上篇文章写了Paddle类来处理精灵的点击、触摸事件，现在我们在Paddle的基础上
写一个MyPaddle类，来处理上一关、下一关、开始游戏按钮的点击事件。
1.类声明如下：
class MyPaddle :
public Paddle
{
CC_SYNTHESIZE(enum_evt, m_evttyp, evttyp);
CC_SYNTHESIZE(ChoiceScene*, m_pSence, pSence); public:
MyPaddle();
~MyPaddle(); virtual bool ccTouchBegan(CCTouch* touch, CCEvent* event);
virtual void ccTouchEnded(CCTouch* touch, CCEvent* event); private:
bool bFlag;
};
2.其中bFlag用于标记是否被点击，我们处理ccTouchBegan和ccTouchEnded来处理点击事件：
bool MyPaddle::ccTouchBegan(CCTouch* touch, CCEvent* event)
{
if (Paddle::ccTouchBegan(touch, event))
{
bFlag = true;
return true;
}
return false;
} void MyPaddle::ccTouchEnded(CCTouch* touch, CCEvent* event)
{
Paddle::ccTouchEnded(touch, event);
if (bFlag)
{
bFlag = false;
m_pSence->touchDownAction(this, m_evttyp);
}
}
3.可以看到ccTouchEnded中确认精灵被点击后会调用场景中的touchDownAction，
其中第二个参数是点击的事件类型，我们在ChoiceScene中实现touchDownAction这个函数：
在实现之前用一个头文件存放一些游戏中的常量，先定义一个常量和一些枚举类型，
#define ROUNDS 20
enum enum_evt {
evt_start,
evt_pressA,
evt_pressB,
evt_text
};
ROUNDS是关卡总数，enum_evt是事件类型
然后再ChoiceScene中定义如下内容
public:
void touchDownAction(CCObject* sender , unsigned int controlEvent);
private:
void update();
int m_nRound;
m_nRound初始化为1，其中update根据m_nRound的值更新显示的关卡数，下面我们写他们的实现代码如下：
void ChoiceScene::touchDownAction(CCObject* sender, unsigned int controlEvent)
{
if (controlEvent == evt_pressA)
{
m_nRound = 1 + (m_nRound - 1 + ROUNDS - 1) % ROUNDS;
update();
}
else if (controlEvent == evt_pressB)
{
m_nRound = 1 + (m_nRound + 1 + ROUNDS - 1) % ROUNDS;
update();
}
else if (controlEvent == evt_start)
{
//开始对应关卡的场景,稍后添加
}
} void ChoiceScene::update()
{
char szTemp[260];
CCLabelAtlas* label1 = (CCLabelAtlas*)getChildByTag(evt_text);
sprintf(szTemp, "%d", m_nRound);
label1->setString(szTemp);
}
可以看到update中，getChildByTag来根据Tag来获取子节点的指针，还记得我们在ChoiceScene中的代码吗？
//5.对现实关卡的数字进行操作，设置显示数字为1，
//设置锚点，设置缩放，设置位置已经颜色，
int i = 3;
ccColor3B color = { 0, 0, 0 };
float* fSetting = fSettings[i];
CCLabelAtlas* label1 = CCLabelAtlas::create("1", szImgs[i], 16, 32, '.'); CCSize sz = label1->getContentSize();
label1->setAnchorPoint(ccp(0.5f, 0.5f));
label1->setScaleX(szWin.width / sz.width * fSetting[0]);
label1->setScaleY(szWin.height / sz.height * fSetting[1]);
label1->setPosition(ccp(szWin.width * fSetting[2], szWin.height * fSetting[3]));
label1->setColor(color);
addChild(label1, 0);
可以看到我们在ChoiceScene中第五步最后addChild，我们现在改为
addChild(label1, 0, evt_text);
这样，我们在update中可以获取到这个精灵对象，并修改它显示的内容。
4.最后我们在MyPaddle中添加一个通过纹理创建精灵的函数，注意在类中声明是静态函数：
MyPaddle* MyPaddle::paddleWithTexture(CCTexture2D* pTexture)
{
MyPaddle* pPaddle = new MyPaddle();
pPaddle->initWithTexture(pTexture);
pPaddle->autorelease();
return pPaddle;
}
5.万事具备了，只需要把ChoiceScene中创建的 上一关、下一关、开始游戏按钮的精灵
换成我们的MyPaddle精灵：
//4.分别对开始游戏，上一关，下一关按钮的图片加载上来显示到合适位置
enum_evt evts[4] = {evt_start, evt_pressA, evt_pressB, evt_text};
for (int i = 0; i < 3; ++i)
{
float* fSetting = fSettings[i];
CCTexture2D* paddleTexture = CCTextureCache::sharedTextureCache()->addImage(szImgs[i]);
//CCSprite* pPaddle = CCSprite::createWithTexture(paddleTexture);
MyPaddle* pPaddle = MyPaddle::paddleWithTexture(paddleTexture);
CCSize szBtn = pPaddle->getContentSize();
pPaddle->setScaleX(szWin.width / szBtn.width * fSetting[0]);
pPaddle->setScaleY(szWin.height / szBtn.height * fSetting[1]);
pPaddle->setPosition(ccp(szWin.width * fSetting[2], szWin.height * fSetting[3]));
addChild(pPaddle); //设置当前场景到MyPaddle中,然后设置事件类型到MyPaddle中
pPaddle->setpSence(this);
pPaddle->setevttyp(evts[i]);
}
可以看到注释的位置替换成了额我们的MyPaddle精灵：
MyPaddle* pPaddle = MyPaddle::paddleWithTexture(paddleTexture);
然后再最后在pPaddle中设置了我们的场景和相应的事件类型。
pPaddle->setpSence(this);
pPaddle->setevttyp(evts[i]);
好了，现在我们编译运行程序，可以看到可以自由选择关卡和显示关卡了，如下图：
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" 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好了，下一篇我们写游戏关卡内容场景的设计，以及相应关卡开始按钮切换到关卡内容场景的事件。
本篇完整源码下载地址：