ios - 有没有一种简单的方法可以从图像中绘制 SKnodes 障碍物的坐标？

Question

我正在创建一个游戏，我需要根据级别(背景图像)在(SKNodes)中绘制一些障碍。假设我有一棵树，我想在它周围绘制边框，如下图所示:

我需要坐标来创建一个 physicsBody。

有什么简单的方法吗？ (也许是软件？)

我需要为不同的设备调整相同的坐标，因此我认为手动操作太复杂了。

有什么想法吗？

谢谢!

Answer 1

有一个 SKPhysicsBody 类方法可以提供帮助:

+ bodyWithTexture:size:

来自描述:

Use this method when your sprite has a shape that you want replicated in its physics body. The texture is scaled to the new size and then analyzed. A new physics body is created that includes all of the texels in the texture that have a nonzero alpha value. The shape of this body attempts to strike a good balance between performance and accuracy. For example, fine details may be ignored if keeping them would cause a significant performance penalty.