问题描述

创建多个相同的CCSprites

有么有方法能快速的创建任意数量的相同CCSprites？

就为了后来删除，然后只需要一个标签引用他们

i.e.在游戏里面:

- (void)displayOneLife
{
    CGPoint positionOne = ccp(90, 450);

    CCSprite *life1 = [CCSprite spriteWithFile:@"life.png"];
    [life1 setPosition:positionOne];
    [life1 setScale:0.5f];
    [self addChild:life1 z:5 tag:1];
}

- (void)displayTwoLives
{
    CGPoint positionOne = ccp(90, 450);
    CGPoint positionTwo = ccp(105, 450);

    CCSprite *life1 = [CCSprite spriteWithFile:@"life.png"];
    CCSprite *life2 = [CCSprite spriteWithFile:@"life.png"];

    [life1 setScale:0.5f];
    [life2 setScale:0.5f];

    [life1 setPosition:positionOne];
    [life2 setPosition:positionTwo];

    [self addChild:life1 z:5 tag:1];
    [self addChild:life2 z:5 tag:2];
}

- (void)displayThreeLives
{
    CGPoint positionOne = ccp(90, 450);
    CGPoint positionTwo = ccp(105, 450);
    CGPoint positionThree = ccp(120, 450);

    CCSprite *life1 = [CCSprite spriteWithFile:@"life.png"];
    CCSprite *life2 = [CCSprite spriteWithFile:@"life.png"];
    CCSprite *life3 = [CCSprite spriteWithFile:@"life.png"];

    [life1 setPosition:positionOne];
    [life2 setPosition:positionTwo];
    [life3 setPosition:positionThree];

    [life1 setScale:0.5f];
    [life2 setScale:0.5f];
    [life3 setScale:0.5f];

    [self addChild:life1 z:5 tag:1];
    [self addChild:life2 z:5 tag:2];
    [self addChild:life3 z:5 tag:3];
}

解决方案

创建CCTexture2D,然后初始化全部sprite。
通过编程实现：

- (void)displayLifes:(int) nrOfLifes
{
    CGPoint position = ccp(90, 450);
    CCTexture2D *texture = [[[CCTexture2D alloc] initWithImage:[UIImage imageNamed:@"life.png"]]autorelease];

    for(int i = 1 ; i <= nrOfLifes ; i++)
    {
         CCSprite *life = [CCSprite spriteWithTexture:texture];
         [life setPosition:position];
         [life setScale:0.5f];
         [self addChild:life z:5 tag:i];

         position.x += 15;
    }
}