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• Android Dynamic 2D Map

  - by Deltharis

  My problem is, I want to create a 2D tiled map. Yes, I know it's been asked a lot. I've seen answers that propose the use of tiled however it only allows (or so it seems to me) to generate static maps that do not change once generated. And I need a large empty uniform space of empty tiles, upon which players may place various buildings (some spanning more than one tile and logically being the same one). How to approach this in Android? Do I make some kind of TableLayout, use arbitrarly large amount of rows and imageviews (with my emptyTile), than somehow work event-based changing of image ids from there? I'd think that only a portion of that map should be visible at a time, but I don't see how scrolling around could be the part of that structure.

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• PLS HELP!!How to boot windows 7 after installing ubuntu 12.10?

  - by user113553

  Im new to linux and im interested in learning it so I installed ubuntu 12.10 yesterday. Installation went smoothly and i chose "install alongside windows option" and I set about 50 gb using that slider and i tot i used 50 gb from c: drive but to my shock it used 50 gb space from f: drive. This was my first shock.Then when i restarted n tried to log into windows, nothing happened a black screen appeared saying "To restart press alt+ctrl+delete" but even pressing that it wont restart. No matter how many times i try rebooting windows is not booting same black screen saying restart appears. But i can log in to ubuntu and i can see that windows c: drive is fine. PLEASE HELP ME!!!!

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• Core i7 with 4GB - go 64 bit or stay 32bit..?

  - by tommed

  I have a Core i7 laptop with 4gb ram. In windows, the disadvantage of using the 32bit OS would be that a single app could not use more than 2gb of ram (+ the 2gb shared kernel-space memory) except when setting a boot switch which reduces the amount of shared kernel memory, then it's 3GB max per app. What disadvantages/limitations would I have in Ubuntu for sticking to the 32bit OS? (If any?) - As I only have 4GB of ram, I can't see why I need to use the 64bit version?

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• writing an autopilot for a 2d game with newtonian physics

  - by Jargo

  The subject says it all. I am making a 2d space game with newtonian physics and I need pointers on how to write an autopilot for it. The requirements are best explained by an example. There is a target object which has speed- and position-vectors and there a spaceship that is controlled by the autopilot. This spaceship also have speed, position and maximum acceleration. The autopilot needs to control the ship that it either collides with the target, Or intercepts the target so that the ship has matching speed and position with the target. Could someone give me some pointers how to achieve this behavior or perhaps even an ready implementation? I am sure someone has written something like this before and there is no point in reinventing the wheel.

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• Coding with laptop and external screen - neck, back, comfort ...

  - by Xorty

  Guess I'm not the only one here coding on laptop + external keyboard + external screen. I can't really decide. Figure 1: Putting screen directly in front of (upright) my eyes and move laptop to the side. That feels like more comfortable but I can't really see so good to 15" laptop which is now quite away. Feels unused. Figure 2: Putting laptop in front of me and move external monitor on side. Feels like more efficient space usage, but I am afraid that my neck/back might start hurting since I need to turn my head often. What do you prefer? Some good advice? Sacrificing health is definitely no option here so that's why I'm worried and asking this silly question. Thanks

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• Learning to program without a computer

  - by ribrdb

  I have a friend in prison who wants to learn to program. He's got no access to a computer so I was wondering if people could recommend books that would be a good introduction to programming without requiring a computer. Obviously he's going to need to keep learning once he gets out and has access to a computer, but how should he get started now (he's got lots of free time to read). Based on his goals I think ruby or javascript/html5 might be good paths for him to start down, but really for now it's most important to explain the ideas. Even if it's all pseudocode. These need to be physical publications, paperbacks are preferred, and consider that he's got limited shelf space so large books could be a problem.

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• Disable new invisible border feature? (ruins compiz grid)

  - by Ike

  A new feature was added recently that adds an invisible border around the windows to grab for resizing (although i thought the new resize grip solved any big issues). This annoys me because it destroys the usefulness of the grid plugin of compiz.. i'm not sure if the border is part of compiz or gnome, but i'd like to know how to disable it. i couldn't find any options in ccsm or the window settings in gnome. See the screenshot to see how much waste is caused. These windows should match up instead of having blank space surrounding all of them.

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• Have windows key (meta) trigger Gnome-do instead of Unity Dash (12.04)

  - by Jason O'Neil

  On my laptop the Unity Dash often launches really slowly. I might press the Windows button, and sometimes it will take up to 15 seconds to open, and the system becomes unresponsive during this time. This is especially likely if I haven't opened the launcher in a few hours. I have Gnome-Do installed, and I currently launch it with "Ctrl + Space", and it launches instantly and is very responsive. I would like to swap my shortcut keys, so Meta (the Windows key) launches Gnome Do, but I can't figure out where to change the keyboard shortcut for the dash. Any clues?

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• How to install all versions (stable/beta/unstable) of Google Chrome side by side without conflicts?

  - by sobi3ch

  I have the stable version of Google Chrome on my box. And each time I'm trying to install beta or/and unstable versions then I run into the same problem: The following packages will be REMOVED google-chrome-stable The following NEW packages will be installed google-chrome-beta 0 upgraded, 1 newly installed, 1 to remove and 0 not upgraded. Need to get 34.5 MB of archives. After this operation, 3,109 kB of additional disk space will be used. Do you want to continue [Y/n]? I need to remove the first version before installing another. I know I can't install existing packages side by side but I'm looking for solution not for answer like: "You can't do it", I already know I can not. So in summary my question is: How can I install all Google Chrome versions next to each other? (There needs to be a way..)

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• SQLSaturday # 286 - Louisville, KY

  Join SQL Server MVP Grant Fritchey and other SQL Server professionals for a free day of training and networking at SQL Saturday Louisville, June 21. This is a free event, however there are also two paid-for precons available, run by Grant Fritchey and David Fackler. Register for SQL Sat while space is available. 24% of devs don’t use database source control – make sure you aren’t one of themVersion control is standard for application code, but databases haven’t caught up. So what steps can you take to put your SQL databases under version control? Why should you start doing it? Read more to find out…

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• ASP.NET Pivot Grid: How To Enable Compact Layout Feature

  Check out this short ASPxPivotGrid video that shows you how to enable the new compact layout mode: The new compact layout mode helps you save space. And its easy to setup. Watch the short ASPxPivotGrid Compact Layout video and then drop me a line here with your thoughts. Thanks. DXperience? What's That? DXperience is the .NET developer's secret weapon. Get full access to a complete suite of professional components that let you instantly drop in new features, designer styles...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Personal Activity Monitor tracks time you spend using desktop apps

  Up until a couple of years ago, I used to turn to RescueTime to figure out how I spend my time online. Then it got too complex, and I stopped using it. Personal Activity Monitor is like a vastly dumbed-down version of RescueTime, and I mean that as a compliment. It's free and bare-bones -- all it does is track what applications you're using and for how long. A big drawback at this point is that it doesn't integrate with Web browsers to help you analyze how you spend your time on the Web. Still, if your work doesn't require constant Web app use, knowing how long you've used a browser overall might be enough to help you manage your time. This is far from the only application in this space -- alternatives such as Slife and Chrometa are full-featured and impressive -- but PAM is good option for those who want a nice, simple tracker.Personal Activity Monitor tracks time you spend using desktop apps originally appeared on Download Squad on Sat, 05 Mar 2011 10:00:00 EST. Please see our terms for use of feeds.Permalink | Email this | Comments

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• OpenGLES 2.0 gluunProject

  - by secheung

  I've spent more time than i should trying to get my ray picking program working. I'm pretty convinced my math is solid with respect to line plane intersection, but I believe the problem lies with the changing of the mouse screen touch into 3D world space. Heres my code public void passTouchEvents(MotionEvent e){ int[] viewport = {0,0,viewportWidth,viewportHeight}; float x = e.getX(), y = viewportHeight - e.getY(); float[] pos1 = new float[4]; float[] pos2 = new float[4]; GLU.gluUnProject( x, y, 0.0f, mViewMatrix, 0, mProjectionMatrix, 0, viewport, 0, pos1, 0); GLU.gluUnProject( x, y, 1.0f, mViewMatrix, 0, mProjectionMatrix, 0, viewport, 0, pos2, 0); } Just as a reference I've tried transforming the coordinates 0,0,0 and got an offset. It would be appreciated if you would answer using opengl es 2.0 code. Thanks

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• What is Rails way to save images?

  - by user

  I develop on iOS, and I'm switching from a PHP backend to Ruby on Rails. The interchange format is JSON. A quick Google search for 'save images in Rails' has nearly every result talking about saving image data as blobs to the database. I might be mistaken, but I'm under the impression that saving image data in a database is a huge waste of time and space (as opposed to saving a link to the file location ('/img/subcat/4656.png'). In PHP, it's pretty standard to receive the data, generate a filename, then save that file to disk, and then update the database with the image's location on disk. Is this the same for Rails, or is there some built-in ActiveRecord image functionality I'm not aware of?

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• SEO: Is promoting your backlinks a good strategy for improving search results for my site's name?

  - by user4394

  I run a website that's been around for about three years in the sports space. I am successfully ranking well for targeted keywords, but searching for the name of my site itself returns very poor results - it shows my site, its FB/Twitter, and then 15 pages of unrelated spam that happen to contain two words that, when combined, form my website's name. After that, my backlinks begin to show up spordically. As far as I can tell, I simply don't have enough backlinks and the backlinks I do have are ranked worse than the spam. (Site Explorer lists 200 external links to any page on our domain and 20 external links directly to the front page). To counter this, my strategy is to promote my backlinks so they get a better page rank than the spam. Does that make sense? Am I going in the right direction or should I just focus on getting more backlinks pointing directly to my site? Thanks in advance and I'd be happy to answer any questions I can (without giving away my site of course).

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• Can't boot to Ubuntu 11.10 after installation with Windows 7

  - by Tylor

  I just installed Ubuntu 11.10 on a machine with Windows 7 already installed. I want to setup the dualboot environment. I have a block of unallocated disk space at the end of the disk (some blog post suggested to do so). Then I started installing Ubuntu 11.10 on that part of disk. I installed the boot loader to /boot partition and the installation finished successfully. However, after installation, Ubuntu 11.10 doesn't show up on boot menu. Then I searched on Internet and I used EasyBCD to add a grub2 boot to boot menu. After this, the boot entry does show up in the boot menu, however it only boot into some sort of grub console. I tried many times, and it doesn't work. It looks like the boot loader is not properly installed? I only have one 1.5TB disk and the first 800GB is NTFS partition with Windows 7. Does this work?

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• How do I restore GRUB 2?

  - by uahug

  I upgraded my laptop with an SSD, moving my old HDD to where the DVD-drive was, so that I could have speed and storage. Now, I have reinstalled Ubuntu on the SSD, deleting all the partitions on the old HDD to make space for a data partition. But now the laptop doesn't even get to GRUB 2 if the HDD is plugged in! If I take it out, everything works, but as soon as I plug it in and retry to boot, I won't find GRUB. At first, I thought it was because of the boot order, but the order was OK: first the notebook hard drive (SSD) and then the CD/DVD drive (which in reality is the HDD). How can I fix it? Doing a simple grub-install /dev/sda doesn't work.. The SSD is sda, and the HDD is sdb.

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• Common light map practices

  - by M. Utku ALTINKAYA

  My scene consists of individual meshes. At the moment each mesh has its associated light map texture, I was able to implement the light mapping using these many small textures. 1) Of course, I want to create an atlas, but how do you split atlases to pages, I mean do you group the lm's of objects that are close to each other, and load light maps on the fly if scene is expected to be big. 2) the 3d authoring software provides automatic uv coordinates for each mesh in the scene, but there are empty areas in the texel space, so if I scale the texture polygons the texel density of each face wil not match other meshes, if I create atlas like that there will be varying lm resolution, how do you solve this, just leave it as it is, or ignore resolution ? Actually these questions also applies to other non tiled maps.

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• Depth Map resolution shifting

  - by user3669538

  the problem is with shadow mapping as you can see, actually it works fine but in a certain condition that the Depth Map size must be equal to the size of rendering buffer, I use an infinite directional light so if the window is 800x600 the depth map must be 800x600, and when i change the size of the shadow map to be 900x600 it starts to be shifted and when it's size be 1024x1024 it also shifts till it disappears the GLSL shadow function float calcShadow(sampler2D Dmap, vec4 coor){ vec4 sh = vec4((coor.xyz/coor.w),1); sh.z *= 0.9; return step(sh.z,texture2D(Dmap,sh.xy).r); } here's the result when it's the same size as the window Colored result & Depth Map and here's the shifted result, as you can notice the depth map is exactly as the previous one with the addition of white space to the right. Colored result http://goo.gl/5lYIFV Depth Map http://goo.gl/7320Dd

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• What Shading/Rendering techniques are being used in this image?

  - by Rhakiras

  My previous question wasn't clear enough. From a rendering point of view what kind of techniques are used in this image as I would like to apply a similar style (I'm using OpenGL if that matters): http://alexcpeterson.com/ My specific questions are: How is that sun glare made? How does the planet look "cartoon" like? How does the space around the planet look warped/misted? How does the water look that good? I'm a beginner so any information/keywords on each question would be helpful so I can go off and learn more. Thanks

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• Reduced Tree View in NetBeans IDE 7.2

  - by Geertjan

  Right-click within the Projects window in NetBeans IDE 7.2 and from the "View Java Packages As" menu, you can now choose "Reduced Tree".I never really understood the difference between "Reduced Tree" and the already existing "Tree". But it makes sense when you see it. Here's Reduced Tree view: And here's Tree view, where you can see that the "actions" and "nodes" packages above each have their own top level package nodes, which takes up more space than the above: What's cool is that your selected package view is persisted across restarts of the IDE. To be complete, here's the List view, which is the third option you have in the "View Java Packages As" menu: Seems to me like the new Reduced Tree view combines the best of the Tree view with the best of the List view! Related issue: http://netbeans.org/bugzilla/show_bug.cgi?id=53192

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• How to detect and collide two elastic line segments?

  - by Tautrimas

  There are 4 moving physical nodes in 3D space. They are paired with two elastic line segments / strings (1 <- 2; 3 <- 4). Part I: How to detect the collision of two segments? Part II: On the moment of collision, fifth node is created at the intersection point and here you have the force-based graph. 5-th node (bend point) can slide among the strings as in a real world. Given the new coordinates of 4 nodes, how to calculate the position of the 5-th node on the next frame? I assume string force on the nodes to be F = -k * x where x is the string length. All I came up to is that the force between 5 and 1 equals 5 and 2 (the same with 3 and 4). What are the other properties?.

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• In times where there are lot of cloud based hostings what would still make you go for dedicated or vps hosting ?

  - by Samyak Bhuta

  Are dedicated hosting yet cheaper and would remain so ? Do they really going to survive as cloud based offering are also getting cheaper day by day ? I am asking to gain perspective of long term scenario in hosting space as well as to know what is the current situation. Everywhere I go there is this buzzword "cloud" and audience don't even bother to compare it with dedicated hosting options. Is cloud really the way to go ahead ? what are it's cons ?

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• How secure is KeePassX?

  - by Uli

  I have hundreds of passwords, since I use a different random one for each website/service. They are all generated & stored with KeePassX, which can be synced to different computers and my android phone via dropbox (or ubuntuone). I know the database of KeePassX is secure (at least with a good passphrase). But what about when I am copying the password into the clipboard (where it is stored for 5 seconds)? Can any program running in user-space access the clipboard and store the password? If so, how big of a security risk is this?

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• Does an inventory limit in an MMORPG make sense?

  - by Philipp

  I am currently developing a simple 2d MMORPG. My current focus is the inventory system. I am currently wondering if I should implement a limit on what a player character can carry. Either in form of a maximum weight, a limited number of inventory slots, or a combination of both. Almost every MMORPG I ever played limits inventory space. But plausibility aside, is this really necessary from a gameplay point of view? Maybe it would in fact improve the game experience when I just let the players carry as much stuff as they want. tl;dr: What is the game development rationale behind limiting carrying capacity of player characters?

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