我编的程序如下turtles-own [energy]
/ E0 z% B+ d" `" `' d$ q; Ato setup
/ t% b% Z2 ]* s8 p1 @ clear-all
, D; |/ o. ]# W( z. d" ~( l+ M' H# v, q setup-patches
3 l( S9 g' i$ h2 g2 t create-turtles 1007 g5 u6 L! S! H7 i
do-plots
7 Q* d* m6 v! w- @0 w ask turtles [ setxy random-xcor random-ycor ]( ~ i& ?: b7 G! r
end0 r. `, {7 {. Z3 _$ a z
to go
( l9 g# F5 G+ g. w move-turtles
2 {* a5 e/ G& B8 F! D1 a9 x9 x eat-grass) Z! }5 I6 [5 Z- f$ ^
reproduce
5 [! w8 {( k1 |$ y1 l+ N P check-death$ ~7 P7 ]# ?- ~3 w" e/ W0 Z
regrow-grass" A( ^5 x3 b1 L
do-plots/ `9 ~: s; e$ D" j4 J
end3 }" l# f" m7 h# j
to move-turtles
) L9 |. P5 Y: U4 C8 B7 V+ O0 n2 a ask turtles [
% S- P2 h& n% z4 M0 @# h+ Z right random 360' G* Z( I- j' ^2 ^* v) k9 _
forward 1
, L* b, b% C# U. `# q- z, K set energy energy - 1/ v, h( N, g4 l: G
]
+ M& _' O j7 }4 ^, O9 ~0 b+ ~end
- H) e0 I. m) ^ G, [$ Uto setup-patches% c1 g# N. @$ y& v
ask patches [ set pcolor green ]- f, h* @4 E/ Z4 j4 q
end% Z( \2 |. l+ Q
to setup-turtles
* h* Y0 K' N! o create-turtles 1006 m: f0 \( g7 c* t) e
ask turtles [ setxy random-xcor random-ycor ]% r$ s3 t5 B: I) T
end- n3 |: y h8 ]
to eat-grass
0 e1 O; f1 m0 ]' U ask turtles [2 ^6 R6 Q; y! w) e: z ~
if pcolor = green [% H5 D4 E' {& \5 G( m0 n+ O+ C+ u
set pcolor black" j: k1 }& N5 Z4 ^ X3 L
set energy (energy + 10)
: `* L( R' L2 E ]
* n5 T k. L- M* Y! [ ifelse show-energy?% g7 Z: p& z& m4 _4 i% p, U# d
[ set label energy ]
& e& V. m F4 R! b [ set label "" ]
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+ o: P- x' v6 x- p( r, Cend7 R: _% _) U" a' ]7 m% j
to reproduce3 B( M! z3 Y1 E) s. P, _
ask turtles [) Y7 @0 H7 g/ ?$ @; \9 ?
if energy > 50 [
8 @( K- E0 H+ V) x6 { set energy energy - 508 L+ e4 a7 R' q1 k+ I1 O! K
hatch 1 [ set energy 50 ]6 L$ ^( v' Z: W0 K1 ~; |: e
]$ u# a4 M; }$ M
]
" w6 h% c( o2 l# C* bend y& r# ]5 i3 M1 l% D
to check-death k4 @& }. d9 g
ask turtles [' ~) n. V& p$ o
if energy <= 0 [ die ]7 X( R* ?1 _. M0 w! j
]% P6 X( d4 S3 c# n9 t5 i% v1 k
end# r& r" Q& U# b+ P. ^4 A
to regrow-grass
- w: ^' D$ i, C# J0 l5 s ask patches [8 L- E, |3 W, D2 t2 R) `4 G
if random 100 < 3 [ set pcolor green ]3 f3 Q4 ], D8 v) q7 }
]
- Q+ o8 ]; w2 b, e( _4 T, Bend
; y/ p$ I5 F2 u9 q5 Sto do-plots
3 J$ B6 K7 j# v set-current-plot "Totals"% _6 v6 B3 L' S/ P( Q) r! `
set-current-plot-pen "turtles"
9 l$ F% ^8 F6 x8 V plot count turtles# d6 \+ \0 v: e4 b
set-current-plot-pen "grass"3 |1 x" c* z8 J1 E
plot count patches with [pcolor = green]
! w6 X5 q" `2 [/ h- c9 c9 Nend
F1 {4 Q2 u; \/ l可是运行时提示no such plot: "Totals"
; t3 F- V/ w, j9 {% Terror while observer running SET-CURRENT-PLOT8 `7 o& \; S5 L$ h G1 }
called by procedure DO-PLOTS/ ~" ~) ~+ Q; _" q* A
called by procedure SETUP; ^7 \! C7 T+ {: O4 q( E& v
called by 按钮 'setup'' M6 U; a) c6 b+ V) P
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
