我编的程序如下turtles-own [energy] ]7 @8 B7 _. b) B- I p% ~" i
to setup
# W8 a1 @8 n& T9 a2 s0 ? clear-all
! h& w; u4 g) i! m) P9 a setup-patches8 `/ ]7 G% P6 f4 |7 O( h
create-turtles 100" [" j! b9 C, H; q( {, @8 O: A- z
do-plots
% V: G+ [* r, L. z& r4 \ ask turtles [ setxy random-xcor random-ycor ], G" ^4 A0 n4 F% L8 ?
end
4 K( G" y2 R+ O! _& H, S' T5 Nto go8 x b; _' A2 N: X0 Q
move-turtles
6 K5 Y7 L8 @8 x# j6 Q0 ?& X4 K eat-grass, e& d2 _1 U7 u) L8 r4 t8 V* X
reproduce
" q5 V* \9 C% I% _/ g check-death
7 b/ v& @# `7 m( \ regrow-grass
7 L+ t0 d* e# ~) p( j) L do-plots
# C! Y X4 Y* w7 A9 Z. B: zend; t# A* W( W* o, W( H7 o; f2 @
to move-turtles: C7 k# d8 }0 Y" K' ~5 |
ask turtles [# \) t. J3 K4 F0 L/ W$ L
right random 360; D+ }* N2 c3 ^# M2 c
forward 1! h2 p: J# Y6 }
set energy energy - 15 _' O) y8 h+ Q( x
] C% \9 `) ~2 e; g! ^% V) `$ {: _
end P. d3 o( Z+ `$ D* h$ i7 ~& U
to setup-patches
, y, y: g; f& l6 Z+ c6 X ask patches [ set pcolor green ]# W: z, T9 R9 `+ I
end
! g2 u* z! b/ A' H7 uto setup-turtles
- X6 h$ R6 h1 r( T) A- m5 G' x. L8 S create-turtles 100; g! \) D4 s* T. ~+ T. w9 K
ask turtles [ setxy random-xcor random-ycor ]$ j, @0 y8 N4 T! q0 x7 f3 Y, D; _
end4 O* D- v5 e- m, D+ o
to eat-grass
5 y" W8 w2 A7 b$ }4 N ask turtles [
$ @& k9 Y4 f" k if pcolor = green [
) ]3 z8 ^' H) j: w set pcolor black
. s* X) X8 F& S- h2 d set energy (energy + 10)1 J0 V+ m" h; ]
]
1 {/ C% e8 j+ B8 g& a ifelse show-energy?
5 E9 j! z) X# f4 k* X8 y: y$ J [ set label energy ]9 d; h$ A8 U Z2 M5 t$ L
[ set label "" ]1 G/ b, Q) p3 C# K: l
]
' T/ B: K; D) W! X3 ? I. Y( s1 iend
2 i4 p2 U! c' K# J, l( mto reproduce
8 @: X# U/ X; O7 X7 Y! o ask turtles [
U+ M' P, {+ V( j: b if energy > 50 [/ ^ N) ^/ J# ~ \
set energy energy - 50# f" k( D6 K# h' o" p% ?
hatch 1 [ set energy 50 ]0 ?; T( h. n. o
]9 _0 |. Z5 i6 e) |% R7 J% u$ x
]
! P: O' o. c5 I- k4 nend
# C. h% N( x7 x3 ~+ W, lto check-death
g1 f( z- T6 s7 t6 t5 D) W ask turtles [$ f4 ]$ F+ m8 v" o1 l# f1 F. e5 ]
if energy <= 0 [ die ]/ Q4 v- i# [6 N
]
/ t4 B- ]2 r$ Gend
; f* @4 P! Y3 T- ?to regrow-grass
2 z4 ?) t( k9 Z9 _$ I ask patches [
0 q' F8 q& c& ^) ~& e& a# N if random 100 < 3 [ set pcolor green ]
' {& \3 h$ z$ Q. X: z: B ]% s2 R5 q7 S, F! f; U* R& M, _' g
end
9 S& V7 }/ ^% |$ Z6 X# kto do-plots- f2 z0 ]: ]: a
set-current-plot "Totals"0 q2 O5 [: f- z! c4 K& A. {+ [
set-current-plot-pen "turtles"0 Y, m& m0 y8 w1 s# R# v
plot count turtles* |" v0 w2 B% l$ X
set-current-plot-pen "grass"4 ], c; s8 d2 z8 }! x& x' h
plot count patches with [pcolor = green]6 b" Z$ N9 ~. j- s( h. c
end
" s1 S6 Z2 {0 S2 b, x可是运行时提示no such plot: "Totals"9 K" N+ ?. Z4 u& U' m& |
error while observer running SET-CURRENT-PLOT
7 K" b% Y* R h# V9 {* d called by procedure DO-PLOTS9 V. [$ y1 n& n' A" l& Z) ~
called by procedure SETUP( I# w, V1 a' T$ C4 t
called by 按钮 'setup'% p( P4 z2 O z) j1 d" x" w0 f3 H
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
