我编的程序如下turtles-own [energy]
I2 x4 ]8 n' g* N& ?to setup. o2 {( i) H9 O! ?9 i
clear-all
9 ~3 S4 |7 y- C" m' H setup-patches) q0 q+ s6 f6 p9 M0 p
create-turtles 100
( F. D; @: A; d; E" Y. F/ S8 H do-plots* h# C7 b; M, S. J2 l6 |5 d
ask turtles [ setxy random-xcor random-ycor ]. h. Q2 @ _$ b3 \6 o. a/ R9 ~
end
% {7 ?( |5 l3 Z; l) w3 X& Ito go5 j" z9 y( n8 R8 p/ _! S
move-turtles
7 g. F6 D' F5 t+ {, }$ D eat-grass
! k+ x0 p- j! `( ~" M1 m5 p reproduce
" a2 X2 N+ T9 z4 @6 g$ U( ^ check-death
+ G2 n8 |6 ?# _/ | regrow-grass
0 E% ~& O2 h! y) h* t+ \ do-plots
( P3 {4 K( Y! g+ B' \! ^. iend
3 s4 f3 p) l1 q* [, t Hto move-turtles
! E n9 W' Q; Y3 @ ^9 o/ a ask turtles [) n+ P( n" J0 G3 K! [
right random 360. W w' d; e/ X
forward 1; m9 o$ i" E- q( ]: ~) a3 f( W
set energy energy - 1 r8 Y$ P0 E" m" A" r, k2 V) `
]* B1 K, h% P5 g: f& V) X+ B
end }' G2 C7 g9 h* ?, P1 \
to setup-patches8 W$ P+ O1 s* t9 o% c% U
ask patches [ set pcolor green ]
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to setup-turtles- K z6 J7 q/ N# ?$ l/ d0 B
create-turtles 100
% `; b" P4 [0 b( L ask turtles [ setxy random-xcor random-ycor ] T: J$ S' `1 q) O6 V N" f
end
; L& W* Y G5 j2 e# e! f: kto eat-grass
" z. d/ E- a/ h9 m- v8 _ ask turtles [) x" g4 E7 G+ Y) }0 O8 S- b
if pcolor = green [
9 a$ e, W+ v- C- I set pcolor black
+ H" ^! O$ y5 y* p4 v, [& E6 r set energy (energy + 10)
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ifelse show-energy?
1 ^9 C5 \" S7 S) M [ set label energy ]
5 r1 [4 G+ u; _ O' e$ J [ set label "" ]2 Q) {. R- P$ Y. v4 B; g% `
]( C! j+ q2 R& u' g
end8 d- r7 C; V* d" h: E5 T; T; i U
to reproduce
4 [+ |$ O& Y5 i( g' C ask turtles [* ~& V2 V( u/ m* f9 T* J
if energy > 50 [
, ~& I& u' B' X% o/ Z* w set energy energy - 50
; M3 a0 K w1 L9 W# X5 D$ D hatch 1 [ set energy 50 ]
+ F7 Q5 ]; h5 \9 Z3 F; _ ]
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end
' A" J8 H: ]! g7 H% P$ ^to check-death) [" K2 M& h ]( X
ask turtles [3 o& M0 H; a7 H
if energy <= 0 [ die ]
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end+ d, q) X: m9 E g7 \2 A. x
to regrow-grass" c9 `5 w! q) G7 o
ask patches [4 y# G9 d/ P) I0 y
if random 100 < 3 [ set pcolor green ]) T! V# }, u' Y1 r$ F- A! F1 b
]
! ?: |* y0 ]( L8 X" cend" A! j6 Q u" c! a8 B4 A
to do-plots6 `. u/ z6 c: n9 ~! H
set-current-plot "Totals"7 Q. e1 K$ \4 R) C
set-current-plot-pen "turtles"
/ p5 w, C! P7 F0 G' u plot count turtles$ A0 u0 V3 g9 D3 n4 s% e& H3 C
set-current-plot-pen "grass"
* Q: q* A1 M! ]) ~3 V) W% B& U0 z" X1 F plot count patches with [pcolor = green]
1 R) s- j3 w+ C1 {end) Q4 r% _; @4 P$ v- c& P
可是运行时提示no such plot: "Totals"+ z b+ ?5 C$ c; D
error while observer running SET-CURRENT-PLOT7 b, o. M% ?6 |' S5 E: V( c7 c
called by procedure DO-PLOTS+ Z8 c6 x& m+ V
called by procedure SETUP0 K- J$ P$ q) T; ?: r% r
called by 按钮 'setup'
8 u3 w$ ]) ]: `8 o$ e# S求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
