请问：% A8 U( P5 V I5 e' H- r
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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7 c9 c7 Z5 S: s- E; h5 Zturtles-own [ energy ]5 V E. r' \7 q: X, C/ C
to setup
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set-default-shape turtles "square"
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ask turtles[
3 Z, u; K) l. ?+ C1 r8 ^0 {) y set color white1 @: w& z7 _3 T0 L! `0 J3 @& e
setxy random-pxcor random-pycor]
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8 N: J" {. K# z a {ask n-of microbes-initialization patches" P$ a; R, o3 n, B! j
[ set pcolor green]
2 C9 y, E% |3 Y ask turtles [set energy 1]2 X: i& s, S1 G) ~0 I
end
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; k8 [5 B7 _$ N0 X6 U# D9 \- Oto go
. q& Y( z3 E( Q% S8 ], \) h/ m ask turtles [set heading 90 * random 4 fd 1]
+ K/ n/ y5 U) W$ ]% X( e; M0 x7 X ask patches with [ any? turtles-here]) ^$ @0 [6 ^2 b( J! P
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]/ ?( _! p7 }9 q' @3 L) V
ask turtles [ if energy = 0 [die ]]& ]5 D6 [2 P" R: d6 [! m; y
end
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ask patches [set pcolor gray ]
; Z$ m' A7 ~( Fask turtles [set energy energy - 1]
. X' u7 A, q* @- Aend
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发表于 2008-4-8 10:49:43
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