我编的程序如下turtles-own [energy]
5 L* b* z( O# O+ c- W+ Q eto setup/ x' }" o! f8 A1 C
clear-all
K# | M* j3 k! d7 C+ x0 [ setup-patches
4 X( ^% N5 v/ D7 C: X create-turtles 1005 n1 D1 {& k+ [: a# X
do-plots
5 p( @- K* C9 E, \0 K7 {1 S/ S# g ask turtles [ setxy random-xcor random-ycor ]
. H3 z* `+ b) c! V7 R3 J- |end
8 P- ~- t6 H; t/ c, j3 Wto go0 ~0 d& v' C3 K" r
move-turtles: R. t7 ] n; e
eat-grass
2 ]6 V9 h& X7 n/ O( D5 k# T) {- V reproduce7 @4 ?" ?5 I6 b! E0 C9 s
check-death
, O4 ^; S' M+ q# t6 e: j6 ?0 e regrow-grass# L6 \, ^5 h$ F) m
do-plots! e0 F2 `8 I) g2 K
end
! v1 o0 K$ A& S4 h% \* B7 E0 sto move-turtles
! L! j/ q% d" ? ask turtles [9 ]8 w7 ]- P# z2 [6 s% e
right random 360
* q- H% A% M! {5 a) q1 w' ?8 T" _ forward 1- U K3 Z+ E' n: V5 ^
set energy energy - 1
/ b& [3 I& K: a# J" Y. b ]
' }7 G5 ?6 ]/ Q: i5 \ Tend9 d" {4 B$ [& d, @: I( R& n
to setup-patches; F( c, h( J1 G8 O
ask patches [ set pcolor green ]
% e2 p7 r, N7 x. Y4 C, Q0 jend& Y5 ^+ A$ w" _" }# s
to setup-turtles9 r G+ R2 C# h- ^5 y
create-turtles 100
# N. [" \- I: t+ R; Y* | ask turtles [ setxy random-xcor random-ycor ]
) y. e, d. ]* d9 I; t* gend
' [) |) F8 c9 B6 h7 R1 zto eat-grass
4 G O5 s' X1 f6 P* F* l# n! o" c; w! E ask turtles [3 x1 e' S* l6 T2 `
if pcolor = green [. ~* L& ]# S) B
set pcolor black! \9 Y' T8 N1 z, y" X
set energy (energy + 10)$ {* {* p! b. z% F' S' ?
]2 u, l( I. e( @6 h# u' V v
ifelse show-energy?6 c9 b" \5 \0 z8 [
[ set label energy ]4 I/ G; d% i" K5 X% c. o9 |* R
[ set label "" ]
: `: e8 e! J* N3 l( l, k( m# E: m4 p ]
: v' | x& e( h' ]1 [& ]end
/ o" P' [* W1 L5 y/ qto reproduce
6 N! I8 W" R6 m ask turtles [
0 o2 R; U, L" J# { if energy > 50 [8 u6 G0 t9 p ]3 m$ T' E" R! V
set energy energy - 50
# q) C7 k/ E: X0 {4 Z hatch 1 [ set energy 50 ]1 m- C4 o# ^0 w/ ]6 y8 [& c
]
2 K2 ~& _4 G( P9 i ]
) z9 x7 t/ Z3 u, i2 }! Y& ^end
/ o# v% j3 ]! w1 s! H, ]# k: k/ Xto check-death
1 C, k, j# c9 J, Y ask turtles [
: y+ n5 Z# | `& v2 ] if energy <= 0 [ die ]
' Y* E7 B0 x7 `" ~3 _, O. p; f ]
/ [$ u# F+ |% kend7 h0 E+ n+ M% c! [
to regrow-grass
/ q3 N( g3 |0 {: ` ask patches [5 ?- u0 Q6 V- a- ~3 h9 C' k1 h7 X
if random 100 < 3 [ set pcolor green ]
$ v% g! g/ e- ^ e5 Y ]
0 {1 }( W O/ P" I! J6 G5 [2 {$ Dend, T, z$ L! W: ^+ j
to do-plots
3 D0 N' g) ]2 H set-current-plot "Totals"" \ h" ], o" ?8 L* U9 y
set-current-plot-pen "turtles"
5 B( u+ O% J" a2 u! h( |3 ~ plot count turtles. ~& t+ U1 N) k" b4 }
set-current-plot-pen "grass"* H) l2 V' T2 W b/ {6 R
plot count patches with [pcolor = green]/ L7 z0 e' O! {! a; X3 t8 C
end I4 q8 W/ _, F7 r, d M& v
可是运行时提示no such plot: "Totals"
7 q6 G# \0 f: z0 \( herror while observer running SET-CURRENT-PLOT6 }3 {" [1 F a' t) Q
called by procedure DO-PLOTS
o, u3 z9 G: c) G0 i' Z called by procedure SETUP7 w5 l* ?/ A' g% w/ D* @% e
called by 按钮 'setup' o; N) W, v6 H/ M
求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
