我编的程序如下turtles-own [energy]- R+ y3 k6 R d: ~) O
to setup, n$ O7 L- l6 R! w/ F
clear-all
5 o, Y5 Q# ]1 Q) @! j/ ^ setup-patches
- Z( D: u/ N" U$ c8 B7 M3 F create-turtles 100 k# w+ }3 m, x5 \0 Z1 _ w
do-plots
" Z9 G6 O% C9 T* z2 i ask turtles [ setxy random-xcor random-ycor ]/ t; J; w9 u! z% |6 w
end: \" }' h! \2 u
to go6 D. H' g0 e9 O j
move-turtles
) o+ {: p- o0 H+ h" W% P eat-grass
" q) \" e# K4 F5 U* b; _9 \ reproduce: W7 d2 Q( ^0 c: y6 ?" P
check-death
0 W9 a3 Y+ x1 ~2 i3 A2 L2 Y c regrow-grass
8 v" ^# Z( y6 n! ^; n do-plots
. i5 V. ~0 V* I/ l. b8 z* G2 ?end* b; U$ @% e% w- s7 z0 L
to move-turtles
+ _9 r( ^6 J* B% k ask turtles [
- C) a' t* S2 f: H right random 360
5 l E+ l& ~) ]. g3 c& H forward 16 v& N( \& o* U2 q5 H% ?* }
set energy energy - 1
+ w8 e! R' F- p) K ]
) Y1 F5 F" I: F* J& nend
$ w" Q# J; y7 [3 Nto setup-patches
0 E: l5 Y( Y8 o ask patches [ set pcolor green ]
+ Q& ^9 x- l5 kend8 b) R# T7 h( y( W* `
to setup-turtles
* V3 I3 p! d- \. w+ r( D; A create-turtles 1008 p: B# l& p* x9 h: p) F. O
ask turtles [ setxy random-xcor random-ycor ]
6 Z, _1 \4 ^: t* ]% gend8 q" _ c% K. n {
to eat-grass8 D" P4 t H' Z/ L
ask turtles [& I% P7 T$ ]; s5 j
if pcolor = green [( I) f* `% Y' f" J8 K6 T% w' j. ^
set pcolor black: S- }: f& H3 E# b. j, x
set energy (energy + 10)2 S% t- t1 i# C; `" b: K
]
% P) G9 N' C7 i1 I' Y ifelse show-energy?# D$ ~4 y% b- l) _* G {
[ set label energy ]6 H' }9 B }+ t/ n6 _- _
[ set label "" ]
1 a% a( l( m; e1 U8 M% h ]
5 c: |% y, @( _! b/ f1 O" \end
5 x% e. K! O9 E7 `/ Jto reproduce
- ^( ?1 I" Y! R9 L; m$ k1 m ask turtles [
# q3 S6 _6 @& y8 {& f! ` if energy > 50 [6 X$ M& H5 x5 ]+ E& ?4 O
set energy energy - 500 M0 H+ w% a7 y8 ^1 M, |+ i3 v
hatch 1 [ set energy 50 ]- z% s- J [2 p2 }# c4 [
]8 I, C" V7 h% E* Y
]
+ W- ~- m: d4 w. y0 V# Hend
* o( h3 R }9 R, l; I: P% T4 `to check-death
8 I8 [- z1 K8 Q7 {' d- `; Z: J ask turtles [+ d5 I& M0 H# E4 s/ V
if energy <= 0 [ die ]) @5 |" D: O6 B1 q' z
]2 }7 [, l' E- c; |% J
end
: u. r s. v; a. G+ h- dto regrow-grass
& b5 U7 a1 m2 o3 o8 H# I" A ask patches [
0 K# b* _4 V, p4 V8 h# G, Z+ ~ if random 100 < 3 [ set pcolor green ]9 N3 B* b" B& i* h
]
8 B$ Q2 h9 t/ k5 |end
! d8 I& M R. t- Z5 `1 j, gto do-plots: V2 V: A m2 A' V2 Q Y
set-current-plot "Totals" T! }# F$ G/ ~! g& R/ |, }% J
set-current-plot-pen "turtles"
! @5 \$ R9 D* A- r: s) {+ R plot count turtles5 ^; v$ g/ U( z. X: X
set-current-plot-pen "grass"
r5 e/ ^ j. l* M% m plot count patches with [pcolor = green]
* D3 h- T) q I3 Lend
( I' g$ E; u! l( z' \) k& O! q可是运行时提示no such plot: "Totals"
7 ~$ v( L3 T# a3 q& q* Rerror while observer running SET-CURRENT-PLOT& F- y3 a, o7 I% x
called by procedure DO-PLOTS8 U1 ]. _6 |( Z- |7 M- O- c# t1 l
called by procedure SETUP# ~" p8 i6 f7 R# f2 t; w
called by 按钮 'setup'
6 P& z5 J. M8 S3 u2 [; m求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
