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  • Other games that employ mechanics like the game "Diplomacy"

    - by Kevin Peno
    I'm doing a little bit of research and I'm hoping you can help me track down any games, other than Diplomacy (online version here), that employ all or some of the mechanics in Diplomacy (rules, short form). Examples I'm looking for: Simultaneous orders given prior to execution of orders In Diplomacy, players "write down" their moves and execute them "at the same time" Support, in terms of supporting an attacker or defender "take" a territory. In Diplomacy, no one unit is stronger than another you need to combine the strength of multiple units to attack other territories. Rules for how move conflicts are resolved Example, 2 units move into a space, but only one is allowed, what happens. I may add to this list later, but these are the primary things I'm looking for. If you need clarification on anything just let me know. Note: I tried asking this on GamingSE, but it was shot down. So, I am unsure where else I could post this. Since I am researching this for game development purposes, I assume this post is on topic. Please let me know if this is not the case. Please also feel free to re-categorize this. Thanks!

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  • Using textureGrad for anisotropic integration approximation

    - by Amxx
    I'm trying to develop a real time rendering method using real time acquired envmap (cubemap) for lightning. This implies that my envmap can change as often as every frame and I therefore cannot use any method base on precomputation of the envmap (such as convolution with BRDF...) So far my method worked well with Phong BRDF. For specular contribution I direclty read the value in my sampleCube and I use mipmap levels + linear filter for simulating the roughtness of the material considered: int size = textureSize(envmap, 0).x; float specular_level = log2(size * sqrt(3.0)) - 0.5 * log2(ns + 1); vec3 env_specular = ks * specular_color * textureLod(envmap, l_g, specular_level); From this method I would like to upgrade to a microfacet based BRDF. I already have algorithm for evaluating the shape (including anisotropic direction) of the reflection but I cannot manage to read the values I want in my sampleCube. I believe I have to use textureGrad(envmap, l_g, X, Y); with l_g being the reflection direction in global space but I cannot manage to find which values to give to X and Y in order to correctly specify the area I want to consider. What value should I give to X and Y in orther for textureGrad(envmap, l_g, X, Y); to give the same result as textureLod(envmap, l_g, specular_level);

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  • 2D Tile Map files for Platformer, JSON or DB?

    - by Stephen Tierney
    I'm developing a 2D platformer with some uni friends. We've based it upon the XNA Platformer Starter Kit which uses .txt files to store the tile map. While this is simple it does not give us enough control and flexibility with level design. Some examples: for multiple layers of content multiple files are required, each object is fixed onto the grid, doesn't allow for rotation of objects, limited number of characters etc. So I'm doing some research into how to store the level data and map file. Reasoning for DB: From my perspective I see less redundancy of data using a database to store the tile data. Tiles in the same x,y position with the same characteristics can be reused from level to level. It seems like it would simple enough to write a method to retrieve all the tiles that are used in a particular level from the database. Reasoning for JSON: Visually editable files, changes can be tracked via SVN a lot easier. But there is repeated content. Do either have any drawbacks (load times, access times, memory etc) compared to the other? And what is commonly used in the industry? Currently the file looks like this: .................... .................... .................... .................... .................... .................... .................... .........GGG........ .........###........ .................... ....GGG.......GGG... ....###.......###... .................... .1................X. #################### 1 - Player start point, X - Level Exit, . - Empty space, # - Platform, G - Gem

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  • Nautilus header bar missing -- Ubuntu Gnome 13.10 (Gnome 3.10)

    - by user75252
    So, I recently did a fresh install of Ubuntu GNOME 13.10, added the gnome3-team/gnome3-next and gnome3-team/gnome3-staging PPA's, and upgraded to Gnome 3.10. (Also using a dual-monitor system, 1920 x 1080, Nvidia-319 driver.) Everything was running fine after the updates (including Nautilus, or "Files"), but when I opened Nautilus, at some point, the header bar was gone, and it got stuck in full-screen mode. The header is there for every other application, though. I can't resize Nautilus, I can't move it with the Alt+F7 hotkey. I can, however, make the sidebar disappear with F9 and make the program close with Alt+F4. I can also bring up the window menu with Alt+space, but the options to "resize" and "move" are greyed out, and the "Move Titlebar Onscreen" does nothing when clicked. Attempted solutions: I uninstalled, ran apt-get autoremove clean autoclean, and re-installed Nautilus, including any subsequent applications that were removed -- no fix. I installed and tried replacing the titlebar theme with Ambiance via Gnome Tweak Tool to at least restore the header/title bar -- no fix. I created a new user, logged into that, and opened Nautilus. It DID open up in the windowed mode with the header bar, but then, without my involvement, went to full-screen without the header bar. Same problem. Running "sudo nautilus" from the terminal does open it (full-screen, without header), but gives this error: (nautilus:7531): Gtk-WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files Here's a screenshot of the complete Nautilus dialog box:

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  • Convert mkv to mp4 with ffmpeg

    - by JohnS
    When I try converting mkv to mp4 using ffmpeg, the following error occurs: [ipod @ 0x16fa0a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: -2 = -2 av_interleaved_write_frame(): Invalid argument I used this command to convert the file: ffmpeg -i input.mkv -vcodec copy -acodec copy -absf aac_adtstoasc output.m4v The input file has the following characteristics: mediainfo input.mkv General Unique ID : 200459305952356554213392832683163418790 (0x96CF0ED8DB5914CBB9E18163689280A6) Complete name : input.mkv Format : Matroska Format version : Version 2 File size : 1.46 GiB Duration : 1h 5mn Overall bit rate : 3 168 Kbps Encoded date : UTC 2010-09-26 21:44:02 Writing application : mkvmerge v2.9.5 ('Tu es le seul') built on Jun 17 2009 16:28:30 Writing library : libebml v0.7.8 + libmatroska v0.8.1 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : [email protected] Format settings, CABAC : Yes Format settings, ReFrames : 4 frames Codec ID : V_MPEG4/ISO/AVC Duration : 1h 5mn Bit rate : 2 910 Kbps Width : 1 280 pixels Height : 720 pixels Display aspect ratio : 16:9 Frame rate : 25.000 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.126 Stream size : 1.31 GiB (90%) Writing library : x264 core 105 r1724 b02df7b Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=18 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=0 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc=2pass / mbtree=0 / bitrate=2910 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00 Default : Yes Forced : No Audio ID : 2 Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Codec ID : A_AC3 Duration : 1h 5mn Bit rate mode : Constant Bit rate : 256 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Stream size : 121 MiB (8%) Language : English Default : Yes Forced : No Being new to ffmpeg, I'm not sure what the error means or how to correct it. Thanks!

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  • Red Sand – An Awesome Fan Made Mass Effect Prequel [Short Movie]

    - by Asian Angel
    Welcome to Mars where humanity has just discovered the Prothean Ruins and Element Zero, but danger abounds as the Red Sand terrorist group seeks to claim Mars for themselves! If you love the Mass Effect game series, then you will definitely want to watch this awesome fan made prequel set 35 years before the events of the first game. Synopsis From YouTube: Serving as a prequel to the MASS EFFECT game series,”Red Sand” is set 35 years before the time of Commander Shepard and tells the story of the discovery of ancient ruins on Mars. Left behind by the mysterious alien race known as the Protheans, the ruins are a treasure trove of advanced technology and the powerful Element Zero, an energy source beyond humanity’s wildest dreams. As the Alliance research team led by Dr. Averroes (Ayman Samman) seeks to unlock the secrets of the ruins, a band of marauders living in the deserts of Mars wants the ruins for themselves. Addicted to refined Element Zero in the form of a narcotic nicknamed “Red Sand” which gives them telekinetic “biotic” powers, these desert-dwelling terrorists will stop at nothing to control the ruins and the rich vein of Element Zero at its core. Standing between them and their goal are Colonel Jon Grissom (Mark Meer), Colonel Lily Sandhurst (Amy Searcy), and a team of Alliance soldiers tasked with defending the ruins at all costs. At stake – the future of humanity’s exploration of the galaxy, and the set up for the MASS EFFECT storyline loved by millions of gamers worldwide. RED SAND: a Mass Effect fan film – starring MARK MEER [via Geeks are Sexy] 7 Ways To Free Up Hard Disk Space On Windows HTG Explains: How System Restore Works in Windows HTG Explains: How Antivirus Software Works

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  • Hack Apart a Highlighter to Create UV-Reactive Flowers [Science]

    - by ETC
    College students have long been hacking apart highlighters to create glowing bottles of booze to line their dorm room walls. Far more interesting, however, is the application of the hack to flowers. Many of you may remember a science class experiment from years gone by where in you put food coloring in a beaker and then some freshly cut white flowers; returning to the experiment a day later yielded flowers colored to match the dye you added. This little experiment relies on the same technique, only instead of blue food coloring the flowers suck up UV-reactive highlighter dye. Check out the video below to see the experiment in action: Have a fun science experiment to share? Let’s hear about it in the comments. Make Flowers Glow in the Dark (with Highlighter Fluid and UV Light) [YouTube via Make] Latest Features How-To Geek ETC Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? 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 Hack Apart a Highlighter to Create UV-Reactive Flowers [Science] Add a “Textmate Style” Lightweight Text Editor with Dropbox Syncing to Chrome and Iron Is the Forcefield Really On or Not? [Star Wars Parody Video] Google Updates Picasa Web Albums; Emphasis on Sharing and Showcasing Uwall.tv Turns YouTube into a Video Jukebox Early Morning Sunrise at the Beach Wallpaper

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  • Converting to and from local and world 3D coordinate spaces?

    - by James Bedford
    Hey guys, I've been following a guide I found here (http://knol.google.com/k/matrices-for-3d-applications-view-transformation) on constructing a matrix that will allow me to 3D coordinates to an object's local coordinate space, and back again. I've tried to implement these two matrices using my object's look, side, up and location vectors and it seems to be working for the first three coordinates. I'm a little confused as to what I should expect for the w coordinate. Here are couple of examples from the print outs I've made of the matricies that are constructed. I'm passing a test vector of [9, 8, 14, 1] each time to see if I can convert both ways: Basic example: localize matrix: Matrix: 0.000000 -0.000000 1.000000 0.000000 0.000000 1.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 5.237297 -45.530716 11.021271 1.000000 globalize matrix: Matrix: 0.000000 0.000000 1.000000 0.000000 -0.000000 1.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 -11.021271 -45.530716 -5.237297 1.000000 test: Vector4f(9.000000, 8.000000, 14.000000, 1.000000) localTest: Vector4f(14.000000, 8.000000, 9.000000, -161.812256) worldTest: Vector4f(9.000000, 8.000000, 14.000000, -727.491455) More complicated example: localize matrix: Matrix: 0.052504 -0.000689 -0.998258 0.000000 0.052431 0.998260 0.002068 0.000000 0.997241 -0.052486 0.052486 0.000000 58.806095 2.979346 -39.396252 1.000000 globalize matrix: Matrix: 0.052504 0.052431 0.997241 0.000000 -0.000689 0.998260 -0.052486 0.000000 -0.998258 0.002068 0.052486 0.000000 -42.413120 5.975957 -56.419727 1.000000 test: Vector4f(9.000000, 8.000000, 14.000000, 1.000000) localTest: Vector4f(-13.508600, 8.486917, 9.290090, 2.542114) worldTest: Vector4f(9.000190, 7.993863, 13.990230, 102.057129) As you can see in the more complicated example, the coordinates after converting both ways loose some precision, but this isn't a problem. I'm just wondering how I should deal with the last (w) coordinate? Should I just set it to 1 after performing the matrix multiplication, or does it look like I've done something wrong? Thanks in advance for your help!

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  • Does TDD really work for complex projects?

    - by Amir Rezaei
    I’m asking this question regarding problems I have experienced during TDD projects. I have noticed the following challenges when creating unit tests. Generating and maintaining mock data It’s hard and unrealistic to maintain large mock data. It’s is even harder when database structure undergoes changes. Testing GUI Even with MVVM and ability to test GUI, it takes a lot of code to reproduce the GUI scenario. Testing the business I have experience that TDD works well if you limit it to simple business logic. However complex business logic is hard to test since the number of combinations of tests (test space) is very large. Contradiction in requirements In reality it’s hard to capture all requirements under analysis and design. Many times one note requirements lead to contradiction because the project is complex. The contradiction is found late under implementation phase. TDD requires that requirements are 100% correct. In such cases one could expect that conflicting requirements would be captured during creating of tests. But the problem is that this isn’t the case in complex scenarios. I have read this question: Why does TDD work? Does TDD really work for complex enterprise projects, or is it practically limit to project type?

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  • Collision detection on a 2D hexagonal grid

    - by SundayMonday
    I'm making a casual grid-based 2D iPhone game using Cocos2D. The grid is a "staggered" hex-like grid consisting of uniformly sized and spaced discs. It looks something like this. I've stored the grid in a 2D array. Also I have a concept of "surrounding" grid cells. Namely the six grid cells surrounding a particular cell (except those on the boundries which can have less than six). Anyways I'm testing some collision detection and it's not working out as well as I had planned. Here's how I currently do collision detection for a moving disc that's approaching the stationary group of discs: Calculate ij-coordinates of grid cell closest to moving cell using moving cell's xy-position Get list of surrounding grid cells using ij-coordinates Examine the surrounding cells. If they're all empty then no collision If we have some non-empty surrounding cells then compare the distance between the disc centers to some minimum distance required for a collision If there's a collision then place the moving disc in grid cell ij So this works but not too well. I've considered a potentially simpler brute force approach where I just compare the moving disc to all stationary discs at each step of the game loop. This is probably feasible in terms of performance since the stationary disc count is 300 max. If not then some space-partitioning data structure could be used however that feels too complex. What are some common approaches and best practices to collision detection in a game like this?

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  • Wine / PlayOnLinux dependency issues when trying to install

    - by Glutanimate
    I am curious as to why installing PlayOnLinux entails removing seemingly unrelated packages like google-earth-stable. Is this the expected behaviour? This is the output I get when trying to install playonlinux through apt-get: The following packages were automatically installed and are no longer required: python-scour pax ncurses-term Use 'apt-get autoremove' to remove them. The following extra packages will be installed: binfmt-support fonts-horai-umefont fonts-unfonts-core libcapi20-3 libgif4:i386 libmpg123-0 libodbc1 libpam-winbind ttf-umefont ttf-unfonts-core unixodbc winbind wine wine-gecko1.4 wine-gecko1.4:i386 wine1.4 wine1.4-amd64 wine1.4-common wine1.4-i386:i386 winetricks Suggested packages: libmyodbc odbc-postgresql tdsodbc unixodbc-bin dosbox Recommended packages: gettext:i386 unixodbc:i386 The following packages will be REMOVED: alien cdbs debhelper dh-make dh-translations gettext google-earth-stable intltool intltool-debian lsb-core po-debconf The following NEW packages will be installed: binfmt-support fonts-horai-umefont fonts-unfonts-core libcapi20-3 libgif4:i386 libmpg123-0 libodbc1 libpam-winbind playonlinux ttf-umefont ttf-unfonts-core unixodbc winbind wine wine-gecko1.4 wine-gecko1.4:i386 wine1.4 wine1.4-amd64 wine1.4-common wine1.4-i386:i386 winetricks 0 upgraded, 21 newly installed, 11 to remove and 0 not upgraded. Need to get 145 MB of archives. After this operation, 275 MB of additional disk space will be used. This is the first time I am trying to install Wine / POL. I am using the default repositories, no Wine PPA or POL source added. These are all the PPAs I am using: How do I install POL / Wine without having to remove all these packages?

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  • Encrypting a non-linux partition with LUKS.

    - by linuxn00b
    I have a non-Linux partition I want to encrypt with LUKS. The goal is to be able to store it by itself on a device without Linux and access it from the device when needed with an Ubuntu Live CD. I know LUKS can't encrypt partitions in place, so I created another, unformatted partition of the EXACT same size (using GParted's "Round to MiB" option) and ran this command: sudo cryptsetup luksFormat /dev/xxx Where xxx is the partition's device name. Then I typed in my new passphrase and confirmed it. Oddly, the command exited immediately after, so I guess it doesn't encrypt the entire partition right away? Anyway, then I ran this command: sudo cryptsetup luksOpen /dev/xxx xxx Then I tried copying the contents of the existing partition (call it yyy) to the encrypted one like this: sudo dd if=/dev/yyy of=/dev/mapper/xxx bs=1MB and it ran for a while, but exited with this: dd: writing `/dev/mapper/xxx': No space left on device just before writing the last MB. I take this to mean the contents of yyy was truncated when it was copied to xxx, because I have dd'd it before, and whenever I have dd'd to a partition of the exact same size, I never get that error. (and fdisk reports they are the same size in blocks). After a little Googling I discovered all luksFormat'ted partitions have a custom header followed by the encrypted contents. So it appears I need to create a partition exactly the size of the old one + however many bytes a LUKS header is. What size should the destination partition be, no. 1, and no. 2, am I even on the right track here? UPDATE I found this in the LUKS FAQ: I think this is overly complicated. Is there an alternative? Yes, you can use plain dm-crypt. It does not allow multiple passphrases, but on the plus side, it has zero on disk description and if you overwrite some part of a plain dm-crypt partition, exactly the overwritten parts are lost (rounded up to sector borders). So perhaps I shouldn't be using LUKS at all?

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  • SQL SERVER – Finding Size of a Columnstore Index Using DMVs

    - by pinaldave
    Columnstore Index is one of my favorite enhancement in SQL Server 2012. A columnstore index stores each column in a separate set of disk pages, rather than storing multiple rows per page as data traditionally has been stored. In case of the row store indexes multiple pages will contain multiple rows of the columns spanning across multiple pages. Whereas in case of column store indexes multiple pages will contain (multiple) single columns.  Columnstore Indexes are compressed by default and occupies much lesser space than regular row store index by default. One of the very common question I often see is need of the list of columnstore index along with their size and corresponding table name. I quickly re-wrote a script using DMVs sys.indexes and sys.dm_db_partition_stats. This script gives the size of the columnstore index on disk only. I am sure there will be advanced script to retrieve details related to components associated with the columnstore index. However, I believe following script is sufficient to start getting an idea of columnstore index size.  SELECT OBJECT_SCHEMA_NAME(i.OBJECT_ID) SchemaName, OBJECT_NAME(i.OBJECT_ID ) TableName, i.name IndexName, SUM(s.used_page_count) / 128.0 IndexSizeinMB FROM sys.indexes AS i INNER JOIN sys.dm_db_partition_stats AS S ON i.OBJECT_ID = S.OBJECT_ID AND I.index_id = S.index_id WHERE  i.type_desc = 'NONCLUSTERED COLUMNSTORE' GROUP BY i.OBJECT_ID, i.name Here is my introductory article written on SQL Server Fundamentals of Columnstore Index. Create a sample columnstore index based on the script described in the earlier article. It will give the following results. Please feel free to suggest improvement to script so I can further modify it to accommodate enhancements. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Index, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: ColumnStore Index

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  • What You Said: How Do You Sync Your Files Between Your Devices?

    - by Jason Fitzpatrick
    Earlier this week we asked you to share your tricks and techniques for keeping files synced between your different devices. Now we’re back to highlight how you do it. Overwhelmingly, you do it with Dropbox. Despite the proliferation of different platforms there has been little inroads made into any sort of universal syncing. We heard from quite a few different readers and by far the most popular option was to use Dropbox to ensure that you could get the music and documents you wanted whether you were on your desktop, laptop, netbook, iPhone, or Android device. In the same breath however, nearly all of your added on an additional service. The real message, it would seem, is that there simply isn’t a service good enough to meet all of the needs most users have, all of the time. The most common response to our Ask the Readers question was “Dropbox and…”; this pattern is illustrated nicely in the following quotes. Kim writes: Dropbox for all kinds of things. (Would also use Sugarsync, but it doesn’t support Linux.) Lastpass for passwords. Xmarks for bookmarks, although I’m going to try Firefox Sync soon. Evernote for things like shell commands I might want someday. Google Beta for music, once I get it uploaded. I have an Amazon account too, but Google gives you more space. Gmail. Michael finds himself in a similar situation and writes: How to Make and Install an Electric Outlet in a Cabinet or DeskHow To Recover After Your Email Password Is CompromisedHow to Clean Your Filthy Keyboard in the Dishwasher (Without Ruining it)

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  • Guidance for Web XML Api's

    - by qstarin
    I have to create an API for our application that is accessible over HTTP. I envision the API's responses to be simple XML documents. It won't be a REST API (not in the strict sense of REST). I am fairly new to this space - of course I've had to consume some Web API's in my work, but often they are already wrapped in language native libraries (i.e., TweetSharp). I'm looking for information to guide the design of an API. Are there any articles, blog posts, etc. that review and expound upon the design choices to be made in a Web API? Design choices would be things like how to authenticate, URL structure, when users submit should the URL they POST to determine the action being performed or should all requests go to a common URL and some part of the POST'd data is responsible for routing to a command, should all responses have the same document root or should errors have a different root, etc., etc. Ideally, such articles or blog posts would enumerate through the common variations for any given point of design and expound on the advantages and disadvantages, such that they would inform me to make my own decision (as opposed to articles that simply explain one single way to do something). Does anyone have any links or wisdom they can share?

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  • HTG Explains: Just How Bad Are Android Tablet Apps?

    - by Chris Hoffman
    Apple loves to criticize the state of Android tablet apps when pushing its own iPad tablets. But just how bad is the Android tablet app situation? Should you avoid Android tablets like the Nexus 7 because of the apps? It’s clear that Apple’s iPad is way ahead when it comes to the sheer quantity of tablet-optimized apps. It’s also clear that some popular apps — particularly touch-optimized games — only show up on iPad. But that’s not the whole story. The Basics First, let’s get an idea of the basic stuff that will work well for you on Android. An excellent web browser. Chrome has struggled with performance on Android, but hits its stride on the Nexus 7 (2013). Great, tablet-optimized apps for all of Google’s services, from YouTube to Gmail and Google Maps. Everything you need for reading, from Amazon’s Kindle app for eBooks, Flipboard and Feedly for new articles from websites, and other services like the popular Pocket read-it-later service. Apps for most popular media services, from Netflix, Hulu, and YouTube for videos to Pandora, Spotify, and Rdio for music. A few things aren’t available — you won’t find Apple’s iTunes and Amazon still doesn’t offer an Amazon Instant Video app for Android, while they do for iPad and even their own Android-based Kindle Fire devices. Android has very good app coverage when it comes to consuming content, whether you’re reading websites and ebooks or watching videos and listening to music. You can play almost any Android smartphone game, too. For content consumption, Android is better than something like Windows 8, which lacks apps for Google services like YouTube and still doesn’t have apps for popular media services like Spotify and Rdio. How Android Scales Smartphone Apps Let’s look at how Android scales smartphone apps. Now, bear with us here — we know “scaling” is a dirty word considering how poorly Apple’s iPad scales iPhone apps, but it’s not as bad on Android. When an iPad runs an iPhone app, it simply doubles the pixels and effectively zooms in. For example, if you had  Twitter app with five tweets visible at once on an iPhone and ran the same app on an iPad, the iPad would simply “zoom in” and enlarge the same screen — you’d still see five tweets, but each tweet would appear larger. This is why developers create optimized iPad apps with their own interfaces. It’s especially important on Apple’s iOS. Android devices come in all shapes and sizes, so Android apps have a smarter, more intelligent way to adapt to different screen sizes. Let’s say you have a Twitter app designed for smartphones and it only shows five tweets at once when run on a phone. If you ran the same app on a tablet, you wouldn’t see the same five tweets — you’d see ten or more tweets. Rather than simply zooming in, the app can show more content at the same time on a tablet, even if it was never optimized for tablet-size screens. While apps designed for smartphones aren’t generally ideal, they adapt much better on Android than they do on an iPad. This is particularly true when it comes to games. You’re capable of playing almost any Android smartphone game on an Android tablet, and games generally adapt very well to the larger screen. This gives you access to a huge catalog of games. It’s a great option to have, especially when you look at Microsoft’s Window 8 and consider how much better the touch-based app and game selection would be if Microsoft allowed its users to run Windows Phone games on Windows 8. 7-inch vs 10-inch Tablets The Twitter example above wasn’t just an example. The official Twitter app for Android still doesn’t have a tablet-optimized interface, so this is the sort of situation you’d have to deal with on an Android tablet. On the popular Nexus 7, Twitter is an example of a smartphone app that actually works fairly well — in portrait mode, you can see many more tweets on screen at the same time and none of the space really feels all that wasted. This is important to consider — smartphone apps like Twitter often scale quite well to 7-inch screens because a 7-inch screen is much closer in form factor to a smartphone than a 10-inch screen is. When you begin to look at 10-inch Android tablets that are the same size as an iPad, the situation changes. While the Twitter app works well enough on a Nexus 7, it looks horrible on a Nexus 10 or other 10-inch tablet. Running many smartphone-designed apps — possible with the exception of games — on a 10-inch tablet is a frustrating, poor experience. There’s much more white, empty space in the interface. It feels like you’re using a smartphone app on a large screen, and what’s the point of that? A tablet-optimized Twitter app for Android is finally on its way, but this same situation will repeat with many other types of apps. For example, Facebook doesn’t offer a tablet-optimized interface, but it’s okay on a Nexus 7 anyway. On a 10-inch screen, it probably wouldn’t be anywhere near as nice an experience. It goes without saying that Facebook and Twitter both offer iPad apps with interfaces designed for a tablet-size screen. Here’s another problematic app — the official Yelp app for Android. Even just using it on a 7-inch Nexus 7 will be a poor experience, while it would be much worse on a larger 10-inch tablet app. Now, it’s true that many — maybe even most — of the popular apps you might want to run today are optimized for Android tablets. But, when you look at the situation when it comes to popular apps like Twitter, Facebook, and Yelp, it’s clear Android is still behind in a meaningful way. Price Let’s be honest. The thing that really makes Android tablets compelling — and the only reason Android tablets started seeing real traction after years of almost complete dominance by Apple’s iPads — is that Android tablets are available for so much cheaper than iPads. Google’s latest Nexus 7 (2013) is available for only $230. Apple’s non-retina iPad Mini is available at $300, which is already $70 more. In spite of that, the iPad Mini has much older, slower internals and a much lower resolution screen. It’s not as nice to look at when it comes to reading or watching movies, and the iPad Mini reportedly struggles to run Apple’s latest iOS 7. In contrast, the new Nexus 7 has a very high resolution screen, speedy internals, and runs Android very well with little-to-no lag in real use. We haven’t had any problems with it, unlike all the problems we unfortunately encountered with the first Nexus 7. For a really comparable experience to the current Nexus 7, you’d want to get one of Apple’s new retina iPad Minis. That would cost you $400, another $170 over the Nexus 7. In fact, it’s possible to regularly find sales on the Nexus 7, so if you waited you could get it for just $200 — half the price of the iPad mini with a comparable screen and internals. (In fairness, the iPad certainly has better hardware — but you won’t feel if it you’re just using your tablet to browse the web, watch videos, and do other typical tablet things.) This makes a tablet like the popular Nexus 7 a very good option for budget-conscious users who just want a high-quality device they can use to browse the web, watch videos, play games, and generally do light computing. There’s a reason we’re focusing on the Nexus 7 here. The combination of price and size brings it to a very good place. It’s awfully cheap for the high-quality experience you get, and the 7-inch screen means that even the non-tablet-optimized apps you may stumble across will often work fairly well. On the other hand, more expensive 10-inch Android tablets are still a tougher sell. For $400-$500, you’re getting awfully close to Apple’s full-size iPad price range and Android tablets don’t have as good an app ecosystem as an iPad. It’s hard to recommend an expensive, 10-inch Android tablet over a full-size iPad to average users. In summary, the Android app tablet app situation is nowhere near as bad as it was a few years ago. The success of the Nexus 7 proves that Android tablets can be compelling experiences, and there are a wide variety of strong apps. That said, more expensive 10-inch Android tablets that compete directly with the full-size iPad on price still don’t make much sense for most people.  Unless you have a specific reason for preferring an Android tablet, it’s tough not to recommend an iPad if you’re looking at spending $400+ on a 10-inch tablet. Image Credit: Christian Ghanime on Flickr, Christian Ghanime on Flickr     

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  • links for 2011-02-22

    - by Bob Rhubart
    Eleven BI trends for 2011 | ITWeb Business Intelligence (tags: ping.fm) The Buttso Blathers: WebLogic Schema Files Buttso shares a link. (tags: orale weblogic) Cloud Computing & Enterprise Architecture | Open Group Blog "On the first look, it may seem like Enterprise Architecture is irrelevant in a company if your complete IT is running on Cloud Computing, SaaS and outsourcing/offshoring. I was of the same opinion last year. However, it is not the case. In fact, the complexity is going to get multiplied." (tags: opengroup cloud enterprisearchitecture) James Taylor: Change Logging Level for SOA 11g James says: "I’m sure there are many blogs out there that have this solution. But I seem to get asked this question a lot so I thought I would post it here for my convenience. (tags: oracle middleware soa) David Linthicum: The Truth behind Standards, SOA, and Cloud Computing "Most of the standards we've worked on in the world of SOA over the past several years are applicable to the world of cloud computing. Cloud computing is simply a change in platform, and the existing architectural standards we leverage should transfer nicely to the cloud computing space." - David Linthicum (tags: enterprisearchitecture soa cloud) C. Martin Harris, MD: HIMSS11 Update from the Chairman "We cannot allow ourselves to focus exclusively on near term goals. Our real goal is a technology-driven transformation of healthcare that will never stop. A true transformation is a process of lessons learned and applied, that continually open broad new horizons of opportunity." - C. Martin Harris, MD (tags: enterprisearchitecture modernization)

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  • Why not to use StackTrace to find what method called you

    - by Alex.Davies
    Our obfuscator, SmartAssembly, does some pretty crazy reflection. It's an obfuscator, it's sort of its job to do things in the most awkward way possible. But sometimes, you can go too far. One such time is this little gem from the strings encoding feature: StackTrace stackTrace = new StackTrace(); StackFrame frame = stackTrace.GetFrame(1); Type ownerType = frame.GetMethod().DeclaringType; It's designed to find the type where the calling method is defined. A user found that strings encoding occasionally broke on x64 systems. Very strange. After some debugging (thank god for Reflector Pro, it would be impossible to debug processed assemblies without it) I found that the ownerType I got back was wrong. The reason is that the x64 JIT does tail call optimisation. This saves space on the stack, and speeds things up, by throwing away a method's stack frame if the last thing that it calls is the only thing returned. When this happens, the call to StackTrace faithfully tells you that the calling method is the one that called the one we really wanted. So using StackTrace isn't safe for anything other than debugging, and it will make your code fail in unpredictable ways. Don't use it!

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  • N64oid Brings N64 Emulation to Android Devices

    - by ETC
    Craving some Ocarina of Time adventures, Super Mario 64 antics, or some Star Fox 64 flying on your Android device? N64oid brings retro emulation of Nintendo’s popular N64 console to Android devices. N64oid is an N64 console emulator for Android devices. You’ll need a copy of the $5.99 emulator, ROMs (from the usual sources, unless you’ve got a ROM ripping setup in your basement and a stack of old cartridges), and a suitably speedy Android device. Older Android devices will find the playback choppy and subpar, but newer and speedier devices like the Nexus-One and Samsung Galaxy should have no problem handling the emulator. Like all emulators N64oid is a work in progress and emulating an entire closed-system console on a totally different set of hardware is never a perfect 1:1 emulation, but if you’re a die hard fan of classic N64 titles (check out this list of top ranked titles to inspire some nostalgia) N64oid is worth the price of a burger for sure. N64oid [Android Market via Download Squad] Latest Features How-To Geek ETC Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? 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 Super-Charge GIMP’s Image Editing Capabilities with G’MIC [Cross-Platform] Access and Manage Your Ubuntu One Account in Chrome and Iron Mouse Over YouTube Previews YouTube Videos in Chrome Watch a Machine Get Upgraded from MS-DOS to Windows 7 [Video] Bring the Whole Ubuntu Gang Home to Your Desktop with this Mascots Wallpaper Hack Apart a Highlighter to Create UV-Reactive Flowers [Science]

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  • How to Clean Up and Fix Your Music Library with the MusicBrainz Database

    - by Erez Zukerman
    Over the years, some of us accumulate lots and lots of music files. Since these come from a variety of sources, they’re not always as neat as they could be. If your music library is in a bit of a jumble with tags missing, oddly named files and incomplete albums, read on to see how easy it is to make it neat once and for all. MusicBrainz is an online database that uses audio “fingerprints” to identify music tracks even when they’re incorrectly labelled. We’ll be using this database through a free client called Picard, available for Windows, Mac OS X and Linux. So first thing, head on over to Picard’s download page and get the installer. If you use Linux, you can install Picard using your package manager. Once you finish going through the installer, run Picard. Your firewall might pop up an alert telling you Picard is trying to access the Internet; you should agree to let Picard through. You will now see the main Picard interface. Click View > File browser (or press Ctrl+B). Latest Features How-To Geek ETC Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? 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 Awesome 10 Meter Curved Touchscreen at the University of Groningen [Video] TV Antenna Helper Makes HDTV Antenna Calibration a Snap Turn a Green Laser into a Microscope Projector [Science] The Open Road Awaits [Wallpaper] N64oid Brings N64 Emulation to Android Devices Super-Charge GIMP’s Image Editing Capabilities with G’MIC [Cross-Platform]

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  • How can I better implement A star algorithm with a very large set of nodes?

    - by Stephen
    I'm making a game with nodejs in which many enemies must converge on the player as the player moves around a relatively open space (right now it is an open field with few obstacles, but eventually there may be some small buildings in the field with 1 or 2 rooms). It's a multiplayer game using websockets, so the server needs to keep track of enemies and players. I found this javascript A* library which I've modified to be used on the server as a nodejs module. The library utilizes a Binary Heap to track the nodes for the algorithm, so it should be pretty fast (and indeed, with a small grid, say 100x100 it is lightning fast). The problem is that my game is not really tile-based. As the player moves around the map, he is moving on a more or less 1-to-1 per-pixel coordinate system (the player can move in 8 directions, 1 or 2 pixels at a time). In preliminary tests, on an 800x600 field, the path-finding can take anywhere from 400 to 1000 ms. Multiply that by 10 enemies and the game starts to get pretty choppy. I have already set it up so that each enemy will only do a path-finding call once per second or even as slow as once every 2 seconds (they have to keep updating their path because the players can move freely). But even with this long interval, there are noticeable lag spikes or chops every couple of seconds as the enemies update their paths. I'm willing to approach the problem of path-finding differently, if there's another option. I'm assuming that the real problem is the enormous grid (800x600). It also occurs to me that maybe the large arrays are to blame, as I've read that V8 has trouble with large arrays.

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  • Error when upgrading initscripts using dist-upgrade on a cd image using uck

    - by InkBlend
    I was using UCK to customize an Ubuntu 11.10 image, and ran a dist-upgrade on it (from the console) to try to update all of the packages on it. The upgrade worked successfully for all but two packages, so I tried again and got the same error message. This is what happened: # sudo apt-get dist-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 2 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue [Y/n]? y Setting up initscripts (2.88dsf-13.10ubuntu4.1) ... guest environment detected: Linking /run/shm to /dev/shm rmdir: failed to remove `/run/shm': Device or resource busy Can't symlink /run/shm to /dev/shm; please fix manually. dpkg: error processing initscripts (--configure): subprocess installed post-installation script returned error exit status 1 No apport report written because MaxReports is reached already dpkg: dependency problems prevent configuration of ifupdown: ifupdown depends on initscripts (>= 2.88dsf-13.3); however: Package initscripts is not configured yet. dpkg: error processing ifupdown (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports is reached already Errors were encountered while processing: initscripts ifupdown E: Sub-process /usr/bin/dpkg returned an error code (1) # How can I fix this? Is the problem with the ISO, dpkg, or can I just not upgrade some packages with UCK? I am using Ubuntu 11.10 to and UCK 2.4.5 to customize an Ubuntu 11.10 image.

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  • Compare Your Internet Cost and Speed to Global Averages [Infographic]

    - by ETC
    Internet pricing and speed varies wildly across the world. The US, for instance, currently ranks 15th in speed but enjoys reasonably priced internet access. How reasonably priced? If you’re a US citizen you likely have an average internet access speed of 4.8 mbps and you pay a little over $3 per mbps. If you’re in Sweden, however, you likely have an 18 mbps connection and you pay a scant 63 cents per mpbs. The real envy of the internet speed Olympics by far is Japan with a mighty 61 mbps at a mere 27 cents per mbps. Hit up the link below for the full infographic (or use this local mirror if you need to dodge a firewall), then sound off in the comments with how you compare on the international scale. Internet Speeds and Costs Around the World [via Daily Infographic] 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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  • Securing ClickOnce hosted with Amazon S3 Storage

    - by saifkhan
    Well, since my post on hosting ClickOnce with Amazon S3 Storage, I've received quite a few emails asking how to secure the deployment. At the time of this post I regret to say that there is no way to secure your ClickOnce deployment hosted with Amazon S3. The S3 storage is secured by ACL meaning that a username and password will have to be provided before access. The Amazon CloudFront, which sits on top of S3, allows you to apply security settings to your CloudFront distribution by Applying an encryption to the URL. Restricting by IP. The problem with the CloudFront is that the encryption of the URL is mandatory. ClickOnce does not provide a way to pass the "Amazon Public Key" to the CloudFront URL (you probably can if you start editing the XML and HTML files ClickOnce generate but that defeats the porpose of ClickOnce all together). What would be nice is if Amazon can allow users to restrict by IP addresses or IP Blocks. I'd sent them an email and received a response that this is something they are looking into...I won't hold my breadth though. Alternative I suggest you look at Rack Space Cloud hosting http://www.rackspacecloud.com they have very competitive pricing and recently started hosting Windows Virtual Servers. What you can do is rent a virtual server, setup IIS to host your ClickOnce applications. You can then use IIS security setting to restrict what IP/Blocks can access your ClickOnce payloads. Note: You don't really need Windows Server to host ClickOnce. Any web server can do. If you are familiar with Linux you can run that VM with rackspace for half the price of Windows. I hope you found this information helpful.

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  • SSMS Tools Pack 1.9.3 is out!

    - by Mladen Prajdic
    This release adds a great new feature and fixes a few bugs. The new feature called Window Content History saves the whole text in all all opened SQL windows every N minutes with the default being 30 minutes. This feature fixes the shortcoming of the Query Execution History which is saved only when the query is run. If you're working on a large script and never execute it, the existing Query Execution History wouldn't save it. By contrast the Window Content History saves everything in a .sql file so you can even open it in your SSMS. The Query Execution History and Window Content History files are correlated by the same directory and file name so when you search through the Query Execution History you get to see the whole saved Window Content History for that query. Because Window Content History saves data in simple searchable .sql files there isn't a special search editor built in. It is turned ON by default but despite the built in optimizations for space minimization, be careful to not let it fill your disk. You can see how it looks in the pictures in the feature list. The fixed bugs are: SSMS 2008 R2 slowness reported by few people. An object explorer context menu bug where it showed multiple SSMS Tools entries and showed wrong entries for a node. A datagrid bug in SQL snippets. Ability to read illegal XML characters from log files. Fixed the upper limit bug of a saved history text to 5 MB. A bug when searching through result sets prevents search. A bug with Text formatting erroring out for certain scripts. A bug with finding servers where it would return null even though servers existed. Run custom scripts objects had a bug where |SchemaName| didn't display the correct table schema for columns. This is fixed. Also |NodeName| and |ObjectName| values now show the same thing.   You can download the new version 1.9.3 here. Enjoy it!

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