我编的程序如下turtles-own [energy]
" V* V$ ?$ ?" f# I4 a) Dto setup- _6 _3 C7 c1 g* C
clear-all
1 G/ y r0 Y8 u0 Z8 F. r setup-patches( T5 N6 e/ {$ p' M( i* s% Y& w% l0 |' t
create-turtles 100
: ]# N6 d( D$ `! }$ M; I do-plots
( B5 k7 S* M: h( y/ a! W2 C ask turtles [ setxy random-xcor random-ycor ]
$ t4 r+ r# u0 s4 b" ^end( ~, C0 j$ a1 ^. n! r9 o
to go
/ J6 L' V0 f6 J! J move-turtles
4 i: D! B8 V. U) w2 b5 W eat-grass1 s7 e h" f* D4 S3 _- c
reproduce
. g* X. v! S0 c) X# P check-death
8 q" l: ^" k) S9 H) p& K regrow-grass' e" |# E- c8 n1 U: [+ R+ x
do-plots X( ^8 @+ m4 @
end
, p( @% {: w7 n: y8 F8 I m' l4 a3 Zto move-turtles
! T+ r m+ i/ P ask turtles [
$ u% o" ]6 [# v4 b0 R right random 3609 a6 Y6 _( H# ~) z+ f# l
forward 1
4 r. |% t6 T \, Q set energy energy - 1
9 z i- O- e3 R, k ]
* D% D% \$ }1 U) _6 {4 O8 gend$ n: {! e) |; c! z2 @: | f
to setup-patches
: A/ }/ q1 O4 k! M ask patches [ set pcolor green ]
% r3 P( v) ]' S% I6 _end* \% N q+ h' L0 w% `- w, k, k" t
to setup-turtles3 r% U; [; n0 O* N, @, c$ K
create-turtles 100
9 ?4 l. I. S2 @; r$ k8 d5 o2 K ask turtles [ setxy random-xcor random-ycor ]0 N- u) B) o: I$ z# p+ `) o- E: }3 A9 p
end
0 b6 W! z2 H6 c' l! i) Pto eat-grass/ a1 \# a/ O: R4 ]8 W3 n
ask turtles [; l! h Y" l9 ~8 K7 R
if pcolor = green [+ d! t3 b, A$ _3 G- o+ g2 b
set pcolor black! \+ `1 l! n& _' r$ |
set energy (energy + 10)4 p7 h' c- \, c g
]
. Q; K) _; e$ v6 n9 S ifelse show-energy?
/ S# [8 l! ] D5 w0 @ [ set label energy ]
; x- x: @( b4 s [ set label "" ]/ k, v9 U2 S k; v$ A+ }
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end* O! p- r% _$ i6 G4 ]
to reproduce5 m2 W8 E3 i) G( ^9 k f6 O6 m/ d
ask turtles [
' F6 h1 {$ a6 _! G8 b; h if energy > 50 [" P4 X% e* N' a3 R+ q9 \
set energy energy - 50, c; Q5 \9 L7 K/ u
hatch 1 [ set energy 50 ]
7 J) p, u8 V i9 ^1 E ]
( X( r! d: w! f, z o- d; I8 E# f ]
+ A, w! O' _0 n# send
, Z* S0 V: X' W/ Eto check-death
8 ^& F1 ]4 }4 z! T ask turtles [
* n" i! p a$ K3 ? if energy <= 0 [ die ]
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end" E4 J: a8 ~9 s0 e
to regrow-grass
5 I( S8 H+ _0 h- \5 I2 q4 | ask patches [
* K% O+ x( J7 R7 G if random 100 < 3 [ set pcolor green ]
: H- }6 F$ P9 ?) R ]
6 x0 Z: P/ K: `$ E: |. yend
6 z! h6 P6 o3 a8 D/ _2 {to do-plots
! a ]5 h- q3 J$ N5 |% V* G set-current-plot "Totals"$ m4 {+ z" j! Y [$ R
set-current-plot-pen "turtles"
8 u' J4 M7 q, ~1 n) U plot count turtles/ `4 D/ f# `# Z5 E) L3 ^9 K
set-current-plot-pen "grass"
7 |) @7 }4 G4 `& h$ j& j plot count patches with [pcolor = green]
2 h. m( D! h- S( ]) lend# v: X9 _2 l, x% P- z; U
可是运行时提示no such plot: "Totals"
! [- s5 D6 Y6 C" o2 d6 q; H8 ?. \9 h- ferror while observer running SET-CURRENT-PLOT7 ?8 B1 ^: w6 ^/ r
called by procedure DO-PLOTS
8 ^* X$ k7 r% j; A4 m called by procedure SETUP
3 N9 N: D$ F- D% K9 O0 a# j called by 按钮 'setup', s. h# _7 n* N9 }. C- n; ` V
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
