Learning Cocos2d-x for WP8（8）——动作Action

2022-10-06 13:37:35

原文:Learning Cocos2d-x for WP8（8）——动作Action

游戏很大程度上是由动作画面支撑起来的。

动作分为两大类：瞬间动作和延时动作。

瞬间动作基本等同于设置节点的属性，延时动作会执行一段时间，不需要清除这两种动作，一旦动作完成，就会从节点上清除并释放所占内存。

封装CCSpriteBatchNode的使用方法

BatchAnimatitonSprite 
 CCSprite* SpriteActionLayer::BatchAnimatitonSprite(CCLayer* pLayer,CCSprite *pSprite, CCPoint* spriteStartPoint, const char *strFramesFileName,const char *strFramesFileNameImg,const char *strFirstFrameName,const char *strEachFrameName,int frameCount,float frameDelay)

 {

     //CCSpriteBatchNode

     //创建批处理节点，读取plist文件

     CCSpriteFrameCache* cache=CCSpriteFrameCache::sharedSpriteFrameCache();

     cache->addSpriteFramesWithFile(strFramesFileName,strFramesFileNameImg);

     //起始精灵

     pSprite=CCSprite::spriteWithSpriteFrameName(strFirstFrameName);//纹理plist中包含strfirstFrameName

     pSprite->setPosition(ccp(spriteStartPoint->x,spriteStartPoint->y));    

     CCSpriteBatchNode* spritebatch = CCSpriteBatchNode::batchNodeWithFile(strFramesFileNameImg);//与CCSpriteFrameCache同一纹理

     spritebatch->addChild(pSprite);

     pLayer->addChild(spritebatch,);

     //创建逐帧数组

     CCMutableArray<CCSpriteFrame*>* animFrames1=new CCMutableArray<CCSpriteFrame*>(frameCount);

     char str1[]={};

     for(int i=;i<frameCount;i++)

     {

         sprintf(str1,strEachFrameName,i);

         CCSpriteFrame* pFrame=cache->spriteFrameByName( str1 );

         animFrames1->addObject(pFrame);

     }

     CCAnimation* animation1=CCAnimation::animationWithFrames(animFrames1,frameDelay);

     pSprite->runAction(CCRepeatForever::actionWithAction(CCAnimate::actionWithAnimation(animation1,false)));

     animFrames1->release();

     return pSprite;

 }

重复动作

可以使一个动作或一系列的动作不停地重复无限循环，除非“外力”使其停止。

实例

     //重复动作

     CCSprite *role0=CCSprite::spriteWithFile("Sprite/Role.png");

     role0->setPosition(ccp(,s.height-));

     addChild(role0,);

     CCRotateBy* role0RotateBy=CCRotateBy::actionWithDuration(2.0f,);

     CCRepeatForever* role0Repeat=CCRepeatForever::actionWithAction(role0RotateBy);

     role0->runAction(role0Repeat);

Sprite循环不停地旋转

Learning Cocos2d-x for WP8（8）——动作Action

流畅动画

CCEaseAction类能在一段时间内动作的流畅执行，使得更强大。而非简单地执行简单动画效果。

在实际运动过程中，匀速运动在启动和结束时往往会有一定的加速和减速的效果，这样更加的真实。

cocoos2d-x引擎提供了相关的API，免除了我们编写相关的算法实现的烦恼，实现起来相当的方便。

实现该方法的是CCActionEase中CCEaseRateAction系列，大体分成三类：

In：开始时候的加速度

Out：结束时候的加速度

InOut：开始结束时候的加速度

（以下图片来源其他博文，具体地址忘记了，以后再加上）

1.指数缓冲

Learning Cocos2d-x for WP8（8）——动作Action

EaseExponentialIn

EaseExponentialOut

EaseExponentialInOut

2.赛因缓冲

Learning Cocos2d-x for WP8（8）——动作Action

EaseSineIn

EaseSineOut

EaseSineInOut

3.弹性缓冲

Learning Cocos2d-x for WP8（8）——动作Action

EaseElasticIn

EaseElasticOut

EaseElasticInOut

4.跳跃缓冲

Learning Cocos2d-x for WP8（8）——动作Action

EaseBounceIn

EaseBounceOut

EaseBounceInOut

5.回震缓冲

Learning Cocos2d-x for WP8（8）——动作Action

EaseBackIn

EaseBackOut

EaseBackInOut

实例

     //流畅动画

     CCSprite* role1=NULL;

     role1=SpriteActionLayer::BatchAnimatitonSprite(this,role1,new CCPoint(,s.height/),"Sprite/Plist/RoleRun.plist","Sprite/Plist/RoleRun.png","RoleRun0.png","RoleRun%d.png",,0.2f);

     CCMoveTo* role1Move=CCMoveTo::actionWithDuration(,CCPointMake(s.width-,s.height/));//CCMoveTo绝对位置移动

     CCEaseInOut* role1MoveEase=CCEaseInOut::actionWithAction(role1Move,);//rate=4,决定流畅动画的明显程度，只有当它大于1时才能看到效果

     role1->runAction(role1MoveEase);

可见，Sprite开始缓慢移动——加速——缓慢停止。

Learning Cocos2d-x for WP8（8）——动作ActionLearning Cocos2d-x for WP8（8）——动作Action

动作序列

通常情况下，Action动作执行添加多个动作时，它们会在同一时间运行，如上面的动作。但有时我们需要让动作一个接着一个运行。CCSequence将实现该功能。

实例

     //动作序列

     CCSprite* role2=NULL;

     role2=SpriteActionLayer::BatchAnimatitonSprite(this,role2,new CCPoint(,s.height/),"Sprite/Plist/Role2Run.plist","Sprite/Plist/Role2Run.png","Role2Run0.png","Role2Run%d.png",,0.3f);

     CCMoveBy* role2MoveBy=CCMoveBy::actionWithDuration(,CCPointMake(,));//CCMoveBy相对位置移动

     CCJumpBy* role2JumpBy=CCJumpBy::actionWithDuration(,CCPointMake(-,),,);//CCJumpBy相当位置jump

     role2->runAction(CCSequence::actions(role2MoveBy,role2JumpBy,NULL));

Sprite跑动到指定位置后，下个动作就是弹跳回起始位置

Learning Cocos2d-x for WP8（8）——动作ActionLearning Cocos2d-x for WP8（8）——动作Action

瞬间动作

有时在一串动作中，需要改变Sprite的属性，然后在继续执行下个动作。瞬间动作将实现该功能，通常情况下依赖与CCCallFunc动作。

实例

     //瞬时动作

     CCSprite* role3=CCSprite::spriteWithFile("Sprite/Role.png");

     role3->setPosition(ccp(s.width-,s.height-));

     addChild(role3,);

     CCScaleTo * role3ScaleTo=CCScaleTo::actionWithDuration(,2.0f);

     CCCallFuncN* role3FunN=CCCallFuncN::actionWithTarget(this,callfuncN_selector(SpriteActionLayer::repeatForever));

     role3->runAction(CCSequence::actions(role3ScaleTo,role3FunN,NULL));

repeatForever方法

 void SpriteActionLayer::repeatForever(CCNode* pSender)

 {

     CCRepeatForever* repeat=CCRepeatForever::actionWithAction(CCSkewBy::actionWithDuration(, 37.2f, -37.2f));//歪斜

     pSender->runAction(repeat);

 }

执行完ScaleTo后执行SkewBy

Learning Cocos2d-x for WP8（8）——动作Action

完整源码

SpriteActionTest.h 
 #ifndef _SPRITE_ACTION_TEST_

 #define _SPRITE_ACTION_TEST_

 #include "cocos2d.h"

 using namespace cocos2d;

 class SpriteActionScene:public CCScene

 {

 public:

     SpriteActionScene();

     ~SpriteActionScene();

     virtual void onEnter();

 };

 class SpriteActionLayer:public CCLayer

 {

 public:

     SpriteActionLayer();

     ~SpriteActionLayer();

 public:

     void repeatForever(CCNode* pTarget);

     CCSprite* BatchAnimatitonSprite(CCLayer* pLayer,CCSprite *pSprite,CCPoint* spriteStartPoint,const char *strFramesFileName,const char *strFramesFileNameImg,const char *strFirstFrameName,const char *strEachFrameName,int frameCount,float frameDelay);

 };

 #endif
SpriteActionTest.cpp 
 #include "pch.h"

 #include "Classes\SpriteActionTest.h"

 //----------------------------------------

 //

 //SpriteActionLayer

 //

 //----------------------------------------

 SpriteActionLayer::SpriteActionLayer()

 {

     CCSize s=CCDirector::sharedDirector()->getWinSize();

     //重复动作

     CCSprite *role0=CCSprite::spriteWithFile("Sprite/Role.png");

     role0->setPosition(ccp(,s.height-));

     addChild(role0,);

     CCRotateBy* role0RotateBy=CCRotateBy::actionWithDuration(2.0f,);

     CCRepeatForever* role0Repeat=CCRepeatForever::actionWithAction(role0RotateBy);

     role0->runAction(role0Repeat);

     //流畅动画

     CCSprite* role1=NULL;

     role1=SpriteActionLayer::BatchAnimatitonSprite(this,role1,new CCPoint(,s.height/),"Sprite/Plist/RoleRun.plist","Sprite/Plist/RoleRun.png","RoleRun0.png","RoleRun%d.png",,0.2f);

     CCMoveTo* role1Move=CCMoveTo::actionWithDuration(,CCPointMake(s.width-,s.height/));//CCMoveTo绝对位置移动

     CCEaseInOut* role1MoveEase=CCEaseInOut::actionWithAction(role1Move,);//rate=4,决定流畅动画的明显程度，只有当它大于1时才能看到效果

     role1->runAction(role1MoveEase);

     //动作序列

     CCSprite* role2=NULL;

     role2=SpriteActionLayer::BatchAnimatitonSprite(this,role2,new CCPoint(,s.height/),"Sprite/Plist/Role2Run.plist","Sprite/Plist/Role2Run.png","Role2Run0.png","Role2Run%d.png",,0.3f);

     CCMoveBy* role2MoveBy=CCMoveBy::actionWithDuration(,CCPointMake(,));//CCMoveBy相对位置移动

     CCJumpBy* role2JumpBy=CCJumpBy::actionWithDuration(,CCPointMake(-,),,);//CCJumpBy相当位置jump

     role2->runAction(CCSequence::actions(role2MoveBy,role2JumpBy,NULL));

     //瞬时动作

     CCSprite* role3=CCSprite::spriteWithFile("Sprite/Role.png");

     role3->setPosition(ccp(s.width-,s.height-));

     addChild(role3,);

     CCScaleTo * role3ScaleTo=CCScaleTo::actionWithDuration(,2.0f);

     CCCallFuncN* role3FunN=CCCallFuncN::actionWithTarget(this,callfuncN_selector(SpriteActionLayer::repeatForever));

     role3->runAction(CCSequence::actions(role3ScaleTo,role3FunN,NULL));

 }

 void SpriteActionLayer::repeatForever(CCNode* pSender)

 {

     CCRepeatForever* repeat=CCRepeatForever::actionWithAction(CCSkewBy::actionWithDuration(, 37.2f, -37.2f));//歪斜

     pSender->runAction(repeat);

 }

 SpriteActionLayer::~SpriteActionLayer()

 {}

 CCSprite* SpriteActionLayer::BatchAnimatitonSprite(CCLayer* pLayer,CCSprite *pSprite, CCPoint* spriteStartPoint, const char *strFramesFileName,const char *strFramesFileNameImg,const char *strFirstFrameName,const char *strEachFrameName,int frameCount,float frameDelay)

 {

     //CCSpriteBatchNode

     //创建批处理节点，读取plist文件

     CCSpriteFrameCache* cache=CCSpriteFrameCache::sharedSpriteFrameCache();

     cache->addSpriteFramesWithFile(strFramesFileName,strFramesFileNameImg);

     //起始精灵

     pSprite=CCSprite::spriteWithSpriteFrameName(strFirstFrameName);//纹理plist中包含strfirstFrameName

     pSprite->setPosition(ccp(spriteStartPoint->x,spriteStartPoint->y));    

     CCSpriteBatchNode* spritebatch = CCSpriteBatchNode::batchNodeWithFile(strFramesFileNameImg);//与CCSpriteFrameCache同一纹理

     spritebatch->addChild(pSprite);

     pLayer->addChild(spritebatch,);

     //创建逐帧数组

     CCMutableArray<CCSpriteFrame*>* animFrames1=new CCMutableArray<CCSpriteFrame*>(frameCount);

     char str1[]={};

     for(int i=;i<frameCount;i++)

     {

         sprintf(str1,strEachFrameName,i);

         CCSpriteFrame* pFrame=cache->spriteFrameByName( str1 );

         animFrames1->addObject(pFrame);

     }

     CCAnimation* animation1=CCAnimation::animationWithFrames(animFrames1,frameDelay);

     pSprite->runAction(CCRepeatForever::actionWithAction(CCAnimate::actionWithAnimation(animation1,false)));

     animFrames1->release();

     return pSprite;

 }

 //----------------------------------------

 //

 //SpriteActionScene

 //

 //----------------------------------------

 SpriteActionScene::SpriteActionScene()

 {}

 SpriteActionScene::~SpriteActionScene()

 {}

 void SpriteActionScene::onEnter()

 {

     CCScene::onEnter();

     CCLayer* spriteActionLayer=new SpriteActionLayer();

     addChild(spriteActionLayer);

     spriteActionLayer->release();

 }

Learning Cocos2d-x for WP8（8）——动作Action

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