我编的程序如下turtles-own [energy]
3 `) h3 H& t3 }7 i, V5 Yto setup
( m( T- S7 {0 F& O$ g- g p6 J8 Q( e clear-all
) Z+ i: {5 Y8 ]5 M' w setup-patches
/ f* w$ Y6 e; s& ~4 | create-turtles 100/ C' O1 n/ t* R0 C
do-plots5 `7 s5 Z) h" q& u0 J0 ?/ X
ask turtles [ setxy random-xcor random-ycor ]
7 n5 f8 S$ p* w3 m! ?8 D4 z8 |end
. Z: Q4 e }% e% r! m5 g& O' Dto go- Z6 n/ s' c- R
move-turtles
7 I( ~' L. H, W9 J# \: d5 E$ Y. k7 V! a eat-grass
2 K- a6 z* E8 C2 h( S9 ~$ y reproduce
7 \# M0 y% r" E check-death" w2 r2 S/ E: |
regrow-grass
* `0 b q" N9 w: I8 e( Q% b do-plots& }9 X$ V% {. u
end
2 I; h0 v) Y) T- o" m3 D4 wto move-turtles2 N3 l% P, L( F7 J7 [
ask turtles [% W4 R5 o$ {/ z
right random 360
* _4 A+ V# W, }: s( } forward 13 ^8 u2 z* v2 B( p" l6 k
set energy energy - 1+ U- Z) ]8 n7 K" n" L9 H* X. m
]
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to setup-patches
' P, R+ Y4 z2 ~7 m* }5 C) P7 a ask patches [ set pcolor green ]: u* G; \ P1 l0 x G
end
& e5 A+ m7 @6 o$ I! _to setup-turtles0 H* [5 q5 _' p+ `; ?7 W
create-turtles 1007 K2 [7 l/ E$ T' V) ~. M
ask turtles [ setxy random-xcor random-ycor ]
- ~% ~) _5 K1 N" }, mend" X6 e- z2 ~! F/ |
to eat-grass
( ^' C5 i u, ?! T9 ]: P, K# f ask turtles [
+ o" i: B8 c0 @0 i( ` if pcolor = green [5 I J# I5 W. S$ {5 t: t
set pcolor black9 C7 |. b( Z% _" O9 b
set energy (energy + 10)
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ifelse show-energy?8 L6 Y5 Q" }7 H! P
[ set label energy ]
: `- R ?- r0 R6 f! o* t& r) } [ set label "" ]# L% [7 i: E+ X% n6 b
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end" | J6 ]: ^4 }: P0 k6 q
to reproduce4 i" e6 N8 M0 p6 S8 l) q/ `/ }
ask turtles [. \6 H: ~. D) e7 y) O
if energy > 50 [: [- Q/ c' ^/ V8 ^0 J2 }) y
set energy energy - 50
9 i" c' S" a3 c* d8 _ hatch 1 [ set energy 50 ]2 C' m; U* m# ? }3 m! m$ J
]% |1 e R1 C& b* G& b" e8 ?9 M
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end6 r* K4 n/ d/ g7 p, |8 W" [/ |
to check-death- T8 u3 x. m: s- l
ask turtles [
) u8 H# O9 _: }- A3 p4 d if energy <= 0 [ die ]) T* F+ B! s9 ~$ u
]
! C9 z6 }2 f9 B8 Z4 D" M9 ?: s9 Vend( l7 z3 M7 T" X3 o
to regrow-grass: j( s5 O) M$ L: c7 N& W
ask patches [& k5 U1 ~. v8 v$ _; i" Z4 `5 y
if random 100 < 3 [ set pcolor green ]: ]; O# e& d$ D
]
5 t* S' _- n2 {" kend
5 ]1 n& C6 k, ?to do-plots$ @2 P+ y/ F5 ]: t2 e9 a
set-current-plot "Totals", Z3 u# w6 T5 G' T/ A
set-current-plot-pen "turtles"
' ^; u0 {2 Q3 }6 ^7 p! S& v% o plot count turtles C* k0 X! n7 `& f+ b1 I
set-current-plot-pen "grass"$ G" B% J5 x, W* c, D- O1 j# T
plot count patches with [pcolor = green]
0 X x4 \9 X2 U: Wend
3 O5 j8 k. x8 \0 v可是运行时提示no such plot: "Totals"" {% m2 v; i! A, C( e$ _
error while observer running SET-CURRENT-PLOT
4 ?' ^- a% i {, u& O5 F7 f called by procedure DO-PLOTS
& n* O$ w: r; a" v+ Q, a. X called by procedure SETUP7 [, F( o' f4 ~# M/ [3 @
called by 按钮 'setup'
! Q9 R2 e4 E0 f求大神解答啊 |