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• Is there an algorithm for determining how much daylight there is?

  - by Pharaun

  Is there a function/algorithm that allows me to input the latitude and the approximate orbital position of the earth in so that I can determine how long the sun is up? IE during the winter it would show that the sun is only up a few hours in the far north hemisphere. I did some basic Google search and didn't find much so I was thinking that I might have to do some trigonometry that would allow me to calculate how much the earth is inclined or not toward the sun then use that information along with the latitude to figure out how much sunshine a site would be getting.

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• SpaceX’s Falcon 9 Launch Success And Reusable Rockets Test Partially Successful

  - by Gopinath

  Elon Musk’s SpaceX is closing on the dream of developing reusable rockets and likely in an year or two space launch rockets will be reusable just like flights, ships and cars. Today SpaceX launched an upgraded Falcon 9 rocket in to space to deliver satellites as well as to test their reusable rocket launching technology. All on board satellites were released on to the orbit and the first stage of rocket partially succeeded in returning back to Earth. This is a huge leap in space technology.   Couple of years ago reusable rockets were considered as impossible. NASA, Russian Space Agency, China, India or for that matter any other space agency never even attempted to build reusable rockets. But SpaceX’s revolutionary technology partially succeeded in doing the impossible! Elon Musk founded SpaceX with the goal of building reusable rockets and transporting humans to & from other planets like Mars. He says If one can figure out how to effectively reuse rockets just like airplanes, the cost of access to space will be reduced by as much as a factor of a hundred.  A fully reusable vehicle has never been done before. That really is the fundamental breakthrough needed to revolutionize access to space. Normally the first stage of a rocket falls back to Earth after burning out and is destroyed. But today SpaceX reignited first stage rocket after its separation and attempted to descend smoothly on to ocean’s surface. Though it did not fully succeed, the test was partially successful and SpaceX was able to recovers portions of first stage. Rocket booster relit twice (supersonic retro & landing), but spun up due to aero torque, so fuel centrifuged & we flamed out — Elon Musk (@elonmusk) September 29, 2013 With the partial success of recovering first stage, SpaceX gathered huge amount of information and experience it can use to improve Falcon 9 and build a fully reusable rocket. In post launch press conference Musk said if things go "super well", could refly a Falcon 9 1st stage by the end of next year. Falcon 9 Launch Video Next reusable first tests delayed by at least two launches SpaceX has a busy schedule for next several months with more than 50 missions scheduled using the new Falcon 9 rocket. Ten of those missions are to fly cargo to the International Space Shuttle for NASA.  SpaceX announced that they will not attempt to recover the first stage of Falcon 9 in next two missions. The next test will be conducted on  the fourth mission of Falcon 9 which is planned to carry cargo to Internation Space Station sometime next year. This will give time required for SpaceX to analyze the information gathered from today’s mission and improve first stage reentry systems. More reading Here are few interesting sources to read more about today’s SpaceX launch SpaceX post mission press conference details and discussion on Reddit Giant Leaps for Space Firms Orbital, SpaceX Hacker News community discussion on SpaceX launch SpaceX Launches Next-Generation Private Falcon 9 Rocket on Big Test Flight

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• Manage Your Favorite Social Accounts in Chrome and Iron with Seesmic

  - by Asian Angel

  Are you looking for a way to manage your Twitter, Facebook, Google Buzz, LinkedIn, and Foursquare accounts all in one place? Using the Seesmic Web App for Chrome and Iron you can access your favorite accounts and manage them in a single, simple-to-use interface. A feature that we loved from the start was the ability to access Twitter without creating a special Seesmic account. And in these days of multiple accounts who needs another one to complicate things up? All that you need to do is to sign in with your user name/e-mail along with your password. You do have to authorize access for Seesmic to connect with your account but the whole process (login & authorization) is handled in a single window instance. Now on to a quick look at some of the UI features… The sidebar allows you to add additional columns to the main interface, set your favorite location for Trends, and tie in additional social services as desired. You can also access additional options and controls in the upper right corner. When you are ready to start tweeting click in the blank at the top and enter your text, etc. in the convenient drop-down window that appears. Another nice perk is the ability to switch to a black and grey theme if the white is too bright for your needs. The Seesmic web app provides a simple-to-use, highly efficient way to manage your Twitter account and other favorite social services in a single tab interface. Seesmic [Chrome Web Store] Latest Features How-To Geek ETC Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) Manage Your Favorite Social Accounts in Chrome and Iron with Seesmic E.T. II – Extinction [Fake Movie Sequel Video] Remastered King’s Quest Games Offer Classic Gaming on Modern Machines Compare Your Internet Cost and Speed to Global Averages [Infographic] Orbital Battle for Terra Wallpaper WizMouse Enables Mouse Over Scrolling on Any Window

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• Best Way to Archive Digital Photos and Avoid Duplicate File Names

  - by user31575

  This problem pertains to archiving of digital pictures taken from multiple cameras. Answers here covered the general topic of the-mechanics-of-backups: How do you archive digital photos and videos ? I however face another problem. Having multiple cameras (canon) and multiple SD cards (mixed and matched at random), I have found that different SD cards have different photos with the same file name, i.e. two different photos each name IMG_3141.JPG. Additionally, for better or worse, I've backed up the files to multiple places and need to consolidate my backups. I want to eliminate duplicates, but not clobber files. The only way I can think of is to append the code (md5 or sha1) to the file name, i.e. IMG_3141.JPG becomes IMG_3141_KT229QZ31415926ASDF.JPG, then sorting them out Any better ways? (Note "open letter" address the 'duplicate file name' concern): http://photofocus.com/2010/09/13/an-open-letter-to-digital-camera-manufacturers-regarding-camera-file-naming/ )

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• Experience with AMCC 3ware 9650se raid cards? Ours seems dead

  - by antiduh

  We have a 8-port 3ware 9650se raid card for our main disk array. We had to bring the server down for a pending power outage, and when we turned the machine back on, the raid card never started. This card has been in service for a couple years without problems, and was working up until the shutdown. Now, when we turn the machine on, the bios option rom that normally kicks in before the bootloader doesn't show up, none of the drives start, and when the OS tries to access the device, it just times out. The firmware on it has been upgraded in the past, so it's possible we've hit some sort of firmware bug. We're using it in a Silicon Mechanics R272 machine with gentoo for the OS. The OS eventually boots, but alas, without the card. We've ordered a new one, but I'm worried that if we replace the card it won't recognize the existing array. Has anybody performed a card swap before? Any help would be greatly appreciated.

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• Likeliness of obtaining same IP address after restarting a router

  - by ?affael

  My actual objective is to simulate logged IPs of web-site users who are all assumed to use dynamically assigned IPs. There will be two kinds of users: good users who only change IP when the ISP assignes a new one bad users who will restart their router to obtain a new IP So what I would like to understand is what assignment mechanics are usually at work here deciding from what pool of IPs one is chosen and whether the probability is uniformly distributed. I know there is no definite and global answer as this process can be adjusted be the ISP but maybe there is something like a technological frame and common process that allows some plausible assumptions. UPDATE: A bad user will restart the router as often as possible if necessary. So here the central question is how many IP changes on average are necessary to end up with a previously used IP.

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• Requiring mulitple group membership in order to access folder

  - by David

  How would I go about creating a file or folder that requires a user to be a member of two or more different groups in order to read/write to the folder? For example, say I run an auto repair shop, and I have a folder called "Repair History" and I only want people to access it if they are members of BOTH the "Mechanics" and "Cashiers" group? This would be an AND requirment instead of an OR requirement which seems to be the norm. I know we can create a separate group that is needed to access the folder, but this is more of an academic question, since it pertains to a different security structure that we are creating. I'm not sure if MS security handles it, but I'm wondering how it would be done either way.

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• What could be wrong with my CD drive and how do you fix it?

  - by Jamie

  My CD drive hasn't worked in about 8 months. I was burning CDs in a hurry and pulled it out because it was taking too long (probably an average amount of time). Im running a laptop (Toshiba Satellite A505-6965) that uses a slot drive. Now my computer doesn't accept CDs. It used to pull them in but it doesn't anymore. Ive heard it make odd noises a few times but thats it. The slot is these spongey things and Ive managed to peek into the drive with a flashlight and theres nothing in the way, really. Could someone explain the mechanics of what happened and if it would be possible to fix it? If itd be possible to fix it through Linux that would be great since I keep getting the BSOD (0x0000007B) and am going to try reinstalling Windows 7. But I can't really do that since I don't have a USB drive larger than 2 GB (Windows is about 4 GB) so Im relying on Linux ATM.

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• Windows 7 boot order and locations

  - by Russ C

  Hi, Long story short, a program that shouldn't have been run on this machine has been, and it's created a naughty .sys file that is being loaded right after pci.sys (as determined by NBTLog.txt) I've had a look a BCDEdit, EasyBCD and a number of Registry keys but I can't seem to determine where about winstart.exe actually gets the list of sys files to load from! The sys file itself is running in high elevation and appears to be defeating all attempts to remove it; I could (probably should) make a Linux USB boot disc and use it to delete the sys file, but I'd really appreciate understanding the mechanics here. ((FWIW: the problem stemmed from a sibling running a Trainer for some game; he has been suitable chastised))

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• Book Review &ndash; Developer&rsquo;s Guide To Collections in Microsoft&reg; .NET

  - by Lori Lalonde

  Developer’s Guide To Collections in Microsoft® .NET, by Calvin Janes, discusses the various collections available in the built-in NET libraries, as well as  the advantages and disadvantages of using each type of collection. Other areas are also covered including how collections utilize memory, how to use LINQ with collections, using threading with collections, serializing collections, and how to bind collections to controls in Windows Forms, WPF and Silverlight. For developers looking for a simple reference book on collections, then this book will serve that purpose and serve it well. For those looking for a great read from cover-to-cover, they may be disappointed. This book tends to be repetitive in discussion topics, examples, and code samples in the first two parts of the book. In the first part, the author conducts walk-throughs to develop custom collections. In  the second part, the author conducts walk-throughs on using the built-in .NET collections. For experienced .NET developers, the first two parts will not provide much value. However, it is beneficial for new developers who have not worked with the built-in collections in .NET. They will obtain an understanding of the mechanics of the built-in collections and how memory is utilized when using the various types of collections. So in this aspect, new developers will get more value out of this book. The third and fourth parts delve into advanced topics, including using LINQ, threading, serialization and data binding. I find these two parts of the book are well written and flow better than the first two parts. Both beginner and experienced developers will find value in this half of the book, mainly on the topics of threading and serialization. The eBook format of this book was provided free through O'Reilly's Blogger Review program. This book can be purchased from the O'Reilly book store at: http://shop.oreilly.com/product/0790145317193.do

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• MSCC: Purpose and benefits of Version Control Systems (VCS)

  You're working in IT and not using any kind of version control system? Sorry, then you're doing something wrong! RSVP for MSCC meetup of June This month's meetup will be an introduction into the mechanics of version control systems (VCS) like git, Mercurial, TFS, and others in general. VCS are not optional but compulsory in any area of IT. Whether you're developing source code for the next buzz app, writing SQL scripts for your database, or automating your administrative tasks with shell scripts it's better to have a "time machine" in order to keep multiple version, stay organised and leverage the power of differences. git - a modern approach to VCS - Nayar Nayar is going to give us a brief overview of the basic principles of working with git. Which are the necessary steps to get started and which are the usual commands in order to get the most out of git. Visual Studio Online (VSO) - Jochen Are you mainly rooted on the Windows platform and looking for a good alternative to Team Foundation Services (TFS), then VSO might give you hand at achieving this. Similar to git VSO is an open infrastructure but plays very well together with the Microsoft Azure cloud infrastructure. Recent and upcoming events in Mauritius Let's have a chat about recent events like WebCup 2014 or Emtel Knowledge Series and have a head start on upcoming events like Code Challenge, and others to come. Networking and general discussions Of course, there will be plenty of time to chat and exchange with other like-minded craftsmen. Bring your topics and discuss various issues with other professionals. Share your experience and use the ability to learn from others. Looking forward to meet soon.

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• Autoscaling in a modern world&hellip;. Part 1

  - by Steve Loethen

  It has been a while since I have had time to sit down and blog.  I need to make sure I take the time.  It helps me to focus on technology and not let the administrivia keep me from doing the things I love. I have been focusing on the cloud for the last couple of years.  Specifically the  PaaS platform from Microsoft called Azure.  Time to dig in.. I wanted to explore Autoscaling.  Autoscaling is not native part of Azure.  The platform has the needed connection points.  You can write code that looks at the health and performance of your application components and react to needed scaling changes.  But that means you have to write all the code.  Luckily, an add on to the Enterprise Library provides a lot of code that gets you a long way to being able to autoscale without having to start from scratch. The tool set is primarily composed of a Autoscaler object that you need to host.  This object, when hosted and configured, looks at the performance criteria you specify and adjusts your application based on your needs.  Sounds perfect. I started with the a set of HOL’s that gave me a good basis to understand the mechanics.  I worked through labs 1 and 2 just to get the feel, but let’s start our saga at the end of lab3.  Lab3 end results in a web application, hosted in Azure and a console app running on premise.  The web app has a few buttons on it.  One set adds messages to a queue, another removes them.  A second set of buttons drives processor utilization to 100%.  If you want to guess, a safe bet is that the Autoscaler is configured to react to a queue that has filled up or high cpu usage.  We will continue our saga in the next post…

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• Adding a forum to an existing site

  - by Andrew Heath

  I've got a site with ~500 registered members, 300 of which are what you'd call "active". Site data is kept in a MySQL dbase. I'd like to add a myBB forum to the site, but this question applies to any forum really. What I very much want to avoid is requiring my users to register both on the site and on the forum because my userbase is not technically literate and this would confuse a lot of them. However the forum software has its own registration, login, cookie, and password management system which naturally are different from the site's mechanics. I envision the following possibilities: install myBB into the existing database and customize the login code to unify the two systems. This would probably mean changing the site's code to use the myBB system as that would likely be less painful to refactor and wouldn't hurt future myBB upgrade ability. install myBB into separate database and write a bridging script of some sort that auto-registers existing site users with the forum if they elect to participate. Also check new forum registrations against the site's username list to prevent newcomers from taking existing names. run them fully separate and force users to re-register (easiest for ME, but least desirable for them) I would like a suggested course of action from those who have trod this path before... Thank you.

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• See the Lord of the Rings Epic from the Perspective of Mordor [eBook]

  - by ETC

  Much like the wildly popular book “Wicked” mixed up the good/bad dichotomy in the Wizard of Oz, “The Last Ring-Bearer” shows us the Mordor’s take on the Lord of the Rings. The work of a Russian paleontologist, Kirill Yeskov, “The Last Ring-Bearer” frames the conflict in the Lord of the Rings from the perspective of the citizens of Mordor. Salon magazine offers this summary, as part of their larger review: In Yeskov’s retelling, the wizard Gandalf is a war-monger intent on crushing the scientific and technological initiative of Mordor and its southern allies because science “destroys the harmony of the world and dries up the souls of men!” He’s in cahoots with the elves, who aim to become “masters of the world,” and turn Middle-earth into a “bad copy” of their magical homeland across the sea. Barad-dur, also known as the Dark Tower and Sauron’s citadel, is, by contrast, described as “that amazing city of alchemists and poets, mechanics and astronomers, philosophers and physicians, the heart of the only civilization in Middle-earth to bet on rational knowledge and bravely pitch its barely adolescent technology against ancient magic.” Hit up the link below to grab a PDF of the official English translation of Yeskov’s work. The Last Ring-Bearer [via Salon] Latest Features How-To Geek ETC How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Lucky Kid Gets Playable Angry Birds Cake [Video] See the Lord of the Rings Epic from the Perspective of Mordor [eBook] Smart Taskbar Is a Thumb Friendly Android Task Launcher Comix is an Awesome Comics Archive Viewer for Linux Get the MakeUseOf eBook Guide to Speeding Up Windows for Free Need Tech Support? Call the Star Wars Help Desk! [Video Classic]

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• Open source clone for Starcraft

  - by sinekonata

  Two questions about a SC:Broodwar clone. Is there one yet? How likely is legal pursuit? Since almost all games I usually play now have an FOS alternative from alpha to way polished, I was wondering why can't I find one for SC, one of the biggest titans of the gaming community? So my first question is, is there a game that was made with the intention to emulate SC? Is it that I didn't look well enough? Could it really be that no one tackled what seems like a small effort compared to the creation of a game engine like Spring or games like Rigs of Rod or Minetest? And since SC is not being maintained at all shouldn't the incentive to see a bug free modable balanced version huge? What am I not getting here? In the event that there is none, is it a legal problem? Could it be that people expect Blizzard to release sources themselves? Or that developers don't see the point in having SC mechanics without the patented lore and aesthetics? And the trickier question, if I were to make SC an open source game, a total clone of it for the purposes of maintenance, modability, etc. Would Blizzard really sue a team of developer fans that just do them a favour knowing they don't lose any money from Korea broadcasts? Or would they do it not to set precedents. So thanks for reading all that, hope I'm not the only one to think it's weird that no one talks about it. See you.

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• How should I generate and store the boundries of a cave?

  - by Bob Roberts

  I am making a small cave copter game (seriously, where did this type of game come from anyway) and I am trying to figure out how to make and store the procedural generated walls. I am thinking about creating the walls by randomly picking two points away from the center of the screen. They will be no closer than the height of helicopter and no further than the edge of the screen, weighted to prefer to go in the same direction as the point prior so I end up with stalactites and stalagmites and not just noise, at set intervals of distance. To store, perhaps parallel arrays/lists, one for distance from center to top screen and one for distance from center to bottom. Am I way off base with my thinking? I just want the cave to be varied and challenging, I just have never worked with generating data like this. Edit: Woah, I just realized that my idea would lead to a player being able to stay in the middle of the screen and win. That isn't right at all. So the very basis of how I was going to generate is wrong. Edit 2: I also realized I left out a very crucial point. Part of the mechanics of the game will let the player go backwards therefor the data structure should be continuous.

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• Is there an open source clone of a game in the Total War Series?

  - by sinekonata

  I loved Shogun:Total War gameplay and then later on spent weeks re-enacting historical wars and battles with Europa Barbarorum. It's a mod for Rome:TW that focuses on historical accuracy in the peoples, units, sounds, visuals, everything from macro mechanics to actual battles (e.g. a lot more missiles). Since that time I kind of turned my back on Windows cause it sucks and use Linux cause Mac sucks even worse. So as I miss that game (Eur. Barb.) and consider it the most realistic RTS to date, I'd like to know if there are any free and open source alternatives to it because ever since I'm under linux, I became addicted to FOSS so I also turned my back on paying (even kickstarters) for closed source, pay to play games. I have found a clone/alternative for everyone of the best games like Minecraft, CSS, Natural Selection, TA/SupCom etc... It's kind of the last one I need. The Spring engine is amazing for example, is there another open source project of the source in current development? Or would Spring itself be enough (it certainly looks capable) to make it? Thanks in advance guys...

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• Air Canada Will No Longer Be My Airline

  - by D'Arcy Lussier

  If the constant labour disputes at Air Canada (the most recent being a week ago where pilots were locked out and mechanics and bag handlers were poised to strike) weren’t enough to make me reconsider moving all my flights to West Jet, this latest twist definitely will. CBC reported that Aveos, a privately held company that has the contract to provide maintenance for Air Canada, had suddenly and without notice shut its doors (read the story here) There’s something missing from the stories currently online though. Months ago, Air Canada gave their Winnipeg based maintenance staff an ultimatum – stay with Air Canada but be forced to relocate to a different city, or switch from Air Canada to Aveos and stay in Winnipeg. So all of those staff that Air Canada pushed into Aveos just so they could stay in Winnipeg are now out of a job with huge uncertainty around their future. Labour disputes that rise up continually and hamper personal travel and business, questionable timing of business decisions and the resulting impact on individuals…there’s too much drama in that company for me to rely on it for my travel needs. WestJet it is moving forward until Air Canada gets their act together – which probably means its WestJet for the foreseeable future. D

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• The Enterprise Side of JavaFX: Part Two

  - by Janice J. Heiss

  A new article, part of a three-part series, now up on the front page of otn/java, by Java Champion Adam Bien, titled “The Enterprise Side of JavaFX,” shows developers how to implement the LightView UI dashboard with JavaFX 2. Bien explains that “the RESTful back end of the LightView application comes with a rudimentary HTML page that is used to start/stop the monitoring service, set the snapshot interval, and activate/deactivate the GlassFish monitoring capabilities.”He explains that “the configuration view implemented in the org.lightview.view.Browser component is needed only to start or stop the monitoring process or set the monitoring interval.”Bien concludes his article with a general summary of the principles applied:“JavaFX encourages encapsulation without forcing you to build models for each visual component. With the availability of bindable properties, the boundary between the view and the model can be reduced to an expressive set of bindable properties. Wrapping JavaFX components with ordinary Java classes further reduces the complexity. Instead of dealing with low-level JavaFX mechanics all the time, you can build simple components and break down the complexity of the presentation logic into understandable pieces. CSS skinning further helps with the separation of the code that is needed for the implementation of the presentation logic and the visual appearance of the application on the screen. You can adjust significant portions of an application's look and feel directly in CSS files without touching the actual source code.”Check out the article here.

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• What are some good resources for creating a game engine in XNA?

  - by Glasser

  I'm currently a student game programmer working on an indie project. We have a team of eleven people (five programmers, four artists, and two audio designers) aboard, all working hard to help design this game. We've been meeting for months now and so far we have a pretty buffed out Game Design Document as well as much audio/visual concept art. Our programmers are itching to progress on our own end. Each person in our programming team is well versed in C++, but is very familiar with C#. We have enough experience and skill that we're confident that we will be successful with our game, and we're looking to build our own game engine in XNA as it seems like it would be worth our time and effort in the end. The game itself will be a 2D beat 'em up style game to be released over xbox live and the PC. It's play style will be similar to that of Castle Crashers or Scott Pilgrim vs The World. We want to design the game engine to allow us to better implement our assets into the game as well as to simplify the creation of design elements/mechanics. Currently between our programmers, we have books such as "XNA 4.0" and "Game Coding Complete, Third Edition," but we'd still like more information on both XNA and (especially) building a game engine from scratch. What are any other good books, websites, or resources we could use to further map out and program our game engine?

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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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• Welcome to the Gamification Blog!

  - by erikanollwebb

  If you are here, you have probably been hearing about gamification and game mechanics, and wondering how it all fits into the enterprise space.  Although I've been leading some efforts in the Fusion Apps UX team on gamification for a while, I have left it to a couple of others to blog on it.  For example, check out the links below from Ultan Ó Broin if you haven't seen these already: #gamifyOracle: Oracle Applications Gamification Worldwide #UX Design Jam Oracle Applications UX Gamification Worldwide All Hands Day Gamification, Schamification: Reality Isn't Broken. Your User Experience Is I've been tweeting to #GamifyOracle for a while but I'll try to use this blog to put a little of my own thoughts on the matter together.  In the meantime, I spoke at the GSummit in June on the things we're working on and I'll be leading a workshop and speaking on Enterprise Gamification at the Enterprise Gamification Summit in September.  Oracle peeps, let me know if you are interested in attending, since we can get a group discount for the workshop/summit.  We're also planning to conduct some more research on gamification in the enterprise space at Oracle OpenWorld this October.  In the meantime, let me know if there are issues you are interested in and I'll try to put some things together here.  I'd love to know who all is working on gamification in Oracle--I know some of you but I'm sure there are others!

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• What is the breakdown of jobs in game development?

  - by Destry Ullrich

  There's a project I'm trying to start for Indie Game Development; specifically, it's going to be a social networking website that lets developers meet through (It's a secret). One of the key components is showing what skills members have. Question: I need to know what MAJOR game development roles are not represented in the following list, keeping in mind that many specialist roles are being condensed into more broad, generalist roles: Art Animator (Characters, creatures, props, etc.) Concept Artist (2D scenes, environments, props, silhouettes, etc.) Technical Artist (UI artists, typefaces, graphic designers, etc.) 3D Artist (Modeling, rigging, texture, lighting, etc.) Audio Composer (Scores, music, etc.) Sound Engineer (SFX, mood setting, audio implementation, etc.) Voice (Dialog, acting, etc.) Design Creative Director (Initial direction, team management, communications, etc.) Gameplay Designer (Systems, mechanics, control mapping, etc.) World Designer (Level design, aesthetics, game progression, events, etc.) Writer (Story, mythos, dialog, flavor text, etc.) Programming Engine Programming (Engine creation, scripting, physics, etc.) Graphics Engineer (Sprites, lighting, GUI, etc.) Network Engineer (LAN, multiplayer, server support, etc.) Technical Director (I don't know what a technical director would even do.) Post Script: I have an art background, so i'm not familiar with what the others behind game creation actually do. What's missing from this list, and if you feel some things should be changed around how so?

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• Best way to generate pieces in match-3 games, and then tracking them?

  - by JonLim

  I've been working on a match-3 style game in Actionscript using Flixel, and so far, I've been able to build the core mechanics of the game, including board generation, piece generation, piece swapping and movement, and checking algorithms. However, I am now running into issues with clearing out pieces and letting the above pieces fall down and generating new pieces. The reason I'm running into these issues is that when all of the pieces are generated, the pertinent values (position, sprite ID, and sprite object) are pushed into an array that helps me track everything, all the time. When pieces are moved, I swap the values of the corresponding arrays and life goes on. And that array is the core of my problem: if a row in the middle of the board clears out, ideally, all of the pieces above the cleared pieces should fall down to take their place and new pieces are generated at the top and also fall into place. Except if I try to do that now, all the pieces can fall down, but then I'd have to bump all of their values into the right arrays (oh god my head) and then generate new pieces and fit THOSE into the correct place in the array. Am I overthinking this? Or is there a far better way to track these pieces? Thanks guys!

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• Why does Raphael's framerate slow down on this code?

  - by Bob

  So I'm just doing a basic orbit simulator using Raphael JS, where I draw one circle as the "star" and another circle as the "planet". It seems to be working just fine, with the one snag that as the simulation continues, its framerate progressively slows down until the orbital motion no longer appears fluid. Here's the code (note: uses jQuery only to initialize the page): $(function() { var paper = Raphael(document.getElementById('canvas'), 640, 480); var star = paper.circle(320, 240, 10); var planet = paper.circle(320, 150, 5); var starVelocity = [0,0]; var planetVelocity = [20.42,0]; var starMass = 3.08e22; var planetMass = 3.303e26; var gravConstant = 1.034e-18; function calculateOrbit() { var accx = 0; var accy = 0; accx = (gravConstant * starMass * ((star.attr('cx') - planet.attr('cx')))) / (Math.pow(circleDistance(), 3)); accy = (gravConstant * starMass * ((star.attr('cy') - planet.attr('cy')))) / (Math.pow(circleDistance(), 3)); planetVelocity[0] += accx; planetVelocity[1] += accy; planet.animate({cx: planet.attr('cx') + planetVelocity[0], cy: planet.attr('cy') + planetVelocity[1]}, 150, calculateOrbit); paper.circle(planet.attr('cx'), planet.attr('cy'), 1); // added to 'trace' orbit } function circleDistance() { return (Math.sqrt(Math.pow(star.attr('cx') - planet.attr('cx'), 2) + Math.pow(star.attr('cy') - planet.attr('cy'), 2))); } calculateOrbit(); }); It doesn't appear, to me anyway, that any part of that code would cause the animation to gradually slow down to a crawl, so any help solving the problem will be appreciated!

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