我编的程序如下turtles-own [energy] F, x) K- v f4 l7 j$ q
to setup7 }* F7 g% O# u- R: F8 f
clear-all
+ h2 b. u, {' b- N' \0 k setup-patches9 A& e9 x* a& a6 Y: ~5 A' Y
create-turtles 100
+ b# _: a2 V! b, K5 R9 ]3 D) } do-plots S) D4 y4 I" y" i* q. h% ^
ask turtles [ setxy random-xcor random-ycor ]
. O) J& p% V% F7 y7 X/ o9 M" Vend
; ?9 x9 C! z* T @. m& a1 F, Sto go
. v- [- g* l8 s8 h! l Y move-turtles& A6 L8 P2 a2 s; b
eat-grass
* a( p% j6 p) D8 N' a" s reproduce# @4 Z8 O3 Y% L+ L8 m
check-death6 V1 n9 R! O5 p" t, }; R; J
regrow-grass. `2 c/ w J6 \. e% E2 a8 T
do-plots
( _5 T4 a- K+ N- W! Vend
9 ~' ?2 D* E. \! q9 Cto move-turtles3 D9 s* q1 Z% I' ^! p
ask turtles [" l F+ q2 ]! `# N. h" s
right random 360
' ?+ r$ L' G l- j; y# V forward 14 K) q) V# g" e- A
set energy energy - 1 `1 l9 Z; b! _! A y; M
]" W" F+ J& g, y( D6 ]. w/ o! Z
end( L9 L0 j, _) e5 P- |
to setup-patches4 j# o/ j8 H9 r/ \0 B8 w! S1 f3 S8 |
ask patches [ set pcolor green ]9 `$ W1 `* N) i% A! g. v0 M; n2 G8 K
end
! x) @ ^) f/ yto setup-turtles9 |# |0 \ g; A5 }7 i
create-turtles 1000 w: q( T7 v8 C3 D
ask turtles [ setxy random-xcor random-ycor ]
/ M1 B5 ~1 j8 U! B0 }* i8 T8 `end' v! @0 r/ \) L# A/ z3 [
to eat-grass
) S2 i/ @ k6 ^4 U; t ask turtles [
( Q5 y ] m- H4 P% A/ F if pcolor = green [! N! \' ?8 |2 f1 a) O% n& C5 f
set pcolor black
& a+ @3 Z0 p4 e; U set energy (energy + 10)
) \: ]. [* t) l t ]9 X' W* b. P; L/ Q
ifelse show-energy?! B6 _7 z; k X2 X
[ set label energy ]: D# J0 w$ o1 b3 j5 H! ]
[ set label "" ]
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end
% q$ f. D( S! l) e" E+ Yto reproduce [: l# @- u8 i2 P$ K* h Z
ask turtles [; e/ t, n; X4 ~, j# h
if energy > 50 [
5 I! E* P4 [7 ~ S, o set energy energy - 50: d, f! f3 _2 }! ]! @) y
hatch 1 [ set energy 50 ]
K- f# M: M. M) a, z$ ^: {' w ]+ e& N6 Z- l* Z+ s9 r+ M6 E o
]
; |: X- W5 h4 \& s, P. ?7 O# `end. I# U! S8 a5 P1 i) V
to check-death1 }9 K$ e, c7 `# G8 ?, s
ask turtles [8 E; I- y3 u- E! \: G3 o
if energy <= 0 [ die ], g" O5 W7 Z+ k* T8 \# Z/ t4 W
], }( q, c/ Z1 [# n( B! K
end- P7 L6 S) q8 f; `
to regrow-grass. y x5 `# M5 W9 X+ ~
ask patches [, z$ L C; Z& a! H9 w
if random 100 < 3 [ set pcolor green ]8 S0 L q& c7 s G e. t/ u+ z+ R
] P$ H( b7 M& H) m& H
end3 G2 W5 w% L4 ]% s5 a d
to do-plots* `' B5 j: ?! j4 k) x2 U0 N7 m8 i
set-current-plot "Totals"
: z% g8 M$ J- O' G/ j4 t set-current-plot-pen "turtles"
. R; W8 Z, z6 B( J plot count turtles
+ p6 Z& f' [& X. O, } set-current-plot-pen "grass"
/ j0 k( y2 e3 G plot count patches with [pcolor = green]+ w/ c3 X# b" ] w+ x9 Z
end
$ A4 \5 B6 y+ [" [2 ^: E+ `可是运行时提示no such plot: "Totals"
: d1 s3 _6 p; C! Cerror while observer running SET-CURRENT-PLOT+ y1 i5 h% l! ?. E
called by procedure DO-PLOTS! w: }" z: J/ q' I
called by procedure SETUP
$ X4 w+ D, h% a called by 按钮 'setup'& F* Q3 t, S4 f' \ n H6 }: x1 ]4 ~
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
