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【麦可网】Cocos2d-X跨平台游戏开发学习笔记---第十七课：Cocos2

发布时间：2020-12-14 21:34:56 所属栏目：百科 来源：网络整理
导读：【麦可网】 Cocos2d-X 跨平台游戏开发 --- 学习笔记 第十七课：Cocos2D-X动作行为1-5 ===============================================================================================================================================================

【麦可网】Cocos2d-X跨平台游戏开发---学习笔记

第十七课：Cocos2D-X动作行为1-5

=======================================================================================================================================================================

课程目标：

-Cocos2D-X动画系统

课程重点：

-Cocos2D-X动作类型

-Cocos2D-X动作管理器

考核目标：

-Cocos2D-X如何执行动画

-Cocos2D-X动作类型

-Cocos2D-X动作管理器

=======================================================================================================================================================================

动作执行

CCAction*runAction(CCAction*action)


一、动作类型

1.瞬时动作

CCactionstant
- CCPlace			移动到某个位置
- CCHide/CCShow		<span style="white-space:pre">	</span>显示或者隐藏
- CCToggleVisibility	<span style="white-space:pre">	</span>反转显示、隐藏（隐藏时运行后显示，显示时运行后隐藏）
- CCFlipX/CCFlipY		绕X轴或者Y轴翻转
------------------------------------------------------------------------
	CCPlace *place = CCPlace::create(ccp(size.width/2,size.height/2));
	pLabel->runAction(place);

------------------CCHide/CCShow------------------
	CCHide *hide = CCHide::create();
	pLabel->runAction(hide);

	CCShow *show = CCShow::create();
	pLabel->runAction(show);

------------------CCToggleVisibility------------------
	CCToggleVisibility *showhide1 = CCToggleVisibility::create();
	pLabel->runAction(showhide1);

	CCToggleVisibility *showhide2 = CCToggleVisibility::create();
	pLabel->runAction(showhide2);

------------------CCFlipX/CCFlipY------------------
	CCFlipX *flipX = CCFlipX::create(true);
	pLabel->runAction(flipX);

	CCFlipY *flipY = CCFlipY::create(true);
	pLabel->runAction(flipY);


2.延时动作

CCActionInterval
 - CCMoveTo/CCMoveBy			移动到（参数）位置/移动到（本身坐标+参数）的位置
 - CCJumpTo/CCJumpBy			跳到某个地址（to:目的地址，by相对地址）
 - CCBezierTo/CCBezierBy		按着贝塞尔曲线移动
 - CCScaleTo/CCScaleBy			to：缩放到多少；by:缩放多少倍
 - CCRotateTo/CCRotateBy
 - CCBlink				闪烁
 - CCTintTo/CCTintBy			色调变化	注：CCTinitTo不能使用reverse方法。
 - CCFadeTo				变暗到
 - CCFadeIn				淡出
 - CCFadeOut				渐隐

------------------CCMoveTo/CCMoveBy------------------
	CCMoveTo *moveto = CCMoveTo::create(3.0f,ccp(size.width/2,size.height/2+50));
	pLabel->runAction(moveto);

	CCMoveBy *moveby = CCMoveBy::create(3.0f,ccp(-50,-50));
	pLabel->runAction(moveby);

------------------CCJumpTo/CCJumpBy------------------
	CCJumpTo *jumpto = CCJumpTo::create(3.0f,ccp(size.width,size.height),50,3);
	pLabel->runAction(jumpto);

	CCJumpBy *jumpby = CCJumpBy::create(3.0f,ccp(50,50),10,5);
	pLabel->runAction(jumpby);

------------------CCBezierTo/CCBezierBy------------------
	ccBezierConfig  beziercofig;  
	beziercofig.controlPoint_1 = ccp(200,300);  
	beziercofig.controlPoint_2 = ccp( 100,100);  
	beziercofig.endPosition = ccp(100,100);

	CCActionInterval  *bezierby1 = CCBezierBy::create(3.0f,beziercofig);
<span style="white-space:pre">	</span>//原轨迹返回	
<span style="white-space:pre">	</span>CCActionInterval  *bezierby2 = bezierby1->reverse();					
<span style="white-space:pre">	</span>CCAction *actionRe = CCRepeatForever::create(CCSequence::create( bezierby1,bezierby2,NULL)); 
	pLabel->runAction(actionRe);

------------------CCScaleTo/CCScaleBy------------------
	CCScaleTo *scaleto = CCScaleTo::create(3.0f,2.0f,2.0f);		
	pLabel->runAction(scaleto);

	CCScaleBy *scaleby = CCScaleBy::create(3.0f,2.0f);
	pLabel->runAction(scaleby);

------------------CCRotateTo/CCRotateBy------------------
	CCRotateTo *rotateto = CCRotateTo::create(3.0f,45.0f,45.0f);
	pLabel->runAction(rotateto);

	CCRotateBy *rotateby = CCRotateBy::create(3.0f,-45.0f,-45.0f);
	pLabel->runAction(rotateby);

------------------CCBlink------------------
	CCBlink *blink = CCBlink::create(3.0f,5);
	pLabel->runAction(blink);

------------------CCTintTo/CCTintBy------------------
	CCTintTo *tintto = CCTintTo::create(3.0f,255,0);
	pLabel->runAction(tintto);

	CCTintBy *tintby = CCTintBy::create(3.0f,0);
	tintby->reverse();
	pLabel->runAction(tintby);

------------------CCFadeTo------------------
	CCFadeTo *fadeto = CCFadeTo::create(3.0f,100);
	pLabel->runAction(fadeto);

	CCFadeIn *fadein = CCFadeIn::create(3.0f);
	pLabel->runAction(fadein);

------------------CCFadeIn------------------
	CCFadeIn *fadein = CCFadeIn::create(3.0f);
	pLabel->runAction(fadein);

------------------CCFadeOut------------------
	CCFadeOut *fadeout = CCFadeOut::create(3.0f);
	pLabel->runAction(fadeout);


3.组合动作

- 序列：CCSequence
- 同步：CCSpawn
- 重复有限次：CCRepeat
- 反动作：reverse
- 无限重复：CCRepeatForever
- 帧动画：CCAnimate

------------------CCSequence------------------
	CCTintTo *tintto = CCTintTo::create(3.0f,0);
	CCFadeOut *fadeout = CCFadeOut::create(3.0f);
	CCFiniteTimeAction *sequence = CCSequence::create(tintto,fadeout,NULL);
	pLabel->runAction(sequence);

------------------CCSpawn------------------
	CCTintTo *tintto = CCTintTo::create(3.0f,0);
	CCFadeOut *fadeout = CCFadeOut::create(3.0f);
	CCFiniteTimeAction *spawn = CCSpawn::create(tintto,NULL);
	pLabel->runAction(spawn);

------------------CCRepeat------------------
	CCFadeOut *fadeout = CCFadeOut::create(3.0f);
	CCRepeat *repeat = CCRepeat::create(fadeout,5.0f);
	pLabel->runAction(repeat);


------------------reverse/CCRepeatForever------------------
	ccBezierConfig  beziercofig;  
	beziercofig.controlPoint_1 = ccp(200,NULL)); 
	pLabel->runAction(actionRe);

------------------CCAnimate------------------
	CCSize size = CCDirector::sharedDirector()->getWinSize();
	CCSprite *google = CCSprite::create("gg01.png");
	google->setPosition(ccp(size.width/2,size.height/2));
	this->addChild(google,1);

	int framCount = 5;
	char str[50] = {0};
	CCArray *frameArray = CCArray::create();
	for (int i=1; i<=framCount; i++)
	{
		sprintf(str,"gg0%d.png",i);
		CCSpriteFrame *frame = CCSpriteFrame::create(str,CCRectMake(0,320,533));
		frameArray->addObject(frame);
	}
	CCAnimation *animation = CCAnimation::createWithSpriteFrames(frameArray,0.2f);
<span style="white-space:pre">	</span>frameArray->release();
	CCAnimate *animate = CCAnimate::create(animation);
	google->runAction(CCRepeatForever::create(animate));


4.速度变换

- CCEaseIn	<span style="white-space:pre">	</span>又慢到快（速度线性变换）
- CCEaSEOut <span style="white-space:pre">		</span>又快到慢
- CCEaseSineInOut <span style="white-space:pre">	</span>由慢至快再由快至慢
- CCeaseSineIn	  <span style="white-space:pre">	</span>由慢至快（速度正弦变换）
- CCEaseSineOut <span style="white-space:pre">	</span>由快至慢（速度正弦变换）
- CCEaseSineInOut<span style="white-space:pre">	</span>由慢至快再由快至慢
- CCEaseExponentialIn <span style="white-space:pre">	</span>由慢至极快（速度指数级变换）
- CCEaseExponentialOut<span style="white-space:pre">	</span>由快至极慢（速度指数级变换）
- CCEaseExponentialInOut 由慢至极快再由快至极慢
- CCSpeed 人工设定速度，通过setSpeed不断调整

参考代码：tests->ActionsEaseTest

-------------------CCEaseIn/CCEaSEOut -------------------
#define CCCA(x)   (x->copy()->autorelease())
void SpriteEase::onEnter()
{
    EaseSpriteDemo::onEnter();
    
    CCActionInterval* move = CCMoveBy::create(3,ccp(VisibleRect::right().x-130,0));
    CCActionInterval* move_back = move->reverse();
    
    CCActionInterval* move_ease_in = CCEaseIn::create((CCActionInterval*)(move->copy()->autorelease()),2.5f);
    CCActionInterval* move_ease_in_back = move_ease_in->reverse();
    
    CCActionInterval* move_ease_out = CCEaSEOut::create((CCActionInterval*)(move->copy()->autorelease()),2.5f);
    CCActionInterval* move_ease_out_back = move_ease_out->reverse();
    
    CCDelayTime *delay = CCDelayTime::create(0.25f);
    
    CCSequence* seq1 = CCSequence::create(move,delay,move_back,CCCA(delay),NULL);
    CCSequence* seq2 = CCSequence::create(move_ease_in,move_ease_in_back,NULL);
    CCSequence* seq3 = CCSequence::create(move_ease_out,move_ease_out_back,NULL);
    
    
    CCAction *a2 = m_grossini->runAction(CCRepeatForever::create(seq1));
    a2->setTag(1);

    CCAction *a1 = m_tamara->runAction(CCRepeatForever::create(seq2));
    a1->setTag(1);

    CCAction *a = m_kathia->runAction(CCRepeatForever::create(seq3));
    a->setTag(1);

    schedule(schedule_selector(SpriteEase::testStopAction),6.25f);
}

void SpriteEase::testStopAction(float dt)
{
    unschedule(schedule_selector(SpriteEase::testStopAction));
    m_tamara->stopActionByTag(1);
    m_kathia->stopActionByTag(1);
    m_grossini->stopActionByTag(1);
}

-------------------CCSpeed-------------------
void SpeedTest::onEnter()
{
    EaseSpriteDemo::onEnter();
    
    CCSize s = CCDirector::sharedDirector()->getWinSize();

    // rotate and jump
    CCActionInterval *jump1 = CCJumpBy::create(4,ccp(-s.width+80,0),100,4);
    CCActionInterval *jump2 = jump1->reverse();
    CCActionInterval *rot1 = CCRotateBy::create(4,360*2);
    CCActionInterval *rot2 = rot1->reverse();
    
    CCSequence* seq3_1 = CCSequence::create(jump2,jump1,NULL);
    CCSequence* seq3_2 = CCSequence::create( rot1,rot2,NULL);
    CCSpawn* spawn = CCSpawn::create(seq3_1,seq3_2,NULL);

    //创建速度可改变的动画
    CCSpeed* action = CCSpeed::create(CCRepeatForever::create(spawn),1.0f);
    action->setTag(kTagAction1);
    
    CCAction* action2 = (CCAction*)(action->copy()->autorelease());
    CCAction* action3 = (CCAction*)(action->copy()->autorelease());

    action2->setTag(kTagAction1);
    action3->setTag(kTagAction1);
    
    m_grossini->runAction(action2);
    m_tamara->runAction(action3);
    m_kathia->runAction(action);
    
    this->schedule(schedule_selector(SpeedTest::altertime),1.0f);//:@selector(altertime:) interval:1.0f];
}

void SpeedTest::altertime(float dt)
{    
    CCSpeed* action1 = (CCSpeed*)(m_grossini->getActionByTag(kTagAction1));
    CCSpeed* action2 = (CCSpeed*)(m_tamara->getActionByTag(kTagAction1));
    CCSpeed* action3 = (CCSpeed*)(m_kathia->getActionByTag(kTagAction1));
    
    //设置随机动画速度
    action1->setSpeed( CCRANDOM_MINUS1_1() * 2 );
    action2->setSpeed( CCRANDOM_MINUS1_1() * 2 );
    action3->setSpeed( CCRANDOM_MINUS1_1() * 2 );
}


二、扩展动作

延时：
 - CCDelayTime
函数调用：
 - CCCallFunc（无参）
 - CCCallFuncN（当前对象CCNode）
 - CCCallfuncND(当前对象，Void指针)

-------------------函数调用-------------------
void ActionCallFunc::onEnter()
{
    ActionsDemo::onEnter();

    centerSprites(3);

//执行完动画后调用函数
    CCFiniteTimeAction*  action = CCSequence::create(
        CCMoveBy::create(2,ccp(200,0)),CCCallFunc::create(this,callfunc_selector(ActionCallFunc::callback1)),NULL);

    CCFiniteTimeAction*  action2 = CCSequence::create(
        CCScaleBy::create(2,2),CCFadeOut::create(2),CCCallFuncN::create(this,callfuncN_selector(ActionSequence2::callback2)),NULL);

    CCFiniteTimeAction*  action3 = CCSequence::create(
        CCRotateBy::create(3,360),CCCallFuncND::create(this,callfuncND_selector(ActionSequence2::callback3),(void*)0xbebabeba),NULL);

    m_grossini->runAction(action);
    m_tamara->runAction(action2);
    m_kathia->runAction(action3);
}


void ActionCallFunc::callback1()
{
    CCSize s = CCDirector::sharedDirector()->getWinSize();
    CCLabelTTF *label = CCLabelTTF::create("callback 1 called","Marker Felt",16);
    label->setPosition(ccp( s.width/4*1,s.height/2));

    addChild(label);
}

void ActionCallFunc::callback2(CCNode* pSender)
{
    CCSize s = CCDirector::sharedDirector()->getWinSize();
    CCLabelTTF *label = CCLabelTTF::create("callback 2 called",16);
    label->setPosition(ccp( s.width/4*2,s.height/2));

    addChild(label);
}

void ActionCallFunc::callback3(CCNode* pTarget,void* data)
{
    CCSize s = CCDirector::sharedDirector()->getWinSize();
    CCLabelTTF *label = CCLabelTTF::create("callback 3 called",16);
    label->setPosition(ccp( s.width/4*3,s.height/2));
    addChild(label);
}


三、动作管理器（ActionManager）

维护一个动作表（hash表） 

CCAction * CCNode::runAction(CCAction* action)
{
    CCAssert( action != NULL,"Argument must be non-nil");
    m_pActionManager->addAction(action,this,!m_bRunning);
    return action;
}

利用动作管理器暂停动作，因为动作管理器是全局的，这样就避免第一个类要停止第二个类中的动作需要传递参数的麻烦。
    CCDirector* pDirector = CCDirector::sharedDirector();
    pDirector->getActionManager()->pauseTarget(pGrossini);
    pGrossini->runAction(CCRotateBy::create(2,360));


===================================================================

总结：

动画在游戏中占据着举足轻重的位置，必须拿下。

开心一刻：

上农艺课时，老师提问：“什么时候摘西瓜最合适？”一个学生不假思索地回答：“在看瓜人睡熟了的时候。”

【麦可网】Cocos2d-X跨平台游戏开发---教程下载:http://pan.baidu.com/s/1kTio1Av

【麦可网】Cocos2d-X跨平台游戏开发---笔记系列:http://blog.csdn.net/qiulanzhu

（编辑：李大同）

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