NetLogo:选择一个具有某些特性的邻居的补丁？

Question

我想让我的海龟移动到特定的补丁，并做一个“斑点”。中央补丁=我的海龟位置，可以随机选择，但满足两个条件：

• 必须与海龟的实际位置有一定距离
• 以具有特定质量的斑块包围(一定半径内的邻居)

原因是为了在我海龟的位置周围创造一种“缓冲器”，目的是阻止我的集群的接近。

请问，我怎样才能满足这两个条件？

就目前而言，我有：

to go
 ask turtles [                 
   ; select one of patches in specific distance, and 
   ; surrounded by patches with no magenta color
   let aaa one-of patches with [distance myself > 3 and   
       all? neighbors with [pcolor != magenta]] 
                      ; how to write this condition above ?? 
                      ; and how replace "neighbors" by "in-radius"??
   move-to aaa
   ask neighbors [           ; create clump of magenta patches
     set pcolor magenta ]
   ask patch-here [          ; set central patch to magenta
     set pcolor magenta ]
 ]

​

​

Answer 1

您就快到了；您只需要重新阅读all?和any?的文档。

let _candidates patches with [distance myself > 3]
set _candidates _candidates with [
  not any? (patches in-radius 3 with [pcolor = magenta])
]
let aaa one-of _candidates

如果可能没有候选人，你应该警惕这一点。