
        else
        {
            gd_direction = kGDirectionRight;
        }
    }
    else
    {
        if(adsy < 0)
        {
            gd_direction = kGDirectionDown;
        }
        else
        {
            gd_direction = kGDirectionUp;
        }
    }
    //判断手势类型
    switch (gd_direction)
    {
        case kGDirectionLeft:
        {
break;
        }
        case kGDirectionRight:
        {
            break;
        }
        default:
            break;
    }
}
void GestureLayer::ccTouchCancelled(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent)
{
    ccTouchEnded(pTouch,pEvent);
}