我编的程序如下turtles-own [energy]
( x+ T+ R, a; _% n% V! dto setup Z y; \/ c& M9 s* N' R
clear-all2 h9 y/ c: I% k u! d% G
setup-patches2 r, C* ~$ J7 r4 L+ l
create-turtles 100) T3 y, A$ J8 [
do-plots
$ U& x8 E) C$ ^+ c, Z' R2 C9 X' w ask turtles [ setxy random-xcor random-ycor ]
) |- C5 _0 }0 c& J+ P/ S2 @end
, h2 d' |5 w# {/ Vto go3 L; D; s- Z9 D/ e9 m1 e
move-turtles/ l' S p* K3 K
eat-grass( @' ?, s* K1 K5 V+ a
reproduce# i8 _0 b9 R. b$ X2 t7 k
check-death
3 r1 X: R& X5 M# s1 c$ I4 H* X5 G; k' { regrow-grass
8 l$ |- z8 o* Z' S0 A/ X do-plots
) ]. [8 o; [% w- B& j7 G4 \9 send
, c9 `4 Q0 c2 S3 t& Jto move-turtles! X i! A0 Z% C) ~
ask turtles [
1 q( b* O. C# w& U right random 360
$ Z3 L* H+ l/ J8 ?; U; \" O! K/ o Y forward 1
1 L% _( v. V+ e% a1 G1 a set energy energy - 1
6 {3 _& J$ D5 }) ? ]
( E) J7 B+ s. @, U9 c( e& Qend9 ?% o1 \6 U. D7 d- h9 s% Z
to setup-patches
6 {! V% I; a" M$ u ask patches [ set pcolor green ]% b" k- @# l0 c& w% U! R2 D6 D
end
. R4 l4 ^3 D4 \: F, \7 Hto setup-turtles
1 B& q$ K& b) | create-turtles 100& k+ ], m: `' B: ~5 a3 b0 ~2 d8 L
ask turtles [ setxy random-xcor random-ycor ] Y2 X; v2 h. i1 A9 Q0 s) K
end! s5 b! q* d; X6 l' x+ Z" W3 [; _
to eat-grass6 O0 r Y& ]2 K4 |
ask turtles [0 U6 R/ I" Y$ H+ W
if pcolor = green [
* D5 y% s3 B5 H. D* r set pcolor black. D" T( {9 M6 T5 B) L1 Y8 Z. v
set energy (energy + 10)
0 O: ?+ A, n& c) u& _ ]
$ J7 B5 @- i& M B4 D/ w ifelse show-energy?
* T2 t8 L/ X4 V% E1 L2 C+ m [ set label energy ]
l* J* Y) {# Z' C$ Z [ set label "" ]
0 P& I3 p# _9 X( q ]1 e. p9 h8 ? F Z$ c
end
: X" P% i7 b' J @7 lto reproduce% y9 _) [ U; x6 K3 l/ r, l
ask turtles [
' g( H4 X% f0 B8 L8 N+ D if energy > 50 [+ w& }0 m a9 `$ h- a+ R
set energy energy - 50
3 ]4 \3 Y9 D/ S! u. r" P1 c; x1 t hatch 1 [ set energy 50 ]
5 P; Y M' _! \+ B# T ]
+ w3 R' C3 k' ?: ]/ B0 k6 q' f ]
6 ~9 y( V7 W$ K0 y4 rend
. D5 r+ s' t4 g: A- E, Y7 d- xto check-death8 a' H0 U8 I) I }
ask turtles [
* M& ~8 w, A0 { if energy <= 0 [ die ]; E& y3 h# {3 N5 P# f
]
# }& K" m$ l$ gend- p) c7 R+ ^' L/ D+ N! t, q
to regrow-grass/ u: X3 ^: h3 m g3 D- b
ask patches [1 k( `4 F! u. x% a% _0 } e W1 U
if random 100 < 3 [ set pcolor green ]
& _2 C7 v2 \( B4 S$ W+ ?8 `1 C ]
1 C% K: |" U. S+ @9 xend* y: }# w; a+ b# P0 w3 B2 H6 D q% a
to do-plots5 F0 T' d5 Q' l8 K4 e
set-current-plot "Totals"* s, L |! B6 A, {/ A
set-current-plot-pen "turtles" D0 Y" r* T6 T3 M J0 M% c3 Y% z/ ^
plot count turtles$ ~* s- U9 d+ S' z: m: ~ k
set-current-plot-pen "grass"
+ p5 O8 C) O0 b9 K' U/ I+ Y plot count patches with [pcolor = green]2 j" h) v4 Q" F. v# ~
end
5 G0 Z7 R3 B7 o/ _3 {可是运行时提示no such plot: "Totals"
4 A) @; t. o* D7 F5 Ierror while observer running SET-CURRENT-PLOT8 {$ Y) h9 b m
called by procedure DO-PLOTS2 s. V, B1 n+ h
called by procedure SETUP
# C/ E3 ?" k0 K/ T called by 按钮 'setup'
. R/ a" y }6 v; ?求大神解答啊 |