请问：3 g- H: z; N9 h: o; r' m9 @6 ^+ r1 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？
' Z/ \) w% R, Y: A. {) C1 o6 X% o+ [ r0 M, ?
" W; X6 `& O1 e0 S6 z
turtles-own [ energy ]- p1 h. T- l! E- B
to setup
1 N6 C" ^3 e# q7 uclear-all
) i: B6 f0 P, q* {& f8 V aset-default-shape turtles "square"/ Q- l, d; {' ?/ w( k1 F" j1 k/ V0 o
crt nutrition+ g8 s Q- U/ [+ @6 H" J
ask turtles[
4 }' v( L3 ^: x3 n3 v7 `+ s set color white" }* R5 I9 w9 T; g
setxy random-pxcor random-pycor]! i; l5 p: m7 D8 c
+ O9 G% K& Z% n% L1 b" [: Vask n-of microbes-initialization patches
: T C' q6 O" n4 e5 Z0 c [ set pcolor green]
& i. {) |0 b. P+ W. F5 ~( L ask turtles [set energy 1]
: H2 a# {! ^; A8 n3 y5 i7 Eend+ |7 V0 f3 {3 ~; a
/ r9 R0 R1 p8 x6 @% z5 I0 V
to go
' a; e: a- p: G, `8 F* D, H8 z ask turtles [set heading 90 * random 4 fd 1]; O$ v2 z, E' R+ f. q. O6 i8 P
ask patches with [ any? turtles-here]/ x# } B8 M1 K! R2 D" Z& L9 f
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
$ p% l8 f2 X* X) J, s$ S ask turtles [ if energy = 0 [die ]]9 Y1 D. H9 r* T3 ^& x" V
end
. \3 U4 Y' t0 O s& f, V+ x& k; ?) G+ c( h
to tt
; U. j4 I. g' p" F6 H# E7 cask patches [set pcolor gray ]
2 s/ s, O1 `, Jask turtles [set energy energy - 1]% \% I% o* n/ Z% _" ~. f3 j5 \2 N) A
end6 |6 C. y/ A2 x; c
: o4 S1 E9 i6 ^) E6 E/ u4 Y
|
发表于 2008-4-8 10:49:43
楼主
