请问：. P% N3 z$ L! 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？' M' V' i$ J; Z: k
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clear-all
+ {+ H/ m% X6 cset-default-shape turtles "square"
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ask turtles[
* q8 n g' T; Z1 i* A( G set color white
- b8 q& }% S8 o setxy random-pxcor random-pycor]' u0 y1 c% p$ z4 Q$ v5 q
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ask n-of microbes-initialization patches
5 U7 Y% L+ r" Q* l* F [ set pcolor green]
7 O* i5 ^3 _; g/ _. @ ask turtles [set energy 1]
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ask turtles [set heading 90 * random 4 fd 1]' K9 n9 ]! v/ _. c
ask patches with [ any? turtles-here]" R/ p1 y' b. ~+ B C
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
5 H% M3 h; `; A ask turtles [ if energy = 0 [die ]]
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to tt% r4 r- }, Y( _2 U: [/ h- j
ask patches [set pcolor gray ]8 } ?: I# `( H/ O) @+ P6 c+ U
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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