Cocos2d-x v3.2 マルチタップ(cocos2d_tests の MultiTouchTest からコピる!)

HelloWorldScene.cpp

#include "HelloWorldScene.h"


USING_NS_CC;


#pragma mark - ### マルチタッチ対応 ###
//デバッグ表示用 カラー
static const Color3B* s_TouchColors[EventTouch::MAX_TOUCHES] = {
    &Color3B::YELLOW,
    &Color3B::BLUE,
    &Color3B::GREEN,
    &Color3B::RED,
    &Color3B::MAGENTA
};

//マルチタッチの状態管理用(onTouchBegan[生成] -> onTouchMoved[更新] -> onTouchEnded[解放])
class TouchPoint : public Node
{
public:
    TouchPoint()
    {
        setGLProgramState(GLProgramState::getOrCreateWithGLProgramName(GLProgram::SHADER_NAME_POSITION_TEXTURE_COLOR));
    }

    virtual void draw(Renderer *renderer, const Mat4 &transform, uint32_t flags)
    {
        DrawPrimitives::setDrawColor4B(_touchColor.r, _touchColor.g, _touchColor.b, 255);
        glLineWidth(10);
        DrawPrimitives::drawLine( Vec2(0, _touchPoint.y), Vec2(getContentSize().width, _touchPoint.y) );
        DrawPrimitives::drawLine( Vec2(_touchPoint.x, 0), Vec2(_touchPoint.x, getContentSize().height) );
        glLineWidth(1);
        DrawPrimitives::setPointSize(30);
        DrawPrimitives::drawPoint(_touchPoint);
    }

    void setTouchPos(const Vec2& pt)
    {
        _touchPoint = pt;
    }

    void setTouchColor(Color3B color)
    {
        _touchColor = color;
    }

    static TouchPoint* touchPointWithParent(Node* pParent)
    {
        auto pRet = new TouchPoint();
        pRet->setContentSize(pParent->getContentSize());
        pRet->setAnchorPoint(Vec2(0.0f, 0.0f));
        pRet->autorelease();
        return pRet;
    }

private:
    Vec2 _touchPoint;
    Color3B _touchColor;
};



#pragma mark - === HelloWorld ===

Scene* HelloWorld::createScene()
{
    auto scene = Scene::create();

    auto layer = HelloWorld::create();

    scene->addChild(layer);

    return scene;
}


bool HelloWorld::init()
{
    bool result = false;

    do
    {
        //////////////////////////////
        if ( !Layer::init() )
        {
            break;
        }

        //////////////////////////////
        //マルチタッチ
        {
            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);
            listener->onTouchesCancelled = CC_CALLBACK_2(HelloWorld::onTouchesCancelled, this);

            this->_eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
        }

        //ココまで来たら正常終了
        result = true;
    } while (0);

    return result;
}


#pragma mark - ### マルチタップ 対応 ###
//タップの状態保持
static Map<int, TouchPoint *> s_map;


void HelloWorld::onTouchesBegan(const std::vector<Touch*>& touches, Event *unused_event)
{
    //CCLOG("%s touches count:%u", __PRETTY_FUNCTION__, touches.size());

    for (auto &item : touches)
    {
        auto touch = item;
        auto location = touch->getLocation();

        auto touchPoint = TouchPoint::touchPointWithParent(this);
        {
            touchPoint->setTouchPos(location);
            touchPoint->setTouchColor(*s_TouchColors[touch->getID()]);
        }

        this->addChild(touchPoint);
        s_map.insert(touch->getID(), touchPoint);
    }
}

void HelloWorld::onTouchesMoved(const std::vector<Touch*>& touches, Event *unused_event)
{
    //CCLOG("%s touches count:%u", __PRETTY_FUNCTION__, touches.size());

    for (auto &item : touches)
    {
        auto touch = item;
        auto location = touch->getLocation();

        //TouchPoint
        auto touchPoint = s_map.at(touch->getID());
        {
            touchPoint->setTouchPos(location);
        }
    }
}

void HelloWorld::onTouchesEnded(const std::vector<Touch*>& touches, Event *unused_event)
{
    //CCLOG("%s touches count:%u", __PRETTY_FUNCTION__, touches.size());

    for (auto &item : touches)
    {
        auto touch = item;

        auto touchPoint = s_map.at(touch->getID());

        this->removeChild(touchPoint, true);
        s_map.erase(touch->getID());
    }
}

void HelloWorld::onTouchesCancelled(const std::vector<Touch*>&touches, Event *unused_event)
{
    //CCLOG("%s touches count:%u", __PRETTY_FUNCTION__, touches.size());
    this->onTouchesEnded(touches, unused_event);
}

HelloWorldScene.h

#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__

#include "cocos2d.h"

class HelloWorld : public cocos2d::Layer
{
public:
    static cocos2d::Scene* createScene();

    CREATE_FUNC(HelloWorld);

protected:
    virtual bool init();


#pragma mark - タッチイベント(マルチタッチ)
protected:
    virtual void onTouchesBegan(const std::vector<cocos2d::Touch*>& touches, cocos2d::Event *unused_event);
    virtual void onTouchesMoved(const std::vector<cocos2d::Touch*>& touches, cocos2d::Event *unused_event);
    virtual void onTouchesEnded(const std::vector<cocos2d::Touch*>& touches, cocos2d::Event *unused_event);
    virtual void onTouchesCancelled(const std::vector<cocos2d::Touch*>&touches, cocos2d::Event *unused_event);
};
#endif

iOS ... AppController.mm の - (BOOL)application:didFinishLaunchingWithOptions: で、マルチタップ用のフラグを設定が必要。

//マルチタップ
[eaglView setMultipleTouchEnabled:true];

...意外と忘れる... ^^;