我编的程序如下turtles-own [energy]
0 a9 k0 x$ p7 C" W+ j& w3 U5 \to setup
: Y ~4 S" r, D, \7 }& v clear-all3 `; H6 U/ w& h7 [( u4 g. F
setup-patches
2 P/ W9 o+ Y1 h$ g7 w0 y7 O4 r7 R create-turtles 100
7 D# K3 b, T" z# |& ^: p do-plots
0 F) f$ E$ f; U* b ask turtles [ setxy random-xcor random-ycor ]
7 i1 \% D0 \) s. i; m) `, [8 N9 k {: Mend
0 L, |# H! ?, V# A) e+ w5 _to go
/ H2 N8 a( d5 }- D! V3 a move-turtles
7 J8 |# U2 I8 \, C" A/ A$ m eat-grass/ D9 e' S/ P. L4 t
reproduce
: z2 w- s3 A8 [" }0 N: }7 O check-death
* r9 |: L& s7 Q. W" Z l1 j regrow-grass
, `# m! _5 q8 o* w; n n do-plots m" \: P% U) r/ h$ Q) n( g
end/ m( H: K1 O# U& F( g( \
to move-turtles
) m7 }- n! N, o6 i' f ask turtles [
7 [6 d; N! L, P right random 3602 R# J% h7 M* x
forward 1
) a' m% O x$ B0 I9 X set energy energy - 1$ V% M# b- O3 P; w: X
]1 k M1 {( k# W
end
' l7 _- |0 c* R& d3 e6 s- H5 dto setup-patches
6 G" p3 J; f9 q9 G1 F- n ask patches [ set pcolor green ]3 Q( Y# t8 G4 y" u
end
9 k1 R j, x% X2 m S& ^& {- Pto setup-turtles
+ {6 z7 s& u; R3 e- j3 k2 Z9 z! Z0 E create-turtles 100
3 I9 U3 _+ X9 N ask turtles [ setxy random-xcor random-ycor ]+ a: C0 {1 ]- F; T4 y& Z! P
end
1 ]6 I; K, ^" j8 Q+ rto eat-grass& H' g/ Q: R" y+ P0 l7 g
ask turtles [' G- S5 J4 A/ M! X, V7 J; C& u% g
if pcolor = green [) \$ ~5 Z2 H$ a
set pcolor black
* ~- m I/ L' i0 p* O, }6 M set energy (energy + 10)
5 d9 U, ^2 @7 c+ B ]1 e& J% }) F, `3 r
ifelse show-energy?
" i( D5 o* l0 U. I5 z* K3 @3 s [ set label energy ]
6 m$ l6 e7 z; j/ k( q' i4 m [ set label "" ]
& u$ \& ~1 \. D& ^ ]; L. b) A6 }% k' p
end
5 d9 ^1 K2 s% ^/ lto reproduce- f* a% S: U ?
ask turtles [
0 L6 \* j% g6 E9 b. c1 @ if energy > 50 [
) F$ [6 N) \+ d' {* f2 P U set energy energy - 50
9 X& ?9 n9 z, n& F% T2 z hatch 1 [ set energy 50 ]
5 U$ n7 Q$ g1 u1 X7 a ]( B/ T, v x% C3 i
]
z# ]! T1 P) Yend
" i0 {3 ?; H, Ito check-death5 \+ A) Z/ a7 o6 x( H& }
ask turtles [0 X U6 `$ Z% J; u( m
if energy <= 0 [ die ]1 z; u& S3 \' O
]7 X R( P6 r7 u: O. b
end
# o$ ~1 ~+ ^/ a/ Hto regrow-grass b# [( b; O& ~! H& M- U, b
ask patches [
3 u, S1 G9 L4 e/ l: H& X if random 100 < 3 [ set pcolor green ]
7 ?* ?, }; ^" O' p ]
7 E( u' T: Z8 t5 @. x G& b2 ?end
( W {8 _' j% C. p" Wto do-plots6 l; y& i) d# b# D
set-current-plot "Totals"
7 F( [1 _# N! I. [- h0 G set-current-plot-pen "turtles"" o) Y/ {9 W- f) y2 G
plot count turtles
: y' j3 W" N- c) `# j% r: i5 i3 M set-current-plot-pen "grass"
]# }) ^% a Y$ K- S# c/ ?: @/ H8 Z plot count patches with [pcolor = green]5 v" o; \( o# q% ~
end
0 `1 o+ a i9 ^2 B e可是运行时提示no such plot: "Totals"
; O4 b: _# r" |% c. [" x3 ?error while observer running SET-CURRENT-PLOT) N( ^, k+ G9 @0 s7 F3 V& o: u7 b
called by procedure DO-PLOTS
) L( F( l6 c1 q& R# ]- a: v called by procedure SETUP6 S. J% _+ Z$ K! ~, n& _
called by 按钮 'setup') [1 K1 [0 f7 @7 H! P( {
求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
