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• Data structures for a 3D array

  - by Smallbro

  Currently I've been using a 3D array for my tiles in a 2D world but the 3D side comes in when moving down into caves and whatnot. Now this is not memory efficient and I switched over to a 2D array and can now have much larger maps. The only issue I'm having now is that it seems that my tiles cannot occupy the same space as a tile on the same z level. My current structure means that each block has its own z variable. This is what it used to look like: map.blockData[x][y][z] = new Block(); however now it works like this map.blockData[x][y] = new Block(z); I'm not sure why but if I decide to use the same space on say the floor below it wont allow me to. Does anyone have any ideas on how I can add a z-axis to my 2D array? I'm using java but I reckon the concept carries across different languages.

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• Partitions: "Partition Virtually"

  Save space by deactivating index partitions, and use virtual columns to partition more logically.

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• Grandstream's Latest GXP SIP Business Phone

  The Singapore-based vendor should continue to rule the under-$99 space with this sophisticated offering.

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• DHCP and Reservations in windows server 2k3!!

  - by Fri13th

  Hello everybody! I have a problem with Configuring DHCP Reservations: in the client, ipconfig: Address Leases is: 192.168.188.20 http:/i160.photobucket.com/albums/t171/dungttvn/123.png then in the client computer: ipconfig /release but when i config the Reservations with the fix IP address is: 192.168.188.100 in the sever computer (throught vmnet1) and in the client computer: ipconfig /renew ... it's not work: the address lease is still 192.168.188.20 always! http:/i160.photobucket.com/albums/t171/dungttvn/456.png Someone help me! =.= Many Thanks!

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• Register now! Oracle SDN: Software-Defined Networking in a Hybrid, Open Data Center

  - by uwes

  Take the opportunity and learn more about Oracle SDN and  OVCA in this upcoming webcast. Title: Oracle SDN: Software-Defined Networking in a Hybrid, Open Data Center Date: 19th of November 10:00 a.m. PT Speakers: S.K. Vinod and Charlie Boyle Topics that will be covered: - the benefits of Oracle SDN - how Oracle SDN interoperates with existing overlay constructs - how Oracle SDN is different from other SDNs in the market We will also discover how Oracle Virtual Networking is integrated into the latest Engineered System, Oracle Virtual Compute Appliance Click her to register The webinar will be recorded. Register to get informed when the replay is a vailable.

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• OpenWonderland goes to Europe

  - by user12652314

  Past my day job, I also have the privilege of being Vice President and Member of the Board of the OpenWonderland Foundation (Formerly Project Wonderland for ex-Sun folks). It's great to see the progress Wonderland is making as the platform-of-choice for open source collaborative 3-D virtual worlds built in Java. The upcoming and first european IE Summit in Madrid will show a number of projects and innovations for virtual and game-based learning. I also dropped Ultan a note after learning about the Gamification of Oracle Apps to see if collaborating with kids and schools is an area we can work together on to improve kids engagement and learning experiences online. Stay tuned.

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• What is the point in using real time?

  - by bobobobo

  I understand that using real time frame elapses (which should vary between 16-17ms on average) are provided by a lot of frameworks. GetTimeElapsedSinceLastFrame, and it gives you the wall clock time. But should we use this information in basic physics simulation? It looks to me to be a bad idea. Say there is a slight lag on the machine, for whatever reason (say a virus scanner starts up). The calculations all jump, and there is no need for this. Why not use a virtual second and ignore wall clock time? For gameplay on the level of Commander Keen, shouldn't you always use the virtual second and not real-time? (Besides stopwatch timing for race games) I don't see a need to use real time and not a fixed 16ms time step.

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• Cloud consolidation handling multi databases

  - by llaszews

  I have spoken about virtualization and the different types of virtualization. Which includes OS zones, application server domains, database schemas, VLANS and other approaches. Another approach is to create a virtually federated database in the cloud. DBSpaces is a company that has a technology to created a virtually federated database in the cloud. DBSpaces is a Virtual Database technology that allows an organisation thru a single Virtual Database access multiple data sources (or database spaces) in real-time. Additionally dbSpaces can be configured to access an organisations data internally using a remote gateway so that their dbSpace is seamless across the Public and Private cloud.

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• Eclipse: AVD not appearing

  - by dgood1

  I have installed the ADT bundle for 32 bit. Using Ubuntu 12.04 Updated it a bit and installed the 2.3.3 Android version. I have Eclipse Indigo. When I use the Android Virtual Machine manager, after choosing a device, I get the progress bar after pressing "Start" but it disappears when it finishes and no virtual machine appears. No errors, too. I fear it would be a problem with my RAM (Laptop's = 512(or less). Allocated to Device = 128 - 300), having been told by a teacher that the emulator requires 2 GB RAM. I would like confirmation and/or solution.

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• Custom host file for Firefox

  - by acidzombie24

  Instead of changing my host file I'd like Firefox to think my domain is on my own server while my other browser uses the real IP address. I used to edit my host files but that forces both browsers to change the IP address. I found change host, but it doesn't appear to use the alternative host file. I also saw a comment asking when it will work on Firefox 6+. I tried Host Admin and it fails. It works but the alternative IP address must be in your host file already (which I don't want) and it lets you deselect a domain so the host file is ignored which is not what I want.

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• The device is not ready

  - by hmloo

  When you retrieve the drive info using the DriveInfo class, if you don't use the IsReady property to test whether a drive is ready, it will throw error as "The device is not ready". so you must use IsReady property to determines if the drive is ready to be queried, written to, or read from. The following code example demonstrates querying information for all drives on current system. using System; using System.IO; class Test { public static void Main() { DriveInfo[] allDrives = DriveInfo.GetDrives(); foreach (DriveInfo d in allDrives) { Console.WriteLine("Drive {0}", d.Name); Console.WriteLine(" File type: {0}", d.DriveType); if (d.IsReady == true) { Console.WriteLine(" Volume label: {0}", d.VolumeLabel); Console.WriteLine(" File system: {0}", d.DriveFormat); Console.WriteLine( " Available space to current user:{0, 15} bytes", d.AvailableFreeSpace); Console.WriteLine( " Total available space: {0, 15} bytes", d.TotalFreeSpace); Console.WriteLine( " Total size of drive: {0, 15} bytes ", d.TotalSize); } } } }

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• Is it possible to lose some directories when upgrading from 11.10 to 12.04?

  - by maythux

  Last day I upgraded my Ubuntu 11.10 desktop to Ubuntu 12.04. I was running a KVM virtual about 7 machines and managed by virt-manage software. Anyway when I finished upgrading I found that virt-manager is not working. So I had to reconfigure it again and install some other missing packages that was deleted! Eventually, I managed to solve this issue. Then I started to restore my virtual machines. I restored 2 machines without any problems. The third and fourth ones (Windows) made a check disk that lasted more that 6 hours but finally it worked. Other machines I can't find their attached hard disks. I don't know what happened but I can't find those files. Does upgrading delete files? Is there anyway to restore those files?

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• how to set up domain name, bad request invalid hostname

  - by user45645

  assume i have a domain name which will be forwarded to my public ip (web server) automatically. in IIS 6, ip is public ip port is 6666, advanced - host value is www.hello.com firewall is open for 6666(web server port) and 53(DNS port), DMZ of router is my physical address in DNS, i have already had a zone called oldhello.com. And i expect a new domain name. So i have addded a new zone called hello.com and checked SOA server (P) is one.hello.local. then added a new host called one, full name is one.hello.com, ip address 192.168.7.3(my address in router) and then add a alias(CNAME) www, full name is www.hello.com, FQDN i choose the host i added before (one.hello.com) i expected that when i type the public ip in browser, can it be changed to domain name automatically. if not set host value www.hello.com, use public ip i can see the web however, after set up host value www.hello.com, browser show bad request invalid hostname

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• RDC not working from outside

  - by Cotten

  I've set up Remote Connection according to : http://windows.microsoft.com/is-IS/windows7/allow-remote-desktop-connections-from-outside-your-home-network That is, Allow remote connections to the computer you want to access. Make sure Remote Desktop is able to communicate through your firewall. Find the IP address of the computer on your home network that you want to connect to. Open your router's configuration screen and forward TCP port 3389 to the destination computer's IP address. Find your router's public IP address so that Remote Desktop can find it on the Internet. When I'm inside the LAN, RDC works flawlessly. When I try to connect to the ip given by my ISP it cannot connect. I've setup port forwarding for 3389 on my netgear router. Thanks!

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• ideas on multiplayer games which include lots of collaboration?

  - by user494461

  For my master thesis I wanted to design a small multiplayer game which includes more than one player(maybe 5), has 2-3 players collaborating at a time to achieve some task. The most important thing is realistic simulation of the movable objects in the scene which more than one player should simultaneously interact with. I would also prefer large virtual environments (VEs) like mmogs where groups of players are interacting in different areas of the VE. tasks for players should include 2-3 players touching movable objects at same time. e,g, a very basic task can be users lifting a cube together and pushing it through a hole I am not new to designing virtual environments with openGL, but have never designed games before and rarely play other than few of my favorite ones like Fifa. I wanted some ideas on what kind of games should I look at which should help me with ideas for my tasks for the users to gain points and win in games? any current indie games which might inspire me?

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• Spaces in type attribute for Behavior Extension Configuration Issues

  - by Shawn Cicoria

  If you’ve deployed your WCF Behavior Extension, and you get a Configuration Error, it might just be you’re lacking a space between your “Type” name and the “Assembly” name. You'll get the following error message: Verify that the extension is registered in the extension collection at system.serviceModel/extensions/behaviorExtensions So, if you’ve entered as below without <system.serviceModel> <extensions> <behaviorExtensions> <add name="appFabricE2E" type="Fabrikam.Services.AppFabricE2EBehaviorElement,Fabrikam.Services, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"/> </behaviorExtensions> </extensions> The following will work – notice the additional space between the Type name and the Assembly name: <system.serviceModel> <extensions> <behaviorExtensions> <add name="appFabricE2E" type="Fabrikam.Services.AppFabricE2EBehaviorElement,Fabrikam.Services, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"/> </behaviorExtensions> </extensions>

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• FatCow and iPage real deal?

  - by Tribbey

  I need a cheap host that I can upgrade if needed for a startup. From searching, FatCow and iPage seem reliable and inexpensive web hosting services with a Unix OS and good bandwidth + disk space. I suspect they were bought from the same company. They propose to offer unlimited bandwidth/disc space and perks like AdSense/Facebook credit however, they're packages range from 1-3 years @ 3.15 USD/mo, there isn't a monthly package but they do allow you to cancel at anytime and there servers run on wind-mill generated energy which is a plus. I was suspicious because I couldnt seem to find one negative review about them, just affiliate pages until I read a review explaining they're strict policies on copywritten data. Has anyone experience with one of these two hosts?

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• Why do Google search results include pages disallowed in robots.txt?

  - by Ilmari Karonen

  I have some pages on my site that I want to keep search engines away from, so I disallowed them in my robots.txt file like this: User-Agent: * Disallow: /email Yet I recently noticed that Google still sometimes returns links to those pages in their search results. Why does this happen, and how can I stop it? Background: Several years ago, I made a simple web site for a club a relative of mine was involved in. They wanted to have e-mail links on their pages, so, to try and keep those e-mail addresses from ending up on too many spam lists, instead of using direct mailto: links I made those links point to a simple redirector / address harvester trap script running on my own site. This script would return either a 301 redirect to the actual mailto: URL, or, if it detected a suspicious access pattern, a page containing lots of random fake e-mail addresses and links to more such pages. To keep legitimate search bots away from the trap, I set up the robots.txt rule shown above, disallowing the entire space of both legit redirector links and trap pages. Just recently, however, one of the people in the club searched Google for their own name and was quite surprised when one of the results on the first page was a link to the redirector script, with a title consisting of their e-mail address followed by my name. Of course, they immediately e-mailed me and wanted to know how to get their address out of Google's index. I was quite surprised too, since I had no idea that Google would index such URLs at all, seemingly in violation of my robots.txt rule. I did manage to submit a removal request to Google, and it seems to have worked, but I'd like to know why and how Google is circumventing my robots.txt like that and how to make sure that none of the disallowed pages will show up in their search results. Ps. I actually found out a possible explanation and solution, which I'll post below, while preparing this question, but I thought I'd ask it anyway in case someone else might have the same problem. Please do feel free to post your own answers. I'd also be interested in knowing if other search engines do this too, and whether the same solutions work for them also.

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• How to restore my D Drive

  - by buggi

  I need help in recovering one of my drives from my windows7 machine. I used to have two drives, c and d. I used D to save all my data. i have been using my laptop from 3years. and when I saw it today, i cant find D drive on my computer :( . When I opened the parititioning wizard it showed me that the space I allocated for D is there but as unallocated space. I badly need the data from D. Can you please suggest if I can use ubuntu to recover D? Thanks in advance.

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• How do you conquer the challenge of designing for large screen real-estate?

  - by Berin Loritsch

  This question is a bit more subjective, but I'm hoping to get some new perspective. I'm so used to designing for a certain screen size (typically 1024x768) that I find that size to not be a problem. Expanding the size to 1280x1024 doesn't buy you enough screen real estate to make an appreciable difference, but will give me a little more breathing room. Basically, I just expand my "grid size" and the same basic design for the slightly smaller screen still works. However, in the last couple of projects my clients were all using 1080p (1920x1080) screens and they wanted solutions to use as much of that real estate as possible. 1920 pixels across provides just under twice the width I am used to, and the wide screen makes some of my old go to design approaches not to work as well. The problem I'm running into is that when presented with so much space, I'm confronted with some major problems. How many columns should I use? The wide format lends itself to a 3 column split with a 2:1:1 split (i.e. the content column bigger than the other two). However, if I go with three columns what do I do with that extra column? How do I make efficient use of the screen real estate? There's a temptation to put everything on the screen at once, but too much information actually makes the application harder to use. White space is important to help make sense of complex information, but too much makes related concepts look too separate. I'm usually working with web applications that have complex data, and visualization and presentation is key to making sense of the raw data. When your user also has a large screen (at least 24"), some information is out of eye sight and you need to move the pointer a long distance. How do you make sure everything that's needed stays within the visual hot points? Simple sites like blogs actually do better when the width is constrained, which results in a lot of wasted real estate. I kind of wonder if having the text box and the text preview side by side would be a big benefit for the admin side of that type of screen? (1:1 two column split). For your answers, I know almost everything in design is "it depends". What I'm looking for is: General principles you use How your approach to design has changed I'm finding that i have to retrain myself how to work with this different format. Every bump in resolution I've worked through to date has been about 25%: 640 to 800 (25% increase), 800 to 1024 (28% increase), and 1024 to 1280 (25% increase). However, the jump from 1280 to 1920 is a good 50% increase in space--the equivalent from jumping from 640 straight to 1024. There was no commonly used middle size to help learn lessons more gradually.

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• How do I create email addresses for all my users using my domain ([email protected])?

  - by user33012

  My client wants to create email addresses for all their dotnetnuke users using their domain. The point is to keep the user's email addresses 'private' while still allowing communication through a public email address that they can control. It's not necessary to have a full webmail interface (although that would be nice). I'm thinking it would be enough just to forward any mail on and just act as a gateway. So if an email was sent to [email protected], it would be forwarded on to the email address associated with the dotnetnuke account with username 'rwain'. Is this possible to do in a shared hosting environment? Or do I need to create some custom mail server that does a conversion of the email address and forwards it?

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• How to configure multiple addresses on a single interface using Fedora 16

  - by cg.

  I upgraded from Fedora 14 to 16, recently. I had two static IP v4 addresses configured on my ethernet interface by creating two files in /etc/sysconfig/network-scripts: ifcfg-eth0 -> first address ifcfg-eth0:1 -> second address After the upgrade, this resulted in an error message during the boot process and in only the second address being successfully configured on the interface. So, what is the correct way to configure multiple addresses on a single interface on Fedora 16? I could not find anything on this subject in the documentation so far.

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• Issue updating domain name servers from BlueHost to AWS

  - by cowls

  I am trying to migrate my site hosting from bluehost to AWS cloud based service. I have the site up and running on AWS with an elastic IP configured, it loads fine when I specify the IP address in the browser. I have gone into Route 53 on the AWS console and created a "hosted zone" for the domain. I then created a new record set of type "A" using the IP address as the value. I have a domain name registered with bluehost. Ive logged into the bluehost account and updated the domain name servers to point to those specified in Route 53 in the AWS console. When I hit the IP address directly the site loads, however it doesn't load when using the domain name (I get a google chrome oops error page saying page is not found) I've tried using this site: http://dns.squish.net/ to debug but it seems to be giving me the correct results. fizaclegems.com 300 IN A 107.20.209.78 Where 107.20.209.78 matches the elastic IP configured in the AWS console. This is the result it gives for all 4 name servers. Am I missing a step here? Does anyone know what else I should be doing or looking for?

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• Cannot boot Windows 7 after installing Ubuntu 13.04

  - by whowantsakookie

  So I boot up my computer after installing Ubuntu 13.04. Grub correctly shows me all available boot options and I am able to boot to Ubuntu. However, when I try to boot into Windows 7, grub hangs at a purple screen. I have an HP laptop. It came with all four primary partitions taken up by the Windows bootloader, the actual Windows partition, one called HP_TOOLS, and another for HP Restore. I was able to back up and delete HP_TOOLS and the recovery partition, and change my disk type from Dynamic to Basic (GParted doesn't recognize Dynamic drives). I then booted into a live session of Ubuntu and made two partitions with GParted: one large partition for storage space that I could use between the two operating systems (sda4), and another extended partition (sda3) which contained Ubuntu (sda6) and it's swap space (sda5). It currently looks like this: I'm not sure if the second paragraph is actually relevant, I just want you to know all the variables in the equation. Thank you in advance for helping this poor noob.

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• Running 32 bit SQL Server 2005 on 64 bit Windows Server?

  - by TooFat

  If I have a 32 bit version of SQL Server 2005 running on a 64 bit Windows Server does the max amount of memory avail. the SQL Server process increase from 2gb to 4gb. In reading this blog entry by Mark Russinovich in which he states that "All Microsoft server products and data intensive executables in Windows are marked with the large address space awareness flag" and "Because the address space on 64-bit Windows is much larger than 4GB, something I’ll describe shortly, Windows can give 32-bit processes the maximum 4GB that they can address and use the rest for the operating system’s virtual memory." which leads me to believe that the answer is "yes" but I not totally confident.

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