我编的程序如下turtles-own [energy]2 u% }" p. Q' I
to setup( _/ ^8 [, \) f. t
clear-all
- |( v, W$ T6 S6 h3 |7 P; H, l setup-patches
7 y5 t) w% z, i; n# H2 x. w create-turtles 100/ J, X! J+ i+ C3 G9 q& E% a
do-plots) _2 S4 ^ p$ U' [4 _; {4 D: [
ask turtles [ setxy random-xcor random-ycor ]
) m! b, c# Q4 U5 X1 v3 w, X1 ^end
0 _: \) f" J" b6 Z0 pto go' T: A6 E2 q3 Y5 U; X" e4 T
move-turtles
}' B9 v' W0 i$ _( ]* L/ u eat-grass
5 T E$ `1 D) I% G" U4 M2 C reproduce; \/ Y6 m! d& j, D
check-death
( K3 H3 i+ C3 |0 i3 s1 M- E- E regrow-grass
* t, V" R: e1 R2 D/ c do-plots
7 u2 l& e* K7 |end
- o) p$ ~ ?* y; T9 a: Q5 zto move-turtles, }3 f% M2 Y2 X; E
ask turtles [
& u; [3 D+ @# h. h5 ^/ e right random 360
0 U9 @; m, c6 S& ~/ p& } forward 1: R, M! C" ?* Q5 ~
set energy energy - 1
+ \+ [; I: W, J5 G7 p: n' s ]
/ H& ~$ k4 U: Aend/ w; Y8 O. Z: y1 x6 {5 s4 R
to setup-patches) v; Z8 f6 W( \8 T- m! s) C
ask patches [ set pcolor green ]0 d" y# T; G& p1 b4 G; W' b
end
4 \- u7 l/ h* t( Eto setup-turtles p; h5 C* E0 }( p( n
create-turtles 100
; Z" l3 L- y: ]' L2 N! s ask turtles [ setxy random-xcor random-ycor ]2 T3 P; }2 q; S6 h4 O- F! ~2 M
end. }3 b4 Q6 h" W/ M |7 K% F
to eat-grass
* ~7 i0 D( e6 ~7 u5 i ask turtles [
: u) U2 l# ~3 n4 ^+ B if pcolor = green [, y7 t! ]- r) `$ d2 b& V& D
set pcolor black' y. Z* O( F, i1 ?. n
set energy (energy + 10)
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ifelse show-energy?
" c% E& z/ k% n [ set label energy ]& h3 ^ o$ ~; u2 p
[ set label "" ]
3 C7 @% s! q3 Y( V ]* X' x5 f! S7 k1 ^
end
8 {) P; k- a2 Y' d# ~to reproduce
7 U7 k' Y# A4 S2 V/ ~ ask turtles [
$ J' ?( h* m8 k" p& l if energy > 50 [
: t$ b+ O3 ^5 d. ]5 k+ _) V set energy energy - 50
. G @$ J# H4 @ H! l& {8 P hatch 1 [ set energy 50 ], ^: } F5 A0 m* Y
]
+ P. b/ B! h' @- v1 f! E' p ]5 r7 n/ k7 T8 d8 p) p0 K
end
- V* j9 p/ z* d9 C @3 N! jto check-death# m& Z( ^* R8 S/ k
ask turtles [
- ] a! _# d; U( [! | if energy <= 0 [ die ]0 g2 b8 u w) v
]
0 [: o% J* h; B9 R3 |( mend9 C/ B( O' g U7 r7 _* ?
to regrow-grass: D+ L6 `- [, i5 }; V, ?5 b7 U
ask patches [
3 a5 | U# f2 c; \# _1 |; j if random 100 < 3 [ set pcolor green ]) D3 C' H j* j8 b( j
]
2 p* X d/ v( @* t L! nend
% S: K6 E8 c l3 Fto do-plots) i1 t, h$ r$ z
set-current-plot "Totals"$ b! L0 H, Z4 l2 Z; b
set-current-plot-pen "turtles"$ Z( }" l2 @7 b
plot count turtles
% C; l; Z5 O: I2 u, `( a4 A; ^. D set-current-plot-pen "grass"
, d7 L2 a% l) y* g plot count patches with [pcolor = green]
# T0 ]4 M u" c7 L, [1 `end% C% \# l& d5 u+ |* [& k* @) X* R7 h
可是运行时提示no such plot: "Totals"5 d6 V( G: b! W- z- S
error while observer running SET-CURRENT-PLOT
2 c6 M; H9 n% O called by procedure DO-PLOTS( C- D# F+ h/ y' _
called by procedure SETUP
) O7 f* m' J9 N$ n( f5 f called by 按钮 'setup'
; X f0 t6 L/ E+ \; ~求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
