Cocos2D无限背景图片 [英] Cocos2D Infinite Background Picture

问题描述

我很好奇如何在 cocos2d 中创建无限背景.例如，假设我正在构建一个应用程序，其中一个人从左到右运行，我希望他无限运行.那么在那种情况下，我必须有一个无尽的背景，这样这个人才能继续奔跑.我一直在搜索这件事，但没有发现任何真正有效的东西.

I'm curious as to how to create an infinite background in cocos2d. For example lets say I was building an app with a man running from left to right, and I want him to run infinitely. Well in that case I would have to have an endless background so the man could keep running. I've continuously searched on this matter and have found nothing that actually works.

非常感谢任何类型的建议、答案和提示.

Any types of suggestions, answers, and tips are much appreciated.

谢谢

推荐答案

试试这个:

 #define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
 #define MM_BG_SPEED_DUR       ( IS_IPAD ? (6.0f) : (2.0f) )



-(void)onEnter
{
    [super onEnter];
    [self initBackground];

    [self schedule: @selector(tick:)];
}


-(void)initBackground
{
   NSString *tex = @"BG/Background.png";//[self getThemeBG];

    mBG1 = [CCSprite spriteWithFile:tex];
    mBG1.position = ccp(s.width*0.5f,s.height*0.5f);
    [self addChild:mBG1 z:LAYER_BACKGROUND];

    mBG2 = [CCSprite spriteWithFile:tex];
    mBG2.position = ccp(s.width+s.width*0.5f,s.height*0.5f);

    mBG2.flipX = true;
    [self addChild:mBG2 z:LAYER_BACKGROUND];

}


-(void)scrollBackground:(ccTime)dt
{
    CGSize s = [[CCDirector sharedDirector] winSize];

    CGPoint pos1 = mBG1.position;
    CGPoint pos2 = mBG2.position;

    pos1.x -= MM_BG_SPEED_DUR;
    pos2.x -= MM_BG_SPEED_DUR;


    if(pos1.x <=-(s.width*0.5f) )
    {
        pos1.x = pos2.x + s.width;
    }

    if(pos2.x <=-(s.width*0.5f) )
    {
        pos2.x = pos1.x + s.width;
    }

    mBG1.position = pos1;
    mBG2.position = pos2;

}

-(void)tick:(ccTime)dt
{
    [self scrollBackground:dt];
}

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