请问：! r: {; d! }5 Z# e! F4 Q3 l
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？$ R8 k4 }7 }- L
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turtles-own [ energy ]+ z( Z _- o/ _6 Y) T6 E9 Q8 J4 p
to setup
7 K/ K8 W! k6 B. g6 q. oclear-all" m6 y8 T2 ~' F: g/ o. R
set-default-shape turtles "square"
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ask turtles[, ]' |$ b5 p# n0 B6 Z$ Y, y
set color white
; u6 V" n+ C: n8 `* @- s1 O' Y setxy random-pxcor random-pycor]- P( f+ x2 {" u8 k
$ ^# Z6 N& \) M. P" j; b% l8 Xask n-of microbes-initialization patches
% j/ q/ A2 o2 }8 J* a" H [ set pcolor green]
6 y8 ?: M6 T A. H' G' V" j ask turtles [set energy 1]
9 O; ?# G3 l" J- Y: b4 xend1 ?3 j6 d5 C7 P9 [* k
* v4 C$ i* R/ X5 r- Y6 k x9 b7 vto go% x( {- K. Y4 J0 P$ Y, u' w$ `* F
ask turtles [set heading 90 * random 4 fd 1]; R* r" A5 V! l( z
ask patches with [ any? turtles-here]
r# N( D9 E. f! O [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
8 N! |1 v; H, D" Z$ ] ask turtles [ if energy = 0 [die ]]
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to tt1 n* @2 F. d. n/ x" M: {
ask patches [set pcolor gray ]- X% f& p! P5 X0 g% t
ask turtles [set energy energy - 1]
) u& W/ ?0 a* s. P A& Dend
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发表于 2008-4-8 10:49:43
楼主
