我编的程序如下turtles-own [energy]
$ z- ^- [/ \. }) y8 t' `# Wto setup- b- y) a" S0 a; M: a
clear-all9 G/ U# H1 \& x: N2 U& h
setup-patches7 p. `! k7 J4 y: w- p
create-turtles 100# P) V; O5 D0 v, a' i. D8 F' Y
do-plots$ z% A; K) i2 S) b$ z- V3 q
ask turtles [ setxy random-xcor random-ycor ]- a6 y+ L6 }( u7 O9 z& C- _
end
1 e, s, L, ?' v& I6 ^; nto go
+ q- x2 R) A; L: ~) z/ J Q move-turtles8 W! a7 q2 _9 B |
eat-grass
5 L+ J3 B; H6 _; Z) O: {/ H; l& ~ reproduce
* D9 F; [4 M3 [2 f: r8 i9 c check-death) ^( {& |% i2 i. P, w
regrow-grass
- _# [5 I- F: P6 M& q# m do-plots8 q) K, o7 w" M4 f7 u _; p8 m: Q
end
" v4 w. @4 w- ^1 R9 u6 |, }- Hto move-turtles D7 U, ~0 D. A! Y- B8 ]& m% b2 I2 C
ask turtles [& E1 K. u5 r" }+ S# h. k1 o0 N
right random 3600 N. t8 `* T \' s+ K
forward 13 @, G- R0 s3 l3 F
set energy energy - 1! n( D9 ]) v0 v8 m/ H
]
9 c& }# M' \9 h6 j( T6 H( vend; F! {: C6 H7 g* w2 n
to setup-patches
. s M- N* k. r% ]+ Y( V; u6 f0 H ask patches [ set pcolor green ]3 S8 L) ~) E4 y/ {4 A
end
) ]- e: {. U) {) T6 g! g( T7 |9 Y; Wto setup-turtles3 U4 Y$ H: L9 Y; _! E3 T
create-turtles 1000 j, e. n' R' }6 v6 J
ask turtles [ setxy random-xcor random-ycor ]
6 |0 _/ B+ U8 ~* C) l, ~& l" _end
% L: F' H- }% r! X! Fto eat-grass
& i6 ]0 R6 w! U# q ask turtles [8 r* ]7 P$ u$ L3 T3 j
if pcolor = green [
* R; \* U$ k5 w7 W: C- J( u( \ set pcolor black* Z, x" w5 V3 ]
set energy (energy + 10)
* m& b9 ~% w. e5 a ]/ @3 G* x, q- ]1 E9 |
ifelse show-energy?
9 w% C4 w! ^3 T9 D; g: o2 b4 v [ set label energy ]
; e4 D( [( w3 V: J5 J9 s* Y [ set label "" ]4 W0 m& E9 m" @ [* s
]
9 h2 w% e1 A& M/ Iend; W& y/ W% S9 {0 R
to reproduce
; \$ |- z/ K$ g6 N ask turtles [, n( q: k: S3 ~( ^! S
if energy > 50 [
% Q) S) V! D& \" O$ c1 X& N set energy energy - 50
, I% b& Y2 f5 O& v# V: o# I hatch 1 [ set energy 50 ]* f+ C; [+ {4 S- A$ `
]
8 e5 q2 q0 ]& E6 V8 m8 F& u ]
8 ]0 f' W- {9 Q6 A' gend+ k' X8 A$ [, {3 x' e, N
to check-death
" q y2 Y- u& D( G ask turtles [( |, A0 {" y* F: m0 t/ v/ L
if energy <= 0 [ die ] o* s# `+ Y8 I# s5 Y% H) ?5 D, j
]1 u( y/ N, i- g+ U" C
end" `( r5 s' S; l8 S
to regrow-grass
4 Q5 S Y! a+ M* F' K: K* I ask patches [! Y$ N# b; ~/ g, X3 X$ y6 @$ e V$ M0 e
if random 100 < 3 [ set pcolor green ]3 n' [, G9 L4 s3 [4 h* f
]
" d. V1 h& U% w) o0 A) ~end, |/ L' m3 |9 W+ }
to do-plots2 N6 S; U- f& @" p$ T' R8 K
set-current-plot "Totals"6 o+ N( @% K0 Z
set-current-plot-pen "turtles"
9 P+ z3 L' I$ Y6 e) z b plot count turtles
% }8 L5 M/ E g5 q1 x set-current-plot-pen "grass") p" Q6 d( U; g( s8 x9 R6 X
plot count patches with [pcolor = green]/ h; J7 j2 {: o( l
end
% T, [8 |* [: m1 w0 c8 B J可是运行时提示no such plot: "Totals"
- L! f0 g# b3 J# N* b3 rerror while observer running SET-CURRENT-PLOT
0 j4 \$ R, I" w. W: m+ l1 `1 v called by procedure DO-PLOTS
0 ?; g' D) v9 r# M called by procedure SETUP( a6 d" o. a @" M7 R
called by 按钮 'setup'
P1 d1 b; c0 X求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
