de类，用于实现各种引导。
下面我们逐个分析这些类。
半透明层
class PopupLayer : public LayerColor
{
public:
PopupLayer();
~PopupLayer();
virtual bool init();
virtual bool doInit() = 0;
//touch事件监听 屏蔽向下触摸
virtual bool onTouchBegan(Touch *touch, Event *event) override;
virtual void onTouchMoved(Touch *touch, Event *event) override;
virtual void onTouchEnded(Touch* touch, Event* event) override;
virtual std::function<bool(Touch*, Event*)> getTouchBeganFunc() { return CC_CALLBACK_2(PopupLayer::onTouchBegan, this); };
virtual std::function<void(Touch*, Event*)> getTouchMovedFunc() { return CC_CALLBACK_2(PopupLayer::onTouchMoved, this); }
virtual std::function<void(Touch*, Event*)> getTouchEndedFunc() { return CC_CALLBACK_2(PopupLayer::onTouchEnded, this); }
protected:
EventListenerTouchOneByOne* m_pListener;
};
PopupLayer::PopupLayer()
: m_pListener(nullptr)
{
}
PopupLayer::~PopupLayer()
{
Director::getInstance()->getEventDispatcher()->removeEventListener(m_pListener);
}
bool PopupLayer::init()
{
if (!LayerColor::init())
{
return false;
}
m_pListener = EventListenerTouchOneByOne::create();
m_pListener->setSwallowTouches(true);
m_pListener->onTouchBegan = getTouchBeganFunc();
m_pListener->onTouchMoved = getTouchMovedFunc();
m_pListener->onTouchEnded = getTouchEndedFunc();
auto dispatcher = Director::getInstance()->getEventDispatcher();
dispatcher->addEventListenerWithSceneGraphPriority(m_pListener, this);
setColor(Color3B(0, 0, 0));
setOpacity(160);
return doInit();
}
bool PopupLayer::onTouchBegan(Touch *touch, Event *event)
{
return true;
}
void PopupLayer::onTouchMoved(Touch *touch, Event *event)
{
}
void PopupLayer::onTouchEnded(Touch* touch, Event* event)
{
}
上面这段代码中，通过继承LayerColor，并使用setColor(Color3B(0, 0, 0)); setOpacity(160);来实现一个半透明层的遮盖，而具体的界面初始化和触摸响应，则由子类来重写doInit/onTouchBegan/ onTouchMoved/ onTouchEnded来实现。
新手引导基类
先上代码
#define DECLARE_GUIDE(name)\
private:\
static bool mInit; \
static int mType; \
public:\
static Guide* create()\
{\
return new name(); \
}\
static bool checkCondition();
#define REGISTER_GUIDE(type, name) \
bool name::mInit = GuideMgr::getInstance()->registerFunc(type, name::checkCondition, name::create); \
int name::mType = type;
class Guide : public PopupLayer
{
public:
Guide();
public:
//显示
Guide* show(int GuideType, Node* pRoot, Node* pTarget, const std::function<void()>& callback = nullptr);
//还原target
void restore();
//设置文字描述
void setPrompt(const std::string& prompt);
//设置玩家触摸屏幕任意一点后的响应，例如：销毁当前的引导并弹出新的引导
virtual void onTouchEnded(Touch *touch, Event *event) override;
virtual std::function<void(Touch*, Event*)> getTouchEndedFunc() override
{
return CC_CALLBACK_2(Guide::onTouchEnded, this);
}
virtual void onEnter() override;
virtual void onExit() override;
protected:
//在最上层创建一个GuideBg，然后把target按钮从原节点上拿下来，添加到GuideBg上
virtual bool doInit() override;
protected:
int m_iGuideType;
std::function<void()> m_callback;
Node* m_pRoot;
Node* m_pTarget;
int m_targetLocalZOrder;
Vec2 m_targetPos;
Node* m_targetParent;
ui::Text* m_pTextPrompt;
std::string