请问：! k" e6 l- V- e- M
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？0 A* k; F9 F" j
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% e1 a2 D- Y- w2 W3 o9 O+ Lturtles-own [ energy ]8 `) A' g9 ^) T/ m# `
to setup
1 i5 u& C0 u1 Y/ @/ ~/ W& A: Vclear-all# m9 `$ v# K$ H, K0 b; f R
set-default-shape turtles "square" L9 G. w7 @$ ~% Q) z6 a
crt nutrition
9 z1 X7 i& W: ^# K. `ask turtles[
% o. Y1 x e% ~- n set color white% e( M7 F/ S5 y* P- E
setxy random-pxcor random-pycor]
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3 u d# f% Q5 A; t1 xask n-of microbes-initialization patches
* z' x3 X; z7 R* K q9 Z [ set pcolor green]& h+ x \6 A0 a K
ask turtles [set energy 1]
$ l! ~. A) p. @6 S: d" k1 v% e- Dend
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4 G4 |- P( }; i* e2 E4 i8 C+ hto go- R" o9 X3 Q. G7 k d8 N" b& f
ask turtles [set heading 90 * random 4 fd 1]
% ]8 b( `4 r0 T( V; O9 F& h/ p ask patches with [ any? turtles-here]( U6 J) t; b" ]- x8 c
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]# \/ @7 C& U6 o1 O- D, ~
ask turtles [ if energy = 0 [die ]]
9 p4 K2 q" ?6 I* Z% z end
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to tt
# {* V s* I+ j) i$ ~. t4 Q$ [ask patches [set pcolor gray ]& c) \7 K& ]) f$ o: [7 L9 `
ask turtles [set energy energy - 1]" L# k; ~$ b' _& T) ]( n
end2 Y& F, Z- U( H) I& I( f7 G- w* l- P. p
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发表于 2008-4-8 10:49:43
楼主
