cocos2dx落叶效果 

  1 //创建叶子
  2 void HelloWorld::leafInit()
  3 {
  4  CCSprite *spriteLeaf1 = CCSprite::create("mao.png");  
  5  spriteLeaf1->setRotation(30);//旋转角度  
  6  spriteLeaf1->setAnchorPoint(ccp(0.5, 3));//设置精灵锚点  
  7  spriteLeaf1->setPosition(ccp(450, 500));//叶子1第一次初始位置  
  8  spriteLeaf1->setScale(0.5);//设置叶片大小 
  9  this->addChild(spriteLeaf1,100,TAG_LEAF1);  
 10  this->playLeafAnim(spriteLeaf1);//调用play函数播实现叶动作 
 11  CCSprite *spriteLeaf2 = CCSprite::create("mao.png");  
 12  spriteLeaf2->setRotation(50);  
 13  spriteLeaf2->setAnchorPoint(ccp(0.5, 3));  
 14  spriteLeaf2->setPosition(ccp(200, 540));  
 15  spriteLeaf2->setScale(0.5); 
 16  this->addChild(spriteLeaf2,101,TAG_LEAF2);  
 17  this->playLeafAnim(spriteLeaf2);
 18 }
 19 
 20 void HelloWorld::playLeafAnim(CCSprite *spriteLeaf)  
 21 {  
 22  int iTag = spriteLeaf->getTag(); 
 23  CCLog("playtag%d", iTag);  
 24  time_t time, roTime;  
 25  float fAngle1, fAngle2;  
 26  if (iTag == TAG_LEAF1)  
 27  {  
 28   CCLog("tag1");  
 29   time = 10;//叶子下落的时间  
 30   roTime = 2.5;//叶子单向摆动一次时间  
 31   fAngle1 = -80;//叶子逆时针摆动角度  
 32   fAngle2 = 80;//顺时针摆动角度  
 33  }  
 34  else  
 35  {  
 36   CCLog("tag2");  
 37   time = 14;  
 38   roTime = 3.2;  
 39   fAngle1 = -100;  
 40   fAngle2 = 100;  
 41  }  
 42  CCLog("rotime%ffAngle1%ffAngle2%f",roTime, fAngle1,fAngle1);  
 43  //随机生成叶子横向偏移值  
 44  srand((UINT)GetCurrentTime());  
 45  int iRandPos = rand() % 250;  
 46  CCLog("Pianyi%d", iRandPos);  
 47  //叶子所运动到的位置  
 48  CCMoveTo *moveTo = CCMoveTo::create(time, ccp(CCDirector::sharedDirector()->getWinSize().width - iRandPos, 30));  
 49  //CCCallFuncN *actDone = CCCallFuncN::create(this, callfuncN_selector(HelloWorld::resetLeafPos));  
 50  CCFadeOut *actDone = CCFadeOut::create(0.2f);
 51  CCFiniteTimeAction *putdown = CCSequence::create(moveTo, actDone, NULL);  
 52  //叶子旋转动作  
 53  CCRotateBy *rotaBy1 = CCRotateBy::create(roTime, fAngle1);  
 54  CCRotateBy *rotaBy2 = CCRotateBy::create(roTime, fAngle2); 
 55  //叶子翻转动作  
 56  spriteLeaf->setVertexZ(60);//设置深度抬高60，避免出现使用CCOrbitCamera实现空间翻转时产生错位和遮挡等问题  
 57  //CCDirector::sharedDirector()->setDepthTest(false);  
 58  //关闭深度测试同样可以避免上述问题，不过，推荐使用深度设置setVertexZ来正确解决，因为有时你可能需要遮挡的效果，关闭深度测试后将造成遮挡效果的缺失  
 59  CCOrbitCamera * orbit = CCOrbitCamera::create(8, 1, 0, 0, 360, 45, 0);  
 60  //让树叶精灵始终执行三维翻转的动作  
 61  CCRepeat *fz3d = CCRepeat::create(orbit, -1);//无限循环执行叶片翻转的动作  
 62  //CCRepeatForever *fz3d = CCRepeatForever::actionWithAction(orbit);  
 63  //由于下面使用CCSpawn同时执行动作，所以不可以使用无限次数类型的动作，而因使用有线次数循环CCRepeat将循环次数设置为-1 
 64  //用CCEaseInOut包装落叶摆动的动作，让树叶的进入、出现更自然（淡入淡出效果）  
 65  CCEaseInOut *ease1 = CCEaseInOut::create(rotaBy1, 3);  
 66  CCEaseInOut *ease2 = CCEaseInOut::create(rotaBy2, 3);  
 67  //摆动动作合成  
 68  CCFiniteTimeAction *seq2 = CCSequence::create(ease1, ease2, NULL);//依次执行顺时针、逆时针摆动  
 69  CCRepeat *baidong = CCRepeat::create(seq2, -1);//摆动合成 
 70  //动作执行->同时执行所有动作  
 71  spriteLeaf->runAction(CCSpawn::create(putdown, baidong, fz3d, NULL)); 
 72 }
 73  
 74 
 75 void HelloWorld::resetLeafPos(CCNode* sender)  
 76 {  
 77  int iTag = int(sender->getTag());//获得被重置叶片的标签  
 78  int iZoder = int(sender->getZOrder());//获取被重置叶片的z轴值  
 79  sender->removeFromParentAndCleanup(true);//清除已经落到底点的叶子 
 80  char sImg[15] = "img_yezi_1.png";  
 81  _snprintf(sImg, sizeof(sImg), "img_yezi_%d.png", iTag % 100); 
 82  CCPoint pos;  
 83  float fAngle;  
 84  //随机生成叶子的起始位置  
 85  srand((UINT)GetCurrentTime());  
 86  int iRand = (rand() % 200);  
 87  if (iTag == TAG_LEAF1)  
 88  {  
 89   pos = ccp(iRand, 600);  
 90   fAngle = 30;  
 91  }  
 92  else  
 93  {  
 94   pos = ccp(iRand, 570);  
 95   fAngle = 50;  
 96  }  
 97  //重新生成新的叶片，在起点处释放  
 98  CCSprite *spriteLeaf = CCSprite::create(sImg);  
 99  spriteLeaf->setScale(0.5);  
100  spriteLeaf->setAnchorPoint(ccp(0.5, 3));  
101  spriteLeaf->setRotation(fAngle);  
102  spriteLeaf->setPosition(pos); 
103  this->addChild(spriteLeaf, iZoder,iTag);  
104  this->playLeafAnim(spriteLeaf);//重置后的树叶再次执行飘落动作  
105 }

 

posted @ 2014-04-10 17:42  无语男  阅读(125)  评论(0)    收藏  举报