我编的程序如下turtles-own [energy]
( t" K: P9 D2 X7 wto setup' ]* C* |$ t$ H# G7 P0 V
clear-all
5 y1 z; R S4 W' y+ \ setup-patches& x! L: K' W/ p, R+ ~) K* i
create-turtles 100 v7 t. a, T9 |
do-plots+ f8 i9 q3 B; B
ask turtles [ setxy random-xcor random-ycor ]. Z/ e( f4 K& q* L
end' a" s$ Y' o8 G# w+ F2 ?% h7 f
to go% z7 R. v1 c+ n3 r; \1 l3 D* ^# s
move-turtles
1 t) ^- U0 a+ L; I; U eat-grass
0 K5 t8 `- g+ f( U1 H$ ^ reproduce
' C! E% }! x9 R check-death2 J3 v8 w. W! M8 u/ n$ |7 i. B* ?
regrow-grass
v' I$ c M7 p$ k# j do-plots
' D/ ?( u1 n5 M- Uend
' u- h G. E/ I' ]% Nto move-turtles
. H# ]* K$ E4 b ask turtles [. @$ G, X) x4 \1 G% @
right random 360
* K1 j( @8 l @+ m ] forward 1: e* k- n. i! Q+ ?& s
set energy energy - 19 e9 e0 S. i3 ^, U# b1 A
]
) C% g! a% W% A: Pend3 `" }7 Q* x; Z _9 `& W
to setup-patches" e" R$ x$ Z4 j2 D3 A
ask patches [ set pcolor green ]
$ s% F8 r% S7 }! I1 L- Y0 l4 ^end
- Y( o) o9 s8 N+ e# Q8 e" jto setup-turtles
' L0 E1 h3 }" S' j1 n* i; v" } create-turtles 100
$ j( ~$ C. }3 ]# C( D ask turtles [ setxy random-xcor random-ycor ]
+ S" G% n* T0 X- x3 K) R* c4 `end V! B4 k. Q' E7 ^( k
to eat-grass
) t, F! I6 I; s1 W ask turtles [1 k0 U5 N, J/ F2 |
if pcolor = green [
: V9 u8 D* X4 G+ }% t# B, k set pcolor black
4 }- G8 f6 Q& B, ?) E; ^, G set energy (energy + 10)0 T X8 }! \3 R6 A3 J
]
0 [" j8 @1 G. r4 ? ifelse show-energy?8 p, o9 k$ f J0 D6 p9 V& e
[ set label energy ]
) N4 X9 x3 T. ?0 v [ set label "" ]
7 y! }. P" w' `1 b! ]) V ]1 J" u2 ~( [0 H5 ]$ P! Y
end
8 @. @3 v0 F, `: F+ W1 K% O- Vto reproduce2 B9 k* ^- V( c! T2 m
ask turtles [' H+ a4 M1 G4 U3 N
if energy > 50 [& I& T$ ~6 k6 Q6 D. j3 F( y- @
set energy energy - 500 a' w3 a" P- M& X; Y y$ T
hatch 1 [ set energy 50 ]
8 @) x7 Q& y B; @$ z ]
- D. \# _3 c7 F6 f' ~3 R8 s6 } ]2 }8 F Q8 G0 c. l; V
end
3 b% G, s1 Z/ Z; @: {, {% x7 Fto check-death9 r9 A* _# |8 p e
ask turtles [/ f: ]6 Y/ c' \% B- S
if energy <= 0 [ die ]2 f6 i4 N7 a, U. F: C
]
8 n. f" W, P0 o- } k$ I9 Pend
# r2 R( _$ ?! X: s, X9 m0 C& ]) kto regrow-grass, J- M' O4 Y5 `) |/ F. X
ask patches [
+ |8 u. y/ L) G! k3 L& D' T if random 100 < 3 [ set pcolor green ]0 x- g' S7 L- u a* Q% t9 E
]1 S1 P: L5 [* c8 z+ k/ x% X' H
end' R6 v( i, X e4 q2 r* ^3 T N0 U- p
to do-plots
4 H5 q$ a! u4 K% Z' |7 h set-current-plot "Totals"
) L! f: g6 p. P# u set-current-plot-pen "turtles"
- [: j: p+ [$ P# u plot count turtles
S" Z1 J6 P: n' Y' o+ P set-current-plot-pen "grass"
& @# O. v# |: g: x! Q8 ^ plot count patches with [pcolor = green]
0 Q# o: P" M$ n3 H; ?; [) nend+ q4 c3 N2 B1 ?1 h# O* w6 `( W7 U
可是运行时提示no such plot: "Totals"
+ U/ L) p( M" R) L, x' W/ verror while observer running SET-CURRENT-PLOT2 c- j) @- K9 V6 K
called by procedure DO-PLOTS3 k- t2 s# m: h7 j
called by procedure SETUP
! U* x. o: s# \* K1 q* k9 L called by 按钮 'setup'
& D* y& O: N% i/ D6 ?求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
