我编的程序如下turtles-own [energy]
! p) i7 Q, p0 X4 C( @$ kto setup+ ^3 Y r z* V3 ]8 V/ \; x$ T4 B
clear-all
8 l$ t+ c4 P t) |" s setup-patches
7 L5 F9 H6 D8 q- A- u5 O create-turtles 100
6 b) t! b. c8 ] do-plots
/ S4 e. V7 ?0 Z+ }/ B ask turtles [ setxy random-xcor random-ycor ]
c" O7 i9 Q7 P+ W M1 Iend& _+ `/ P, v3 _
to go% }* D) n0 w+ ] ]6 ^$ E0 C
move-turtles
7 z& V* W! t/ j# X" \9 i* B& G' Q eat-grass
6 Y& Z: {5 Y n+ X- L reproduce
2 m; y* g/ N4 o; q4 s! \: { check-death: E( m+ A' V" V V' T* u
regrow-grass4 V7 ?1 E+ U. w2 E
do-plots
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to move-turtles
8 a0 s; ~" r* T a5 \: K6 d } ask turtles [" D$ I. u9 m6 S
right random 360" N: D5 u( F0 Q2 x9 w9 k# h
forward 1
! K* z) O# A0 z5 a1 K5 p set energy energy - 1* }8 q6 ~7 l- k
]
: V* a8 E Y1 ^' @3 x* Fend# V; ^: ?: j$ n
to setup-patches
0 _0 F: I* [( Y, i: I: g ask patches [ set pcolor green ]
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to setup-turtles# y! {; _2 W3 \: o. p
create-turtles 100
m0 U* Z' }5 @4 H2 T ask turtles [ setxy random-xcor random-ycor ]& K, `1 [' r5 J/ i& Y3 {" k- x
end
# A4 x0 Z: _4 l; G. [2 [to eat-grass$ c. _! N8 L- p0 ~, G6 T0 y! Y
ask turtles [/ |& n# R, i" h
if pcolor = green [" J x0 }( O1 P+ a6 O
set pcolor black
' h2 P9 F( J2 h# E set energy (energy + 10)
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ifelse show-energy?1 c- y8 J) i) F( Q* _ ~
[ set label energy ]6 D% M* `1 _# e4 D% V M6 g! X
[ set label "" ]6 V, K# h2 p6 j* j; c2 ]
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end
$ f. z2 Y8 u* ~& `% cto reproduce: T2 Q! E# o* V" O$ f
ask turtles [, G; b4 L" Z, H7 ]5 }. O0 f
if energy > 50 [% A( u _& |, l8 E8 O6 n0 s8 @4 m
set energy energy - 502 [; z! h/ _; p+ o; E# C$ Z
hatch 1 [ set energy 50 ]
y# E: G- m1 v. _ E5 } ]
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end; @5 T5 g# ]% h1 T$ H* @
to check-death
4 e D* i3 u- T K( t& k0 s' E$ h ask turtles [" B- Y0 L5 X4 l% T, T
if energy <= 0 [ die ]; M2 h4 ?) m, U# L$ U
]
7 B" c8 [/ Y& n0 M6 h$ Nend
+ L, s' N$ [, Nto regrow-grass
) V2 Q4 e. H6 u ask patches [: z1 y1 c1 R4 I2 r. ]
if random 100 < 3 [ set pcolor green ]
+ Z2 O3 R* ^1 ]; U; @ ]
- C! l: k! w" ]/ Hend
- u( O# V0 T4 @, {$ K- Z3 B! }to do-plots' z& B; {9 N b4 b% V
set-current-plot "Totals"
7 S& F P( G1 m, e' E3 D* b set-current-plot-pen "turtles"
3 q, {( C/ @8 Z, R$ `' X plot count turtles6 J6 L+ e" w+ S4 B0 L: C! Q' ?; h
set-current-plot-pen "grass"; o; ~! D* X c$ U1 @/ W9 m
plot count patches with [pcolor = green]/ ~; ~) K; w s7 s
end
0 V/ ~) d! s# _) B- o可是运行时提示no such plot: "Totals"
! o* B: f( E/ D( Merror while observer running SET-CURRENT-PLOT, Q0 a1 V& F' |$ [& C# ~ S
called by procedure DO-PLOTS
% ^4 @$ j3 O# G7 @2 F called by procedure SETUP7 {# |3 v% B& X7 e2 L6 X- j; m% }
called by 按钮 'setup'
/ s' V+ j+ X& D( h' n7 R求大神解答啊 |