请问：# v$ p* {8 g2 y$ `$ u
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 ]
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clear-all7 \& E. A+ F9 q( n; f0 i, q6 c
set-default-shape turtles "square"' o3 Y% ^* l9 ~6 H
crt nutrition
) x. O9 e, c! a/ V7 Lask turtles[
6 O* J, R& T) Z/ d( l. [$ P/ R9 s set color white8 K+ t$ f, s: s; z
setxy random-pxcor random-pycor]
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3 l, U. F1 q/ y, fask n-of microbes-initialization patches
( |" z( C$ }9 K0 H7 D [ set pcolor green]
( ?: `2 H O3 X) b ask turtles [set energy 1]
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to go
4 Q7 |3 V' Z. L5 U' K ask turtles [set heading 90 * random 4 fd 1], Z. v0 Z) M" v# ^' K5 f" d
ask patches with [ any? turtles-here]
8 P6 S% }2 U2 q0 t [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
4 N7 C1 k8 T& F. J* j B. b" c( k ask turtles [ if energy = 0 [die ]]" I k! R: `. |0 Y! w2 y* D6 Z2 n
end5 l, k" u$ \, t( Q. Q4 A) O0 ?4 b
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$ @5 O. @6 X# B- L) |- M; S7 yask patches [set pcolor gray ]
) U3 e. t5 A' w% Lask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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