请问：9 C# L9 \0 L0 D% M! L
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 _9 o) N& w' _5 A2 H6 m/ d
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turtles-own [ energy ]
9 h# }4 w% p/ |2 |. G( cto setup& }: s3 |7 s3 j* r
clear-all
1 b" [$ g5 j/ a8 A6 d* u7 Jset-default-shape turtles "square"; G, S. u( v5 ~4 c5 y' f
crt nutrition; {$ M/ B: m# V7 F# v
ask turtles[/ ~1 Y0 m. M0 H/ C0 `
set color white! R$ B+ A; V F* y( M6 R
setxy random-pxcor random-pycor]% q7 n% b& p: v2 e& O+ e9 }. X, s
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ask n-of microbes-initialization patches4 Y' o0 }0 ^ f7 D" B
[ set pcolor green]
- ]( N/ D0 O. z% d) B v s. I1 q ask turtles [set energy 1]
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R3 ~1 q% z# A, R5 |to go
; H8 v# V" Q: S- N ask turtles [set heading 90 * random 4 fd 1]
% {2 P% j$ o P+ T6 O- Q ask patches with [ any? turtles-here]7 E! ~6 d$ H: o" M2 |0 Z
[ if pcolor = green and random 100 < chance-of-congregating [tt ]], @* C/ D0 p( X% E3 h3 a$ \
ask turtles [ if energy = 0 [die ]]
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ask patches [set pcolor gray ]; H7 }# L3 A [; E7 |+ n
ask turtles [set energy energy - 1]9 D+ S9 k/ A/ V
end
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发表于 2008-4-8 10:49:43
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