请问：8 K& M0 T! ?. e: v+ p" j
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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turtles-own [ energy ]
* L/ {9 h+ D5 L7 ^' l, Hto setup
# c% k; g* W# F( Zclear-all. ] b. |2 G1 M Q2 p
set-default-shape turtles "square"+ g o/ I% e1 i6 f, p; G. Y
crt nutrition
* y Q8 z j5 {! P6 v- fask turtles[
' x/ T. ?: J9 s$ G3 r6 X7 M+ [6 z set color white5 L6 v) |( u8 \, Y- q; G7 a: `3 x
setxy random-pxcor random-pycor]' l. o/ s! v7 Y# y
2 d: u1 V$ a2 i" rask n-of microbes-initialization patches' \. v9 i0 `( j9 w% h
[ set pcolor green]
7 C+ @1 G6 n# a ask turtles [set energy 1]0 w6 a" u( W* E* e( n9 M6 h
end. S3 N, t/ ?" k V
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to go
. B$ K3 A* |! s, r) L# h8 B ask turtles [set heading 90 * random 4 fd 1]9 t5 H) N# \" x
ask patches with [ any? turtles-here]
; r" W# E8 q2 E1 T, D% q+ T; N& P( e [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
, ?: a! {- g: `& P ask turtles [ if energy = 0 [die ]]- e8 f0 ?) }/ L* h+ M$ P9 A
end
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to tt( n1 J( B; Z, Y0 `* ]( d
ask patches [set pcolor gray ]9 Y0 P2 g+ q ~6 q1 p# i. M6 @
ask turtles [set energy energy - 1]" ~ o' A; }( ~0 F2 e! {
end
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发表于 2008-4-8 10:49:43
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