请问：5 [9 s0 t/ ?( d Y3 t& 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 ]0 e! L1 G# J4 A( b& z- [
to setup' y+ h7 X$ z( t( h* z4 d5 L
clear-all6 ]- D) ?+ h& v
set-default-shape turtles "square"- Y: F5 W( q! i! g- ]! D9 ?; ?" T
crt nutrition0 ^2 b3 O0 v( Z
ask turtles[( A" ^& c* X3 ^% I6 r& p" `
set color white
; r4 L* P. P' L! R% u8 L! x' s setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches0 u( f7 _ T1 ^6 Z0 g3 O4 M: f
[ set pcolor green]
4 V- h- }+ G% J, r7 N! z ask turtles [set energy 1]
1 {( w: i0 U I! eend
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# Y) v3 D& G8 ?1 J& [% W6 @to go
2 H9 F/ x9 @; C( Z3 \, |4 | ask turtles [set heading 90 * random 4 fd 1]
+ f [3 k/ u$ x5 X8 s ask patches with [ any? turtles-here]
6 j# u T9 u+ f2 F [ if pcolor = green and random 100 < chance-of-congregating [tt ]]3 k8 F9 y" M' }) d- n
ask turtles [ if energy = 0 [die ]]* Z. R: o! Y- f
end" l5 P. }: J1 t- Y2 ?6 @/ w' G
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to tt
$ ]! k4 \+ ]" w, {' o8 r+ ~6 x! Lask patches [set pcolor gray ]
. C6 ^# _) p# C2 Rask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
楼主
