我编的程序如下turtles-own [energy]/ V7 |2 L+ ~8 j. j) H/ u; w+ w# \
to setup
; b5 @! R4 y3 Q- b) P# `7 G clear-all5 t9 q* o4 ~5 D# }. s: p+ e
setup-patches
6 g% ^; {3 t; ^% M) A/ l$ ? L: b create-turtles 100
# N: G/ t7 K9 F. P do-plots
0 e3 G7 A% ^* B0 k6 y- A, T& w/ ~ ask turtles [ setxy random-xcor random-ycor ]
* o/ U7 T! S/ _+ }end, X7 ]$ e/ [( S+ {; u# A* n9 z( u
to go
% c; \" ]: t& _ move-turtles
0 j: U* d, e2 r9 ? eat-grass
$ n4 P6 \: R8 l. O! c8 `' h reproduce
/ C; l6 N8 ]0 m/ k5 [7 O8 z check-death$ n! n3 [' Z% }1 B* ]% f
regrow-grass
- R' a8 ?. B" [8 M" K do-plots- b' M" O0 g" b1 V
end4 O. Q6 q4 F) ]6 k
to move-turtles8 O" k R. l! ?7 U
ask turtles [: `5 b {+ l9 V2 I" h0 q) \* C6 v
right random 360
( I$ k/ U8 q+ E- I2 d7 G" \ forward 1
! V9 I, U+ Q0 ~4 V# H set energy energy - 17 i5 D3 _1 }9 h& N
]
. O7 Z; `/ V# aend
' U" V4 a7 C2 \* K4 `: Pto setup-patches2 R3 C8 a3 N( ]* s* Y. [
ask patches [ set pcolor green ]' Y1 H# s: |* f, m4 s
end9 X; i2 F6 z" T) B# D6 p7 e
to setup-turtles
5 @3 Z d# D. B6 F% s2 ^! y create-turtles 100& N% V0 a4 }# ?9 Z
ask turtles [ setxy random-xcor random-ycor ]
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to eat-grass' y2 t- J% z" q% v" Z: _
ask turtles [
c; x0 z( _ K. ?1 Z3 L3 |& K4 P9 M if pcolor = green [7 A$ Z. s+ F3 V' t" K4 V
set pcolor black
9 @1 C$ U' O- n/ Y set energy (energy + 10)
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ifelse show-energy?
& w% i9 b4 O! \8 p+ h [ set label energy ]' x2 U3 n6 a. V5 b; X
[ set label "" ]% ^( h6 e& j* ]: P: t/ U
]
H4 _7 a2 U4 j/ r( Cend
5 Q' Z- K0 X) F0 ?) ^to reproduce" {( w! Z( F; U& K4 M8 i" q
ask turtles [! ~7 v5 E( C2 B2 N; ^
if energy > 50 [8 t4 D# U9 T: Q3 E5 f, `
set energy energy - 50
, U0 d) N u' m H6 C# U5 W hatch 1 [ set energy 50 ]
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end$ h0 |! w C! W) B. r) F
to check-death& N" B5 }4 l0 L% v' s
ask turtles [
: r3 y0 x( x4 Z if energy <= 0 [ die ]0 T n; L7 B5 g" M
]
# N& Z% Q# n: i# R& b7 N' Aend
' b( B3 `( |( a# Mto regrow-grass0 q; F) G2 i* Q" l$ H2 J. Q2 ?
ask patches [; s* k, }8 ]; l4 d* a# o
if random 100 < 3 [ set pcolor green ]- E+ b" W }# x8 f
]
) `; A% A% }; }8 @( \: M5 t* w. lend$ l, ~$ E8 ]4 o' w! F5 {
to do-plots+ a, e* u6 y9 \# ?( N# c; V
set-current-plot "Totals"
( _# r& q) ^* ?. O2 S1 G! E0 ^. Z set-current-plot-pen "turtles"( X& ^3 i8 {6 U3 ~
plot count turtles7 H2 }* _! H4 { v3 W
set-current-plot-pen "grass"6 V; J7 I( z3 s, F
plot count patches with [pcolor = green]
! S8 c# p0 p2 Dend
/ x8 e1 B8 y1 b% f. @可是运行时提示no such plot: "Totals"
% q: ]* O9 E+ Y1 b4 P' X* i& [error while observer running SET-CURRENT-PLOT0 e& Q# N }3 L8 ?0 T; B
called by procedure DO-PLOTS1 f9 ]; m2 O1 w8 n' D! e U
called by procedure SETUP
( x# K5 Y4 e) q6 v% ?2 K: ?# a called by 按钮 'setup'
! o0 x8 Z2 f0 P/ x* C求大神解答啊 |