我编的程序如下turtles-own [energy]
8 c# Z2 A) n# N7 w7 |+ zto setup! }) K N' v# b& W! C
clear-all c( x0 B. O; V/ x% k! _
setup-patches
9 p' y6 ]4 c1 \2 ~ create-turtles 100
) B; r0 e9 Z3 |' }: K, D6 { do-plots# ^2 `, I0 Y" _% z& H
ask turtles [ setxy random-xcor random-ycor ]3 A: \' r* L7 Z; U/ E
end- s4 p" f p) q: U- _
to go
' j$ F# j0 p/ j2 k' A8 n& x move-turtles
7 r* l E2 l( P* G. ]1 H eat-grass
) k/ K) H6 r3 p5 _% m6 {" S reproduce, S& f' `8 h, O/ X0 A* \
check-death( ^# z- w \ X& W
regrow-grass
7 X( Q9 l* z v do-plots- B1 ~9 B0 {; c
end
8 t5 Y. f. N/ s0 Kto move-turtles
; [# V* k4 W$ m ask turtles [' U2 n, w+ Q2 O) d& m
right random 360
1 o, n; l3 l& T3 Y forward 1
) h+ N. A5 q6 D( D. L5 c set energy energy - 1
& N! g+ n. k7 c' \5 R9 p ]
) M7 p: f* V; W% c7 m3 {( L Bend
; u; P( a: }" M9 Q# A8 uto setup-patches
& c* x/ S |% j" T1 u% H ask patches [ set pcolor green ]4 G, d* f- g7 ?: p
end
8 N, \7 R4 _5 {/ r6 H8 wto setup-turtles
) y4 J* _/ X: |$ ~+ d create-turtles 100( p* u" Q. A" E4 z
ask turtles [ setxy random-xcor random-ycor ]. e. @$ F+ n4 O# u4 O6 V, g2 U5 B
end: \6 z, |' F5 U' m& W3 r
to eat-grass
% J& u- C# `9 P" I6 Z ask turtles [! G- w* W( _; ?8 l( ]0 Z- _
if pcolor = green [
5 r1 S, j, Y9 M* t set pcolor black
. ~5 m7 W& i9 T) h set energy (energy + 10)
1 x) M0 v* k9 z ]3 p: c8 h' h/ m! k* J' U
ifelse show-energy?
1 P# d: O% t( K1 N f$ n X4 ~ [ set label energy ]
6 a: w0 Y3 d: D5 R. X5 F [ set label "" ], f( G* {1 C1 O6 G
]* j0 K! f! t8 y( Q
end
7 ?# Q6 C3 D; Q( c) |" U6 u( a Ito reproduce$ p9 h7 n! ^9 r) m f
ask turtles [
) T1 r7 k* ]1 C, |4 w/ a; n8 l5 H9 O5 ? if energy > 50 [ A) Q8 x) C6 a) N
set energy energy - 50
9 \7 l5 C, ~1 a0 d( M9 A hatch 1 [ set energy 50 ]
% V9 |4 c, q2 J# S! K0 H b5 v ]1 A! e) C E5 {* L j6 f
]
/ L8 Z* d$ D3 u: p& Mend
5 @9 X2 N9 t. ito check-death
- U, Z6 {+ o$ |5 i5 L! g/ E ask turtles [
! B& ~5 J+ W" U; N1 T8 O; }2 l if energy <= 0 [ die ]) Z- _: G7 c* j1 Y1 F H
]
3 t. W, G6 J5 N& X+ O! uend. `+ i8 b. N: q( q8 o( A( X' z
to regrow-grass
. K, f& |$ L: j. @0 A+ c" } ask patches [
8 V7 k( w/ {$ J9 c7 N if random 100 < 3 [ set pcolor green ]) Q+ {' q l( p( v7 t4 E7 l3 q7 J
]; e& u" `8 x8 @* i+ b
end
0 K9 z* V% {8 v* t/ sto do-plots2 n3 i7 `3 g) Z8 D4 q
set-current-plot "Totals"
1 Y( a3 ~5 Y/ r7 s# z4 y set-current-plot-pen "turtles"
! y: ^# J$ K0 y# _ plot count turtles
0 G" {3 e$ k5 X4 Z: K; W+ y' p set-current-plot-pen "grass"7 g2 c) T, q. z+ L
plot count patches with [pcolor = green]
' O+ S; S. v- P$ k; a$ M6 f. Iend9 ^& W3 s, i8 l: \9 n8 I5 w
可是运行时提示no such plot: "Totals"
2 B6 F1 { T" B) V6 S& perror while observer running SET-CURRENT-PLOT
( _" c0 n. v A- d called by procedure DO-PLOTS
' y6 Z" f9 y' K! l0 ?- K' j8 m called by procedure SETUP
" d4 s' E. `! s called by 按钮 'setup' Q3 I& ?3 I u+ \8 V: H* L$ C
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
