我编的程序如下turtles-own [energy]
* Q! x; Q* ?1 _, \* x3 N; t; oto setup x0 ]* T3 }$ ?( [
clear-all
) [+ k# k( u3 n) m" B" B setup-patches
" B! U" v- ]& W, { create-turtles 100
@ D% |# _' v/ s) U' c do-plots; B6 D; z Z3 V& r7 Q9 b; J
ask turtles [ setxy random-xcor random-ycor ]" @8 S! Y! g- n7 F3 ~$ F# ]3 @9 |
end: F. v+ }+ e% g, T F8 o! V+ |
to go2 h9 ` ^' X- y8 f0 u9 \/ n
move-turtles+ H$ I' K, j: I& o
eat-grass
: k9 R% `0 ?) J! @/ q# B reproduce Z" e9 W/ y3 O. X2 M) x3 G
check-death; X8 Q+ N6 o$ T( U( r5 d& @! x
regrow-grass2 T8 t: o8 j- }- U, n% C" F
do-plots8 W& o7 k6 ] I J/ g# [7 E( i" a
end
* U/ }0 `) z2 L$ wto move-turtles' C6 p. U8 Q; Q Z4 W
ask turtles [* `9 a# M% c" b" d" h
right random 360% d2 L, d- f t* c2 d' X e
forward 1+ b7 B; V5 f7 i: W
set energy energy - 1' v1 K, |/ e" H3 p$ V' q
]& H5 a, V0 {% h4 W
end
* b7 |1 | |. B; r( bto setup-patches
- f% c w, r5 t! n) D ask patches [ set pcolor green ]
4 B8 R! E+ }- |' _0 a0 _4 S& o2 n9 T3 nend3 p+ y6 W$ @6 a
to setup-turtles8 U3 @* I4 g+ ?7 M1 c/ J
create-turtles 100
+ o9 g/ d2 A2 }1 o. q+ C ask turtles [ setxy random-xcor random-ycor ]
9 }4 T% d7 y6 o8 d' Aend
( @; |0 O: D5 T, cto eat-grass
7 i* P9 ?1 x. F: w/ u+ i2 M ask turtles [, p' h. j4 t" `
if pcolor = green [$ T/ i% Y- ?. W* j# t: N
set pcolor black) K+ u' }9 ^; m/ y
set energy (energy + 10)
% U' w p2 A" [/ C ]) Z+ ]+ m! {* E( x' F
ifelse show-energy?4 Y8 a; I/ Q5 \" C4 X" |
[ set label energy ]7 ~, X, y7 ]9 r1 g6 g* v5 U
[ set label "" ]% [- A6 t% U# z/ U$ b% u- e
]
" G$ \8 z0 V( s) o# Fend1 H/ Y) p4 o) W" J
to reproduce8 t. L* {8 L! {3 Z; I
ask turtles [' R9 b0 k6 s# B) t
if energy > 50 [: D2 u* C( @; B; g& [/ J
set energy energy - 505 }! O* I1 a8 j. r
hatch 1 [ set energy 50 ]
* {) C h& S' ^4 p; U ]8 S' j, T5 T5 ^5 |& ~" q. }: E0 A
]
# C, U, l: n9 c' w F, w5 aend
7 `6 x i. Q, G7 \5 I2 G' Dto check-death
6 S' w# @; J" P5 W: Z( z" m+ ~ ask turtles [) x4 `9 s4 k+ Q- A1 W: {
if energy <= 0 [ die ]0 V+ C, B; G2 c& H) z$ h
]
2 b" b5 r1 J# x& U# l3 K9 `' k6 Dend
8 @6 J1 g" z9 e3 h) w7 K9 Vto regrow-grass x' ]5 c; o) |9 U* J. @ a
ask patches [
, e! ~: e6 f* \0 `" D# g) J if random 100 < 3 [ set pcolor green ]: t$ L7 I7 _ E c" g. d" o
]7 S5 Z+ V( V3 L7 I; h
end/ ^6 _# D+ W6 o( e6 b# m3 M0 M# v
to do-plots
, n. N j6 N. i8 @! C# X# N set-current-plot "Totals"' s. k* z1 n! w/ S& ]2 ?3 } L4 [
set-current-plot-pen "turtles"! R3 W2 n$ @5 P0 b
plot count turtles8 E, d5 [1 S4 U' o" Q
set-current-plot-pen "grass"& m1 ]$ ?& Z, C1 x1 p
plot count patches with [pcolor = green]4 }/ [$ o' @: L4 }! H; ?) s
end$ y2 K( f2 N6 N+ Z2 u
可是运行时提示no such plot: "Totals"5 g+ ]' `' ?5 I
error while observer running SET-CURRENT-PLOT
! }/ U- A6 M% v1 J* s" {3 V called by procedure DO-PLOTS
/ d1 H) G: G* V( V+ M called by procedure SETUP" U" E0 J- H8 \$ S0 [3 s
called by 按钮 'setup'1 @' q! ^: m' v- U
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
