Cocos2d CCScale

我想創建脈衝平臺並在CCScale中遇到一些問題。我有我的平臺，NSMuttableArray類的一些對象。Cocos2d CCScale

@interface Platforms : CCNode{ 

    CCSprite *platformSprite; 
    int typeP; 

} 
@property (nonatomic, retain) CCSprite *platformSprite; 
@property int typeP;

@implementation

- (id)init:(int)type 
{ 
    self = [super init]; 
    if (self != nil) { 
     typeP = type; 
     platformSprite = [CCSprite spriteWithFile:@"ball.png" rect:CGRectMake(0, 0, 51, 52)]; 
     [self addChild:platformSprite]; 
    } 
    return self; 
}

我添加的所有對象篩選

for (int i = 0 ; i < [_array count]; i++) { 
     Platforms* _platforms2 = [[_array objectAtIndex:i ]retain]; 
     [self addChild:_platforms2]; 
     [_platforms2 release]; 
}

所以...我想獲得的所有對象，其中typeP == 1 我得到這一切的對象並將它們添加到NSMuttableArray

for (int i = 0 ; i < [platformsArrayOnScreen count]; i++) { 
     Platforms* temp = [platformsArrayOnScreen objectAtIndex:i]; 
     if (temp.typeP == 1) { 
      [scaleArray addObject:temp]; 
}

比我想所有的人擴展到[CCScaleTo actionWithDuration:0.5 scale:0.2f]; 和規模[CCScaleTo actionWithDuration:0.5 scale:1.0f];

後，我創建功能[self schedule:@selector(checkForScale:)];

-(void)checkForScale:(ccTime)dt { 

    for (int i = 0; i < [scaleArray count]; i++) { 
     Platforms* temp2 = [scaleArray objectAtIndex:i]; 
     if ([temp2.platformSprite scale] == 1.0f) { 
      [self scaleDown:temp2]; 
     } 
     if([temp2.platformSprite scale] == 0.2f){ 
      [self scaleUp:temp2]; 
     } 
    } 
} 

-(void)scaleDown:(Platforms *)tempSprite { 

    id scaleDown = [CCScaleTo actionWithDuration:0.3 scaleX:0.2f scaleY:0.2f]; 
    [tempSprite.platformSprite runAction:scaleDown]; 

} 
-(void)scaleUp:(Platforms *)tempSprite { 

    id scaleUp = [CCScaleTo actionWithDuration:0.3 scaleX:1.0f scaleY:1.0f]; 
    [tempSprite runAction:scaleUp]; 

}

但它不工作（（我的平臺不脈動。我的問題在哪裏？謝謝。

來源

2012-01-19 my_name

分別稱爲比例放大/按比例縮小？你應該在那裏設置一個斷點並找出答案。我能想象的唯一事情就是與浮點值相等是棘手的。即規模性質可能不完全是0.2f，但0.199999999f或0.200000001f – LearnCocos2D

如果你想做到這一點，你可以CCSequence。

[tempSprite.platformSprite runAction:[CCSequence actions:[CCScaleTo actionWithDuration:3.0f scale:0.2f],[CCScaleTo actionWithDuration:3.0f scale:1.0f], nil]];

不必做這一切：

-(void)checkForScale:(ccTime)dt 
-(void)scaleDown:(Platforms *)tempSprite 
-(void)scaleUp:(Platforms *)tempSprite

來源

2012-01-20 05:09:29 Haroon

回答

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