请问：: R. \2 Z# _6 g; [ z( ^
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？ K* t ?% e9 J2 v: \# J9 Y
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7 e% K8 \! }; ]# O. U: q! Q9 M7 k) Bturtles-own [ energy ] I5 o' Y" x2 ?- p% q! @
to setup
$ _ l; c! f( i; Jclear-all F% X, [$ f5 m* h/ a& d6 C
set-default-shape turtles "square"; u Y5 @2 X( D, E n
crt nutrition# p& t3 o7 T5 v
ask turtles[
p1 Y. W" k2 i( W# R3 C set color white: n0 W; z$ ^3 K& b# W& X
setxy random-pxcor random-pycor]& ^ M; P7 c+ |' I; V
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ask n-of microbes-initialization patches
) F1 n' t5 Y% Z: {0 a [ set pcolor green]
2 Q; D5 O- q8 E4 e- F# y2 u ask turtles [set energy 1]
# A" f0 V2 F" Aend
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to go$ y6 ^3 M! H; _6 p- D2 a! B
ask turtles [set heading 90 * random 4 fd 1]
# T; {% q. O$ s4 ]" f8 u- n ask patches with [ any? turtles-here]7 `$ q" x( h( Z- t# m
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]0 W; u, l& ?% y4 {7 Z
ask turtles [ if energy = 0 [die ]]
% m8 e' R5 |. Y# D+ t end
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to tt0 T% ?; P& J: t* r1 Z! f
ask patches [set pcolor gray ]0 c) M7 |. B/ \8 O9 W/ O- `: a
ask turtles [set energy energy - 1]
2 O, p: f- J1 B9 Q8 D- O) B2 r# iend
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发表于 2008-4-8 10:49:43
楼主
