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  • What is a "Technical Programmer"? [closed]

    - by Mike E
    I've noticed in job posting boards a few postings, all from European companies in the games industry, for a "Technical Programmer". The job description in both was similar, having to do with tools development, 3d graphics programming, etc. It seems to be somewhere between a Technical Artist who's more technical than artist or who can code, and a Technical Director but perhaps without the seniority/experience. Information elsewhere on the position is sparse. The title seems redundant and I haven't seen any American companies post jobs by that name exactly. One example is this job posting on gamedev.net which isn't exactly thorough. In case the link dies: Subject: Technical Programmer Frictional Games, the creators of Amnesia: The Dark Descent and the Penumbra series, are looking for a talented programmer to join the company! You will be working for a small team with a big focus on finding new and innovating solutions. We want you who are not afraid to explore uncharted territory and constantly learn new things. Self-discipline and independence are also important traits as all work will be done from home. Some the things you will work with include: 3D math, rendering, shaders and everything else related. Console development (most likely Xbox 360). Hardware implementations (support for motion controls, etc). All coding is in C++, so great skills in that is imperative. As I mentioned, the job title has appeared from European companies so maybe it goes by another title in America. What other titles might this specialization of programmer go by?

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  • That Tool is cURLy

    When you just use IE, Firefox or Chrome it can be easy to forget that HTTP is about more then just going to check the latest tech news at Engadget. It is a full and rich protocol, and a great way to experience that richness is the powerful command line utility cURL. cURL has a lot of options, but the syntax starts out simple. You can retrieve the contents of a web page with a simple curl http://blogs.claritycon.com/. The results should be the full text of the web page, tags and all. From there, you can use X to specify the HTTP verb to use, POST, PUT, DELETE, PATCH, etc and d to specify the payload of a POST or PUT. I have found cURL to be incredibly useful for two scenarios. First, as a good way to test basic web services. Second, while working a bit with CouchDB and another document based database, cURL has helped me learn more about RESTful APIs, including different verbs and response codes. cURL is a mainstay in our environments and programming languages precisely because it is simple, powerful and discoverable. I encourage more .NET developers to take a look, bask on the command line for a while and enjoy the plain text of the web. And this excellent logo:     -- Relevant Links -- Its not always the case with manuals, but the manual for cURL is quite useful: http://curl.haxx.se/docs/manual.html To make your command line look a little nicer (and more powerful) on Windows, check out Console and add some transparency effects: http://sourceforge.net/projects/console/Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Best way to go for simple online multi-player games?

    - by Mr_CryptoPrime
    I want to create a trivia game for my website. The graphic design does not have to be too fancy, probably no more advanced than a typical flash game. It needs to be secure because I want users to be able to play for real money. It also needs to run fast so users don't spend their time frustrated with game freezing. Compatibility, as with almost all online products, is key because of the large target market. I am most acquainted with Java programming, but I don't want to do it in Java if there is something much better. I am assuming I will have to utilize a variety of different languages in order for everything to come together. If someone could point out the main structure of everything so I could get a good start that would be great! 1) Language choice for simple secure online multiplayer games? 2) Perhaps use a database like MySQL, stored on a secure server for the trivia questions? 3) Free educational resources and even simpler projects to practice? Any ideas or suggestions would be helpful...Thanks!

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  • Server-side Architecture for Online Game

    - by Draiken
    basically I have a game client that has communicate with a server for almost every action it takes, the game is in Java (using LWJGL) and right now I will start making the server. The base of the game is normally one client communicating with the server alone, but I will require later on for several clients to work together for some functionalities. I've already read how authentication server should be sepparated and I intend on doing it. The problem is I am completely inexperienced in this kind of server-side programming, all I've ever programmed were JSF web applications. I imagine I'll do socket connections for pretty much every game communication since HTML is very slow, but I still don't really know where to start on my server. I would appreciate reading material or guidelines on where to start, what architecture should the game server have and maybe some suggestions on frameworks that could help me getting the client-server communication. I've looked into JNAG but I have no experience with this kind of thing, so I can't really tell if it is a solid and good messaging layer. Any help is appreciated... Thanks ! EDIT: Just a little more information about the game. It is intended to be a very complex game with several functionalities, making some functionalities a "program" inside the program. It is not an usual game, like FPS or RPG but I intend on having a lot of users using these many different "programs" inside the game. If I wasn't clear enough, I'd really appreciate people that have already developed games with java client/server architecture, how they communicated, any frameworks, apis, messaging systems, etc. It is not a question of lack of knowledge of language, more a question for advice, so I don't end up creating something that works, but in the later stages will have to be rewriten for any kind of limiting reason. PS: sorry if my english is not perfect...

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  • Maker Faire Report - Teaching Kids Java SE Embedded for Internet of Things (IoT)

    - by hinkmond
    I had a great time at this year's Maker Faire 2014 in San Mateo, Calif. where Jake Kuramoto and the AppsLab crew including Noel Portugal, Anthony Lai, Raymond, and Tony set up a super demo at the DiY table. It was a simple way to learn how Java SE Embedded technology could be used to code the Internet of Things (IoT) devices on the table. The best part of our set-up was seeing the kids sit down and do some coding without all the complexity of a Computer Science course. It was very encouraging to see how interested the kids were when walking them through the programming steps, then seeing their eyes light up when telling them, "You just coded a Java enabled Internet of Things device!" as the Raspberry Pi-connected devices turned on or started to move from their Java Embedded program. See: The AppsLab at Maker Faire It will be interesting to see how this next generation of kids grow up with all these Internet of Things devices around them and watch how they will program them. Hopefully, they will be using Java SE Embedded technology to do so. From the looks of it at this year's Maker Faire, we might have a bunch of motivated young Java SE Embedded coders coming up the ranks soon. Well, they have to get through middle school first, but they're on their way! Hinkmond

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  • Why is math taught "backwards"? [closed]

    - by Yorirou
    A friend of mine showed me a pretty practical Java example. It was a riddle. I got excited and quickly solved the problem. After it, he showed me the mathematical explanation of my solution (he proved why is it good), and it was completely clear for me. This seems like natural approach for me: solve problems, and generalize. This is very familiar to me, I do it all the time when I am programming: I write a function. When I have to write a similar function, I generalize the problem, grab the generic parts, and refactor them to a function, and solve the original problems as a specialization of the general function. At the university (or at least where I study), things work backwards. The professors shows just the highest possible level of the solutions ("cryptic" mathematical formulas). My problem is that this is too abstract for me. There is no connection of my previous knowledge (== reality in my sense), so even if I can understand it, I can't really learn it properly. Others are learning these formulas word-by-word, and get good grades, since they can write exactly the same to the test, but this is not an option for me. I am a curious person, I can learn interesting things, but I can't learn just text. My brain is for storing toughts, not strings. There are proofs for the theories, but they are also really hard to understand because of this, and in most of the cases they are omitted. What is the reason for this? I don't understand why is it a good idea to show the really high level of abstraction and then leave the practical connections (or some important ideas / practical motivations) out?

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  • Where have I been for the last month?

    - by MarkPearl
    So, I have been pretty quiet for the last month or so. True, it has been holiday time and I went to Cape Town for a stunning week of sunshine and blue skies, but the second I got back home I spent the remainder of my holiday on my pc viewing tutorials on www.tekpub.com Craig Shoemaker, who I got in contact with because of his podcast, sent me a 1 month free subscription to the site and it has been really appreciated. I have done a lot of WPF programming in the past, but not any asp.net stuff and so I used the time to get a peek at asp.net mvc2 as well as a bunch of other technologies. I just wished I had more spare time to do the rest of the videos. While I didn’t understand all of what was being shown on the asp.net stuff (it required previous asp.net expertise), the site was a really good jump start to someone wanting to learn a new technology and broaden the horizons and I would highly recommend it, My only gripe is that in South Africa we have limited bandwidth and bandwidth speeds and so I spent a lot of my monthly bandwidth on the site and had to top up with my ISP several times because of the high quality video captures that the site did. I would have preferred to download the video’s, but apparently that is only available to people who have the yearly subscription fee. Other than that, great site and thanks a ton Craig!

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  • Creating new games on Android and/or iPhone

    - by James Clifton
    I have a succesfull facebook poker game that is running very nicely, now some people have asked if I can port this to other platforms - mainly mobile devices (and I have been asked to make a tablet version, do I really need a seperate version?) I am currently a PHP programmer (and game designer) and I simply dont' have the time to learn Android and other languages - so I have decided to pay third parties to program them (if viable). The information I need to know is what programming language is needed for the following four devices - Android mobile phone, iPhone, iPad and tablets? Can they all run off a central sql database? If they can't then i'm not interested :( Do any of these run FLASH? Have I covered all my main bases here? For example if a person programs for a ANDROID mobile phone is that to much differant to an ANDROID tablet? They will have slightly differant graphics (because the tablet has a greater screen area might as well use it) but do they need to be started from scratch? Same goes for iPhone/iPad, do they really need to be programmed differantly if the only differance is the graphics?

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  • CoffeeScript - inability to support progressive adoption

    - by Renso
    First if, what is CoffeeScript?Web definitionsCoffeeScript is a programming language that compiles statement-by-statement to JavaScript. The language adds syntactic sugar inspired by Ruby and Python to enhance JavaScript's brevity and readability, as well as adding more sophisticated features like array comprehension and pattern matching.The issue with CoffeeScript is that it eliminates any progressive adoption. It is a purist approach, kind of like the Amish, if you're not borne Amish, tough luck. So for folks with thousands of lines of JavaScript code will have a tough time to convert it to CoffeeScript. You can use the js2coffee API to convert the JavaScript file to CoffeeScript but in my experience that had trouble converting the files. It would convert the file to CoffeeScript without any complaints, but then when trying to generate the CoffeeScript file got errors with guess what: INDENTATION!Tried to convince the CoffeeScript community on github but got lots of push-back to progressive adoption with comments like "stupid", "crap", "child's comportment", "it's like Ruby, Python", "legacy code" etc. As a matter of interest one of the first comments were that the code needs to be re-designed before converted to CoffeeScript. Well I rest my case then :-)So far the community on github has been very reluctant to even consider introducing some way to define code-blocks, obviously curly braces is not an option as they use it for json object definitions. They also have no consideration for a progressive adoption where some, if not all, JavaScript syntax will be allowed which means all of us in the real world that have thousands of lines of JavaScript will have a real issue converting it over. Worst, I for one lack the confidence that tools like js2coffee will provide the correct indentation that will determine the flow of control in your code!!! Actually it is hard for me to find enough justification for using spaces or tabs to control the flow of code. It is no wonder that C#, C, C++, Java, all enterprise-scale frameworks still use curly braces. Have never seen an enterprise app built with Ruby or PhP.Let me know what your concerns are with CoffeeScript and how you dealt with large scale JavaScript conversions to CoffeeScript.

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  • Question regarding Readability vs Processing Time

    - by Jordy
    I am creating a flowchart for a program with multiple sequential steps. Every step should be performed if the previous step is succesful. I use a c-based programming language so the lay-out would be something like this: METHOD 1: if(step_one_succeeded()) { if(step_two_succeeded()) { if(step_three_succeeded()) { //etc. etc. } } } If my program would have 15+ steps, the resulting code would be terribly unfriendly to read. So I changed my design and implemented a global errorcode that I keep passing by reference, make everything more readable. The resulting code would be something like this: METHOD 2: int _no_error = 0; step_one(_no_error); if(_no_error == 0) step_two(_no_error); if(_no_error == 0) step_three(_no_error); if(_no_error == 0) step_two(_no_error); The cyclomatic complexibility stays the same. Now let's say there are N number of steps. And let's assume that checking a condition is 1 clock long and performing a step doesn't take up time. The processing speed of Method1 can be anywhere between 1 and N. The processing speed of Method2 however is always equal to N-1. So Method1 will be faster most of the time. Which brings me to my question, is it bad practice to sacrifice time in order to make the code more readable? And why (not)?

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  • How should I create a mutable, varied jtree with arbitrary/generic category nodes?

    - by Pureferret
    Please note: I don't want coding help here, I'm on Programmers for a reason. I want to improve my program planning/writing skills not (just) my understanding of Java. I'm trying to figure out how to make a tree which has an arbitrary category system, based on the skills listed for this LARP game here. My previous attempt had a bool for whether a skill was also a category. Trying to code around that was messy. Drawing out my tree I noticed that only my 'leaves' were skills and I'd labeled the others as categories. Explanation of tree: The Tree is 'born' with a set of hard coded highest level categories (Weapons, Physical and Mental, Medical etc.). Fro mthis the user needs to be able to add a skill. Ultimately they want to add 'One-handed Sword Specialisation' for instance. To do so you'd ideally click 'add' with Weapons selected and then select One-handed from a combobox, then click add again and enter a name in a text field. Then click add again to add a 'level' or 'tier' first proficiency, then specialisation. Of course if you want to buy a different skill it's completely different, which is what I'm having trouble getting my head around let alone programming in. What is a good system for describing this sort of tree in code? All the other JTree examples I've seen have some predictable pattern, and I don't want to have to code this all in 'literals'. Should I be using abstract classes? Interfaces? How can I make this sort of cluster of objects extensible when I add in other skills not listed above that behave differently? If there is not a good system to use, if there a good process for working out how to do this sort of thing?

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  • CodePlex Daily Summary for Sunday, June 26, 2011

    CodePlex Daily Summary for Sunday, June 26, 2011Popular ReleasesDroid Builder: Droid Builder - 1.0.4194.38898: Support new type of patch package. Support plugin framework.Mosaic Project: Mosaic Alpha build 254: - Added horizontal scroll by mouse in fullscreen mode - Widgets now have fixed size - Reduced spacing between widgets - Widgets menu is scrollable by mouse now and not overlapping back button on small screens.Net Image Processor: v1.0: Initial release of the library containing the core architecture and two filters. To install, extract the library to somewhere sensible then reference as a file from your project in Visual Studio.Usage Agent: Usage Agent 9.0.8: Latest release. Changes include: - Fixes for Optus - Usage Delta statistic for BigPond - Eliminated the need for UAC prompt at every startupjQuery List DragSort: jQuery List DragSort 0.4.3: Fix item not dropping correctly on Chrome and jQuery 1.6KinectNUI: Jun 25 Alpha Release: Initial public version. No installer needed, just run the EXE.TerrariViewer: TerrariViewer v3.3 [v1.0.5 Compatible]: I have added support for all the new items in Terraria v1.0.5. I have also added the ability to put your character in hardcore mode or take them out via a simple checkbox on the stats tab. If you come across any bugs, please let me know immediately.Media Companion: MC 3.409b-1 Weekly: This weeks release is part way through a major rewrite of the TVShow code. This means that a few TV related features & functions are not fully operational at the moment. The reason for this release is so that people can see if their particular issue has been fixed during the week. Some issues may not be able to be fully checked due to the ongoing TV code refactoring. So, I would strongly suggest that you put this version into a separate folder, copy your settings folder across & test MC that...Terraria World Viewer: Version 1.5: Update June 24th Made compatible with the new tiles found in Terraria 1.0.5Kinect Earth Move: KinectEarthMove sample code: Sample code releasedThis is a sample code for Kinect for Windows SDK beta, which was demonstrated on Channel 9 Kinect for Windows SKD beta launch event on June 17 2011. Using color image and skeleton data from Kinect and user in front of Kinect can manipulate the earth between his/her hands.NetOffice - The easiest way to use Office in .NET: NetOffice Release 0.9b: Changes: - fix critical issue 262334 (AccessViolationException while using events in a COMAddin) - remove x64 Assemblies (not necessary) Includes: - Runtime Binaries and Source Code for .NET Framework:......v2.0, v3.0, v3.5, v4.0 - Tutorials in C# and VB.Net:..............................................................COM Proxy Management, Events, etc. - Examples in C# and VB.Net:............................................................Excel, Word, Outlook, PowerPoint, Access - COMAddi...MiniTwitter: 1.70: MiniTwitter 1.70 ???? ?? ????? xAuth ?? OAuth ??????? 1.70 ??????????????????????????。 ???????????????? Twitter ? Web ??????????、PIN ????????????????????。??????????????????、???????????????????????????。Total Commander SkyDrive File System Plugin (.wfx): Total Commander SkyDrive File System Plugin 0.8.7b: Total Commander SkyDrive File System Plugin version 0.8.7b. Bug fixes: - BROKEN PLUGIN by upgrading SkyDriveServiceClient version 2.0.1b. Please do not forget to express your opinion of the plugin by rating it! Donate (EUR)SkyDrive .Net API Client: SkyDrive .Net API Client 2.0.1b (RELOADED): SkyDrive .Net API Client assembly has been RELOADED in version 2.0.1b as a REAL API. It supports the followings: - Creating root and sub folders - Uploading and downloading files - Renaming and deleting folders and files Bug fixes: - BROKEN API (issue 6834) Please do not forget to express your opinion of the assembly by rating it! Donate (EUR)Mini SQL Query: Mini SQL Query v1.0.0.59794: This release includes the following enhancements: Added a Most Recently Used file list Added Row counts to the query (per tab) and table view windows Added the Command Timeout option, only valid for MSSQL for now - see options If you have no idea what this thing is make sure you check out http://pksoftware.net/MiniSqlQuery/Help/MiniSqlQueryQuickStart.docx for an introduction. PK :-]HydroDesktop - CUAHSI Hydrologic Information System Desktop Application: 1.2.591 Beta Release: 1.2.591 Beta Releasepatterns & practices: Project Silk: Project Silk Community Drop 12 - June 22, 2011: Changes from previous drop: Minor code changes. New "Introduction" chapter. New "Modularity" chapter. Updated "Architecture" chapter. Updated "Server-Side Implementation" chapter. Updated "Client Data Management and Caching" chapter. Guidance Chapters Ready for Review The Word documents for the chapters are included with the source code in addition to the CHM to help you provide feedback. The PDF is provided as a separate download for your convenience. Installation Overview To ins...DropBox Linker: DropBox Linker 1.3: Added "Get links..." dialog, that provides selective public files links copying Get links link added to tray menu as the default option Fixed URL encoding .NET Framework 4.0 Client Profile requiredDotNetNuke® Community Edition: 06.00.00 Beta: Beta 1 (Build 2300) includes many important enhancements to the user experience. The control panel has been updated for easier access to the most important features and additional forms have been adapted to the new pattern. This release also includes many bug fixes that make it more stable than previous CTP releases. Beta ForumsBlogEngine.NET: BlogEngine.NET 2.5 RC: BlogEngine.NET Hosting - Click Here! 3 Months FREE – BlogEngine.NET Hosting – Click Here! This is a Release Candidate version for BlogEngine.NET 2.5. The most current, stable version of BlogEngine.NET is version 2.0. Find out more about the BlogEngine.NET 2.5 RC here. If you want to extend or modify BlogEngine.NET, you should download the source code. To get started, be sure to check out our installation documentation. If you are upgrading from a previous version, please take a look at ...New Projects6_6_6_w_m_s_open: jwervxsdfcfcf: cfcfChairforce hackathon project: project for hackathonDot Net Nuke Ajax Modules: This is a small collection of modules I think on once in a while which intend to improve a little dnn's user experience.Gnosis Game Engine: A simple game engine for the XNA 4.0 frame work that I am working on, mostly as a learning experience. I found that XNA game engines either require you to pay or are XNA 4.0 incompatible, and so this is my solution to that problem.KA_WindowsPhone7_Samples: Sample Code for Windows Phone 7 from http://kevinashley.comKinect MIDI Controller: This tool allows you to use a Kinect Sensor as a MIDI Controller for your Digital Audio Workbench. The tool is written in C#, and uses Microsoft Kinect SDK. Mosaic Project: Mosaic is an application that brings Metro UI to your desktop by live widgets.Movie Gate: A movie database that is also able to play the movies with your favorit media player.Musical Collective: An open-source web service that enables Musicians to collaborate on songs. Written in ASP.NET MVC (C#).NcADS-MVC: Clasificados MVCPokeTD: Ein kleines 2D Pokemon Tower-Defense Spiel. Es ist in C# und XNA geschrieben.PRO-TOKOL: PRO-TOKOL Server is a Programmable Logic Controller communication driver. The project is 100% coded in .NET Managed code. So, the dll can be included in any .NET project. The project uses the Microsoft Workflow Foundation to implement the DF1 Receiver and Transmitter logic.ShumaDaf: small project for display movies info directly from file structure using mymovies.xml. program create one simple xml file and display it!Silverlight Policy Service: The windows service act as a server and listens on TCP port 943 using IPv4 and IPv6. The socket policy included in the project allows all silverlight client applications to connect to TCP ports 4502-4506.SkinObject Module Wrapper: The SkinObject Module Wrapper is a DotNetNuke module that will allow you to add any DNN SkinObject to a page dinamically as if it was a DNN Module. Without any skin modification you can now inject new SkinObjects to you pages, configure the properties and change them on the fly.SkyNet0.3: Program that one should not be able to close.Team Zero Game One: SVN for the personal project(s) of Team Zero - Game One. We are creating a free game in HTML5 canvas using the CAKE api, found here: http://code.google.com/p/cakejs/ The game is about programming a small robot to move through a maze, sneaking past guards and other obstacles, using event-based programming. We've seen a number of games that allow you to "program" a character, and thought it would be interesting to do a different take on it. The game is still in early production, and actively ...Test-Driven Scaffolding (TDS): TDS helps developers of C# function members (methods, indexers, etc.) to quickly write drivers for code under development; these can easily be converted later to NUnit tests. TDS consists of C# code that can be pasted into a new or existing project and removed when no longer needed.Usage Agent: The Usage Agent toolset is designed to help manage your ISP data usage without having to log into your ISP usage page. It can optionally monitor your network card throughput and produce reports on usage. Developed in VB.NET.

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  • How to stay creative when going through tough emotional times (divorce, family death, etc)? [closed]

    - by gaearon
    Hi everyone. I believe this is not a duplicate of motivation question because I want to especially emphasize the emotional breakdown. You may conquer lack of motivation by working harder and getting through the dip, however this was not the case when I was separating with my girlfriend. I actually liked the project, it was (and it still is!) my first programming job at an amazing workplace and I wasn't being pressured in any way but I found myself absolutely unable to code, blankly staring at the screen, my thoughts disorganized, the feeling of emptiness all in my chest. I could perform some straightforward coding but anything that involves creative thinking, designing abstractions, solving new problems and, worst of all, fixing bugs in legacy code, completely wiped out my brain to the point I started avoiding work, which I never have done before. Coffee only used to make it worse. Eventually I got over that, and I remember the happy day I solved a problem elegantly and thought—hell, first time in a month! Thankfully the project wasn't top priority and I had the time to catch up. I wonder now, was there any other way to boost my productivity back then? I bet people would say I should've taken a break—and I think I really should have—but what if I needed the money? Didn't want to lose my job? Are there any ways to trick your brain into being creative despite emotional losses? From your experience, would it be worth talking to my boss, collegues?

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  • Are there legitimate reasons for returning exception objects instead of throwing them?

    - by stakx
    This question is intended to apply to any OO programming language that supports exception handling; I am using C# for illustrative purposes only. Exceptions are usually intended to be raised when an problem arises that the code cannot immediately handle, and then to be caught in a catch clause in a different location (usually an outer stack frame). Q: Are there any legitimate situations where exceptions are not thrown and caught, but simply returned from a method and then passed around as error objects? This question came up for me because .NET 4's System.IObserver<T>.OnError method suggests just that: exceptions being passed around as error objects. Let's look at another scenario, validation. Let's say I am following conventional wisdom, and that I am therefore distinguishing between an error object type IValidationError and a separate exception type ValidationException that is used to report unexpected errors: partial interface IValidationError { } abstract partial class ValidationException : System.Exception { public abstract IValidationError[] ValidationErrors { get; } } (The System.Component.DataAnnotations namespace does something quite similar.) These types could be employed as follows: partial interface IFoo { } // an immutable type partial interface IFooBuilder // mutable counterpart to prepare instances of above type { bool IsValid(out IValidationError[] validationErrors); // true if no validation error occurs IFoo Build(); // throws ValidationException if !IsValid(…) } Now I am wondering, could I not simplify the above to this: partial class ValidationError : System.Exception { } // = IValidationError + ValidationException partial interface IFoo { } // (unchanged) partial interface IFooBuilder { bool IsValid(out ValidationError[] validationErrors); IFoo Build(); // may throw ValidationError or sth. like AggregateException<ValidationError> } Q: What are the advantages and disadvantages of these two differing approaches?

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  • Is error suppression acceptable in role of logic mechanism?

    - by Rarst
    This came up in code review at work in context of PHP and @ operator. However I want to try keep this in more generic form, since few question about it I found on SO got bogged down in technical specifics. Accessing array field, which is not set, results in error message and is commonly handled by following logic (pseudo code): if field value is set output field value Code in question was doing it like: start ignoring errors output field value stop ignoring errors The reasoning for latter was that it's more compact and readable code in this specific case. I feel that those benefits do not justify misuse (IMO) of language mechanics. Is such code is being "clever" in a bad way? Is discarding possible error (for any reason) acceptable practice over explicitly handling it (even if that leads to more extensive and/or intensive code)? Is it acceptable for programming operators to cross boundaries of intended use (like in this case using error handling for controlling output)? Edit I wanted to keep it more generic, but specific code being discussed was like this: if ( isset($array['field']) ) { echo '<li>' . $array['field'] . '</li>'; } vs the following example: echo '<li>' . @$array['field'] . '</li>';

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  • Engine for 2D Top-Down Physics-Based Skeletal Animation

    - by RylandAlmanza
    I just watched at the Sui Generis video, and was completely amazed. Specifically, the part where the big troll thing is beating up the player with his flail. This got me really excited, and I would like to try implementing something like this in a 2D Top-Down format. Something like this. That atloria example seems simple enough, but it's not exactly what I'm looking to make. I think atloria is using predefined animations, where as I would like to make something more physics-based like the Sui Generis engine does. So, I'm wondering what physics engines might work for something like this, and if I'd need to implement my own skeletal system, or if I could just use "joints" and such from the engine. The only experience I have in terms of physics engines is Box2D, which I've heard shouldn't be used for top-down settings, and I can think of a few reasons it wouldn't work out well. One of those reasons being gravity. In box 2D, gravity pulls towards a side of the screen (usually the bottom.) I wouldn't want my player's forearms constantly being pulled to one side. :) Also should mention that the programming language doesn't matter all that much to me. I'm currently playing with HTML5 stuff, though. :) Thanks in advance!

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  • Opengl + SDL linking error

    - by me2loveit2
    I am trying to load an image as a texture with opengl using c++ in visual studio 2010. I researched a couple hours online and found the SDL library, then I implemented a simple example and got some linking error I can not seem to figure out. The error log is here: 1Build started 10/20/2012 12:09:17 AM. 1InitializeBuildStatus: 1 Touching "Debug\texture mapping test.unsuccessfulbuild". 1ClCompile: 1 All outputs are up-to-date. 1 texture mapping test.cpp 1ManifestResourceCompile: 1 All outputs are up-to-date. 1texture mapping test.obj : error LNK2019: unresolved external symbol _IMG_Load referenced in function "void __cdecl display(void)" (?display@@YAXXZ) 1MSVCRTD.lib(crtexe.obj) : error LNK2019: unresolved external symbol main referenced in function __tmainCRTStartup 1C:\Users\Me\Documents\Visual Studio 2010\Projects\Programming projects\texture mapping test\Debug\texture mapping test.exe : fatal error LNK1120: 2 unresolved externals 1 1Build FAILED. 1 1Time Elapsed 00:00:02.45 ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== Can someone please help me!! I am at a desperate point right now. I downloaded the SDL, and copied all the .h file into: C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Include I added the .lib (x86) files into://as a not i tried the (x64) file too but got the exact same error C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Lib and the .dll(x86) into: C:\Windows\System32 For implementing textures, I used the simple sample code from: http://www.sdltutorials.com/sdl-tip-sdl-surface-to-opengl-texture Please let me know if you can see me doing something wrong, or know how I can fix this!! Thanks Phil

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  • The 2012 JAX Innovation Awards

    - by Janice J. Heiss
    A new article, now up on otn/java, titled “The 2012 JAX Innovation Awards” reports on  important Java developments celebrated by the Awards, which were announced in July of 2012. The Awards, given by S&S Media Group, aim to, "Reward those technologies, companies, organizations and individuals that make outstanding contributions to Java." The Awards fall into three categories: Most Innovative Java Technology, Most Innovative Java Company, and Top Java Ambassador. In addition, a finalist who did not win an award receives a Special Jury prize, "in acknowledgement of their unique contribution and positive impact on the Java ecosystem."The winners were: JetBrains for Most Innovative Java Company; Adam Bien as Top Java Ambassador; Restructure 101, created by Headway Software, as Most Innovative Technology; and Charles Nutter, Special Jury award. Each winner received a $2,500 prize. The five finalists in each category were invited to attend the JAX Conference in San Francisco, California. This year's winners each received a $2,500 prize. JetBrains Fellow, Ann Oreshnikova, listed her favorite JetBrains innovations: * Nullability annotations and nullability checker* CamelCase navigation and completion* Continuous Integration in grid (on multiple agents), in TeamCity* IntelliJ Platform and its language support framework* MPS language workbench* Kotlin programming languageWhen asked what currently excites him about Java, Adam Bien, winner of the Java Ambassador Award, expressed enthusiasm over the increasing interest of smaller companies and startups for Java EE. “This is a very good sign,” he said. “Only a few years ago J2EE was mostly used by larger companies -- now it becomes interesting even for one-person shows. Enterprise Java events are also extremely popular. On the Java SE side, I'm really excited about Project Nashorn.”Special Jury Prize Winner, Charles Nutter of Red Hat, remarked that, “JRuby seems to have hit a tipping point this past year, moving from ‘just another Ruby implementation’ to ‘the best Ruby implementation for X,’ where X may be performance, scaling, big data, stability, reliability, security, and a number of other features important for today's applications. Check out the complete article here.

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  • The last word on C++ AMP...

    - by Daniel Moth
    Well, not the last word, but the last blog post I plan to do here on that topic. Over the last 12 months, I have published 45 blog posts related to C++ AMP on the Parallel Programming in Native Code, and the rest of the team has published even more. Occasionally I'll link to some of them from my own blog here, but today I decided to stop doing that - so if you relied on my personal blog pointing you to C++ AMP content, it is time you subscribed to the msdn blog. I will continue to blog about other topics here of course, so stay tuned. So, for the last time, I encourage you to read the latest two blog posts I published on the team blog bringing together essential reading material on C++ AMP Learn C++ AMP - a collection of links to take you from zero to hero. Present on C++ AMP - a walkthrough on how to give a presentation including slides. Got questions on C++ AMP? Hit the msdn forum! Comments about this post by Daniel Moth welcome at the original blog.

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  • Physics-perfect (or somewhere near) 3d sound engine

    - by passcod
    I'm new to game programming, although I have some years of experience in console/web development. My problem is not so much that I can't find what I'm looking for, it's just that I don't have the terminology to actually perform a successful search. I am looking for a physics engine which has great focus on sounds. In fact, I do not care at all for anything else. What I mean is better explained by an example: Suppose a 1st person type game. You are facing North, and someone somewhere around you throws a flute at you (nevermind the absurdity of the situation). The flute spins while it is on its way, making sounds through its holes. There is a wind of say, 5 knots South. I imagine a physics engine will be capable of calculating the trajectory of the flute, as well as the direction it takes after it hits. What I want is for the physics engine to calculate the precise sounds it will make, from any listener's perspective. Does any such engine exists? If there are several, which one would be best for the example above?

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  • Removing ocurrances of characters in a string

    - by DmainEvent
    I am reading this book, programming Interviews exposed by John Wiley and sons and in chapter 6 they are discussing removing all instances of characters in a src string using a removal string... so removeChars(string str, string remove) In there writeup they sey the steps to accomplish this are to have a boolean lookup array with all values initially set to false, then loop through each character in remove setting the corresponding value in the lookup array to true (note: this could also be a hash if the possible character set where huge like Unicode-16 or something like that or if str and remove are both relatively small... < 100 characters I suppose). You then iterate through the str with a source and destination index, copying each character only if its corresponding value in the lookup array is false... Which makes sense... I don't understand the code that they use however... They have for(src = 0; src < len; ++src){ flags[r[src]] == true; } which is turning the flag value at the remove string indexed at src to true... so if you start out with PLEASE HELP as your str and LEA as your remove you will be setting in your flag table at 0,1,2... t|t|t but after that you will get an out of bounds exception because r doesn't have have anything greater than 2 in it... even using there example you get an out of bounds exception... Am is there code example unworkable?

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  • If your algorithm is correct, does it matter how long it took you to write it?

    - by John Isaacks
    I recently found out that Facebook had a programming challenge that if completed correctly you automatically get a phone interview. There is a sample challenge that asks you to write an algorithm that can solve a Tower of Hanoi type problem. Given a number of pegs and discs, an initial and final configuration; Your algorithm must determine the fewest steps possible to get to the final configuration and output the steps. This sample challenge gives you a 45 minute time limit but allows you to still test your code to see if it passes once your time limit expires. I did not know of any cute math solution that could solve it, and I didn't want to look for one since I think that would be cheating. So I tried to solve the challenge the best I could on my own. I was able to make an algorithm that worked and passed. However, it took me over 4 hours to make, much longer than the 45 minute requirement. Since it took me so much longer than the allotted time, I have not attempted the actual challenge. This got me wondering though, in reality does it really matter that it took me that long? I mean is this a sign that I will not be able to get a job at a place like this (not just Facebook, but Google, Fog Creek, etc.) and need to lower my aspirations, or does the fact that I actually passed on my first attempt even though it took too long be taken as good?

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  • Adding root bone in 3DS Max?

    - by carlturtle
    my animation artist has made me a nice first person pair of arms, animated it, textured it, and given it to me. Then he went on vacation. I am programming my animations, and I am trying to test the model he has given me. Building my project gives me a warning: Multiple skeletons were found in the file. The first skeleton, named "frame l upperarm" has been moved to be a child of the scene root. The other, "frame r upperarm", will be ignored. Fragment identifier "frame r upperarm". Then an error: "Vertex is bound to bone "frame l forearm", but this bone is not present in the skeleton." I realize this means that there are two skeletons, as said in this problem: Importing 3d model with multiple skeletons I have 3DS Max, but I have no idea how to use it, and Google/CGTalk/Plycount turn up nothing relevant on how to add a root bone or combine skeletons. If anyone knows how, it would help me out greatly. Thanks.

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  • Beginners guide to developing optimization software

    - by Florenc
    I am novice in "serious" programming i.e. applications that deal with real-life applications and software projects that go beyond school assignments. My interests include optimization, operations research, algorithms and lately i discovered how much I do like software design/development/engineering. I have already developed some simple desktop applications for some "famous" problems like TSP using heuristc approaches, a VRP solver (in progress) and so on. While developing this kind of software I actually used basic concepts taught at school such as object-orientation analysis and design. But, I found these courses rather elementary and quite boring (for my expectations). So I decided to go a little further and start developing "real" software (and this is where I realized how important and interesting software engineering/design is.) Now, here's my issue: I can not find a "study guide" for developing software of this kind. Currently, there are numerous resources out there (books, websites, tutorials) in designing and developing complex IS, web applications, smartphone apps but I can't find a book for example entitled "optimization software development". Definetly, someone could claim that "design patterns apply to software in general" but that's not my point. My point is that I could simply use my imagination for "simple" implementations, but what happens, when my imagination can not go further? In other words I'm looking for a guide/path to bridge the gap between: Mathematics-Algorithm Design-Software Engineering-Optimization-Software development

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  • Assuming "clean code/architecture" is there a difference in "effort" between PHP or Java/J2EE web application development?

    - by PhD
    A client asked us to estimate effort when selecting PHP as the implementation language for his next web-based application. We spent about a week exploring PHP, prototyping, testing etc., We are quite new to this language - may have hacked around it in the past but, let's go with PHP-noobs but application development experts (for the lack of a better, less flattering word :) It seems, that if we write, clean maintainable code, follow separation of concerns, enterprise architecture patters (DAOs etc.) the 'effort' in creating an object-oriented PHP based web-application seems to be the same for a Java based one. Here's our equation for estimating the effort (development/delivery time): ConstructionEffort = f(analysis, design, coding, testing, review, deployment) We were specifically comparing effort estimates in creating an enterprise application with the following: PHP + CakePHP/CodeIgniter (should we have considered others?) Java + Spring + Restlet It's an end-to-end application: Client: Javascript/jQuery + HTML/CSS Middle tier/Business Logic - (Still evaluating PHP/Java) Database: MySQL The effort estimates of the 1st and 3rd tier are constant and relatively independent of the middle tier's technology. At a high level with an initial breakdown into user stories of the requested features as well as a high-level SWAG on the sheer number of classes/SLOC that would be required for PHP doesn't seem to differ by much from what is required of the same in Java. Is this correct? We are basing our initial estimates on the initial prototyping/coding we've done with PHP - we are currently disregarding fluency with the language as a factor, since that'll be an initial hurdle and not a long term impediment IMHO (we also have sufficient time to become quite fluent with PHP). I'm interested in knowing the programmers' perspective with respect to effort when creating similar applications with either of the languages to justify choosing one over the other. Are we missing something here? It seems we are going against popular belief of PHP being quicker to market (or we being very fluent with Java have our vision clouded). It doesn't seem to have any coding/programming effort saving from what we/ve played around with.

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