我编的程序如下turtles-own [energy]9 y, U5 d' f, i3 X: Y+ S' A8 {
to setup2 ~/ t) X) C, a) j
clear-all
, E4 t6 C3 L- U" F, w& ?4 q setup-patches# J( F8 v3 N4 a6 }( U; R4 W* ?
create-turtles 100 |" O g% h: C$ A) R8 \# {, _
do-plots
! M6 v9 \7 F. }: a9 R6 h ask turtles [ setxy random-xcor random-ycor ]" b- P0 _. R" ^8 J m8 n C
end4 @, s; {0 A5 J6 x' _
to go, \" H: O1 ^- x# n! k
move-turtles* J% F$ e; C. _- l
eat-grass+ q* D/ _" a, r1 h6 M
reproduce
! S" e2 N9 N! m check-death
6 b7 N" O: R9 R* @7 z7 k2 l+ N1 ^3 U4 J regrow-grass
1 _+ E2 Y2 @' ?% `. W$ {% B do-plots
, u1 i7 }4 K$ rend
2 _& X9 j* P+ k* W9 rto move-turtles4 V2 [; w9 Z( U5 I3 u. F$ H
ask turtles [1 I( b5 \" ~! B4 J/ Q; |% k
right random 360
9 _& M# P) @, G" @9 t2 ]4 `% d forward 1
/ ]6 }4 J7 i8 L. z3 o, W$ e" n! M$ \ set energy energy - 1" C1 {4 Y4 K% E0 u7 N
]
* W3 I2 Q' F- p1 eend
, P4 w: |9 R5 T5 dto setup-patches
3 c* f6 z' Y' ~/ R ask patches [ set pcolor green ]6 O: A$ l6 L+ w
end
: [! ^; i. ~& E/ cto setup-turtles
, A5 {4 A: a, _, J' _: a create-turtles 100# g! F1 s9 D- w: H% q8 ?. _
ask turtles [ setxy random-xcor random-ycor ]% E" A9 [1 T f
end# @ d+ y1 i& @$ _9 b7 ?
to eat-grass2 x6 P& m2 m$ j$ C4 N. m4 m! Y$ |
ask turtles [1 I' q! J% f f: V+ _- J8 S2 p
if pcolor = green [
1 a7 @! w/ |2 L( @2 R7 G' n4 B1 K set pcolor black/ V! M4 M& v/ g s4 s$ a
set energy (energy + 10); O" Y- q8 b5 r$ u0 G* D1 c0 p
]6 ?% U1 C/ M! ]8 P
ifelse show-energy?# }' ^8 H7 F2 P# ^
[ set label energy ]
1 l# J1 a* P" [" W- J [ set label "" ]& P; m* W# y; C/ K
]5 C6 S* c% C' ]( k p& N
end
* k# C5 c+ f2 I( y+ \to reproduce3 `' h' `) ]! d L
ask turtles [
2 j) c* F( s- w$ s( T% }9 _% U8 K if energy > 50 [
4 ^" D5 ?; U3 c2 h7 E1 I8 } E9 _ set energy energy - 504 }% C9 l) K* F0 T8 G9 V& M* N
hatch 1 [ set energy 50 ]
, |; t( M1 D$ I0 ^ ]
; y" n* f* S2 m ]
3 U5 q) S: a7 rend
1 Z: c# }& X, F, h8 ^ tto check-death3 N9 o- R. q6 ]. w& V
ask turtles [
( v% R8 b; |4 L/ h: F3 w' q if energy <= 0 [ die ]
) v8 t0 k/ m& |3 j u- D) u ], r# |6 m# U9 S' g% h7 a# g
end( _9 h$ l$ p! U! x/ T0 f# _- H
to regrow-grass9 e0 \( J. g. G3 K* J- O; ?) J
ask patches [
# s$ h7 D/ f/ J& g! @6 w if random 100 < 3 [ set pcolor green ] s" ~4 ~: ~# d" ~" [; R! m
]
/ m8 `# M; |0 l% j' hend! Q* d/ s7 J# \8 c; @
to do-plots
+ s1 X6 o( X( k* J9 R set-current-plot "Totals"7 j F& m* i, P- @$ l8 H1 s; \9 }0 U
set-current-plot-pen "turtles" R( K, ^: [# P9 Z0 Z& _' o) ]
plot count turtles
( N/ x' u. l5 \ T' ` set-current-plot-pen "grass"; u9 P7 [5 @/ P" l+ u+ ]' `, v
plot count patches with [pcolor = green]
4 s8 Y* J& w+ i% Hend
" G# n4 D( N6 P. V# M7 O可是运行时提示no such plot: "Totals"
+ `# I0 n. X; U9 T2 g3 f5 Qerror while observer running SET-CURRENT-PLOT
& R& C& _0 ~( X called by procedure DO-PLOTS
, f, ~2 t) n3 r4 [; _' s+ R called by procedure SETUP
2 | Y7 G. s! R% n called by 按钮 'setup'
: H7 @; H& O6 L9 n& U; N. U- a求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
