我编的程序如下turtles-own [energy]
! u' g) e" ^ F' n" i" Y; Ato setup b8 W3 c [: P3 y0 K+ @; ]% S" P7 [- P
clear-all! `2 x/ ^1 a+ O
setup-patches# V& s$ M; M- `% f, u
create-turtles 1004 I8 E c' k9 `. Q) w$ T$ D
do-plots5 t, l$ @" j5 x9 o3 n* D" N" d: Z j
ask turtles [ setxy random-xcor random-ycor ]) F4 e- h$ u; j& C2 {6 g8 s
end+ D0 K0 p* H9 u# [* v5 X# Z
to go
+ P/ E2 ^* d: v6 q! l. \3 _ move-turtles, J9 `, O' k' `9 m; y/ d
eat-grass
4 V: A, L* O& H# _ reproduce
% f7 c/ s& E8 L" M check-death1 `$ `* S- I c5 s( [
regrow-grass* @2 e" ^, F- }% |" V# D8 X
do-plots
, l! j" Y: b8 u; Y9 s/ qend
( k S1 ?. O& e+ {8 nto move-turtles
* Z, t/ q ^" ~6 e1 ~; g, a( u2 C ask turtles [6 g" C! o# f. v8 K) t
right random 3604 U' l9 S% t0 l) u* p- h! ]3 G8 s
forward 1
" H) j* i* n' p/ p. b+ B7 J set energy energy - 1
! V1 [4 U q E+ Y ]8 F( b: d% C+ B: C8 l
end
2 T! f& N4 p p. oto setup-patches' {, K, y3 @, \0 o
ask patches [ set pcolor green ]9 T i. h, R% L5 z0 f) A9 A# | n
end6 Y% ~/ i, J* M a. U3 e3 {* S+ o
to setup-turtles. n" T6 l$ M( Z
create-turtles 100
7 z9 e7 ]0 b; o9 a$ @; t1 j6 E5 J" [ ask turtles [ setxy random-xcor random-ycor ]$ ~% t3 ]/ ]6 Y2 H8 F+ G
end
" ^/ @* ~2 I, g# ~. C6 V0 Rto eat-grass
9 `; F% h5 O7 q+ H4 L1 I6 D ask turtles [# G ]5 k: X* L- C
if pcolor = green [% f, J* m) {6 ?; P
set pcolor black
* k1 \0 q/ T J# T$ F8 S: V set energy (energy + 10)6 c+ m9 o& z5 I; F, V( G
]
( N! u% B' B# x0 f/ u3 Z& S! D ifelse show-energy?6 P' ^% O, V! _. ?5 v
[ set label energy ]- _1 v( h! a4 t9 {6 B5 W6 z
[ set label "" ]& u+ \4 `" A0 a+ i9 r* E7 L8 k1 s4 l: ^
]( s; n5 H) @/ [5 z! \0 J3 c
end
3 j. B! R/ X. L+ u! |8 Yto reproduce
$ K0 @: J! Z0 S5 ]+ V ask turtles [4 b# d7 [: K1 S
if energy > 50 [2 ~/ d/ ]& ?( Z: l
set energy energy - 50
" Y4 A5 s' D7 h; U8 T) C3 ~ hatch 1 [ set energy 50 ]3 ^5 I% y0 s1 H" G. a- _+ Z
]4 A% W3 R# g/ T1 v
]
8 | @! V Q2 q3 g4 Send
7 C: P; Y) Z& l7 G. H2 Rto check-death `" r2 |' k0 S! r% c* k
ask turtles [
# s$ t5 B$ W4 q2 Q0 A* l if energy <= 0 [ die ]. D# `; G* x" t! e8 F) x: ]+ n+ ^0 y
]
. ?# @( p8 B# H1 g4 Vend0 ^8 m/ |' v* G! P% m& s
to regrow-grass
8 u6 F8 G% q- X( s ask patches [
; A0 Q5 c* @+ O5 h0 |* ` if random 100 < 3 [ set pcolor green ]
* v0 q) P. B9 }( f: j ]6 p- Z7 ^9 f* e# f, K7 S& K
end' i/ e# H* a$ z- w% o
to do-plots
5 i5 a# ^2 n8 k7 {% N1 Z set-current-plot "Totals"# y, P( D7 u' B1 o7 w; P
set-current-plot-pen "turtles"
- c3 Z+ ^& G! y M2 @ plot count turtles# O1 Q I$ W" k* W& F8 i. |/ Z3 v
set-current-plot-pen "grass"; X, ~' }5 H& E& j, `+ t
plot count patches with [pcolor = green]3 G3 y4 F1 @. P& u. A
end
4 H& \% D6 }: f2 ~- F) r, q8 Z可是运行时提示no such plot: "Totals"9 @$ Z- M' t* C/ `
error while observer running SET-CURRENT-PLOT
3 U4 x, @, w* C6 ^' o called by procedure DO-PLOTS
% {+ \" K" X- j- N$ L9 f called by procedure SETUP
3 g4 h! O' a/ ~9 o2 z# x1 N p called by 按钮 'setup'
5 N# J0 M+ O9 G5 u$ x. _0 `求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
