我编的程序如下turtles-own [energy]
( w3 T8 H0 n% [/ e2 Lto setup6 b( a* N' Q% G
clear-all7 i$ m0 j0 k& O9 V( T& B* |
setup-patches. T) C. ^0 m- g; h
create-turtles 100
1 P& Y6 M B5 {% P do-plots
2 W, f* @& V0 K( c# h ask turtles [ setxy random-xcor random-ycor ]
9 r; T/ | f, n& A" l: W# aend4 @8 U" `5 t9 s$ G
to go
# _" n4 e$ \ `4 f! o/ r \5 W move-turtles$ u, Q1 X: e5 w
eat-grass
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check-death* w6 W0 |3 [6 P1 {: o- G
regrow-grass
& n1 |% N' X7 v! w( m do-plots) L% v0 N' u( ^4 y. a- ~! @
end/ L& H1 k; o: L2 j0 ^( |1 {
to move-turtles+ P* W' f# W9 ~5 R% h, o
ask turtles [
1 h% x5 f1 S; Y/ q" n- v- K right random 360
; a5 G2 r; m1 L! Y/ x' ^" [8 y forward 10 B0 U$ Q, b& e( x6 H+ _. {
set energy energy - 1
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end
: L) q3 u4 n5 B$ Eto setup-patches
9 p7 k- l' C0 \ y, k ask patches [ set pcolor green ]
W/ ?: q* P# h! {end2 e* w( ^) P0 e! e" f1 z0 y
to setup-turtles
3 X; K. t5 v- V3 a6 ~6 h1 k create-turtles 1008 E: }2 d( b# S h
ask turtles [ setxy random-xcor random-ycor ]3 R: B2 v" v6 \8 r
end: k+ n, D& z3 }! C' |
to eat-grass6 h& N, v( B& [6 U
ask turtles [1 D1 P! Y' Q4 v* P0 ]
if pcolor = green [
. d$ Z/ ?4 {8 \9 d* b set pcolor black
; D6 @9 M6 }" A/ x( s set energy (energy + 10)
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ifelse show-energy?1 i# J# k$ S; V
[ set label energy ]2 d1 J8 @2 Y( b3 r3 } }, t) u
[ set label "" ]
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+ Z2 j" M) k- z. u! ^! V% m0 iend
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ask turtles [
% e0 b. E j8 P; `( l; V0 W if energy > 50 [
0 Y2 p' m1 Q1 k& Z# L set energy energy - 50 J! U/ l; f$ j2 r: p* Z$ @
hatch 1 [ set energy 50 ]
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end
4 [/ Z5 B7 y( G* F' w% Xto check-death3 O" X) I7 ^0 z' Y4 g
ask turtles [
* p! E: t. u1 _; i4 @6 Q if energy <= 0 [ die ]
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end5 } |/ a: W Q( D8 U3 g% C
to regrow-grass u% T, `7 x5 I) P: k
ask patches [+ ]% a* M2 F. u& F" {5 H
if random 100 < 3 [ set pcolor green ]
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: y( {1 [2 m( dend
! ? W$ w4 b/ b' p Vto do-plots
, e4 b9 o6 v/ N0 D' F5 p set-current-plot "Totals"7 C8 f F$ o: P" q- ^# E/ C
set-current-plot-pen "turtles"
4 \$ s' V, Z/ Q# f- J4 K& Y9 r8 J: I plot count turtles- B( g% K+ Z3 Z2 h9 i1 n9 e
set-current-plot-pen "grass"
1 S+ g5 r9 n; u plot count patches with [pcolor = green]& Q) J5 T3 ?7 { }8 b I
end# m9 h2 n$ M- H5 j. V4 Q R
可是运行时提示no such plot: "Totals"
$ E+ C6 F6 O& Z8 Ierror while observer running SET-CURRENT-PLOT
6 T* y6 z/ |3 v. H called by procedure DO-PLOTS4 Q q b* o) V. E" V
called by procedure SETUP
9 o: F$ S& f9 \ J7 ? called by 按钮 'setup', }! Y, A h9 u9 P: [$ h
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
