我编的程序如下turtles-own [energy]; Q ^) u- M& a
to setup0 s8 U7 i! H7 A1 K
clear-all: M; ~. b" _$ R
setup-patches
! Q- C. x& C' w* E2 h create-turtles 100
, I. S* g( [' x* N. h do-plots
1 `. J0 {6 J3 t: x' _$ ^: v# \ Q ask turtles [ setxy random-xcor random-ycor ]8 G3 ~* w: I: J. B7 n2 y
end& K; h* G, P; |1 D
to go% g$ @+ ~- D/ A9 }8 ~5 v
move-turtles
* D1 A( E3 _/ f q! S, |- k4 U eat-grass# P! \ B/ W. f
reproduce. f0 H) g+ A) s1 d5 {0 n/ D' b
check-death T# P5 V. ^) b' c0 c3 E7 W3 r
regrow-grass! f5 h5 L! W! T
do-plots
0 r2 C% y6 Y/ E: [: W! Hend
) _9 e+ f- f$ |' }0 Gto move-turtles, d; g) t: A" X& ~- _- t1 S9 Q
ask turtles [) y9 b3 H2 x; i4 v7 W4 |& K
right random 3607 h; X, @: v$ E- e; K$ g
forward 1
% L2 Y6 ^5 k! _3 E4 T h: W set energy energy - 1" e- ?, ]7 r& r7 U6 R$ H) U0 G
]$ d! O4 D+ e4 u
end
+ d" w1 |" p/ f( i4 Pto setup-patches
& C# {) h3 L$ `7 V( m: e: I6 h ask patches [ set pcolor green ]
2 B$ e8 i! [1 Q$ _" [' iend& I! v9 T) Q6 |
to setup-turtles8 y$ f/ `9 v6 c
create-turtles 100
, W+ A. E; k% L6 k' ]. z% r ask turtles [ setxy random-xcor random-ycor ]+ G# E' A1 v7 q
end3 n0 C% C. ~/ s3 ?& u7 f p
to eat-grass
4 C9 W9 C s4 C- [+ I+ \ ask turtles [
. Y+ h: S7 L: g) L9 D$ m [* w if pcolor = green [7 z) s7 p; ^7 k; Y7 N, x! ?& L- q
set pcolor black# _6 y" O- a# ?* Y8 r. t
set energy (energy + 10). n8 }& g p2 q) M) _' z+ h: w
]5 g I5 V. t4 e& u" y7 k2 R; D' h
ifelse show-energy?
" j% C! o- k1 s4 g [ set label energy ]
, p1 x+ D f5 \5 x [ set label "" ]
1 u# a: ^* h& ]* x% \ i ]; R2 }. w9 P/ z) W7 e N6 \
end. K3 K4 I) ~; d0 x* d# C6 T0 V: {
to reproduce
; B, e: K/ P+ P$ f$ t; y6 ^ ask turtles [! z5 k9 v/ k8 A
if energy > 50 [" _& ^+ Z' B9 B; q1 p5 q
set energy energy - 50! \4 g4 H, D4 [
hatch 1 [ set energy 50 ]
2 ~8 C+ T) |+ u; {, z ]+ o% s( A' Q; `- A- x
]9 U, s K W, E8 K( z* I
end2 W* a/ V& u$ {* Q$ \& d9 R
to check-death
7 u/ D: h8 V9 F3 q% Q$ c6 N ask turtles [
% S& O4 e3 @4 X if energy <= 0 [ die ]
+ ?4 s7 ~8 J: I ]
1 h, M. U. n6 t# t% Dend
$ p. b9 v; F, y- N7 [to regrow-grass) K7 c3 L& G4 P. ?+ U( |3 i
ask patches [9 ?! F# _9 _4 U/ Q
if random 100 < 3 [ set pcolor green ]5 H3 W9 R: ~) Y
]
3 L; G1 D/ d j+ T) ?: ^4 mend5 p. ?/ t6 f/ b8 y& p, o7 @
to do-plots: |. l1 ^* r$ V" u2 f" L- _; H
set-current-plot "Totals"9 H( l# y0 i( a+ _- @9 h( N
set-current-plot-pen "turtles"5 F& ^0 M7 G, x2 S: Z! D
plot count turtles" Z3 q8 J/ B0 Y* P1 _# d+ n9 V
set-current-plot-pen "grass"
3 }( Y) G" B2 ^2 g. M plot count patches with [pcolor = green]
) k8 D, Z0 q8 V3 `7 Z$ n* Gend
' u9 b& Y$ F4 ^. {# A3 Y可是运行时提示no such plot: "Totals"/ E" @$ m( `; t
error while observer running SET-CURRENT-PLOT
) G) c# [. t- ]/ H called by procedure DO-PLOTS
8 x$ ^( H6 E: C2 V7 @ called by procedure SETUP
: m, f4 y3 L: O8 |( s! ~ called by 按钮 'setup'/ p: S3 C j9 L# h1 h
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
