我编的程序如下turtles-own [energy]
, v' W+ r4 I5 ]' b9 A) `to setup U3 a" p9 |+ E7 H/ x8 k( l0 E: o6 t- Y
clear-all
. i0 E( `0 ]/ i4 M+ P setup-patches
9 N$ X6 }8 p% |: F create-turtles 100
4 ~$ G' ~2 X) [, |* H4 D/ S do-plots" ?& l2 i7 q2 f3 Z- H" O
ask turtles [ setxy random-xcor random-ycor ]+ P& |. c" _ K3 @
end
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move-turtles) Z7 z5 e- U- s& y: K
eat-grass! V: L; K9 C w+ H0 C$ R
reproduce
- v" P W6 k. D4 C, M check-death
& }+ ~9 u! _- |% \$ d regrow-grass
2 K( ^+ u7 ?% Z+ y: l- ?% [ do-plots- t. A8 f+ ^% ~" l( E$ i% @ y$ y
end
1 F( b8 {4 p- w) f1 Sto move-turtles$ p3 t; U3 P0 J
ask turtles [
1 ^1 M) e( _2 b) ] right random 360! }- w& N7 ?- H8 ?
forward 1
& W& i+ G1 R. u2 g- p" x- \. c set energy energy - 1 S' d2 M2 R) S7 S; K4 V$ S
]
, D7 G0 D9 ?, H5 vend
8 o. R- p- W3 A" x A; ito setup-patches6 o4 x- d/ d* ]+ @. G: H
ask patches [ set pcolor green ]7 Y9 e/ @+ _# h- d
end9 f# _/ {* ]4 `
to setup-turtles3 [! {6 b0 y$ ^( G- |) E" @4 H
create-turtles 1002 [: v! }5 ~8 L8 H
ask turtles [ setxy random-xcor random-ycor ]+ _, \6 \' t8 n1 Z
end
5 Y& J! x9 s9 qto eat-grass; R/ I% J8 @: L! G+ x. k/ o
ask turtles [
" Y, x; l7 U2 m; d if pcolor = green [
o3 T1 q' r1 g2 \ set pcolor black
! H, S4 r/ ?) p7 r; X set energy (energy + 10)
g1 p' T1 K- H4 S ]
, I* i7 k: O! N4 G ifelse show-energy?
: ~6 L$ }# _, z* e# n& ] [ set label energy ]! Z7 X3 G) J% J4 D
[ set label "" ]% d, ~9 `5 `( n6 {% Q% q
]
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to reproduce
& B3 g: N+ q1 ~4 T* L ask turtles [9 ?' ~; {; b( ]: y
if energy > 50 [3 o$ G- q# A% ^$ H9 R
set energy energy - 50! I U* ^$ o9 V
hatch 1 [ set energy 50 ]1 U: q7 b. E$ z: B/ n( A
]: n6 F5 Z$ ?8 |; j" F
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end1 K$ K4 L+ c5 ~4 S0 X: N" [
to check-death
$ m5 K5 ?8 w% c$ i ask turtles [+ r( j: c3 @- A2 \5 [, g: G: b
if energy <= 0 [ die ], S/ d7 P% U7 q# X& J
]- B% L6 t: A; C: o! m
end
8 K4 n& Y0 } F; {- S6 _to regrow-grass( a# w3 M5 M4 C2 F* I0 z1 {; I
ask patches [+ l3 E& K& y& S. h5 E5 ~7 j# n2 _$ ?
if random 100 < 3 [ set pcolor green ]
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/ r0 t* j2 K9 j/ L) p4 [end
3 B( B& L; Y/ ^to do-plots% j% p* H$ i0 a$ v& ]# }7 L
set-current-plot "Totals"
" x l. |2 X; N: s2 y: H set-current-plot-pen "turtles"- }$ H& ^. f7 f! ?& M& e: P0 B
plot count turtles9 N4 g* \$ S; K9 ~, p" [
set-current-plot-pen "grass"# u- |: ]9 O* p4 @
plot count patches with [pcolor = green]
7 N. Q. K }) u* t! I8 nend% I5 N0 L4 r" b: {$ Q2 A( _
可是运行时提示no such plot: "Totals"
6 ^! Y1 A. J+ z) `, L' G$ @! jerror while observer running SET-CURRENT-PLOT I- O8 h5 b+ ]
called by procedure DO-PLOTS
, F& V6 D+ U# e: I! F2 Z called by procedure SETUP `* X: j6 q* |2 \* s. d* P0 H
called by 按钮 'setup'
E* P% x6 A6 t5 V8 m8 F3 o$ x% t求大神解答啊 |