我编的程序如下turtles-own [energy]
' t, s: P$ s& F- o: Nto setup
7 L, G# N F+ X& ?, X clear-all
1 M, ?' r1 c" q/ d" O$ x3 F X setup-patches" m: G/ \, _% A" B9 H2 l; _2 V
create-turtles 1004 j5 }4 i' E1 w
do-plots" n! q6 ^1 m4 I8 x
ask turtles [ setxy random-xcor random-ycor ]
( Q. c8 c3 ~0 X, fend, V; E( L% i0 I, Y' K! Q8 _- N
to go4 z2 u Z! G5 G5 Y9 J
move-turtles9 M1 q1 ]$ o" C3 ^
eat-grass
+ b5 L) z# c( x0 p I) U reproduce
: S- ?' i& E9 G1 R* s( F5 ~! f3 { check-death. ?4 N8 _; W5 i x
regrow-grass
. f0 l: v; ]* X do-plots
. g# m/ E- K* Z5 {/ kend6 Z) q- }9 Q* I1 j# Z4 e
to move-turtles
+ i: I+ Z- F+ n/ @9 B# O; P ask turtles [) [& f, K$ I6 t
right random 360
* n1 ]8 I* W5 M forward 1
p7 N5 H T3 x) }; i6 f& ` set energy energy - 18 K: _' K0 x) `% B- N
]
8 v& G5 R, C* f3 c. ?3 D5 lend, i, C. ^3 f0 W# A5 v5 j& s
to setup-patches+ P$ k8 r8 W) d% x+ |$ t& g
ask patches [ set pcolor green ]
, Q* ?9 R$ N9 y2 ^7 u" `/ Pend* h( r/ G7 Y, ^2 O7 c1 k+ B
to setup-turtles
* R2 r2 A$ i8 F7 o" k. v; N! k3 d" q create-turtles 100: a4 c- t2 l4 {! M
ask turtles [ setxy random-xcor random-ycor ]" T+ k1 u0 H' a# H
end
1 l3 G& @! W. ^. Kto eat-grass) _$ v$ _! c* V3 r
ask turtles [' R- c$ M: B# ^0 P
if pcolor = green [
( X0 ~& W" h, K: I8 L set pcolor black& J, I* d {+ {) i
set energy (energy + 10)
4 \7 X1 F J$ t2 k; g ]8 q1 w4 r; m+ h0 e- ]/ u* [# k P
ifelse show-energy?
0 t, m4 y; U% ]! a- ?* o3 M [ set label energy ]
0 Y I5 _3 J5 A* f& { [ set label "" ]8 D5 q9 ^0 ^% z5 T9 K- {9 {
]
- Q) p; w/ X n9 C2 Tend/ V& o- |0 t5 u) Q7 K0 Z" W" I
to reproduce
# d) ~; v( Z( ]& } `1 ]2 |* f ask turtles [5 t" h+ D* T& ]
if energy > 50 [
2 Q, x, ^+ J# d2 C# q: @* e set energy energy - 50
7 o( x9 ~& K" S) }: F' ~) M* E hatch 1 [ set energy 50 ]
9 _+ f N3 f4 }4 r* C ]; X% Q |% _( [( H9 z6 A8 |
]& _ |- c7 i/ g7 A% Q
end" l4 U- U! c3 F; H! J
to check-death/ l/ @1 t. ]0 j5 O o! r6 }
ask turtles [
/ D4 j) j9 Z6 i2 V0 Y3 v if energy <= 0 [ die ]
2 W: |3 Z; N) Q& V0 k ]3 f2 ~" B* M! e
end) A/ q8 X% A3 j# a
to regrow-grass
5 M% w6 v& C% i) y3 x ask patches [
* j; }5 i# A$ e/ W* \! [- N if random 100 < 3 [ set pcolor green ], }2 F5 o; b! O5 l5 m& Z1 E
]
6 O3 Y6 f2 E5 P. fend
5 X4 ^ @$ f4 y. I& ]7 h: I; Lto do-plots$ q/ Z V0 t5 N! t3 c% V' X Z
set-current-plot "Totals"
2 {9 k6 M9 c) U/ g3 a set-current-plot-pen "turtles"
# t: u3 a' C5 H( u' j& M0 E plot count turtles
5 z0 R2 y1 e& X) d' l4 F+ X set-current-plot-pen "grass"
, T8 ^3 A: m' f+ u! d plot count patches with [pcolor = green]
6 g+ p& s; w0 Y) m9 `6 |* wend. B2 ~9 r0 x; U$ M7 G+ \5 p% A
可是运行时提示no such plot: "Totals"+ T- F$ a% [, `( U# @4 G8 H
error while observer running SET-CURRENT-PLOT
6 m/ Z2 P3 p+ Z/ I Z% n called by procedure DO-PLOTS# p2 {. p9 s+ P) L) \& w t
called by procedure SETUP! X# t, B, _/ U: p
called by 按钮 'setup'$ M( L. F: C0 G9 _% H1 g, W
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
