我编的程序如下turtles-own [energy]
; v7 Z0 h- t4 K. l% pto setup
" T) ?5 D. _$ F; ?; g' i( z# c) U) p clear-all+ o$ @0 I8 k) t! K
setup-patches
9 V l) a% ~( d: D0 w; @) D create-turtles 100
3 Y$ `8 r, O' C3 O+ ~2 L do-plots- O/ W2 C, @' b7 }
ask turtles [ setxy random-xcor random-ycor ]
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to go
" Q; u% _6 |1 g- P$ ^ move-turtles' F+ m T/ X7 \& }) U2 s9 P
eat-grass7 _. k, ]4 c+ C" \! }& ?8 j
reproduce
" _( E7 f* A N" S, X check-death
* ?# H& r& d2 r) ]5 r regrow-grass
2 j' A5 v, R# z7 J V# m% _ do-plots; P( |9 b, T/ u% y- b/ T. g) I
end
# R) {8 ]8 R! ?9 `* d v; a7 I& \/ Gto move-turtles
: q3 U5 W3 R/ j! o4 d3 |0 D3 `$ E ask turtles [
$ S \4 d. C; ]) q2 l! H- ] right random 3609 f; Z; h' s0 K$ v
forward 13 r# y$ O) P; s" R. z! m
set energy energy - 15 d: h2 v5 S3 S* c
]
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to setup-patches
$ o& T3 j7 u; ^3 Y ask patches [ set pcolor green ]3 I: F5 E; v) e/ q! j6 h! O9 f
end! T3 k4 c, w* ~5 h2 _
to setup-turtles
! r7 J1 a( m' F" f$ U0 ~* ]. b create-turtles 100
- x6 j2 v* z7 i6 H' K ask turtles [ setxy random-xcor random-ycor ]
0 s" ?2 }# E6 {! h/ s5 t8 K- w8 |7 `1 Aend% p8 x9 c9 u! L% \/ G
to eat-grass1 u+ }7 L% y' j0 `
ask turtles [9 f/ N& t; \# S+ L: z4 ]" c" E: @
if pcolor = green [
7 [* c1 L/ O3 I# u1 |2 l5 T* a set pcolor black
0 ^* A- j0 K: W7 P1 ~) n set energy (energy + 10)
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ifelse show-energy?5 L: \0 h: t6 c& t
[ set label energy ]
. K- d. G! _1 k# l; y0 m [ set label "" ]
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end- H1 W$ s y' Y+ k2 B
to reproduce
/ {* L3 o/ ^8 ~6 e4 ^7 U ask turtles [0 W+ P$ y, U3 \5 V% W1 h! b% N* s# s
if energy > 50 [
8 E6 J0 D. O& } `6 [! t set energy energy - 50
5 z- j4 J$ q/ n8 K' O* N7 e hatch 1 [ set energy 50 ]" D( e% X3 O' L" l C
]
& A9 Z6 _9 p+ u3 [9 |. \$ g ]
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to check-death
4 z% f' _1 ]8 \ ], x ask turtles [4 Y4 L6 A* V2 b t y4 z1 O
if energy <= 0 [ die ]& G) W- T: G& {4 N7 j& i0 m( Y
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end
2 t R/ b( Z/ S- {to regrow-grass$ c5 A. Q ?: E2 w0 w
ask patches [# f0 f" B i- c9 R+ j$ N" R5 A
if random 100 < 3 [ set pcolor green ]
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end
( v: K3 [& W( J. h" [to do-plots3 S# Z8 T* Q$ w( d+ O
set-current-plot "Totals" M7 S% v6 l9 v3 t' l* r& \+ m& c E
set-current-plot-pen "turtles"
$ b, x( X( w) J plot count turtles& b x1 {( V0 U6 `2 l
set-current-plot-pen "grass"
9 W7 I5 ]8 ]' m) L- Z) P plot count patches with [pcolor = green]
+ T) p# O+ ~9 w+ \0 x! }( r+ U m) z) eend8 d W) F8 R0 H, e& M6 @7 w p
可是运行时提示no such plot: "Totals"0 g$ \/ ]6 P2 h/ B7 `
error while observer running SET-CURRENT-PLOT
( |) u& b- R6 w) z. m4 ?( ~ called by procedure DO-PLOTS5 G. @) g, U$ [ x) H
called by procedure SETUP) R! d. y/ J. \/ j& z
called by 按钮 'setup'
+ W. W1 z" Y v: ^9 t' v# M& e求大神解答啊 |