我编的程序如下turtles-own [energy]
5 m( g* i/ v9 D$ @to setup
# i0 Z5 b# J. N t, I' q clear-all; P+ Z' {* j5 v
setup-patches
+ k( L' V! E, p& H" S, l* M' x8 v create-turtles 1005 T, [( k$ [# i! Q8 r2 F
do-plots
1 {' l+ X) D2 D# S( e# V4 g/ V ask turtles [ setxy random-xcor random-ycor ]! e& X$ C% |: V7 ?) `1 z/ d
end
% M: h7 ?9 \ N* c5 Y! Dto go7 M* V5 o& o K T
move-turtles
0 i! D* H7 _7 Z4 { eat-grass
$ _) c* y! O2 o+ W; ~6 L2 x6 S reproduce
3 n* d& X9 c/ r! s( {) I check-death9 h) m2 t$ G1 U
regrow-grass* u* K+ k& P j+ u, N) y, w
do-plots2 w& Z6 v5 f9 F p' p0 s8 I7 `
end
( @- b$ U3 K2 J& h, tto move-turtles6 u& ~% j5 D: w5 ^3 g$ [
ask turtles [
5 Z7 {8 M# c" o: O" t right random 3606 Y/ A1 P- t# ?/ I# M
forward 1
. G3 W$ [0 e* Y/ E+ S2 H" ?: c& U( x set energy energy - 1
2 V, r/ }1 |* { ]' p5 K0 I+ f5 {- \; a0 x
end
- q9 }; }$ ^6 x; y" U/ ]/ e" C# Lto setup-patches
* z- ]3 ?/ U, \5 d" j ask patches [ set pcolor green ]$ Y1 V$ ]3 v+ R8 W1 I) D7 L0 k
end' _$ B$ s2 `3 O. [' W1 ~0 E; w
to setup-turtles
" p2 v7 ?+ ], b4 c# r6 i. g1 Z create-turtles 100
3 t0 A" S- \8 M! q7 U ask turtles [ setxy random-xcor random-ycor ]
" O& ?% H. S/ `$ b/ vend) e$ J2 _0 c; n) L! W
to eat-grass0 E2 w5 l' v o( O6 Y+ y3 ^7 e
ask turtles [
, W+ z: {5 {5 Q' H8 D% A if pcolor = green [ X% e! c7 E5 B# h) J
set pcolor black
+ V7 V, ^ ^+ C* \' l; x7 n set energy (energy + 10)- P- u& r. L* Q/ [& z q% L* v7 o$ m
]
) N8 E3 I; I( B2 o3 j# o ifelse show-energy?6 D# P. l7 [/ Y* n6 {$ {; t. @
[ set label energy ]
% X, x$ A. t2 T7 Q) q2 G" P9 Z [ set label "" ]
4 u+ D+ H |- O0 A+ ]- ~/ { ]
1 Q7 l/ i& L1 Bend. \2 W- l- e1 n# d1 f, G. {! V
to reproduce
8 U! K' D' W2 S+ o) S ask turtles [! @0 B1 n1 O2 D" }% X" f; Z
if energy > 50 [5 L+ c* g# s. n+ I: R9 P
set energy energy - 50* n) }9 u2 Z/ Y
hatch 1 [ set energy 50 ]9 i/ m$ N2 l( h+ a: y2 k9 s- b3 c! H
]
5 N3 L. ]" k2 h n# o ]
+ V6 E0 @! u- a/ zend
! C3 K. z* \9 rto check-death/ p: M4 x# e4 j' @7 N5 j( A
ask turtles [
7 G( E- P i" S9 P9 g if energy <= 0 [ die ]- ?8 u, ~; r }3 J i8 g R! S3 K
]- Z/ X/ b1 h' H' D. Y
end9 b2 f! G1 V* J9 C9 |" g' w
to regrow-grass
$ W! q0 ]% R7 X8 U$ U' J ask patches [6 \- X1 y& \% ^4 h# h
if random 100 < 3 [ set pcolor green ] M6 C& A1 Y1 n& @ H
]
* H( o' f# @8 k$ g, T6 W$ D _6 yend9 g9 N: ]7 p* w$ S; r1 b
to do-plots+ E- x2 [# e! n
set-current-plot "Totals"1 y8 X/ j- o2 F: J2 i
set-current-plot-pen "turtles"/ i7 p$ B/ h3 f8 k: M0 i% ^$ r4 i
plot count turtles
: O/ b1 o( [$ n/ Y: R- J1 O& F4 y set-current-plot-pen "grass"
+ a0 H& ~' f& w plot count patches with [pcolor = green]
) e. j5 @/ ~ J t: Q- ^end
) I- P: t( X( Q' T# N) q可是运行时提示no such plot: "Totals"
+ l) V5 K2 t) ~3 y" Ierror while observer running SET-CURRENT-PLOT6 k- f9 A" `3 P- O2 W
called by procedure DO-PLOTS. }- P) J3 U' W* [- U3 L( k: e$ \: z
called by procedure SETUP7 U0 v. n( O% G) Z% \
called by 按钮 'setup'6 \/ `5 B6 S2 ]) e
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
