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  • 2D fighting bounding boxes

    - by user36420
    I'm prototyping a 2D platformer/brawler game for uni and I'm having some trouble with creating collision/bounding boxes. This is most likely going to end up on a Vita so I do have some library constraints as well as performance implications. None of this has yet been implemented but is all theory. My idea was to have the artist create a sprite sheet for the character animation and then a second identical sprite sheet with the corresponding collisions in a solid colour (e.g green for where the character can be hit and red for dealing damage, near the foot if kicking etc.) With this, I would then parse the collision sheet and generate the various collisions required storing them in the character model. This is the point I feel would be most inefficient. While I think this is a possible solution, I was wondering if there was a more standard way of doing this or a more efficient way as I feel this would have severe performance problems.

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  • Recently purchase a Linode server. Wondering how to keep track of modifications

    - by eveo
    I purchased a server for the sole purpose of familiarizing myself with the CLI so I don't get royally screwed when I enter a real development environment. However, I have some questions. I've managed to SSH into my server, all is fine and dandy, installed LAMP too which went flawlessly. Now I'm wondering, the more changes I do, the more cluttered my server will become. Can I revert changes? I don't want to keep customizing things and installing things and just having a cluttered server overall. Where can I track changes to my system?

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  • What could be a reason for cross-platform server applications developer to make his app work in multiple processes?

    - by Kabumbus
    We consider a server app development - heavily loaded with messing with big data streams. An app will be running on one powerful server. A server app will be developed in form of crossplatform application - working on Windows, Mac OS X and Linux. So same code, many platforms for stand alone server architecture. We wonder what are the benefits of distributing applications not only over threads but over processes as well, for programmers and server end users? Some people said to me that even having 48 cores, 4 process threads would be shared via OS through all cores, is that true?

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  • Drupal Blog vs. WordPress Blog for a Drupal Website? [closed]

    - by Norma Riter
    Is there a blog of preference for SEO, when it comes down to Drupal websites. I ask as WordPress seems to have the better plug-ins, though may not integrate as well. Any thoughts on this? I am asking from primarily a SEO perspective though also a design one as well. In other words, there are so many fabulous blog templates in WordPress and not sure if there are in Drupal. I seem to be having a struggle finding Drupal blogs to purchase, such as premium blogs.

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  • How do I migrate web files from a Plesk 8 installation (on a slaved HDD) to a Plesk 10.4.4 installation?

    - by Ranger
    Due to Plesk 8 being at End of Support our host setup a new installation of RHEL and Plesk 10 on a new hard drive. They then slaved the old drive to the new so that we could migrate all our files using SSH. I am having challenges correctly migrating the sub domain files. The path to subdomain root folder in Plesk 10.4.4 is confusing as I don't know where to copy the files to. The path to the files on the slaved drive is: "/mnt/old-drive/var/www/vhosts/domain_name.com/subdomains/SUBDOMAIN_NAME/", meanwhile on the new installation I have "/var/www/vhosts/SUBDOMAIN_NAME.domain_name.com". There is an httpdocs folder in the '/var/www/vhosts/domain_name' folder but none in the '/var/www/vhosts/SUBDOMAIN_NAME.domain_name.com' folder. Where do I copy my subdomain files to? Please help.

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  • Internet keep dropping in Ubuntu 12.04

    - by Kokuryuu
    I am having an issue with my Ubuntu, I keep getting "server not found" errors when I try to go online, I have tried pinging my DNS and Goggle, and it seems like no packets are dropped, but still my Internet is not working Also my other PCs in the house have working Internet connection. I am sure there is no firewall active here, also nothing on my router is blocking, and I checked cables. I have no issues in the same PC in Windows. It is only in Ubuntu. Any ideas?

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  • Is it okay to have many Abstract classes in your application?

    - by JoseK
    We initially wanted to implement a Strategy pattern with varying implementations of the methods in a commmon interface. These will get picked up at runtime based on user inputs. As it's turned out, we're having Abstract classes implementing 3 - 5 common methods and only one method left for a varying implementation i.e. the Strategy. Update: By many abstract classes I mean there are 6 different high level functionalities i.e. 6 packages , and each has it's Interface + AbstractImpl + (series of Actual Impl). Is this a bad design in any way? Any negative views in terms of later extensibility - I'm preparing for a code/design review with seniors.

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  • Where can work-at-home coders go to find other coders to real-time chat with and get support like they were on a large team at an established company?

    - by cypherblue
    I used to work in an office surrounded by a large team of programmers where we all used the same languages and had different expertises. Now that I am on my own forming a startup at home, my productivity is suffering because I miss having people I can talk to for specific help, inspiration and reality checks when working on a coding problem. I don't have access to business incubators or shared (co-working) office spaces for startups so I need to chat with people virtually. Where can I go for real-time chat with other programmers and developers (currently I'm looking for people developing for the web, javascript and python) for live debugging and problem-solving of the tasks I am working on? And what other resources can I use to get fellow programmer support?

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  • Installing Broadcom Wireless Drivers

    - by Fer1805
    I'm having serious problems installing the Broadcom drivers for Ubuntu. It worked perfectly on my previous version, but now, it is impossible. What are the steps to install Broadcom wireless drivers for a BCM43xx card? I'm a user with no advance knowledge in Linux, so I would need clear explanations on how to make, compile, etc. lspci -vnn | grep Network showed: Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN Controller [14e4:432b] iwconfig showed: lo no wireless extensions. eth0 no wireless extensions.

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  • Different behavior when launched from terminal instead of Unity launcher

    - by dgkontopoulos
    I have written two Perl/Gtk programs. When launched from the dash menu, they run just fine. However, if I try to launch them from terminal using the very same command found in their .desktop files, their Unity launcher will be blurry and will remain inactive when clicked, if I keep it in the Unity bar. The problem is solved if the Exec part of the desktop file is replaced with perl path_to_script However, that leads to other problems, including a lintian warning and forcing all Perl GUI applications running from terminal to adopt the same launcher. This issue is quite annoying since one of the programs relies on a different (Python) program in order to be launched and this results in having a blurry and inactive launcher.

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  • Apress "Introducing Visual C# 2010" - ISBN 978-1-4302-3171-4 - Conclusion

    - by TATWORTH
    After having spent several weeks reading this book (1230 pages before the index!), I can thoroughly recommend this book as a practical introduction to Visual C# 2010 both to people learning C# and to experianced C# users. It introduces C# through practical examples then gives a good introduction to the Dot Net framework. After dealing with Data Access, it gives a brief introduction to variousUI technologies. The final section deals with advanced topics including a thoroughly practical intruction to windows services. There are copious coding examples and useful tips. Many chapters begin with a quick problem solver solution reference. In short "Introducing Visual C# 2010" in the words of the sub title, is an excellent start to your C# journey with an expert by your side leading by example.

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  • Algorithm to increase odds of matching when randomly selecting

    - by Bryan
    I am building a mobile game loosely based on dual n-back http://brainworkshop.sourceforge.net/tutorial.html Now with the game I have 9 squares (numbered 1 through 9) and 9 letters (A through K) In the current code, I randomly select a square (e.g. 3) and a letter (e.g. C), then repeat the random selection for the next turn. For 1-back, I test whether either, neither or both match the previous turn. The problem with my current code is I get very few matches - I can go through many turns without having either match. How can I increase the match frequency, or alternatively decrease the randomness so a match is more likely? I am not looking for specific code (but pseudo-code would be fine) - just more an approach to increase match frequency.

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  • Can decoupling hurt maintainability in certain situations?

    - by Ceiling Gecko
    Can the fact that the business logic is mapped to interfaces instead of implementations actually hinder the maintenance of the application in certain situations? A naive example with the Java's Hibernate framework would be, that for example (provided I don't have the whole code-base in my head, the project structure is a mess and classes are named with arbitrary names) if I wish to see what's going on in a certain DAO, to see if it actually is doing what it's supposed to do, then instead of traversing backwards up the tree from the point where the data service is invoked (where the tree will end in an interface with no implementation details whatsoever apart from the signature) I have to for example go and look for a configuration XML file to see which class is mapped to said interface as the implementation before being able to access the actual implementation details. Are there any situations where having loose coupling can actually hurt maintainability?

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  • pulseaudio: no microphone configuration

    - by mitsch
    Updated Ubuntu to precise from oneiric on a Dell Inspirion Mini 10 (with an Intel HDA-Soundcard). I can't remember having any issues with the microphone. I didn't need it - I tried ekiga the first time in precise. I couldn't hear any sound in the echo test of ekiga, so I switched to the "System Preferences" and looked for the microphone to boost it. Surprisingly, the microphone input was greyed out - I couldn't mute or unmute, i couldn't even move the volume-slider. On the other hand: I could change the microphone-setting on console with alsamixer, so don't worry about that… :) I just wanted to ask, how to get pulseaudio back to the known, comfortable behaviour. Some newbies won't know the trick to use alsamixer… My soundcard (output of lspci): 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02) Greets!

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  • What is the aim of software testing?

    - by user970696
    Having read many books, there is a basic contradiction: Some say, "the goal of testing is to find bugs" while other say "the goal of the testing is to equalize the quality of the product", meaning that bugs are its by-products. I would also agree that if testing would be aimed primarily on a bug hunt, who would do the actual verification and actually provided the information, that the software is ready? Even e.g. Kaner changed his original definiton of testing goal from bug hunting to quality assesement provision but I still cannot see the clear difference. I percieve both as equally important. I can verify software by its specification to make sure it works and in that case, bugs found are just by products. But also I perform tests just to brake things. Also what definition is more accurate?

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  • Isn't class scope purely for organization?

    - by Di-0xide
    Isn't scope just a way to organize classes, preventing outside code from accessing certain things you don't want accessed? More specifically, is there any functional gain to having public, protected, or private-scoped methods? Is there any advantage to classifying method/property scope rather than to, say, just public-ize everything? My presumption says no simply because, in binary code, there is no sense of scope (other than r/w/e, which isn't really scope at all, but rather global permissions for a block of memory). Is this correct? What about in languages like Java and C#[.NET]?

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  • SEO penalty for landing page redirects

    - by therealsix
    Using ebay as an example- lets say I have a large number of items whose URLs' look like this: cgi.ebay.com/ebaymotors/1981-VW-Vanagon-manual-seats-seven-/250953153841 I want to give my client the ability to put links to these items on their website EASILY, without knowing or checking my URL. So I created a redirect service that will map their identifier with my URL: ebay.com/fake_redirect_service/shared_identifier9918 would redirect to the link above. This works great- my clients can easily setup these links with information they already have, and the user will see the page as usual. So on to the problem... I'm concerned that this redirecting service will have a negative impact on my SEO ranking. Having a landing page redirect you immediately to a different URL seems like something a typical spam site would do. Will this hurt me? Any better solutions?

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  • Why I loose my page rank after 301 redirect?

    - by rajesh.magar
    As we all know Google treat sub-domain as completely separate domain so we have to fight for both, to get ranked in search results. Right! So one of my client website was like they having "example.com" and "Blog.example.com". So in mind to keep all stuff in one place we redirect "blog.example.com" to "example.com/blog/" But in this case we where loose our pagerank and still wondering where we went wrong or it just take few more time to showoff. so what is the reason behind this will be. Thanks in advance.

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  • Predicted target location

    - by user3256944
    I'm having an issue with calculating the predicted linear angle a projectile needs to move in to intersect a moving enemy ship for my 2D game. I've tried following the document here, but what I've have come up with is simply awful. protected Vector2 GetPredictedPosition(float angleToEnemy, ShipCompartment origin, ShipCompartment target) { // Below obviously won't compile (document wants a Vector, not sure how to get that from a single float?) Vector2 velocity = target.Thrust - 25f; // Closing velocity (25 is example projectile velocity) Vector2 distance = target.Position - origin.Position; // Range to close double time = distance.Length() / velocity.Length(); // Time // Garbage code, doesn't compile, this method is incorrect return target.Position + (target.Thrust * time); } I would be grateful if the community can help point out how this is done correctly.

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  • 3D mobile game development [on hold]

    - by SCM
    I am not a developer or programmer and, I am planning an educative project that will involve having students to develop a cross-platform, 3D mobile game, similar to the SimCity concept. I need to write a project requirement and I'd like to pick someone's brain to understand what's involved in developing such a project: -Is it realistic to have one or two students to do it? and along their other modules at uni? - How much time can it take to develop from scratch? - what are the different skills required? Thank you All SCM

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  • problem with .wax format

    - by Pranjal Singh
    I installed Ubuntu 10.4 onto a pc for an elderly woman. It was supposed to solve the problems she was having with windows, ie: she would constantly remove things, or try to fix problems herself. So I figured that Linux would solve those issues. However, what I didn't take into account was that she watches " http://www.shepherdschapel.com/broadband.htm " and when using Ubuntu, I can't seem to find a media player to make the files work. I am out of ideas. I tried kplayer, and it worked (sort of). The file that is downloaded from the site when you click the windows media player site one link is, .wax format. Which is an instruction file for windows media player. Is there anything I can do to make these videos work?

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  • 3D array in a 2D array

    - by Smallbro
    Currently I've been using a 3D array for my tiles in a 2D world but the 3D side comes in when moving down into caves and whatnot. Now this is not memory efficient and I switched over to a 2D array and can now have much larger maps. The only issue I'm having now is that it seems that my tiles cannot occupy the same space as a tile on the same z level. My current structure means that each block has its own z variable. This is what it used to look like: map.blockData[x][y][z] = new Block(); however now it works like this map.blockData[x][y] = new Block(z); I'm not sure why but if I decide to use the same space on say the floor below it wont allow me to. Does anyone have any ideas on how I can add a z-axis to my 2D array? I'm using java but I reckon the concept carries across different languages.

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  • Auto-provisioning hosting via API

    - by user101289
    I've built a sort of 'software as a service' website package for a specific industry. What I am looking to do is create a payment gateway that allows users to subscribe-- and once the subscription is active, it would auto-provision a web hosting plan for them (a shared account on a server, probably in a chroot'd environment so each user would be insulated from others). Ideally it would auto-install a CMS as well. Tons of web hosts provide a simple reseller plan where I could manually create all the users' hosting accounts-- but so far none that I've found allow you to do this via API. Is there a way to do this short of writing custom shell scripts on something like an EC2 platform? I'd prefer to leave all the server maintenance in the hands of dedicated support staff rather than having to manually handle updates, backups, etc. Thanks for any tips.

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  • How can I get my wireless webcam to work?

    - by hellocatfood
    I recently bought this wireless webcam. I'm having trouble getting it to work on Ubuntu 11.04. I ran lsusb and got the folowing information about the device Bus 006 Device 003: ID 0416:a91a Winbond Electronics Corp. I did a Google serach for teh device ID and this website informs me that it matches the LogiLink Wireless Webcam (so Maplin probably just rebranded this!). What this website states is that this device should work, which it doesn't. The problem I'm facing is that I don't get any actual video being streamed or shown. The built in microphone works and, when running Cheese, when I press the camera button on the webcam itself the software recognises that the button is pressed. On that note, when running cheese from the terminal with this webcam attached I get the following error libv4l2: error getting pixformat: Invalid argument libv4l2: error setting pixformat: Input/output error Any help is appreciated

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  • Connect players with same phone language settings

    - by Abin George
    I am working on a turn-based multiplayer game using game center. The game also use Spanish localisation. It is enabled by reading the device language settings. Now my requirement is: When i start a turn based match, my opponent should have the same language setting in his/her phone as I am having. How can I make this possible. I use the following code to connect - (void)findTurnBasedMatchWithViewcontroller:(UIViewController *)viewController forDelegate:(id)argDelegate { self.delegate = argDelegate; presentingViewController = viewController; GKMatchRequest *request = [[GKMatchRequest alloc] init]; request.minPlayers = 2; request.maxPlayers = 2; [manager setCurrentGameType:kTurnBased]; GKTurnBasedMatchmakerViewController *mmvc = [[GKTurnBasedMatchmakerViewController alloc] initWithMatchRequest:request]; mmvc.turnBasedMatchmakerDelegate = self; mmvc.showExistingMatches = NO; [presentingViewController presentViewController:mmvc animated:YES completion:^(void) { }]; }

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