我编的程序如下turtles-own [energy]9 Q+ g# [. }* ]& A* T; f
to setup/ G: } z+ _, V2 \, U0 F
clear-all8 C) @& K/ t7 F/ r: w
setup-patches1 m, h& H5 j& H% I
create-turtles 100: c* q* C. K+ u2 p- V! X
do-plots
u: H( Y. ^- m" {( J ask turtles [ setxy random-xcor random-ycor ]% s" B. y9 v9 A& Y$ D9 Z
end) I* L! ~, u& c* r$ [+ f
to go0 ^& `. B9 ^: D* K' G
move-turtles
( \% G! m+ y0 j1 o* z0 } eat-grass" ] v: E6 _) X+ Q/ T3 K
reproduce3 z5 B4 Z) C) p3 I- }9 w
check-death: b, J% R2 [3 S' T) o
regrow-grass! n2 W) }( a2 t4 l8 V3 w
do-plots# P" ~( n6 j5 v0 w
end
! z9 o; s; n) R L1 hto move-turtles: V* b$ v1 [7 n1 s3 t% U% x
ask turtles [
?2 C x9 |- ]" Z" @* K right random 360: `) O+ u4 R" K* L! b0 b) V: y
forward 1
" G9 @2 m2 S0 z; D3 D$ E0 t set energy energy - 1
8 q, q8 c R) w4 \- [6 v, [+ } ]
2 z# {% l% d5 X. t- V+ c' wend
" l' j" P8 I5 C2 f; H, `# u7 Tto setup-patches
/ B! E0 c0 e) ] ask patches [ set pcolor green ]1 X3 |* L; H7 |: i
end/ y/ f% u2 {4 x& _( I& Z7 [' p% X! J
to setup-turtles
5 ^$ P- v4 Q# ^- X, c( M8 P create-turtles 100
! v( X8 r' d! r% n ask turtles [ setxy random-xcor random-ycor ] ~ g' K2 O# u6 o8 I6 r: k4 i& D
end J7 O0 V1 g2 Y
to eat-grass! V& {/ o) I0 l- d6 l, N
ask turtles [
$ z3 v9 V1 w- h* i- p. j- u3 c if pcolor = green [
4 L+ o8 }. {4 [* l' o9 H% q set pcolor black
4 D# `& V$ l$ y% A set energy (energy + 10)$ x7 T1 ^5 C6 _ l) ~
]# t0 K" e& N2 D
ifelse show-energy?' w9 r" ^, D8 x. X% V( i5 u0 v3 ]
[ set label energy ]& Q4 I/ F" ~2 ], U8 }! S$ K
[ set label "" ]
$ ^6 I* s! s$ P8 E @2 S# ^; Q ]
* I/ x/ D7 D& z3 S0 m. h, b* rend5 s# N7 G4 M* u8 v. w0 O
to reproduce2 z- P/ ?( ]2 y( Z5 q' m
ask turtles [% u9 k* R; v5 d4 o4 ~0 F/ L, s
if energy > 50 [
5 C4 \6 p5 `5 M9 T8 X set energy energy - 50
5 }: W; h4 u/ } hatch 1 [ set energy 50 ] z; x; u6 c" }! N% N+ M
]/ b2 H5 G$ E/ C/ s! B
]
{2 t$ H7 l: wend" T5 z5 z% P9 s* v& ]+ U% j! i
to check-death' G. G( D, |, h4 P" ~& h
ask turtles [
6 n" p$ i# R; O8 P" l if energy <= 0 [ die ]
4 s3 [! p* ]0 Y) p& j! F/ A ]
& H0 ?2 Z/ {9 Z, g8 U1 Q5 Hend) e" Y* } C1 u" G8 \# l
to regrow-grass; F# d1 O0 x1 C3 D8 Z3 _
ask patches [4 Y. F, w `$ F
if random 100 < 3 [ set pcolor green ]0 v h8 O3 L3 u& q% G: M
]
% W% |. r/ E' I4 Wend7 A$ u6 f) b0 B) ^5 T$ g; ?' f
to do-plots) s2 m: k9 y5 d: a3 h- k( n
set-current-plot "Totals"# ~' [5 y6 f' ?5 w1 G b% t( {6 u3 }
set-current-plot-pen "turtles". K- b, G/ B6 n9 t7 M }- k
plot count turtles/ g/ W8 |" V7 o1 J) Z. [+ P8 G% h
set-current-plot-pen "grass"
0 D* y! O+ I9 P/ ?# e plot count patches with [pcolor = green]" ]. {! N% D8 g, r& S
end
. H' [" r% r' o8 `0 [6 A! Z可是运行时提示no such plot: "Totals"
$ a: ?# g0 b0 O. Verror while observer running SET-CURRENT-PLOT
# y; G; u1 n; c+ X8 W/ p called by procedure DO-PLOTS
+ p/ Z( T1 k3 M6 t" D" i: n/ g) { called by procedure SETUP/ r4 f8 L( c& i. t/ ?& {4 ?
called by 按钮 'setup'2 S+ e8 L% W1 l3 |, ^" i, ]) x
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
