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• OpenGL: Want to keep gun on top of car and be able to control angle. Having difficulties.

  - by Blair

  So I am making a simple game. I want to put a gun on top of a car so basically like a long rod in the middle of a black is how I am modelling it right now. I want to be able to control the angle of the gun. Basically it can go forward all the way so that it is parallel to the ground facing the direction the car is moving or it can point behind the car and any of the angles in between these positions. I have something like the following right now but its not really working. Is there an better way to do this that I am not seeing? #This will place the car glPushMatrix() glTranslatef(self.position.x,1.5,self.position.z) glRotated(self.rotation, 0.0, 1.0, 0.0) glScaled(0.5, 0.5, 0.5) glCallList(self.model.gl_list) glPopMatrix() #This will place the gun on top glPushMatrix() glTranslatef(self.position.x,2.5,self.position.z) glRotated(self.tube_angle, self.direction.z, 0.0, self.direction.x) print self.direction.z glRotated(45, self.position.z, 0.0, self.position.x) glScaled(1.0, 0.5, 1.0) glCallList(self.tube.gl_list) glPopMatrix() This almost works. It moves the gun up and down. But when the car moves around the angle of the gun changes. Not what I want.

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• Service Testing made easy with SO-Aware Test Workbench

  - by cibrax

  I happy to announce today a new addition to our SO-Aware service repository toolset, SO-Aware Test Workbench, a WPF desktop application for doing functional and load testing against existing WCF Services. This tool is completely integrated to the SO-Aware service repository, which makes configuring new load and functional tests for WCF Soap and REST services a breeze. From now on, the service repository can play a very important role in an organization by facilitating collaboration between developers and testers. Developers can create and register new services in the repository with all the related artifacts like configuration. On the other hand, Testers can just pick one of the existing services in the repository and create functional or load tests from there, with no need to deal with specific details of the service implementation, location or configuration settings. Developers and Testers can later use the result of those tests to modify the services or adjust different settings on the tests or service configuration. Gustavo Machado, one of the developers behind this project, has written an excellent post describing all the functionality that can find today in the tool. You can also see the tool in action in this Endpoint Tv episode with Jesus and Ron Jacobs.

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• Packard Bell EasyNote MZ35 freezes when AC unplugged and wireless on

  - by Sense Hofstede

  I would like to ask for some help debugging an irritating problem I'm having with my Packard Bell EasyNote MZ35 and Ubuntu 10.10. Always when the laptop is connected to a wireless network and the AC power lead is unplugged—so it's running on battery power—the system freezes. The screen turns black and shows the error GLib-WARNING **: getpwuid_r(): failed due to unknown user id (0), although this error is completely unrelated to the actual problem. Previous searches on the internet indicate that this error is unrelated to the bug I'm experiencing. It is suggested that Ubuntu tries to hibernate or suspend and that you're seeing the black screen running 'behind' the X server. That would explain the fact that curiously you still see—but cannot move—the mouse cursor. I've already set all the values of the GConf keys in /apps/gnome-power-manager/actions/ to 'nothing', disabled all power management actions I could find, but it didn't solve the problem. It is important to note that the freeze doesn't happen immediately after you unplug the AC power lead. The icon in the notification area may have changed already, but the freeze only occurs when the Notify OSD bubble appears that tells you how many time is left with your battery. Does anyone here have a clue about this problem? A workaround or the cause? If anyone could help me with disabling possible suspend/hibernate behaviour that might be related to this issue, that would be appreciated too. This issue has been reported as bug #666852.

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• 2D/Isometric map algorithm

  - by Icarus Cocksson

  First of all, I don't have much experience on game development but I do have experience on development. I do know how to make a map, but I don't know if my solution is a normal or a hacky solution. I don't want to waste my time coding things, and realise they're utterly crap and lose my motivation. Let's imagine the following map. (2D - top view - A square) X: 0 to 500 Y: 0 to 500 My character currently stands at X:250,Y:400, somewhere near center of 100px above bottom and I can control him with my keyboard buttons. LEFT button does X--, UP button does Y-- etc. This one is kid's play. I'm asking this because I know there are some engines that automate this task. For example, games like Diablo 3 uses an engine. You can pretty much drag drop a rock to map, and it is automatically being placed here - making player unable to pass through/detect the collision. But what the engine exactly does in the background? Generates a map like mine, places a rock at the center, and checks it like: unmovableObjects = array('50,50'); //we placed a rock at 50,50 location if(Map.hasUnmovableObject(CurrentPlayerX, CurrentPlayerY)) { //unable to move } else { //able to move } My question is: Is this how 2D/Isometric maps are being generated or there is a different and more complex logic behind them?

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• Differentiating between Hard and Soft Dependencies - Fedora Yum [closed]

  - by Sujit

  I will ask this with an example - I have installed gnash-plugin on fedora 64 bit with Yum. It pulled in following packages - Installing : agg-2.5-9.fc13.x86_64 1/6 Installing : gtkglext-libs-1.2.0-10.fc12.x86_64 2/6 Installing : boost-thread-1.44.0-7.fc14.x86_64 3/6 Installing : boost-date-time-1.44.0-7.fc14.x86_64 4/6 Installing : 1:gnash-0.8.8-4.fc14.x86_64 5/6 Installing : 1:gnash-plugin-0.8.8-4.fc14.x86_64 6/6 Now, I tested the plugin and I didn't like it. I want to remove all these above packages which got installed with the plugin as I don't longer going to need them. How can I do this? I checked remove-with-plugin for yum but it pulls in all the packages which are currently depending on the packages. I understand the thought process behind showing what packages are getting affected - but I am wondering if there is any way of looking at the history with what package got installed when I installed a certain package. When gnash-plugin wasn't there firefox was running fine with but after I installation firefox is now depends on this new plugin. Has any one worked on differentiating hard-dependencies(hard means the program will break if that package is not there) and soft-dependencies ( soft means the program may not get affected fatally) ?

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• Why, in WPF, do we set an object to Stretch via its Alignment properties instead of Width/Height?

  - by Jonathan Hobbs

  In WPF's XAML, we can tell an element to fill its container like this: <Button HorizontalAlignment="Stretch" VerticalAlignment="Stretch" /> Why is it that when we set an element to Stretch, we do it via the HorizontalAlignment and VerticalAlignment properties? Why did the WPF design team decide to take this approach over having Width="Stretch" and Height="Stretch"? I presume it was a calculated decision, and I'm curious about the reasoning. CSS, among other technologies, follows the convention that stretching is done via the width and height properties, and that alignment affects positioning exclusively. This seems intuitive enough: stretching the element is manipulating its width and height, after all! Using the corresponding alignment property to stretch an element seems counter-intuitive and unusual in comparison. This makes me think they didn't just pick this option for no reason: they made a calculated decision and had reasons behind it. Width and Height use the double data type, which would ordinarily mean assigning it a string would be silly. However, WPF's Window objects can take Width="Auto", which gets treated as double.NaN. Couldn't Width="Stretch" be stored as double.PositiveInfinity or some other value?

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• excel vba to CRUD drupal nodes

  - by Kirk Hings

  We need to periodically migrate Excel reports data into Drupal nodes. We looked at replicating some Excel functionality in Drupal with slickgrid, but it wasn't up to snuff. The Excel reports people don't want to double-enter their data, but their data is important to be in this Drupal site. They have hundreds of Excel reports, and update a row in each weekly. We want a button at the row end to fire a VBA macro that submits the data to Drupal, where a new node is created from the info submitted. (Yes, we are experienced with both Drupal and VBA; all users and the site are behind our firewall.) We need the new node's nid or URL returned so we can then create a link in Excel directly to that node Site is D6, using Services 3.x module. I tried the REST server module, but we can't get it to retrieve data without session authentication on, which we can't do from Excel. (unless you can?) I also noticed the 'data' it was returning via browser url was 14 or 20 nodes' info, not the one nid requested (Example: http://mysite.com/services/rest/report/node/30161) When I attempt to create a simple node like this from VBA: Dim MyURL as String MyURL = "http://mysite.com/services/rest/report/node?node[type]=test&node[title]=testing123&node[field_test_one][0][value]=123" Set objHTTP = CreateObject("MSXML2.ServerXMLHTTP") With objHTTP .Open "POST", MyURL, False .setRequestHeader "Content-Type", "application/x-www-form-urlencoded" .send (MyURL) End With I get HTTP Status: Unauthorized: Access denied for user 0 "anonymous" and HTTP Response: null Everything I search for has examples in php or java, nothing in VBA. Also tried switching to using an XMLRPC server but that's even more confusing. We would like json (used application/json, set formatter accordingly in REST server settings), but will use anything that works. Ideas? Thanks in advance!

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• Doing powerups in a component-based system

  - by deft_code

  I'm just starting really getting my head around component based design. I don't know what the "right" way to do this is. Here's the scenario. The player can equip a shield. The the shield is drawn as bubble around the player, it has a separate collision shape, and reduces the damage the player receives from area effects. How is such a shield architected in a component based game? Where I get confused is that the shield obviously has three components associated with it. Damage reduction / filtering A sprite A collider. To make it worse different shield variations could have even more behaviors, all of which could be components: boost player maximum health health regen projectile deflection etc Am I overthinking this? Should the shield just be a super component? I really think this is wrong answer. So if you think this is the way to go please explain. Should the shield be its own entity that tracks the location of the player? That might make it hard to implement the damage filtering. It also kinda blurs the lines between attached components and entities. Should the shield be a component that houses other components? I've never seen or heard of anything like this, but maybe it's common and I'm just not deep enough yet. Should the shield just be a set of components that get added to the player? Possibly with an extra component to manage the others, e.g. so they can all be removed as a group. (accidentally leave behind the damage reduction component, now that would be fun). Something else that's obvious to someone with more component experience?

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• Doing powerups in a component-based system

  - by deft_code

  I'm just starting really getting my head around component based design. I don't know what the "right" way to do this is. Here's the scenario. The player can equip a shield. The the shield is drawn as bubble around the player, it has a separate collision shape, and reduces the damage the player receives from area effects. How is such a shield architected in a component based game? Where I get confused is that the shield obviously has three components associated with it. Damage reduction / filtering A sprite A collider. To make it worse different shield variations could have even more behaviors, all of which could be components: boost player maximum health health regen projectile deflection etc Am I overthinking this? Should the shield just be a super component? I really think this is wrong answer. So if you think this is the way to go please explain. Should the shield be its own entity that tracks the location of the player? That might make it hard to implement the damage filtering. It also kinda blurs the lines between attached components and entities. Should the shield be a component that houses other components? I've never seen or heard of anything like this, but maybe it's common and I'm just not deep enough yet. Should the shield just be a set of components that get added to the player? Possibly with an extra component to manage the others, e.g. so they can all be removed as a group. (accidentally leave behind the damage reduction component, now that would be fun). Something else that's obvious to someone with more component experience?

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• In the days of modern computing, in 'typical business apps' - why does performance matter?

  - by Prog

  This may seem like an odd question to some of you. I'm a hobbyist Java programmer. I have developed several games, an AI program that creates music, another program for painting, and similar stuff. This is to tell you that I have an experience in programming, but not in professional development of business applications. I see a lot of talk on this site about performance. People often debate what would be the most efficient algorithm in C# to perform a task, or why Python is slow and Java is faster, etc. What I'm trying to understand is: why does this matter? There are specific areas of computing where I see why performance matters: games, where tens of thousands of computations are happening every second in a constant-update loop, or low level systems which other programs rely on, such as OSs and VMs, etc. But for the normal, typical high-level business app, why does performance matter? I can understand why it used to matter, decades ago. Computers were much slower and had much less memory, so you had to think carefully about these things. But today, we have so much memory to spare and computers are so fast: does it actually matter if a particular Java algorithm is O(n^2)? Will it actually make a difference for the end users of this typical business app? When you press a GUI button in a typical business app, and behind the scenes it invokes an O(n^2) algorithm, in these days of modern computing - do you actually feel the inefficiency? My question is split in two: In practice, today does performance matter in a typical normal business program? If it does, please give me real-world examples of places in such an application, where performance and optimizations are important.

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• What the Hekaton?

  - by Tony Davis

  Hekaton, the power behind SQL Server 2014′s In-Memory OLTP technology, is intended to make data operations run orders of magnitude faster on SQL Server. This works its magic partly by serving database workloads entirely from main memory, using memory-optimized table structures. It replaces the relational engine’s standard locking model with an optimistic concurrency model based on time-stamped row versions. Deeper down the Hekaton engine uses new, ‘latch free’ data structures. So far, so good, but performance improvements on this scale require a compromise, and the compromise is that these aren’t tables as we understand them. For the database developer, these differences are painful because they involve sacrificing some very important bits of the relational model. Most importantly, Hekaton tables don’t currently support FOREIGN KEY constraints or CHECK constraints, and you can’t put the checks in triggers because there aren’t any DML triggers either. Constraints allow a relational designer to enforce relational integrity and data integrity. Without them, of course, ‘bad data’ can get into our Hekaton tables. There is no easy way of preventing it. For several classes of database and data, this is a show-stopper. One may regard all these restrictions regretfully, seeing limited opportunity to try out Hekaton with current databases, but perhaps there is also a sudden glow of recognition. Isn’t this how we all originally imagined table variables were going to be, back in SQL 2005? And they have much the same restrictions. Maybe, instead of pretending that a currently-designed database can be ‘Hekatonized’ with a few mouse clicks, we should redesign databases for SQL 2014 to replace table variables with Hekaton tables, exploiting this technology for fast intermediate processing, and for the most part forget, for now, the idea of trying to convert our base relational tables into Hekaton tables. Few database developers would be averse to having their working tables running an order of magnitude faster, as long as it didn’t compromise the integrity of the data in the base tables.

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• How to Manage Technical Employees

  - by Ajarn Mark Caldwell

  In my current position as Software Engineering Manager I have been through a lot of ups and downs with staffing, ranging from laying-off everyone who was on my team as we went through the great economic downturn in 2007-2008, to numerous rounds of interviewing and hiring contractors, full-time employees, and converting some contractors to employee status.  I have not yet blogged much about my experiences, but I plan to do that more in the next few months.  But before I do that, let me point you to a great article that somebody else wrote on The Unspoken Truth About Managing Geeks that really hits the target.  If you are a non-technical person who manages technical employees, you definitely have to read that article.  And if you are a technical person who has been promoted into management, this article can really help you do your job and communicate up the line of command about your team.  When you move into management with all the new and different demands put on you, it is easy to forget how things work in the tech subculture, and to lose touch with your team.  This article will help you remember what’s going on behind the scenes and perhaps explain why people who used to get along great no longer are, or why things seem to have changed since your promotion. I have to give credit to Andy Leonard (blog | twitter) for helping me find that article.  I have been reading his series of ramble-rants on managing tech teams, and the above article is linked in the first rant in the series, entitled Goodwill, Negative and Positive.  I have read a handful of his entries in this series and so far I pretty much agree with everything he has said, so of course I would encourage you to read through that series, too.

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• Read On Phone Pushes Data from Your Desktop to the Appropriate Android App

  - by ETC

  Read On Phone is a free Android application that intelligently pushes data to your phone from your bowser. Rather than simply opening the URL on your phone, it opens the appropriate application for the task and formats text. Most send-to-phone type tools simply take the URL of the web page you’re looking at on your computer and shuttle it to your phone. Read On Phone is a more active and effective tool. When you send a page that is text, it formats the text for easy reading on your phone. When you send a YouTube video, map, or telephone number, it opens up the appropriate tool on your phone such as your YouTube viewer, Google Maps, or your phone dialer. In addition to that handy functionality Read On Phone also includes adjustments for day and night reading, font size, auto-scrolling, and pagination. Read On Phone is available as both a Chrome extension and as a bookmarklet for cross-browser use. Hit up the link below for additional information. Read On Phone 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) Read On Phone Pushes Data from Your Desktop to the Appropriate Android App MetroTwit is a Sleek Native Twitter Client for Your Windows System Make Efficient Use of Tab Bar Space by Customizing Tab Width in Firefox See the Geeky Work Done Behind the Scenes to Add Sounds to Movies [Video] Use a Crayon to Enhance Engraved Lettering on Electronics Adult Swim Brings Their Programming Lineup to iOS Devices

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• Unhelpful Help

  - by Geoff N. Hiten

  Up until SQL 2012, I recommended installing Books On-Line (BOL) anywhere you installed SQL Server.  It made looking up reference information simpler, especially when you were on a server that didn’t have direct Internet access.  That all changed today.  I started the new Help Viewer with a local copy of BOL.  I actually found what I was looking for and closed the app.  Or so I thought.  Then I noticed something.  A little parasite had attached itself to my system.      Yep, the “Help” system left an “agent” behind.  Now I shouldn’t have to tell you that running application helper agents on server platforms is a bad idea.  And it gets worse.  There is no way to configure the app so that it does NOT start the parasite agent each time you restart help.  So the solution becomes do not install help on production server platforms.  Which is pretty unhelpful.

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• How can I make an MMORPG appeal to casual players?

  - by Philipp

  I believe that there is a significant market of players who would enjoy the exploration and interaction aspects of MMORPGs, but simply don't have the time for the endless grinding marathons which are part of the average MMORPG. MMORPGs are all about interaction between players. But when different players have different amounts of time to invest into a game, those with less time to spend will soon lack behind their power-leveling friends and won't be able to interact with them anymore. One way to solve this would be to limit the progress a player can achieve per day, so that it simply doesn't make sense to play more than one or two hours a day. But even the busiest casual players sometimes like to spend a whole sunday afternoon playing a video game. Just stopping them after two hours would be really frustrating. It also creates a pressure to use the daily progress limit every day, because otherwise the player would feel like wasting something. This pressure would be detrimental for casual gamers. What else could be done to level the playing field between those players who play 40+ hours a week and those who can't play more than 10?

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• Silverlight Cream for May 25, 2010 -- #869

  - by Dave Campbell

  In this Issue: Miroslav Miroslavov, Victor Gaudioso, Phil Middlemiss, Jonathan van de Veen, Lee, and Domagoj Pavlešic. From SilverlightCream.com: Book Folding effect using Pixel Shader On the new CompleteIT site, did you know the page-folding was done using PixelShaders? I hadn't put much thought into it, but that's pretty cool, and Miroslav Miroslavov has a blog post up discussing it, and the code behind it. New Silverlight Video Tutorial: How to create a Slider with a ToolTip that shows the Value of the Slider This is pretty cool... Victor Gaudioso's latest video tutorial shows how to put the slider position in the slider tooltip... code and video tutorial included. Backlighting a ListBox Put this in the cool category as well... Phil Middlemiss worked out a ListBox styling that makes the selected item be 'backlit' ... check out the screenshot on the post... and then grab the code :) Adventures while building a Silverlight Enterprise application part #33 Jonathan van de Veen is discussing changes to his project/team and how that has affected development. Read about what they did right and some of their struggles. RIA Services and Storedprocedures Lee's discussing Stored Procs and RIA Services ... he begins with one that just works, then moves on to demonstrate the kernel of the problem he's attacking and the solution of it. DoubleClick in Silverlight Domagoj Pavlešic got inspiration from one of Mike Snow's Tips of the Day and took off on the double-click idea... project source included. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• Podcast Show Notes: The Fusion Middleware A-Team and the Chronicles of Architecture

  - by Bob Rhubart

  If you pay any attention at all to the Oracle blogosphere you’ve probably seen one of several blogs published by members of a group known as the Oracle Fusion Middleware A-Team. A new blog, The Oracle A-Team Chronicles, was recently launched that combines all of those separate A-Team blogs in one. In this program you’ll meet some of the people behind the A-team and the creation of that new blog. The Conversation Listen to Part 1: Background on the A-Team - When was it formed? What is it’s mission? 54) What are some of the most common challenges A-Team architects encounter in the field? Listen to Part 2 (July 3): The panel discusses the trends - big data, mobile, social, etc - that are having the biggest impact in the field. Listen to Part 3 (July 10): The panelists discuss the analysts, journalists, and other resources they rely on to stay ahead of the curve as the technology evolves, and reveal the last article or blog post they shared with other A-team members. The Panelists Jennifer Briscoe: Senior Director, Oracle Fusion Middleware A-Team Clifford Musante: Lead Architect, Application Integration Architecture A-Team, webmaster of the A-Team Chronicles Mikael Ottosson: Vice President, Oracle Fusion Apps and Fusion Middleware A-Team and Cloud Applications Group Pardha Reddy: Senior director of Oracle Identity Management and a member of the Oracle Fusion Middleware A-team Coming Soon Data Warehousing and Oracle Data Integrator: Guest producer and Oracle ACE Director Gurcan Orhan selected the topic and panelists for this program, which also features Uli Bethke, Michael Rainey, and Oracle ACE Cameron Lackpour. Java and Oracle ADF Mobile: An impromptu roundtable discussion featuring QCon New York 2013 session speakers Doug Clarke, Frederic Desbiens, Stephen Chin, and Reza Rahman. Stay tuned:

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• Koans, now available in Python flavor

  - by Greg Malcolm

  Recently a Python developer friend with whom I was pair programming with suggested that I show him how to write a little Ruby. I responded by telling him to check out Ruby Koans as a starting point. However I wanted to try that in reverse at the same time with me learning some Python. I did a bit of googling, and sure enough someone had started writing some Python Koans. It just needed finishing... So, a few weeks later Python Koans is now complete and ready for action! It is available through Mercurial on Bitbucket: http://bitbucket.org/gregmalcolm/python_koans/wiki/Home It is also mirrored on Github: http://wiki.github.com/gregmalcolm/python_koans/ Converting it was fairly easy. Aside from the differing philosophical approaches behind the two languages, Ruby and Python are fairly similar. We had to come up with completely new material for a few subjects like multiple inheritance and decorators, but for most features in Ruby there is something roughly comparable in Python. I highly recommend writing tests (or koans) as a means to lean a new language or framework. I've learned a lot from doing this.

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• A Cautionary Tale About Multi-Source JNDI Configuration

  - by scott.s.nelson(at)oracle.com

  Here's a bit of fun with WebLogic JDBC configurations.  I ran into this issue after reading that p13nDataSource and cgDataSource-NonXA should not be configured as multi-source. There were some issues changing them to use the basic JDBC connection string and when rolling back to the bad configuration the server went "Boom".  Since one purpose behind this blog is to share lessons learned, I just had to post this. If you write your descriptors manually (as opposed to generating them using the WLS console) and put a comma-separated list of JNDI addresses like this: <jdbc-data-source-params> <jndi-name>weblogic.jdbc.jts.commercePool,contentDataSource, contentVersioningDataSource,portalFrameworkPool</jndi-name> <algorithm-type>Load-Balancing</algorithm-type> <data-source-list>portalDataSource-rac0,portalDataSource-rac1</data-source-list> <failover-request-if-busy>false</failover-request-if-busy> </jdbc-data-source-params> so long as the first address resolves, it will still work. Sort of.  If you call this connection to do an update, only one node of the RAC instance is updated. Other wonderful side-effects include the server refusing to start sometimes. The proper way to list the JNDI sources is one per node, like this: <jdbc-data-source-params> <jndi-name>weblogic.jdbc.jts.commercePool</jndi-name> <jndi-name>contentDataSource</jndi-name> <jndi-name>contentVersioningDataSource</jndi-name> <jndi-name>portalFrameworkPool</jndi-name> <algorithm-type>Load-Balancing</algorithm-type> <data-source-list>portalDataSource-rac0, portalDataSource-rac1, portalDataSource-rac2 </data-source-list> <failover-request-if-busy>false</failover-request-if-busy> </jdbc-data-source-params>(Props to Sandeep Seshan for locating the root cause)

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• How do I stop ubuntu from detaching minimize/maximuze/close buttons?

  - by Shahbaz

  Some time ago I managed to get ubuntu to keep the window menubars in the menu rather than the bar above (I'm not sure if this part is unity or compiz, or what's the difference). That was by removing indicator-appmenu Anyway, so now everything is fine except one thing: If I have a window that is full screen, the minimize/maximize/close buttons are still grabbed by the bar on the top. Usually this doesn't cause a problem because the upper-left corner of the full screen window and the whole screen are not too far apart. However, one thing happens to me a lot, and that is I am working on something (programming), then I need to check some things from other places so I open some windows, see what I want and switch back to my work. Those windows however are temporary so at some point I want to close them. Now here's what happens: I have the focus on some window and I can't close the maximized window behind it unless I click on the window first, so that the buttons appear and then close it. I couldn't find anything on the internet about this. Is this something that's hardcoded in unity/compiz/whatever or is there actually a way to configure this?

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• What is the proper way to maintain the angle of a gun mounted on a car?

  - by Blair

  So I am making a simple game. I want to put a gun on top of a car. I want to be able to control the angle of the gun. Basically it can go forward all the way so that it is parallel to the ground facing the direction the car is moving or it can point behind the car and any of the angles in between these positions. I have something like the following right now but its not really working. Is there an better way to do this that I am not seeing? #This will place the car glPushMatrix() glTranslatef(self.position.x,1.5,self.position.z) glRotated(self.rotation, 0.0, 1.0, 0.0) glScaled(0.5, 0.5, 0.5) glCallList(self.model.gl_list) glPopMatrix() #This will place the gun on top glPushMatrix() glTranslatef(self.position.x,2.5,self.position.z) glRotated(self.tube_angle, self.direction.z, 0.0, self.direction.x) print self.direction.z glRotated(45, self.position.z, 0.0, self.position.x) glScaled(1.0, 0.5, 1.0) glCallList(self.tube.gl_list) glPopMatrix() This almost works. It moves the gun up and down. But when the car moves around, the angle of the gun changes. Not what I want.

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• Experience the Oracle Support Stars Bar

  - by Oracle OpenWorld Blog Team

  By Gina WolfDon't miss the opportunity to meet with the stars of Oracle Support, live and in person at the Moscone West Level 2 lobby. Ask our experts your toughest questions about the Oracle hardware, software, and engineered systems you use to run your business. Explore new Oracle Support innovations including Oracle Platinum Services, My Oracle Support Mobile, and the Oracle Enterprise Manager Ops Center Everywhere program. Learn the latest best practices for problem prevention, rapid resolution, and product upgrades. In addition, discover how Oracle Advanced Customer Support Services can help you maximize the performance of all mission-critical Oracle systems. Come meet the stars behind your support: our trusted experts are ready to assist! The Oracle Support Stars Bar at the Moscone West Level 2 lobby is open all conference week at the following times: Sunday, September 30, 12:00 p.m. – 4:00 p.m. Monday, October 1, 10:00 a.m. – 6:00 p.m. Tuesday, October 2, 10:00 a.m. – 6:00 p.m. Wednesday, October 3, 9:00 a.m. – 5:00 p.m. Thursday, October 4, 9:00 a.m. – 1:00 p.m. Attend one or more of the 27 Oracle Customer Support Services sessions during Oracle OpenWorld to learn how Oracle Support enables you to gain maximum value from your Oracle hardware and software investments.

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• Mouse click events are delayed when moving the cursor in xubuntu 12.04

  - by bobbaluba

  I am trying out live xubuntu on my samsung n150 (netbook, similar to eeepc). So far everything seems perfect, except for this one thing. When I am clicking the mouse while moving the cursour, the click event is delayed. This is extremely annoying when i try to to move windows, because i end up clicking the window behind the window i am trying to move and thereby changing focus. This goes for all applications. I.e selecting text is difficult. There is no lag in the cursor movement, just the click event. The click event is registered with the new mouse position, not the one when the mouse was clicked. I tried searching for the problem, but all the other cases where either kind of different, or had no solution. EDIT: After testing some more, here are some more information. The click doesn't occur until i stop moving the cursor. If I move the cursor smoothly around, the click never gets through. I have ubuntu netbook remix 10.04 installed, and have no problems with the mouse there. EDIT2: Once I connected a usb-mouse, the problem dissappeared. Dragging now works perfectly with both the track pad and the usb mouse. I will update once I have installed xubuntu and figured out if this is a persistant problem. EDIT3: I have installed, and the problem is still there. It dissappears when I have a second mouse connected however, and after I resume from suspend. My solution for now, is just to keep the dongle connected all the time.

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• How should I host our scalable worker processes?

  - by Pieter Breed

  We are designing a new architecture for an enterprise business. The principles we've followed so far is not to develop what you can (possible buy and) deploy, ie, don't reinvent any wheels. In this way we've decided on CQRS, RabbitMQ, Riak and a bunch of other things. We still need to write /some/ business code though and these will be in the form of worker processes, which will consume commands from a message queue and after any side-effects, produce events onto another message queue. The idea behind this is that via the competing-consumers design we will have a scalable design right out of the box. One option is of writing a management infrastructure that will know how to: deploy code instantiate processes kill processes update configuration etc IE provide fault tolerance and scalability. Also, this is exactly what something like GAE and Heroku does for you, but in a public setting and in our organization, public is bad. My question is, is there an out-of-the-box solution that we can use to host our consumers in? Like a private cloud or private platform-as-a-service. Private Heroku or GAE. Is there some kind of software or software product with which we can do all of these things and thereby get scalability and fault tolerance over our consumers?

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• HTG Explains: What Is Bitcoin, the Virtual Digital Currency?

  - by YatriTrivedi

  Bitcoin is a virtual currency that employs some very interesting principles. Here’s the skinny on what exactly it is and how the fascinating technology behind it works. Disclaimer: This is NOT financial or legal advice. This. Is. NOT. Financial. Or. Legal. Advice. This is not, in any way, shape, or form, financial or legal advice. We’re covering this topic because of the technological implementations it uses and the innovations it attempts to make. If you do anything because of this post, we are not responsible because this is NOT financial or legal advice. ^_^ Latest Features How-To Geek ETC 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 How to Enable User-Specific Wireless Networks in Windows 7 The History Of Operating Systems [Infographic] DriveSafe.ly Reads Your Text Messages Aloud The Likability of Angry Birds [Infographic] Dim an Overly Bright Alarm Clock with a Binder Divider Preliminary List of Keyboard Shortcuts for Unity Now Available Bring a Touch of the Wild West to Your Desktop with the Rango Theme for Windows 7

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