我编的程序如下turtles-own [energy]
/ ]( l: J3 }6 n+ w! ito setup5 m9 h. k: `9 S9 S* e* `0 [9 q, b
clear-all; o9 Q. j7 x% z, T: ~
setup-patches3 O5 t' M: b3 y) {6 s
create-turtles 100
9 x: ^: E0 g7 o/ o/ N! q0 b- @" O do-plots
G E/ c5 R: U) z' v ask turtles [ setxy random-xcor random-ycor ]: |, l# J; h0 M
end
7 L+ A1 d. h3 _ M& m' _4 E1 r! ^to go! p3 J7 s' _0 f% N" {6 w" ]7 i8 d
move-turtles- g1 b0 e- ]9 _
eat-grass/ _7 E! @8 U6 E) h
reproduce+ A# j/ f# x: e/ D0 Q) n
check-death
: n- Q0 `6 r% W4 o regrow-grass! I" Z. N" P' U+ i" l+ m5 M# P
do-plots2 N8 P' ]1 F' \# { `. C* D) v( p' u4 R
end
; B- e/ A) q7 {) S* G9 C3 dto move-turtles
) c+ I- P# O2 \$ {9 r. R& h$ D# V ask turtles [- H2 p/ n- J( j7 F2 s/ j' ^
right random 3607 F) c' Z5 j1 c0 R" L
forward 1
! A3 g. {% m% X7 z! y; u4 B# ~ set energy energy - 1+ v& a8 S# s0 r/ ?( B4 A
]
2 l' M- j+ D% y7 y7 Q* ^. _end
0 D3 V2 L5 `8 m5 c* Ato setup-patches( n6 v3 T Z- D+ s1 D' ^
ask patches [ set pcolor green ]
5 f- ^: k1 S( Y1 h( ]% zend
) A# R+ f3 }; f; _( P& D2 Lto setup-turtles' H9 Q9 p. z5 V' M% X3 d( f
create-turtles 100
# `+ Q5 ]; p. I4 G+ B8 X ask turtles [ setxy random-xcor random-ycor ]* C9 y6 w- o! p$ f7 K+ H! k
end
/ C4 c! t/ x5 Y3 K2 E4 cto eat-grass# S% F# K! B& l
ask turtles [0 W# T* v$ m, B% n; x
if pcolor = green [
; _& R! W+ B8 z5 ]1 @% s. o set pcolor black- x: s& x! @ s
set energy (energy + 10)
2 [. u7 J( C7 Z3 M ]2 P( ~5 T+ a* m' }
ifelse show-energy?; ^5 p9 N0 c8 [( ]% y
[ set label energy ]9 h" z/ \' f1 n" z+ [& h. p2 y
[ set label "" ]4 j" G/ u, P. y* ?* `- E
]
3 f* b, Z9 `3 P. {: Cend
& k* y8 f# A5 F* s! xto reproduce
* ]9 e/ a9 x& C" g f ask turtles [
' i! l7 v# r; S8 y3 }& Z: K1 { if energy > 50 [
* ?# h$ a+ A. s* W! `8 ? set energy energy - 50
+ Y2 o8 K( o" n( r v hatch 1 [ set energy 50 ]
( n6 F1 U+ Y* \5 c ]
. o4 N4 H R' x. a1 P' |& B/ p& ~ ]% P* w' u+ e, T& F9 @; g
end
% v- b+ s( |- a7 Ito check-death
$ f6 M9 b0 d- v# s- i2 } { ask turtles [
* |: [( t' B( K3 y if energy <= 0 [ die ]2 X' D8 j- i2 c) X k. h4 ]
]
v u3 \8 }7 l0 b9 O6 W2 c; Mend8 [% x0 V3 `2 X) [ T5 X
to regrow-grass8 R4 O8 i; [+ x
ask patches [7 y) S; ^0 G/ C+ O; @2 s
if random 100 < 3 [ set pcolor green ]
# B; R1 e9 [* U/ _! J. A; o ]% X# j/ l7 b" z' d, X
end
9 l9 I4 u# g0 V& X* mto do-plots/ q& s6 q: b( w$ w$ ~8 G0 a
set-current-plot "Totals"
, a8 B: H z3 r8 b5 T set-current-plot-pen "turtles"
5 V5 C7 z% V4 x& F% V& e plot count turtles2 J. j. u ? k$ T3 j+ Z
set-current-plot-pen "grass"
, H, V- V {+ K- U) \; X6 { c) [ plot count patches with [pcolor = green]
/ `8 M, W# n( T! B& Vend
& l8 y# B, a" I5 J9 s可是运行时提示no such plot: "Totals"0 _! l+ m9 v) h% u
error while observer running SET-CURRENT-PLOT
/ Z0 R+ T$ {* D2 \* V called by procedure DO-PLOTS1 ~8 `% B5 K( d, G6 h) m' u
called by procedure SETUP
3 h& ^6 y* C; Z- G; s called by 按钮 'setup'
/ U8 E% Z6 m* _0 Y求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
