我编的程序如下turtles-own [energy]
4 @$ r* |" l" oto setup4 \8 L# |6 a: E" M/ x! S9 ?
clear-all7 z6 W% V' \' @! M! E, ^
setup-patches+ T7 v9 M1 j# s" k
create-turtles 100
$ K; J! h, {' F( u6 P do-plots
5 A8 I/ D- y/ P" l ask turtles [ setxy random-xcor random-ycor ]
# b, e0 Q2 p. y: k6 M* q7 uend
9 o4 F. a+ q; X- I: ?to go; d3 M- O( h w' |
move-turtles1 K9 n; {- ~9 E. X8 y6 X+ y o
eat-grass3 B5 m1 K* {7 S' z% B% X9 \
reproduce [ L' ? y2 i+ g% k
check-death
) I0 l* T8 s# ~; ^ regrow-grass% N W" T; m: W* ~6 A4 p
do-plots0 C1 q8 _" v% s' c4 l. U
end
& |0 B, e5 n& Sto move-turtles2 j) o$ v: L Y+ X+ P. o; j
ask turtles [- {+ ~: }( H4 {: S. j+ J
right random 360
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set energy energy - 1/ f8 O8 _( h" g
]
( x4 D+ h4 J6 j6 ? O( Y' W' `$ A& ?end
' @8 I4 ?2 ` r+ ]. J) `% w. Sto setup-patches6 V. W( Q; F- a5 F, q
ask patches [ set pcolor green ]/ h& ~: R* Y4 j c4 f* T, d. H% P% X% q
end/ |- W/ P! ?8 R e) [
to setup-turtles
1 _4 b( x+ B; ?: V create-turtles 100$ M" V. _9 }, e6 s8 Y1 |
ask turtles [ setxy random-xcor random-ycor ]
: M2 R1 `- Q$ i5 r$ ~! S# pend
7 _2 w1 s4 M# Z" {# F5 ~to eat-grass' z- d+ E* L5 \
ask turtles [) S1 R7 d6 j' ?$ `
if pcolor = green [
! S$ {0 F7 n/ p set pcolor black. @& V% o/ H1 |, [! k# Z7 d
set energy (energy + 10)/ j; t1 K6 Y- j2 [
]! [) }" _2 Q r8 F8 l, v! X0 |
ifelse show-energy?2 o2 ` V; n' V8 Y h* d
[ set label energy ]
7 B/ C4 \. a; P4 } [ set label "" ]+ D6 I7 A9 k2 P. g3 b O) M
]
1 Q% `+ P. c. l4 ^+ t" t- l2 L* Oend. u% x, u& c+ N" q7 I
to reproduce" m {& d) `5 D! v
ask turtles [
5 M' \3 k6 E% i1 c if energy > 50 [3 H! f# v8 s+ b1 M X& z
set energy energy - 50
y; d ^: u2 f3 | hatch 1 [ set energy 50 ]9 a2 U2 R9 l5 a$ G+ G
]; H, S( n, x7 y
]
0 a5 ]3 r; f+ T5 Tend
1 X8 H! H8 ^! Wto check-death
9 {1 p: V; ]& U ask turtles [
1 p) M4 B* q4 |6 d( S/ R5 j/ [1 V if energy <= 0 [ die ]5 D( _9 `4 `3 ]- [: `2 w
]
8 H3 f# D6 O( y( O* o( ^( bend
$ P# L7 r- n/ G" g; P" V, ]0 A$ u+ Ato regrow-grass
! u5 d0 K6 T0 f) @8 O8 h ask patches [/ u, s8 _, y/ r& B8 s; c
if random 100 < 3 [ set pcolor green ]
; f B5 @, ]% R6 I( y* ~0 K3 L ]1 w( u( i" u: v. T
end
" O& M) z: Z6 U) _2 ~' ito do-plots
! m* k v# m# N0 l/ N' w" O, { set-current-plot "Totals"
4 ?# J2 b) e, h( l5 m6 S set-current-plot-pen "turtles"% E' X6 T3 }; e* n P/ A
plot count turtles
) A- I* D$ s& M6 N f% i6 V set-current-plot-pen "grass", o- [+ p1 r: P, K. t r/ [
plot count patches with [pcolor = green]
5 F, e b) {9 z* h$ o$ L9 @4 Nend
9 @. _' ^6 w" U; s. E可是运行时提示no such plot: "Totals"& q$ y, N* C1 H: h
error while observer running SET-CURRENT-PLOT2 a; J6 A( B) X x! a, n3 C) `
called by procedure DO-PLOTS
3 I2 ]: ~) y) ~0 J9 ? called by procedure SETUP
+ r2 `- [5 D$ d) P9 v called by 按钮 'setup'
4 F: p- N- x- y1 R6 o求大神解答啊 |