请问：
" ~: c2 S, F- ?9 o9 O E8 R$ 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？; }' h3 V- Y; Y) S* Z
4 F8 i y. R R( c; y
4 G2 Y4 K: L$ U# Hturtles-own [ energy ]: g9 i* `: z+ _2 x5 p& j4 h$ m7 K
to setup! `. t; e2 J2 B$ d( W3 G
clear-all- w) `# q% K) @6 p
set-default-shape turtles "square"7 z$ M7 }) \) F+ J# \! x& E: z
crt nutrition% @8 _. z2 o! [3 d m% i/ l
ask turtles[& p( K, x$ S% X3 {
set color white
4 m- p, ^* [3 O6 q( J1 Y setxy random-pxcor random-pycor]
' C0 C2 i. l' [6 H
' X% V) B8 z: G: Eask n-of microbes-initialization patches* O. Z/ q% s+ d, {0 E0 r
[ set pcolor green]
7 U+ J- q2 [# Z* e# Z ask turtles [set energy 1]- B( Q$ L! P, p6 u) I5 @' H
end
2 m. o5 C! H* ?& D- ?$ t7 {9 { i
to go
5 ]3 _2 e" e3 u: S/ V' ? W ask turtles [set heading 90 * random 4 fd 1]9 ^# {& N6 F6 p' A4 c% \$ L
ask patches with [ any? turtles-here]. @2 C, d; O" [2 c& i4 ]
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
0 y0 ? S8 q( k ask turtles [ if energy = 0 [die ]]
( p) _9 t$ w1 ~+ h$ b$ K- J end7 `/ s- G8 K* s# X8 [
% x: I7 u0 i. k$ J, `7 ] D. ]to tt( r) ]: ?, W; C1 u
ask patches [set pcolor gray ]
0 h' E" k0 C$ G: Q. B, B4 xask turtles [set energy energy - 1]
" \. @! P( U% x) Eend- h. H2 c+ k1 d! W; S& L
/ D) z$ V% {8 H2 I8 Q/ o, u
|
发表于 2008-4-8 10:49:43
楼主
