我编的程序如下turtles-own [energy]; m9 P* ?* s8 e
to setup
$ Y3 f' A5 z5 J5 E. a clear-all
- P- U5 ]' |9 @0 s8 i, R% n setup-patches: Q W, H5 I$ s
create-turtles 100- t4 e" G, H9 x0 \! t- i
do-plots) R4 X# j4 \! w D7 U% R) d3 j
ask turtles [ setxy random-xcor random-ycor ]! u) U! _. _2 G8 C7 o6 ^$ f
end; f: B) {5 R0 e- n. X$ k
to go2 a P8 V8 z# U4 m0 {7 {+ s
move-turtles
' I: [- |5 f- Y8 {2 s q0 W8 A4 j eat-grass0 w! d4 q, \/ V4 B; D7 g) f @( N9 |! m
reproduce
/ q9 N" B0 \" F" h check-death' f" Y9 I( P$ U: j: H' C
regrow-grass
$ A M# v0 V2 y5 [ do-plots1 m' u% s* | H( z- k
end
E3 r/ Z, |% ^" I: T k) P. }; fto move-turtles7 b% a! ^5 P& R* u
ask turtles [
' k }* D% Q+ G, H4 z$ u right random 360- O- a% m7 H5 r: Z: A1 T
forward 1* O5 j6 A* M# x
set energy energy - 15 b, ?& k$ d( v9 s) Q
]
1 H8 B( C1 ?( H+ z' M) Mend% k& o& `! ~, C9 L* {0 X7 u
to setup-patches
' q* n+ r* X% T2 r ask patches [ set pcolor green ]
+ P/ l/ W: o/ {; kend3 S% k. {4 q9 m+ L' R
to setup-turtles
, N# m7 } Q" i+ M; Q u create-turtles 100
: [+ `2 z5 K+ r' C6 Y ask turtles [ setxy random-xcor random-ycor ]
0 C4 q Y6 M$ k% ~& Kend" D3 t' t- V8 S0 l4 }
to eat-grass
& J2 o7 E& L" Z% n h" P ask turtles [4 m" i J8 m+ ^: s3 I) m
if pcolor = green [8 }' S3 |4 ~9 T, @
set pcolor black$ @8 d: a3 v$ L" k! S4 }
set energy (energy + 10)
3 t- Q2 V3 l5 L! ` ]
" t. D) L* n: z ifelse show-energy?
: {& f, p# O7 p* V1 U& [ [ set label energy ]# a; l. ]- ]* x T
[ set label "" ]
& \* ~; S [0 T, | ]$ F$ r! b+ T+ ^# y! m, {
end3 |. l% ]) ]( J4 ?
to reproduce% G" r2 J7 b' Q( j% g) m7 O% \
ask turtles [" p3 N1 B& W$ d6 |7 J
if energy > 50 [. `) A, ]) g" O! M
set energy energy - 502 R5 t, I: F8 Q% A7 f b( _% [- d
hatch 1 [ set energy 50 ]1 k1 Y+ h q F7 \) m
]
! [( U7 ?& L1 {( h3 ]# d ]3 }; {- x$ Y4 H% V9 ~& h
end$ G- }0 e$ S! ]. a
to check-death3 P+ S7 x Z3 B' V( k9 ?
ask turtles [" e6 ?) `% F( I' R
if energy <= 0 [ die ]
, E2 g$ m" J/ H( y6 Q# n$ E/ h ]
+ @0 \+ T* c; U$ u' Nend
0 j7 S$ }& X8 S" U0 rto regrow-grass
3 P+ I! o7 E8 L9 ]- a/ p( _8 M ask patches [
+ j8 o K; H8 h if random 100 < 3 [ set pcolor green ]* ~( v* M8 N, g) U
]$ b$ V8 w, ^% Y4 C
end- p1 q; J9 U6 m6 X. O
to do-plots0 \" G3 K0 Z) b- f) X1 T
set-current-plot "Totals"
* J m- i( s+ \ set-current-plot-pen "turtles"1 I y0 ]! V& r, K- {) t/ j( N$ f
plot count turtles" Q& s3 E% ?1 ^, R+ u
set-current-plot-pen "grass"
/ u$ ~" b' \9 ?# U plot count patches with [pcolor = green]" Z6 t: \1 H5 B" |
end6 J# h$ x" M/ m! y0 i; g
可是运行时提示no such plot: "Totals"1 r8 b$ v4 E2 R4 A1 e0 d8 S, o
error while observer running SET-CURRENT-PLOT
0 L, v$ W* l2 V2 C! ~9 T3 Z ] } called by procedure DO-PLOTS7 I; ]% ^8 `/ l
called by procedure SETUP7 G5 ~9 g% S' f/ z' [; |9 p* t
called by 按钮 'setup'1 a' e% ?/ m3 X9 n3 u' p$ o
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
