我编的程序如下turtles-own [energy]
P$ i) u2 m& q3 B, f$ Q: tto setup
# H% m' v8 q" y2 e" C+ X4 Q clear-all
/ i9 }# `( O! h. w% F- X! }% G setup-patches' i! ~! r- Z% l1 T& j/ @) @3 L ~
create-turtles 100" a8 [- V1 |. X
do-plots
% K7 V$ H! G$ |! m# f1 a& C ask turtles [ setxy random-xcor random-ycor ]
* {8 K" G1 O" oend
8 k$ g, G# N. i7 n* xto go. \4 K" K$ z# H/ g! K
move-turtles: z2 I4 X; d3 A$ m; i
eat-grass
6 M; I# y# M8 ?. J reproduce
. j" b. p3 C; b2 N7 | check-death
/ N T7 f7 n1 b f4 o regrow-grass8 _% @& n. W0 |+ O0 Q; n" w
do-plots
- e8 L M0 }$ cend; z* |7 @6 Q1 s- i! O" Z' ?. q
to move-turtles8 q4 k, C" M/ y& I4 t! h
ask turtles [- z4 i' I8 e, C+ C2 L( c
right random 3607 B0 }( I4 \" n4 t! d: i
forward 1! ]+ p; N: ~5 v" r" w
set energy energy - 1
: L9 Z l3 p0 V0 s. O ]. m3 d9 P6 A. T- S2 _: c
end* W9 T5 j' D/ w, T$ @( _
to setup-patches8 R: h" J l! x+ }2 t
ask patches [ set pcolor green ]
' |% s% V8 A$ e- | X3 rend
S7 q4 o* I+ ?0 q) l$ @" Bto setup-turtles; [) ~' z! H1 k, e/ N7 m
create-turtles 100# P: ?6 R* Z2 s; B. h5 B
ask turtles [ setxy random-xcor random-ycor ]
! B. b9 w" h# ?4 V' {% G: m n8 j5 send
. y2 r( @ a) B+ r# \3 L- pto eat-grass
* u/ p! g3 A& t$ G8 \- E ask turtles [
- S( g V0 q* I: C0 t; i if pcolor = green [" h: q6 B7 Y+ W3 J) e/ O$ i6 E
set pcolor black
5 y( r& c8 l- ]2 E set energy (energy + 10): ~) T; ~9 U! o! t/ g$ s
]- W- B2 z" y' W. d3 O5 @0 U7 f
ifelse show-energy?
( R4 o) l& q9 H+ O' ? [ set label energy ]9 d% |( s9 s2 @% Y- [: P
[ set label "" ]; f& b/ I7 J8 o3 G
]) m8 m# |0 U7 Z
end
- z `% h6 b; G& L! E$ oto reproduce- G6 x8 x8 O. q/ A! R) j1 r
ask turtles [, S8 z! M" `( P4 M
if energy > 50 [# t- U( ^: G, H/ W
set energy energy - 50
. ?1 V* h- ~* g. ^. ], J9 }5 B. Y hatch 1 [ set energy 50 ]
- k6 v& r+ h! a c) O1 ~3 B ]6 E m& e4 P- E5 t4 [7 B4 c
]" E; l/ P. _) c* }* ^; t! t" B
end
2 u$ p$ F: [' g4 a) F: p6 ~2 Tto check-death
5 |- |7 i5 U$ r ask turtles [
) G! ~' Z7 B8 ?4 A Y if energy <= 0 [ die ]1 y8 | y0 J; M o/ W
]
& f8 A" [6 R6 }) A. @) _$ k( H# Rend
* G' K1 B o+ f. C: O. `! o: Ito regrow-grass
% O% v- r4 o1 `" D ask patches [
! H- R t L t6 Y2 I* j$ c if random 100 < 3 [ set pcolor green ]. {$ C8 y" }! ~) ]( p: C {+ V) t5 N
]* M6 }1 ~ L' s# e! Z
end: m3 q) H/ H0 h8 Z6 a9 d0 t
to do-plots
, a0 n) @) M* g9 _* N set-current-plot "Totals"
: G7 u, n! g W% a set-current-plot-pen "turtles"' `7 I" h, `6 c8 j5 [9 [* P( Q2 X
plot count turtles; @' y7 z/ }( @8 L
set-current-plot-pen "grass"7 I- N# y- _$ J# [$ }: V
plot count patches with [pcolor = green] G7 J" a# m& x, F) Y/ {4 i
end
. A9 v! r( d. Y% t5 q. G8 N# w' Y/ H可是运行时提示no such plot: "Totals"
; D5 {4 d4 E7 d" o% ]" Berror while observer running SET-CURRENT-PLOT B2 M( n1 ]: y$ X4 Y
called by procedure DO-PLOTS, |7 X L3 L* m E" ?1 V6 F
called by procedure SETUP
7 K& U7 M! A' ^6 x) Y called by 按钮 'setup'% b4 ]$ {9 x, n9 u& j
求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
