我编的程序如下turtles-own [energy]
" C9 ?% J# x7 t! eto setup _% ^8 \/ v; v. T5 o
clear-all
7 Z1 `( y2 f1 l3 l setup-patches
" |4 u0 f; j, x8 k create-turtles 100 S) _7 ^% s% v" N- Q
do-plots
2 y/ I$ g j( o5 C. E ask turtles [ setxy random-xcor random-ycor ]
* x- R3 u% i3 V" C5 ~" H% Pend
& m6 E. j* r; S4 {1 c4 ito go
+ V3 q9 O$ H# j; [# j# x' O7 C5 ]& O move-turtles a# J0 R% k( ^5 M1 U9 l3 ]
eat-grass
/ N' ?+ W# T, [3 w- z3 y reproduce
$ u% d, W- |+ x- j2 L7 D& _. r check-death+ O7 d6 g% G0 J+ @
regrow-grass
" Y" k t8 K* I7 i+ L; Q6 j: K do-plots) F% i: d* a c8 N5 c, N' ~" k9 J* q! g
end3 o+ L; I2 ?0 H2 ^5 h0 t8 s
to move-turtles r8 [0 Q M4 r6 @6 V) n+ d5 j
ask turtles [
1 ]$ \$ V y9 P* Y$ P/ H& b( Z right random 360
4 X3 I& c# E4 p1 T forward 15 m3 v; E! y, i' I) J& X
set energy energy - 1
+ m; c; v) \8 x$ z$ ^2 U7 e ]
8 a v: X# O- p% q* R; Mend
0 b# G" j1 v2 Zto setup-patches
* M! t+ P0 F8 P! \, ] ask patches [ set pcolor green ]" B$ i z5 I( T) O8 O
end
3 u ~2 j1 z. \to setup-turtles1 z* M' B+ M# O; t, ]
create-turtles 100* S: V/ Y0 c3 n# X" T s
ask turtles [ setxy random-xcor random-ycor ]8 ^4 c1 |; B! h; g | y6 Z4 p. z
end/ ?7 u1 Z# }: t; v& t
to eat-grass
0 L7 X" Q9 o, p# Y* M% B ask turtles [
Z# `' }6 v4 q, \ if pcolor = green [7 J* _+ R" ~# i/ B
set pcolor black4 f# R/ t, g' _" t# C
set energy (energy + 10)! Z9 I) ~& B/ W: S- W
]
; |( ^, {. u7 ]5 Z( X* ~ ifelse show-energy?- c. t- {# m+ E
[ set label energy ]9 a# g: a! ~7 m4 e
[ set label "" ]
$ P9 A) Y" D! g3 ]$ u$ K. e/ ^ ]
. i8 z2 b" t: g6 X5 _end5 D3 K) K3 T! Y' K; O' @
to reproduce. @1 J+ @/ k, b N: n, {% _" p
ask turtles [
3 ]7 p9 E* Z0 W) J; C* g7 v% d if energy > 50 [$ i* q: S0 M: O
set energy energy - 50
# g- k m) R9 O. Z hatch 1 [ set energy 50 ]8 |8 Y! x0 X6 V: s
]( f2 U4 o- |3 q: `# X5 E
]
/ x+ r: D% l5 t6 p) T' Rend
4 N Y/ h0 U M: \to check-death
' |) n- ~: d D3 S- d1 {$ j, d ask turtles [
4 ~ e# B2 s4 i8 r8 a0 e/ E if energy <= 0 [ die ]
3 C7 U4 n% j" ~& W4 W5 D% X& Q ]% S1 [ a7 n! n
end- p( x* K4 T" W, z3 O, G0 ~) e
to regrow-grass
) w$ c$ ]2 j ]5 P! h, u) H ask patches [( x# h8 v2 D+ W$ S& r$ V" L. S6 B
if random 100 < 3 [ set pcolor green ]
' _1 ^! |8 R, B0 B: C ]: N* u- C- k; P+ G0 { P! N
end
0 Y0 S! q& n! K; |& N( d+ i$ ?to do-plots
2 [: b7 p, I7 {7 y0 s V f7 ^% D set-current-plot "Totals" V+ }& n- M9 h# i3 `% p6 G
set-current-plot-pen "turtles"
+ w9 C3 w. B* Q0 K: A. j/ ` plot count turtles: x J% `6 f) ?+ ?
set-current-plot-pen "grass"/ A# x; N3 e6 o3 _- K. S
plot count patches with [pcolor = green]. s8 o i8 U4 D
end" X: Y3 K: M2 H; I$ ~0 t
可是运行时提示no such plot: "Totals"5 O9 |1 h0 a7 M; y0 ]: E5 H, `
error while observer running SET-CURRENT-PLOT# a; r, y, r9 l1 z0 N
called by procedure DO-PLOTS
5 S5 ?' f3 Z; v5 ^4 L/ R5 i- H4 ] called by procedure SETUP0 z) j# L2 P+ }2 G- X" u1 F
called by 按钮 'setup'4 g( B) t1 Y3 X7 [
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
