请问：
* l6 C `" k, M; 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？( H" \2 A W8 v1 Q q R
! q: N, s! s) c& p
( v+ Q) f6 S1 b5 ?" D$ m3 v4 K( v6 l. ^
turtles-own [ energy ]
% p+ ?+ H; n/ f- }% n4 Z' sto setup/ g! b6 y" Y2 X: U8 j, E* [' o1 _
clear-all
: S: g( ?: R7 O& p5 r( A8 ^set-default-shape turtles "square"9 E( m" U9 u0 B# r w
crt nutrition
; F- c. ~6 @6 T: mask turtles[
2 x( ^5 B0 R1 v" t% ]- [( A set color white
* j/ ~' _6 v# R! S0 Z$ f; w setxy random-pxcor random-pycor]
8 h! ~: H+ A: o* U3 e
! ~$ W' S! G2 a2 f0 Mask n-of microbes-initialization patches
3 j+ _9 _+ P9 ]' H! i ? [ set pcolor green]
; \* I6 k& o7 D: I8 u0 ^; y" Q ask turtles [set energy 1]9 c7 X# N2 Z ?$ y
end
`- G/ c) H7 i) Z# E1 u4 }8 f7 M' y6 I( N+ P# R/ }3 x
to go: e$ ?- _1 j/ p
ask turtles [set heading 90 * random 4 fd 1]
/ W) ~" U) ~& v, \1 i- ~8 z( A ask patches with [ any? turtles-here]
: F9 r' z9 b6 @" R9 m8 c [ if pcolor = green and random 100 < chance-of-congregating [tt ]]# ?4 ]3 D% c% m: U* V, A
ask turtles [ if energy = 0 [die ]]
2 L& J& j+ y k; q0 m& M end
' A ^0 {$ O7 h+ y. R0 f- | B3 f! U7 p# S
to tt
/ M) {* ~6 n6 ]ask patches [set pcolor gray ]% T" r8 z# Y0 ^
ask turtles [set energy energy - 1]
: @7 D2 j3 J4 E/ Bend0 L8 {& K/ b6 S
6 V1 o$ l& N. f3 G8 V
|
发表于 2008-4-8 10:49:43
楼主
