请问：+ L, s# B1 n! w+ x0 ^3 i7 h+ X
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？
% c7 B8 t* ]3 n
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turtles-own [ energy ]
% Z7 P& {4 y, Dto setup
" _- t+ f6 s6 b( V8 rclear-all
+ Z4 q9 M1 F, B$ u- Lset-default-shape turtles "square"
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ask turtles[
3 U+ p% }5 v4 p# }3 m( k/ _/ O- }, M set color white2 y' a& p9 p @ c1 N
setxy random-pxcor random-pycor]. [9 ?1 l7 O; G& B
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ask n-of microbes-initialization patches
7 e# t. M, q8 b: J* S- d4 a! c [ set pcolor green]
4 }( `5 d0 Y# F& _' m ask turtles [set energy 1]4 E' v# L' F; G' Q- f: K; d
end
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to go
! q6 c! m* o: I$ A$ _' W ask turtles [set heading 90 * random 4 fd 1]
! Z% `8 N, l# g2 }2 [( O4 U/ p$ y ask patches with [ any? turtles-here], k# X2 l9 r* a! q5 e! D
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
% H/ i0 u; a, V8 X5 {/ Q3 i ask turtles [ if energy = 0 [die ]]
- k0 y; ^0 R! }; N1 a( } end
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to tt
9 n. g/ a0 r# \, c5 Q* g/ ]ask patches [set pcolor gray ]
$ l* l4 M Q4 [) }ask turtles [set energy energy - 1]. v) t) R4 B7 _- f( s% o
end
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发表于 2008-4-8 10:49:43
楼主
