每5秒鐘後下降精靈

Question

我想每5秒鐘後丟棄一些對象。我的問題是，第一次出現在屏幕上的動物會落下，但之後的動物不會掉下來，他們會堅持原來的位置。

我的下探動物代碼：

-(void)dropAnimal 
{ 
    [self performSelector:@selector(dropAnimal) withObject:nil afterDelay:5]; 
    prevojectIndex=objectIndex; 
    prevIndex=currentIndex; 

    float padding = sw*128/768; 
    float x = (float)(arc4random()%(int)(sw-padding*2))+padding; 

    if([SpritesARRAY count]>0) 
    { 
     objectIndex=arc4random()%[SpritesARRAY count]; 
     object=[SpritesARRAY objectAtIndex:objectIndex]; 
     object.falling = YES; 
     currentIndex=arc4random()%[animalsArray count]; 
     [object initWithSpriteFrameName:[animalsArray objectAtIndex:currentIndex]]; 
     object.position = ccp(x, sh*31/32-self.position.y); 

     objectsDictionary=[NSMutableDictionary dictionary]; 
     [objectsDictionary setObject:object forKey:[[NSNumber numberWithInt:objectIndex] stringValue]]; 
     [objectsDictionary retain]; 
     [SpritesARRAY removeObjectAtIndex:objectIndex]; 
     [self animateAnimal]; 

    }  
} 

-(void) animateAnimal 
{ 
    FallAnimal *CurObject=[objectsDictionary objectForKey:[[NSNumber numberWithInt:objectIndex] stringValue]]; 
    [CurObject runAction:[CCMoveTo actionWithDuration:2 position:CGPointMake(CurObject.position.x,90)]]; 
     [CurObject release]; 
    } 

Answer 1

你不應該在這裏釋放CurObject：

-(void) animateAnimal 
{ 
    FallAnimal *CurObject=[objectsDictionary objectForKey:[[NSNumber numberWithInt:objectIndex] stringValue]]; 
    [CurObject runAction:[CCMoveTo actionWithDuration:2 position:CGPointMake(CurObject.position.x,90)]]; 
    [CurObject release]; // <-- makes no sense, you did not retain it! 
}