我编的程序如下turtles-own [energy]
# a( T+ t$ B) ]to setup3 L) t5 `9 }) |( s. [; q
clear-all
5 B) `0 V5 i9 o9 Z4 _ setup-patches! A0 G, \8 @& h7 t
create-turtles 100# n5 r- h1 u: ^
do-plots) m( R& R/ w4 @, Z8 s5 N. I6 c
ask turtles [ setxy random-xcor random-ycor ]
4 Y, G9 T. v9 @, _, n/ `8 {end; U- c; e" \* A+ g7 }9 _
to go
! M m4 n. c2 J, W7 y( h$ F* Y% ~ move-turtles& G- h/ L% R4 o# G
eat-grass: P z0 [7 P E D! \
reproduce1 Y7 e7 K% ^8 ^# u$ h/ F1 k+ a9 ]1 h
check-death
% g+ [" k. }, C$ S5 ] regrow-grass, M& R- ^7 E8 @% t2 h Y! T- {7 }) H
do-plots
* g- F5 f# Q" ^4 |end- ?7 @7 B% ]% W8 M/ p! J/ b) k
to move-turtles
0 m& J ?7 Z# a6 L& m6 f$ F r. ] ask turtles [
8 w& I$ H5 [/ L. J right random 360
7 v+ M9 V, B2 W6 t forward 1
7 l3 w5 P, p9 X8 k set energy energy - 1: g- g7 ^9 T+ K$ g9 t
]
3 e) W; M4 Q! y4 O8 Q9 {7 b* oend/ Z4 B6 a `0 c* n4 t ~ f5 i
to setup-patches
9 R. A6 @; y) m: \1 y ask patches [ set pcolor green ]
. m8 p0 t; p( h9 f: o5 eend* o8 R) R, |7 w& f# J2 o
to setup-turtles
) E/ ~! p6 e( a6 @+ X& c7 O; V create-turtles 100" ]/ K& _" q1 Y1 q# `& P) f& s
ask turtles [ setxy random-xcor random-ycor ]
1 J$ M) p( e) Oend* u, m& c8 `6 N5 y H# e. [. V' m
to eat-grass
1 b7 C1 l$ i, D5 ^9 [4 x+ m# L) ~ ` ask turtles [ p& h% S7 T. |0 l* L
if pcolor = green [) z. F4 B) _4 Q+ Y l
set pcolor black
; n9 m1 k" p, g' e7 L set energy (energy + 10)4 H3 e- C' l% D7 k& V; Z
]! z) q' F# l8 O% g! P8 c
ifelse show-energy?+ V) o# g4 H$ X0 i- q- Q
[ set label energy ]
: H" ^0 k# w2 e" a [ set label "" ]
" b7 G2 X0 n: S. h ]
- {. F5 {' A' }3 o9 @9 fend4 @6 b7 g! a) ]# l
to reproduce5 i9 o! N, z* G: ^
ask turtles [
1 u. c. z# V. |+ e* a& G if energy > 50 [
; |2 v) h% t* a! z7 ~4 f set energy energy - 50 m8 v6 k0 y( L
hatch 1 [ set energy 50 ]
9 I% j0 ?8 q+ A: r* [ ]. k/ A/ u! I5 k: k
]
1 Y+ p( s6 [* {1 R) ]& E Zend
8 C& Y# W( ^( p, ~to check-death
$ T, G2 ~' h/ n( Z0 A3 t0 Q7 S g ask turtles [
2 ^% e6 R* ~% V' ]. A9 V$ u if energy <= 0 [ die ]
2 p; y0 |- c3 `5 C ]" V7 Z) L' V" b# d7 o
end/ u- x; }% k5 l. C+ W
to regrow-grass
8 M! x) _3 y8 O9 b' q& x0 K ask patches [* r2 q3 @; m# \! @4 ]; W
if random 100 < 3 [ set pcolor green ]
- @7 [1 j0 `2 h' G6 A- X" x ]' T/ c$ S/ S. \5 \* Q d* n
end) _! c( M/ I$ S! w' {: U0 M( y
to do-plots; K; C2 t+ C+ g# U( e
set-current-plot "Totals"
6 u0 R; j1 K! `, Y! @& S7 [ set-current-plot-pen "turtles"" t! l a9 h) L! J7 q
plot count turtles
4 v1 B, Q$ A0 _) { set-current-plot-pen "grass"% a6 D& x' q; t* ?( q$ ~" q
plot count patches with [pcolor = green]
6 p5 |) p+ z. m5 F3 I+ { ~( ?6 Mend
8 T6 _5 e) d2 B, E+ { s- c' Y可是运行时提示no such plot: "Totals"1 k. s- F ^) O+ s$ G0 O
error while observer running SET-CURRENT-PLOT8 \5 [6 Z5 \- n; B0 X% f
called by procedure DO-PLOTS
. p ~/ [, j3 r3 {: |# { called by procedure SETUP2 l4 Z9 n6 Q) X) r T5 T1 g# y
called by 按钮 'setup'
, Q w/ }6 d2 T! B$ v2 @, v) z求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
