XNA：将Content.Load与Texture2D的子类一起使用
所以我有一个名为ScrollingBackgroundTexture 的Texture2D 子类。我想用它来加载带有 Content.Load<> 的纹理，但我似乎无法让它工作。
这是我的子类中的代码（到目前为止，它只是一个构造函数）：
class ScrollingBackgroundTexture : Texture2D {
public ScrollingBackgroundTexture(GraphicsDevice graphicsDevice, int width, int height) : base(graphicsDevice, width, height) { }
}
这是我的主类中给我带来麻烦的代码：
test = Content.Load<ScrollingBackgroundTexture>("near stars");
错误告诉我该文件包含 Texture2D，但我我正在尝试将其加载为 ScrollingBackgroundTexture。
我也尝试过
test = (ScrollingBackgroundTexture)Content.Load<Texture2D>("near stars");
但这只会给我另一个错误。
So I have a subclass of Texture2D called ScrollingBackgroundTexture. I'd like to use it to load a texture with Content.Load<>, but I can't seem to get it to work.
Here's the code in my subclass (as of now, it's just a constructor):
class ScrollingBackgroundTexture : Texture2D {
public ScrollingBackgroundTexture(GraphicsDevice graphicsDevice, int width, int height) : base(graphicsDevice, width, height) { }
}
And here's the code from my main class that's giving me trouble:
test = Content.Load<ScrollingBackgroundTexture>("near stars");
The error tells me that the file contains a Texture2D, but I'm trying to load it as a ScrollingBackgroundTexture.
I've also tried
test = (ScrollingBackgroundTexture)Content.Load<Texture2D>("near stars");
But that just gives me another error.
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评论（1）
我认为你做不到。原因如下。 Texture2D 的大小为 X 字节大。 ScrollingBackgroundTexture 的大小为 X + Y 大。 ScrollingBackgroundTexture 不知道如何加载 X 大的内容，因为它是 X + Y 大。
您需要做的是为 ScrollingBackgroundTexture 创建您自己的自定义内容类型。您可以在 MSDN 中找到有关如何执行此操作的信息。
如果我是你，我会改用设计更好的东西，有利于组合而不是继承 ！这还有一个额外的好处，那就是不强迫你搞乱内容管道。
I don't think you can do that. Here's why. The size of a Texture2D is X bytes big. The size of a ScrollingBackgroundTexture is X + Y big. The ScrollingBackgroundTexture doesn't know how to load content that is X big becasue it is X + Y big.
What you'll need to do is create your own custom content type for ScrollingBackgroundTexture. You can find information on how to do that at MSDN.
If I were you though, I would switch to something with a bit better design that favors composition over inheritance! This will have the added bonus of not forcing you to mess around with the content pipeline.