我编的程序如下turtles-own [energy]
: |6 X* P4 f5 J' i$ w5 _to setup
- Q' h# g( t5 n$ l4 { l/ M* j3 ]9 t clear-all% h" U5 v9 ~0 q0 V: s
setup-patches U( {8 Q2 o) Q! _
create-turtles 100
% ]. D6 s7 b: V4 O- L# u& x9 ? do-plots
( f/ M2 u+ f9 Q3 j# I ask turtles [ setxy random-xcor random-ycor ], i0 |* d7 R l9 s; \, O
end
$ F3 n+ d. [; \. O6 r- `to go/ S6 ^ H7 [" c3 C! a7 N% J& _
move-turtles
6 p( j. M t0 r eat-grass. ~" \% i N) e
reproduce3 y$ ]0 K8 X( p8 j$ O! f# G0 I
check-death
8 E: h2 ^4 E0 ?" S regrow-grass" j$ z2 T: S7 a6 j: E1 e0 t- V) Z% @, E
do-plots
2 k" ?! Q4 P' W4 b" B: q( Mend
& U% t" @+ a) \0 f, oto move-turtles
# D* ~3 N8 X. ~. t ask turtles [5 G5 ]( K* j+ e
right random 3608 O" Y1 ]' w! T6 ~ d! p
forward 1
) l, P) I) b, }+ C0 I4 d' J- K set energy energy - 1
9 b- z( s) F, z; G. ~- q2 G' h ]# ^1 H2 D- c8 R! @- U: L
end
- a2 k$ b$ F7 H" Sto setup-patches
- v& g, ]; g) T+ k1 u& v ask patches [ set pcolor green ]% F- E, U5 u/ J, ] B
end2 R* b" Z# y/ E' s2 o) e1 S& a
to setup-turtles1 D* ~# V# _5 W& d/ u
create-turtles 100
9 |' S5 M0 F h7 a ask turtles [ setxy random-xcor random-ycor ]
& } X5 L j# r w5 Iend
& R' ]' s+ h" Z- e# M p. ]to eat-grass* n/ s" Y/ {' L. \8 q6 }
ask turtles [) e" E# g0 B4 R; Z6 q
if pcolor = green [
) I2 R. @' M0 }9 [2 V. I4 @5 T set pcolor black
2 t* H" l2 O" O! @: `7 k0 g! M set energy (energy + 10)
3 F" r1 }2 h" t" i$ K+ \ ]# R# r1 S& I& L# `% p' \
ifelse show-energy? i$ l4 M7 h- e0 [% s9 R3 G
[ set label energy ]
6 y9 l5 G$ R5 N. ]/ b [ set label "" ]
6 T# a6 @2 y! r" Y ]
$ U! C/ u- k9 t$ }4 w7 C) Jend
5 y8 @5 `8 M& q5 w, R2 M) Q4 Dto reproduce6 T) ~; \+ ]) H, L( b4 N
ask turtles [
; |- o& X# r; E& @ if energy > 50 [- S" v; |% Q* X$ f6 b8 E0 Q
set energy energy - 50
3 Z1 f, s" D0 N hatch 1 [ set energy 50 ]6 Y0 I0 X, e5 {" v
]1 ?3 T- ?& V4 H1 ]1 Y
]
. z8 [) W) B5 [3 P& e' m9 r! _end7 g& E! d# D1 q, i
to check-death
/ [1 q! z2 ]. @& j V# ?6 r ask turtles [( W8 a3 j2 r# u9 ^7 c& {# ~5 a; [
if energy <= 0 [ die ]
! r0 Q' L( B* ~ ]
) \( H/ E* q/ O# [" [9 nend
s1 B! e; k: {- ^( j3 w' Lto regrow-grass$ b! N) W% @3 }/ f- J, m+ ?& s! `+ @ [" N
ask patches [
7 @6 F$ u! l+ L* W4 Z/ H if random 100 < 3 [ set pcolor green ]
) J- t2 C, o& o: I$ M7 Y! {9 L' l ]
; r" N# V8 o3 W; `0 W1 [7 @end, m8 ?- J4 d2 o" L- w
to do-plots
8 g" q2 }6 J- i4 k; k set-current-plot "Totals"
: x6 i$ B- K, I6 }3 V2 H2 l set-current-plot-pen "turtles"
1 v/ R, f( U% L c plot count turtles
) S$ _" y( \* }& j- \ set-current-plot-pen "grass": c- R b7 }1 g- F m
plot count patches with [pcolor = green]4 S% \ p. ?1 C* V; k3 H# r$ d
end
6 K2 C* e g" [. x9 V! {6 s可是运行时提示no such plot: "Totals"
3 R' h. T/ x' `5 T% yerror while observer running SET-CURRENT-PLOT
! x& |) W, u: i4 o' n called by procedure DO-PLOTS
0 n- {: w9 h% b/ Y3 C, @8 R called by procedure SETUP- D2 d( l9 b, E5 G1 w
called by 按钮 'setup'
( D: [$ U$ ]5 O求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
