我编的程序如下turtles-own [energy]
) C& |2 G3 G7 a/ G; W( B- }to setup/ Y7 R: o$ ?1 W! r8 }7 u3 J
clear-all
8 h# A2 O+ W- P: @" b) { setup-patches8 v1 _' w, B( ?# @" k
create-turtles 100) _! b3 O/ K* N1 w) \
do-plots
; t- B1 `5 e) b I0 z ask turtles [ setxy random-xcor random-ycor ]
% T' p' M) K: ] F0 k/ Z. I( E( Pend6 R; D4 b' @/ ?) o- o! _% q3 ?
to go
) \: O. m# T. o, u5 {2 l6 m. Q move-turtles
# C3 y) r2 e$ ~2 Y/ z; e eat-grass
* }& [' n1 }7 [- U C& L! J reproduce
9 P l; _% n6 w/ Z- q% X check-death
; M6 h. J* J3 Z2 d regrow-grass( B( n7 h$ L- Q: X! k) S6 w. S* ~ h
do-plots
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to move-turtles- m, R8 |$ h' H! }. W2 |
ask turtles [
( m7 e8 r: Z% @6 x" f r right random 360
1 Y) [( m6 \" ~2 a4 {8 @4 t forward 1
! p$ ~! ]& i, `. } set energy energy - 1
6 ]/ ~# U- E& N1 k ]. ~; Z3 L( E/ `; f, k
end
( Y7 {& c1 a8 E8 s! f1 Fto setup-patches. F. n5 y- b6 z+ D3 [- m c5 x
ask patches [ set pcolor green ]
0 q; f8 V9 G* w% iend
/ O+ o# s! N' s2 ito setup-turtles$ z k+ l, N* N" y% Y
create-turtles 100
) n3 k( v+ n5 M; T ask turtles [ setxy random-xcor random-ycor ]
3 P6 t9 s) {3 o' O$ R4 oend# |) @ _/ s) l2 Q3 W; }
to eat-grass
( h% u3 f) }& n- j ask turtles [
9 A `& n! }3 j8 R: g( ^ if pcolor = green [# S. V* C w2 z+ ]
set pcolor black
+ ]6 `# F0 J( T$ k5 d set energy (energy + 10)$ ~" i$ d: ]! u, T, h O
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ifelse show-energy?$ ^, X2 i" X1 S q# j+ P
[ set label energy ]
3 |8 O% @$ K+ r. A [ set label "" ]9 M( a( e# F r T8 H
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end
, P; n5 c2 q* X( [to reproduce: X s* H! F% l& n/ y8 Z1 \
ask turtles [- h( L @9 k0 s( w c0 |; x$ w
if energy > 50 [
' G4 d5 t# l) g. u% B2 l& p set energy energy - 50+ V5 j+ f! M& \* o4 @
hatch 1 [ set energy 50 ], `2 ^- j* ~2 o# R% N6 ^
]
3 q, n3 t. O0 ` ]
) Q' \* L2 k* M2 Iend
, ?6 M! W. q1 d1 U9 d. w5 r! f0 ]to check-death( R1 A: \2 Q! n' V
ask turtles [% x' E x3 P d5 F
if energy <= 0 [ die ]
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end$ d. |5 e7 |6 A! L8 s; a9 Z8 c4 k
to regrow-grass
7 v4 _2 T8 {- H' E. L) ^8 g ask patches [" D3 @: D" @, s3 E% Q N
if random 100 < 3 [ set pcolor green ]
2 O; b/ l" i# Y: _! Z3 `/ E; | N ]
1 c3 ]7 K7 I4 N9 P: v8 x2 Bend8 G" J, ?4 [+ h; A0 g3 a
to do-plots, o0 i% O9 Q3 T. R2 |
set-current-plot "Totals"
- d7 u( r0 k7 E9 V% k: {5 S8 H set-current-plot-pen "turtles". _9 p4 n) k# q
plot count turtles1 z1 Z/ ]; J7 G* @% Q
set-current-plot-pen "grass"! T& o1 ?; k. w. r" g
plot count patches with [pcolor = green]
# @$ e+ C7 ~ o0 A& pend7 A+ n, v4 {5 |% g, D
可是运行时提示no such plot: "Totals"
7 @3 ?* G* E1 G/ }0 terror while observer running SET-CURRENT-PLOT+ Z. {% i8 O& Y* c4 U& \& o
called by procedure DO-PLOTS
o/ q3 r! L4 E. s8 R) x6 W. R( ? called by procedure SETUP
( ?5 n/ ~2 @+ \: T5 A# S5 W9 o4 X8 } called by 按钮 'setup'' B* M, v: B6 ^9 c B8 e; y
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
