Cocos2d-x3.1 多點觸摸

標籤：cocos2d-x3.1   多點觸摸   

#include "cocos2d.h"#include "ui/CocosGUI.h"USING_NS_CC;using namespace ui;class HelloWorld : public cocos2d::Layer{public:    // there's no 'id' in cpp, so we recommend returning the class instance pointer    static cocos2d::Scene* createScene();    // Here's a difference. Method 'init' in cocos2d-x returns bool, instead of returning 'id' in cocos2d-iphone    virtual bool init();          void onTouchesBegan(const std::vector<Touch*>& touches,cocos2d::Event* event);    void onTouchesMoved(const std::vector<Touch*>& touches,cocos2d::Event* event);    void onTouchesEnded(const std::vector<Touch*>& touches,cocos2d::Event* event);    void onTouchesCancel(const std::vector<Touch*>& touches,cocos2d::Event* event);    // a selector callback    void menuCloseCallback(cocos2d::Ref* pSender);        // implement the "static create()" method manually    CREATE_FUNC(HelloWorld);};

#include "HelloWorldScene.h"#include "ui/CocosGUI.h"USING_NS_CC;using namespace ui;static const Color3B* s_TouchColors[EventTouch::MAX_TOUCHES] = {    &Color3B::YELLOW,    &Color3B::BLUE,    &Color3B::GREEN,    &Color3B::RED,    &Color3B::MAGENTA};class TouchPoint : public Node{public:    //預設建構函式    TouchPoint()    {        setGLProgramState(GLProgramState::getOrCreateWithGLProgramName(GLProgram::SHADER_NAME_POSITION_TEXTURE_COLOR));    }    //draw函數    virtual void draw(Renderer *renderer,const Mat4 & transform, bool transformUpdated)    {        //設定線條顏色        DrawPrimitives::setDrawColor4B(_touchColor.r, _touchColor.g, _touchColor.b, 255);        //設定線條寬度        glLineWidth(10);        //畫X、Y方向兩條直線        DrawPrimitives::drawLine(Vec2(0,_touchPoint.y),Vec2(getContentSize().width,_touchPoint.y));        DrawPrimitives::drawLine(Vec2(_touchPoint.x,0),Vec2(_touchPoint.x,getContentSize().height));        //設定線條寬度        glLineWidth(1);        //設定點大小        DrawPrimitives::setPointSize(30);        //畫點        DrawPrimitives::drawPoint(_touchPoint);    }    //設定觸摸點位置    void setTouchPos(const Vec2& pt)    {        _touchPoint = pt;    }    //設定觸摸點顏色    void setTouchColor(Color3B color)    {        _touchColor = color;    }    //構造觸摸點    static TouchPoint* touchPointWithParent(Node* pParent)    {        auto pRet = new TouchPoint();        pRet->setContentSize(pParent->getContentSize());        pRet->setAnchorPoint(Vec2::ZERO);        pRet->autorelease();        return pRet;    }    private:    Vec2 _touchPoint;    Color3B _touchColor;};Scene* HelloWorld::createScene(){    // 'scene' is an autorelease object    auto scene = Scene::create();        // 'layer' is an autorelease object    auto layer = HelloWorld::create();    // add layer as a child to scene    scene->addChild(layer);    // return the scene    return scene;}// on "init" you need to initialize your instancebool HelloWorld::init(){    //////////////////////////////    // 1. super init first    if ( !Layer::init() )    {        return false;    }        Size visibleSize = Director::getInstance()->getVisibleSize();    Vec2 origin = Director::getInstance()->getVisibleOrigin();    /////////////////////////////    // 2. add a menu item with "X" image, which is clicked to quit the program    //    you may modify it.    // add a "close" icon to exit the progress. it's an autorelease object    auto closeItem = MenuItemImage::create(                                           "CloseNormal.png",                                           "CloseSelected.png",                                           CC_CALLBACK_1(HelloWorld::menuCloseCallback, this));    closeItem->setPosition(Vec2(origin.x + visibleSize.width - closeItem->getContentSize().width/2 ,                                origin.y + closeItem->getContentSize().height/2));    // create menu, it's an autorelease object    auto menu = Menu::create(closeItem, NULL);    menu->setPosition(Vec2::ZERO);    this->addChild(menu, 1);    //設定事件監聽    auto listener = EventListenerTouchAllAtOnce::create();    listener->onTouchesBegan = CC_CALLBACK_2(HelloWorld::onTouchesBegan,this);    listener->onTouchesMoved = CC_CALLBACK_2(HelloWorld::onTouchesMoved,this);    listener->onTouchesEnded = CC_CALLBACK_2(HelloWorld::onTouchesEnded,this);    //添加到事件分發器    Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, this);        //標籤    auto title = Label::createWithSystemFont("Please touch the screen", "", 24);    title->setPosition(Vec2(200,200));    addChild(title);    return true;}static Map<int, TouchPoint*> s_map;void HelloWorld::onTouchesBegan(const std::vector<Touch *> &touches, cocos2d::Event *event){    for(auto &item : touches)    {        auto touch = item;        auto touchPoint = TouchPoint::touchPointWithParent(this);//初始化觸摸點        auto location = touch->getLocation();                touchPoint->setTouchPos(location);//設定觸摸位置        touchPoint->setTouchColor(*s_TouchColors[touch->getID()]);//設定顏色        addChild(touchPoint);        s_map.insert(touch->getID(), touchPoint);    }}void HelloWorld::onTouchesMoved(const std::vector<Touch *> &touches, cocos2d::Event *event){    for(auto &item : touches)    {        auto touch = item;        auto pTP = s_map.at(touch->getID());        auto location = touch->getLocation();        pTP->setTouchPos(location);    }}void HelloWorld::onTouchesEnded(const std::vector<Touch *> &touches, cocos2d::Event *event){    for(auto &item : touches)    {        auto touch = item;        auto pTP = s_map.at(touch->getID());        removeChild(pTP,true);        s_map.erase(touch->getID());    }}void HelloWorld::onTouchesCancel(const std::vector<Touch *> &touches, cocos2d::Event *event){    onTouchesEnded(touches, event);}void HelloWorld::menuCloseCallback(Ref* pSender){#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");    return;#endif    Director::getInstance()->end();#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)    exit(0);#endif}

Cocos2d-x3.1 多點觸摸