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  • How can i get almost pixel perfect collision detection in a multiplayer game?

    - by Freddy
    I'm currently working on a multiplayer game for iPhone. The problem i have, as with all multiplayer games, is that the other user will always see everything at a non-constant delay. The game I'm making need to have a almost pixel perfect collision detection, but 1 or 2 pixels off is not that big of a deal. How can I possibly get this working? I guess I could just set local player to also be at X ms delay. However this will probably just be worse and feel sloppy when the user input. I know this problem is probably something network programmers deal with everyday and I would be glad if someone could give me a possible solution for this.

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  • Detecting tile with height in isometric game

    - by Carlos Navarro
    I'm trying to create an isometric tile-based game (for iPhone) and I'm having trouble with height in tiles. What I currently do (without heights) is apply some mathematic transformations to my 2D-matrix (which represent the tiles) so that I know where in the screen (x,y) should I place the isometric tile. Then, when the user clicks somewhere in the screen, I take that values and pass them through a function (kind of f^-1) to get which tile it belongs to. This works perfectly. My problem is: imagine that I want some tiles to have a different height from others. In order to draw the tile itself its pretty simple, since the z-coordinate has no transformation in the isometric approach used in games (z'=z). BUT what if I want to calculate the tile coordinate (defined by X-tile and Y-tile) from the touch coordinates (x,y)? Any guess?

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  • Are there any adverse side effects to loading html5shiv in every browser?

    - by Jeff
    On the html5shiv Google Code page the example usage includes an IE conditional: <!--[if lt IE 9]> <script src="dist/html5shiv.js"></script> <![endif]--> However on the html5shiv github page, the description explains: This script is the defacto way to enable use of HTML5 sectioning elements in legacy Internet Explorer, as well as default HTML5 styling in Internet Explorer 6 - 9, Safari 4.x (and iPhone 3.x), and Firefox 3.x. An obvious contradiction. So to satisfy my curiosity, for anyone who has studied the code, are there any adverse side affects to loading html5shiv in every browser (without the IE conditional)? EDIT: My goal, obviously, is to use the shiv without the IE conditional.

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  • Should all, none, or some overridden methods call Super?

    - by JoJo
    When designing a class, how do you decide when all overridden methods should call super or when none of the overridden methods should call super? Also, is it considered bad practice if your code logic requires a mixture of supered and non-supered methods like the Javascript example below? ChildClass = new Class.create(ParentClass, { /** * @Override */ initialize: function($super) { $super(); this.foo = 99; }, /** * @Override */ methodOne: function($super) { $super(); this.foo++; }, /** * @Override */ methodTwo: function($super) { this.foo--; } }); After delving into the iPhone and Android SDKs, I noticed that super must be called on every overridden method, or else the program will crash because something wouldn't get initialized. When deriving from a template/delegate, none of the methods are supered (obviously). So what exactly are these "je ne sais quoi" qualities that determine whether a all, none, or some overriden methods should call super?

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  • Writing a basic shader for large input files

    - by Zoltan Varadi
    I started writing a shader for my iOS app and instead of starting from scratch i used this tutorial here: http://www.raywenderlich.com/3664/opengl-es-2-0-for-iphone-tutorial I wrote an import function, first to import wavefront .obj models. My problem is that with I can't handle larger inputs (with a simple cube it was working). I realized that the indices array is an array of GLubyte values, which is unsigned char, so as a result i cant have more than 256 indexes. I modified it to GLuint, but then only get a blank screen. What else needs to me modified? p.s.: the source can be downloaded from here: http://d1xzuxjlafny7l.cloudfront.net/downloads/HelloOpenGL.zip

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  • Next Week - OTN Virtual Developer Day - Fusion Development Experience

    - by Shay Shmeltzer
    Don't miss your chance to get free training on Oracle's strategic development platform including Oracle ADF and the rest of Fusion Middleware. On July 10th, we are running a virtual developer conference that you can attend directly from your desktop. We have sessions covering everything from basic ADF topics such as the Controller and ADF Faces to sessions about the latest news in the ADF world including ADF development with Eclipse using OEPE and ADF Mobile for iPhone and Android development. A special track will expose you to ADF connection to the rest of FMW including BPM, WebCenter and BI. During the sessions you'll be able to chat with the presenters, and you can also do a hands-on lab. So sign up today and join us on Tuesday.

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  • Apple prêt à attaquer les codecs open-source en justice : Steve Jobs entend-il imposer le H.264 par

    Apple prêt à attaquer les codecs open-source en justice Steve Jobs entend-il imposer le H.264 par tous les moyens ? Steve Jobs veut en découdre. Après s'en être pris frontalement au Flash dans une lettre ouverte, c'est au tour des codecs libres d'être dans le viseur du PDG d'Apple. L'histoire commence donc avec cette lettre ouverte. Steve Jobs y affirme que la plateforme de développement de l'iPhone est plus libre que Flash, qui serait lui une technologie fermée. Le PDG d'Adob...

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  • L'AppStore dans le collimateur des autorités américaines ? Steve Jobs répond par ailleurs à une question sur les applications SaaS

    Les nouvelles conditions de l'AppStore dans le viseur des autorités américaines ? Steve Jobs répond à une question sur les applications SaaS Mise à jour du 23/02/2011 par Idelways La Commission Fédérale américaine du Commerce (FTC) serait sur le point de lancer une enquête sur la gestion des paiements à partir des applications de l'App Store d'Apple. Cette initiative surgit après la publication par le Washington Post d'un rapport traitant les cas de parents forcés de payer des factures prohibitives générées par les achats de leurs enfants à partir des applications de l'iPhone, iPad et iPod. Selon les plaig...

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  • Why is Android VM-based? [closed]

    - by adib
    By about 2004, it was clear that ARM is the clear winner for mobile CPUs, beating out MIPS, SH3, and DragonBall. PocketPC (Windows Mobile) applications was natively-compiled (at least most of them - except for .NET compact and its competitors). Likewise, Apple's iOS (named iPhone OS at the time) prefers natively-compiled applications. Then why Android chose a virtual machine based system stack? (the Dalvik VM). Wouldn't it be simpler to just compile applications down to ARM code using GCJ or something? Is the decision influenced by the J2ME-way of doing things, or was just because it's "cool"? Perhaps like most things Java, the culture that prefers multiple levels of indirection and abstractions, they just added another layer of abstraction for "just in case"?

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  • Oracle Launches Mobile User Experiences Design Patterns

    - by asantaga
    Mobile design requires a different way of thinking. Use Oracle’s mobile design patterns to design iPhone, Android, or browser-based smartphone applications.  We are sharing our mobile design patterns and their baked-in, scientifically proven usability to enable Oracle customers and partners to build mobile apps quickly. Our design patterns are common solutions that developers can easily apply across all application suite products. Crafted by our insight into Oracle Fusion Middleware, the patterns are designed to work with the mobile technology provided by the Oracle Application Development Framework.  Normal 0 false false false false EN-US JA X-NONE

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  • NPOT texture and video memory usage

    - by Eonil
    I read in this QA that NPOT will take memory as much as next POT sized texture. It means it doesn't give any benefit than POT texture with proper management. (maybe even worse because NPOT should be slower!) Is this true? Does NPOT texture take and waste same memory like POT texture? I am considering NPOT texture for post-processing, so if it doesn't give memory space benefit, using of NPOT texture is meaningless to me. Maybe answer can be different for each platforms. I am targeting mobile devices. Such as iPhone or Androids. Does NPOT texture takes same amount of memory on mobile GPUs?

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  • What tools should I consider if my aim is to make a game available to as many platforms as possible?

    - by Kensai
    We're planning on developing a 2D, grid-based puzzle game, and although it's still very early in the planning stages, we'd like to make our decisions well from the beginning. Our strategy will be to make the game available to as many platforms as possible, for example PCs (Windows, Mac and/or Linux), mobile phones (iPhone and/or Android based phones), game consoles (XBLA and/or PSN) PC will have an emphasis, but I believe that's the most flexible platform so that shouldn't be a problem. So, what programming language, game engine, frameworks and all around tools would be best suited for our goal? P.S.: I'm betting a set of tools won't cover ALL of them, and that there will still be some kind of "translating" effort for some platforms, but we'd like to know what the most far reaching are.

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  • Sponsored Giveaway: Free Copies of WinX DVD Ripper Platinum for All How-To Geek Readers

    - by The Geek
    Have you ever wanted to watch a movie on your iPad, iPhone, Android tablet, or even your computer… without having to pay to download it from iTunes? You can easily convert DVDs to digital formats using WinX DVD Ripper Platinum, and we’re giving away free copies to all How-To Geek readers. To get your free copy, just click through the following link to download and get the license code, as long as you download it by November 27th. For Windows users: http://winxdvd.com/giveaway/ For Mac users: http://www.macxdvd.com/giveaway/giveaway.htm   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 How To Delete, Move, or Rename Locked Files in Windows

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  • Apple soupçonné d'anti-compétitivité avec sa régie publicitaire iAd, une investigation d'antitrust p

    Mise à jour du 14.06.2010 par Katleen Apple soupçonné d'anti-compétitivité avec sa régie publicitaire iAd, une investigation d'antitrust pourrait bientôt être lancée D'après le très sérieux Financial Times, Apple pourrait écoper très bientôt d'une enquête pour Antitrust, afin de déterminer si l'iAd serait trop préjudiciable à des sociétés comme Microsoft ou Google au niveau de la publicité sur iPhone et iPad. Les régulateurs américains s'interessent de près aux agissements de la firme à la pomme. On ne sait pas encore qui de la Federal Trade Commission ou de l'U.S. Department of Justice investiguera l'affaire. Les nouvelles conditions d'utilisation du service pour les développeurs ajo...

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  • Nokia aurait abandonné le développement de son Smartphone sous MeeGo et aurait opté pour Windows Phone 7

    Nokia aurait abandonné le développement de son Smartphone sous MeeGo et se serait allié à Microsoft Les rumeurs ne font que s'enchainer sur le net concernant l'avenir de l'OS mobile de Nokia MeeGo depuis la publication d'un memo interne expédié à tous les employés de la firme par son PDG Stephen Elop. Dans ce memo le PDG de Nokia fait une comparaison extrême en présentant sa firme comme étant une entreprise sur une plate-forme pétrolière en flamme, avant de conclure que des changements radicaux de comportements doivent être effectués. Elop fait un constat plutôt mitigé de la situation actuelle : « La première génération d'iPhone est sortie en 2007, et nous n'avons ...

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  • Html5 games, what is the standard dimension to use?

    - by aoi
    I am trying to make html5 games to be played on the browser(not offline apps), and I am trying to support the maximum number of platforms, hence I need to know what dimension should I use for the game canvas so that it works in the most number of places. Also is there anyway to "scale" a large game to fit in the tiny size of iphone(around 320x356px I think). By "scale" I don't mean to actually resize just the canvas, as because that can mess up the coordinate based calculations, and for a large number of objects, re-positioning based on canvas size can be a real hassle.

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  • Looking for bug tracking software

    - by Shelton
    I'm looking for a bug/issue tracking system that can: Integrate with lots of other services. Basecamp, Beanstalk, etc. Integrate popular CMSs, such as WordPress, so the client can enter a ticket from the system that is familiar to them and not have one more login to worry about. Generate reports for my own purposes. Bonus if there's an iPhone app. Doesn't require additional development on my end (I have plenty of money and no time). I've already looked into Lighthouse and ZenDesk -- both are solid offerings -- but don't see what I need out of the box. I'd have to build CMS plug-ins. And I've looked through WP plug-ins for bug tracking software, but nothing I've found integrates with these products. Anyone know of something that meets these requirements without additional development, or am I stuck putting my business on hold to get this piece in place myself?

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  • Windows 8 débutera timidement pour décoller en 2014, selon Forrester, qui met en évidence l'hétérogénéité du marché global des OS

    Windows 8 débutera timidement pour décoller en 2014 selon Forrester, qui met en évidence l'hétérogénéité du marché global des OS À quelques jours de la sortie grand public de Windows 8, le cabinet d'analyse Forrester livre sa vision du futur de l'OS de Microsoft. Selon l'analyste Frank Gillett, vice-président du cabinet Forrester Research, le système d'exploitation va démarrer de façon timide en 2013 sur les PC, puis les ventes vont décoller en 2014. Par contre, Microsoft se positionnera simplement comme un concurrent sur le marché des tablettes et comme un troisième acteur dans le secteur de mobile, loin derrière Android et l'iPhone. Pour Franck Gillett, Microsoft...

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  • How to start embedded development for developing a handheld game console?

    - by Quakeboy
    I work as a iPhone app developer now, so I know a bit of c, c++ and objective c. Also have fiddled with Java and many other. All of them have been just high level application/games development. My final goal is to make a handheld game console. More like a home made NES/SNES handheld console or even an Atari. I have found out about RaspberryPI and Arduino. But I need more information about how to approach this. 1) How Do I learn to pick the best board/cpu/controller/GPU/LCD screen/LCD controller etc? 2) Will learning to make a NES emulator first help me understand this field? If so are there any tutorials?

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  • TIOBE : Objective-C plus populaire que C++, le langage d'Apple entre dans le top 3 du classement

    TIOBE : Objective-C plus populaire que C++ le langage d'Apple entre dans le top 3 du classement Mise à jour du 03/07/2012 La popularité de l'iPhone et de l'iPad se fait ressentir sur l'indice Tiobe pour le mois de juillet. Le classement des langages les plus populaires par Tiobe au cours de cette période montre une hausse considérable de la part de marché de l'Objective-C, déclassant ainsi C++. Le langage de programmation d'Apple pour ses dispositifs sous iOS entre dans le top trois des langages les plus populaires avec une part de 9,33 %, en hausse de 4,14 % par rapport à la même période de l'an dernie...

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  • Advice Required Regarding Creating a Self Learning, Self Organizing Programming Team....

    - by tGilani
    Hello I'm a senior student at my university and chairperson of IEEE Student Branch there. Recently I was thinking of some idea to acquaint students with the professional environment, how software is produced in the industry and get a practical experience.. Obviously trips to software houses are not enough and we cannot provide this many internships. So the idea of simulating a software house within the university popped in. Resources at my disposal are students with their own laptops, university UPS and lan network with internet access, and a reasonably sized room with a whiteboard and three hours free time daily.. :) However, I have absolutely no idea where to begin with. Milestones or whatever it may be called, are Requirements Document generation, sharing of resources, delegation of tasks, version controlling etc... I'd really appreciate some advice, programming tools (for JAVA), communication tools etc and other things used in a decent software house... Technologies to be targeted shall be random possibly starting with J2EE Spring Hibernate and Later Visual Programming in .NET C# and ASP.NET MVC as well as Android or iPhone development....

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  • Developing For Windows Phone 7 Series with XNA 4.0

    - by Chris Williams
    I have a talk submitted to the Heartland Developers Conference. It's called: Developing For Windows Phone 7 Series with XNA 4.0 Here's a description: Forget Droid, Windows Phone 7 Series is the iPhone killer. If you want to learn to build killer touch-based apps for this next generation mobile device then this is the session for you. We’ll go over phone specific features and how to leverage those features with XNA 4.0 and C# I need your votes in order to give this talk. Please go here: http://www.heartlanddc.com/?p=273 and give the talk a nice high rating to indicate interest. Thanks a bunch!!

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  • Apple - Android : HTC contre-attaque en demandant comme Nokia l'interdiction totale d'importation et

    Mise à jour du 13/05/10 Apple ? Android : HTC contre-attaque En demandant comme Nokia l'interdiction totale d'importation et de vente des iPhone, iPad et iPod HTC met ses pas dans ceux de Nokia. Dans l'affaire qui l'oppose à Apple (lire ci-avant), la société a décidé de contre-attaquer en utilisant la méthode forte, tout comme le constructeur finlandais. HTC, principal utilisateur du système d'exploitation mobile de Google, répond à Apple en l'accusant à son tour de violation de brevets. L'affaire sera portée devant la décidément très occupée ITC (U.S. International Trade Commission). Mais HTC ne s'arrête...

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  • 2012&ndash;The End Of The World Review

    - by Tim Murphy
    The end of the world must be coming.  Not because the Mayan calendar says so, but because Microsoft is innovating more than Apple.  It has been a crazy year, with pundits declaring not that the end of the world is coming, but that the end of Microsoft is coming.  Let’s take a look at what 2012 has brought us. The beginning of year is a blur.  I managed to get to TechEd in June which was the first time that I got to take a deep dive into Windows 8 and many other things that had been announced in 2011.  The promise I saw in these products was really encouraging.  The thought of being able to run Windows 8 from a thumb drive or have Hyper-V native to the OS told me that at least for developers good things were coming. I finally got my feet wet with Windows 8 with the developer preview just prior to the RTM.  While the initial experience was a bit of a culture shock I quickly grew to love it.  The media still seems to hold little love for the “reimagined” platform, but I think that once people spend some time with it they will enjoy the experience and what the FUD mongers say will fade into the background.  With the launch of the OS we finally got a look at the Surface.  I think this is a bold entry into the tablet market.  While I wish it was a little more affordable I am already starting to see them in the wild being used by non-techies. I was waiting for Windows Phone 8 at least as much as Windows 8, probably more.  The new hardware, better marketing and new OS features I think are going to finally push us to the point of having a real presence in the smartphone market.  I am seeing a number of iPhone users picking up a Nokia Lumia 920 and getting rid of their brand new iPhone 5.  The only real debacle that I saw around the launch was when they held back the SDK from general developers. Shortly after the launch events came Build 2012.  I was extremely disappointed that I didn’t make it to this year’s Build.  Even if they weren’t handing out Surface and Lumia devices I think the atmosphere and content were something that really needed to be experience in person.  Hopefully there will be a Build next year and it’s schedule will be announced soon.  As you would expect Windows 8 and Windows Phone 8 development were the mainstay of the conference, but improvements in Azure also played a key role.  This movement of services to the cloud will continue and we need to understand where it best fits into the solutions we build. Lower on the radar this year were Office 2013, SQL Server 2012, and Windows Server 2012.  Their glory stolen by the consumer OS and hardware announcements, these new releases are no less important.  Companies will see significant improvements in performance and capabilities if they upgrade.  At TechEd they had shown some of the new features of Windows Server 2012 around hardware integration and Hyper-V performance which absolutely blew me away.  It is our job to bring these important improvements to our company’s attention so that they can be leveraged. Personally, the consulting business in 2012 was the busiest it has been in a long time.  More companies were ready to attack new projects after several years of putting them on the back burner.  I also worked to bring back momentum to the Chicago Information Technology Architects Group.  Both the community and clients are excited about the new technologies that have come out in 2012 and now it is time to deliver. What does 2013 have in store.  I don’t see it be quite as exciting as 2012.  Microsoft will be releasing the Surface Pro in January and it seems that we will see more frequent OS update for Windows.  There are rumors that we may see a Surface phone in 2013.  It has also been announced that there will finally be a rework of the XBox next fall.  The new year will also be a time for us in the development community to take advantage of these new tools and devices.  After all, it is what we build on top of these platforms that will attract more consumers and corporations to using them. Just as I am 99.999% sure that the world is not going to end this year, I am also sure that Microsoft will move on and that most of this negative backlash from the media is actually fear and jealousy.  In the end I think we have a promising year ahead of us. del.icio.us Tags: Microsoft,Pundits,Mayans,Windows 8,Windows Phone 8,Surface

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  • Should I be using a game engine?

    - by Kyle
    I'm an experienced programmer, but I'm completely new to making games. I'm thinking of making an iPhone game that is similar to a 2d tower defense type game. In the web programming world, it would be a big waste of time to make a website without using some sort of web framework (eg ruby on rails). Is that the same for making games? Do people mostly use some sort of framework/game engine for making a game? If so, what are the popular ones for iOS?

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