设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 8610|回复: 0

[求助] 问jheatbugs-2001-03-28中某些代码

[复制链接]
发表于 2008-5-25 02:15:22 | 显示全部楼层 |阅读模式
5仿真币
HeatbugModelSwarm中buildActions部分,3个try分别是做什么?查了下refbook-java-2.2,解释太简略,还是不懂,高手指点,谢谢!代码如下:
) s) V0 Q5 v. F2 O; X( Z  p- u  Q
public Object buildActions () {
) Q5 t) t' I  o5 {; N0 w    super.buildActions();- z; k3 J$ ], I+ T
   
0 P1 C% R# @$ a2 G' i    // Create the list of simulation actions. We put these in
% i4 b0 X) |' H# U% l( B. |& O. ~    // an action group, because we want these actions to be! I6 I7 b4 G6 b
    // executed in a specific order, but these steps should
! @/ T! w7 A7 j    // take no (simulated) time. The M(foo) means "The message
1 j- o; Q8 U1 R2 t, ~% l    // called <foo>". You can send a message To a particular# I$ i0 W* X9 ^5 e# s% E* r
    // object, or ForEach object in a collection.
" _+ E5 A4 g' T' w: s' |0 N        
2 p) }% W! s, R! a    // Note we update the heatspace in two phases: first run! F# \1 Q( k$ B; r) R
    // diffusion, then run "updateWorld" to actually enact the
( H5 c, B6 h! Q" j: u    // changes the heatbugs have made. The ordering here is( Z% a0 g% U' E# p/ x6 e& X1 `/ }4 W
    // significant!
  ^1 ?. u& |+ @" u" u/ e( I        9 P0 p* y, ^3 _. p1 ^% _
    // Note also, that with the additional8 V3 T* R7 E- D3 C
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
2 F1 n. Y6 ?- |. G3 n    // randomize the order in which the bugs actually run
& H* I2 I8 G" T) v    // their step rule.  This has the effect of removing any
* \# ~: r1 \( q+ a2 L5 B5 Y7 F6 s    // systematic bias in the iteration throught the heatbug1 M( i! E8 y( \2 q& a4 A
    // list from timestep to timestep
1 y' V& o, Y8 `3 ^& y9 r; ^( ?        
+ `! H& {+ q7 |    // By default, all `createActionForEach' modelActions have: A5 z4 f; d0 q1 G
    // a default order of `Sequential', which means that the1 t# S; S+ Y( g
    // order of iteration through the `heatbugList' will be
' X/ _/ \" N# h- Z5 T; e4 N5 s    // identical (assuming the list order is not changed
8 r9 c; `7 Z; E# Y0 Q7 P( l7 ?    // indirectly by some other process).1 o: p: R$ G/ V! \* k$ C! B
   
" A5 i& P/ N5 v5 ^3 R% O9 y    modelActions = new ActionGroupImpl (getZone ());
5 t* H3 k+ d! F( n( E1 I1 A1 _5 S* h1 X* L. [) v; ^
    try {2 a- V& R1 W1 Z4 T2 O7 }
      modelActions.createActionTo$message* z( {) g' @/ v8 u( n) X' q* J
        (heat, new Selector (heat.getClass (), "stepRule", false));
/ m# E+ y6 P) g9 M) E& t8 v4 i    } catch (Exception e) {
3 J5 v& t* b+ H' d1 e  y      System.err.println ("Exception stepRule: " + e.getMessage ());
- ?! L  B3 Q( C4 [# J+ ?1 K    }, S$ T5 y6 H  [: ^

6 G& Y+ y4 s3 }* K" }    try {, @8 N. t3 e% K. K* n! L4 t
      Heatbug proto = (Heatbug) heatbugList.get (0);
: \# e* B% H4 q8 G# O      Selector sel = % E: E3 i! {; m- F" [9 y
        new Selector (proto.getClass (), "heatbugStep", false);
' P# o; R, U  i/ @6 P      actionForEach =. |2 e& e, H, H, D
        modelActions.createFActionForEachHomogeneous$call
3 p2 {5 j4 ]# J        (heatbugList,
! |. o# j  J0 `5 ^) l+ T         new FCallImpl (this, proto, sel,% \) S. s, L- W6 \# c  b. D
                        new FArgumentsImpl (this, sel)));
4 m$ Q8 {! Z- c2 V3 M. V    } catch (Exception e) {
4 ?2 i: }! p+ S" G+ O      e.printStackTrace (System.err);7 y% B8 o1 R' {5 @0 n0 h
    }% ]  D1 u9 x5 v" {5 J9 K
    5 E% Q( l' P* [! q3 S
    syncUpdateOrder ();; u; Q9 l# W# f# a
& C; b9 m, t1 ]' Q9 e) [
    try {3 `  x% ?+ n4 H
      modelActions.createActionTo$message , j" ?/ ]0 `, J$ y( U, S; J5 l
        (heat, new Selector (heat.getClass (), "updateLattice", false));
: W  a9 H$ ?# }0 R8 K; h5 G+ l* l    } catch (Exception e) {
) b% [8 t. `; I7 F% o& R' m6 ]      System.err.println("Exception updateLattice: " + e.getMessage ());
: _0 c) }+ c/ R) L% [    }
: P0 `$ R6 w# w; I" a/ B& C        4 M/ O, R# I% Y% ?: P3 J
    // Then we create a schedule that executes the8 `- R7 j7 A% M+ J! ^. s9 n2 U
    // modelActions. modelActions is an ActionGroup, by itself it6 m- V/ @3 s% Z, G0 d/ w3 ]: A
    // has no notion of time. In order to have it executed in
" N6 r" a  w0 t. L    // time, we create a Schedule that says to use the# T2 v4 S" w7 e; y
    // modelActions ActionGroup at particular times.  This
9 Z& }  {! F% D8 Z  c  o! N0 c0 h. `    // schedule has a repeat interval of 1, it will loop every% G4 P* T6 e* Z  Z  t8 J! w, M. F
    // time step.  The action is executed at time 0 relative to
1 t( v3 Q0 N# s8 s4 L" j, f. f    // the beginning of the loop.
# D7 x$ j/ A2 e6 |' l' X) h
( J' C) R0 r$ b! j5 Q* c0 a    // This is a simple schedule, with only one action that is
+ Y$ C  z. k7 o8 G8 A8 y    // just repeated every time. See jmousetrap for more
0 J. A# o3 ~: n8 P    // complicated schedules.
& D# t' ~7 `' U8 W0 r" S0 J% x' \) F  
. y- n3 g5 l+ V( `# l    modelSchedule = new ScheduleImpl (getZone (), 1);
; d8 u: e2 @' G9 x5 g5 G3 k; P    modelSchedule.at$createAction (0, modelActions);- T: T9 W# i) \8 ?
        8 _8 o1 n. k# {4 s5 X. ~
    return this;2 X/ @$ i7 C+ @  t; [9 N; H2 {( j
  }
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-1-18 06:42 , Processed in 0.017390 second(s), 11 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表