我编的程序如下turtles-own [energy]
) a& ~' |0 ~! l# ~. a. Zto setup2 N2 e6 C6 {( }# O& g. d- l
clear-all
& p# _1 z' Y; O, _4 H setup-patches" ]; g" o' g, P' d9 t7 z
create-turtles 100
& N# p' S [! U& D$ k0 t% y& e do-plots' T) w* [1 V- d# v" I
ask turtles [ setxy random-xcor random-ycor ]
/ D. g: N( s6 k9 d* J* fend) }+ |9 n6 K6 R) n- r, R
to go
2 j$ ~# m: ?$ P1 U* P move-turtles
$ J* m t" v* F" @# T0 x eat-grass: E% b2 }; y8 _. U! F" Z/ j
reproduce7 T+ _! a; W" ?
check-death
% o4 n1 K. j" q: w$ g regrow-grass
9 T/ H" Z# i8 h. S s* n$ r. u do-plots
& K* a: `8 g( I' l$ x. v, J0 `end9 r6 Z* F+ L0 E2 ~
to move-turtles
9 @% w1 ]6 V& c8 ? ask turtles [' S) d- B7 G2 K' E
right random 360
- Q4 V+ k+ y! r forward 1
) W$ ?' V8 c9 L6 P1 Z# l2 u# ` set energy energy - 1- D8 h3 G7 Y c- D/ O M1 p6 F0 i
]
/ @, T% {. D- l- _! z3 p1 |% @end, ~" \" {2 c. v, |) n% l1 _9 o$ P; W# K
to setup-patches+ \9 h7 T; O: U! v R, |+ D
ask patches [ set pcolor green ]7 z) D0 h$ `* \& a1 U% H6 M
end3 B3 [+ S. g `: A m* O: Y* _
to setup-turtles' s4 e6 [# e8 ^! `5 ]
create-turtles 1003 e: K$ p! ?0 ~
ask turtles [ setxy random-xcor random-ycor ]$ H$ q* l7 V' d+ U# p( O+ R9 ?
end8 S' r+ j. _4 _& x- I
to eat-grass
8 x8 c" R5 C0 R; }2 J& ]/ ^; u ask turtles [
1 v" Y; ]0 y4 K if pcolor = green [$ n* i) P p, u/ L& D7 @% X
set pcolor black
. E( a8 K/ ^! e- E% W set energy (energy + 10)% i4 Q% e. c& M6 c- l
]% A" `' o0 x9 Q' |+ D$ J% l2 m
ifelse show-energy?! g: j" I+ Y+ t) Y4 z3 ?
[ set label energy ]8 l9 y& m ~; M8 |9 E8 P- w! s: P) T
[ set label "" ]6 J2 Q# E1 o+ Z0 e2 X4 _
]) R$ U% j+ O& f5 G% J3 v
end2 g: w: ~: ~/ W% p: I! _4 Z, @
to reproduce
/ y7 F- `" Z% J: M3 \ ask turtles [
& k1 f, l% ^) U | if energy > 50 [
% j. S( _8 Q* d. N+ k set energy energy - 50 ~ u# ]7 G6 Z; x" }8 e
hatch 1 [ set energy 50 ], d. a& @8 m B, m( n
] a2 f& x f) J7 L6 P, G- a) E' S2 E
]: _7 M! _! u( ?
end/ D; E- X2 P; r
to check-death# z/ a2 I$ S( I4 A; M- _1 v+ z$ G
ask turtles [
9 k2 _6 n- E z- ^6 Z" w if energy <= 0 [ die ]1 ^, h7 ]$ }5 f0 h
]7 r7 l5 Z# n3 g' R
end
# P: {% L- [1 t- _9 f `5 H% yto regrow-grass
], h2 T: g. k" L% ~8 c% { ask patches [$ y5 q) V7 U2 I! {' j
if random 100 < 3 [ set pcolor green ]" N7 Z* f$ k8 N4 T; G0 }
]3 a9 c8 `. ~/ W' j& i6 X- G. T
end
1 k- t' h2 y% `9 N B' Jto do-plots6 Z( J; K' k3 j% I" l% f' ~! ^- R
set-current-plot "Totals"2 N+ m2 _9 O& ^: K/ H f
set-current-plot-pen "turtles"( P/ i$ s. ~; p; }- H9 f
plot count turtles3 h" f3 q8 B# M3 D- d& F
set-current-plot-pen "grass"2 J) t; x f" C3 T. R4 z3 q
plot count patches with [pcolor = green] s- ]) n- ~% o9 k9 v
end
E% {1 D' _% u; X) b* z; A可是运行时提示no such plot: "Totals"% K- W+ L, v3 @# m
error while observer running SET-CURRENT-PLOT
) a* C) k4 c1 d; ? called by procedure DO-PLOTS
- n1 w7 t' L& p) s! U+ d called by procedure SETUP9 f( y% R% g) Q& w1 b0 S
called by 按钮 'setup'" U& p- n; B$ E* C
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
