我编的程序如下turtles-own [energy]2 q5 f$ k p- U; I6 R n+ q
to setup+ R' \* m+ p2 [2 @0 e/ C
clear-all
; c5 B5 f9 U; B: C- k' F4 P setup-patches- f( F8 A& S" L# L7 F9 C/ K
create-turtles 100" g. j! x0 r; ~! h" \$ i& q* b
do-plots# `, h+ r% R( \$ c, f0 N
ask turtles [ setxy random-xcor random-ycor ]
' v4 l: a V% L0 U5 G" t% a ]end; H- c% T! @ [2 [3 w V
to go
& E( @7 [3 u7 D, B: e2 R* U move-turtles6 F+ Y! [* }( ~: k
eat-grass
; k1 Q; |6 u, a) w$ W reproduce2 [1 W% F4 W; r3 V# w$ b
check-death: @) _) B4 ~8 T, e6 G8 e
regrow-grass
8 x: }& f$ |4 C# a4 @/ m do-plots
) N! X: b! F {. hend" c: {2 P) Y9 d/ q4 @
to move-turtles8 U' H. r# J& {
ask turtles [
4 z- V& Z! P3 {% ]( a% ~. X$ o right random 360% P- E% t. r$ H" ?
forward 1
& w j- C' t4 c' Y! N; c set energy energy - 1
1 C- A1 a L* }$ a7 U# {- r, J6 z ]0 D$ V6 J; U' L) L' D! x* f
end
7 J! Z, a" }! xto setup-patches
6 N$ x4 ~7 q3 N8 s- \5 g! M ask patches [ set pcolor green ]: [4 ~, L9 a* d2 {
end
/ N7 q2 X" h9 a+ b4 y3 Tto setup-turtles6 ^4 v l' G$ W t
create-turtles 100; N( d; t4 p% R7 O) d9 c$ i
ask turtles [ setxy random-xcor random-ycor ]
' s/ z: l% p3 z9 C% q1 o. ?end
. i k$ G Q- _) q5 r1 Uto eat-grass. n0 g7 x3 r; B. w
ask turtles [; C" C. X4 A" b' f& |( p2 l
if pcolor = green [
1 X# F' k0 V& S2 f' ^ [ set pcolor black
8 I4 q5 E9 h& O+ L* c set energy (energy + 10)
2 x" x' ^5 i( C ]
# ]7 Q3 w w1 M3 E. s' p9 ? T. w ifelse show-energy?3 |5 ?4 N/ y0 N' o: O* E5 z3 c
[ set label energy ]
9 f$ o8 D- F7 u! a" u+ \ a" C) n4 ^: u [ set label "" ]6 t/ ^5 p3 n+ l% W7 P9 b* v8 T
]
, F, K8 X1 s8 E8 A8 e4 W9 V" ~end. } `6 i7 u/ f# k7 c$ ^$ h
to reproduce
' c( Y* O- ]0 K* A; y ask turtles [5 R6 P2 [5 m7 U$ ^* X
if energy > 50 [8 G" W) x" s: K% c0 H; {# M* f
set energy energy - 50
0 e3 Z9 l: w4 ~ hatch 1 [ set energy 50 ]) D {9 z3 B% p: q$ u
]3 R& k. a5 ?& A% X S0 f8 w! d
]$ w6 }( O. [3 r, h# }% I ]7 n
end
1 q# n% O( G* M$ gto check-death1 X1 {% \1 C1 v; ]2 @2 L
ask turtles [
/ f/ c( W+ O1 [8 N7 n. z4 _ if energy <= 0 [ die ]% G3 i3 v7 Q' C( B8 w/ h! J
]
8 U! o2 W% \+ z' |end
8 [$ F- Y6 T$ F! C) ~# A2 X! W5 J+ Mto regrow-grass
4 B: n9 L7 f$ j8 S7 l9 C9 p% \0 X; H ask patches [
" b# U2 |4 }3 g/ I. { if random 100 < 3 [ set pcolor green ]
: s q, l2 T& l4 U# V ]
7 o( _" U5 l) t( y: Y3 g. Z c5 Q2 Oend" ?$ _& m# N# q' H/ v
to do-plots, x" f4 [- t V0 N7 M( |6 G
set-current-plot "Totals"/ P; T6 Z3 c3 Q0 R3 i7 x6 y# ~% p! K& T
set-current-plot-pen "turtles"
$ W6 @2 t& ~3 `( U9 n. } plot count turtles8 d6 O5 l. d$ U, U3 w& ~
set-current-plot-pen "grass"/ T7 y" J1 X* R8 d
plot count patches with [pcolor = green]; B! P( R7 l1 y1 x; b9 B3 @* Y
end
0 V6 q1 w- M) e1 ^1 [# @2 J可是运行时提示no such plot: "Totals"
; {1 i9 y, J2 t. `/ n O) d. Werror while observer running SET-CURRENT-PLOT2 @/ |. F7 u" v1 X4 r& C
called by procedure DO-PLOTS3 Q- x8 }' ?; n# S) f3 V
called by procedure SETUP; o% Y- X& C2 Z; d/ s% f2 C
called by 按钮 'setup'" ?4 n) s- [" l' b( Y1 z/ [4 D
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
