我编的程序如下turtles-own [energy]8 q: n; X& o" ~" H* x
to setup
1 ?8 ~7 G6 [$ c- @6 E clear-all
+ S, W% h# |2 x; a setup-patches: j2 N- c$ b; |
create-turtles 100
) n) @5 O. a$ ` V' x8 r8 v do-plots
5 K1 H9 r+ G( [( x ask turtles [ setxy random-xcor random-ycor ]
; B1 Z2 G6 z* Jend% D2 B, [. N }7 w Z6 i( v
to go6 w$ P( e/ b2 @/ A" h e5 o4 Z
move-turtles
' f4 d9 J7 n' ^+ ^ eat-grass f S, ]; A4 b: O
reproduce
# y$ W5 X% n1 v9 J" f- \2 ` check-death
* O! z2 I" Y, b& H/ I regrow-grass$ W" q% p% W: V/ l" {/ O1 ^
do-plots. |% N+ ]+ R! d7 t8 m: r
end
* J/ n5 Y3 w$ H- {. x9 A ` Hto move-turtles
* X o/ n1 }4 P6 `4 Y ask turtles [+ f4 _ f f+ P& M, `. g
right random 3600 Y$ _4 o8 B: F- C
forward 1) e. q$ W( _ r% {4 W% Q5 W: I% E
set energy energy - 1% ^$ ]0 X" Z/ T0 A
]
# T2 R% E8 f" {$ A% xend
" J d; O' Z! C5 l6 Wto setup-patches$ @0 N+ ?; Q5 T* J
ask patches [ set pcolor green ]
0 F& A+ S2 g8 X8 E' c K) Y0 @end G O% {2 b5 a
to setup-turtles) S7 n& d' w% L5 A9 l! n& c$ {2 [
create-turtles 100/ g- }! s2 T3 j( Z$ U
ask turtles [ setxy random-xcor random-ycor ]
0 _& p% |: k7 ^end
6 S% Y h2 T6 v4 B' cto eat-grass' s) R. j6 `% S8 ]0 V% n) O% c8 a
ask turtles [" v" v6 z9 B4 a4 E3 Z( a& T
if pcolor = green [
# J4 ~6 j' q4 g& r7 {, B, z set pcolor black2 \( V. ]- J( v% N8 w
set energy (energy + 10)6 K* |+ I, S0 n/ g3 [# o
]7 W( x% ^6 e7 N3 l4 u4 |
ifelse show-energy?$ C- j2 r) z, y1 b
[ set label energy ]- A7 |2 v9 H# K- ^. t
[ set label "" ]& Q( m U9 m3 o) c X
]
; t6 n% k# \- `$ y9 A6 T. pend2 }4 B, P w, Z" d d
to reproduce# O: N9 c: I) |+ l1 n
ask turtles [5 \0 g# t/ B2 _
if energy > 50 [: R3 J! g) ^' y% Y) p
set energy energy - 50- V+ r4 N0 G5 ?; H; m. Y
hatch 1 [ set energy 50 ]
1 \5 {1 y' m; x# P/ ` ]# y e5 [' Z9 ^. [) f
], f0 q( b* g( R" B# d' r4 }) S
end; M- b3 ^$ g; f, C k) q
to check-death4 B- e1 d' k3 x& f: `
ask turtles [/ S# h& p& M" t% m9 H
if energy <= 0 [ die ], T7 k' A3 s6 r. N
]- F* p n" K# c& j* o7 j6 O
end) e+ ]( T* z, [! l4 _. }0 ^
to regrow-grass
3 E: l" Q; \7 z( N& A' _, @! {, p ask patches [0 C( `# d- y) b' @' g
if random 100 < 3 [ set pcolor green ]
' Q, g6 i7 G8 a4 D! M m0 l ]2 z) ^3 |4 I% y- @" c
end
$ i3 X8 o# n" Y0 B4 Pto do-plots
; N3 v5 S9 J' n set-current-plot "Totals"
4 [/ y9 ]: F4 o3 } set-current-plot-pen "turtles"7 d1 f* ^4 W1 T/ I; [9 x
plot count turtles* J1 L" E9 S7 S! m
set-current-plot-pen "grass"& ?3 b7 \6 u2 U& q* o
plot count patches with [pcolor = green]
S, F9 o/ A+ i& J% e: Q) Nend
4 {4 H- @! v6 ^5 Z" Q2 v可是运行时提示no such plot: "Totals"
' _! x8 }4 c# n2 werror while observer running SET-CURRENT-PLOT
8 w/ G5 }* N# W. G C8 W6 P4 w called by procedure DO-PLOTS: m7 e* z7 O# a# a- g
called by procedure SETUP
* P: Q9 H, l3 K( C* I called by 按钮 'setup'
: b. H* K2 s- n, q- ]求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
