Cocos2d iphone 关于CCBitmapFontAtlas效果（按一显示）

我正在尝试使用CCBitmapFontAtlas制作效果，以下是我想要的：

字符串表示ABCDEFG正在逐个显示，不会显示每个字符串 直到前一个完全显示

以下是我尝试过的：

-(id) init

{ 如果self=[super init]{

    label = [CCBitmapFontAtlas bitmapFontAtlasWithString:@"ABC" fntFile:@"bitmapFontTest.fnt"];
    [self addChild:label];

    CGSize s = [[CCDirector sharedDirector] winSize];

    label.position = ccp(s.width/2, s.height/2);
    label.anchorPoint = ccp(0.5f, 0.5f);
    label.visible = NO; //hide it first

    [[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];
}
return self;

}

{ CCSprite AChar=CCSprite[label getChildByTag:0]； CCSprite BChar=CCSprite[label getChildByTag:1]； CCSprite CChar=CCSprite[label getChildByTag:2]

id fade_in = [CCFadeIn actionWithDuration:3];

label.visible = YES;

[AChar runAction:fade_in];
[BChar runAction:fade_in];
[CChar runAction:fade_in];

return YES;

}

效果是一旦我触摸屏幕，ABC就会消失，然后我尝试使用 CallFuncND，在显示当前字符串时调用要淡入的下一个字符串。 但这似乎使事情变得非常复杂

有没有更简单的方法来达到这个效果？

---

如果您有任何建议，我们将不胜感激。

我觉得您的建议是正确的。您可以将每个字母作为一个单独的精灵存储在一个数组中，然后逐个运行它们

调用功能可通过以下方式启动：

[self displayNextSprite:spriteArray nextIndex:0];

其功能是：

 // Warning, This assumes you are not passing it an empty array, you may want to put in a check for that
-(void)displayNextSprite:(NSMutableArray*)spriteArray nextIndex:(NSUInteger)nextIndex
{

   CCSprite *nextSprite = [spriteArray objectAtIndex:nextIndex];

   id action1 = [CCFadeIn actionWithDuration:3];
   // or = [CCPropertyAction actionWithDuration:3 key:@"opacity" from:0 to:255];

   // The last letter
   if(nextIndex == ([spriteArray count] - 1))
   {
      [nextSprite runAction:action1];
   }
   else // continue to the next letter
   {
      id callFunc = [CCCallFunc actionWithTarget:self selector:@selector(displayNextSprite:spriteArray nextIndex:nextIndex+1)];
      id sequence = [CCSequence actionOne:action1 two:callFunc];
      [nextSprite runAction:sequence];
   }
}

 // Warning, This assumes you are not passing it an empty array, you may want to put in a check for that
-(void)displayNextSprite:(NSMutableArray*)spriteArray nextIndex:(NSUInteger)nextIndex
{

   CCSprite *nextSprite = [spriteArray objectAtIndex:nextIndex];

   id action1 = [CCFadeIn actionWithDuration:3];
   // or = [CCPropertyAction actionWithDuration:3 key:@"opacity" from:0 to:255];

   // The last letter
   if(nextIndex == ([spriteArray count] - 1))
   {
      [nextSprite runAction:action1];
   }
   else // continue to the next letter
   {
      id callFunc = [CCCallFunc actionWithTarget:self selector:@selector(displayNextSprite:spriteArray nextIndex:nextIndex+1)];
      id sequence = [CCSequence actionOne:action1 two:callFunc];
      [nextSprite runAction:sequence];
   }
}