我编的程序如下turtles-own [energy]) @. t. t1 P9 d4 d- i) i
to setup& \' h* J# Q6 F
clear-all* R& a3 f* a s/ ]/ ]. x4 ]; I
setup-patches, t; |+ _- t4 y0 v! R* h
create-turtles 100
, D( Y- o7 K# b, w2 a, e; n do-plots
1 b1 \% x: d8 [1 ` ask turtles [ setxy random-xcor random-ycor ]
1 v1 T {9 o+ Cend/ X2 H7 Q; A: q2 ~
to go
5 t& E7 L4 E6 N7 l6 E- s3 H move-turtles0 h2 `4 n/ O- ~5 Y+ N' \9 u3 p
eat-grass* ?6 { u8 @' N; P/ A- n
reproduce
- h( w6 l! \3 L* ?7 l5 P check-death! E" j; ]- N: w0 q4 h
regrow-grass
5 N1 X1 m" U! o5 K' E. l3 ] do-plots2 p, q8 N S: P0 h& [
end: u0 w* c. F8 t" f2 M" ]9 L6 W
to move-turtles
9 l, T3 J/ }- R: G, F' J ask turtles [. j# Y/ x, Q) f* P9 i! t; m
right random 3601 d7 a+ M( W: t# L
forward 1% l2 c+ c" ^/ P: |7 A J! e
set energy energy - 19 k$ F" Q1 s. z& n2 K" Z* a
]$ p9 f) n: F% Q! @ M
end t6 q/ u1 g/ U9 Y- i
to setup-patches
; N r, Q- j3 \' ?7 y2 }: n ask patches [ set pcolor green ]5 \- ^% T; m1 Y/ @/ }/ Y# l
end
& b, a; h$ x2 ]% Zto setup-turtles, q3 c7 ^5 b4 @" [" B3 y- M4 z7 x
create-turtles 100! n# S7 {7 P9 w1 M9 d
ask turtles [ setxy random-xcor random-ycor ]$ Q! x8 m+ Q; E+ m9 c1 w
end, F4 b9 P( W- Z6 _7 A9 R6 q
to eat-grass7 U& s! i! Y; A+ ^$ p
ask turtles [
$ f- o# B4 ^& T if pcolor = green [2 X! d' s* P+ o' y4 }; u6 H
set pcolor black
0 K' u& y2 v8 }6 D4 U set energy (energy + 10)9 V6 v5 X/ N$ c# W0 K/ K' Z
]
1 U+ e3 b Y/ E/ b3 F, O" y ifelse show-energy?
' _ B; ?! K) D5 J# ?; ~# z [ set label energy ]9 j6 c; }/ o+ o# N
[ set label "" ]9 [9 X( {3 N0 b; \: C
]
; ]/ I* r0 b$ U" m8 A6 send- W# O r( I& c% I
to reproduce5 [1 t1 K5 e' F, J/ `' Q6 \
ask turtles [1 V% m! Y$ T) w4 G# g W
if energy > 50 [6 K* r7 d% F; x
set energy energy - 50
& J8 \. }6 {$ |/ |% U* z hatch 1 [ set energy 50 ]8 e( n* k- j9 M' v8 _0 ~+ \0 P
]
1 o1 X7 u7 o6 M0 n' S ]
" X4 w6 U! y5 l' {- C) G: Hend
p( B% B8 C5 g; a# |8 kto check-death1 H) v& z9 @+ o2 _
ask turtles [- u; v" {' y! E) c* _/ ^# q ]4 l
if energy <= 0 [ die ]
# W5 q) B" G; D ]% z3 N, {) A* E7 p
end
+ i$ N5 S: T3 f2 k3 m& Wto regrow-grass
; s8 E& {" y* k ask patches [
5 P) n& r/ ]! ~& t+ F Z4 F5 v* y0 S if random 100 < 3 [ set pcolor green ]
% G" |5 Y9 U6 [1 t' T5 g ]( l* I; ]2 j: V8 r; Q0 O/ m
end7 f5 [" E! ]) g* F9 h
to do-plots
1 D+ k1 Y5 h5 L/ H; S& P set-current-plot "Totals"8 s+ u) l' F1 m3 t
set-current-plot-pen "turtles"0 R% s" \2 \' ]' p9 t: h
plot count turtles
5 T7 B6 g8 T- x4 W2 l! B; ]- J! p set-current-plot-pen "grass"
5 e! A( u( V7 t" F0 b* ^# U8 c plot count patches with [pcolor = green]
5 m( e4 s3 j, d, u6 G7 Wend
' W# c9 A0 {6 ]1 H2 {+ {可是运行时提示no such plot: "Totals"
! H$ w. [ E) ^ t, aerror while observer running SET-CURRENT-PLOT4 M$ w. J6 P) |+ o
called by procedure DO-PLOTS
9 E/ i. n: i" z6 ^& y/ B) \5 z called by procedure SETUP
! n( k# i! D2 s3 ?! M called by 按钮 'setup'
8 A2 y- O" w- c& q: }- g8 V求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
