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• Character movement on a 2D tile map

  - by Chris Morris

  I'm working at making a HTML5 game. Top down, closest thing I can equate it to is the gameboy zeldas, but open world and no rooms. What I have so far is a procedurally generated map in a multi dimensional array. And a starting position on the map. Along with this I have an array of movable and non movable tile ID's. I also have a class for my player and have him being rendered out in the center of the starting tile. My problem however is getting the movement sorted out for the player. I want to be able to have the character free move around the map (pixel by pixel essentially) ontop of this 2D generated world. Ideally this would allow the user to move around the walk able area of the canvas. this is simple enough for me to do, but I am having problems now moving the world. If the user is 20% from the edge of the screen i want the world to start panning in the direction the player is heading. But I'm rather lacking in ideas of how to do this. I've looked around for some tutorials, but am coming up blank on ideas of how to generate the playable area (zoomed in) and to then move this generated area under the player when they reach near the end of the screen. My current idea was to generate a certain amount of tiles full size to fill the screen and place the player i the middle. Then when the user approaches the edge of the screen start generating the tiles offset by the distance moved and the direction. I can kind of see this working but I really have no idea if this is the best or easiest to code of methods for generating the world. sorry for the lack of code but I'm still just in the theory stages of working this all out.

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• Serving images from different domain

  - by Tom Gullen

  Google audit: Serve static content from a cookieless domain (15) 2.65KB of cookies were sent with the following static resources. Serve these static resources from a domain that does not set cookies: If my domain is widgets.com, should I set up a img.widgets.com that servers these resources? How beneficial is this? Edit I setup img.widgets.com to serve images from, and changed all images to this URL. But I still get that message?

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• How to Downgrade Packages on Ubuntu

  - by Chris Hoffman

  Ubuntu’s Update Manager keeps your packages at the latest version, but occasionally a new package version may not work properly. You can downgrade an installed package and lock it at a specific version to prevent it from being updated. This is particularly useful when you run into an updated package with a regression – a bug that prevents things from working properly. How to Banish Duplicate Photos with VisiPic How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It?

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• Shibboleth + IIS and Pound Reverse Proxy

  - by boburob

  Having a bit of a problem getting Shibboleth (SSO) working with ADFS and Pound. The main problem seems to be that: The website address will be https://website.domain.com Pound will then terminate the SSL and forward the traffic to the webserver on a different port (http://server.domain.com:8888) I have set up Shibboleth to protect the address http://server.domain.com:8888, which allows me to retrieve metadata and it all seems to be working fine. However the problem seems to be that ADFS is configured to protect the https website, so when Shibboleth attempts to recieve information from ADFS I get nothing except the following error: A token request was received for a relying party identified by the key 'https://msstagrevproxy.cwpintranet.com/shibboleth', but the request could not be fulfilled because the key does not identify any known relying party trust. Key: https://msstagrevproxy.cwpintranet.com/shibboleth I am not really sure how I can work around this as to retrieve the metadata from Shibboleth I have to use the https address but this does not actually exist in Shibboleth or IIS. Has anyone had any experience with this before or using any other SSO with a reverse proxy that works?

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• How to Easily Optimize & Manage Multiple Computers with Soluto

  - by Chris Hoffman

  Soluto is a quick, simple way to optimize and manage one or more computers – it really shines for managing multiple ones. If you’re already tech support for family or friends, Soluto can save you a lot of time. We’ve written about Soluto in the past, when it was in a closed beta. Anyone can now sign up for a free Soluto account and manage up to five computers from the same account. The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos

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• Static IP configuration causing apt-get errors

  - by JPbuntu

  I am getting errors when running apt-get update or when installing new packages. Although this only happens when the server configured for a static IP address. Changing the configuration back to DHCP and restarting networking fixes the problem, although I want a static IP. Once it is working I can change back to my static IP address and restart networking. Although this only works until I restart the server (restarting the router is ok), and then I start getting the same errors and have to switch back to DHCP. Any ideas on what could be causing this or tips on troubleshooting it? Thanks in advance. here is my static IP configuration: auto eth0 iface eth0 inet static address 192.168.2.2 netmask 255.255.255.0 gateway 192.168.2.1 The apt-get update errors go something like this: A few of these Ign http://us.archive.ubuntu.com precise-backports InRelease then a lot of these Err http://security.ubuntu.com precise-security Release.gpg Something wicked happened resolving 'security.ubuntu.com:http' (-5 - No address associated with hostname) and a lot of these W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/i18n/Translation-en Something wicked happened resolving 'us.archive.ubuntu.com:http' (-5 - No address associated with hostname)

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• Pointing a subdomain to Github Pages

  - by ratage

  I set up an Octopress blog on Github Pages at myusername.github.com. I now want blog.myusername.me (which currently has a Wordpress blog set up) to point to this Octopress blog. So I followed the instructions here on setting up a custom domain: I ran echo 'blog.myusername.me' >> source/CNAME in my Octopress repository, and then ran rake generate and rake deploy to deploy it to Github. I went to Namecheap, and added a new CNAME under my myusername.me domain: "blog - myusername.github.com - CNAME". Waited a couple hours. However, now when I go to myusername.github.com, it redirects me to blog.myusername.me (which is my old Wordpress blog), which seems like the inverse of what I want. (Going to blog.myusername.me directly still shows my Wordpress blog.) I checked http://www.whatsmydns.net/#CNAME/blog.myusername.me and it seems like my DNS has propagated (myusername.github.com shows up in the right-hand side). Any ideas what I'm doing wrong?

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• Web.NET event coming in October

  - by Chris Massey

  If you’re a web developer in Europe (or would like an excuse to travel to Europe), you should definitely take a look at the Web.NET event coming in October. It’s being organized by two Italian web maestros (Simone Chiaretta and Ugo Lattanzi) and the session list looks fantastic. The event site pretty much speaks for itself, but here’s a quick version: It’s a free one-day event on October 20th, with a huge variety of great sessions by great speakers, all 100% focused on web development. There’s a pizza-fuelled hackathon in the evening; thrills, spills and hot new skills. It’s a great chance to network with the local (in relative terms) web development community. It’s free (although all donations are very greatly appreciated). It’s in Milan, darling. Here’s what you need to do: Go and register on www.webnetconf.eu, and vote on which sessions you think look the most interesting. I know this will be a difficult process – it’s *very* hard to choose – but persevere! Grab your place when the free tickets become available early next month (places are limited). Come to Milan in October, learn some new skills, meet some great people, and maybe build something awesome if you feel like staying up late. I’ll be there, and hopefully I’ll see you on the day.

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• Exécuter un DSL basé sur Eclipse XText, par Georges KEMAYO

  Bonjour à tous. Je vous présente ici le dernier article sur la série Xtext : http://gkemayo.developpez.com/eclips...-sous-eclipse/. Cette fois ci, nous présentons une possibilité d'ajout de nouveaux Composants à Eclipse, pour manipuler votre DSL. Ainsi, non seulement après avoir créé un langage, on est capable de l'intégrer à Eclipse et d'exécuter des programmes du DSL. Cet article montre de façon basique et académique, comment il est possible d'enrichir un projet Xtext pour lui ajouter le code du compilateur, de l'exécuteur, ... de votre DSL. Notons que les codes sources développés sont des codes de haut niveau ( ex : code java), qui seront ens...

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• Wordnik Accelerator

  - by prabhpreet

  Wow, creating IE Accelerators is superbly easy. If you want to learn how to create one, go here (some MSDN blog) and the MSDN documentation (clearly written). I was fed up of dictionary.com bringing all those popups and the stupid definitions of Google's dictionary. So I decided to scratch my own itch. I randomly stumbled on the site called Wordnik and it provides with all examples plus definitions plus lots more for words and its popup-free (as far as I know). So I decided to write and accelerator. Here is the source code (Yes, this is it): <?xml version="1.0" encoding="utf-8"?> <os:openServiceDescription xmlns:os="http://www.microsoft.com/schemas/openservicedescription/1.0"> <os:homepageUrl>http://www.wordnik.com</os:homepageUrl> <os:display> <os:name>View on Wordnik</os:name> <os:description>Looking up words on an awesome word site called Wordnik </os:description> <os:icon>http://www.wordnik.com/favicon.ico</os:icon> </os:display> <os:activity category="Define"> <os:activityAction context="selection"> <os:execute method="get" action="http://www.wordnik.com/words/{selection}" ></os:execute> </os:activityAction> </os:activity> </os:openServiceDescription> That’s it. To get it, go here. Enjoy!

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• Redirect with .htacess - URL with regex to URL

  - by nicorellius

  I have a temporary need to redirect some installer files on my web site. The redirects that are working now look something like this: Redirect 301 /installer_1.0.0.zip http://www.example.com/download/installer_1.0.3.zip Redirect 301 /installer_1.0.1.zip http://www.example.com/download/installer_1.0.3.zip Redirect 301 /installer_1.0.2.zip http://www.example.com/download/installer_1.0.3.zip I would like to use a regex instead of having multiple lines for each version I need to redirect. I have tried these options with no success: Redirect 301 /installer_(.*).zip http://www.example.com/download/installer_1.0.3.zip Redirect 301 /installer_([0-9+]\.[0-9+]\.[0-9+]).zip http://www.example.com/download/installer_1.0.3.zip Should these work or am I doing something wrong? Thanks.

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• apt-get upgrade stuck at the same package

  - by decibyte

  Current status I've started to suspect this is not an Ubuntu issue, but related to the internet connection here at my work. Until I'm sure, Im leaving my question below: Original question I'm stuck, can't upgrade my system. Running sudo apt-get upgrade gives me the following: mmm@alalunga:~$ sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done The following packages have been kept back: ginn libgrip0 linux-generic-pae linux-headers-generic-pae linux-image-generic-pae The following packages will be upgraded: apport apport-gtk bind9-host build-essential dhcp3-client dhcp3-common dnsutils eog evince evince-common firefox firefox-branding firefox-dbg firefox-globalmenu firefox-gnome-support firefox-locale-en gimp gimp-data gir1.2-totem-1.0 glib-networking glib-networking-common glib-networking-services gnupg gpgv icedtea-6-jre-cacao icedtea-6-jre-jamvm icedtea-6-plugin icedtea-netx icedtea-netx-common icedtea-plugin isc-dhcp-client isc-dhcp-common libapache2-mod-php5 libart-2.0-2 libbind9-80 libdns81 libevince3-3 libgimp2.0 libisc83 libisccc80 libisccfg82 liblwres80 libssl-dev libssl-doc libssl1.0.0 libtotem0 linux-firmware linux-libc-dev openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib openssl php-pear php5-cli php5-common php5-curl php5-dev php5-gd php5-mysql php5-xsl policykit-1-gnome python-apport python-django python-gst0.10 python-problem-report resolvconf thunderbird thunderbird-globalmenu thunderbird-gnome-support totem totem-common totem-mozilla totem-plugins xserver-xorg-input-synaptics 74 upgraded, 0 newly installed, 0 to remove and 5 not upgraded. Need to get 317 MB/327 MB of archives. After this operation, 1.481 kB of additional disk space will be used. Do you want to continue [Y/n]? Get:1 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:2 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:3 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:4 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:5 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:6 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:7 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] 9% [7 openjdk-6-jre-headless 27,3 MB/27,3 MB 100%] It keeps downloading the package openjdk-6-jre-headless, then does nothing for a while (hanging on what's the last line above), then download the package again. It's at its 13th download attempt at the moment of writing. The actual downloads seem to be done just fine, but whatever it does after downloading seems to be failing. I tried removing openjdk-6, but then it wanted to install openjdk-7 instead, with the same result, hanging at openjdk-7-jre-headless instead. I also tried changing servers from my local (Danish) to the main server. No luck. It's also keeping me from upgrading alle the other packages. What to do? Update After following instructions in the answer by @lpanebr, it is now stuck at the linux-firmware package. So, maybe it's a more general problem than being related to specific package(s)? Although it did download some packages without problems before getting stuck at linux-firmware.

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• How To Use Windows 8's Gestures on a Laptop Trackpad

  - by Chris Hoffman

  While Windows 8 may seem a bit out of place on hardware without a touch screen, trackpad gestures can help bridge the gap. Gestures on a trackpad work similarly to gestures on a touch screen. Instead of moving the cursor to the corners of the screen, you can swipe the trackpad to reveal hidden menus and pinch your fingers to zoom in and out. Image Credit: Michael Mol on Flickr 7 Ways To Free Up Hard Disk Space On Windows HTG Explains: How System Restore Works in Windows HTG Explains: How Antivirus Software Works

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• Antenna Aligner Part 3: Kaspersky

  - by Chris George

  Quick one today. Since starting this project, I've been encountering times where Nomad fails to build my app. It would then take repeated attempts at building to then see a build go through successfully. Rob, who works on Nomad at Red Gate, investigated this and it showed that certain parts of the message required to trigger the 'cloud build' were not getting through to the Nomad app, causing the HTTP connection to stall until timeout. After much scratching heads, it turns out that the Kaspersky Internet Security system I have installed on my laptop at home, was being very aggressive and was causing the problem. Perhaps it's trying to protect me from myself? Anyway, we came up with an interim solution why the Nomad guys investigate with Kaspersky by setting Visual Studio to be a trusted application with the Kaspersky settings and setting it to not scan network traffic. Hey presto! This worked and I have not had a single build problem since (other than losing internet connection, or that embarrassing moment when you blame everyone else then realise you've accidentally switched off your wireless on the laptop).

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• HTG Explains: What Is Open-Source Software and Why You Should Care

  - by Chris Hoffman

  Geeks often describe programs as being “open source” or “free software.” If you’re wondering exactly what these terms mean and why they matter, read on. (No, “free software” doesn’t just mean that you can download it for free.) Whether a program is open-source or not doesn’t just matter to developers, it ultimately matters for users, too. Open-source software licenses give users freedoms they would not otherwise have. Image Credit: Quinn Dombrowski on Flickr How To Use USB Drives With the Nexus 7 and Other Android Devices Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder? Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It

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• Le créateur de Minecraft dévoile 0x10c, un nouveau jeu ou l'utilisateur sera amené à programmer

  Le créateur de Minecraft dévoile 0x10c un nouveau jeu ou l'utilisateur sera amené à programmer Après le succès de Minecraft, le créateur du jeu de construction mêlant action et réflexion dans un environnement pixélisé 3D s'est lancé récemment dans un nouveau projet. Markus Persson a dévoilé un nouveau projet baptisé 0x10c, qui est une sorte de jeu de science-fiction où l'utilisateur tient les rênes d'un vaisseau spatial. 0x10c reprend plusieurs idées ayant entrainé le succès de Minecraft, avec plusieurs contenus créés par l'utilisateur qui pourra personnaliser son environnement et un graphisme relativement simple. [IMG]http://rdonfack.developpez.com/0x10c.jpg[/IM...

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• Mise en oeuvre de composants web via le framework Ellipse, par l'équipe Ellipse

  L'objectif de ce nouveau tutoriel est de vous montrer comment créer des composants web réutilisables via le framework Ellipse. Deux types de composants web peuvent être envisagés : un composant web définit dans une simple classe Java, ou bien un composant web à base d'un modèle XML (TemplatedComponent) afin d'y stocker la mise en page pour le rendu HTML. Bien entendu, nous allons utiliser le plugin Ellipse afin de nous simplifier la construction de ces éléments. Ce tutoriel est accessible à partir de l'adresse suivante : http://ellipse.developpez.com/tutori...s-web-ellipse/ Si vous avez des commentaires ou des questions, n'hésitez pas à compléter cette discussion.

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• Does Google AdWords care about duplicate content?

  - by Yarin

  Our site offers several families of products, all of which have a common set of configurations. For simplicity's sake, we'll say we offer products A, B and C, each with configurations 1, 2 and 3 Products: A, B, C Configurations: 1, 2, 3 We want to create landing page <- ad group combinations that reflect each possible combination of each product and configuration. Each product and each configuration have their own page, and so each landing page would have include the product content and the configuration content: ourproducts.com/A-1 (Contains copy for A and 1) ourproducts.com/A-2 ourproducts.com/A-3 ourproducts.com/B-1 ... etc... As you can see, this will lead to duplicate content across our product pages, though in different combinations. My question is, does this matter from AdWords point of view? Will there be any negative consequence to repeating portions of content this way?

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• Commodore relance l'Amiga et le C64 avec des versions modernisées de ses classiques des années 80

  Commodore relance l'Amiga et le C64 La société sort des versions modernisées de ses classiques des années 80 Il y a des noms qui inspirent la nostalgie. Amstrad CPC 464 ou 6128, par exemple. Ou Atari ST. Et à coup sûr Commodore C64 et Amiga. [IMG]http://ftp-developpez.com/gordon-fowler/Commodore/C64.png[/IMG] Et bien que les nostalgiques se réjouissent, Commodore USA a eu la bonne idée de relancer ses deux références mythiques. Le C64 nouvelle version se présente sous la forme d'un clavier qui cache une carte mère mini-ITX PC, un processeur Atom Dual Core 525 et un chipset graphique de chez nVidia (le ION2). [IMG]http://f...

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• HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It

  - by Chris Hoffman

  You’ve probably heard that you need to overwrite a drive multiple times to make the data unrecoverable. Many disk-wiping utilities offer multiple-pass wipes. This is an urban legend – you only need to wipe a drive once. Wiping refers to overwriting a drive with all 0’s, all 1’s, or random data. It’s important to wipe a drive once before disposing of it to make your data unrecoverable, but additional wipes offer a false sense of security. Image Credit: Norlando Pobre on Flickr HTG Explains: Learn How Websites Are Tracking You Online Here’s How to Download Windows 8 Release Preview Right Now HTG Explains: Why Linux Doesn’t Need Defragmenting

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• If-Else V.S. Switch end of flow

  - by Chris Okyen

  I was wondering the if if-else statements, is like a switch statement that does not have a break statement.To clarify with an example, will the if-else statement go through all the boolean expressions even if comes to one that is true before the final one... I.E., if boolean_expression_1 was true, would it check if boolean_expression_2 is true? If not, why do switch statements need break statements but if-else statements do not? And if they do, I ask the opposite sort question proposed in the previous sentence. if( boolean_expression_1 ) statement_1 else if( boolean_expression_2 ) statement_2 else default_statement switch( controlling_expression ) { case: ( A ) .... case: ( z ) }

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• Twin Cities Code Camp 8 (EIGHT?!?)

  - by Chris Williams

  Yep, Twin Cities Code Camp EIGHT is just around the corner (11 days from this writing.) We've got some great sessions lined up, and a mini-mountain of swag to give away. If you haven't registered yet, we're ALMOST at capacity... so don't delay. See you there...

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• No longer able to boot stuck in busybox shell

  - by Chris J. Lee

  I've installed win 7 and ubuntu 11.04. After a storm killed the power. i'm unable to boot. I'm stuck in the busybox shell (ash). Here's what happens when i boot: Bios loads Grub displays option to load: ubuntu ubuntu recovery memtest another memtest option win7 win 7 recovery I load Ubuntu This cause it to load and i see no normal ubuntu screen just the busybox shell I try loading ubuntu via fsck -l; and it returns me a /bin/sh not found error. I load windows 7 and i'm unable to boot. I get a blue screen of death I then load ubuntu recovery and i don't have any luck either. Any ideas where to go from here?

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• Use Google Analytics to target different sections of a blog

  - by Emily Yao

  I have a blog that targets different regions. The Europe region blog has different sections in different local languages such as English, French and German. I wonder how to track and analyze the different sections. My initial thought is to search the domain URL, but I found it is not a good idea. For example, the URL for the Europe blog is like www.myblog.com/europe. If you click the French section, the URL is like www.myblog.com/europe/language/french. If you click an article in the French section, it is like www.myblog.com/article_name. Notice the article link is not www.myblog.com/language/french/article_name!

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• Can a NodeJS webserver handle multiple hostnames on the same IP?

  - by Matthew Patrick Cashatt

  I have just begun learning NodeJS and LOVE it so far. I have set up a Linux box to run it and, in learning to use the event-driven model, I am curious if I can use a common IP for multiple domain names. Could I point, for example, www.websiteA.com, www.websiteB.com, and www.websiteC.com all to the same IP (node webserver) and then route to the appropriate source files based on the request? Would this cause certain doom when it came to scaling to any reasonable size?

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