Netlogo：如何使补丁找到最近的龟后，其先前的龟死亡

Question

我有一套条件时遇到一只龟会死。当一只乌龟死亡时，在同一个蜱中，我希望这些补丁找到他们最近的新乌龟。我写了下面的代码

to party-death 
    ask parties [ if (my-size = 0 and count parties > 2) 
[ die ask patches [set closest-party min-one-of parties [distance myself]] 
    ]] 

的问题是在哪个龟死亡，对他们来说，死乌龟是最接近的补丁不发现在同一个节拍下一个最近的龟蜱。

我还有一个子程序定义如下它抛出一个错误，因为最接近龟在agentset补丁之一是死：

to citizen-comparison 
let voter-patches patches with [votes-with-benefit != 0] 
let nonvoter-patches patches with [votes-with-benefit = 0] 
ask voter-patches [ set voter-peccentricity [eccentricity] of closest-party] 
ask nonvoter-patches [ set nonvoter-peccentricity [eccentricity] of closest-party] 

That party is dead. 
error while patch 0 32 running OF 
    called by procedure CITIZEN-COMPARISON 
    called by procedure ELECTION 
    called by procedure GO 
    called by Button 'Go once' 

如何避免这种错误的问补丁选择他们新的最接近的乌龟在他们的老最接近的乌龟死的同一个蜱中。

感谢任何帮助。谢谢

Answer 1

这项工作？我刚刚移动了括号，以便die完成，然后找到

to party-death 
    ask parties [ if (my-size = 0 and count parties > 2) [ die ] ] 
    ask patches [set closest-party min-one-of parties [distance myself]]