请问：
z" Z, e( {. ]- r0 J1 [+ `; c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 ]
; G! R4 K- `7 T, jto setup
$ W3 A# F$ b i5 A8 _clear-all9 [& U2 L( I# K y' l
set-default-shape turtles "square". y: G' x" y1 B5 H' W6 C6 U' W$ P
crt nutrition$ [: L7 Q5 y& i
ask turtles[ j( E, [1 k3 P7 ?
set color white
: N2 g/ u- a0 y$ C1 Z setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches
+ P g3 |4 n& t: u$ @ [ set pcolor green]
, B, U* n+ t' F ask turtles [set energy 1]
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to go
" a1 _& m$ F& ^2 k* I ask turtles [set heading 90 * random 4 fd 1], |& h( G3 [6 _; a
ask patches with [ any? turtles-here]
1 R/ P/ C. F9 b0 z: P [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
$ O8 j, _6 j$ S9 l/ S1 d ask turtles [ if energy = 0 [die ]]
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& J0 [" K! ]( G5 W9 a; Kto tt
" h& d' _1 K d* W$ Gask patches [set pcolor gray ]- y3 I8 W. t' W) B% L; x
ask turtles [set energy energy - 1]* b. Q2 U7 y+ o, {0 y
end
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发表于 2008-4-8 10:49:43
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