如何切换 CCSprite 的图像 [英] How to switch the image of a CCSprite

问题描述

我有一个使用 [CCSprite spriteWithSpriteFrameName:@"plist_file_key_here.png"] 初始化的 CCSprite.我已经将 plist 文件中的所有精灵添加到 CCSpriteFrameCache.我试过这样设置纹理:

I have a CCSprite that is initialized using [CCSprite spriteWithSpriteFrameName:@"plist_file_key_here.png"]. I have already added all the sprites from my plist file to CCSpriteFrameCache. I have tried setting the texture like this:

CCSpriteFrame * frame = [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:name];
NSAssert(frame.texture!=nil, @"frame.texture can't equal nil"); //this works fine
[sprite setTexture:frame.texture]; //doesn't cause a white square to appear, just doesn't switch the image.

正如我在评论中所说，这不起作用.我认为这与使用 [CCSprite spriteWithFile:] 和 [CCSprite spriteWithSpriteFrameName:] 之间的区别有关，后者依赖于从纹理加载到 CCSpriteFrameCache 的精灵帧阿特拉斯.当使用从纹理图集加载的精灵时，每个精灵的纹理等于精灵表的纹理.有什么办法可以解决这个问题，还是我必须删除并重新创建精灵?如果这是我唯一的选择，有没有办法从其父节点中删除 ccnode 但保留其子节点?

As I said in my comments, this doesn't work. I think it has something to do with the difference between using [CCSprite spriteWithFile:] and [CCSprite spriteWithSpriteFrameName:], which relies on sprite frames loaded into the CCSpriteFrameCache from a texture atlas. When using sprites loaded from a texture atlas, the texture of each sprite is equal to the texture of the sprite sheet. Is there any way around this or do I have to remove and recreate the sprite? If that is my only option, is there a way of removing a ccnode from its parent but preserving its children?

推荐答案

API参考救援！

当你有一个带有精灵框架的纹理时，你不想改变纹理而是精灵使用的精灵框架.你可以这样做:

When you have a texture with sprite frame, you don't want to change the texture but the sprite frame the sprite uses. That you can do as follows:

CCSpriteFrameCache* cache = [CCSpriteFrameCache sharedSpriteFrameCache];
CCSpriteFrame* frame = [cache spriteFrameByName:name];
sprite.displayFrame = frame;

在 cocos2d v3 中它需要是:

in cocos2d v3 it would need to be:

sprite.spriteFrame = frame;

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