请问：
" |/ [9 y& w; u% n2 f* 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？) M7 E7 }' Y6 Z9 R2 D
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turtles-own [ energy ]
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clear-all
6 ~# T' K4 D2 S1 m4 Jset-default-shape turtles "square"; v# F2 h0 u& l5 ?) R
crt nutrition8 o. a6 V g+ R# h( s, z
ask turtles[
~# f" ?1 x1 H- t- h8 E# R i% L set color white
1 N0 P1 R" ~. [! }" v6 M setxy random-pxcor random-pycor]
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2 {6 w! O+ f* |. y" Pask n-of microbes-initialization patches; o! x' e/ v- T) J0 n8 _; ]* R
[ set pcolor green]
) M; G7 c2 a% N B ask turtles [set energy 1]
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ask turtles [set heading 90 * random 4 fd 1]
6 J1 e. P% m `9 j _ ask patches with [ any? turtles-here]8 ^9 l' K7 }$ s# ^
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]/ i3 a) R; [. ~, w; Z) j
ask turtles [ if energy = 0 [die ]]
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ask patches [set pcolor gray ], W/ M/ F! ]# Q4 b
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
楼主
