我编的程序如下turtles-own [energy]
: D& Z4 T9 o2 uto setup
2 B" X' ~/ P. W; A; M( ~; C, E clear-all& M5 i6 \0 B2 O! }. D
setup-patches7 }# ]3 T4 A2 P
create-turtles 1006 N0 ^$ I. k- a3 l8 ` h4 Y
do-plots
$ L1 x/ A& r' B6 q- o; j H# g ask turtles [ setxy random-xcor random-ycor ]
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to go8 _3 E( Y- L7 u! Y, L/ J) c! O) [
move-turtles" O/ h' L2 d! |' e4 Z8 C
eat-grass. a4 ^1 F: z/ L
reproduce
7 D# W, q7 N% M( j! w check-death
8 a+ _5 x! U3 d regrow-grass! L! G: M/ D) ^; q
do-plots# h( |* b: t* S: Y+ w# ~
end
7 N9 N) J& ~. m0 U; fto move-turtles6 h9 K) o: s& ~- Y
ask turtles [
; |1 ~5 P! l* ~ ~2 O; J right random 360
, l. _; V# ]1 V6 i forward 19 x2 s& }( S( a* M
set energy energy - 16 s, m) `7 i- ?1 A) ~& u8 Y
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end
1 L& A2 l2 \) u2 ~: E5 C/ o; l( Lto setup-patches
; g3 y8 O& g1 M( P6 ]5 P+ j) x3 h$ x ask patches [ set pcolor green ]8 ~0 z; h( a0 ?$ F7 g* ^
end
" \7 w3 E/ H4 f+ nto setup-turtles
: y2 I* e8 H1 u create-turtles 100& |5 {, P2 {; ?7 L9 F
ask turtles [ setxy random-xcor random-ycor ]- k2 s- d% h) e7 I/ v, o
end
% Q7 p. t+ C8 Sto eat-grass
5 M* B, D- n# j/ _5 z ask turtles [
$ r& d$ q9 o" ]2 Q: {/ Y if pcolor = green [
0 _) Q% @' f8 X2 @! b set pcolor black) I, p' i+ ^6 r
set energy (energy + 10) n/ U% |4 I( S' w/ M( E
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ifelse show-energy?/ j3 F3 J \) p: ]. j! g
[ set label energy ]4 _6 @, l5 R2 c- t9 l9 w/ F
[ set label "" ]
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8 j) }/ F$ m9 E$ l" r, q5 Mend
3 Z$ ]+ [( w; V+ [, v( U% Eto reproduce' P7 }+ o3 I/ U1 D$ f7 a
ask turtles [' j% J( Q" q9 K& F
if energy > 50 [
, ?! Z# Y& T* @. l; q set energy energy - 50
" q5 Q' ~' i6 f hatch 1 [ set energy 50 ]
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end
0 O1 X# \( _' G7 zto check-death5 N) M1 @6 y; t& G8 E0 u
ask turtles [/ `# `# H' y$ F
if energy <= 0 [ die ]9 L& W0 m6 U4 W
]8 F0 _" a. l0 W( [
end$ _' q& U2 Z5 A4 Q8 L ?! @
to regrow-grass
* \) @0 q9 D5 w6 g* R0 b! Y) Y- n- ^ ask patches [/ L6 H$ z: O i) s) j& V
if random 100 < 3 [ set pcolor green ]
4 Q7 h: }, q n ]3 N4 @- i' ~8 f8 U
end0 P! B8 e/ `+ e# i+ W/ ~4 n
to do-plots1 a1 j- j3 f. M2 }: j( C. ?$ I
set-current-plot "Totals"* |& Q0 u) Z' W: _
set-current-plot-pen "turtles"
# _' q d# @( t2 h plot count turtles, ]5 ?" _" m) c2 Y
set-current-plot-pen "grass"8 P) h, ^: m$ G
plot count patches with [pcolor = green]
, }* J. x0 ^9 o9 K; X& R: y& J4 G) _end
' f$ Y' ]( i, V4 |# r/ ?: e( O可是运行时提示no such plot: "Totals"' [$ {7 z9 ?/ Z. z8 i% j% A8 I. h) _. Y' b
error while observer running SET-CURRENT-PLOT9 p6 ?# d1 G- @* C& ?. Q! A& T
called by procedure DO-PLOTS
2 [ ]# X- e; o" [9 ?8 { called by procedure SETUP W/ j* r8 W0 E/ d( Y- k9 \
called by 按钮 'setup'
2 Z- q- T$ I0 S- B求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
