我编的程序如下turtles-own [energy]
2 r8 ~$ A/ Z; k4 K# A6 V& @to setup% ?( `. h: K/ ]5 M+ M
clear-all* \8 O3 i( [2 Y# c) i* ^9 o
setup-patches1 o7 k$ ^3 |0 r" l
create-turtles 100 Z4 P C( u3 u" [. h: u- ?- `
do-plots
* P, C' u! C) X) }+ } ask turtles [ setxy random-xcor random-ycor ]8 M& F- z& \3 s( g8 u
end
7 J6 \( E8 i5 n8 x# Xto go
. |2 f- `% w, R% g6 A& y H/ ? move-turtles
) t4 m1 [- x6 M* `; d' Q eat-grass& o3 V1 Q1 A* E
reproduce+ ^" U2 A, s( a3 z. ?
check-death- t$ F7 B4 ~' h- [+ Y
regrow-grass' w8 [* o. j1 C7 ?: n7 u% ~: B
do-plots4 \1 \2 k! f& b* v5 A0 Q% s; B8 ~
end' L6 S* C/ u6 U3 H3 D3 {
to move-turtles
$ l9 b6 P/ h, F: P" D; c ask turtles [$ o7 X8 V& X# p9 R& C
right random 360
9 ?) ~7 H3 }" \6 v! \; [ forward 1 C0 w' o" _2 y: X
set energy energy - 1
! a% d- \2 n3 H/ h. R% ]2 g& R ]* r, d& }" z/ V& }2 r
end# Q* ` Y2 }- e3 B5 H
to setup-patches+ d) \: F* ~* m4 W: r8 Y# T6 F4 Y
ask patches [ set pcolor green ]( `, \# N- k$ G. w
end
7 y6 @, F, a r- v; V1 J% x, @to setup-turtles2 R: G/ D9 a! \
create-turtles 100
8 s! X6 [5 ?; y+ Z% } ask turtles [ setxy random-xcor random-ycor ]
, t+ `0 d8 i u7 M" M; F& R; I# H8 hend
, V0 W3 X- O8 T) Nto eat-grass8 K; u4 ?8 U9 k9 |8 n0 d
ask turtles [
$ y L) N+ E. u) e, Y( p8 g if pcolor = green [
9 @, U# U" p# d( z& ^* s set pcolor black0 x9 X( c. l9 [7 ]- m
set energy (energy + 10)0 q! L) }' d3 N. C, M+ V
]
" J. z6 b( s9 C8 A% l ifelse show-energy?
' \+ q, s" k/ z [ set label energy ]
& X! n) u; h4 Q% ^ [ set label "" ]+ \! I1 Z1 ]2 Y2 g, Z2 P
] o8 [: U6 M, a( \# X- y" K, A/ ^/ N
end
% Z1 J- H8 x- a" W, L& h6 p3 Q) sto reproduce
4 p; S& o; i2 e3 t ask turtles [
3 e8 w- k3 v) t& l" h* ^* y if energy > 50 [
6 R2 X* ]; l. j6 c3 B set energy energy - 50
8 ~/ t1 k5 [2 R* e hatch 1 [ set energy 50 ]4 O4 y/ m- h1 w4 p+ I7 I
]
# S, t7 f5 c! k% K9 w2 H: B ]
4 j) M c2 L( _- Send- R+ v4 `4 \; K+ j3 Z3 ^; _
to check-death
8 P0 A2 v- L J ask turtles [9 w/ i' [$ x" N% p( ^% a! d. d
if energy <= 0 [ die ]
9 Q; u9 C ~8 S7 Z0 Y! s4 |. B" U ]
- ?4 u# e3 [! ^: U9 yend
; V f' i3 E: \7 I) l( Rto regrow-grass
& _0 m8 E! u' X4 q! X ask patches [& c0 X) U: E$ ]# i% p+ `) R
if random 100 < 3 [ set pcolor green ]: u3 i+ F0 }! ?- |# R
]2 P3 l+ s+ M p! ^5 d% y
end8 m6 h: R& P1 M K2 X5 ^8 G) `9 q6 F
to do-plots
) p6 e" v8 c9 ]6 a9 e1 P set-current-plot "Totals"1 E4 S) l! W& g }: x% H: V2 Y0 Q# s
set-current-plot-pen "turtles"
2 M' m/ t, |0 t. u- {( \ plot count turtles. r5 e- | F7 p6 R& G2 Y# b0 H1 T1 l
set-current-plot-pen "grass"
! K( \* b1 v+ ?, `$ C* I' ^ plot count patches with [pcolor = green]
. {1 v u8 _2 T Uend
8 U1 o5 L9 X9 J$ Y可是运行时提示no such plot: "Totals"
# ~' K; v- @6 A4 a8 m$ i6 B# w) Kerror while observer running SET-CURRENT-PLOT$ B- Z) e) l( X6 Q# Y2 d- y* u6 v
called by procedure DO-PLOTS
2 R7 _' [) ?. Y( ] called by procedure SETUP; ^9 [$ |8 i( I" t% r
called by 按钮 'setup'
; [& U8 t4 v1 b2 e! b求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
