我编的程序如下turtles-own [energy], T* \! J, v0 w; S, f
to setup7 [6 r ~) \+ B$ H
clear-all) p( v( n d6 t" O6 k2 _
setup-patches
3 ^4 a! q, B. W& i$ Y create-turtles 100
. h8 Z4 r6 _5 \4 N( m2 I$ U do-plots/ y! x( `: [ Z! X/ _3 i, T9 {
ask turtles [ setxy random-xcor random-ycor ]
3 K$ Z% B# @( c5 l' S2 }* G/ d6 Y: Yend
, B2 V$ G/ k4 c* @* y3 \to go
4 \: i: X% Y$ P9 `8 u7 e move-turtles
) p) @* a% z0 p- k( `* Y3 j eat-grass+ j6 o4 T0 l2 h1 H" q
reproduce: k! ~( V, m) v
check-death
, ]- u% ?: g7 G9 l5 o regrow-grass3 ~) E0 o; {5 ^9 e3 u# Q: C- U
do-plots6 t/ w q! o: _& u# x9 R& X& |
end
, ?: z7 P0 E& n3 n, X7 Nto move-turtles9 s' D8 \) r( x% v" ]' M, g2 O" f
ask turtles [
; c: R* [5 O [$ w right random 360 L' R. W O) @% @: _ t9 r$ w$ M. e7 S
forward 1
) B/ J! q* ]& e: e' ~ set energy energy - 1
- {' x! b9 \! J" o& T ]
+ O9 n" x2 \5 D! {/ G* Y0 ~end) c P8 @( s. [! G# f4 O4 y
to setup-patches+ m0 W- \+ C e7 ~; s; Q# u; B, A% ?9 I
ask patches [ set pcolor green ]- t1 m$ D. |4 M/ ~, ?
end2 M# ]' z, _+ E& w9 X; U/ P+ x
to setup-turtles# z+ n0 }) r6 o2 P, O
create-turtles 1006 S% M) H2 A4 S" e5 V$ l
ask turtles [ setxy random-xcor random-ycor ]9 Q; i7 u; l8 n. s
end
6 e8 ?+ U8 v5 p4 }# X$ Yto eat-grass
4 N X5 I1 w; s+ P! { ask turtles [
4 [2 i2 c7 e3 o. u if pcolor = green [' N* v+ P- p8 v' f I+ E- O3 H
set pcolor black
) D" E, G1 H' v* Z: A set energy (energy + 10)
& U m+ d2 ] T ]! R, y, \0 N( i/ g5 q2 l' r# l
ifelse show-energy?3 h; i$ a; g5 \1 s4 {- o6 U
[ set label energy ]
+ y2 R8 R' l' U. i. a [ set label "" ]
1 K: h/ Z: _/ ?7 n$ I ]
" I$ s! r) w ?! v1 q7 rend2 S- m* g$ y# P" \3 y. k& H1 G* C
to reproduce
2 a: c3 M; X) y" Q# m ask turtles [3 ~, v( _& c" D/ ~& B
if energy > 50 [
3 ?/ O) w) W, B9 t0 ~, m# N" E4 Q; N" L set energy energy - 50
2 Z2 T1 {! G2 g$ \% e3 @: B hatch 1 [ set energy 50 ]
5 [7 c" e3 m) e( o) y4 C ]
4 V+ L6 V$ `/ P ]
. X/ [% l6 u4 ]/ mend1 T9 P& I6 R0 G
to check-death
, C9 T8 H$ d& f ask turtles [+ Q0 A+ g' d5 j; E3 z+ ]
if energy <= 0 [ die ]$ |: K' }( x7 Q& G& D6 A
]
' }0 t- Q& ~$ ?7 Q1 O3 W9 v( s% bend6 \; w8 Q; I6 @' `
to regrow-grass# |; ` R) y& L+ L- Z
ask patches [
i/ v p! |. e" g( U if random 100 < 3 [ set pcolor green ]1 g: B0 V! U7 a) n( l0 }: l( w* j4 T
]. n' Y/ h1 d0 g7 R, E6 X
end% s" @* p: G7 w: W' k3 A
to do-plots
' B+ P0 w1 Q5 t; f$ H set-current-plot "Totals"
& k- @1 b: Q' m, r6 G- O' F! m P set-current-plot-pen "turtles"/ d/ G2 v% o: ^. G1 Z
plot count turtles. N: T+ p$ T) E ]. q, l6 \
set-current-plot-pen "grass"
9 ^" I1 T! w; t4 X plot count patches with [pcolor = green]
8 h; X+ j) f5 }end
9 l& o/ p5 J8 K8 o2 d" L) U# V可是运行时提示no such plot: "Totals"0 c/ |( r. J; T6 o0 d e; L
error while observer running SET-CURRENT-PLOT9 H5 n9 Y' t. U, G" C
called by procedure DO-PLOTS
+ G8 |( D' R( ?! p called by procedure SETUP
/ o% U4 q% e6 w4 F" W# l called by 按钮 'setup'
: t: i+ H/ V: R0 T求大神解答啊 |