请问：
, R$ \5 h6 \" A7 T, I随机产生的turtle 已经在patch的坐标上上下左右一格格运动，当turtle碰到一个随即分布的patch以一定概率粘合,patch变色，其他turtle经过也还是以一定概率粘合的，粘合后turtle的能量就会转变到patch上，并且以一定速率消耗它，怎么编写这个过程？下面是我编写的，运行时就出错了。怎么改正呢？
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turtles-own [ energy ]4 t+ E) r J* D9 d) U
to setup- d. X. A$ m7 S( U! F5 U5 N! K$ ~
clear-all
4 Y4 C0 q4 E" d# ~2 s" Xset-default-shape turtles "square") K4 ? l H' m1 j3 ?6 q4 z4 D: D
crt nutrition, {5 v* w; e# q- Z# A3 e
ask turtles[
; k, ]! x7 j0 g3 q( Y' p set color white
6 W7 V u: g# \# l; r% v setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches0 f8 L- V$ p3 U& P9 ~
[ set pcolor green]( h. }& M# R+ @) @; Y- X8 U( o
ask turtles [set energy 1]
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4 V+ [5 _6 f0 ^9 Z- h# Pto go
& q: B$ O4 [9 i ask turtles [set heading 90 * random 4 fd 1]
; a. K. e; F( b1 J# |) \ ask patches with [ any? turtles-here] [; T2 M; l8 T
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
" O+ c+ S- |; {' n) \* I3 w ask turtles [ if energy = 0 [die ]]
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to tt
& y; n, I3 X& J! `* D& Z# p* [ask patches [set pcolor gray ]+ l/ T( K% i2 m) L
ask turtles [set energy energy - 1]9 n+ r- ]. x% Q. R
end
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发表于 2008-4-8 10:49:43
楼主
