我编的程序如下turtles-own [energy]/ ~& Q6 _4 o3 [! d8 w
to setup) y& }: |* _1 f# w
clear-all0 J9 L( I4 b& Y+ S2 ?
setup-patches$ b$ @ E- [3 h/ d! \
create-turtles 100
9 \2 X! G: e6 F* e. o do-plots& k8 e2 X/ |* Y; T# e
ask turtles [ setxy random-xcor random-ycor ]3 S$ g4 _. j# Q8 ~) l" m
end4 R( \* k% @/ ^
to go
+ U& [, Z3 U# X- J5 B move-turtles& }( S* k& H9 Z( G4 M( G, R7 ?
eat-grass( E$ b9 c7 b0 y
reproduce
4 \+ M- i5 @) R) Z6 V1 W7 C check-death$ V$ q! X* ]3 L$ g# `1 N
regrow-grass
6 m3 g. A9 l, W' S do-plots; R K& Y) m, k- E+ N
end: H7 E N1 [/ X% B/ y
to move-turtles
& z6 w, G) x; y* I ask turtles [; E) V R& F8 u
right random 360
! F( H3 B" C. B0 a# b8 ^9 h0 u forward 1; @4 |, B/ S' C9 g* A \
set energy energy - 1
' g; K3 I) r4 Y ]
! P# F9 A4 }! g: }end
, K4 d' E2 I' y2 jto setup-patches8 D2 L" g4 D$ w4 Q
ask patches [ set pcolor green ]$ j2 U" b- ?9 W" ~5 ?; ?- S& [
end1 w3 ` p5 u- C' B0 [
to setup-turtles) X r2 ?2 z2 M V/ i- x
create-turtles 100
7 e5 C9 `/ q4 A! {3 O \ ask turtles [ setxy random-xcor random-ycor ]/ Y& ^: t; ^5 V+ C1 R: ~
end
/ H. u0 I4 Z% Wto eat-grass9 y2 S+ t% @! w* w% U, p$ z
ask turtles [
8 t3 q: a& k9 P( W z if pcolor = green [5 o! [+ x* j8 f' E/ { C7 i) E- h, r
set pcolor black% x! Z' [! Q$ G3 j# A
set energy (energy + 10)% \ `% j' a, _& y* H2 \8 K
]
- ]$ I9 D& \( Z) H- x% l* x ifelse show-energy?
U. J' m3 e% p$ q7 Z [ set label energy ]8 h! l- t, R5 t
[ set label "" ]: _) I3 h/ V! B0 e- U) h
]; @! F1 v I V" M
end
# |& E! k0 z$ L" }5 Hto reproduce
0 T5 F! m$ r: T' K6 R ask turtles [! j p2 s; r, q% N$ V+ y- F, @
if energy > 50 [
5 k; S# E6 M$ u& K& }; ?% S! ^ e, F set energy energy - 50) W8 ?7 i1 e6 T2 n1 p
hatch 1 [ set energy 50 ]2 ]3 w# }. ?2 B: q( t- ?4 X5 V
]: |+ v. K. S( |' Z$ M3 z
]" K# u/ E8 ?; |; @- P/ D4 c, h
end5 ~; X- o$ w. u& G& S
to check-death% s( x$ z7 v- \" [5 X4 j
ask turtles [1 w+ @: `7 R' g- C
if energy <= 0 [ die ], b0 J5 g1 a& O
]
7 w! {$ X: I J$ T6 T, Fend
0 N8 n! x7 M( M, C$ Oto regrow-grass
; j8 ?& ]& c, w8 v5 ~ ask patches [
, j' S; l0 U0 m if random 100 < 3 [ set pcolor green ]
$ M0 O. S1 Z) X. |% _3 s ]
, r' |' W* Z/ xend
) E( j3 x; R/ Uto do-plots
) f2 P7 H% q5 u8 b3 v p set-current-plot "Totals"
% `! a& _4 X. \' Q8 z set-current-plot-pen "turtles"
/ l/ k. c6 f" |3 J plot count turtles L- m, B/ c: A1 A- z+ [( m4 W
set-current-plot-pen "grass", r1 R5 ^+ Q* e- c) I, A% q
plot count patches with [pcolor = green]! s" f: b& [/ e2 |4 t
end
5 W0 P" _8 G1 u& d( X可是运行时提示no such plot: "Totals"
I. H, I( ]7 uerror while observer running SET-CURRENT-PLOT
6 A |& r' d' j& ] called by procedure DO-PLOTS
9 U z$ j7 f' ]" T( ]$ s9 M0 u% U called by procedure SETUP
- ~: @; S8 X4 m6 H$ ?. v called by 按钮 'setup'$ i8 k' M6 e& Y8 j& F1 T
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
