cocos2d中实现触摸按钮换图效果计划
发布时间：2021-11-22 14:01:04 所属栏目：教程 来源：互联网
导读：主要原理是当TouchBegan时根据按钮下的坐标把对应按钮换成按下的效果图，当TouchMoved时根据移动previousLocationInView坐标取消对应按钮的按下效果图，即把按钮还原成未按下的图，当TouchEnded时根据抬手的坐标取消对应按钮的按下效果图，也即把按钮还原成
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主要原理是当TouchBegan时根据按钮下的坐标把对应按钮换成按下的效果图，当TouchMoved时根据移动previousLocationInView坐标取消对应按钮的按下效果图，即把按钮还原成未按下的图，当TouchEnded时根据抬手的坐标取消对应按钮的按下效果图，也即把按钮还原成未按下的图，直接上代码： -(id) init { // always call "super" init // Apple recommends to re-assign "self" with the "super" return value if( (self=[super init])) { [self show]; self.isTouchEnabled=YES; } return self; } -(void) show { CGSize s = [[CCDirector sharedDirector] winSize]; //触摸数组，用于存放要检测触摸的精灵 movableSprites = [[NSMutableArray alloc] init]; [[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"MineButton.plist"]; //根据一个plist文件名构建CCSpriteFrame对象并添加到内存池中，就是加载要用到的各种图片 //背景图 CCSprite *bg = [CCSprite spriteWithFile:@"bg.png"]; bg.position=ccp(s.width/2,s.height/2); [self addChild:bg z:-1 tag:99]; //levelBt等级按钮 levelBt=[CCSprite spriteWithSpriteFrameName:@"btnLevel.png"]; levelBt.position=ccp(170,levelBt.contentSize.height/2+50); [self addChild:levelBt z:1 tag:103]; [movableSprites addObject:levelBt]; //scoreBt按钮 scoreBt=[CCSprite spriteWithSpriteFrameName:@"btnScore.png"]; scoreBt.position=ccp(230,scoreBt.contentSize.height/2+50); [self addChild:scoreBt z:1 tag:104]; [movableSprites addObject:scoreBt]; //moreBt按钮 moreBt=[CCSprite spriteWithSpriteFrameName:@"btnMore.png"]; moreBt.position=ccp(290,moreBt.contentSize.height/2+50); [self addChild:moreBt z:1 tag:105]; [movableSprites addObject:moreBt]; } //////////////////////////////////////////////////////// #pragma mark Touch Method //更换触摸协议 -(void) registerWithTouchDispatcher { [[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:-1 swallowsTouches:YES]; //priority参数越小优先级越高 } -(BOOL) ccTouchBegan:(UITouch*)touch withEvent:(UIEvent *)event { BOOL hasTouched = NO; CGPoint touchlocation = [touch locationInView: [touch view]]; touchlocation =[[CCDirector sharedDirector] convertToGL:touchlocation]; CCSprite * newSprite = nil; if (newSprite == nil) { for (CCSprite *sprite in movableSprites) { if (CGRectContainsPoint(sprite.boundingBox, touchlocation)) { newSprite = sprite; break; } } } int na = [newSprite tag]; switch (na) { case 103: CCLOG(@"levelBt"); //换按下的效果图 [GameHelper changeImageBtn:newSprite imagePath:@"btnLeveled.png"]; hasTouched = YES; break; case 104: CCLOG(@"scoreBt"); //换按下的效果图 [GameHelper changeImageBtn:newSprite imagePath:@"btnScoreed.png"]; hasTouched = YES; break; case 105: CCLOG(@"moreBt"); //换按下的效果图 [GameHelper changeImageBtn:newSprite imagePath:@"btnMoreed.png"]; hasTouched = YES; break; default: hasTouched = NO; break; } if (hasTouched==YES) { CCLOG(@"吞并触摸事件"); //按中本层的按钮 return YES; } else { CCLOG(@"传递触摸事件"); //未按中本层的按钮 return NO; } } -(void)ccTouchMoved:(UITouch *)touch withEvent:(UIEvent *)event{ //获取旧的坐标，即按下时的坐标，移动了就表示取消对应按钮的动作，那么就要还原按钮原图 CGPoint oldTouchLocation=[touch previousLocationInView:touch.view]; oldTouchLocation=[[CCDirector sharedDirector] convertToGL:oldTouchLocation]; CCSprite * newSprite = nil; if (newSprite == nil) { for (CCSprite *sprite in movableSprites) { if (CGRectContainsPoint(sprite.boundingBox, oldTouchLocation)) { newSprite = sprite; break; } } } int na = [newSprite tag]; switch (na) { case 103: CCLOG(@"levelBt"); //换未按下的效果图 [GameHelper changeImageBtn:newSprite imagePath:@"btnLevel.png"]; break; case 104: CCLOG(@"scoreBt"); //换未按下的效果图 [GameHelper changeImageBtn:newSprite imagePath:@"btnScore.png"]; break; case 105: CCLOG(@"moreBt"); //换未按下的效果图 [GameHelper changeImageBtn:newSprite imagePath:@"btnMore.png"]; break; default: break; } } -(void) ccTouchEnded:(UITouch*)touch withEvent:(UIEvent *)event { CGPoint touchlocation = [touch locationInView: [touch view]]; touchlocation =[[CCDirector sharedDirector] convertToGL:touchlocation]; CCSprite * newSprite = nil; if (newSprite == nil) { for (CCSprite *sprite in movableSprites) { if (CGRectContainsPoint(sprite.boundingBox, touchlocation)) { newSprite = sprite; break; } } } int na = [newSprite tag]; switch (na) { case 103: CCLOG(@"levelBt"); //换按下的效果图 [GameHelper changeImageBtn:newSprite imagePath:@"btnLevel.png"]; //执行按钮触发的函数 [self showSelectLevelLayer]; break; case 104: CCLOG(@"scoreBt"); //换按下的效果图 [GameHelper changeImageBtn:newSprite imagePath:@"btnScore.png"]; //执行按钮触发的函数 [self showScoreLayer]; break; case 105: CCLOG(@"moreBt"); //换按下的效果图 [GameHelper changeImageBtn:newSprite imagePath:@"btnMore.png"]; //执行按钮触发的函数 [self showMoreLayer]; break; default: break; } } /////////////////////////////////////////////////////////// -(void)showSelectLevelLayer { } -(void)showScoreLayer { } -(void)showMoreLayer { } ///////////////////////////////////////////////////////////  （编辑：江门站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
