Question

我是Cocos2d的初学者，我想在离开屏幕5秒延迟时显示硬币精灵。所以这就是我在主游戏层中写的连续添加7个硬币的内容：

- (void)coinSidewaysRowOne { 
        if (coinSide1 == FALSE)
        {
            coinSide1 = TRUE;
            NSLog(@"coinSide1 = TRUE");
            int originalX = 500;
            for(int i = 0; i < 8; i++)
            {
                CCSprite *coinHorizontal = [CCSprite spriteWithFile:@"bubble.png"];
                coinHorizontal.position = ccp(originalX, 150);
                originalX += 20;

                [self addChild:coinHorizontal];
                [coinArray addObject:coinHorizontal];
            }
        }
    }

然后，在我的updateRunning方法中，我添加了这个，所以当硬币在屏幕外产生时，它们向左移动并消失：

for (CCSprite *coin in coinArray)
    {
        // apply background scroll speed
        float backgroundScrollSpeedX = [[GameMechanics sharedGameMechanics] backGroundScrollSpeedX];
        float xSpeed = 1.09 * backgroundScrollSpeedX;

        // move the coin until it leaves the left edge of the screen
        if (coin.position.x > (coin.contentSize.width * (-1)))
        {
            coin.position = ccp(coin.position.x - (xSpeed*delta), coin.position.y);
        }
        **// This is where I am trying to make the CCSprite coin reappear** 
        else
        {
            [self performSelector:@selector(showSpriteAgain:) withObject:coin afterDelay:5.0f];
        }
    }

然后我添加了这个方法：

-(void) showSpriteAgain:(CCSprite *)coin{
    CGSize screenSize = [[CCDirector sharedDirector] winSize];
    coin.position = ccp(coin.position.x-screenSize.width,coin.position.y);
}

但是5秒后硬币仍然不会再出现。难道我做错了什么？感谢。

Answer 1

showSpriteAgain函数的更改：

-(void) showSpriteAgain:(CCSprite *)coin{
    CGSize screenSize = [[CCDirector sharedDirector] winSize];
    coin.position = ccp(coin.position.x + screenSize.width,coin.position.y);
}

我做了什么，是从右向左移动所以我们必须将它放回到右边，所以我们必须添加screennSize.width，

延迟5秒后重复CCSprites

1 个答案: