我编的程序如下turtles-own [energy], r+ D0 @) M7 g, D
to setup
0 P- t% T) T4 O i9 g& I clear-all( b* p3 H9 }- z+ ^+ Z6 `& H
setup-patches7 y7 e3 t8 a6 u9 C/ N
create-turtles 1008 E3 w* i0 i5 k h" h- S
do-plots3 E! X q9 k! c( `
ask turtles [ setxy random-xcor random-ycor ]" | `( [' N) o2 o! x
end
' G; Q( t) b; z% D. U4 _to go: b3 {+ R; X0 ]$ x+ c# S. ?* n" Q
move-turtles4 o# d2 z% F0 N" `
eat-grass
1 r5 a" F! H3 x- U reproduce4 H- E! @$ d s8 r) F4 f. k
check-death
; f6 p: _3 c; m+ n4 Q+ W( N regrow-grass
* A+ p! w; s9 g; L do-plots
' f: l, t* c: \6 d/ Oend
, o8 }1 M1 |0 F" Z% r; h" T' J( qto move-turtles5 E! n1 M ?: D) e4 m! D- j( b0 L4 l
ask turtles [5 Z7 v$ d, P4 t, @/ @! ^
right random 3601 @3 A1 q9 s2 _+ S8 \5 O& r
forward 1
% x/ C5 N1 w' S L+ Z5 |/ n set energy energy - 1# z7 z3 c- |) s/ ]! T6 j
]2 K. E/ M5 [/ b [( m
end( c% O4 F% A5 a* F4 r7 v* B$ p7 X
to setup-patches' p4 `2 `+ |* ?- E& s% J
ask patches [ set pcolor green ]# O8 z' n) k% ]7 j
end- M/ H# y% R2 \( w, A- l& x
to setup-turtles
! S$ _: l6 Z/ g$ W& P create-turtles 100
9 i7 I3 ], N3 P) p& d$ g3 E ask turtles [ setxy random-xcor random-ycor ]5 q. Z) X" h5 `5 F: A' R
end
6 e, Y6 G5 p9 Lto eat-grass+ A' [1 _! N- h6 \ u: h2 e% r; s
ask turtles [
4 a* a* a# }/ U if pcolor = green [3 Z; ]& j9 v6 @. k# ]1 j
set pcolor black. y; }- t$ v! W \+ e6 m2 s
set energy (energy + 10)4 b8 y0 q/ ]$ y' F, c, D
]
; |2 M' D' _) l, E2 ? ifelse show-energy?
2 c \! m9 d) a+ B+ ? [ set label energy ]
" k& c6 w. _/ x, ]# [& c" [ [ set label "" ]
, R) B) T. \" K, o& D A5 _1 X ]
9 A2 \% ]4 {+ t I. w) E2 send
2 y/ I2 h' [3 `- o; ]4 Q8 S- e0 gto reproduce; r# n8 n2 }, \% }& c: o- z- {$ g
ask turtles [7 F9 q3 e/ Z9 L o1 ~4 }: W _
if energy > 50 [& I/ ~& U" {3 z1 e: n3 A$ X
set energy energy - 50
7 j2 f/ Z: s' c* L8 K hatch 1 [ set energy 50 ]( U1 w" w ]. N) } B: Y0 I
]
4 M$ X3 a& H$ _' }$ C! L* \ ]8 S& ~4 r/ L8 k
end
/ Y R- w% h6 Z/ M- W$ ~/ \$ Yto check-death
2 M0 w" s- a# t D* G) ~& P ask turtles [
/ @; x. U! S8 j6 M" u+ R if energy <= 0 [ die ]
I& T# Z( L! x. w; g2 }+ d ]
- j$ E! s4 p" _% ^; o% B6 q Oend
) @+ h7 ~0 l, _! p% ]to regrow-grass: z( h/ q+ r5 s" l' u* A
ask patches [. T: o9 j7 Z) \
if random 100 < 3 [ set pcolor green ]
0 r2 ?( g3 M$ ]$ W3 F7 o) N/ z) W" O ]
& U4 \1 v% n/ send' y: Z) l, K3 W
to do-plots0 \8 E+ C- O4 V# F. y5 l
set-current-plot "Totals"
+ {; d# e; Y* @& M set-current-plot-pen "turtles"! g* }+ F- g5 ]
plot count turtles
7 F6 A. u. I, e& `; A set-current-plot-pen "grass" l" ^% f0 u8 Q& e
plot count patches with [pcolor = green]
, ?" e0 @+ ?' v# F& N- lend
- @% W K! {* u0 A: Y可是运行时提示no such plot: "Totals": A5 s& n9 j) w5 ~7 L9 U" y& m! Z
error while observer running SET-CURRENT-PLOT% j( O1 k! ^0 p* k3 g$ D) ~- O
called by procedure DO-PLOTS
& a* Z" d! g: K8 k& C7 `/ b3 V called by procedure SETUP
9 t" ~" N# T x$ d2 s, |( b called by 按钮 'setup'
8 Y" r* C5 r9 A" ~求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
