無限滾動更多背景

Question

在我的遊戲中，我使用無限滾動背景。 這是我的代碼：

- (void)setupBackground { 

    CGSize winSize = [CCDirector sharedDirector].winSize; 

    // 1) Create the CCParallaxNode 
    _backgroundNode = [CCParallaxNode node]; 
    [self addChild:_backgroundNode z:-2]; 

    // 2) Create the sprites you’ll add to the 
    // CCParallaxNode 
    _spacedust1 = [CCSprite spriteWithFile:@"bg_front_spacedust.png"]; 
    _spacedust2 = [CCSprite spriteWithFile:@"bg_front_spacedust.png"]; 
    _planetsunrise = [CCSprite spriteWithFile:@"bg_planetsunrise.png"]; 
    _galaxy = [CCSprite spriteWithFile:@"bg_galaxy.png"]; 
    _spacialanomaly = [CCSprite spriteWithFile:@"bg_spacialanomaly.png"]; 
    _spacialanomaly2 = [CCSprite spriteWithFile:@"bg_spacialanomaly2.png"]; 

    // 3) Determine relative movement speeds for space dust 
    // and background 
    CGPoint dustSpeed = ccp(0.1, 0.1); 
    CGPoint bgSpeed = ccp(0.05, 0.05); 

    // 4) Add children to CCParallaxNode 
    [_backgroundNode addChild:_spacedust1 z:0 
       parallaxRatio:dustSpeed 
       positionOffset:ccp(0,winSize.height/2)]; 
    [_backgroundNode addChild:_spacedust2 z:0 
       parallaxRatio:dustSpeed 
       positionOffset:ccp(_spacedust1.contentSize.width* 
            _spacedust1.scale, winSize.height/2)]; 
    [_backgroundNode addChild:_galaxy z:-1 
       parallaxRatio:bgSpeed 
       positionOffset:ccp(0,winSize.height * 0.7)]; 
    [_backgroundNode addChild:_planetsunrise z:-1 
       parallaxRatio:bgSpeed 
       positionOffset:ccp(600,winSize.height * 0)]; 
    [_backgroundNode addChild:_spacialanomaly z:-1 
       parallaxRatio:bgSpeed 
       positionOffset:ccp(900,winSize.height * 0.3)]; 
    [_backgroundNode addChild:_spacialanomaly2 z:-1 
       parallaxRatio:bgSpeed 
       positionOffset:ccp(1500,winSize.height * 0.9)]; 
} 

它工作得很好。 但是我想在遊戲中使用另一個背景圖像進行更改，例如LV 2。 我該怎麼做？我試圖用另一個圖像創建另一個函數setupBackground2，但它不起作用。

Answer 1

使用setTexture更改現有精靈的紋理：從CCTextureCache addImage：方法加載/獲取紋理之後。