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• Starting out with 2D cross-platform game development [closed]

  - by Aran

  I am wanting to challenge myself to build a simple game, that has a character and a randomly generated world. If I get anywhere with it I may perhaps I'll develop it into something more, but the key challenge I want to tackle is cross-platform. I'd also want to have a go at creating engine myself, doing lighting and other bits. Is it worth me using a system like Unity or do I go down a more custom route? The game I would like to make is a 2D game so whether that changes the tools I should use, it would be great to know as well. Supporting mobiles isn't something I am worried about at moment, just looking for Mac and Windows for time being. In future I'll consider other platforms if I get anywhere with the development. So if anyone has any recommendations for a language, engine or system to use would love to her your thoughts.Including pros and cons would be helpful and appreciated and if you can do comparisons that would be awesome as well!

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• Wine dependencies

  - by user206923

  Hello I am new here and I have been trying to install wine: $ sudo apt-get install wine1.7 Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: wine1.7 : Depends: wine1.7-i386 (= 1.7.4-0ubuntu4) but it is not installable E: Unable to correct problems, you have held broken packages. what should i do ?

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• sudo does not work in GUI after upgrade to 13.10

  - by Radim

  On 2 completely different machines I have the same problem after upgrading from 13.04 to 13.10: All programs/task requiering sudo permissions (software updater, starting synaptic, installing programs, shutdown) do not start / execute. No gksu (or other) window comes up. Synaptic never shows, software updater pops up with a "you are not allowed to perform this action" message. All programs / task work when started from terminal with sudo, like "sudo synaptics" asks for my password, starts and works as expected. I am in the admin group which is liked in sudoers config (verified with visudo and getent group admin). Some link from GUI to gksu (or similar) is broken. Please help! Radim

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• How to print with PYGTK on quickly

  - by user88476

  I am trying to make a program that can open save and print texts with Quickly, but I can't get the printing part to work. In my code when you press the "printbutton" it opens a print dialog: def on_printbutton_clicked(self,widget): self.printdialog.show() and that works fine. And when you click "ok" it will gather the settings from the dialog and try to print: def on_printdialog_response(self,widget,ok): printjob = gtkunixprint.PrintJob(self.filename,self.printdialog.get_selected_printer,self.printdialog.get_setting,self.printdialog.get_page_setup) but when I run it doesn't work and just gives me this: NameError: global name 'gtkunixprint' is not defined Is "gtkunixprint" wrong? Or is it something else in my code? Or should I first import something? I hope you can help me.

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• Maya is lagging in a specific way...?

  - by Aerovistae

  My Maya installation worked perfectly. It is not my computer. Something caused it to stop working overnight, somehow. When I try to drag a vertex or something like that, it moves the vertex, but then I have to click like 3 times somewhere outside the mesh before the actual mesh will catch up and follow the vertex. Until I do that, it just stays as it was, with a floating vertex somewhere inside it or outside it. It makes modeling borderline impossible and completely infuriating. What ought to be happening is what we're all used to-- as I move the vertex, the mesh follows it actively, so I can see what it looks like at every given moment until I release the vertex in its new position. Other weird thing: this only applies to complex meshes, like a couple thousand faces. A simple cube works fine. What gives?? Anybody?

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• Is there a way to recover a file that I have deleted but is still open somewhere?

  - by George Edison

  This question is related to How to recover deleted files? but it is slightly different in nature. Suppose I have a file named ~/something open in a text editor. Further suppose that I open a terminal and run the following command while the file is still open in the text editor: rm ~/something This will delete the file. Now suppose that I changed my mind and wanted to get the file back. The file is still open in the text editor, so it hasn't been removed from the disk or filesystem yet. Is there any way to recover it?

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• The Best Websites for Listening to Podcasts and Learning How to Create Your Own

  - by Lori Kaufman

  Podcasts, or webcasts, are shows about many different topics that are broadcast over the web and broken up into parts, or episodes.  You subscribe to podcasts and new episodes are automatically delivered to you as they are released. We’ve collected the best websites for finding many different types of webcasts and for finding resources to help you in creating and producing your own podcasts. In the coming weeks, we will be publishing other articles about the best websites for educating and entertaining yourself online, such as sites for eBooks, audiobooks, movies and TV shows, documentaries, user-made videos, free online courses, news and information, and music (downloads, streaming, and radio). How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It? HTG Explains: What Is Windows RT and What Does It Mean To Me?

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• Storing hierarchical template into a database

  - by pduersteler

  If this title is ambiguous, feel free to change it, I don't know how to put this in a one-liner. Example: Let's assume you have a html template which contains some custom tags, like <text_field />. We now create a page based on a template containing more of those custom tags. When a user wants to edit the page, he sees a text field. he can input things and save it. This looks fairly easy to set up. You either have something like a template_positions table which stores the content of those fields. Case: I now have a bit of a blockade keeping things as simple as possible. Assume you have the same tag given in your example, and additionally, <layout> and <repeat> tags. Here's an example how they should be used: <repeat> <layout name="image-left"> <image /> <text_field /> </layout> <layout name="image-right"> <text_field /> <image /> </layout> </repeat> We now have a block which can be repeated, obviously. This means: when creting/editing a page containing such a template block, I can choose between a layout image-left and image-right which then gets inserted as content element (where content for <image /> and <text_field /> gets stored). And because this is inside a <repeat>, content elements from the given layouts can be inserted multiple times. How do you store this? Simply said, this could be stored with the same setup I've wrote in the example above, I just need to add a parent_id or something similiar to maintain a hierarchy. but I think I am missing something. At least the relation between an inserted content element and the origin/insertion point is missing. And what happens when I update the template file? Do I have to give every custom tag that acts as editable part of a template an identifier that matches an identifier in the template to substitue them correctly? Or can you think of a clean solution that might be better?

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• XRegExp Regular Expression Library for JavaScript

  - by Jan Goyvaerts

  XRegExp is an open source JavaScript library. It extends JavaScript’s regex syntax with features such as free-spacing, named capture, mode modifiers, and Unicode categories, blocks, and scripts. It also provides its own test(), exec(), forEach(), replace(), and split() methods that eliminate most cross-browser inconstencies and bugs. Anyone using non-trivial regexes in their JavaScript code should seriously consider using XRegExp. Last month’s update of the Regular-Expressions.info website added full coverage of XRegExp to the regex tutorial and regex reference sections. But the tools & languages section was missing the XRegExp page, resulting in broken links in the tutorial and reference sections. This page has now been added.

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• Can't login to Ubuntu One

  - by Gabriel

  I uninstalled Ubuntu One about two months ago and now I re-installed it. I can still login with my account through the site (Ubuntu One) but the client keeps telling me "The authentication failed". If I try to use the Recover password option it also fails with telling me that my email address is not recognized (while I can use it with zero issues through the site) If I attempt to create a new account from the client, it also fails to load the captcha every time. Something is clearly broken here but I can't figure out what it is. Any ideas?

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• Is it relevant to warn about truncating real constants to 32 bits?

  - by zneak

  I'm toying around with LLVM and looking at what it would take to make yet another strongly-typed language, and now that I'm around the syntax, I've noticed that it seems to be a pet peeve of strongly typed language to warn people that their constants won't fit inside a float: // both in Java and C# float foo = 3.2; // error: implicitly truncating a double into a float // or something along these lines Why doesn't this work in Java and C#? I know it's easy to add the f after the 3.2, but is it really doing anything useful? Must I really be that aware that I'm using single-precision reals instead of double-precision reals? Maybe I'm just missing something (which, basically, is why I'm asking). Note that float foo = [const] is not the same thing as float foo = [double variable], where requiring the cast seems normal to me.

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• Developing instincts and "subconscious debugging" [closed]

  - by ggambett

  For some time now (a couple of years, perhaps?) I've noticed something that happens when I'm writing code. I write something with a syntax error, or some other subtle error. I don't really notice it on a conscious level, but I have a weird feeling about what I just wrote. I then try to compile it and I get a warning or error on the line that provoked the feeling. Lately I've been trying to pay attention to these feelings as they happen, and more often than not, I find errors right there. It's like I'm developing a subconscious debugger (or at least subconscious syntax checking ;)) I've heard of people fixing bugs in their sleep (I did a couple of times), but I don't think I've heard this kind of thing. Does it happen to someone else?

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• Steps after SQL Injection detected

  - by Zukas

  I've come across SQL injection vulnerabilities on my companies ecommerce page. It was fairly poorly put together. I believe I have prevented future attempts however we are getting calls about fraudulent credit card charges on our site and others. This leads me to believe that someone was able to get a list of our credit card numbers. What doesn't make sense is that we don't store that information and we use Authorize.net for the transaction. If someone was able to get the CC#s, what should I do next? Inform ALL of our customers that someone broken into our system and stole their information? I have a feeling that will be bad for business.

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• Telephone Call Answering Machine

  - by Buford T. Justice

  I have been looking for a telephone call answering machine program for Linux, but I haven't had much luck. In Windows, I have used CallStation (http://imptec.com/callstation.htm) for many years. I am looking for something like CallStation where calls can be answered or hung-up on, faxes can be received, Caller ID is shown, calls can be recorded in their entirety, etc. Is there anything like that for Linux? In fact now in Windows (I believe this started with either Windows XP or Vista) calls and recordings can only be recorded for like 55 seconds. I have heard it is because Microsoft changed something with Windows' voice modem support. I am hoping Linux does not suffer from this.

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• Is there a name for this use of the State design pattern?

  - by Chris C

  I'm looking to see if there is a particular name for this style of programming a certain kind of behavior into a program. Said program runs in real time, in an update loop, and the program uses the State design pattern to do some work, but it's the specific way it does the work that I want to know about. Here's how it's used. - Object Foo constructed, with concrete StateA object in it - First loop runs --- Foo.Run function calls StateA.Bar --- in StateA.Bar replace Foo's state to StateB - Second loop runs --- Foo.Run calls StateB.Bar - Third loop runs --- Foo.Run calls StateB.Bar - Fourth loop --- etc. So in short, Foo doesn't have an explicit Initialize function. It will just have Run, but Run will do something unique in the first frame to initialize something for Foo and then replace it with a different action that will repeat in all the frames following it- thus not needing to check if Foo's already initialized. It's just a "press start and go" action. What would you call implementing this type of behavior?

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• replacing kernel on non-booting ec2 instance

  - by TheToolBox

  So I had an amazon ec2 instance crash during the update to 14.04LTS. Frustratingly, it appears the kernel might be bad (or at least that's what the log below says to me, I could totally be wrong). I'm able to mount the volume to another, working server, chroot the broken volume, and sudo apt-get remove linux-headers-3.MOSTRECENT. Unfortunately though, when I try sudo update-grub, it comes back with /usr/sbin/grub-probe: error: cannot find a device for / (is /dev mounted?). What am I missing? Here's the log from the server's attempted bootup: [H[J Booting 'Ubuntu 14.04 LTS, memtest86+' root (hd0) Filesystem type is ext2fs, using whole disk kernel /boot/memtest86+.bin ============= Init TPM Front ================ Tpmfront:Error Unable to read device/vtpm/0/backend-id during tpmfront initialization! error = ENOENT Tpmfront:Info Shutting down tpmfront xc: error: panic: xc_dom_core.c:621: xc_dom_find_loader: no loader found: Invalid kernel xc_dom_parse_image returned -1 close(3) Error 9: Unknown boot failure Press any key to continue... Thanks in advance!

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• How do you know when to change jobs? [closed]

  - by dustyprogrammer

  Possible Duplicate: When do you know it's time to move on from your current job? I have been working for a couple years now. I just want to know what people think about leaving one company for another, or to start looking around for other positions. I tend to use people's resumes as a guideline for when to change from one company to another. I am approaching, the time in my life where most of those people I look too, move away from their first position to pursue others. I know that isn't something good to base my decisions on what other do. I was wondering when is it time to move companies. I am currently happy at my position, and I am learning tons. Its just something I have been seeing a lot, I would like to get a feel for what people think. Thanks.

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• Can't install ATI proprietary drivers in 12.10. Unity is Missing

  - by EApubs

  I have a laptop with ATI Radeon 6770M HD Hybrid graphics card. In Ubuntu 12.04, I installed the fglrx driver through "additional drivers" and it worked. (I can even switch GPUs). But in the new Ubuntu 12.10, after installing, Unity won't load. Only the mouse and the wallpaper. If I initialize the settings sudo aticonfig --initial then after rebooting it gives a warning saying I'm in low graphics mode! How to fix this? PS : Earlier i used software source to install the drivers. But when using the terminal, I got this warning : update-alternatives: warning: forcing reinstallation of alternative /usr/lib/fglrx/ld.so.conf because link group x86_64-linux-gnu_gl_conf is broken Update : Filed a bug report in launchpad : https://bugs.launchpad.net/fglrx/+bug/1068661

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• How can I personalize my MacBook Pro Touchpad?

  - by Barkerto

  I'm running Ubuntu 12.04 LTS on a MacBook Pro 5.5. I'm just wondering if there is something that takes all the kinks out of the touch-pad. It works good, but it feels sluggish, double tap works about 75% of the time and sometimes while I it somehow selects something on a different page (although I'm not sure if that has to deal with the touch-pad and not weird laptop bugs for a new LTS) If there are any programs, apps, commands aside from the built in system preferences mouse and track-pad touch-pad menu that allow someone to "optimize" touch-pad potential.

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• Computer crashed during 3.0.0.17-generic kernel upgrade

  - by Z Swim

  My computer crashed (due to heat) during the update process for the 3.0.0.17-generic kernel upgrade. My computer will not boot ant all in 3.0.0.17 now and 3.0.0.16 is unstable (wireless networking doesn't work, also crashes often). I found the boot to previous versions tool at start up and the last stable version is 3.0.0.15-generic. However, my computer still thinks that it has 3.0.0.16-generic and 3.0.0.17-generic, even though both of these versions are broken. Is there anyway to force a reinstall of the 3.0.0.16-generic and 3.0.0.17-generic kernel updates from 3.0.0.15 and associated other updates?. (Without having to do a full reinstall?) I am running ubuntu 11.10. Thanks!

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• What is an effective way to organize tasks for a new project?

  - by Dulan

  Is there a practical solution to organizing the initial tasks for a new project? To elaborate, imagine the features/stories/goals are laid out for a project. How might one go about organizing those into sane tasks for the first few versions? The scenario I typically have in mind has the features listed as a high-level reference for what the end user-experience should involve. The tasks for constructing such features are then broken down into chunks (such as "create interface for X component"). Such a task is not necessarily "tied" to only that feature and may be useful when building subsequent features. Is breaking features down into small, code-able solutions valid? Or should they be slightly removed from any specific implementation? I do not expect that there is one "right" answer to this question, but I am looking for a fairly pragmatic and unobtrusive approach. As a note, I'm looking for solutions that are independent of any tools or "systems" used for managing the tasks themselves.

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• Adobe AIR install problem, Ubuntu x64 14.04

  - by Den Rimus

  Haven't seen this kind of error on askubuntu yet. Did everything as it says here: How can I install Adobe AIR? After sudo ./AdobeAIRInstaller.bin shows this image: dropbox.com/s/wg6cv03h5n1tqgr/adobe_air.png Meanwhile terminal shows a bunch of such messages: (setup:2579): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", Nothing is installed. Those murrine - it showed another code before ( another than setup:2579) - I googled it, installed something, it showed another code - I googled it, installed something, etc. Doesn't seem to affect installation anyhow.

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• Kubuntu won't go into suspend mode while connected to network

  - by PaulW2U

  I'm currently testing Kubuntu 11.04 but I don't think this is a bug regarding what I appreciate is still an alpha version. After extensive searching of various forums and websites I found something that made me suspect that the reason I could not go into suspend mode was due to the fact that my network connection was still active. I found that if I unmount my network connection then I can go into suspend mode without any problem. I then have to remember to mount the connection when I next use the PC. Am I missing a program or setting? Is there a config file that I can edit? How can I fix this so that my network connection is broken and remade at the appropriate time? I haven't found any indication that a bug has been reported relating to this. Thanks in advance.

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• ASP.net repeater control with SQLDataReader as data source

  - by PhilSando

  Here is the markup for the repeater control and its templates: <asp:Repeater ID="Repeater" runat="server"> <HeaderTemplate> <table> <tr> <td colspan="3"><h2>Header information:</h2></td> </tr> </HeaderTemplate> <ItemTemplate> <tr> <td><%#Container.DataItem%></td> </tr> </ItemTemplate> <FooterTemplate> </table> </FooterTemplate> </asp:Repeater>  Here is the code to populate it with data:   SQLString = "select something from foo where something"             SQLCommand = New SqlCommand(SQLString, SQLConnection)             SQLConnection.Open()             SQLDReader = SQLCommand.ExecuteReader             If SQLDReader.HasRows Then                 Contactinforepeater.DataSource = SQLDReader                 Contactinforepeater.DataBind()             End If         End If         SQLConnection.Close()         SQLDReader.Close()

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• Anti-depressant and programming: does it reduce your thinking and focusing abilities ?

  - by user12358

  I wanted to ask your opinion on anti-depressants, since I took them daily for 3 years now, but I can't be sure if I'm less perfomant with them or without, since I never withdrawed. I'm still at school at the age of 25, still having some motivation problems (for example I can't get used to do something at school if I don't think it will teach me something), but I'm quite motivated to work in the video-game field, since I have some personnal projects in mind. I know C++ programming etc, I'm still learning techniques, but do you think I should try more to do my project instead of just following the work I'm assigned to ? Have you had experience with depression or anti-depressants ? How did it affect your work ? Do you think that being depressed or half-depressed can improve creativity ? Do you feel it has affected the way you end up writing your algorithms ? EDITED

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