请问：
$ x0 ]# W. i3 @, {7 c- `! \' R9 F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 ]% p9 C$ |; b0 M/ L3 }2 k( U3 @% }
to setup5 @5 B. z8 e3 E# u3 ~: ]# T
clear-all
+ w; a$ z# C7 A- ]- t" x& K! [9 q% dset-default-shape turtles "square"
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ask turtles[
5 {9 C4 q0 C& C. V0 s set color white5 y& R) E; t4 v' n& K
setxy random-pxcor random-pycor]
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! \ @3 G* m- Iask n-of microbes-initialization patches. h, M6 J: w. q2 [1 @
[ set pcolor green]- M& K# S- b) `$ O
ask turtles [set energy 1]
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to go$ }6 `; y7 }: r
ask turtles [set heading 90 * random 4 fd 1]
6 U( ~& t% p* L7 v( S ask patches with [ any? turtles-here]
% Y8 V1 |( |- {% r' U& w9 l [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
1 Z" R& T- I5 \! | @ ask turtles [ if energy = 0 [die ]]
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ask patches [set pcolor gray ]
0 q+ ?; S- v6 D' s7 ^4 ^5 rask turtles [set energy energy - 1]" [2 X0 S" M/ \# S, y
end
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发表于 2008-4-8 10:49:43
楼主
