我编的程序如下turtles-own [energy]
1 I7 _8 s3 c( l# N% x x( M8 t* _$ Zto setup
2 Q$ d2 Z) Z' _5 }3 G. R& A+ x clear-all* h0 ~( \, K6 }, o( `
setup-patches
) d, x6 g- l" v/ k create-turtles 100
$ {" f# ?# h, Z do-plots
$ M" s" K3 v" F1 V, j ask turtles [ setxy random-xcor random-ycor ]
2 R% U# C$ `! U. E: Bend
5 U* y, x" i9 G8 I- Jto go
' c9 o1 l1 X6 L) l. a+ e move-turtles& x2 S, Z0 D+ @7 b0 M- }- }
eat-grass1 S3 C5 L- ^! k5 |% c9 e L8 K
reproduce" V& M6 x5 E, e5 ^
check-death+ ?% t$ p0 z& h5 ^: g1 g
regrow-grass! e1 @/ a( A( U6 M
do-plots; p; T% V' t& h- i$ E
end
0 V/ p/ @0 ^3 r% f4 I7 |7 lto move-turtles! A3 V3 @; e4 ^* i I
ask turtles [+ Q. p7 G$ m8 o" Q3 N+ R& w$ ^
right random 360. V5 O/ ?1 {! g5 y4 F/ J
forward 1
" s5 i6 p6 C2 c* U% w+ f set energy energy - 16 I5 H; j2 t6 t3 F. V0 E' ^) J
]
+ e, [$ i# Z0 e: t/ _3 [7 kend2 M3 }) Q4 n, Q( L
to setup-patches0 B, E' F% p2 o1 n
ask patches [ set pcolor green ]
" C' {: S3 |1 G) [' Zend
! H3 h0 i6 m% a+ v& l: rto setup-turtles
9 B" q4 g' e3 ?2 b; ]: a create-turtles 100
/ E$ `3 Q; f6 i* ] ask turtles [ setxy random-xcor random-ycor ]9 \$ f- X+ l/ @* ~& P
end& n+ ?7 h+ h0 ?
to eat-grass- e1 G7 G2 n5 P3 R# Q2 r& F
ask turtles [7 q( r. k; E: V) L0 T5 d1 V
if pcolor = green [
3 i- h9 V* z- h% I* \) z set pcolor black- }1 B9 @$ O' S) f8 k& @& u
set energy (energy + 10): d0 e' w( M8 T
]$ A, I% ^7 X8 Y r$ y( {6 G
ifelse show-energy?
* Q- L. s1 X6 |. p! h [ set label energy ]1 }' R! I& o9 c9 z! R1 c
[ set label "" ]- K$ @9 }1 X0 J( N* _! s7 ^
]
4 k2 ]- _9 Q5 O" \$ D4 U$ [& zend
# N& O$ Z6 ?4 j; p% u8 ]) zto reproduce+ l7 l) i. v7 T/ w1 |7 x
ask turtles [1 E9 W. T; T8 c4 F6 x8 @" O
if energy > 50 [
" J/ I+ [' P# x. c- w/ a( C* |, _ set energy energy - 50
8 Q$ X. h% D- _1 Q. J- L1 s* L hatch 1 [ set energy 50 ]3 t C) `! v' L* o
]
6 [1 s2 D2 T0 A; @7 x. @ ]
8 A) \; ~) T+ \" C+ [0 `end
! c: y& |1 T: g; @0 G) U7 Cto check-death" `, s% S/ Z5 i5 s! d) a; [5 m
ask turtles [" i9 [+ B3 m& E) B p3 S4 M- F) ~
if energy <= 0 [ die ]# ]. y* [ ~; N6 u+ B
]+ L6 k/ M, A( l
end
' k' K9 D1 d5 z! Tto regrow-grass
( a- _# V+ B0 i$ u" u3 ~ ask patches [( q' d% s; p+ b, B5 {$ w3 r! V' B8 }9 _
if random 100 < 3 [ set pcolor green ]. y J+ F& [4 m+ w9 q
]8 d+ O( F5 j1 A8 Z6 K$ J
end
) @# I+ ^6 |, x* Hto do-plots
2 K' _2 g/ L$ e7 \2 H set-current-plot "Totals"! N/ _' C4 |4 H4 l' r2 L& ]
set-current-plot-pen "turtles"
! N# c- p1 }" C( E/ a- z plot count turtles) o( g0 _' e/ R0 k
set-current-plot-pen "grass"
. D( R- d. J% J. @; p plot count patches with [pcolor = green]7 m* b/ H. p8 C' Q) C# t
end
5 U8 K+ H. h5 O1 P! g9 G) S可是运行时提示no such plot: "Totals". l1 v2 a' K* e$ k9 A) A
error while observer running SET-CURRENT-PLOT# k$ H, m% t& p% G: l& b
called by procedure DO-PLOTS
2 q' h+ f3 z2 f/ f( U ?0 f2 J5 T2 I called by procedure SETUP% m6 |9 B: M; X0 N( J; q) I% h
called by 按钮 'setup'
# U2 T: m5 X, z- O( `& Y2 B9 u求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
