我编的程序如下turtles-own [energy]
# ~' O8 k& O. G7 Z Oto setup
- p- H1 W" w- H) Z9 W; g6 X clear-all$ q( z: n8 I8 Q; Y4 T t0 D, b) |
setup-patches* d' d6 G* ?; D: G
create-turtles 100% | k8 S2 \8 k4 f2 Q. c9 U
do-plots
1 \! t, a7 ^# S1 { ask turtles [ setxy random-xcor random-ycor ]
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to go
- H& v1 s `) C6 H move-turtles% l. T5 V: K, R; x1 b* A. {
eat-grass# B6 N4 p/ d0 O5 n
reproduce
' H/ s& D/ d( O- U6 T* D' ~# S check-death% L7 Y) {1 Y- h6 r' C
regrow-grass
$ l# v7 V4 G. g! [ do-plots
3 o P9 f A2 P' X8 B: oend9 r+ Z( Z- Q' |
to move-turtles
, X9 q L6 b0 [: r( K- y ask turtles [
' X7 E; O( y* e, W% D right random 360
6 c3 m# U) _" ] I forward 12 h6 ?; `2 d( \& ` m
set energy energy - 1& \6 X4 `! J7 O# V+ v7 v9 d
]
' g0 A( Z# I: aend1 I) E2 k+ e- c
to setup-patches( A! k/ H+ z: g4 \, [5 y$ @, j
ask patches [ set pcolor green ]$ B, }, f0 v# \% N9 c' X# A
end: h8 O! Q5 y) H
to setup-turtles! H) s9 {6 s& Z" P" G2 k
create-turtles 1006 d* I9 y* h' q% @6 U
ask turtles [ setxy random-xcor random-ycor ]
) z/ ?+ J6 X$ R# j; u- v/ Jend
1 i1 @( U' ]. }8 q, `! bto eat-grass: I* J( _" S; T/ a/ I
ask turtles [$ L; G) A& ]5 `- D, P
if pcolor = green [
( I+ D3 v% }) m6 x set pcolor black
# C% {: a& c5 D5 @; z0 _! I set energy (energy + 10)6 L/ m' |* B, W7 h# w
]
2 Z! y9 n; ^5 y* x' W* n( x ifelse show-energy?: B, X, ]) }; H y e1 _
[ set label energy ]
( D7 [9 d$ d: Z+ e: N- K [ set label "" ]
) a) F" g/ G7 f% j) j ]
( f$ {5 m+ A8 s: ]/ Oend$ s7 l2 E3 T8 D- q( O/ z) q
to reproduce
7 X( H( C* S7 z1 n9 [ ask turtles [
0 j. J' z6 w3 }% } if energy > 50 [
% u) y, a( [/ g* C/ f! y set energy energy - 500 Y) m- c1 v, e2 R
hatch 1 [ set energy 50 ]2 `- F! N0 ?) t
]8 ]" p& T1 |+ a+ G3 K$ |" t% y; y
]
+ P, K8 i+ B; S/ o5 @end( f- v, Z7 p- f- J+ R ~
to check-death+ J* t o6 |6 E* K+ R0 x
ask turtles [+ T; O! s7 k1 p2 l6 W: ~$ B
if energy <= 0 [ die ]
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end
' M/ ]) y2 y' U8 c: a- q% Jto regrow-grass
' \; Q4 u! R* ^- ]- W( B* K! I ask patches [! I8 M$ V. L" I' F% M& R
if random 100 < 3 [ set pcolor green ]7 T# G8 S/ i/ ^7 Y
]
+ h* u& l2 E6 L" N% O% A- |end8 Q/ s( V7 j# A9 d
to do-plots
$ D2 H( [( d0 ?$ t/ D+ w/ A% B set-current-plot "Totals"
- O3 T# c4 _/ y! y4 y) V9 t2 o set-current-plot-pen "turtles"- A' p2 v4 h+ J u
plot count turtles) ^/ r+ |. p0 |% N
set-current-plot-pen "grass", a1 c; W1 z/ j) y7 Q
plot count patches with [pcolor = green]
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可是运行时提示no such plot: "Totals"4 ]7 @. l! x( }
error while observer running SET-CURRENT-PLOT; H5 t8 z7 s2 W3 D; \
called by procedure DO-PLOTS
@0 E8 h5 ?3 `" `5 S+ X L7 N called by procedure SETUP
1 L S5 D5 [2 k: ~6 q+ k called by 按钮 'setup'" H- u% t5 T$ c" I# e/ U* l/ i
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
