我编的程序如下turtles-own [energy]
5 E: a% H* w3 r( Z+ b5 h# _6 Dto setup6 L2 U) `7 G; S( r, V: |2 w
clear-all+ a7 j& @- G" x( N
setup-patches! ?1 P, M# H Y0 X4 n' g; b
create-turtles 100
% |) c5 }! U9 _ do-plots
: V1 Y) ~2 Y" Z1 r ask turtles [ setxy random-xcor random-ycor ]
! {5 C% D9 O8 V& Jend B Z$ d5 T7 T. X( h) |
to go' h3 F4 u, G( X0 D2 Q j+ u% r" Y
move-turtles& _. b% k/ d9 ^5 W) Q9 q2 D
eat-grass
) y+ q0 Q e* t5 J* v- l reproduce
% | N0 h Y2 i3 k' M. ?! n6 y D check-death
% f# j$ s1 \9 @9 o1 m regrow-grass! }+ H( c. W5 W8 Y& o. G& e
do-plots3 O0 v! B ]* ?; t! C
end
& z( j( W; s Oto move-turtles6 |/ N; I9 W1 f6 p5 g
ask turtles [
* `( x# D+ W L# i3 q! {# U right random 360
/ k! F' s/ z* J forward 1
+ r# f2 j! u% C$ g# L% U% Z6 D; K8 t set energy energy - 1
) m g5 F. E! a4 l4 Q2 |& G ]
0 K8 m+ ]# h- ?9 Dend
) }% b3 N6 M8 d! _; |$ d+ G$ ~6 Cto setup-patches# ^: J& P; b/ U$ I* O
ask patches [ set pcolor green ]7 G8 e' C% z; Q9 G9 W+ W/ N: W
end
: k5 [7 f% ~; I% q& f | Jto setup-turtles
" q: N4 n) H( C; Q0 e8 s/ `8 B- j- e create-turtles 100: b. e+ e# [1 X7 ?8 {
ask turtles [ setxy random-xcor random-ycor ]
$ l9 P" ]2 G+ q. Mend. [1 z- R+ L% o6 K. _
to eat-grass
/ I$ @/ C, n+ Y. g0 m ask turtles [+ _8 M' F6 b* P
if pcolor = green [
. X' C) v& w: S. }3 E$ `# |, l set pcolor black
/ z0 ]9 L% l! A8 i set energy (energy + 10)/ A5 r M6 K7 e" W; q
]
u5 b* Y7 X) j2 r* Q ifelse show-energy?' U* Y7 M! K/ ^/ L/ f. U
[ set label energy ]
! }4 G* N1 C5 }. {* |/ a [ set label "" ]1 B2 c; v0 g( A) n/ b; `
]
& u- h- p( X1 ?2 b3 O6 N7 }# w lend
: i' [) E1 g# e Ato reproduce q) F5 s5 c8 g7 F" r
ask turtles [ z5 O }1 ]9 m. P: @& ]
if energy > 50 [" ^- z3 H% f! q
set energy energy - 50
; u+ U k% z7 j9 f) x G: w' ]& P hatch 1 [ set energy 50 ]; S" t Q2 X# ?! {
]
g. z) ~& z* z0 B9 u. P2 S ]
2 D- b* G6 V. ]end
9 F& `+ A( t$ \% D" pto check-death8 h2 Z* T! x" a! M a
ask turtles [6 K6 o! J! b% B# g
if energy <= 0 [ die ]1 {2 N) X" a! e Y* h" M- w( Z
]& S: Z9 V6 E% n- ~* a
end
4 x/ O- d4 U. A4 x* Zto regrow-grass
1 F; T9 X$ {' e ask patches [
' P- @ Q4 i; t# d) q4 h0 h if random 100 < 3 [ set pcolor green ]2 m1 g3 a% |9 n. i4 X4 |4 F
], F/ Y' x' T9 Y) T5 }
end
# ~- D& k6 c9 Bto do-plots
9 h/ F5 q+ W) g1 e a2 N' _ set-current-plot "Totals"
) [% V" s) D, `6 L& C, X$ r set-current-plot-pen "turtles"
! k7 M) @5 s! q$ H1 U plot count turtles8 K6 n2 f. S0 h+ E8 z
set-current-plot-pen "grass"( O- m* u( r! f9 N/ S7 ~, U* r
plot count patches with [pcolor = green]% W0 L, k# W6 x) g" e8 d0 M/ I
end# T. Q8 ~% Z! E- o
可是运行时提示no such plot: "Totals"8 ?; J! C) x: p8 T6 t
error while observer running SET-CURRENT-PLOT! C1 w7 I% D9 n) X+ c' i2 e8 ^
called by procedure DO-PLOTS5 i% g3 k1 u! w! V6 W: j: y
called by procedure SETUP
1 z5 X! U% Y/ I1 R' R called by 按钮 'setup'
# M1 V' x- c% a求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
