在cocos2d中连续滚动背景 [英] Continuous Scrolling of background in cocos2d

问题描述

我的代码连续滚动......

  NSArray * spaceDusts = [NSArray arrayWithObjects：_spacedust1，_spacedust2，零]; 
 for（CCSprite * spaceDusts）{
 if（[_backgroundNode convertToWorldSpace：spaceDust.position] .x < -  spaceDust.contentSize.width）{
 [_backgroundNode incrementOffset：ccp * spaceDust.contentSize.width，0）forChild：spaceDust]; 
} 
} 
  

背景图片大小为1024 * 384

当模拟器运行正常，但当我在设备（iphone）中使用

它设置背景为中心，并采取一些加载图像

感谢提前.....

解决方案

scroll in cocos2d game：

  #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。宽度; 
} 
 
 mBG1.position = pos1; 
 mBG2.position = pos2; 
 
} 
 
  - （void）tick：（ccTime）dt 
 {
 [self scrollBackground：dt]; 
} 
  

My Code For Continuous Scrolling ......

NSArray *spaceDusts = [NSArray arrayWithObjects:_spacedust1, _spacedust2, nil];
for (CCSprite *spaceDust in spaceDusts) {
if ([_backgroundNode convertToWorldSpace:spaceDust.position].x < -   spaceDust.contentSize.width) {
    [_backgroundNode incrementOffset:ccp(2*spaceDust.contentSize.width,0)   forChild:spaceDust];
}
}

Background image size is 1024*384

when rune this into simulator its work properly but when i use in device(iphone)
its set the background into center and take some to load the image

thanks in advance.....

解决方案

My code for background scroll in cocos2d game:

#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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