我编的程序如下turtles-own [energy], ^" m, ?) X& ?; F4 G9 B) b
to setup& i9 G$ |0 w# }' c0 c
clear-all% Y1 y# l! `( e6 _
setup-patches6 d0 A) n3 h0 `2 V3 E! h( A
create-turtles 100
9 q7 n$ d5 V) c9 z q7 H/ s& R I8 _+ E do-plots8 N# o- D# R8 T W3 a& K# A) {/ r' h9 A
ask turtles [ setxy random-xcor random-ycor ]' P/ I" x9 T. k0 T, W/ f6 Z# B2 `1 j
end+ ^, U- K+ A% i5 I7 [
to go
5 x, d1 Z9 ~3 B: {5 i; Y. @ move-turtles
' Z) J* ^7 B' n9 T' B eat-grass5 ]1 ]' E* `5 {
reproduce
+ T! r! H8 f* Y# x3 f: x' e% C0 S check-death
# i* V% m6 U, G9 _: Y3 u regrow-grass
1 m& t- E1 Y. V& p; x, q! P6 _ do-plots
5 @; f- x. i6 \9 k4 Zend! j6 @6 A" Q$ j3 {9 {
to move-turtles
2 j! q* k, w( x1 b' j% h2 ~ ask turtles [' Z1 Y6 T; y2 [( Z# y
right random 360
4 _! b! H7 X8 w% G- X1 t forward 1
% ?9 h$ _; S, Z5 S$ | set energy energy - 1
/ H, N0 g* q$ b7 A- g4 M5 { ]
( G/ S* A, ?$ eend
/ c8 l3 g$ L8 X: \5 s5 V( Y: k9 [; Kto setup-patches
7 o4 ]/ o1 s* x0 A9 n ask patches [ set pcolor green ]0 F% m' E) D9 u. c4 ^0 p2 T! M6 S% _
end* @7 ^0 w3 A* _: _- O
to setup-turtles8 K5 t2 a( C: s
create-turtles 100
2 w5 Q2 _8 D+ e5 n; N( N- i ask turtles [ setxy random-xcor random-ycor ]
0 \8 h) @6 s7 H3 S- zend
/ h9 C, G) P" [$ B: g9 M& cto eat-grass& m( A" d* }- k; t
ask turtles [4 d) s# c: ?/ {2 b/ B9 S
if pcolor = green [. L( l* l6 ?2 @, B, ]1 g
set pcolor black
: J/ g7 {5 Z3 H) @8 H set energy (energy + 10)& m; S9 w: `5 F; T1 C
], h. g7 Y+ c1 b+ y- M9 [2 y, L
ifelse show-energy?
) T2 W: C) n# q; [ [ set label energy ]
2 ^3 T9 I' K. }" c [ set label "" ]
: e$ [$ m0 q7 Q3 a ]
) G- T8 ?$ f3 g( d1 h: Bend
& ^9 ]$ `9 o+ B3 k d Ato reproduce
1 C3 V8 ^$ o. Q4 N- p( R ask turtles [' K7 H. Q/ l2 Z3 h& k$ _8 W
if energy > 50 [
$ c9 E4 w/ O1 T set energy energy - 501 @% S$ R! X/ h0 G `
hatch 1 [ set energy 50 ]
8 i, I* S0 S* @8 K6 K) r6 }# a ]
) i5 R( K1 O& U6 B+ D' v$ N8 r7 x ]
% }6 U7 Y, A' `4 o' d( K2 [end
5 _1 o" M2 @" J+ jto check-death o; U0 I* P& g" e$ H& Q! m7 {
ask turtles [# B0 T3 t: P1 ?0 w% x/ ?# C) _
if energy <= 0 [ die ]9 F9 W7 D( C* N) k G# M/ H
]. J7 Y3 b: S3 j
end
3 A" L+ N, n) a$ Ito regrow-grass/ Q' a( M5 }+ E J# ^# B
ask patches [) |) M7 x* E4 i/ d6 Y( \ u
if random 100 < 3 [ set pcolor green ]* E0 ]* J. g5 I* X1 c
]
7 o; S5 V& @# ?2 n# m% ]" @end i( T1 c# U' _ Z3 {
to do-plots
) M% u" i) I/ j$ a4 Y# ]/ z" D set-current-plot "Totals"
) p. V' _1 t {, ? set-current-plot-pen "turtles"5 M) `) S5 A/ w& t# k
plot count turtles! X! _- z) X* ?. V: z; Z# q
set-current-plot-pen "grass"
; E% B. ~( x; L- z Y# S plot count patches with [pcolor = green]. k+ J9 O h8 o( w$ H
end
, o1 G- S& I I可是运行时提示no such plot: "Totals" `' A3 P3 f8 k+ n* {
error while observer running SET-CURRENT-PLOT
) d z, m& j+ n8 [6 c+ S7 e B$ f called by procedure DO-PLOTS0 k) y; s( N% j. t T$ a
called by procedure SETUP0 H6 I* |1 p; t5 p3 L& _$ J2 j/ v
called by 按钮 'setup'
" \2 H# h4 X2 Z+ E求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
