我编的程序如下turtles-own [energy]
+ }; R e. y. m1 I3 `to setup1 y) K6 G1 w" u! K3 O+ n) d
clear-all8 G! m q$ f# Q! Q, T* C1 t
setup-patches' g5 z$ _/ f3 [0 G. |, L @) b
create-turtles 100
9 G. {6 i: u# { t9 D7 y9 b do-plots' y) x9 m# q; u( Q1 N7 {
ask turtles [ setxy random-xcor random-ycor ] ` a0 p1 n1 A; w' P7 H
end
3 H/ F1 M2 [. H9 x' C; Qto go9 p2 l+ y6 T- i* g" ~" }' Q& G
move-turtles, F7 E4 X5 N3 c! ^ n& h
eat-grass
9 B5 q& i5 o' v! a reproduce' P( U, `$ \9 V" l1 s; h
check-death
7 N& j4 p) P; P5 S regrow-grass
" E0 h# p# O- E1 a% `, b, n' I, X do-plots
L) E! W+ ]. M* i6 ^end( M# G' Q' E% t X, ]7 u! D0 ^
to move-turtles) i' x0 `% K9 i
ask turtles [. N: M0 }( D9 I' O, } U, C2 a
right random 3607 X* @& b; @3 }5 ~8 x
forward 1
- B+ V% }) k. ^) z* L7 A set energy energy - 12 G9 G6 y; h1 D* e! [/ G, ~' R" f
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end* Q- S1 B& h0 ]7 E/ X+ r
to setup-patches: F3 e6 M a6 H( z0 X5 A0 U
ask patches [ set pcolor green ]
$ \1 [. a! N+ Iend5 m7 L3 X! ^' u2 C( `. M
to setup-turtles# @+ Z- b% T5 S8 x* N- S y5 I' T: `
create-turtles 100* g) A2 }3 u9 T' l, [$ p$ s, {
ask turtles [ setxy random-xcor random-ycor ]
/ c( T# [ s) K- U! gend' P' p! |* ]1 H" X- ?: w
to eat-grass
4 e$ B2 I+ a) |1 P ask turtles [; t6 ~% M" f: A4 I+ i" v z4 W, J7 d
if pcolor = green [/ K# G+ C' x" R3 }
set pcolor black% Y+ r! S# d. J. ?. r, P
set energy (energy + 10)
3 P/ y* n0 b8 ]! O3 K ]
) X1 ^. p* W3 V0 u. F! y3 O" Y* ? ifelse show-energy?
* T6 S: _9 w2 {$ ?/ f% ~2 n+ i [ set label energy ]- o* d9 i9 e; k w. c3 j6 o3 l
[ set label "" ]
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end3 o l% U& j3 g. B
to reproduce
$ F' @! Z/ f6 b; y( G; ] ask turtles [
8 W* C* C* R3 K6 I& c3 C if energy > 50 [
1 ~+ C$ w- s1 \3 Q& M set energy energy - 50/ S) |& ]/ S# n3 L- }( E" t
hatch 1 [ set energy 50 ]
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end
( [' ?7 y% q4 |" A$ t( wto check-death/ f" f0 l: f+ u% g1 B
ask turtles [
, ~, Q- h' y, k9 d e. a2 j6 G if energy <= 0 [ die ]9 A* e U6 @6 y# r: B4 t. G
]* p. i0 E% `$ H2 O, K4 ^: h
end
! a( L$ J1 G* i( w! {to regrow-grass, e6 B& w$ j g7 V
ask patches [2 _5 ^ a1 [$ i; u; a* G
if random 100 < 3 [ set pcolor green ]
( ^4 b9 v6 L% p% v, a H ]
; M- Q2 ^0 K' L/ Z0 J# `end
. y, C5 e* m# ]. Q+ a8 x- Oto do-plots
$ ^; X2 ]% ^0 e: Z& R1 ~2 J set-current-plot "Totals"
; ]6 X% v, M F set-current-plot-pen "turtles"7 ?9 t& j, O# B, x* i1 U
plot count turtles% A" |' s% w8 g' ?" e3 b) H
set-current-plot-pen "grass"
5 ?) ?9 b0 C- F3 W# r( n8 Z: F' w plot count patches with [pcolor = green]. _5 e- G. G& L R- _& u
end
$ _* P5 \, _ i h$ u" u可是运行时提示no such plot: "Totals"
) }# X/ K, \2 \7 y( a2 g8 ^error while observer running SET-CURRENT-PLOT* @9 B, O6 f% X7 I% c
called by procedure DO-PLOTS" ~0 G" C5 A f C
called by procedure SETUP
% l- h2 T$ e. Y1 U9 P called by 按钮 'setup'# D, d8 }( v/ `' Z
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
