请问：, T7 q7 K) R& |2 L% r6 T3 @
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% A; k/ I$ |: n }1 _$ }turtles-own [ energy ]
# m( c, z9 @) V/ \( yto setup
, u2 D# Q! a( l/ Dclear-all0 J0 L& n& s' S6 m9 Y+ i3 `; I
set-default-shape turtles "square"
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ask turtles[" C/ e* Y7 X- m5 U- t
set color white
7 B: ~3 W3 s, ?# f9 h setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches$ Z0 k$ `" B5 t2 X& T- h1 N
[ set pcolor green]* m; U+ i/ a. H5 n
ask turtles [set energy 1], H, m: T8 U; _. R8 h7 m1 b' b" m
end
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to go/ o1 n: |) [, e
ask turtles [set heading 90 * random 4 fd 1]
& M1 ` U3 F. k) j: a& E) g ask patches with [ any? turtles-here]
+ X3 s8 c$ A0 e, _8 K [ if pcolor = green and random 100 < chance-of-congregating [tt ]]' U8 N& M% {4 S4 E4 j7 b: {
ask turtles [ if energy = 0 [die ]]
& L) ]' S- ?# q6 }" z8 Q end
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to tt8 U# A8 \4 a8 m) a1 O* y( N/ S
ask patches [set pcolor gray ]" A" n7 {. g7 w- ?( @+ ^0 W
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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