请问：5 L4 J! Z8 E' K9 o4 L& q
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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8 ^* b( l% w, w. ?- {turtles-own [ energy ]2 K5 b, A8 b4 U9 C/ B4 }* A
to setup _ x' f: D/ o
clear-all
T" S+ T' s3 C% [! g9 j# Y+ x/ ]6 zset-default-shape turtles "square"
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ask turtles[) C1 p& L3 D: V4 N+ _
set color white! t) g+ V$ U: h5 q# b# N8 @
setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches
$ E4 ~8 E, B- V0 \( L [ set pcolor green]
9 Q* v! R) D1 H0 B& y" B( U ask turtles [set energy 1]
& U8 G& ?3 T0 X5 [end
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6 \. L$ `. |: ~to go; G- I% K8 S& P# P
ask turtles [set heading 90 * random 4 fd 1]" l0 T% ~% S0 J+ [& h2 ^ [0 r
ask patches with [ any? turtles-here]' R1 b8 n$ F7 L' L% r* V9 R0 A
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
# s O) [- ]& U& N6 H) J& p; G ask turtles [ if energy = 0 [die ]]
$ h4 M3 P( A) d' W end
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to tt. { Y) ?" E8 w: T% y
ask patches [set pcolor gray ]1 Q; X, b& n7 j4 J
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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