我编的程序如下turtles-own [energy]7 H! I9 x7 T0 N! `: ]: |
to setup# o% H5 u' {7 N, U' m8 x* N1 U
clear-all- V/ R' ?5 p- l/ m+ X n7 M
setup-patches5 v" ~7 M8 o4 O- v; t# E1 D( y$ S1 H* ]
create-turtles 100
9 \/ g0 \ v6 O- P do-plots/ f: E0 ~: k% ]' P' c" F- |; o: X
ask turtles [ setxy random-xcor random-ycor ]' F' z0 k8 W5 R B: M" Z' w& A
end" I2 {- ?& E c5 q
to go
8 k1 t* _7 M3 D% @0 Z/ G F9 J move-turtles
* o: q% @* Z& A/ c eat-grass
( ^4 j i+ w: Q' j% t( r reproduce6 T' {1 ~3 s4 G; ^( l
check-death) K G) [. u) S* r, T M! D z3 ~) F
regrow-grass
+ {% J- w/ @2 y; {7 h do-plots
' a+ }2 _/ N. x9 R. pend
! U$ V2 e. V/ e8 Mto move-turtles
6 \ m- `8 f2 x% Z. m" c0 V/ b8 ? ask turtles [
4 n a! B+ u% \2 l4 R1 \: F right random 360: Z$ M% ]% `" G0 C, \
forward 14 w$ L% ]7 _, z
set energy energy - 1
! e; i5 y1 d j% @& x: a ]' S- c4 }3 Z7 J/ d8 |8 U
end
, L. }) @) R H; @to setup-patches* ^5 }" v- ]7 e- |7 @. s9 b# s* r
ask patches [ set pcolor green ]
6 X( p+ A: Z/ ~6 r; uend3 n8 U6 Y; c" y" K4 F% Q+ X& V
to setup-turtles
" G6 q! P2 @' M# _) h create-turtles 1004 \ L8 m2 T3 C7 N3 n; c
ask turtles [ setxy random-xcor random-ycor ]' A/ |- [/ ^# M; m9 J
end8 W# A/ x4 b' F
to eat-grass
6 Y9 ~. [+ F7 v, p ask turtles [: u8 K4 [: R D
if pcolor = green [
! d/ z- N- Z2 r/ s. W2 u set pcolor black
' t4 z9 J3 J1 m% V5 j set energy (energy + 10). h% L2 P5 a9 M) L- g0 l+ l
]$ s; T/ S" P+ x& J
ifelse show-energy?. Z6 z0 ~# |6 M1 o. V
[ set label energy ]. @) q# `! R7 [2 s6 C1 M
[ set label "" ]) {- `+ W: R, U* U% C) m6 R
]
. Y+ k1 }- W3 |% N( ^- A3 Vend) _$ l9 k* } R$ A, E
to reproduce( k% Z7 U1 A+ o; O
ask turtles [
: P, \- u( S& I0 ]& @4 V* { if energy > 50 [ v+ Q# K, h( b2 d) B h: `; |/ Y
set energy energy - 50+ J# m, {8 P7 ]) k9 |+ U
hatch 1 [ set energy 50 ]
4 K' c( w8 u1 [& n: p J) F ]
1 I& L' b3 J2 t* N% a1 U ]
5 Q2 D1 @! P: c; w0 q) Tend8 q# h0 A9 O# M/ }
to check-death5 T$ c; |0 w L7 }8 G# V
ask turtles [
' U/ T$ m# W9 |) V& H if energy <= 0 [ die ] |7 T2 Y6 ^% K m3 @1 q7 J
]% e' I1 D6 V+ }2 j+ D
end
* r2 v6 s) K3 K0 j3 D' s q, j+ e nto regrow-grass3 d+ J" G) z. k3 [6 Z# \7 ^. q G
ask patches [
! }5 H* |/ r3 g' [) y* d7 |+ L if random 100 < 3 [ set pcolor green ]
+ N9 A% ^: [8 Z8 f" a ]2 S0 w8 v. K2 Q. x L) `
end
4 ^3 m8 {9 g0 m% a' I# Hto do-plots) o4 {& _5 t0 Y5 A
set-current-plot "Totals"' u& f4 B x9 P+ B
set-current-plot-pen "turtles"
; B. [/ D$ r t) ]% G/ Q: \ plot count turtles1 U( t! h# g( R8 z% q
set-current-plot-pen "grass"
* k. o3 @7 [: w5 D1 q( S# D plot count patches with [pcolor = green]
5 [1 u0 N8 ^ B9 C* aend
- C* ?2 W$ ~& B0 a& _可是运行时提示no such plot: "Totals"0 f: H! G( C9 x8 V* A
error while observer running SET-CURRENT-PLOT" t) c$ r$ }' w3 R) }. T
called by procedure DO-PLOTS
; O2 v. K0 Z" I& T; [* m called by procedure SETUP
- S4 k- F1 Y+ v called by 按钮 'setup'
; `. u$ }) X ~" m" y- j3 P! o6 ?求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
