简体繁体 English

在游戏运行时从现有的精灵表创建精灵表？

[英]Creating a sprite sheet from existing sprite sheets while game is running?

原文 2012-10-03 08:12:20 3 1 c#/ xna/ sprite

I've been making a 2D game with XNA that will have several unique enemies. 我一直在用XNA制作2D游戏，它将有几个独特的敌人。 I have no trouble drawing separate sprites to the screen, one over the other to make no two enemies alike, but I think it might be more efficient if instead of drawing a dozen sprites per enemy, I somehow merged those sprites into one sprite sheet. 我可以毫不费力地在屏幕上绘制单独的精灵，一个又一个，不让两个敌人成为同一敌人，但是我认为，如果不是将每个精灵合成十几个精灵，而是以某种方式将这些精灵合并到一个精灵表中，那可能会更有效率。

If I have lots and lots of these enemies on the screen, will I improve performance by a worthy amount if I do merge? 如果我在屏幕上有很多这样的敌人，如果合并的话，是否可以将性能提高很多？ And is there a simple way for me to create new sprite sheets in this way, or is the answer quite fiddly? 有没有一种简单的方法可以让我以这种方式创建新的Sprite工作表，或者答案很巧妙？

1 个解决方案

It can be faster to draw one sprite instead of several. 绘制一个精灵而不是多个精灵会更快。 However, I would only recommend this, if you have performance problems. 但是，如果您有性能问题，我只会建议您这样做。 Drawing sprites is quite fast with the SpriteBatch . 使用SpriteBatch快速绘制精灵。 It has the nice feature to group draw calls of the same texture, which makes it pretty fast. 它具有很好的功能，可以对相同纹理的绘图调用进行分组，因此速度非常快。 If you create a separate texture for each enemy, you can loose this feature, which could result in a performance loss. 如果为每个敌人创建一个单独的纹理，则可以放松此功能，这可能会导致性能下降。 Creating one large sprite sheet can be better, if the sheet does not get too large. 如果工作表不会变得太大，则创建一个较大的Sprite工作表可能会更好。

To create such a sheet, you have to create a texture / render target and render to it. 要创建这样的图纸，您必须创建一个纹理/渲染目标并将其渲染。 Here is how to do it with XNA. 这是使用XNA的方法。