我编的程序如下turtles-own [energy]
9 |1 c2 N4 y, Q0 gto setup- x5 O( T" s# }$ m
clear-all# L* Z/ @6 }% |! i: C) F" `9 f! }% K
setup-patches- z( y( w2 `0 F. G& l( b
create-turtles 100
* J: |/ w! K5 q d/ z5 h+ n do-plots/ T0 r1 a4 M2 \: I) s
ask turtles [ setxy random-xcor random-ycor ]2 F; U2 S" f6 p+ A0 b
end
) q* j# S$ |, O% s; gto go
5 C. O7 m$ m# P, F- T* x# N \6 R move-turtles+ m5 C; p# W' K
eat-grass c8 z+ P/ S* C i' T$ v6 a
reproduce
4 N2 \. c% Y' f3 ]( j7 i check-death, U; I' d3 i& a1 E& P
regrow-grass
8 ^ u0 |" g) E$ v) T! _. r do-plots% O9 q0 {5 t4 H" d2 _
end
6 D6 D, s! v2 K8 R* ~5 Y) yto move-turtles+ L4 |4 g- v1 z
ask turtles [5 \/ ~0 F6 a" Y: v' a) s) s% D5 G
right random 360
, l% n$ f2 K4 E) c forward 1/ c- L z; s+ P5 y3 _* ~1 Z( T% _0 X
set energy energy - 1% j9 g3 z/ W- g9 d, R3 c; c' q
], t+ R/ P- P m. I
end, M2 P. d2 J+ |4 T+ w0 U
to setup-patches, `9 j, x/ Y, ` C3 s) q7 J, X; K; `
ask patches [ set pcolor green ]
G5 w2 a& z2 lend
0 p( w, |4 D( _( h; l. qto setup-turtles
8 K+ j9 |6 a5 C; h create-turtles 100
- x) m) u* S' J/ v% u' ] ask turtles [ setxy random-xcor random-ycor ]
, J- p# _: \4 I9 kend
( u; z$ I8 n9 i! l! Mto eat-grass/ t. k- M' e1 C; C6 g* I
ask turtles [
: j9 w5 Z v# [2 ]* S4 `5 p if pcolor = green [
9 R- N& ?) v" N% n set pcolor black0 Y9 G B# i1 q$ O- T! b1 u% r
set energy (energy + 10)
! `" s9 i- {& k2 m4 E4 C. p% W ] ]' a- B3 `; ?) a. Z1 Q$ @, [
ifelse show-energy?
! z% W5 a$ m4 @* O9 R' g& G9 V6 r [ set label energy ]
& }" N7 u7 q' X. w# M8 x5 J [ set label "" ]; Y1 E: X. R; l, `
]9 ^2 a* B a# g8 |( R
end
5 K v. C9 B5 C7 Lto reproduce
' p- K; \# b- P+ }) X. _/ M ask turtles [$ F% W& \( M" ]3 ?
if energy > 50 [ p6 ]) V% I0 x) a
set energy energy - 50
% i, W% m0 J1 B4 l& Z. |; [) |. j hatch 1 [ set energy 50 ]
* {$ M, q& ~4 g# v" ^ ]9 o! a% w! S/ }; c
]9 B% u+ E3 f5 c
end
, |& A- {+ E: [3 w# W* W `' gto check-death
4 |* [' c" E v% t" k* e ask turtles [
9 g: A+ M k( |: `+ B if energy <= 0 [ die ], r( h. }& F2 F+ Q1 N
]0 {$ f# N A' a* y% a
end
. n) g" r H* t& M7 Xto regrow-grass
; }* k2 t9 ~9 ]9 m _# n, @7 S ask patches [
4 l, I' U9 b, H3 Q if random 100 < 3 [ set pcolor green ]1 {- S# y# U9 @
]
/ R5 {$ a( w* a& O' o# Vend2 q) F) |* d7 F
to do-plots( L, k/ m6 T& C2 g- d
set-current-plot "Totals"
' x( k, w' c# H, q6 E3 d! u" a set-current-plot-pen "turtles"
3 y( D6 M" i( s! L plot count turtles
9 @: y6 e l W7 m ?* u2 j( W set-current-plot-pen "grass"' i# o: B- T7 J8 n- l) D
plot count patches with [pcolor = green]6 \4 K; i. m% D% x
end) E8 }8 e' C- k: P
可是运行时提示no such plot: "Totals"
; g {+ ~& G/ U7 Q; Y( C# _( Herror while observer running SET-CURRENT-PLOT
" S, `+ W# K/ m/ v called by procedure DO-PLOTS
0 B2 v+ x1 z7 f7 l; S2 p: |6 ` called by procedure SETUP) l! h" T3 [1 L5 s) [, u8 `
called by 按钮 'setup'1 a. B# Q; h& T3 o" {
求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
