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  • Random enemy placement on a 2d grid

    - by Robb
    I want to place my items and enemies randomly (or as randomly as possible). At the moment I use XNA's Random class to generate a number between 800 for X and 600 for Y. It feels like enemies spawn more towards the top of the map than in the middle or bottom. I do not seed the generator, maybe that is something to consider. Are there other techniques described that can improve random enemy placement on a 2d grid?

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  • Libraries for game developement in c++? [on hold]

    - by LPeter1997
    It's time for me to start developing games in c++ (I have experience in game developement with xna and java). What libraries do you recommend? I tried Allegro, but the installation is pretty headcrushing already. Could you share me your experiences with the library(ies) you use? (maybe even advantages and disadvantages) By the way it's a good point if it can be easily connected to CodeBlocks or Dev-C++. Thanks for the answers!

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  • Nautilus statusbar visibilty - Quickly check free space

    - by Jeremy
    In prior versions, I would open Nautilus and check the statusbar, which would tell me how much free space there is. Now, the statusbar isn't shown by default. I know you can enable it from the View menu, but 99% of users won't do that (and I'd rather not do that, if possible). So, is there some new recommended way to keep tabs on hard drive usage? Or is there maybe some other method that I should have been using in the past but never noticed?

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  • Off-Page SEO - Is Backlinking a Sensible Pursuit?

    To qualify what I mentioned in the last article about backlinking and why to me it seems rather a silly way to assess a website's popularity. For us in the know - us internet marketers, of which there are perhaps a million around the globe, who knows, maybe more for us, we know full well that to get our own sites to rank highly in Google and in Yahoo and Bing, we need to get backlinks and we need to get quite a few.

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  • What's on Azure right now?

    - by RobbieT
    If you speak to Microsoft, they'll give you a number of active accounts, but what are those accounts actually running? It could be a collection of Hello World ASP.NET sites, or perhaps small exciting web start-ups, or maybe even the beginnings of large corporate moves to the cloud! I guess what I really wanted to know was who is using Azure but that's a much harder question to answer, so we'll stick to what for now. My super awesome comrade Theo Spears attempted to answer this by trawling every...(read more)

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  • How to control gnome-terminal from Python scrypt?

    - by user936401
    I am developing an application in PyGtk, and would like to launch a gnome-terminal and output commands to it. My user should then be able to modify the command, or maybe ignore using the up arrow ... etc. I have been able to launch a terminal, but can't work out how to send commands. This is how my application starts: class App(Gtk.Window): def __init__(self): Gtk.Window.__init__(self) process=subprocess.Popen(["gnome-terminal", "--class=App", "--name=app"], shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE) response,error=process.communicate()

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  • Structure of a Git repository

    - by Luke Puplett
    Sorry if this is a duplicate, I looked. We're moving to Git. In Subversion, I'm used to having \trunk, \branches and \tags folders. With Git, switching between branches will replace the contents of the working directory, so am I right to assume that the way we used to work just doesn't apply with Git? My guess is that I'd have a repo folder with maybe a gitignore and readme.txt, then the folders for the projects that make up the repo, and that's it.

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  • No wired and wireless connection found after upgrading 12.04

    - by ag108
    After upgrading 12.04 LTS, my wired connection works but no wireless connection found. I tried many suggestion for wireless connection on Ubuntu forum but nothing works for me. Now, maybe by mistake, I am also unable to connect Internet through wired connection. Now, (1) its says "No network devices available" and (2) in System Settings ? Hardware ? no additional driver icon is showing Please help. I don't know much about Ubuntu.

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  • Tricky situation with EF and Include while projecting (Select / SelectMany)

    - by Vincent Grondin
    Originally posted on: http://geekswithblogs.net/vincentgrondin/archive/2014/06/07/tricky-situation-with-ef-and-include-while-projecting-select.aspxHello, the other day I stumbled on a problem I had a while back with EF and Include method calls and decided this was it and I was going to blog about it…  This would sort of to pin it inside my head and maybe help others too !  So I was using DBContext and wanted to query a DBSet and include some of it’s associations and in the end, do a projection to get a list of Ids…   At first it seems easy…  Query your DBSet, call Include right afterward, then code the rest of your statement with the appropriate where clause and then, do the projection…   Well it wasn’t that easy as my query required I code my where on some entities a few degree further in the association chain and most of these links where “Many”…  I had to do my projection right away with the SelectMany method.  So I did my stuff and tested the query….  no association where loaded…  My Include statement was simply ignored !  Then I remembered this behavior and how to get it to work…  You need to move the Include AFTER your first projection (Select or SelectMany).  So my sequence became:   Query the DBSet, do the projection with SelectMany, Include the associations, code the where clause and do the final projection…. but it wouldn’t compile…   It kept saying that it could not find an “Include” method on an IQueryable… which is perfectly true!  I knew this should work so I went to the definition of the DBset and saw it inherited DBQuery and sure enough the include method was there…  So I had to cast my statement from start until the end of the first projection in a DBQuery then do the Includes and then the rest of my query….   Bottom line is, whenever your Include statement seem to be ignored, then maybe you will need to move them further down in your query and cast your statement in whatever class gives you access to the Include…   Happy coding all !

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  • Can a website become popular in a "category" (ie, not just a single page)

    - by Earlz
    I have a few keywords where my website is high ranking(2nd and 3rd result). For instance, I have 3 blog posts covering a certain kind of modem. Is it common for search engines to consider a website popular in a "category"? For instance, if I was the first result for "foobar" with one page, and then added another separate page which mentioned "foobar"(and maybe a link from the original page), would a search engine prioritize this separate page when compared to a completely separate website with a page with the same content?

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  • How can I maximum compress video files?

    - by EmmyS
    I received 4 .mov files from a client that they want on their mobile website via SlideShowPro. Each original file was between 200 and 400 mb. I've gotten each one down to about 30 mb using transmageddon as described here, but that's still really big for a mobile connection. Is there any way to shrink them even further? Maybe it's the settings; I used Output Format = MPEG4, Audio = AAC, Video = H264 (which is what is suggested by SlideShowPro.)

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  • Change reply-to in evolution

    - by ?????? ????????
    I am getting in my inbox on gmail mail from multiple addresses. When I get e-mails in gmail I can choose reply-to address. Is there such a possibility in Evolution? I know that in the advanced settings, you can specify the return address for the account, but how to make sure that there was a list of multiple addresses and be able to choose just one? Or maybe there is a possibility that at once expose the return address for letters?

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  • What are some good game development programs for kids?

    - by John Giotta
    I know a very bright little boy who excels in math, but at home he's glued to his Nintendo DS. When I asked him what he wanted to do when he grew up he said "Make video games!" I remember a few years there was mention of a MIT software called Scratch and thought maybe this kid can do want he wants to do. Has anyone used any of the "game development" for kids softwares out there? Can you recommend any?

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  • How to calculate continuous motion with angular velocity in 2d

    - by Rulk
    I'm really new with physics. Maybe someone would be able to help me to solve the next problem: I need to calculate position of an agent on the plane(2D) in next time step where time step is large(20+ seconds) What I know about agent's motion: Initial Position Direction(normalised vector) Velocity(linear function from time ) - object always moves along it's direction Angular Velocity(linear function from time) Optional: External force direction External force (linear function from time) Running discreet simulation with t-0 is not an option.

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  • Why aren't there native Javascript interpreters for Windows/Mac/Linux?

    - by MebAlone
    It seems to me it would be very useful to use Javascript for general server side scripting tasks as it has more or less the same features as Perl and Python. But AFAIK there are no generally available Javascript interpreters for the major machine architectures. I guess the other problem may be lack of libraries but surely these would come if the interpreters were there. Google's V8 maybe could be a starting point. Does anyone think we'll see this soon?

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  • Code testing practice

    - by Robin Castlin
    So now I have come to the conclusion like many others that having some way of constantly testing your code is good practice since it enables fewer people to be involved (colleges and customers alike) by simply knowing what's wrong before someone else finds out the hard way. I've heard and read some about Unit Testing and understand what it's supposed to do and all. The there are so many different types of bugs. It can be everything from web browser not being able not being able to send correct values, javascript failing, a global function messing up a piece of code somewhere to a change that looked good when testing it out but fails in some special case which was hard to anticipate. My simply finding these errors I learn to rarely repeat them again, but there seems to always be new bugs to be found and learnt from. I would guess maybe the best practice would be to run every page and it's functions a couple of times, witness the result and repeat this in Firefox, Chrome and Internet Explorer (and all smartphones apparently) to make sure it works as intended. However this would take quite some time to do consider I don't work with patches/versions and do little fixes here and there a couple of times per week. What I prefer would be some kind of page I can just load that tests as much things as possible to make sure the site works as intended. Basicly just run a lot of cURL's with POST-values and see if I get expected result. But how would I preferably not increase the IDs of every mysql rows if I delete these testing rows? It feels silly to be on ID 1000 with maybe 50 rows in total. If I could build a new project from scratch I would probably implement some kind of smooth way to return a "TRUE" on testing instead of the actual page. But this solution would for the moment being have to be passed on existing projects. My question What would you recommend to be the best way to test my site to make sure that existing functions does their job upon editing the code? Should I consider to implement a lot of edits first, then test manually the entire code to make sure it still works? Is there any nice way of testing codes without "hurting" the ID columns? Extra thoughs Would it be a good idea to associate all of my files to the different parts of my site which they affect? For instance if I edit home.php I will through documentation test if my homepage's start works as intended since it's the only part of my site it should affect.

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  • Avoid pagination pages from appearing higher than real content in SERPS

    - by WordPress Developer
    I have a gallery-type website that has about 20k of pages and naturally it uses pagination. However, sometimes /page/2 appears higher in search results than /post/201339 for example. I'd like to give emphasis to the actual content (posts, videos, whatever the site is about) and not on pages that merely list this content in a paginated matter. What is the best way to avoid this issue? Maybe a NOINDEX,FOLLOW meta tag on the paginated pages?

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  • Unable to install openjdk7 from terminal [closed]

    - by Adil
    Possible Duplicate: How can I fix a 404 Error using a PPA? Update manager generates 404 error while attempting update. Will not update When i tried to install jdk from following command: sudo apt-get install openjdk-7-jdk Following error was displayed: Err http://us.archive.ubuntu.com/ubuntu/ precise-updates/universe openjdk-7-jre-lib all 7u7-2.3.2-1ubuntu0.12.04.1 404 Not Found [IP: 91.189.91.15 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

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  • Learning SEO For Your Online Business

    One question that pops in my mind relating to SEO is, "Why SEO techniques should be considered for your Online Business?". Maybe one of the possible answers would be, "SEO helps a lot in the promotion of online business like attracting world wide audience." In this article we will take a closer look at how SEO can help in marketing different business online.

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  • I want to create an e-learning website [closed]

    - by Viswa
    I want to create an e-learning website and host it. (Maybe after some time I want to add forms.) These are the things I know: java, jsp, servlet, html (not guru, almost beginner). I don't have experience in creating websites, I did my college project using jsp,servlet and jdbc. What are the things or technology I need to know before creating website. Is it possible to create a website by one person?

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  • My Blog Needs some Upgrading !

    - by EmBeRlicious
    I have been browsing all night for a way to improve my blog on blogger and actually nothing came up just that i could include some widgets that need java codes. Witch are the best widgets i could add without killing the SEO and where is a good place i could find ways to Tweak my blog and learn to sustain it better. It's my first blog and maybe it will not go viral but at least i want to try ! Thank you so very much !

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  • How to synchronize the ball in a network pong game?

    - by Thaars
    I’m developing a multiplayer network pong game, my first game ever. The current state is, I’ve running the physic engine with the same configurations on the server and the clients. The own paddle movement is predicted and get just confirmed by the authoritative server. Is a difference detected between them, I correct the position at the client by interpolation. The opponent paddle is also interpolated 200ms to 100ms in the past, because the server is broadcasting snapshots every 100ms to each client. So far it works very well, but now I have to simulate the ball and have a problem to understanding the procedure. I’ve read Valve’s (and many other) articles about fast-paced multiplayer several times and understood their approach. Maybe I can compare my ball with their bullets, but their advantage is, the bullets are not visible. When I have to display the ball, and see my paddle in the present, the opponent in the past and the server is somewhere between it, how can I synchronize the ball over all instances and ensure, that it got ever hit by the paddle even if the paddle is fast moving? Currently my ball’s position is simply set by a server update, so it can happen, that the ball bounces back, even if the paddle is some pixel away (because of a delayed server position). Until now I’ve got no synced clock over all instances. I’m sending a client step index with each update to the server. If the server did his job, he sends the snapshot with the last step index of each client back to the clients. Now I’m looking for the stored position at the returned step index and compare them. Do I need a common clock to sync the ball? EDIT: I've tried to sync a common clock for the server and all clients with a timestamp. But I think it's better to use an own stepping instead of a timestamp (so I don't need to calculate with the ping and so on - and the timestamp will never be exact). The physics are running 60 times per second and now I use this for keeping them synchronized. Is that a good way? When the ball gets calculated by each client, the angle after bouncing can differ because of the different position of the paddles (the opponent is 200ms in the past). When the server is sending his ball position, velocity and angle (because he knows the position of each paddle and is authoritative), the ball could be in a very different position because of the different angles after bouncing (because the clients receive the server data after 100ms). How is it possible to interpolate such a huge difference? I posted this question some days ago at stackoverflow, but got no answer yet. Maybe this is the better place for this question.

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  • what would be a good way to implement/render a 2d tiled map for a browser game?

    - by jj_
    I've made this little rpg ruby game I did while learning and now I'd like to make it into a browser game. I've already set up Sinatra framework to serve it, so what I am looking for, before everything else, is a way to represent the game map in browser (location attributes are stored in db). A new map is randomly generated by code for each new game at each game start. For now forget db, and let's say a map (say 100x100 "squares") is stored as a tridimensional array. (x,y, ...) Last "dimension" of array stores who & what is at that map cell: a player, a building, whatever. So all I have to do is render those "squares" or array cells to a 2d tiled map in the browser. The map does not need to refresh or be dynamically fetched as you scroll it, (at least at this stage of development) but, a technology which would allow me to do so in future would be a good reason for choosing it. Things that I thought of: html tables, html5 canvas, some js framework which is designed exactly with this purpose (which I do not know of = please advice). Yes I know about gamequery-js framework, but I've never used it, and I don't know if it's going to slow down everything down to inusability as I'm adding new features (scrolling, ajax). I really don't know of any other alternatives.. maybe there are lighter approaches? Easier or more minimalistic ways ? More targeted js framework which is the right tool for the job? Maybe just some html canvas code, or even simple image maps, or images with absolute positioning will be enough? The thing is I'd like to start simple, and then gradually make it better, so, as I said before, I'd prefer something that will give me room for improvement or is headed toward new web tendencies but which will also give me a bit of gratification in the beginning :) So.. advices are needed! And appreciated! :) Thanks p.s. Flash is excluded because I don't like it.

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