我编的程序如下turtles-own [energy]) t" |2 C) {* U. X- w
to setup/ J# \8 l9 e2 S6 K# |
clear-all2 i4 [8 N9 ^0 |9 A
setup-patches. K1 N. u( I4 w a8 }) F. X
create-turtles 100" Y8 b8 Y# g0 C; k8 g( T2 G
do-plots
5 w8 Q" E! q0 u" r* V, V ask turtles [ setxy random-xcor random-ycor ]
+ Y3 E7 C) z1 m2 F9 hend6 f7 H$ M- ~( |2 H
to go
2 @% v+ q* S' L# e' v& B7 s move-turtles, R2 N" W! O2 P2 t( y
eat-grass
" k8 C S7 N% v1 s" Z8 [ reproduce
: e7 {, X9 Y8 q' `' P+ E check-death! H/ c" N0 @" P3 _$ n+ `& n5 {
regrow-grass
! e) j( [) d+ t3 F: ^/ L6 \' ] Y4 z do-plots
0 `2 k/ e: A; d, Send3 `) A& j* n2 _3 p2 M9 g2 |% I% b8 ~
to move-turtles
' q/ P" u# k# O& p ask turtles [. d8 V& {. q- T+ Q" x, d- c
right random 360! m* W. E& j. \6 W* F( v
forward 1
7 j: M# q5 F9 s, T Y+ i: N' j* G6 n* y set energy energy - 15 v4 n& g7 C$ E* s3 W
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end# z; \1 X, t( x7 f& c$ ~* K
to setup-patches
" u4 l' u1 W6 M# G! ^4 G2 U ask patches [ set pcolor green ]! W) G4 I9 S3 V! `) c: Q O" e
end
1 i. h: U, G3 w4 W7 s7 Bto setup-turtles, S: T' A4 e" }: Y
create-turtles 100* c( v k" L H9 l) t
ask turtles [ setxy random-xcor random-ycor ]6 B: N' A- X, R
end
1 Z: z0 Y1 {/ M* | c% pto eat-grass
7 [3 @; d( y" H0 C1 @ ask turtles [
3 [, I& @% P* ~+ Z( h2 x% O if pcolor = green [% l) @( }5 l# I' P" n- S
set pcolor black
& \2 b/ S7 a, Z set energy (energy + 10)
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ifelse show-energy?
+ K- y( b. `- m5 ] [ set label energy ]
2 s9 m& P; p/ |# K8 s6 @ P7 C0 j! y [ set label "" ]" K1 `5 ^5 M' E. O8 z
]
# Z- @( [4 P# Pend
, o% j" n* U6 g$ c6 Pto reproduce
% z: H' F. W) n1 O5 m- N, G4 n: E0 O ask turtles [
" m" W% e% `* f* I- V if energy > 50 [$ e6 o9 W* P7 V& X. m- G. k
set energy energy - 508 O& x! o% C3 i6 C: E. E5 y
hatch 1 [ set energy 50 ]
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]
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to check-death
6 V5 @1 `8 s* I8 S/ z ask turtles [( q8 R6 |, s5 n4 A
if energy <= 0 [ die ]
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end$ }& L+ h& |8 }3 S% u
to regrow-grass
D+ B8 e: q( W' v, E ask patches [5 o" r* e9 y. f B6 j; `
if random 100 < 3 [ set pcolor green ]- I2 ^4 w% }$ D2 T7 z3 m
]% ?6 S+ U w5 `! M
end
, n: X% E- o+ n* }* Uto do-plots
' X0 t+ L5 f9 G8 n; _/ R set-current-plot "Totals"
% o5 g) e6 G M# } set-current-plot-pen "turtles": k0 u, f4 H) c, U3 s. E
plot count turtles
, a& Q# r9 S( l9 _6 M! c* }) M9 r. B: E set-current-plot-pen "grass"
; }, `+ P, y. s5 p plot count patches with [pcolor = green]
' u2 F e7 f5 w8 qend& ^' U3 o; b9 }7 z2 K2 j
可是运行时提示no such plot: "Totals"! g$ F2 l: B* L
error while observer running SET-CURRENT-PLOT) ] e0 I) X1 `9 B
called by procedure DO-PLOTS
J) z$ `0 f* N3 ?, l6 ?1 K- P called by procedure SETUP9 \9 s n% G, e* \8 Y
called by 按钮 'setup'+ n. r" `% G. |3 x2 \
求大神解答啊 |