我编的程序如下turtles-own [energy]1 }! K7 e2 I+ N, `8 I
to setup
) \* ~- I9 r+ f5 d; \/ A clear-all
! {, {: P7 J- C4 q+ z4 p setup-patches. q7 R3 u/ d+ j
create-turtles 100
9 Q/ I( F: z. G; S6 T8 @2 r4 d do-plots* x! }- `! J: N" d# f/ I5 P& w
ask turtles [ setxy random-xcor random-ycor ]
6 L1 Y" F4 G5 h' oend
+ C' b* g) a. O3 l$ l! u: @- _; i, kto go" j) v% m5 V8 r |5 q# A6 ?
move-turtles
+ Y, g) n& N, l6 A. ` eat-grass
" ?& }) C; b- [% E# @ reproduce
+ l/ i4 N* [) Z* ` check-death/ ~4 u4 @1 f |0 R- E; C( @* n
regrow-grass! `" e2 O+ T; l _
do-plots9 K3 l# S+ J8 Y: b u3 N# @
end/ E& `7 L8 s6 P) N! q
to move-turtles1 d6 }( R6 h9 X _! P h& |: y- k7 i
ask turtles [
, i7 L: l( l7 _) f0 h& v right random 360! y; {$ _5 S8 r9 u
forward 16 G3 g9 J& k+ f' k$ P$ K9 B+ \
set energy energy - 1
. \+ R/ x7 k- P/ x2 k ], X1 ]% p$ r! S% k1 B0 g, U
end' f( P' j; f& a) Z1 ]+ C2 f8 r* G
to setup-patches
; v9 h; J- Y4 H) D! Z6 l4 [ ask patches [ set pcolor green ]6 v2 d5 E+ z/ f* R; v, Z4 H+ A
end4 V3 k" G' ^1 c" J4 S
to setup-turtles
+ w# `5 c9 o% U7 u0 j e+ M create-turtles 100
9 U8 t _/ u$ e ask turtles [ setxy random-xcor random-ycor ]. \0 e. f k* w, z/ k
end2 t3 s" a, |3 F% a
to eat-grass q. E0 L5 r6 D- S. n3 ]
ask turtles [5 N# e& n _# n/ z$ t
if pcolor = green [
4 t- ]; C% u, H, X) {" Y set pcolor black8 Y" T, y! \5 z4 x
set energy (energy + 10)- j6 ?) B' J4 t: _/ X
]
' w$ F- i/ D8 P ifelse show-energy?, {" ]$ ]9 n2 K8 H+ g. ~
[ set label energy ]: ^/ u. ~. n6 U0 y7 R [* D
[ set label "" ]& p6 w, i: \% ]& e) |
]
0 X3 u) ~, B7 n: D5 n6 B; \end' l4 w5 l8 J) t- ^4 Y5 k4 j6 `, Q) A
to reproduce
0 @1 H3 P2 m8 c* s2 p+ M Z$ l3 a ask turtles [
3 L0 M) L) P9 m! O) ~ if energy > 50 [3 O. Y# `# o, T7 q5 R
set energy energy - 503 \* z2 }1 Z; }
hatch 1 [ set energy 50 ]! A; _) G# y c7 J
]
1 I& V r+ Z3 o# J ]
! R! R/ j$ n) ~ ]" M8 y# n8 Y! fend
1 n# p$ p- H" ^! d7 D. A. r% rto check-death+ i4 e' J+ ~ `
ask turtles [3 X% J3 `$ X w. @$ X
if energy <= 0 [ die ]% a. r* \1 [* @3 ?, T- k' W, Y
]
5 ^( v# U6 G! m- hend
: S6 q5 [' F b3 Yto regrow-grass& ^8 N7 _: O+ T6 C! N7 Y ~
ask patches [
" [# Y( o, J) x1 n& x if random 100 < 3 [ set pcolor green ], x W% c% m" e, H/ Z0 h p, C+ X
]; Z( w! a# S6 n9 G5 f
end
# s# N$ {3 u0 J- Q9 n# ^6 u+ z0 oto do-plots6 i- n. Y. O3 V& p: I5 l/ N7 L: ?) X1 K
set-current-plot "Totals"5 ~; J) Z3 e; g) _7 g
set-current-plot-pen "turtles"
# e7 q8 Q& E6 O6 L$ a4 d H& n# v plot count turtles3 j. [3 f& C- C5 _, b( B
set-current-plot-pen "grass"* D5 J$ M. ^8 `1 P0 b
plot count patches with [pcolor = green]
; V3 Z) `9 W# n, rend) _! M( ^# s& R! S9 r
可是运行时提示no such plot: "Totals", q: K( g' e; v& i9 v
error while observer running SET-CURRENT-PLOT! b3 Q5 m. B% F" d" P' w, r* K1 O
called by procedure DO-PLOTS
7 U$ O' r1 u7 a s$ W, O called by procedure SETUP
2 j k9 x5 N4 w0 G! v7 ] called by 按钮 'setup'
$ f( H, G% a! m. ]3 h% A求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
