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: 9239|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:. P* V. g# E/ _8 r' x1 f
* w' M4 p% j' {' d; b, y
public Object buildActions () {
5 K/ k' ~( p# H9 j! V' ?    super.buildActions();
1 E% c. i7 U' ?* S   
5 w& r1 \8 O0 G# p    // Create the list of simulation actions. We put these in
) T: m4 `2 N1 d: H    // an action group, because we want these actions to be
5 H7 c. N% O8 v' ?$ `8 C  t$ z    // executed in a specific order, but these steps should
0 i( r4 Q) U4 U4 D( K9 C) n& R' a    // take no (simulated) time. The M(foo) means "The message# e- c6 U4 |: p7 ?. M
    // called <foo>". You can send a message To a particular  {1 x' h# w6 o" {5 ~" V: C
    // object, or ForEach object in a collection.
' W2 E' @' z' `) S        
8 b5 H$ o" Z+ Q1 X  Q9 O+ p    // Note we update the heatspace in two phases: first run! R, y0 [1 a2 d6 h
    // diffusion, then run "updateWorld" to actually enact the
/ H+ |; I; {: R. G; n8 b. }( H/ X    // changes the heatbugs have made. The ordering here is" g$ B: Y! }$ r3 w
    // significant!
. X' W$ H7 p  F* ?3 a. m6 E        ! ~  n8 w3 {: {: k' x: q! n
    // Note also, that with the additional- {8 x0 s* |2 S) J- T
    // `randomizeHeatbugUpdateOrder' Boolean flag we can2 B  M, j/ s5 v3 F3 ]
    // randomize the order in which the bugs actually run
2 y+ l& r) c+ p  k7 N    // their step rule.  This has the effect of removing any5 ~! N1 E5 f3 M
    // systematic bias in the iteration throught the heatbug  Y5 [5 l9 R2 l8 T8 X: |% ?1 Z3 s
    // list from timestep to timestep
/ T: V: m) z& V1 V  h: A1 l        
. D4 e8 m9 l, t# Y. w6 {5 H    // By default, all `createActionForEach' modelActions have( @0 w' J) a& x
    // a default order of `Sequential', which means that the8 q* E" K9 v! _3 e
    // order of iteration through the `heatbugList' will be9 ~5 w. O/ U6 O# o0 e  _, N, ]: {9 ?
    // identical (assuming the list order is not changed
, Y" s3 \  T) Y! \    // indirectly by some other process).$ `& x# u0 w& Q& X& E' u
   
8 p1 T) I3 S; j* D6 S    modelActions = new ActionGroupImpl (getZone ());: L/ R: l$ _0 L( |! _: s

* J% a( v; W2 o3 _7 x- T6 _7 N% ?    try {
1 N& X* s& V1 {      modelActions.createActionTo$message
! J' e; {2 \9 n2 d, u) |        (heat, new Selector (heat.getClass (), "stepRule", false));
9 |8 k: F3 i% ?" _7 G    } catch (Exception e) {
0 O3 e; O% A; ]: ~3 c6 n& m      System.err.println ("Exception stepRule: " + e.getMessage ());
2 E& [2 M! d* y; d    }
4 p* H$ ?* B/ ^, |6 t3 N* r; w& u: o( }2 K$ ^
    try {
3 y, H7 h9 s+ V) d- A& T      Heatbug proto = (Heatbug) heatbugList.get (0);
- R5 S% E( R# L" I1 ]      Selector sel =
( H' [( b2 x- L2 `        new Selector (proto.getClass (), "heatbugStep", false);
% Z3 r, I1 ^1 ~- B      actionForEach =
1 J6 v' T; p/ s9 x6 A        modelActions.createFActionForEachHomogeneous$call/ E& ?' O4 D' W: w; c; S  ]$ |. Y
        (heatbugList,' o! f. w: s6 a( O' |
         new FCallImpl (this, proto, sel,
6 R  y6 w9 S/ B5 X+ |& a0 \6 X                        new FArgumentsImpl (this, sel)));
5 K6 V3 |; B7 o8 S) n: T    } catch (Exception e) {
% C5 O7 L$ h& d$ _' L      e.printStackTrace (System.err);! y5 j0 w$ O" z$ K
    }
% I+ Q# ~' [) X: H0 P    & m) W, Y8 }5 x: t" r8 n2 T! R
    syncUpdateOrder ();* Q4 v% F, R, m8 p) ~- V
$ T% k& k9 Z# i% i! K
    try {
( X  p; C8 J" b      modelActions.createActionTo$message : b- k* L" q( X, u0 }
        (heat, new Selector (heat.getClass (), "updateLattice", false));
) B! z: k5 o- `8 e. t    } catch (Exception e) {
' ~$ R5 i- M! x. E5 W$ d      System.err.println("Exception updateLattice: " + e.getMessage ());
1 K0 |+ i; V; H! V) q    }( j$ b+ S1 y: z1 o4 P
        7 y1 W/ V& Y' M+ U5 Z
    // Then we create a schedule that executes the4 ]8 [8 N: m# K7 l3 R& m* |( D
    // modelActions. modelActions is an ActionGroup, by itself it7 a0 t" z7 D' }% p! Q- h* O/ J
    // has no notion of time. In order to have it executed in. N+ c. w7 k5 `
    // time, we create a Schedule that says to use the
1 _, f- U' m  z* c+ ~; I    // modelActions ActionGroup at particular times.  This
# a4 u" i% y5 h  h0 U2 f    // schedule has a repeat interval of 1, it will loop every
# C+ e6 d- g0 c' K$ D    // time step.  The action is executed at time 0 relative to
! t- _) m! `" [0 W, ?" F    // the beginning of the loop.
* R9 H. `2 C% p' f( C1 ~/ O7 W, M+ Q- z0 K! e# \( u+ R
    // This is a simple schedule, with only one action that is' t2 V3 J% K) _% v1 h3 |
    // just repeated every time. See jmousetrap for more
3 h! L% u% a7 x! P/ O    // complicated schedules.
; l1 {* q6 F$ f5 L5 |1 d8 u  
+ w7 O- j( c- L1 E    modelSchedule = new ScheduleImpl (getZone (), 1);
# e9 I& K% G; ^    modelSchedule.at$createAction (0, modelActions);. W1 l* {4 d9 |7 p; j
        2 G4 ~: V; y5 D: J5 I/ F( g" P4 v
    return this;7 R" p# E/ W; T
  }
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, 2026-2-19 08:53 , Processed in 0.015193 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