请问： _8 B5 C1 F. m: G
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 ]) B$ C; K/ H/ i$ _6 {3 |* X, W- O7 ~
to setup$ y2 k8 |! T- K: K0 \
clear-all
, p: U1 N' l0 x8 cset-default-shape turtles "square"
7 b. i: w3 x7 ]4 Q# ]crt nutrition
; q f5 y; |# `( m, T; M/ }/ N9 \ask turtles[
5 h' N' W* R$ \ p/ C set color white
5 E' m' Z# T J" m; A7 m setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches4 Y! ~( s+ _* t, {# g- n6 w- n1 b
[ set pcolor green]
! M+ z. B$ c7 X ask turtles [set energy 1]* V( S3 o) t6 Y! W1 @4 u
end& w+ D& n( h/ ^2 ?, u) @
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to go$ E5 s* m! s4 X: A9 J% h# @
ask turtles [set heading 90 * random 4 fd 1]
* p& b; Z3 v! _/ C0 ~4 x3 ` ask patches with [ any? turtles-here]
: I, K: O" `" I) q8 F* ?' U [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
& ?0 h7 s7 v, u ask turtles [ if energy = 0 [die ]]. i @# A7 X* f
end
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ask patches [set pcolor gray ]
h! y' q. j; m: Gask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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