我编的程序如下turtles-own [energy]
5 e1 H: Q% C5 a! h9 K. hto setup6 O8 J- H/ X7 R: d# F9 P
clear-all$ _8 `4 y2 A# |1 J) l) I, }
setup-patches$ Q5 ?% W8 V" m( H8 A" b1 M3 A
create-turtles 100
4 s0 a) n# c! u; n do-plots2 q& z7 h$ v' V
ask turtles [ setxy random-xcor random-ycor ]( T1 q$ M( F8 v: T
end
+ ^2 e& n7 S9 U/ B7 E% ^to go
0 x# ~3 i2 k' R, o: |' h move-turtles( l& s' f' c) s- Z' i" e
eat-grass7 _2 N. w( x! a3 g2 c( j
reproduce
3 k @# T& `" h& E check-death! R& o$ M, i9 R% I* Q
regrow-grass# z1 T) \4 I( n7 @
do-plots- h7 N. q, a" Z9 p# R
end
: P/ |1 j& c0 wto move-turtles7 N& r) Z0 v' U1 @, _+ `
ask turtles [% |' s, t* o+ F" z( x! X
right random 360
" w& A3 `4 b3 @# A forward 1' B2 |: N3 J2 z
set energy energy - 15 ?4 Q3 F- |% M+ Z9 k
]7 O( p2 m/ o1 S p+ g2 w: e
end$ w/ k( Y% g! c9 e
to setup-patches% B3 x' [& q( D3 ~( F- m8 T! L
ask patches [ set pcolor green ]
- _4 r9 X5 m/ c1 |) Rend: T7 b' }7 R. n
to setup-turtles
7 j* d2 U. e% P: q create-turtles 1006 G2 w) J' q, O" }
ask turtles [ setxy random-xcor random-ycor ]
) ^; l5 A/ d9 i% J9 Dend
* y: n6 _1 w: `6 Dto eat-grass) m3 C1 h7 M7 I B" T8 Z1 m
ask turtles [
- D) S6 v2 F. o if pcolor = green [
" y" r8 G5 \4 m set pcolor black$ g8 w* T- t$ e0 v" f' d
set energy (energy + 10)5 w! H2 _! o `& W4 u
]+ |( s" y: u* B+ J6 C! p6 P. U
ifelse show-energy?
1 G q& x$ q* L* X0 H [ set label energy ]# W/ N0 M' N( K! D
[ set label "" ]; O" R' c# I& O+ M
]' a( `* R; b* t. Q2 x/ b
end
X( c G1 I Jto reproduce
" I# Y6 n6 t9 s4 a' t8 X ask turtles [
" w1 f# q7 V7 c9 z if energy > 50 [
9 n3 l: [8 T8 t* M7 \+ k set energy energy - 50; U; d& ^4 \. A
hatch 1 [ set energy 50 ]
, v5 a' s% H; W/ O6 [' W* [ ]* h5 W9 l& ~; [$ c, |' D* Q
]
. n9 a3 O9 {9 O2 Nend
/ F1 p2 B0 @0 U" `* Gto check-death% L9 H& r0 E6 x* D9 N
ask turtles [
( E' x+ m1 \* l. {- H4 H" e6 {& M if energy <= 0 [ die ]
! m6 W7 a7 a& m; m k& J ]$ b8 y2 X' z. x$ L
end
/ f( d) f% A- e4 u' b" A4 [' Ato regrow-grass
# v& P8 m0 G t8 ]2 a* S ask patches [- P) i; X/ b* W( a7 _# x7 N
if random 100 < 3 [ set pcolor green ]
1 C1 \' [3 H( d) i ]# k. s& S2 l% Y7 S f) H
end
; l: ?8 U: n/ \7 ~! Tto do-plots2 |/ P Z2 U% Q* F, d1 E
set-current-plot "Totals"8 D6 @, b. u! o9 L) g
set-current-plot-pen "turtles"% }5 \; d0 N5 q, ~! e1 P9 A
plot count turtles
, x! ?) [( @/ V+ s( H/ t set-current-plot-pen "grass"
3 Q+ g+ V, h) h2 E( [: F/ }6 R plot count patches with [pcolor = green]8 ^0 b% a+ ~, }5 o y
end
* |( Q7 A( q; @8 S* F: _可是运行时提示no such plot: "Totals"
' c+ B! r. b8 W6 M2 l9 K) h: U1 rerror while observer running SET-CURRENT-PLOT+ w4 S4 r8 Z4 O- D9 Z
called by procedure DO-PLOTS$ E. a: k( Q b" b3 ?/ B
called by procedure SETUP
- N) S: O2 ?4 D4 ^7 E$ F called by 按钮 'setup'
# c7 {9 N; }) c求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
