请问：
. {* ^: u) ~- A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？; C1 \* T4 g, t( x# W
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turtles-own [ energy ]
0 H- i3 L4 O0 o8 U. nto setup
& K- O: @ ^* \% xclear-all
# B, P2 i! I- Q( jset-default-shape turtles "square"
$ P" m$ a6 _- q1 ?3 G- ?& Ccrt nutrition
2 K- ~" P- k. C, [; hask turtles[8 D9 g/ B6 \3 W% B
set color white; B. k4 q8 p6 u
setxy random-pxcor random-pycor]
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Z8 {0 h$ d4 e4 v' G+ \# `: C$ ]! mask n-of microbes-initialization patches
- ^; F1 X" t1 M, z+ e0 Q [ set pcolor green]
, {$ |! `- \/ }& [% h7 k: } ask turtles [set energy 1]! c: \, n; w) R; o
end
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to go
/ ^8 Q6 j1 b& k3 N2 a% p ask turtles [set heading 90 * random 4 fd 1]: f) Q. X6 k5 J: ]8 z( t2 f
ask patches with [ any? turtles-here]* i6 M: F) }. q4 Y \1 Z8 k9 Y8 {3 j
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]; p; ^* i, i$ u, {
ask turtles [ if energy = 0 [die ]]
5 r8 m1 m" R. u0 ` end
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to tt
0 \7 J+ f9 @6 r( z5 Xask patches [set pcolor gray ]
5 f& S( @* H( l! ~. {- ]% n% N% Kask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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