我编的程序如下turtles-own [energy]& f$ j9 M! U# \: ]
to setup) ~' J3 ?+ r, t; N4 U* l
clear-all
3 | a2 F, a) d" [' y9 w, A$ ] setup-patches
' A' b5 {8 ` R. _ create-turtles 100$ M) l7 [1 `* g9 {
do-plots/ W* d' O6 d" K& l) B' z: a
ask turtles [ setxy random-xcor random-ycor ]
% F: W6 K' P% h( Oend5 [8 v _9 I( o
to go$ e# C8 M3 Y: U
move-turtles
3 h* ]' e" N ^4 |/ @8 F eat-grass# H C& f7 q% ~$ Z
reproduce+ |2 a2 k. S, ]1 y& e5 }
check-death
. q9 b% F! r3 m! U& y$ q; v regrow-grass) c% P' B6 `2 B# c
do-plots& u% Y3 R* m: z9 j: h3 F9 w
end( ^4 @/ O6 I' P( M, l; f
to move-turtles
- S" Q3 n( a6 i4 s! ?5 {) u w1 o ask turtles [2 y- Q; ] y1 _8 h, p9 O* P% o0 `
right random 360
& i/ e0 G) V' K5 c- r forward 13 V8 ?: ]7 ^3 G. |, l; K# {4 X
set energy energy - 1
+ |- F) L$ {8 Q w3 o1 f: L! C ]7 A( Y% u5 G3 r! C. T A
end5 K# h7 h( G; V& o e
to setup-patches
& E. `( w- H5 N ask patches [ set pcolor green ]6 _4 z0 F: d4 }$ B# r3 s
end
; V7 r" s! [. T2 n4 H5 F3 _, Hto setup-turtles; j0 I* b( } c4 Z5 J! c; s
create-turtles 1001 s+ c, g3 ]" p+ [8 R2 a
ask turtles [ setxy random-xcor random-ycor ]
- C, J1 A! Q' d7 e+ Send- }5 Q) ?7 y' W# W7 m2 ~
to eat-grass
, F$ x2 R4 ` t2 U* R; n ask turtles [- N1 R; A, x0 s2 J: A9 m
if pcolor = green [
2 I$ e$ H0 L' L5 Q: y set pcolor black- Y4 s$ C: B) \
set energy (energy + 10)
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ifelse show-energy?# Y/ ~, H8 z. r2 U* y+ C8 q! k
[ set label energy ]
! E! x/ t% P# I7 ? _! T8 D e [ set label "" ]+ c3 J/ n( q' R. f6 n
]
( g! j. ? e5 C, H6 ^! rend
4 c+ Z! f, T7 c5 |2 P/ oto reproduce$ s8 _: Q+ K* I- c
ask turtles [
0 K6 P; h9 b0 o6 V; C3 N7 q if energy > 50 [
6 a; ~3 c5 s5 r set energy energy - 50( Q$ P7 Y5 u3 l" O
hatch 1 [ set energy 50 ]
, ~+ D8 U+ ]3 P8 ^7 V5 U9 H" m ]
% R- }3 G& r' p! m! E ]
9 _* X1 K7 Y& v( O7 W1 hend
+ [! D' m+ d6 Eto check-death
9 V& V( V/ ]9 t% O4 r ask turtles [; I3 c( B3 F8 U# I+ f; ^
if energy <= 0 [ die ]
8 M# S E: A5 S& \- C; L$ ^# R ]
6 Q$ A) `. {, [. lend
& p; d# J% e; K/ d& E6 Yto regrow-grass* }5 ~( N; ^$ g- k
ask patches [
! m4 Z4 `% }. C+ s) ^- F if random 100 < 3 [ set pcolor green ]
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end
3 L, H1 }" F, g. f% ?to do-plots1 t6 F* s3 q6 s
set-current-plot "Totals"4 u% J2 E* X: X+ M
set-current-plot-pen "turtles"
% N! X" k' H+ P- v1 P, S plot count turtles
$ ~* Z/ `' k% s1 @# c set-current-plot-pen "grass"
3 J8 q+ Y+ d4 l& p# ^6 O plot count patches with [pcolor = green]
5 @ w1 K* P! z5 a4 _- {+ mend
2 H0 \! @' j3 q/ L可是运行时提示no such plot: "Totals"
% W3 ?/ L+ c* r( J, ferror while observer running SET-CURRENT-PLOT
5 Y3 I! A! c' }+ f called by procedure DO-PLOTS R8 p+ p2 g% y2 J
called by procedure SETUP
+ x6 ?! \0 U; i; O( ^, @" y called by 按钮 'setup'
% \# I1 \) T7 W2 j) A: ]求大神解答啊 |