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: 12247|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:, H$ v+ v+ @& C

- P$ ?) Y. T* g0 ~ public Object buildActions () {7 z% O4 k7 w8 G2 C5 \/ x
    super.buildActions();' p+ O& q1 o' ]+ P- g
    7 y! b! s  O# Z5 T
    // Create the list of simulation actions. We put these in& m6 H' j( }0 e; @0 y/ M0 w0 W
    // an action group, because we want these actions to be
( J( ^- f; y+ w$ A6 X    // executed in a specific order, but these steps should
/ y' M$ Z8 \! t3 P9 h/ J    // take no (simulated) time. The M(foo) means "The message: p! i3 w" |% [8 H  `
    // called <foo>". You can send a message To a particular
% L( \. v5 p& O3 _    // object, or ForEach object in a collection.3 ]+ V$ ^1 j7 M  W! B7 j0 q
        , N9 W( p0 f2 G/ r7 g9 w/ ?
    // Note we update the heatspace in two phases: first run
8 V; g. O! K! x7 i( y, C  h    // diffusion, then run "updateWorld" to actually enact the
7 q" ^2 f; v9 a9 q' X; |    // changes the heatbugs have made. The ordering here is
: n+ J, X9 S; c" c7 ?9 Q8 o    // significant!
6 H/ O' ^! `# L+ P4 g        5 b  j% o+ \) R/ `
    // Note also, that with the additional
* P' a! ^% v  f! ~    // `randomizeHeatbugUpdateOrder' Boolean flag we can" K7 [( M% s1 o* w8 I  {
    // randomize the order in which the bugs actually run6 ?9 V1 s' u7 r
    // their step rule.  This has the effect of removing any# y: `2 \. G3 ?2 Q; h
    // systematic bias in the iteration throught the heatbug; \" a6 I. H# G$ Q4 ^: S) ^
    // list from timestep to timestep! T& ^, p- b/ O6 G8 d
        
2 _7 O% b+ J! K, \9 Q/ y    // By default, all `createActionForEach' modelActions have
& }3 @2 B+ J% R4 _* v+ {    // a default order of `Sequential', which means that the0 Q  ]% a7 p1 E
    // order of iteration through the `heatbugList' will be; p$ n5 m! ]* K% y7 _
    // identical (assuming the list order is not changed
& ?/ R. y4 k7 d* p/ _' s/ D  i    // indirectly by some other process)." {$ G4 C# u6 Y8 K: x
    1 }( R# W' s" Z- n$ ~
    modelActions = new ActionGroupImpl (getZone ());
6 Q  @& \) V' ^+ a5 g
( g0 ^: F0 C8 j3 x& U+ S6 n    try {
: p* G" a  I) b' w+ ^3 ?      modelActions.createActionTo$message
& c6 N$ q+ j& h) e. w        (heat, new Selector (heat.getClass (), "stepRule", false));
; O- o0 t4 |; v1 h9 ?    } catch (Exception e) {
8 ?$ [/ t# Z. o6 d% I+ Z; H      System.err.println ("Exception stepRule: " + e.getMessage ());  W  M1 e+ U" O& K. l* C; d
    }
" V/ u" w9 Z  g, T6 c' M9 c5 }- C  Q
    try {
3 j1 g  e, M9 D; L# k5 _3 Q- _      Heatbug proto = (Heatbug) heatbugList.get (0);
- A  n1 V5 n' f5 A      Selector sel = ) r) ~9 e: m9 q. `
        new Selector (proto.getClass (), "heatbugStep", false);
, D" \7 M. A1 `0 j3 s- g  K      actionForEach =1 y& R' F% e7 t4 y% r
        modelActions.createFActionForEachHomogeneous$call$ S7 o' B; p2 @' b- [: z" t4 E- o0 }
        (heatbugList,6 a% I/ A' t5 q6 n! G* l& F' W
         new FCallImpl (this, proto, sel,/ S; O: c" L4 G- B0 U3 c
                        new FArgumentsImpl (this, sel)));4 v! a. V0 F: c4 s4 A' X( T* [$ g
    } catch (Exception e) {
: ?1 B/ N! S) C0 `- z8 F& d* D8 a. I      e.printStackTrace (System.err);: \3 K9 W6 N8 g4 Y" i& O
    }# z# Y1 y9 _9 q' K7 G
   
3 f6 b0 |# ?+ R5 m1 e3 s    syncUpdateOrder ();- O' Y! N; H$ l- M

8 e7 P! w" t& V% A& W) t    try {
+ f5 O2 {" d8 u9 Z! p      modelActions.createActionTo$message . u! r& F* D& z# C0 t+ P
        (heat, new Selector (heat.getClass (), "updateLattice", false));$ l1 j$ |# K/ b3 g' }1 h7 a
    } catch (Exception e) {& s% d. W9 a5 P' |' z
      System.err.println("Exception updateLattice: " + e.getMessage ());# J9 H) @# M6 d% _
    }
% J0 |$ Q% J- ?2 {: X6 a        / d5 |- q+ c, ?! L- T
    // Then we create a schedule that executes the
% `: X6 o5 Z) q: ^' a    // modelActions. modelActions is an ActionGroup, by itself it
4 R+ ^6 l8 u7 Y8 U    // has no notion of time. In order to have it executed in) l# c+ N$ I# w0 A. C/ O6 g
    // time, we create a Schedule that says to use the2 O/ D) x. H( X. e* S4 o. a
    // modelActions ActionGroup at particular times.  This! X% Q3 e/ J( Q8 v4 a, b" s) S
    // schedule has a repeat interval of 1, it will loop every
# ], x/ x. A$ R( I  e5 t, |    // time step.  The action is executed at time 0 relative to
5 v4 m6 A$ r3 l  S8 @    // the beginning of the loop.
* \- W  Y0 k: r, i
3 y' q4 R3 a8 o* i& |" S5 w    // This is a simple schedule, with only one action that is
3 l1 u% _9 N# W. V/ u& K    // just repeated every time. See jmousetrap for more& _0 ^' h0 c$ n1 B2 }2 k4 @( W
    // complicated schedules.
: m# J4 P* B# W4 S7 n- ~$ J  
# g8 E8 S6 j# q& C3 K% B    modelSchedule = new ScheduleImpl (getZone (), 1);
; I, i" W4 J5 I' ?) A    modelSchedule.at$createAction (0, modelActions);
& i; x# N. L% S$ |        * x' Z! ?- z+ w7 f5 s& ]6 ]0 |( Y
    return this;* C% W+ ~! n$ q2 ]
  }
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, 2026-8-17 00:02 , Processed in 0.013575 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