我编的程序如下turtles-own [energy]
N7 e7 Q( O5 p$ q" ~6 Z% ~( j9 }to setup
* K+ R6 h" x0 \8 W& |; Y! h9 I8 Y clear-all
b# H6 j$ m* f& z, o+ x+ G; J setup-patches4 ^, Y* o/ d' p1 [6 p9 A# P" K
create-turtles 100
, p2 m5 q6 W0 W) K do-plots
4 j! b' }) l4 `" C) Z( u- s ask turtles [ setxy random-xcor random-ycor ]: V0 x4 O8 X2 a* j
end
& S8 }; f! ?0 K. nto go
6 B3 y3 R& ~5 b move-turtles
' ]7 H$ I% d0 I6 ^; g* w5 k eat-grass
- p$ N! S) ~- f. ]% l& x6 z) n reproduce! K: Q7 h8 d$ a$ r% n
check-death0 f9 M! _8 t* f5 i7 F( q/ o1 @
regrow-grass
1 ^$ _% U; H& w6 q do-plots
8 |: u' T: K6 R2 M5 ?* ?5 send$ L! d# x# X7 g4 ~) c
to move-turtles1 u& V( `+ f6 C2 w8 Y
ask turtles [' b+ P7 d% F: h% B; | J
right random 360* D% r# Z: V6 a- T/ T
forward 1
* X* z( c; r* w& V: b" [ set energy energy - 1
7 x1 L$ b2 w- U. b ]$ ^# G& J# l& _& R* A% l
end
& h: u) B& W- ]5 U& C$ q6 ~5 m- I8 L% mto setup-patches
! V6 a; M9 m$ h/ `5 y ask patches [ set pcolor green ]
/ q7 Z i9 z) q5 \& h2 b9 send
4 e8 s( k* C3 z' e l: [to setup-turtles
( N! L) r, Z3 p0 J7 F create-turtles 100
2 ~1 ]$ p3 F1 Q9 [ y, u; I1 y ask turtles [ setxy random-xcor random-ycor ]
8 G3 N6 K0 T0 W, Dend
( Y, Z {8 R( J9 h v7 vto eat-grass& f0 e' t/ h; C' D+ p" ^, V
ask turtles [; @% l/ I* t+ [
if pcolor = green [: F' @! h" ]+ ?' n) d! T
set pcolor black
; _; M) W% Y% D set energy (energy + 10); a7 y% G* e6 m4 S4 j, j- ?- `
]
) m. Y) i2 o5 b) }* d ifelse show-energy?
# l4 R5 V! J+ H' @1 V [ set label energy ], @1 A8 ~- V2 O$ i2 v) W, R
[ set label "" ]
% \! W6 E1 K- k/ ?* o- q ]3 @& `2 _$ Q0 f9 o7 { i2 z; g L
end
6 G7 b" E& E; e, A# C4 |1 V7 Kto reproduce# [/ r v8 |2 p1 h* C9 }
ask turtles [
! V7 ~8 u3 N( b/ q# w# Q; _+ K2 k if energy > 50 [8 ^' d, _, k5 j8 i
set energy energy - 501 F' c1 L4 d5 V: z4 Y1 B& \( O
hatch 1 [ set energy 50 ]
1 w3 r! O W5 T6 F& K ]
9 }/ j! F+ J, ?) ]& u ]
: K# a$ w# D- @+ a) L. |% pend* v7 o5 A6 y* W0 a2 V& G
to check-death$ I. F, C. D6 A8 Y; r, K
ask turtles [! U; ]* r- r% P: b' {" ]
if energy <= 0 [ die ]
) X5 e: o% k, S ]8 B" g3 o9 Y, Q, a
end, s, c' v% A6 n) B, Z @
to regrow-grass, i+ M' a: J( F* R
ask patches [
: b' H; v2 V& x) \6 x if random 100 < 3 [ set pcolor green ]
) I, Q* d5 ]0 V. O4 K7 ~ ]
m6 K1 S: J- A* h5 F0 ~end6 o5 r" F6 H; O: H
to do-plots
$ F) p A" M" p# Z0 K set-current-plot "Totals"
5 Z+ A1 s' N7 _0 U+ e7 S3 p set-current-plot-pen "turtles"
: i5 J0 b( I) e' X9 G# e plot count turtles/ S3 F% M5 S. N' a m" J
set-current-plot-pen "grass"5 t5 v2 Z& D) C9 w% h% M
plot count patches with [pcolor = green]5 u% I Y" ~$ C" ?+ a, Z8 r( Q
end# A" ]+ q+ N* M. C
可是运行时提示no such plot: "Totals"9 x0 ?: K! x# W5 m6 M" t' g0 Z
error while observer running SET-CURRENT-PLOT
& |5 R p: X$ E5 `; H# |6 j called by procedure DO-PLOTS
$ Y5 P* r. C M) A5 Q called by procedure SETUP
; X( N* @3 F9 i! ^2 L0 G called by 按钮 'setup'
" c" {/ L H9 Q求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
