我编的程序如下turtles-own [energy] e0 O( _1 g, F4 Y% _4 z
to setup
# u9 C1 Q3 n4 @4 v: n clear-all2 D" l+ a( p! l1 P s' M+ p, P
setup-patches
j! m2 k: {/ R* f, g& N5 t \$ r create-turtles 100
8 d6 ?- e/ n. q( Q9 A: v9 D( f do-plots- H" q* P8 @% K7 y
ask turtles [ setxy random-xcor random-ycor ]
. A7 b! U; O ` [end
3 v% J8 V1 @+ t) |to go
( o5 F) r7 m0 R% D move-turtles
8 H9 w. ?+ T1 b5 M, A* z0 G eat-grass
u' g& c3 k7 d* Y$ {. z, u reproduce+ w; G2 ?6 v2 ?; z
check-death5 {* d0 a, c8 D& Q
regrow-grass
5 R6 E0 G7 e! N do-plots
4 C, B' R2 e/ M! g! Q% ]end
; U+ Q. _ J# a+ |, k, ~to move-turtles
( B ^9 k* G5 r5 x ask turtles [
) D! s0 E- S" M$ n1 ~2 c right random 360- Q6 \1 r, m0 A' X
forward 1
, l* J9 C o4 J2 h" j" ] set energy energy - 1
& r, k1 i1 c- j3 e5 e4 V- Y2 y# X ]
( }6 s7 R' M& Gend. ~% o' b0 n4 H2 n1 {: h: L
to setup-patches r! X6 u' q0 V& ?; \
ask patches [ set pcolor green ]
) j5 {& @+ D& P, { ]end5 ~: |+ b O! o l
to setup-turtles
, W5 p7 M( `0 v$ F create-turtles 100' ]5 K) R" Q! \
ask turtles [ setxy random-xcor random-ycor ]) E$ q/ M$ v4 ~& b2 y3 U7 Z
end* p2 r% K; W3 b& a6 M
to eat-grass5 i/ W3 t& |# Z
ask turtles [# ^+ B& c7 u$ b
if pcolor = green [! ^' C, B+ p0 \
set pcolor black V; l5 M: L9 d) f6 M4 ]/ D$ M
set energy (energy + 10)
# H. Z8 b T p% I. \ ]1 H) G0 e* f4 f3 a- ~1 T3 Q
ifelse show-energy?
, H# | b0 A' y, i" y$ n [ set label energy ]) m9 K' s2 @9 h
[ set label "" ]0 h+ H9 j- U+ I
]
- u( P2 V, l1 v( T: v. @5 rend$ w, b" }6 P7 D' Y
to reproduce- a, N+ ^+ }# U1 M* j
ask turtles [7 p# X5 B3 j. Y4 G" e
if energy > 50 [
0 k* v1 J2 j$ \1 u4 S8 I set energy energy - 50
) T7 C$ M2 A- S: P) ]3 m5 H hatch 1 [ set energy 50 ]3 L4 A& f, Q. H% \ j0 L2 W
] n* K% f0 Q; {- u: h
]4 @) D4 S2 O0 K4 n& `) d
end1 _4 l" K! p8 y/ S. T# `5 ~0 [( j! w
to check-death
" \5 n2 J& F5 M ask turtles [
2 b( W; P' Z! B# t: z9 u; |- M if energy <= 0 [ die ]5 Y* s* o7 p9 O9 V, W& @, m
]+ `) E; S( W; S
end* q* n3 i5 }( A5 d c7 u; b& e
to regrow-grass
1 J6 l+ M* F6 B9 n7 e ask patches [0 ?4 R& i0 D) m9 g2 {, l) v
if random 100 < 3 [ set pcolor green ]8 }3 j1 N% L; M# R* \
], Z/ M+ s. J& a0 o/ t
end
" H6 C2 V4 q" f% Q3 r" ?to do-plots
4 C6 i. J7 L' v7 R. t: ~, l set-current-plot "Totals"
( F( D( f2 c& q* t set-current-plot-pen "turtles"
3 j# V2 N2 W& K2 r. A' I; Q: a- k plot count turtles
) J" C( ~: D* [* c0 ~3 c+ g set-current-plot-pen "grass"
) {" a8 X6 @& P) ]- |8 G& Z plot count patches with [pcolor = green]- G6 x' j5 k$ F+ |7 R! {1 Y
end
/ @$ G/ S' h, e4 m; t m: i可是运行时提示no such plot: "Totals"9 C4 V( t& y0 ~* [4 w% t
error while observer running SET-CURRENT-PLOT
3 u$ F6 p. X* P: j. l: | called by procedure DO-PLOTS$ R9 ?9 j: `% _
called by procedure SETUP
9 s$ [9 w' R2 {- \& H& ?! d$ W called by 按钮 'setup'
) O0 _' \0 I! _/ I求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
