请问：
& ~- g+ i" e7 E3 N, x! h) t" j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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$ G) l( k" f. Q% K8 `0 M2 Iturtles-own [ energy ]
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clear-all
K" \" ^* ?6 G1 C+ Kset-default-shape turtles "square"- G) ?" y! I& \ `$ a8 F, F' d
crt nutrition V" y& d( T I% W; Q2 p
ask turtles[
6 P2 ~) T; `+ Z! T set color white
% H4 b+ `: k; f6 n setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches3 `0 p6 P& h0 [0 O, ?
[ set pcolor green]
2 T+ D. T( I; A/ a, i. J ask turtles [set energy 1]
. e1 h8 B ?4 o% F3 Aend
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7 v0 P x& V6 t0 b, M& jto go( M0 u1 q x2 z* x4 O
ask turtles [set heading 90 * random 4 fd 1]6 ]" q! v5 ]( X" n
ask patches with [ any? turtles-here]
7 |0 K8 l. W6 k. P6 p. g [ if pcolor = green and random 100 < chance-of-congregating [tt ]]$ |% s* R3 e ~% i, q. V
ask turtles [ if energy = 0 [die ]]
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to tt
/ L7 `# h5 {- q' g8 `# _7 Lask patches [set pcolor gray ]( Y! H2 `; N6 ^! \7 _0 F# V3 t2 y
ask turtles [set energy energy - 1]
% p% ] S% Q3 L7 u5 A/ Send" P* O! q: V8 I# e" a
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发表于 2008-4-8 10:49:43
楼主
