如何计算两个面片之间的距离? [英] How can I compute the distance between two patches?

问题描述

我需要找到代理程序前面的补丁与某个补丁(目标)之间的最小距离，以便选择能够创建最佳(最短)路径的补丁.原始的距离仅需要一个参数，因此我不能按原样使用此功能.

I need to find the minimum distance between patches in front of my agent to a certain patch (goal), in order to select the patch that would create the most optimal (shortest) path. The primitive distance only requires one argument so I can't use it as is for this function.

推荐答案

> c0> 原语只需要一个参数，是的，但这是一个补丁或乌龟原语":必须在特定代理程序的上下文中通过询问"它与另一个代理程序的距离来运行它，因此您可以想想它作为另一个参数运行的上下文.

The distance primitive only requires one argument, yes, but it is a "patch or turtle primitive": it must be run in the context of a particular agent by "asking" it for its distance to another, so you can think of the context in which it run as another argument.

如果您想知道patch 0 0和patch 1 1之间的距离，可以写:

If you want to know the distance between patch 0 0 and patch 1 1, you can write:

ask patch 0 0 [ show distance patch 1 1 ]

或者可能更有用:

[ distance patch 1 1 ] of patch 0 0

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