我编的程序如下turtles-own [energy]. c6 \6 P3 n% X2 g
to setup
( h" B7 U7 I4 M$ i clear-all
2 i' g6 H' |( ?* S! j$ n setup-patches
8 S, U Q) L& e$ |3 y, q create-turtles 100/ t! p7 L6 l7 P2 ^) w
do-plots
. }+ W R" d0 [6 V/ x ask turtles [ setxy random-xcor random-ycor ]
6 k7 O! @* h6 A4 {% r1 ^5 Dend& ^& x* T0 ^3 T5 S/ D: A
to go
4 s7 E0 \7 C: |/ W6 J+ b move-turtles
' P" z# s* `3 o4 a: N& F$ L, h eat-grass+ v; Y% V" Z& i4 ~
reproduce/ |. R: U2 k# ^! H1 M- N+ k M
check-death/ e* C4 q5 o# ?# v) t2 B4 n# Y F3 G3 U& ^
regrow-grass
. ~" p8 G. f6 z, M. y do-plots6 T5 P" ?" y1 a8 L2 z3 r4 C% Q
end% @5 x' `2 S# H9 V
to move-turtles
{2 l% _7 r) Z5 _9 D( \ b ask turtles [
6 W8 U! C& E8 O! m7 O right random 360
( z. @6 _6 E$ j" `/ Q forward 1( i$ Q; W, d4 q9 p9 g
set energy energy - 1! m' y$ @2 _# ]
]
5 G% G* V; v/ W( @( J/ T3 Eend9 `6 T4 t+ Y' a7 H" y: J/ r. R, Z
to setup-patches- g/ `% x! G* W3 V6 s
ask patches [ set pcolor green ]
, K$ A F8 K6 L2 {' v6 cend
4 @6 s E: d8 y4 U, Eto setup-turtles
( o& k1 c% `; U9 }- y/ c( v/ S; \ create-turtles 100( U4 a, c* S( ~( q6 B& e! }
ask turtles [ setxy random-xcor random-ycor ]
; i( j/ ?" L# e' }( Zend
* q# I) y; ]3 J/ v$ j( @" n7 pto eat-grass
8 j9 z$ f3 R. a' t ask turtles [
9 z3 b4 ^2 l4 ~7 j if pcolor = green [
7 h, T& n. a w$ R0 |) @ set pcolor black% j6 d$ B( Q/ ?* ]5 H$ f/ l
set energy (energy + 10)) S1 r& t S, A+ v" J; h0 s# }
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ifelse show-energy?/ s+ p- L' v+ _; H& Z0 O
[ set label energy ] J" c' a5 f6 ^/ O% f9 `
[ set label "" ]+ O! R* _# g' ^+ \+ n O+ i/ T0 Q
]! C% V5 d$ [7 ~
end
7 x& T6 _* k8 O0 A8 f+ bto reproduce0 l/ {1 J! Y, [9 G* T8 J
ask turtles [; p' Z; ~. k4 F3 x
if energy > 50 [
5 i5 X: k& n* m# k1 M) d0 D set energy energy - 50
1 _) _ [" d+ Z hatch 1 [ set energy 50 ]- t' t7 {6 f4 S7 @ e, D
]! A/ b) {: D) t% h
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end6 H0 ?6 h7 Y# P( Z6 l1 H0 A
to check-death: L2 C2 l' F7 J) w+ z+ N
ask turtles [
. e( D# Q0 H' q# O- \, Y0 \- M if energy <= 0 [ die ]2 l5 E4 }* ?8 f9 u9 R# E, C0 R
]
" T7 p/ @* {: dend2 Z$ Y { G2 h; R2 n: K4 U+ F& W
to regrow-grass
2 X" F- E8 t# Y, V$ _9 } ask patches [1 S& @' F" V( A. i! H
if random 100 < 3 [ set pcolor green ]
\2 P* ?+ g/ n ]
8 S: r3 k* `2 p8 u2 C! l2 v5 o9 y0 mend
. z0 M$ w* t6 S4 Wto do-plots
3 v+ }; ~, W6 _: F- h set-current-plot "Totals"
A4 F, p+ N# M2 r! a& O% [ set-current-plot-pen "turtles"( u% A9 B6 x$ g7 N
plot count turtles8 k, d$ ` n- P O% P7 f
set-current-plot-pen "grass"5 Z* ]4 n& ?3 ?7 @
plot count patches with [pcolor = green]+ G6 y4 x z+ r4 |
end
: ^) r( L' z, d1 S( t& l8 Z可是运行时提示no such plot: "Totals"
( e7 ]2 }3 d W6 F# Cerror while observer running SET-CURRENT-PLOT3 @8 S' \3 B1 {3 t5 p: L. n& u2 C
called by procedure DO-PLOTS
# J2 {7 ], y1 x( a, [$ R6 o9 K called by procedure SETUP d6 K4 S% ~0 O, Y) J
called by 按钮 'setup': [( I( j3 [; R2 n, s/ ^; d
求大神解答啊 |