我编的程序如下turtles-own [energy]
; c* y4 o. B- Q! \- Z4 Eto setup( n2 l9 p# j% s
clear-all4 b9 Y% T- w( I9 |
setup-patches
$ n X* L/ f+ d9 K/ e: _: l2 e. S create-turtles 100" D0 C; C4 u# t
do-plots3 ~: d; I2 E3 y) R& W7 s. n
ask turtles [ setxy random-xcor random-ycor ]
3 a6 D5 ?/ R: L) `+ K* F) mend$ O1 }3 e/ i( T! b8 W# p4 v H
to go
; G- I$ X3 u5 O/ F8 ]1 t6 v move-turtles: S# ?0 r+ [- B4 ~/ d% n% T2 d6 Y
eat-grass
, I4 e' G0 q$ a! M* \ reproduce+ r* D) ~6 `, ]8 K+ _9 e+ F
check-death
# ?$ e) f2 x' F2 A regrow-grass
" t7 T9 Z9 U! s3 z, Y% | do-plots
- N/ z; p) e1 a/ R, ]- Cend. p& q3 q! D- T
to move-turtles
, e. A! O' D7 z% [. A ask turtles [
6 B( y K- x. q8 L$ q3 [ right random 360
) B o: C( t% \ forward 1
7 Y( L8 t0 I2 U. Q- }# P set energy energy - 1
) e2 D' s+ q% _/ @0 \9 [2 k ]
( ?' f! ]. O7 |1 S J. O0 Cend
; c+ f- H. w1 H/ s, s; cto setup-patches4 K1 N, R; C4 U6 ]( A: b9 s
ask patches [ set pcolor green ], w! l& i/ O# x1 x
end
: f2 n: K2 d" ~( pto setup-turtles$ ]& L6 k& D Y' `% K: Z2 g I
create-turtles 100
3 W- D2 S# w$ q/ v S0 I# S ask turtles [ setxy random-xcor random-ycor ]
7 x* f# o) T# ]end) `8 V6 `: C7 H/ l
to eat-grass
4 x( V1 D8 H$ e. _8 M. M& ? ask turtles [5 B# P( B5 x& Z* h
if pcolor = green [4 Z+ }: e# [" v {, b4 b
set pcolor black2 ?1 t6 n' i# l9 L% T" d
set energy (energy + 10)+ z* H, F, l# d/ h& }
]
# a( P. ^, H( x ifelse show-energy?
( f! s' o/ m% X7 \9 ^ [ set label energy ]: b4 J; P! J( i+ s& h! t
[ set label "" ]
! R+ r0 b6 f, S' \" f# S ]
+ h9 g& } o; x) oend
! D: C0 P; d! U( E+ V, pto reproduce* i$ T- c; }) e! j8 U @9 ?, A5 g+ Y
ask turtles [
% _0 C, y3 f7 I% z if energy > 50 [
# O, b) z7 X& k set energy energy - 50
. p& Q& g3 }: g b' z hatch 1 [ set energy 50 ]
( O/ M; O- N, z9 v: }: R ]
. C; [# O, n% P) x5 o ]; B6 h( T$ t. Z$ a8 J
end
, E# E8 W+ a4 c" C* W hto check-death" }" w, c! @4 F9 g- Q
ask turtles [
1 {2 o6 y! s* l# Y! F if energy <= 0 [ die ]
; f* a; t U- Y5 f3 P) L5 L2 T ]. J5 N9 [4 G. g' u6 g
end: n+ Z0 M( `% j7 R7 M
to regrow-grass }5 f2 H- T. J3 a6 O
ask patches [
O3 L8 O& n8 ]: m if random 100 < 3 [ set pcolor green ]
( L F% s" r% W. Q+ x( X ]4 A9 h5 b9 ]3 _- [+ V
end
6 A; T! ^; v1 \+ E2 x* s+ d6 S. F; oto do-plots
) H: f z* d# i$ i. a; Q3 ~ set-current-plot "Totals"
4 u8 T" W- x! ~ set-current-plot-pen "turtles"
5 D/ z4 R2 U& x0 r6 j plot count turtles
8 t2 V7 |9 H; I' S& Z set-current-plot-pen "grass"
4 h( @0 b& @0 j! d4 x" g plot count patches with [pcolor = green]
7 N$ y8 V3 E! R5 P. oend( W$ F6 O, e1 O( P I# U z [
可是运行时提示no such plot: "Totals"
/ i; i7 l+ H0 I* l1 y. G4 o6 M# O$ nerror while observer running SET-CURRENT-PLOT
/ [( {( _3 a- f9 R+ K8 o& g6 Q called by procedure DO-PLOTS
/ h$ B% I( T* C- h d+ z called by procedure SETUP0 V1 R3 L" ~" q. M* A3 Q: J
called by 按钮 'setup'* s7 @* k; r( L" U: R$ z/ N
求大神解答啊 |