How to go about optimising this class?

I'm rather new to actionscript, but I'm figuring it out as I go.
I am making a game. One of the primary features of this game is darkness. I chose to use tiles to represent areas outside the players sight range, this works great on a small scale. The problem is that once there's lots of darkness tiles it gets a bit laggy.
This is the class for light sources, currently its a proof of concept.. I plan on having in betweens later so its not just a true or false.
package
 import flash.display.MovieClip;
 import flash.events.Event;
 public class LightEmitter extends MovieClip
 private var i:int = 0;
 private var closestH = 0;
 private var lightResistance = 0;
 private var brightness = 1;
 private var targetTile;
 private var baseSightLevel = 400;
 public function LightEmitter()
 this.parent.setChildIndex(this, 0)
 stage.addEventListener(Event.ENTER_FRAME, onJoinFrame);
 public function onJoinFrame(e:Event)
 //Hide darkness
 for (i = 0; i < MainDocument.darkTiles.length; i ++)
 targetTile = MainDocument.darkTiles[i][0]
 lightResistance = MainDocument.darkTiles[i][1];
 if (Math.sqrt(Math.pow(targetTile.x-this.x, 2) + Math.pow(targetTile.y-this.y, 2)) < (baseSightLevel*brightness)/lightResistance)
 targetTile.alpha = 0;
 else
 targetTile.alpha = 0.6;
 this.x = parent.getChildByName("player").x
 this.y = parent.getChildByName("player").y
This is the class for a tile of darkness.
package
 import flash.display.MovieClip;
 public class Fog extends MovieClip
 var aDarkTile: Array = new Array();
 public function Fog()
 aDarkTile[0] = this;
 aDarkTile[1] = 1;
 MainDocument.darkTiles[MainDocument.darkTiles.length] = aDarkTile;
I need to load lots of tiles at a time in addition to any other elements of the game. (but I can unload, or at least hide, tiles that are off screen)
Any suggestions/tips/alternatives would be greatly appreciated.

enable the cacheAsBitmap property of your tiles and remove tiles that are no longer on stage.

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How best can i optimise this script

I have a script the loops through a table and function. it works fine but it takes a longer time complete even though resources are given. the code below is just the same code i used how best can i represent it for speed even though i have all resources.
For each_member in ( select from MemberTable where MemberID = 'ALL')*
Loop
Begin
if Age >= 18 then
hold:= 'Adult'
end if;
For Each_history in (select Acct,fx_function(each_member.ID,each_member.Acct) BR,
Movement from History a where history_ID =each_member.Id)
loop
Begin
insert into NewFilteredData (act,BR,mvt)
values (Each_history.Acct,Each_history.BR,Each_history.Movement);
end loop;
end loop;
end loop;
commit;
How best can i optimize this script to move data faster because they are a lot about 6000000 records to be moved.
please help.
Edited by: kama021 on Aug 25, 2009 12:48 PM
Edited by: kama021 on Aug 25, 2009 12:48 PM

Unless something is horribly wrong (i.e. the optimizer picks a radically incorrect plan), if you can do something in SQL, it will always be faster to do it in SQL. Doing things in PL/SQL, particularly using cursor FOR loops and single row inserts, is the slowest possible way to do anything (well, other than having nested FOR loops).
Long before you start looking at things like the APPEND hint, I would focus on implementing a single SQL statement that generates the correct results. Once you have that and you have a benchmark, you can decide whether it is "fast enough". If it is (and I suspect it will be), you don't have to delve any deeper. If you need more performance, you can start looking into parallelism, the APPEND hint, etc. but be aware that this generally increases the complexity of the system.
Justin

Not sure how to go about grouping this...

Hello all and thanks in advance for any help you can offer. I'm sorry if this is a bit long winded, but I'm at my wits end.
I'm using CRXI with SQLserver2000. I'm comfortable with SQL but new to CR which may be causing my problem.
I've been asked to create a report of accounts closed, by salesperson for the prior 60 days. In addition, I need a count of new accounts brought in by those same salespeople during the same 60 day period. Individually, these two are not the issue.
The third part is to create a count of new account statii by each sales person for the same new sales so the report would look a bit like this:
Name     Accounts Closed Since 6/21/08     New Accounts Since 6/21/08
SJohnson          10                    30
Status:
Open: 16
Closed: 4
Pending:9
Declined:1
JSmith          2                    16
Status:
etc.
etc.
It's the statii that are causing the trouble because they are all contained in the same field in our data. We'll call it: customer.dbo.info.CurrentStatus.
There are 7 possible statii: Open, Closed, Declined, Deactivated, Discarded, Pending and ReOpened.
I can get the sales data out of our sales dbase easily enough, and the statii from our customer data through SQL:
select S.sRep as Rep, C.CurrentStatus as Status, count (*) as Count
from sales.dbo.info A
inner join customer.dbo.info C on S.pkSalesCallID=C.fkSalesCallID
where
S.SalesCallDisposition='Sold'
and
S.dtSold>'6/21/08'
group by S.sRep, C.CurrentStatus
order by S.sRep
For the closed we have customer.dbo.table.customer.dtClosed This table also includes.sRep so finding the rep, the date closed and the count of the closed is no problem.
select C.sRep as Rep, count(*) as Count
from customer.dbo.info C
where c.sStatus='Closed'
and c.dtClosed>'6/21/2008'
What I can't figure out is how in the world to make Crystal Display the data correctly. No matter what configurations, groupings, summaries or counts I try, I keep getting a huge mess when I try to add the various statii in the various sections of the report.
I get Command as a view (I think) that has 3 columns. Rep, Status and Count.
Then Command_1 that has Rep and Count. I don't really need that status here because it's only "Closed"
I would think I'd be able to have my group1 be Rep and drag the Rep column out of the field viewer and that would give me my Rep Name. Then drag out Command_1 Count right beside it to get my Closed count. So far so good. This actually works just fine.
But if I create a group 2 and summarize by count and try to drag out Status into the Group2 Header, I only get the first of the list, usually closed. If I drag it into the detail, I get something like:
Closed      4
Others     2
Others     2
And I have ABSOLUTELY no idea why. There is no "others" status in our system.
Anybody have a clue?
Thanks again for the help!

Hi Mike,
From the sounds of it, in Crystal Reports:
1. You should create a group on "Sales Person" (Insert|Group)
2. For the totals on statii, you can place those fields in the Details section and insert a summary (right-click on the field and Insert Summary) or create a Running Total (in the Field Explorer).
3. For the date range you can either insert a date parameter (in the Field Explorer) and add it to the record selection formula (Report|Selection Formulas|Record...) or you can hard code the date in the record selection formula.
The above is a quick overview of how I interpret the requirements for your report.
Regards,
Wallie

How i create object of this class

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.print.PrinterException;
import java.text.MessageFormat;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
public class vendor extends JDialog // probably best to use a JDialog, not a JFrame here
// make some instance variables
private String rows[][] =
{"A", "a"},
{"B", "b"},
{"E", "e"}
private String headers[] =
"Upper", "Lower"
private JTable table = new JTable(rows, headers);
// here's the constructor.
public MainClass(JFrame frame, String title, boolean modal)
super(frame, title, modal);
//frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JScrollPane scrollPane = new JScrollPane(table);
add(scrollPane, BorderLayout.CENTER);
JButton button = new JButton("Print");
ActionListener printAction = new ActionListener()
public void actionPerformed(ActionEvent e)
printActionPerformed(e);
button.addActionListener(printAction);
add(button, BorderLayout.SOUTH);
setPreferredSize(new Dimension(300, 150));
//frame.setSize(300, 150);
//frame.setVisible(true);
private void printActionPerformed(ActionEvent e)
try
MessageFormat headerFormat = new MessageFormat("Page {0}");
MessageFormat footerFormat = new MessageFormat("- {0} -");
table.print(JTable.PrintMode.FIT_WIDTH, headerFormat,
footerFormat);
catch (PrinterException pe)
System.err.println("Error printing: " + pe.getMessage());
     public static void main(String x[])
{new vendor();}
}

You have to call it from a JFrame or other root container:
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class UseDialog extends JPanel
    private JFrame frame = null;
    private MainClass myDialog = null;
    public UseDialog(JFrame frame)
        setPreferredSize(new Dimension(300, 200));
        this.frame = frame;
        JButton showDialogBtn = new JButton("Show Dialog");
        add(showDialogBtn);
        showDialogBtn.addActionListener(new ActionListener()
            public void actionPerformed(ActionEvent e)
                showDialogBtnAction(e);
    private void showDialogBtnAction(ActionEvent e)
        //*********** here is where it is called **************
        myDialog = new MainClass(frame, "My Dialog", true);
        myDialog.pack();
        myDialog.setVisible(true);
    private static void createAndShowGUI()
        JFrame frame = new JFrame("UseDialog Application");
        frame.getContentPane().add(new UseDialog(frame));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    public static void main(String[] args)
        SwingUtilities.invokeLater(new Runnable()
            public void run()
                createAndShowGUI();
}Also, when posting your code, please use code tags so that your code will be well-formatted and readable. To do this, place the tag [code] at the top of your block of code and the tag [/code] at the bottom, like so:
[code]
// your code block goes here.
[/code]good luck

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Follow these steps to place your iOS device into recovery mode. If your iOS device is already in recovery mode, you can proceed immediately to step 6.
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If you don't see the "Connect to iTunes" screen, try these steps again. If you see the "Connect to iTunes" screen but the device does not appear in iTunes, see this article and its related links.
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If you have a problem getting into recovery mode then try: RecBoot: Easy Way to Put iPhone into Recovery Mode.
Note: When using recovery mode, you can only restore the device. All user content on the device will be erased, but if you had previously synced with iTunes on this computer, you can restore from a previous backup. See this article for more information.

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How to create a constructor for this class?

Hi everybody!
I have an applet which loads images from a database.
i want to draw the images in a textarea, so i wrote an inner class, which extends textarea and overrides the paint method.
but everytime i try to disply the applet in the browser this happens:
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How to clear a private static class attribute once it's been created?

<pre>I'm working with an instance of a complex Class object that has been created using the function module HRXSS_CAT_APPLICATION_INIT. The Class object that I am trying to work with is CL_XSS_CAT_BUSINESS_LAYER and in particular its Static Private component attribute PROFILE. 
The issue that I am having is that the first call of this function module creates and populates the Static Private component attribute, PROFILE, for the instance of this Class and I do not know how to initialize it once it's been created. The PROFILE attribute is an object reference to an instance of Class CL_XSS_CAT_PROFILE. 
I want to reset/intialize this Static Private component. I can then call a Class Method with different parameters so that it repopulates PROFILE with different attributes. There is no Public method to do this in CL_XSS_CAT_BUSINESS_LAYER and even the Private method INIT_PROFILE, the logic first checks to see if the PROFILE component is initial before creating a new PROFILE object instance. All the Attributes of the CL_XSS_CAT_PROFILE object are Static and Private.
 
I would appreciate any insight anyone might have in how to reset/initialize this Class component attribute. 
Thanks much, 
 
Graham 
Sample code snippet is as follows:
 
DATA: lr_cats_application_rfc TYPE REF TO IF_XSS_CAT_APPLICATION_RFC,
lr_core TYPE REF TO IF_XSS_PT_APPLICATION_CORE,
lr_core TYPE REF TO CL_XSS_CAT_1_APPLICATION_CORE,
lr_instance TYPE REF TO CL_XSS_CAT_APPLICATION,
lr_business_layer TYPE REF TO CL_XSS_CAT_BUSINESS_LAYER,
lr_profile TYPE REF TO CL_XSS_CAT_PROFILE,
lr_profile_temp TYPE REF TO cl_xss_cat_profile.
DATA: l_employee TYPE pernr_d.
DATA: l_employee_tab TYPE rhxss_cat_employee_t.
CASE im_command.
WHEN 'DATESELECTION_PRVPERIOD'.
*-> navigate to object component reference for CL_XSS_CAT_PROFILE instance
lr_cats_application_rfc = im_ref_to_parameter_cache->REF_TO_APPLICATION.
*-> navigate to object component reference for CL_XSS_CAT_1_APPLICATION_CORE
lr_core ?= lr_cats_application_rfc->get_core( ).
*-> navigate to object component reference for CL_XSS_CAT_BUSINESS_LAYER
lr_business_layer = lr_core->business_layer.
*-> navigate to object component reference for CL_XSS_CAT_PROFILE
lr_profile = lr_business_layer->get_profile( ).
l_employee = im_ref_to_parameter_cache->pernr.
append l_employee to l_employee_tab.
 
*THIS IS WHERE I AM HAVING ISSUES...I WOULD LIKE TO CLEAR/INITIALIZE THE STATIC PRIVATE COMPONENT LR_BUSINESS_LAYER->PROFILE BEFORE CALLING THE METHOD INITIALIZE_FOR_TIME_RECORDING 
 
 *THE FOLLOWING LINE FAILS ON A SYNTAX CHECK WITH 'FIELD "PROFILE" IS UNKNOWN. IT IS NEITHER IN ONE OF THE *SPECIFIED TABLES NOR DEFINED BY A "DATA" STATEMENT
 
clear: lr_business_layer->profile.
CALL METHOD lr_business_layer->initialize_for_time_recording
EXPORTING
im_employee_tab = l_employee_tab
im_profile_id = 'MODAPPR1'
im_startdate = sy-datum
EXCEPTIONS
pernr_not_enqueued = 1
no_pernr_for_user_found = 2
profile_not_found = 3.</pre>
Edited by: Matt on Aug 1, 2009 12:44 PM

OK...I apologize but I did not dig deep enough to see that the Enhancement Framework allows for the addition of Methods to Classes/Interfaces. Most of this ABAP OO stuff is still quite new to me so I'm struggling with syntax and what is and isn't possible based on how everything is declared. I guess now that I know I can do this I am having some problems understanding how singleton Class objects work and how to 'reset' them.
The Class instance based on CL_XSS_CAT_BUSINESS_LAYER has a Static Private attribute PROFILE that is an object reference to the singleton Class instance CL_XSS_CAT_PROFILE.
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I used the enhancement framework to create a copy of the CL_XSS_CAT_BUSINESS_PROFILE Instance Private Method INIT_PROFILE , called in INIT_PROFILE2, but I am not sure how to 'clear/reset' the instance of the CL_XSS_CAT_PROFILE object.
Since PROFILE is an attribute of the CL_XSS_BUSINESS_LAYER object, I thought that a simple CLEAR PROFILE would reset the object but this is not the case. Within this method the FREE clears the value of the reference variable PROFILE but as soon as you step into the method me->init_profile, the value of PROFILE goes back to what it was. I need for all of the CL_XSS_CAT_PROFILE instance attributes to be reset or initialized so I can fill them again. I think I'm getting confused on the scope of things...should I be enhancing the CL_XSS_CAT_PROFILE Class with 'setter' methods so I can initialize all of the Static Private attributes that way instead of trying to clear all the attributes at a higher call level?
Any assistance with helping me with my thought process or approach to this would be much appreciated.
METHOD INIT_PROFILE2.
FREE PROFILE. >>> is reset but it does not carry through to next method call and does not clear all the attributes of the object referenced in PROFILE
CALL METHOD me->init_profile
EXPORTING
IM_PROFILE_ID = im_profile_id
etc...

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How to go about optimising this class?

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