Question

我有一个奇怪的Cocos2d动画问题。

在初始化时，如果我的createAndRunAnimationonSprite方法被调用完美。

但是，如果我等待并将其分配给一个带有方法showSprite的按钮，则精灵永远不会出现。我不知道为什么会发生这种情况。我没有其他方法或类。

HelloWorldLayer.h

@interface AnimationViewerLayer : CCLayer
{
    CCSprite *sprite;

}

HelloWorldLayer.m

-(id) init
{
    // always call "super" init
    // Apple recommends to re-assign "self" with the "super" return value
    if( (self=[super init])) {

        CGSize winSize = [[CCDirector sharedDirector] winSize];
        // initialize the sprite
        sprite = [CCSprite node];
        sprite.position =  ccp( winSize.width/2 , winSize.height/2 );
        [self addChild: sprite];

        // If this is uncommented the sprite will show up. 
        // [self createAndRunAnimationOnSprite];

    }
    return self;
}


-   (void) showSprite { 
       [self createAndRunAnimationOnSprite];
}

-(void) createAndRunAnimationOnSprite {
    // stop all previous ones
    [sprite stopAllActions];
    NSLog(@"Create and Run Animation");
    CGSize winSize = [CCDirector sharedDirector].winSize;

    [[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"ThisSprite.plist"];
    CCSpriteBatchNode *spriteSheet = [CCSpriteBatchNode  batchNodeWithFile:@"ThisSprite.png"];
    [self addChild:spriteSheet];

    NSMutableArray *aniFrames = [NSMutableArray array];
    for(int i = 1; i <= 3; ++i) {
        [aniFrames addObject: [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName: [NSString stringWithFormat:@"ThisSprite_walking_%d.png", i]]];
    }

    CCAnimation *walkAnim = [CCAnimation animationWithFrames:aniFrames delay:0.1f];


    sprite = [CCSprite spriteWithSpriteFrameName:@"ThisSprite_walking_1.png"];
    sprite.position = ccp(winSize.width/2, winSize.height/2);
    id walkAction = [CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:walkAnim restoreOriginalFrame:NO]];
    [sprite runAction:walkAction];
    [spriteSheet addChild:sprite];


}

Answer 1

你要加两次精灵。在init中，将其添加到self，在createAndRunAnimation中将其添加到spriteSheet。这通常应该导致应用程序的断言和中止执行（例外）。

Answer 2

您的图片可能存在问题，可能是图片名称不准确或图片损坏。

使用其他虚拟图像来运行动画，并尝试使用任何动画帧制作精灵，即“ThisSprite_walking_1.png”，然后查看它是否有效

Answer 3

用这个替换你的代码我希望这会起作用

- （id）init {

    //always call "super" init
    // Apple recommends to re-assign "self" with the "super" return value
    if( (self=[super init])) {

        CGSize winSize = [[CCDirector sharedDirector] winSize];
        // initialize the sprite

        [[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"ThisSprite.plist"];
        CCSpriteBatchNode *spriteSheet = [CCSpriteBatchNode batchNodeWithFile:@"ThisSprite.png"];
        [self addChild:spriteSheet];
        sprite = [CCSprite spriteWithSpriteFrameName:@"ThisSprite_walking_1.png"];
        sprite.position = ccp(winSize.width/2, winSize.height/2);
        [spriteSheet addChild: sprite];

        // If this is uncommented the sprite will show up. 
         //[self createAndRunAnimationOnSprite];

    }
    return self;

}

- （void）createAndRunAnimationOnSprite {

    // stop all previous ones
    [sprite stopAllActions];
    NSLog(@"Create and Run Animation");
    CGSize winSize = [CCDirector sharedDirector].winSize;

    NSMutableArray *aniFrames = [NSMutableArray array];
    for(int i = 1; i <= 3; ++i) 
    {
        [aniFrames addObject: [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName: [NSString stringWithFormat:@"ThisSprite_walking_%d.png", i]]];
    }

    CCAnimation *walkAnim = [CCAnimation animationWithFrames:aniFrames delay:0.1f];


    id walkAction = [CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:walkAnim restoreOriginalFrame:NO]];
    [sprite runAction:walkAction];


}

Cocos2d CCSprite动画无法加载

3 个答案: