pygame:使用 sprite.RenderPlain 绘制精灵组的顺序 [英] pygame: drawing order for sprite group with sprite.RenderPlain

问题描述

我有一个需要按特定顺序绘制的精灵组，这样它的精灵就应该重叠.

I've got a sprite group which needs to be drawn in a certain order so its sprites overlap as they should.

但是，即使使用运算符模块函数 (sorted(self.sprites, key=attrgetter('y','x')) 对组进行排序时，顺序也是错误的.

However even when sorting the group using operator module function (sorted(self.sprites, key=attrgetter('y','x')) the order is wrong.

我该如何解决这种行为?

How can I fix this behaviour?

推荐答案

直截了当，你可以't:

Group 不以任何顺序保存精灵，所以绘制顺序是随意.

The Group does not keep sprites in any order, so the draw order is arbitrary.

改用 OrderedUpdates 组:

这个类派生自 pygame.sprite.RenderUpdates - Group 类跟踪脏更新.它保持精灵的顺序添加到组进行渲染.这使得添加和删除来自 Group 的 Sprite 比普通 Groups 慢一点.

This class derives from pygame.sprite.RenderUpdates - Group class that tracks dirty updates. It maintains the order in which the Sprites were added to the Group for rendering. This makes adding and removing Sprites from the Group a little slower than regular Groups.

或者，您可以在不同的组中保留不同层"的精灵，保持组的正确顺序.

Alternatively, you can keep different 'layers' of sprites in different groups, keeping the order of groups correct.

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