我编的程序如下turtles-own [energy]
* S( ]7 I( `+ L+ r' ]to setup
1 w% B: j" u3 d" f6 s clear-all
, F9 y0 d# P0 h setup-patches3 w/ c! O5 I" q7 V0 i+ a& D8 y
create-turtles 100( l1 w; D( R, t+ d) ^6 F% t# R
do-plots8 ~, j" @" n5 l8 J
ask turtles [ setxy random-xcor random-ycor ]
) K! c5 I: F& _0 G2 J( hend4 c8 S/ y" i; q7 b, Z' {
to go1 e0 ^, K; g% |7 s+ T0 Z
move-turtles
' Y( ]+ a! ?5 F/ V8 ~) Q, s% C4 r+ c eat-grass
5 M% Y7 Y. o5 d# }& v4 o( s( U- Z reproduce
. O: Q6 a6 {* } check-death
, d0 K& f# O- e2 \3 W& V/ Z regrow-grass
7 @' S% U- X0 j. Q" e' i* h1 G do-plots: v2 O0 P! _5 z& b7 u
end1 X1 U* ~ Z, V8 R$ o4 ?* n
to move-turtles+ c, d# M* }7 C( h2 h
ask turtles [
( R6 w0 k' ]' P+ ~ right random 360' g# r* |3 ^9 k/ W
forward 1
0 ?( K w1 P- @! N; L+ ` set energy energy - 19 }' H& @* K2 X2 J
]
3 |1 c9 a d% _( z0 bend
. t( C) a' {* a& P3 R$ G9 c4 L! oto setup-patches
5 u4 _7 i- z# t$ T, m ask patches [ set pcolor green ]5 x Z9 m# \2 t4 P1 J. l7 c
end7 B- @2 k+ a5 k" O
to setup-turtles
% z. R- u" D' c. y/ }/ @9 x create-turtles 100
. `2 O& D6 s; a" G5 W7 M, {# f5 ^& }5 S ask turtles [ setxy random-xcor random-ycor ]' z$ d1 W" o" `1 r8 P
end: u4 Y4 |5 g6 z
to eat-grass3 `8 f' p( J" i- p. V3 ]% X3 L+ r( F" o0 V
ask turtles [
2 f% L; u% V5 |- n' E if pcolor = green [
( E" w5 \/ q/ d, ^# m set pcolor black
3 Y5 o( W: V% ^6 _% j1 W& K5 N, @7 E$ ~ set energy (energy + 10)) E6 ?$ M! u$ f" _, u: Q
], J$ P" q% M d& |
ifelse show-energy?
$ g7 K! O( I; ^8 p [ set label energy ]6 z! j$ s! O! ^# }
[ set label "" ]) c- M$ c$ X4 D t- h
]& p5 m$ L, k$ e! V
end/ C! o% _5 A4 D+ _4 v
to reproduce
, m/ c& x0 Z8 W: n: p0 S ask turtles [
6 L% V, g' x+ J4 h0 ]) T l: p if energy > 50 [- ^5 c3 N# ^# L2 w: y5 G+ T$ ?
set energy energy - 50
. ^% R. x8 q6 R9 m- n8 u! B- I hatch 1 [ set energy 50 ]8 G6 N! ?# A/ T4 \+ w$ c
]
, M, r3 K' E2 G P( E ] T5 e7 I) g2 R/ i
end8 t$ `) G1 E: w1 G
to check-death
) k& g; L) V h) C2 y4 @8 _ ask turtles [# U; j* d: Y; I! y" U3 P8 g
if energy <= 0 [ die ]0 s+ Z; }% w7 j5 n
]
; S' U5 k3 f* X6 tend! m* N: G1 b N+ X9 m% w4 S" f
to regrow-grass
, u2 Q, L! r O3 X ask patches [
. s; s1 J: g! K4 E9 n! | if random 100 < 3 [ set pcolor green ]( `; P. N. D( D. z8 P: ]
]
) B4 a5 k4 W/ R/ Send/ n4 v- Z s6 ~, b
to do-plots
3 r, O% ?4 m8 n6 x set-current-plot "Totals"( B1 e) W$ a- o
set-current-plot-pen "turtles"
( u4 Z# c6 T; @ plot count turtles5 J- y% w" n) D$ T# M, E7 f- x
set-current-plot-pen "grass", `- k& y2 i: P
plot count patches with [pcolor = green]
' b( p) t6 N$ g% T' [8 b. \* a* pend S& |0 r2 A( {) _: e; g' d
可是运行时提示no such plot: "Totals"; D4 U& g& {0 E# j
error while observer running SET-CURRENT-PLOT
9 x- d# }2 p8 y/ W called by procedure DO-PLOTS
) h" s+ D9 Y- h3 U2 @2 G called by procedure SETUP7 x: t- m' T8 I. B% g
called by 按钮 'setup'( Y# {+ ~3 m% _" S
求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
