我编的程序如下turtles-own [energy]
+ T; C0 T" z4 p9 v5 p- n6 v( uto setup
7 U! ~. V6 o+ b clear-all, Q: R$ P- M4 B$ b+ I/ E- G# ]9 R& S
setup-patches
$ E4 ?2 `: R# k6 q& ^' D create-turtles 100
" J+ ^5 P0 i* J8 r- E do-plots: w, v" X2 e! b9 k1 _2 X
ask turtles [ setxy random-xcor random-ycor ]
( ^' [# R8 P# h- B) H! |* aend
. ^! \3 S3 E6 t) o: V. fto go, E0 ?3 }8 a& s B
move-turtles' [/ t, g# W) V/ M; I
eat-grass
" Q1 h7 f% t" N; N: w6 ` reproduce
# i5 x; n# V6 ^7 v; H% f _) k: l9 n7 f check-death: W- n/ Z3 e4 q, d
regrow-grass' l I3 m- y; A9 n* s4 X
do-plots# k/ E1 r7 Q5 }/ B# b4 t$ Q; S0 Q
end3 N6 F& p. O6 Q! a2 ? n) H
to move-turtles
2 I4 q' T% f! o' R$ z4 E# o ask turtles [0 S7 G7 |: D5 a- ~* L4 z
right random 3607 I3 X+ s* `$ C+ l8 O& C! q
forward 1- n: F& m9 e1 e D \
set energy energy - 1 L; b6 x5 |: x. I$ I! b8 R
]+ A0 K5 `5 _) x+ Y( _7 B9 A
end0 W# }$ m4 P# Q- b0 }/ k2 |
to setup-patches8 m! ~4 p( Y! p4 w. k8 e
ask patches [ set pcolor green ]: _: M: U$ b. z* k8 s: Y
end! j) n( K" p8 _# @$ E, r; h
to setup-turtles
/ s" ]0 u4 J& U7 a) J& h2 f; [ create-turtles 100$ V2 T7 d0 u* I0 o' {4 \
ask turtles [ setxy random-xcor random-ycor ]
5 w. g+ k1 T3 u, H! F" u- fend- O+ i( R4 n R4 D& c. g/ m5 _
to eat-grass6 V0 B6 s: }# E
ask turtles [- N" O: x! [6 Y3 s# p; G. h' z7 c
if pcolor = green [' `" h% }3 n/ A" L1 D% V
set pcolor black( {9 ]0 H7 X# h/ t4 i/ }2 r
set energy (energy + 10)
+ ]3 Q! u9 G' R" u) K ], ]) `* ~7 n! M5 @- P, j+ K, C; n
ifelse show-energy?
' ]0 i& ]. G& S% V/ V5 j) A [ set label energy ]( _0 P) ^) @- F l4 |5 g. C
[ set label "" ]
% q' g$ ?7 s0 a7 w V ]; g0 T, c' c D+ q0 n Q" G- X
end
O0 ^8 L5 h# U2 Pto reproduce
" C( O3 @3 {2 ^( @. k. p. Z ask turtles [6 t# ~$ y2 p4 s6 V! b* J
if energy > 50 [+ y( _7 [( K' h2 }
set energy energy - 50) w& ?5 b7 k# i5 E2 k
hatch 1 [ set energy 50 ]! u7 r3 \. D" a) @9 o$ M* }
] L4 ?4 V3 ]' \
]/ S9 g# x' Y" O6 L, I1 U
end
& @/ S7 L9 X. k/ w/ E% P2 rto check-death
! U9 J; u5 v8 a- z" e% i" \ ask turtles [
/ g9 Q3 y1 W- f$ I& c" L* a if energy <= 0 [ die ]
$ c$ S( \9 W. T. O2 \: \* j ]
{2 H, F( G! Z, w" vend
6 Z" s3 O% k) G: p' S8 B( Xto regrow-grass
6 v; }3 E/ [- \, M4 ` @. S ask patches [+ m/ f: J5 M8 [4 a) N0 R/ V
if random 100 < 3 [ set pcolor green ]& {) @+ x. A* O5 U, e
]
$ h1 T+ z$ o y$ V+ p# d& e$ Zend; l$ _+ P( O% V: @. p' Q$ I7 F) M v
to do-plots
* U' L8 C2 c. X8 Q# n* z set-current-plot "Totals"
9 O) ^1 E4 N* n8 z. u4 T set-current-plot-pen "turtles"
$ T. ~' { z0 ^ {* k' u) e plot count turtles
1 d4 Y: Q) P+ ]+ o2 Y' N0 d set-current-plot-pen "grass"" Q% K' d) R9 b
plot count patches with [pcolor = green]
3 z0 A" v5 n- X! d$ Aend7 \: ?( s0 h, w. S4 P4 G
可是运行时提示no such plot: "Totals"8 i) J) g) L( S" o& F
error while observer running SET-CURRENT-PLOT; x/ R: H' m1 r9 I" g) [
called by procedure DO-PLOTS
) f0 C+ l r0 K0 M called by procedure SETUP8 p5 R6 T9 p- Z2 k8 R. |
called by 按钮 'setup'4 g5 P( ]2 D! n$ Y
求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
