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
1 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)
2 {
3 //CCSpriteBatchNode
4 //创建批处理节点，读取plist文件
5 CCSpriteFrameCache* cache=CCSpriteFrameCache::sharedSpriteFrameCache();
6 cache->addSpriteFramesWithFile(strFramesFileName,strFramesFileNameImg);
7
8 //起始精灵
9 pSprite=CCSprite::spriteWithSpriteFrameName(strFirstFrameName);//纹理plist中包含strfirstFrameName
10 pSprite->setPosition(ccp(spriteStartPoint->x,spriteStartPoint->y));
11
12 CCSpriteBatchNode* spritebatch = CCSpriteBatchNode::batchNodeWithFile(strFramesFileNameImg);//与CCSpriteFrameCache同一纹理
13 spritebatch->addChild(pSprite);
14 pLayer->addChild(spritebatch,1);
15
16 //创建逐帧数组
17 CCMutableArray<CCSpriteFrame*>* animFrames1=new CCMutableArray<CCSpriteFrame*>(frameCount);
18 char str1[100]={0};
19 for(int i=0;i<frameCount;i++)
20 {
21 sprintf(str1,strEachFrameName,i);
22 CCSpriteFrame* pFrame=cache->spriteFrameByName( str1 );
23 animFrames1->addObject(pFrame);
24 }
25
26 CCAnimation* animation1=CCAnimation::animationWithFrames(animFrames1,frameDelay);
27 pSprite->runAction(CCRepeatForever::actionWithAction(CCAnimate::actionWithAnimation(animation1,false)));
28
29 animFrames1->release();
30 return pSprite;
31 }
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
1 //重复动作
2 CCSprite *role0=CCSprite::spriteWithFile("Sprite/Role.png");
3 role0->setPosition(ccp(100,s.height-100));
4 addChild(role0,1);
5 CCRotateBy* role0RotateBy=CCRotateBy::actionWithDuration(2.0f,360);
6 CCRepeatForever* role0Repeat=CCRepeatForever::actionWithAction(role0RotateBy);
7 role0->runAction(role0Repeat);
Sprite循环不停地旋转
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
EaseExponentialIn
EaseExponentialOut
EaseExponentialInOut
2.赛因缓冲
EaseSineIn
EaseSineOut
EaseSineInOut
3.弹性缓冲
EaseElasticIn
EaseElasticOut
EaseElasticInOut
4.跳跃缓冲
EaseBounceIn
EaseBounceOut
EaseBounceInOut
5.回震缓冲
EaseBackIn
EaseBackOut
EaseBackInOut
实例
1 //流畅动画 2 CCSprite* role1=NULL; 3 role1=SpriteActionLayer::BatchAnimatitonSprite(this,role1,new CCPoint(100,s.height/2),"Sprite/Plist/RoleRun.plist","Sprite/Plist/RoleRun.png","RoleRun0.png","RoleRun%d.png",10,0.2f); 4 CCMoveTo* role1Move=CCMoveTo::actionWithDuration(5,CCPointMake(s.width-100,s.height/2));//CCMoveTo绝对位置移动 5 CCEaseInOut* role1MoveEase=CCEaseInOut::actionWithAction(role1Move,4);//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 6 role1->runAction(role1MoveEase);
可见，Sprite开始缓慢移动——加速——缓慢停止。
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
1 //动作序列 2 CCSprite* role2=NULL; 3 role2=SpriteActionLayer::BatchAnimatitonSprite(this,role2,new CCPoint(100,s.height/4),"Sprite/Plist/Role2Run.plist","Sprite/Plist/Role2Run.png","Role2Run0.png","Role2Run%d.png",10,0.3f); 4 CCMoveBy* role2MoveBy=CCMoveBy::actionWithDuration(5,CCPointMake(500,0));//CCMoveBy相对位置移动 5 CCJumpBy* role2JumpBy=CCJumpBy::actionWithDuration(1,CCPointMake(-500,0),100,1);//CCJumpBy相当位置jump 6 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
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
1 //瞬时动作
2 CCSprite* role3=CCSprite::spriteWithFile("Sprite/Role.png");
3 role3->setPosition(ccp(s.width-100,s.height-100));
4 addChild(role3,1);
5 CCScaleTo * role3ScaleTo=CCScaleTo::actionWithDuration(2,2.0f);
6 CCCallFuncN* role3FunN=CCCallFuncN::actionWithTarget(this,callfuncN_selector(SpriteActionLayer::repeatForever));
7 role3->runAction(CCSequence::actions(role3ScaleTo,role3FunN,NULL));
repeatForever方法
1 void SpriteActionLayer::repeatForever(CCNode* pSender)
2 {
3 CCRepeatForever* repeat=CCRepeatForever::actionWithAction(CCSkewBy::actionWithDuration(5, 37.2f, -37.2f));//歪斜
4 pSender->runAction(repeat);
5 }
执行完ScaleTo后执行SkewBy
完整源码
SpriteActionTest.h
1 #ifndef _SPRITE_ACTION_TEST_
2 #define _SPRITE_ACTION_TEST_
3
4 #include "cocos2d.h"
5 using namespace cocos2d;
6
7 class SpriteActionScene:public CCScene
8 {
9 public:
10 SpriteActionScene();
11 ~SpriteActionScene();
12
13 virtual void onEnter();
14
15 };
16
17
18
19 class SpriteActionLayer:public CCLayer
20 {
21 public:
22 SpriteActionLayer();
23 ~SpriteActionLayer();
24
25 public:
26 void repeatForever(CCNode* pTarget);
27 CCSprite* BatchAnimatitonSprite(CCLayer* pLayer,CCSprite *pSprite,CCPoint* spriteStartPoint,const char *strFramesFileName,const char *strFramesFileNameImg,const char *strFirstFrameName,const char *strEachFrameName,int frameCount,float frameDelay);
28 };
29
30
31
32 #endif
SpriteActionTest.cpp
1 #include "pch.h"
2 #include "Classes\SpriteActionTest.h"
3
4
5 //----------------------------------------
6 //
7 //SpriteActionLayer
8 //
9 //----------------------------------------
10 SpriteActionLayer::SpriteActionLayer()
11 {
12 CCSize s=CCDirector::sharedDirector()->getWinSize();
13
14 //重复动作
15 CCSprite *role0=CCSprite::spriteWithFile("Sprite/Role.png");
16 role0->setPosition(ccp(100,s.height-100));
17 addChild(role0,1);
18 CCRotateBy* role0RotateBy=CCRotateBy::actionWithDuration(2.0f,360);
19 CCRepeatForever* role0Repeat=CCRepeatForever::actionWithAction(role0RotateBy);
20 role0->runAction(role0Repeat);
21
22 //流畅动画
23 CCSprite* role1=NULL;
24 role1=SpriteActionLayer::BatchAnimatitonSprite(this,role1,new CCPoint(100,s.height/2),"Sprite/Plist/RoleRun.plist","Sprite/Plist/RoleRun.png","RoleRun0.png","RoleRun%d.png",10,0.2f);
25 CCMoveTo* role1Move=CCMoveTo::actionWithDuration(5,CCPointMake(s.width-100,s.height/2));//CCMoveTo绝对位置移动
26 CCEaseInOut* role1MoveEase=CCEaseInOut::actionWithAction(role1Move,4);//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
27 role1->runAction(role1MoveEase);
28
29 //动作序列
30 CCSprite* role2=NULL;
31 role2=SpriteActionLayer::BatchAnimatitonSprite(this,role2,new CCPoint(100,s.height/4),"Sprite/Plist/Role2Run.plist","Sprite/Plist/Role2Run.png","Role2Run0.png","Role2Run%d.png",10,0.3f);
32 CCMoveBy* role2MoveBy=CCMoveBy::actionWithDuration(5,CCPointMake(500,0));//CCMoveBy相对位置移动
33 CCJumpBy* role2JumpBy=CCJumpBy::actionWithDuration(1,CCPointMake(-500,0),100,1);//CCJumpBy相当位置jump
34 role2->runAction(CCSequence::actions(role2MoveBy,role2JumpBy,NULL));
35
36 //瞬时动作
37 CCSprite* role3=CCSprite::spriteWithFile("Sprite/Role.png");
38 role3->setPosition(ccp(s.width-100,s.height-100));
39 addChild(role3,1);
40 CCScaleTo * role3ScaleTo=CCScaleTo::actionWithDuration(2,2.0f);
41 CCCallFuncN* role3FunN=CCCallFuncN::actionWithTarget(this,callfuncN_selector(SpriteActionLayer::repeatForever));
42 role3->runAction(CCSequence::actions(role3ScaleTo,role3FunN,NULL));
43 }
44
45 void SpriteActionLayer::repeatForever(CCNode* pSender)
46 {
47 CCRepeatForever* repeat=CCRepeatForever::actionWithAction(CCSkewBy::actionWithDuration(5, 37.2f, -37.2f));//歪斜
48 pSender->runAction(repeat);
49 }
50
51 SpriteActionLayer::~SpriteActionLayer()
52 {}
53
54 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)
55 {
56 //CCSpriteBatchNode
57 //创建批处理节点，读取plist文件
58 CCSpriteFrameCache* cache=CCSpriteFrameCache::sharedSpriteFrameCache();
59 cache->addSpriteFramesWithFile(strFramesFileName,strFramesFileNameImg);
60
61 //起始精灵
62 pSprite=CCSprite::spriteWithSpriteFrameName(strFirstFrameName);//纹理plist中包含strfirstFrameName
63 pSprite->setPosition(ccp(spriteStartPoint->x,spriteStartPoint->y));
64
65 CCSpriteBatchNode* spritebatch = CCSpriteBatchNode::batchNodeWithFile(strFramesFileNameImg);//与CCSpriteFrameCache同一纹理
66 spritebatch->addChild(pSprite);
67 pLayer->addChild(spritebatch,1);
68
69 //创建逐帧数组
70 CCMutableArray<CCSpriteFrame*>* animFrames1=new CCMutableArray<CCSpriteFrame*>(frameCount);
71 char str1[100]={0};
72 for(int i=0;i<frameCount;i++)
73 {
74 sprintf(str1,strEachFrameName,i);
75 CCSpriteFrame* pFrame=cache->spriteFrameByName( str1 );
76 animFrames1->addObject(pFrame);
77 }
78
79 CCAnimation* animation1=CCAnimation::animationWithFrames(animFrames1,frameDelay);
80 pSprite->runAction(CCRepeatForever::actionWithAction(CCAnimate::actionWithAnimation(animation1,false)));
81
82 animFrames1->release();
83 return pSprite;
84 }
85
86 //----------------------------------------
87 //
88 //SpriteActionScene
89 //
90 //----------------------------------------
91
92 SpriteActionScene::SpriteActionScene()
93 {}
94
95 SpriteActionScene::~SpriteActionScene()
96 {}
97
98 void SpriteActionScene::onEnter()
99 {
100 CCScene::onEnter();
101 CCLayer* spriteActionLayer=new SpriteActionLayer();
102 addChild(spriteActionLayer);
103 spriteActionLayer->release();
104 }
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时间： 2024-10-23 16:27:49