cocos2dx 触摸测试四 Armature

我忘了我这篇测试的主要目的是干啥了...。

就算往项目上靠靠吧，我项目里面要用到CCArmature这个，给这个实现单指拖拽，双指缩放功能。

新建类MyArmature，和MySprite类似，如下：

MyArmature.h

//
//  MyArmature.h
//  TouchesTest
//
//  Created by HanHongmin on 13-12-29.
//
//

#ifndef __TouchesTest__MyArmature__
#define __TouchesTest__MyArmature__

#include "cocos2d.h"
#include "cocos-ext.h"
using namespace cocos2d;
using namespace cocos2d::extension;
class MyArmature:public CCArmature,public CCTouchDelegate{
public:
    static MyArmature* create(const char* name,int nPriority);
    
    virtual void onEnter();
    virtual void onExit();
    void draw();//for Test
    
    // optional
    virtual void ccTouchesBegan(CCSet *pTouches, CCEvent *pEvent);
    virtual void ccTouchesMoved(CCSet *pTouches, CCEvent *pEvent);
    virtual void ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent);
    virtual void ccTouchesCancelled(CCSet *pTouches, CCEvent *pEvent);
    void setPriority(int nPriority);
    int getPriority();
protected:
    int _nPriority;
};

#endif /* defined(__TouchesTest__MyArmature__) */

MyArmature.cpp

//
//  MyArmature.cpp
//  TouchesTest
//
//  Created by HanHongmin on 13-12-29.
//
//

#include "MyArmature.h"

MyArmature* MyArmature::create(const char *name,int nPriority){
    MyArmature *armature = new MyArmature();
    if (armature && armature->init(name))
    {
        armature->setPriority(nPriority);
        armature->autorelease();
        return armature;
    }
    CC_SAFE_DELETE(armature);
    return NULL;
}
void MyArmature::setPriority(int nPriority){
    _nPriority = nPriority;
}
int MyArmature::getPriority(){
    return _nPriority;
}

void MyArmature::onEnter(){
    CCDirector::sharedDirector()->getTouchDispatcher()->addStandardDelegate(this, _nPriority);//多点触控
    CCArmature::onEnter();
}
void MyArmature::onExit(){
    CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);
    CCArmature::onExit();
}

void MyArmature::draw(){
    CCArmature::draw();
    CCRect rect = this->boundingBox();
    
    ccDrawColor4B(255, 0, 0, 255);
    ccDrawRect(convertToNodeSpace(rect.origin), convertToNodeSpace(ccp(rect.getMaxX(), rect.getMaxY())));
}


// optional
void MyArmature::ccTouchesBegan(CCSet *pTouches, CCEvent *pEvent){
    //CCLog("ccTouchesBegan touches point count:%i",pTouches->count());
    CCLog("origin:%f,%f",this->boundingBox().origin.x,this->boundingBox().origin.y);
}
void MyArmature::ccTouchesMoved(CCSet *pTouches, CCEvent *pEvent){
    //CCLog("ccTouchesMoved touches point count:%i",pTouches->count());
    CCDictionary* touchesDic = CCDictionary::create();
    CCSetIterator iter = pTouches->begin();
    CCRect rect = this->boundingBox();
    CCLog("rect:%f,%f",rect.size.width,rect.size.height);
    for (; iter != pTouches->end(); iter++){
        CCTouch* pTouch = (CCTouch*)(*iter);
        if(rect.containsPoint(pTouch->getLocation())){
            touchesDic->setObject(pTouch, CCString::createWithFormat("%d",pTouch->getID())->getCString());
        }
    }
    CCArray* keys = touchesDic->allKeys();
    //两个手指
    if (touchesDic->count() >= 2){
        //CCLog("****ccTouchesMoved*");
        CCArray* keys = touchesDic->allKeys();
        CCTouch *touch1 = (CCTouch*)touchesDic->objectForKey(((CCString*)keys->objectAtIndex(0))->getCString());
        CCTouch *touch2 = (CCTouch*)touchesDic->objectForKey(((CCString*)keys->objectAtIndex(1))->getCString());
        
        CCPoint p1End = touch1->getLocation();
        CCPoint p2End = touch2->getLocation();
        CCPoint p1Start = touch1->getPreviousLocation();
        CCPoint p2Start = touch2->getPreviousLocation();
        
        float startDistance = ccpDistance(p1Start,p2Start);
        float endDistance = ccpDistance(p1End,p2End);
        
        //CCLog("startDistance:%f,endDistance:%f",startDistance,endDistance);
        float scale = this->getScale()*(endDistance/startDistance);
        CCLog("scale %f",scale);
        if(scale<1.0f){
            scale = 1.0f;
        }else if(scale>3.0f){
            scale = 3.0f;
        }
        this->setScale(scale);
        
        pTouches->removeObject(touch1);
        pTouches->removeObject(touch2);
    }else if(touchesDic->count() ==1){//单点
        CCTouch *pTouch = (CCTouch*)touchesDic->objectForKey(((CCString*)keys->objectAtIndex(0))->getCString());
        CCPoint start = pTouch->getPreviousLocation();
        CCPoint end = pTouch->getLocation();
        //计算位移，直接使用point充当position的话，会有偏差，比如点住图片的一角进行拖动，setPosition的时候是依据AnchorPoint进行设置的
        CCPoint sub = ccpSub(end, start);
        CCPoint newPosition = ccpAdd(this->getPosition(),sub);
        this->setPosition(newPosition);
        
        pTouches->removeObject(pTouch);
    }
}
void MyArmature::ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent){
    //CCLog("****ccTouchesEnded*");
}
void MyArmature::ccTouchesCancelled(CCSet *pTouches, CCEvent *pEvent){
    //CCLog("****ccTouchesCancelled*");
}

draw方法是测试用的，因为在测试时发现boundingBox的位置不准，所以把它描绘出来看看。后面再说这个吧。

HelloWorld的init方法

bool HelloWorld::init()
{
    if ( !CCLayer::init() )
    {
        return false;
    }
    CCArmatureDataManager::sharedArmatureDataManager()->addArmatureFileInfo("run.png", "run.plist", "run.xml");//加载动画资源
    MyArmature* armature = MyArmature::create("run",1);
    armature->setPosition(VisibleRect::center());
    armature->setScale(2.0f);
    this->addChild(armature,0);
    
    /**
    MySprite* pSprite2 = MySprite::create("Icon-114.png",2);//优先级数值越小越优先响应
    pSprite2->setPosition(VisibleRect::center());
    pSprite2->setScale(2.0f);
    this->addChild(pSprite2, 1);
     */
    
    MySprite* pSprite = MySprite::create("HelloWorld.png",0);
    pSprite->setPosition(VisibleRect::center());
    this->addChild(pSprite, 1);
    
    return true;
}

CCArmature是 cocos2dx 扩展包里的东西，别忘了下面两行

#include "cocos-ext.h"
using namespace cocos2d::extension;

然后就应该可以看看效果了。

是不是发现boundingBox不是想得那么回事？因为Armature中有子Armature的关系吧，我猜的。

在论坛发帖问了，还没得到回复，自己尝试hack了一下源码，没想到啊，还好使了。。。

修改CCArmature::boundingBox如下：

CCRect CCArmature::boundingBox()
{
    float minx, miny, maxx, maxy = 0;

    bool first = true;

    CCRect boundingBox = CCRectMake(0, 0, 0, 0);

    CCObject *object = NULL;
    CCARRAY_FOREACH(m_pChildren, object)
    {
        if (CCBone *bone = dynamic_cast<CCBone *>(object))
        {
            CCArmature* child = bone->getChildArmature();
            //CCRect r = bone->getDisplayManager()->getBoundingBox();//hack by HanHongmin 2013-12-29
            CCRect r;
            if(child!=NULL){
                r = child->boundingBox();
            }else{
                r = bone->getDisplayManager()->getBoundingBox();
            }
            //hack finish

            if(first)
            {
                minx = r.getMinX();
                miny = r.getMinY();
                maxx = r.getMaxX();
                maxy = r.getMaxY();

                first = false;
            }
            else
            {
                minx = r.getMinX() < boundingBox.getMinX() ? r.getMinX() : boundingBox.getMinX();
                miny = r.getMinY() < boundingBox.getMinY() ? r.getMinY() : boundingBox.getMinY();
                maxx = r.getMaxX() > boundingBox.getMaxX() ? r.getMaxX() : boundingBox.getMaxX();
                maxy = r.getMaxY() > boundingBox.getMaxY() ? r.getMaxY() : boundingBox.getMaxY();
            }

            boundingBox.setRect(minx, miny, maxx - minx, maxy - miny);
        }
    }

    return CCRectApplyAffineTransform(boundingBox, nodeToParentTransform());
}

运行之，看看吧。

改的对不对我不知道哈，反正跟我要的效果差不多了。

等着看论坛帖子下文吧：

http://www.cocos2d-x.org/forums/6/topics/41700

http://www.cocoachina.com/bbs/read.php?tid=176727

恩，现在两个自定义类了，可能大家早就发现了，能够提取出来公共代码。

虽然复制粘贴不麻烦，但是我想，大多数程序员都应该有代码洁癖吧。。。

各位自行搞一搞吧，我尝试了一下不会弄T_T，谁弄好了告诉我一声。

还有一点，如果涉及到x轴Y轴单向翻转的话，缩放哪里要注意，X，Y要分开。

setScale方法会把scaleX和scaleY都设置了，相当于调用了setScaleX和setScaleY。