我编的程序如下turtles-own [energy]3 ]7 ?1 {6 L P5 M" S7 a
to setup' N# Z' a& k2 C3 c
clear-all# C' {/ T* T4 C6 N
setup-patches
* l/ X# H; h' \* P! d4 { create-turtles 100
9 U1 R6 ~/ \; @% t' h8 n" v' O. y do-plots
' I g) _' u, J | ask turtles [ setxy random-xcor random-ycor ]
, ]3 `1 t$ ?; n1 E' f% @end
0 {1 W$ D! s6 pto go
9 H! o5 K: l# c( X# D- _ move-turtles
4 o: X7 B3 K$ X# H* ? eat-grass
0 o- F- S U$ x) m: p( d reproduce
0 G8 i* x! v1 |6 t% h0 [ check-death0 h/ d5 c$ G0 L% r
regrow-grass2 A: a. T' Y7 g9 V, O- K" T
do-plots+ i" R, T4 y+ a* f+ B* x& C& h
end
$ W/ S+ o7 P0 L h1 Xto move-turtles8 W9 q* Z" c, ?" X* u: j2 i
ask turtles [1 f% g$ t' B9 o
right random 3606 O& P, ]7 L( `0 ~$ I
forward 1
$ F; U" ^+ A- S q6 t set energy energy - 1
9 v0 G- l4 b8 K# T, I ]
" }/ H, k' f7 Q, X2 V: f! Bend# o. ^5 Q7 X s" z
to setup-patches1 [- P) k* r) Z2 }
ask patches [ set pcolor green ]* j7 d+ o1 A3 v$ t! C
end
# w( k9 C0 M6 t; gto setup-turtles
1 G2 `9 H- t2 l create-turtles 100( Z2 B1 C2 M* C8 R% D7 z
ask turtles [ setxy random-xcor random-ycor ]
+ x d ^6 {. }! V* a8 \- x% i3 aend
, p5 W2 y% w1 b; n5 E* m4 ^to eat-grass1 I7 u6 g7 J: _# A7 E
ask turtles [
! M4 u% Y! T7 F3 ^# o0 R if pcolor = green [
2 m! b: O% k* C' t- e/ g set pcolor black
/ ?- [3 b0 o G7 g$ C set energy (energy + 10), h$ T( p" M. H' L' {
]' l) Y- i; k5 q: o* b
ifelse show-energy?
2 Y8 V% g w0 {: ` U. j8 r- ? [ set label energy ]
' g- ?* F: A, D. L: \ [ set label "" ]7 N& Z. g% p( ]( u' c" W0 M6 R
]
4 _, }; _+ G9 H3 Y5 tend
r: r7 ~: b; z# ?% f/ t9 ]* jto reproduce# P8 l' J& z5 B( V
ask turtles [
, b) E* g% M% G% y, C if energy > 50 [1 s! A1 }: I6 j7 h$ [+ Z( \
set energy energy - 50
' t7 v" Y; g5 P6 v0 Z hatch 1 [ set energy 50 ]
5 M* a* X- N' {, V9 U# ~ ] U6 ^ p# l, O3 q
]& H, r8 O$ }& G3 S
end' u$ ~/ q$ p- i& z
to check-death: [ v& q/ j, N, y$ E$ v w2 y) E
ask turtles [
; k+ ]( t$ x9 A9 A U; t if energy <= 0 [ die ]/ |; e2 L0 n7 C5 U' R
]; G; L$ R. K% N! K" u
end
& {6 r, I* V5 O& c6 @' kto regrow-grass
2 A; z% H) s& X0 N! ?5 r1 x3 } ask patches [3 S7 d4 x8 |( u1 i. s4 y
if random 100 < 3 [ set pcolor green ]9 h( R% v5 y4 l0 }
]
3 g9 m$ F/ [ g8 @end, F& q7 G" l* c7 p# Y3 g
to do-plots$ x' v8 p! r3 X. E6 L. z
set-current-plot "Totals"& c2 e A+ w9 E$ C: q% E
set-current-plot-pen "turtles"
2 D( f# q& J4 B* L plot count turtles+ M: s% g* u- U2 y& }- V
set-current-plot-pen "grass"( w' ?4 f* E: G1 ^
plot count patches with [pcolor = green]
( I5 n# N1 O1 G& Y# y4 mend" l3 O8 r# G7 T- P
可是运行时提示no such plot: "Totals"/ s! L$ X( d6 F- ? T; s0 L5 {
error while observer running SET-CURRENT-PLOT
& {) I, @: T& b5 {8 f' s called by procedure DO-PLOTS
+ m E j, W8 w- F0 J H8 c called by procedure SETUP7 K" j8 e1 }$ m: ~; n: X" v
called by 按钮 'setup'/ Q) A" Z1 k9 C# J7 }, s
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
