我编的程序如下turtles-own [energy]
* t$ C+ | F$ f9 |2 V, ^8 i8 ~2 }) Dto setup
. _3 ^$ R! j( d clear-all+ F5 k& Y1 y! L# V+ L* G" H
setup-patches0 o. p. f3 i/ g+ p% b8 }0 k8 \, N
create-turtles 100
+ t: Q2 R6 E/ U" z3 u7 O do-plots
. |5 v4 X d4 I# o5 Y- A5 V8 o) k ask turtles [ setxy random-xcor random-ycor ]
- S5 ^4 x3 G+ K6 Nend! z& n) D9 f+ [1 Y
to go
$ F# O1 T( f2 y. ~% O2 H move-turtles3 V: n4 X- y+ s5 s3 _) s
eat-grass4 G+ ]) m" W; @6 Z! U
reproduce
" @8 y! p: i9 \0 y p check-death% l: L/ Q+ W2 k6 L6 a7 }
regrow-grass
; y7 G1 D1 t& q' k do-plots% h6 N' l [) K$ g. P5 V) l
end
2 X! O# p' o" E+ a* g; Xto move-turtles# p( d" z8 l/ o) d1 }9 T
ask turtles [
$ n+ P1 r6 B' X6 d5 {& L right random 360
$ z* Y( v$ k4 `. ^, H: o0 n forward 1! L) W4 A' J! Y: g8 b$ o
set energy energy - 1
2 |# w# j# C' a; i# m2 v ]
7 J3 I. @2 z1 ^; send, K7 K# z: r7 z# t* z" E5 n! g
to setup-patches
) j( o7 T. N% k ask patches [ set pcolor green ]' S: e% q5 D+ [1 ?' V) X; `3 |& v
end' d) s( n* Y* h' }8 N
to setup-turtles0 G U" l/ l2 M( w+ T/ P4 G
create-turtles 100
! ]0 a/ g7 ~5 e" o% _' w ask turtles [ setxy random-xcor random-ycor ]' B" ]8 @! ~: @, w: e8 J4 N. o
end
* O+ y0 }: z' S& z4 f3 }# jto eat-grass
$ T3 @) k. V4 ]: O ask turtles [
% Q" ^# N0 k I. ^% m if pcolor = green [$ j! Z T! h$ ~- P7 x1 n2 ]! g
set pcolor black
6 W) Y d! D5 U$ k) [, F" }& ~ set energy (energy + 10)# N+ H+ A( k. W% [
]
0 J2 k R; |2 y ifelse show-energy?
' l: U6 c ~( U! o$ P1 e1 ? [ set label energy ]. c1 \, y; n* c- g( ^
[ set label "" ]( |0 ^: B+ l0 j1 u1 k) A5 ]
]
0 ^8 j# l0 Y- U; g2 K8 rend0 a+ @6 @+ y0 w- I* }6 W) n8 z
to reproduce# X y. K8 H* v* B
ask turtles [1 ~2 H: U9 o7 z7 f1 Q1 K
if energy > 50 [
k J" a3 X4 ~ set energy energy - 50
; F4 r) D' ?! \# _ hatch 1 [ set energy 50 ]
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]0 t8 O; o: O: \0 q& i
end
# I. `/ ~4 K2 R5 W: E2 \% \to check-death
! J: t& R! h$ H ask turtles [
, I- }/ M7 O4 @. [" E# T7 X if energy <= 0 [ die ]
' ?5 m; h) }: n% D: s& ~ ]- ~3 j5 }2 d0 v- J: G
end
* [5 H! u( B- T" rto regrow-grass
1 U, d4 N: Z5 _/ W ask patches [9 X' Q3 A- r3 [
if random 100 < 3 [ set pcolor green ]6 z3 V) C$ N5 d8 d' L
]7 G8 {! G2 n1 u. n6 C* @
end
7 p1 `# ?! H# U! c7 K) p4 o( dto do-plots! ]- I, Z7 U- ^, N% q& G4 H* t$ P) F
set-current-plot "Totals"& V" ]8 ~2 r. P$ J0 R
set-current-plot-pen "turtles"
. T X( Q2 a2 @, K plot count turtles
- V. v0 p6 v1 R7 O5 |( X set-current-plot-pen "grass"( J2 [% |$ O; i5 K9 Z9 w+ O# [( A, K
plot count patches with [pcolor = green]
, _5 o: E# l6 r0 {' Rend% M+ t9 n( B8 v9 j* f
可是运行时提示no such plot: "Totals"# G, {. u5 u# z
error while observer running SET-CURRENT-PLOT
- k: U4 c" J Z+ F+ A9 b called by procedure DO-PLOTS% {$ {% i7 s6 j" h0 |3 K m
called by procedure SETUP3 Z7 n' k+ {, _- w" y5 `
called by 按钮 'setup'
" c' H+ Z$ E3 p: J3 @0 }; S求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
