我编的程序如下turtles-own [energy]7 I+ z* C3 h* ?* b" T" M
to setup
0 S) @( H. ^# c1 z$ l+ x5 [3 O2 i clear-all
% i* r+ i5 @; H9 _, H8 ~ setup-patches( d5 A0 J7 M! q6 _' l$ o
create-turtles 100
9 g6 J) X' U5 \; Z, N do-plots
8 y. n3 a7 L3 M& I% k ask turtles [ setxy random-xcor random-ycor ]
4 F. s) d3 n" k( u" |% O1 E! Mend- X$ |1 ?; y3 Z, h) v1 u% ^* \
to go' h* c$ q0 l1 ^* D4 G/ k& r& Z
move-turtles
2 O/ N9 V6 \% E( y$ E9 ? eat-grass
& O- H$ q, D* n! m6 ] reproduce7 M) W: |/ u! N
check-death
, g$ d/ c6 U; [- \- W7 `' ] regrow-grass
9 ^! j5 w% u- w8 \, x3 k do-plots
% o6 \% H5 {* C- D& Mend
7 A% D w3 J) ?1 M8 p8 p6 x! Y' kto move-turtles R. M% _/ x" V8 r
ask turtles [ t) N0 w( q3 @4 G
right random 360/ C, x! ]( s; S
forward 1- Z7 J& c+ [) A t
set energy energy - 1
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end: D2 {4 ^% J# x$ E! ^# j- r4 t1 V
to setup-patches
" T& m4 I+ \7 Y4 I3 q% g ask patches [ set pcolor green ]4 y% ~' d( L6 @2 e) P& ~" U
end
* v6 T! v% i; J4 ]. Eto setup-turtles( q d; t) ^7 Y* r3 T# X8 @
create-turtles 100
5 F+ v% _+ [! L2 L+ h& P* F ask turtles [ setxy random-xcor random-ycor ]8 `) E/ d7 u1 k
end* ~4 K. a0 J4 v8 p: N" ~; u
to eat-grass
* Y+ o0 r2 T4 j0 X4 m ask turtles [$ L! |4 V, }7 u- z$ P' b
if pcolor = green [
, q( x& b: Y4 V( F) _! Q set pcolor black
' N. m' d" F2 F8 P set energy (energy + 10)
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ifelse show-energy?
/ U+ C" e: K! U% B7 B [ set label energy ]
/ v% g7 H% M# J. ?4 J3 D- W [ set label "" ]
) n+ X/ w* t' ^3 ]' w. h8 y ] P. _, N, C) f |* e4 Z$ U
end
+ ?- b+ s" V! j0 j2 Mto reproduce) `) Z$ J( P( ^% J2 W
ask turtles [
; _1 j" }4 l6 w7 ]$ l' G( n6 A if energy > 50 [2 i) s' J$ N) h9 C+ R; a& ~
set energy energy - 50) k( R/ }: ^ p+ ]/ i" ]
hatch 1 [ set energy 50 ]2 d) C* f/ U. J! {0 m8 f! H
]3 m7 R6 B# J- M; F
]! I- H8 \, J9 i. v* p W
end8 [8 [ ^; |2 F0 \: e
to check-death+ \% c/ P* a# r2 E2 [8 |# k
ask turtles [8 b: L% @( M' E
if energy <= 0 [ die ]
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end, t' L8 N' C; I) o) M
to regrow-grass
_9 w2 Z' Z: w ask patches [7 @+ N/ t1 V6 L; q7 s
if random 100 < 3 [ set pcolor green ]4 U5 t7 b# E8 t9 V% `2 N1 b; ]3 X
]4 E" ~- A3 G$ Q, ]2 Z2 t
end
+ q' p4 a! S0 R' B0 B9 i( zto do-plots! o5 R0 }& P2 @" O
set-current-plot "Totals"
6 t! Q x d9 B, k; z5 C7 U set-current-plot-pen "turtles"
I }# r% ]! i" t# P4 H- _. f+ F plot count turtles1 @0 |: s* c" O4 n; c
set-current-plot-pen "grass"
+ N _$ P4 H: U/ H o) e# z* p {+ O plot count patches with [pcolor = green]
( I- ^- X7 t& Z" _# k Cend
" Z6 [, T6 {! u8 h9 n }' s可是运行时提示no such plot: "Totals"' `% |2 r8 W" Y7 P
error while observer running SET-CURRENT-PLOT
/ |3 w2 T% J: [0 r8 m called by procedure DO-PLOTS
1 @! p# x! H n. o1 @4 T called by procedure SETUP* J3 w6 s0 W6 X, w& i8 y: P
called by 按钮 'setup'
2 i* Z0 ` p1 W, [$ s& z/ H求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
