我编的程序如下turtles-own [energy]
9 }0 n, F$ G$ d0 x8 yto setup
, N7 }- x% A) A, d/ W+ N+ Q# I clear-all
' |8 J: Z e. I setup-patches# U2 U; ^) l+ U& I; o; q, u
create-turtles 100$ e% V0 i0 d/ o+ z) P3 H( z: W) ?
do-plots
( i; {# m; B. P ask turtles [ setxy random-xcor random-ycor ]
' T0 w+ A" |6 m2 f" c3 t" F! w7 nend2 A( _; D [! g- F' h$ N6 Y9 Q
to go
; U2 `: a9 j9 V- H( d) n u move-turtles
6 j* k6 Q4 H5 l" V+ n, I eat-grass
, X6 r' B9 L- l. l/ F s" R: H- q reproduce) Q( n& H! D* }- M* v0 l
check-death3 S9 r7 |& P# E7 q- W! O$ R4 q/ j
regrow-grass
) v' ]& N/ c6 y7 I do-plots
( ^ z# K0 t* a* jend" F7 M; j9 N9 ]
to move-turtles
0 g6 v' Y5 _& y' H, G( O ask turtles [
0 ~% l6 r, s: `* u8 ?/ s right random 3605 ]7 K( c+ K5 r: u T2 W, y' \
forward 1
( _6 o5 U `5 ]8 E: j* g3 ? set energy energy - 1
1 U8 k& u2 ]% p# V. B% L% b ]
) ?7 b G( [! G' G5 ]+ {' L( r0 nend
0 T5 l. [% D7 F( D2 [# }. n1 C" ^to setup-patches3 S g. i: |3 T9 B; S
ask patches [ set pcolor green ]: f: w+ H! H, \) ]
end
, t: J* o) [. kto setup-turtles
z% T# w; w# T& \* J2 B create-turtles 100+ w- J3 p! R4 A. x
ask turtles [ setxy random-xcor random-ycor ], d* n; y" z- I1 C4 V+ R6 D
end
( y% F5 c7 C' k, p- rto eat-grass) s! C+ ?3 L3 }" W/ G7 i
ask turtles [ i8 f0 g) {8 m. T
if pcolor = green [
9 c4 n5 A* }; f set pcolor black6 [( o3 g' V- [& G/ y3 s5 f
set energy (energy + 10)$ R% n' r6 {+ Y2 N% W
]
4 c( n# R! l; O$ H7 |: i) {, l ifelse show-energy?
% i }2 h' Q4 y- ? [ set label energy ]- G0 t* r2 B: z) }& P
[ set label "" ]1 v1 s/ ]- u6 n0 K+ B% J
]
) ^. J/ O$ i4 U4 P5 B7 V y1 Tend
8 c* K! I- B+ L- qto reproduce" x+ }% ~( R& F
ask turtles [3 m3 p) S3 v9 l
if energy > 50 [
0 ^2 e, h& O2 a% n set energy energy - 50 n; N Q; x) x* Y( Y
hatch 1 [ set energy 50 ]
I8 [, V2 M5 W( h, J7 B* R ]7 n# O; u8 }8 s0 x" U
], H# Q6 r: g' d9 m4 ]1 P
end
0 B2 G3 D. J. v: L" z# f$ `" o: K1 Ato check-death+ v( V& O! u' g& W
ask turtles [. W- k3 a4 ~/ n9 U
if energy <= 0 [ die ]- {. A6 a6 C( z6 B
]
0 K; O2 W7 ^7 S& tend
7 p$ {7 {6 V5 e0 g. J) Yto regrow-grass+ t2 K1 O9 r, t6 @6 c( X+ K+ u( I
ask patches [* V1 h K ^& M, {2 C: z
if random 100 < 3 [ set pcolor green ]
. a9 N: N6 L2 X r6 ^; V5 ^3 r& b ]
$ X0 P) u1 r6 Gend
) a7 H; v2 E, Y- S+ T) b: [6 eto do-plots
: ~% F: \; f" p4 L( Q* L( l set-current-plot "Totals"
8 O% p' Y. W/ r; |" [ set-current-plot-pen "turtles"
+ y. o1 `% ~) p& p8 |- z6 k, e3 C plot count turtles9 _# v1 \" e6 {' m# E/ E- m/ R, A4 ^
set-current-plot-pen "grass"
" a3 ^; \* R/ y+ S plot count patches with [pcolor = green]
/ T5 W$ L: G% A0 [! x) T5 ^. kend% d( L6 @/ Q' X4 J1 O, A3 j+ W2 J
可是运行时提示no such plot: "Totals"$ O( P2 e5 [$ W
error while observer running SET-CURRENT-PLOT
8 A4 U- J3 M) k+ z* V4 Y called by procedure DO-PLOTS
" l7 g, x; B1 i- U% z# L; a called by procedure SETUP
/ E* ?% `* X5 `3 }! W called by 按钮 'setup'* c& B- l) v# J4 E, }" L T
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
