我编的程序如下turtles-own [energy]
/ K3 j) N, D4 }- p* B+ c5 N0 Oto setup$ ?1 H& I, {; h( z. {+ w) k
clear-all
1 i' g1 G& v. ~' U0 |% x M setup-patches9 X, N% A' w' {8 J
create-turtles 1007 Q. W+ ~: \3 Y& ^" |
do-plots
) {* r* p& J, Y4 [ Z. J ask turtles [ setxy random-xcor random-ycor ]
# p; t% R+ x: i5 d% Bend5 q V; J, y2 b; Z9 i; k
to go8 M: o) e+ A u9 m# X
move-turtles( v; g, I% B9 z- m+ \
eat-grass8 a) z6 N& n+ A1 ]2 Q* M5 M
reproduce! R% g2 A$ }2 s4 K% Z3 [: j( t9 W1 D
check-death. ^3 O3 l# u9 Q+ e& D4 z2 B2 J# D0 c
regrow-grass% {* M8 O! W5 i' o
do-plots
& K% _, ? @( r) F ^" send
- ?6 q# k# p, n/ @6 E5 B6 `to move-turtles; ~2 c. T* C7 l' h2 r
ask turtles [
* m+ V% D" s0 p( Q" E- _9 G right random 360. a2 _4 i4 B3 a" \
forward 1; K' |* v, e' `2 O
set energy energy - 1
# s) y# V' L* x* O& H& g+ N ]
5 k3 I! M, Y1 r8 u' M" [end
- b* R) ~2 T! F6 }2 ito setup-patches3 s) T( b( V0 v+ u
ask patches [ set pcolor green ]
3 I: Y' o8 l. D1 X8 V. t3 i% Gend
/ C( j; t/ ?' _% `to setup-turtles6 c* l& i5 e- a- B. |1 b
create-turtles 100/ t- x. @" X9 [! i L! r. y
ask turtles [ setxy random-xcor random-ycor ]
+ Z q8 p0 T& R oend% L: `4 m' |6 i8 X
to eat-grass/ \+ D, n9 P& C* o, ]7 v" |, t7 F3 v& o
ask turtles [
9 }5 l3 ^- K, k if pcolor = green [
9 V: r5 P2 B2 _7 i. s- A4 o2 t set pcolor black
. b! m3 ]" s- D4 q8 M$ \ set energy (energy + 10)
% v% Z4 M1 U/ K6 Z9 ?0 s ]
/ R8 q- }4 T+ A# S ifelse show-energy?
P$ M0 n- g$ L5 Q4 t [ set label energy ]) F1 f! {1 d% \, m
[ set label "" ]0 i6 x, v& a- t6 A# z3 g
]% G: R5 \ J' W/ h$ ^+ j
end/ ~3 V3 X% q2 J3 M
to reproduce0 \% C# M3 x" D4 l* n
ask turtles [
4 `; a2 k5 i' N& R# e# P if energy > 50 [/ o& c! G* M+ Z# T
set energy energy - 50; S ^; b/ x) m" j0 S1 X. h4 q
hatch 1 [ set energy 50 ]3 J1 M7 U2 a+ r/ t, a$ W
]- i4 ~0 j) W3 ?2 `& g) f
]
% I8 @! I. s% @& c: }end, \, n" ^; v+ O+ }" E% M4 Z. |
to check-death
* { K' l2 ~; v ask turtles [1 Z8 \# F0 f, P m' `
if energy <= 0 [ die ]
/ S# k: B- d" O8 N1 y( g ]7 v2 g' j7 \3 _: z& _
end. Z3 Q$ _5 ^! r) K0 U, [
to regrow-grass6 B* ] q1 V0 W. G# p8 @( } }" T
ask patches [3 t& U# R8 Q1 x5 x6 e" w( P
if random 100 < 3 [ set pcolor green ]
# A; Z$ v' c: d/ r% N ]- O3 P, N' K$ W0 P1 i" P) b8 t2 V
end& k* a% A. l/ W$ } B
to do-plots
' i! `1 d J |5 V! U set-current-plot "Totals"
+ M3 _: a% f! Q: @ set-current-plot-pen "turtles"* K. b' a: V5 [5 x
plot count turtles; ]/ @0 ?. A( S# i$ j- Y5 \
set-current-plot-pen "grass"
l! a* l6 z7 m) m% y plot count patches with [pcolor = green]* e& m! _/ }: t
end' o; V" |- L, h! G* m1 a* {
可是运行时提示no such plot: "Totals"
& h3 u8 K9 e% q- K5 f; K5 i6 Ierror while observer running SET-CURRENT-PLOT
$ m d G# @$ W2 b9 V, q8 E: k called by procedure DO-PLOTS* |( Z. }" G. b' u5 e; t2 G
called by procedure SETUP4 c9 `( A3 f1 R. T
called by 按钮 'setup'* U4 H+ E7 N" F: D. `0 l5 H
求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
