请问：
: n- ]; B8 _8 v% f1 c( |" n" K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 ]/ {* a* j; g5 P) _' K2 ~" l
to setup
1 ~) U, P+ b4 X1 u! M" F0 |5 Dclear-all" o0 y( v1 P% S% b4 S, s
set-default-shape turtles "square"3 H2 v ^* d* |- F. r* A; O
crt nutrition
- f/ Z* g& z. G$ k$ Jask turtles[3 \0 a7 [- h4 H
set color white; [* D& v4 i# b! _$ t# D' f$ I
setxy random-pxcor random-pycor]8 K8 ] n7 T* L1 {5 h
) w; `: W. p& r. h$ N/ q" task n-of microbes-initialization patches# Q6 U" s8 r# T; k T3 @! u. K
[ set pcolor green]" Y4 ?& W. R3 s/ X
ask turtles [set energy 1]
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to go
2 p4 }& q" Q( \$ k& w) ^9 Y ask turtles [set heading 90 * random 4 fd 1]
! W* x& Y; Y) d) t( J9 E- Q6 B ask patches with [ any? turtles-here]
0 b; R% A4 s% H1 w [ if pcolor = green and random 100 < chance-of-congregating [tt ]]' j/ W% N: o0 q3 h2 {5 |, N% V
ask turtles [ if energy = 0 [die ]]
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to tt/ b4 R3 Z2 A; I ^% ^5 H
ask patches [set pcolor gray ]
8 G k) ]! i- s" @8 H; {ask turtles [set energy energy - 1]( e% H1 q& V& D! w; j# f2 d1 D
end
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发表于 2008-4-8 10:49:43
楼主
