请问：
2 H. [$ h% D7 G& L0 q" h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？9 ]& f% W# h8 u! S; J; @# O6 R* {
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8 m, G- U1 j3 ~+ zturtles-own [ energy ]5 f' }( _+ V+ }( _& H
to setup, _: H% E# Q" }$ |' d$ j; J
clear-all
$ S' {$ b; U, q/ M: Lset-default-shape turtles "square" u( H: E- z- `+ i6 P
crt nutrition
1 v7 _2 P ]. V# C" bask turtles[
# B" Z' {7 S1 a" u6 N6 X$ o7 Z set color white
" }# z0 K% m/ K# j9 } B; J4 z setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches
" v v5 [" U. X) z1 I N [ set pcolor green]8 s, f: C0 y8 }$ K( \: ]% q' ?
ask turtles [set energy 1]
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to go
9 b& y; t# J1 C2 r- b) N- l' F/ c ask turtles [set heading 90 * random 4 fd 1]1 V) G$ p6 u) m; m8 M: ]
ask patches with [ any? turtles-here] i3 G/ z! ^2 Y8 `
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]! H q9 e" ^1 y0 L
ask turtles [ if energy = 0 [die ]]
% t6 e! m3 }/ p% Q end
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5 O% q0 g W8 V5 Z3 rto tt
; N3 U8 W1 f0 N$ r) sask patches [set pcolor gray ]7 N( Z! K) g7 V" f# L0 B5 }" @: g
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
楼主
