我编的程序如下turtles-own [energy]) e8 Y+ s# ~) i% f7 }3 l; |
to setup' a# }1 @: g; O* I" `6 r3 H
clear-all: I; t# U9 N6 @5 H6 ~" }
setup-patches
: s7 a7 R4 D6 Z create-turtles 100. ?- ^; q% ]0 T$ t+ }9 I# ?
do-plots
+ `, t4 i1 b F ask turtles [ setxy random-xcor random-ycor ]
' N1 h# S1 X+ ~8 H5 F3 \end
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move-turtles
; a4 x2 N2 o: I- r$ D7 x% E eat-grass# e+ h! C0 S, m) N0 B" t6 S
reproduce: s/ ^ M9 W) n( ~8 K4 z
check-death/ I/ c' R5 R! s" X
regrow-grass
3 o0 f/ D4 s# S0 e do-plots& K" l# {" t- I8 A7 F: l9 I0 D
end
" F b+ }* \% L" \to move-turtles6 K( V3 q0 _& P- U. `/ w
ask turtles [' i$ p8 q0 ~# X6 b1 j0 m0 k" o5 F
right random 360' q& n9 P4 P. ~& f& O7 ^
forward 1
2 b: T; P# d: t3 ~ set energy energy - 1
+ i( u( g& h: J* [' B% ` ]& d- T. t2 q5 Y( b* Y6 w
end$ i8 p* X5 s) J; f- E
to setup-patches( p$ u6 [1 y/ I, H: _
ask patches [ set pcolor green ]
) Y- F2 J" a1 a% d; f. cend' ?) t. W) \- r" X
to setup-turtles/ `1 v3 e: l4 O$ K* z$ g
create-turtles 100
6 `1 G( A1 k! i/ D7 o! U ask turtles [ setxy random-xcor random-ycor ]
7 @% r4 Y. B: \# I4 K1 `end5 w! s& M1 a0 r) F/ O
to eat-grass# n& p" Q, V% @$ Y! v& p( C% d
ask turtles [3 g! D5 P! Z6 ~) e) _: l
if pcolor = green [
# ~9 ^1 S# c5 Q/ H2 S set pcolor black5 }; T0 U8 R6 h" U; [% E& V2 b$ m# {
set energy (energy + 10)" j: E$ K$ j' d; b- |
]3 E7 E) W) n! d; t1 z2 w1 h+ s
ifelse show-energy?8 J# V5 s) S# t' R
[ set label energy ]
. G0 a' B! ?$ o% K* z: p: M# P [ set label "" ]
( ^% N( V: v( U/ x5 T2 w( p5 q ]
6 Q5 P+ W0 B8 F7 X+ H. n' Jend( [7 d+ T, f% ?, J6 N6 U9 r
to reproduce
) w0 ~# f$ S, {. O, s: l ask turtles [
" C6 m1 D' y _) r$ y9 ` if energy > 50 [3 }, a4 l, Q: B+ h
set energy energy - 50
) X1 r2 G1 v" |5 j9 g hatch 1 [ set energy 50 ]
* D0 o! @8 U$ K$ [% E! c$ D! A6 ? ]
' {* h& U; d. ?: k k ]
6 l* b& D5 b' R' x8 ^" O7 yend. c# S8 t! Q) }
to check-death
9 b5 }: z1 a7 Q5 w ask turtles [
4 ~6 e( v, X) e if energy <= 0 [ die ]
! E. m% a- q6 h; _- F( c ]
8 L( ]( ~2 i, C5 f/ H* Oend( y7 h+ o8 [2 f3 v& R: r7 L$ m
to regrow-grass* T+ {! g2 B+ D5 a8 [' }
ask patches [; B- C. o7 f; s5 V7 H
if random 100 < 3 [ set pcolor green ]3 ~- p% Z( G( G* n- e
]/ H% h, G$ t6 h; x% F, g
end% r3 d1 R; a8 T% H7 |0 d
to do-plots# X+ c- x% s, }! j4 p
set-current-plot "Totals"
5 J8 S' t' A: i( n' w set-current-plot-pen "turtles"
0 @& Q( W6 {# r# t/ O( r plot count turtles! R) Z9 Z$ d3 m: h% i% {
set-current-plot-pen "grass"8 s' M+ \) K) b$ ^. ~/ |* A; {
plot count patches with [pcolor = green]: A* o# Y1 f& j( A* H" |, h
end* P& h2 C5 R2 q
可是运行时提示no such plot: "Totals". e7 J8 w& Y& P2 V- F
error while observer running SET-CURRENT-PLOT1 v5 D6 e. ~3 Z; K$ r2 i( u
called by procedure DO-PLOTS3 U: ?% \9 R0 S) g( L: C6 q/ v6 ~
called by procedure SETUP
* i0 V" r* O2 K6 |. g called by 按钮 'setup'
7 f) E5 k4 ~- X9 r, }求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
