我编的程序如下turtles-own [energy]
9 g9 p) ]9 v1 s4 ~to setup
7 Z) I6 J1 W* a" o6 h7 W2 y clear-all d, T, Q9 W$ R( ?: }2 d
setup-patches6 B( l- b: n) o# a
create-turtles 100" k, ], P) ^! ~) \ D X
do-plots3 l# V( H/ o* g# n" H) p
ask turtles [ setxy random-xcor random-ycor ]+ z7 k% n5 O0 Y/ ~0 r# Z: _5 E
end
7 D# Z( U9 d0 n) i' K5 E. eto go
' ~! T. }" s5 ^ d move-turtles2 T# T3 o5 Y+ p2 b4 ~) j& a5 L
eat-grass
6 a' \! L1 e* H: ?4 V reproduce9 P; P" `) w* w0 f3 O* F
check-death( E) ^* t% r* W: v* y/ R
regrow-grass, ^( Y) u, W/ m! u! b* q
do-plots" w& u- }# u7 X
end# a# z: c }7 e R
to move-turtles
. n' ~( q& I9 X! H ask turtles [
! m \1 d! g s+ c$ w$ t+ q right random 360( {/ h2 E4 w6 d9 j. P
forward 1
: i; ^" ?8 X+ \7 i3 z* j4 i' s" ` set energy energy - 13 b: q' A) S% s' [8 h6 Y2 S
]7 @* A& g6 _: D- d8 Q
end
# d5 d2 L+ X( Bto setup-patches% r% o" W& n; i6 E3 V5 y
ask patches [ set pcolor green ]" |5 r% h3 I& f3 Q% z9 w4 n
end9 e7 P" R( ]0 o5 }- m. G
to setup-turtles
% B4 S; w( z) y( P create-turtles 100
9 o) E' {2 T. W$ p4 ^& Y ask turtles [ setxy random-xcor random-ycor ] ]7 x0 x- y5 T! l7 z
end/ G$ C4 N$ D$ g' U3 m# K( m
to eat-grass; `, t6 z; ^5 L0 \4 f: R4 W% f
ask turtles [7 M( o; l5 z) Q( o# Q0 [
if pcolor = green [
`3 ^4 F. v D0 e. b% ~9 D set pcolor black, m& `. ^' |# N3 r5 R( a' `
set energy (energy + 10)- ?; k+ @0 k: z6 ~% E7 ^5 s
]3 S* g: Z$ U2 { m# @$ Q
ifelse show-energy?
9 {. G1 L7 A. V1 H, g) O [ set label energy ]7 _* Z5 J- I% m$ E; m
[ set label "" ]' Q" i! V+ m g( R
]4 ^) _/ P/ c# ?9 q z
end& a/ p. I! C9 ?9 p
to reproduce
& n$ W8 u' p" Z7 k/ p( R! [ ask turtles [3 ^, }. t* ]% a+ q3 K9 R
if energy > 50 [
; h, h2 k1 y( R5 [6 b5 i set energy energy - 50
" X8 W, l: w6 R9 Q% r hatch 1 [ set energy 50 ]3 l. Y9 {' W" i( ~4 ^( t
]- y5 U& c) U- c/ O9 a1 S/ M" r
]% X' B' e; L) ^2 u
end
8 w1 S6 @! m# gto check-death
8 R* e0 [0 Z3 |2 f0 t7 | ask turtles [
/ Z8 A2 q, D' u: v if energy <= 0 [ die ]
. u) K6 M' \4 K& ^& p/ M- g/ w ]
0 y0 F, S1 i8 D# v9 a$ ~/ tend
M4 r8 [3 h) \7 Z' @to regrow-grass
$ c/ H& ]. f1 y8 {+ p& Z9 e% e ask patches [5 x+ M: z% e/ _0 l5 _6 M' s5 \% {
if random 100 < 3 [ set pcolor green ]
% P9 d* H6 }8 T+ O' Q* L) E3 T& Z1 k ]! a8 ~& I- L& e5 s/ i
end
1 K% u* R: h4 l2 C @to do-plots
) [3 }+ h& n2 q set-current-plot "Totals"
: ]% L# x1 K) M# R0 {1 O set-current-plot-pen "turtles"& i) K. l6 y0 W& }) _3 C) B/ R
plot count turtles
) c* a7 u% h1 O set-current-plot-pen "grass"
) J% d8 O$ V) ~7 X3 E plot count patches with [pcolor = green]
4 b& O1 F u" a( Vend
( l3 I% l8 d# O1 i4 e, N8 E5 a/ X: q可是运行时提示no such plot: "Totals"# {% y7 a: O1 _4 V0 _/ M* u
error while observer running SET-CURRENT-PLOT$ ]' ?' s; ~0 y8 e$ Z
called by procedure DO-PLOTS- l, j" W6 T. M( I X1 j- k
called by procedure SETUP3 }, b6 h/ a* |& v2 Y
called by 按钮 'setup': X$ A1 Q; X; {5 r
求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
