我编的程序如下turtles-own [energy]
) p% p/ B/ W8 Z' S& M- pto setup
2 Y D1 e( k9 Z clear-all
/ a& n8 E- P- R3 D- u setup-patches# S& b5 ]. A9 y
create-turtles 100# s% o" J' z0 {9 q5 ^
do-plots/ N) W& t$ I3 R! Y! _* p* ^3 F
ask turtles [ setxy random-xcor random-ycor ]0 G ?( M' t* K T& L6 ]
end
) J9 {7 S) O" a- l; S7 oto go
# o6 }% d" O6 m( x: H! X0 o move-turtles
/ n' W4 T n9 z eat-grass
! H7 M4 H# N* H% r' _6 A; R reproduce! ]( o j0 Q9 m8 Y3 X* h
check-death
A: h# W; h% y, E2 B regrow-grass9 h' f) B" }. D+ [9 g
do-plots n) F7 l0 _, V& A4 _& v5 S5 W
end
( c4 O/ M: m; o) E. k. N% M& r% qto move-turtles+ a+ s! D+ b$ c0 T& [% ^
ask turtles [
d& w6 y' R! Z; F: K' g right random 360# B& r) y" \" t7 l# A! M7 E( y8 a
forward 1
* R6 J: O5 }( h" ?" L# o* u set energy energy - 1, |# i; S( Z4 I) K1 Q! A V
]
4 V2 A% i9 X5 |* n* Z6 j. hend5 r, Y* V5 F4 S& r! g8 A
to setup-patches0 c( Q% |+ V' J: \& P
ask patches [ set pcolor green ]/ f g9 `9 Q2 n1 l% X( B# B* j+ L
end
* S, K& }. y6 b' oto setup-turtles$ @4 b- U( q0 r: h4 K/ U' O, ]
create-turtles 1006 P- m% d3 z% B$ _, |3 ^" A
ask turtles [ setxy random-xcor random-ycor ]
$ s K* C0 C# K. p& u' gend
, s, m# f, G8 ]2 v& ~* `; jto eat-grass: U v& T/ T! a' R8 c; s: C
ask turtles [
1 q: `& X; ^! m4 A if pcolor = green [
; s' J( E' `3 q( B) H set pcolor black( k/ T0 Q/ k& a% o
set energy (energy + 10)2 r2 g z; d" m3 a8 O7 e8 n
]4 o4 P4 R4 N9 d( _: p
ifelse show-energy?
3 Z( Q- k+ e* j; |6 c" p V8 I- ` [ set label energy ]
" _7 Y- @+ q8 _! Y6 n [ set label "" ]6 [% l/ `' K2 x
]
) s4 A: \/ v# x2 w7 v2 wend
# R( E0 r, o& x8 o' Jto reproduce4 q1 L- S8 B, y
ask turtles [8 t) x r3 K) G8 @0 L4 T9 ]/ d3 y
if energy > 50 [1 p% k& e( N' a. s' h% a
set energy energy - 50
$ U: u* j5 V! \( K j4 } hatch 1 [ set energy 50 ]
. h. x ~$ h% F S ]* W0 w# ~9 J b2 T6 U- T* p: J
]
+ E6 k) d D- e1 Pend3 f* s# |4 k0 C. s; a& N' H
to check-death
; {& l( M3 H2 Q- M ask turtles [
9 X" b3 F$ v2 p( b$ \" U if energy <= 0 [ die ]
I, x& ~9 R- U$ t* y5 R" C ]
1 g: e& W, T. R B& Tend. W5 i3 h9 k1 R2 ^# W
to regrow-grass
; g2 S2 r7 q9 y2 O ask patches [2 W# m/ d: d/ m, j- F1 g" s
if random 100 < 3 [ set pcolor green ]! o, g9 L/ q0 v# X( f! d
]
# V8 [8 h$ F5 A k/ u0 eend
( b- u& y4 I* i( e* A1 `, H1 yto do-plots
7 }6 g& u' C# `% a5 B |$ L- F, z set-current-plot "Totals"
2 L5 t5 L, ?$ n& ]8 E set-current-plot-pen "turtles"
) w. O2 k2 w6 g: a2 F plot count turtles
( R7 J/ o! h% |2 i8 b# c, B set-current-plot-pen "grass"5 z0 M) ?0 ?) n( W9 o9 q
plot count patches with [pcolor = green]) w- D6 S9 R/ F. x0 z
end
. W7 g9 r8 J( q& U+ v可是运行时提示no such plot: "Totals"
/ ?0 ~! D- x9 c( ferror while observer running SET-CURRENT-PLOT
8 W' _, y$ A: n- H6 } called by procedure DO-PLOTS
) c) t* q) Y' s* Y called by procedure SETUP3 o. e6 t- Z6 ?' ]6 C" e
called by 按钮 'setup'* i7 @: _/ i9 s2 `& `4 f2 F
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
