我编的程序如下turtles-own [energy]
?* P) m1 `" F, lto setup2 |" J( J: t/ L$ a/ k* L) B
clear-all/ D/ S/ d" l; m6 z5 @5 _! P
setup-patches
) \, x1 S' Z4 K% `/ g create-turtles 100# q6 K9 n% _8 {; Q0 C+ W& x0 _
do-plots0 ~3 ~% u2 g: }/ F E
ask turtles [ setxy random-xcor random-ycor ]0 E! ]0 d" p* |; ?* ^$ M
end
4 {0 C! s8 V1 R: J6 T& G, }to go
! Q/ B% @' [2 _; c9 i! s7 _ move-turtles
3 c, K9 Z; C: z7 w/ ] eat-grass. e5 @- {+ l9 V f4 t
reproduce3 i) `* X4 ]# f
check-death9 J7 @6 T5 _7 }7 k- I) T
regrow-grass1 L$ t* _1 W1 Y' w! T0 S
do-plots
2 t3 e I: ]4 C& pend5 S4 ]6 U" B; U
to move-turtles6 V: K# v/ d6 l
ask turtles [4 F( ?) w8 {- W& \2 _4 Y
right random 360
* z: G# S4 g# X4 e* \: v' E forward 1
3 i/ p( ~" C* p" a0 M1 ` G set energy energy - 1: |9 m5 z8 |& v
]) O* I" h' w* L( Q, }
end
1 B, `/ ~8 U5 F6 `- H; r4 d8 u5 T6 Ato setup-patches
+ M) K5 K6 D# G ask patches [ set pcolor green ]
8 h1 n0 A" {5 A* |' g, q' |end2 d2 y: m2 t! G$ r% n8 [5 z) D
to setup-turtles7 S8 {) @# n7 j7 _( h9 u: x3 k
create-turtles 100
7 l* i; s; F G$ i2 d ask turtles [ setxy random-xcor random-ycor ]4 Y. {2 m, X! Q* d
end! }) W8 l: I3 Z; P; n( j
to eat-grass
3 R: `4 I. o1 T8 E' t' ?! l ask turtles [
$ K: T) t0 S7 I2 H7 R' s if pcolor = green [$ e* M- @$ W% ~1 k, S: n0 C1 Y
set pcolor black! E0 j9 P+ s4 \0 N# X! ]' M5 K
set energy (energy + 10): r# p" W- W7 e
]+ T& D' l0 ?1 ?; U
ifelse show-energy?* @5 _6 E* }1 Q; |3 u- A% d1 n
[ set label energy ]7 h: O* h) Y; e5 s; h1 x
[ set label "" ], W4 y$ p- j: ?: D J& ?# Q
]3 i9 f% T" l; U( ^2 B& U4 l5 v
end
! L; \4 C6 n" P. Z: ~2 [' D( p5 s+ ~to reproduce
' k7 F# O1 f& d ask turtles [
. e1 Z+ s# w' o if energy > 50 [
4 b2 F$ y; S/ i$ H% w% Z4 u" Y set energy energy - 50
1 W3 |: Y6 s3 O- _' k" e9 ?: g hatch 1 [ set energy 50 ]
2 c7 m F, n" G7 ~* U. k& j# }1 { ]7 l8 R$ _" `1 Z) X
], ?: d+ s1 z) J' a$ E+ k3 @4 ]
end
5 C3 ]- S" ^3 Oto check-death
' }& R7 z1 W8 F% f1 }& J ask turtles [" S3 _. \! B1 l y: v) T
if energy <= 0 [ die ]: B& ?) }( H' H( ] W$ S/ c
]
) p1 n# b3 M) y) H8 i$ Vend
7 I8 e/ m" z9 R! oto regrow-grass
0 Q9 L1 \5 V& m, A; t( q- z ask patches [
2 F2 K7 E) j$ P6 Y! p$ ?* V. l if random 100 < 3 [ set pcolor green ]
. v- t, e# o+ f% W) D+ F6 g/ X/ K$ E ]9 B2 G3 b# }. i. \/ U3 [
end0 Q0 t: K( p, o1 I
to do-plots
* U p: L& B. J% B' m- i$ ^: | set-current-plot "Totals"
0 v) t3 a: Z1 y: O0 V set-current-plot-pen "turtles"# E3 T8 ]3 J8 f) b+ q+ W# y
plot count turtles. k, x1 m; t' F+ e
set-current-plot-pen "grass"
8 I" I2 X$ M- ^$ P. A plot count patches with [pcolor = green]
# t7 a: f: X( ~# a% Yend
* o- z A' p+ q9 Z! E可是运行时提示no such plot: "Totals"8 `, [6 Y* u4 T0 E. n' I8 y ?" P
error while observer running SET-CURRENT-PLOT
) m |5 x: C2 i- z- T9 k called by procedure DO-PLOTS
1 O- q B# R/ Z5 v, s, R' b7 N8 D called by procedure SETUP! h( _4 }& b% A: ?* p: h9 m( f4 c
called by 按钮 'setup' b: B3 `. y/ r, c
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
