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  • rts libgdx design?

    - by user36531
    I am attempting to create a simple rts multi-player strategy game using libgdx. I am stumped at the moment. I want the underlying game world to run at all times and be aware of where all items are on the map.. so if player A logs in and moves unit to some location on the grid and logs off, that unit info is still there and can be accessed again by player A when they log back on to move somewhere else (if it didnt get attacked during the playerA was logged off). How can i do this? Do i create a main game world on the server and when players connect make client just sequentially request whats in each visible tile? Is there an easier way to get this done? Or go SQL route? Whats better?

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  • Dynamic vs Statically typed languages for websites

    - by Bradford
    Wanted to hear what others thought about this statement: I’ll contrast that with building a website. When rendering web pages, often you have very many components interacting on a web page. You have buttons over here and little widgets over there and there are dozens of them on a webpage, as well as possibly dozens or hundreds of web pages on your website that are all dynamic. With a system with a really large surface area like that, using a statically typed language is actually quite inflexible. I would find it painful probably to program in Scala and render a web page with it, when I want to interactively push around buttons and what-not. If the whole system has to be coherent, like the whole system has to type check just to be able to move a button around, I think that can be really inflexible. Source: http://www.infoq.com/interviews/kallen-scala-twitter

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  • Enabling Multi-touch features of the Apple Magic Mouse on Ubuntu 12.04

    - by Martin
    I want to write a simple app that uses Apple's Magic Trackpad, nothing special, just so that it recognizes atleast one gesture. The thing is, Ubuntu itself doesnt really recognize this device. I'm using Ubuntu 12.04 and by default the device works with 1 finger, but without tap-click or doubletap, 3 fingers move the window and 3 finger spread makes it fullscreen. I managed to enable 2 finger scrolling with "xinput set-prop 8 'Two-Finger Scrolling' 1 1", but thats about it. No other gestures work, ginn doesnt start, giesview detects the device but doesnt respond to any of the gestures, and touchegg doesnt start either. I tried example apps from qt that come with ubuntu but they dont work. So... what do i do? i tried using qt but all i get from the app is "Got touch without getting TouchBegin for id XX" what else can i use to get my app to work with multitouch devices?

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  • Reassign the Right button functionality of touchpad

    - by Guandalino
    My notebook has a touchpad with two buttons. The touchpad works pretty well and I use it for vertical/horizontal scroll, two fingers scrolling etc. The Left button acts like the left button of a mouse. The Right button too, when clicked it makes appear the classic contextual menu (create new folder, move to trash etc...). The problem is that Right button doesn't work anymore for mechanical reasons, so pressing it has no effect. To recover the missing functionality, I'd like that pressing CTRL + Left button I get the same thing of pressing the Right button alone. Other combinations (CTRL + SHIFT + Left button) are also acceptable. Any way to do that?

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  • Do Limited Wi-Fi Channels Restrict Network Availability?

    - by Jason Fitzpatrick
    Wi-Fi protocol supports 13 communication channels; how do these channels relate to the volume of devices you can have on the network and the quality of the connection? Read on learn more about Wi-Fi channel usage. Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder? Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It How To Delete, Move, or Rename Locked Files in Windows

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  • How to reset settings when Unity won't finish booting?

    - by Emre
    I have a new 12.04 installation and I messed things up after trying to move /home to an NTFS partition, which I later learned was a bad idea. I removed references to the NTFS partition on fstab and created new users on the ext4 / partition. Now I can't get Unity to start up properly for any user. I get the GUI with only three Launch icons (none of which are clickable) and no bar at the top. The keyboard seems to the nonfunctional after I enter my credentials. The interesting thing is that I can boot when I go through recovery mode and select resume. I wonder whether I am creating the new users properly. What is the correct protocol for doing so in order to ensure that they can run Unity?

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  • Rotation based on x coordinate and x velocity?

    - by Lewis
    -(void) accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration { float deceleration = 0.3f, sensitivity = 8.0f, maxVelocity = 150; // adjust velocity based on current accelerometer acceleration playerVelocity.x = playerVelocity.x * deceleration + acceleration.x * sensitivity; // we must limit the maximum velocity of the player sprite, in both directions (positive & negative values) playerVelocity.x = fmaxf(fminf(playerVelocity.x, maxVelocity), -maxVelocity); } Hi, I want to rotate my sprite based on the velocity and accelerometer input. My sprite can move along the X axis like so: <--------- sprite ----------- But it always faces forwards, if it is moving left I want it to point slightly to the left, the degree of how far it is pointing to be judged from the velocity. This should also work for the right. I tried using atan but as the y velocity and position is always the same the function returns 0, which doesn't rotate it at all. Any ideas? Regards, Lewis.

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  • SharePoint Office365 and Azure &ndash; an Overview of what you can use today

    - by Sahil Malik
    SharePoint 2010 Training: more information I will be speaking on cloud related topics – an overview at one of my favorite user groups, CMAPonline on January 24th. Here are the details, When – Tuesday, January 24, 2012      7:00 PMWhere - UMBC Building 21 About - "SharePoint Office365 and Azure – an Overview of what you can use today!"Everyone is talking about the cloud. Everyone is moving to the cloud. Microsoft's cloud offering is probably the most expansive of all. But how does it really compare with other offerings? What is the featureset of Google? Or Amazon? And in the jungle of Beta, what is currently proven and production ready in the Microsoft spectrum? Most of all, how do you move from your current setup to a cloud based setup? In this session, Sahil provides a manager and architect level overview demystifying all these topics and more. Read full article ....

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  • How can I host a website on a dynamically-assigned IP address?

    - by nick
    I recently upgraded my internet to the point that it is much faster and more reliable than my current webhost. I would like to move my current domain to be hosted at home, but my IP address is dynamic. As far as I know, I only get a new IP when I restart my modem and or router (which is almost never) or when cable one (my ISP) pushes out a firmware update (rarely). There are a few ways I can see doing this: Convince my ISP to give me a static IP Assign my router my current IP to force a static IP (which might work?) Set my DNS record to my current IP address and update it on the rare occasions that it changes. Obviously I'm hoping that the first one works, but I don't want to pay a lot of extra money (if that's what it takes) to get a static IP address. Which of these options will work most reliably?

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  • Symlink are using both locations?

    - by Tiago Rossi
    Ive made a research and didnt found any answers, so I decided to ask here. To make you know, the /dev/sda2 disk of my WHM/Cpanel webserver got 100% full. The /var/ folder are the /dev/sda2 and I've found the reason of that isse are the /var/lib/mysql folder. To fix it I need to move the /var/lib/mysql folder from /dev/sda2 to /home/ where I have a lot of space in disk. Then I used the command lines: service mysql stop cp -r -p /var/lib/mysql/ /home/databasesmysql/ mv /var/lib/mysql /var/lib/mysql.backup/ ln -s /home/databasesmysql/ /var/lib/mysql service mysql start Ok, now to check if its running at the new location I just renamed the /var/lib/mysql to /var/lib/mysql.backup and MySQL stopped working. Also when I rename the /home/databasesmysql/ folder MySQL also stop to work. I dont know whats happening, the symlink are using both locations? Thanks very much.

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  • Get Rhythmbox debugging info

    - by skytreader
    I'm having a weird problem with Rhythmbox that no one else seems to have. When I pause on any audio CD, I can't get Rhythmbox to play it again. I've tried various workarounds including trying to play next/previous track, trying to manually move the seek bar, etc. but to no avail. When this happens I've no choice but to remove the CD from my drive and insert it again. There does not seem to be anything weird with my system when this happens, apart from the fact that Rhythmbox isn't playing as it is supposed to. Is there anything I can do to get more info on why Rhythmbox is acting up as such?

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  • Game World Design [on hold]

    - by GameDev
    I have one doubt about world game developing. I want to do a kind of platform game mixed with RPG (Side Scroll). What's the best to draw the world, - Draw everything than use the camera to move around the world - Draw just what you see as the player moves draw the new stuff. I'm new at this and didn't had any course for it. So if anyone can help me thanks :) PS: Any recommendation to learning game concept, like drawing world theory, play etc.. (not code and i want to 2D and i only see books for 3D stuff)

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  • How can I reduce lagging with GUI/GPU stuff -- make Unity run smaller, quicker, faster?

    - by chris
    Finally installed Ubuntu 12.04 on my HP Pavilion 2000. Have all of my apps on and loaded and am happy thus far. ONE ISSUE -- I'm experiencing a small amount of GUI/GPU style lagging when I go to open menus, move windows, etc. What settings can I disable to allow it to run sharply and quickly, even if i t means sacrificing some of the graphics? Have already installed pre-load. Just want the OS to run sharply and quickly with menu refreshes, window moves, etc. I do not mind sacrificing graphics. Somone mentionted to me I have to install video drivers but the two that come up in system settings under drivers it won't let me install. ALSO : I am driving a second 19" monitor -- would that make a difference performance wise as well? Thanks in advance. Chris

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  • Tempescope Displays Weather by Recreating It

    - by Jason Fitzpatrick
    Yesterday we showed you an umbrella stand that signals raining/clear skies by color, today we have something even more interesting: an ambient desktop weather station that recreates the outside weather. The Tempescope pulls down the current weather report from Weather Underground’s API and feeds it to an Arduino board which in turn controls the device. When it’s raining, it pumps water down to simulate rain in the chamber. When there is lightening, LEDs flash. When there is cloud cover, an ultrasonic generator creates a fine mist inside the cylinder. Finally, on sunny days the entire thing glows warmly. To say that we want one would be an understatement. Hit up the link below to read more about the project, the display modes, and to peek inside the device. Prototyping “Tempescope”, An Ambient Weather Display [via Hack A Day] How To Delete, Move, or Rename Locked Files in Windows HTG Explains: Why Screen Savers Are No Longer Necessary 6 Ways Windows 8 Is More Secure Than Windows 7

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  • 3 Trends for SMBs around Social, Mobile, and Sensor

    - by Socially_Aware_Enterprise
    While I often am talking to big companies or discussing enterprise solutions. There are times when individuals ask me about Small or Medium sized business trends.  Interestingly,  the Enterprise Social, Mobile, and Sensor initiatives I regularly discuss are in fact related to even the Mom and Pop storefront. The eco-system of new service players in the Social-Mobile-Sensor space generally emerge developing partnerships with enterprises as they develop and bring economy to scale to their services for the larger market. And of course Oracle has an entire division dedicated for delivering products and support to help emerging companies compete without the need to open an industrial strength credit line.. So here are some trends that we are helping large enterprises to deploy today, but small and medium businesses should be able to take advantage of by the end of this year and starting into 2015. 1) The typical small business is generally "Localized". But the ability to be "Hyper-Localized" will come as location based services become ubiquitous. Many small businesses have one or several storefronts and theirs are typically within a single regional economic footprint. While the internet provides global reach, it will be the businesses that invest in social, mobile and local that will win in the end.  Of course I am a huge SoMoLo evangelist. The SMBs' content and targeting with platforms for Geo-Fencing, Geo-Conquesting and Path-Matching to HHI are all going to be accessible to them, if not for Mobile Apps, then via Mobile messaging in Social Networks that offer it.. Expect to be able to target FaceBook messaging not by city, but by store or mall… This makes being able to be "Hyper-Local" even more important. And with new proximity services coming online more than ever before, SMBs will operate and service customers with pinpoint accuracy right down to where they stand in an aisle. Geo-Conquesting will be huge for small players to place ads when customers pass through competitors regions. Car Dealers are doing this now.. But also of course iBeacons are now very cheap and getting easier to put in retail stores. The ability for sales to happen anywhere in the store via a mobile phone or tablet is huge, as it will give the small shop the flexibility to not have to "Guard the Register" as more or most transactions will be digital. Thus, M-Commerce and T-Commerce will change the job of cashier dramatically.. 2) Intra-Brand Advocacy, the idea now is that rather than just depend on your trusty social media manager and his team, you are going to push more and more individuals with expertise inside the organization to help manage, reach-out, and utilize social channels to manage the incoming questions and answers customers need. While for years CRM was the tool of the enterprise, today CRMs enable this now "Salesforce et al" capability to trickle throughout the company. This gives greater pressure to organize roles, but also flatten out the organization. Internal collaboration around topics and customer needs is going to be the key for SMBs to finally get serious about customer experiences. Their customers are online and in social networks. This includes not just B2C SMBs but also B2B companies as well. Don't believe me? To find the players just use hashtag #SocialSelling and you will see… 3) The Visual Networks will begin to move from Content Aggregators to Content Collaboration platforms, which means Pinterest, Instagram, Vine, & others will begin to move to add more features brands want, first marketing platforms, rather than unique brand partnerships as they do today, but this will open ways for SMBs to engage with clear brand messaging and metrics. Eventually providing more "Collaboration" between Brand and Consumer.. Don't think for a minute Facebook bought Oculus Rift so you could see your timeline in 3-D. The Social Networks I advise customers to invest in are ones that are audio and visual intrinsically. Players from SoundCloud to Pinterest are deploying ways for brands to harness their interactive visual or audio based social networks to sell ad units aka brand messaging. While the Social Media revolution is going on, the emphasis was on the social, today it more and more about the media in social, that enterprises soon small and medium businesses will be connected to. 

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  • Mobile Identity Management at SuperValu

    - by Tanu Sood
    While organizations are fast embracing BYOD (Bring Your Own Device) culture to attract and retain best talent, improve productivity, bring agility and drive down costs, SuperValu coined their own term (and trend): TYDH – Take Your Device Home. Yes, SuperValu, a Minn based, 18,000 employees strong, food retailer handed out 2,200 iPads to store directors at locations across the country. The motivation behind this reverse trend? Phillip Black, Director of Identity & Access Management at SuperValu, shared the reasoning behind this trend in his talk at last week’s Oracle OpenWorld 2012. "It gives them productivity tools to better manage their store," says Black. Intrigued? Find out more in this recently published news article. And learn more about Oracle Identity Management 11gR2 mobile- and social- ready sign-on features today. Additional Resources: Press Release: Oracle announces Identity Management 11g Release 2 On-Demand webcast: Identity Management 11gR2 Launch Oracle Magazine: Security on the Move Website: Oracle Identity Management Blog Post: Mobile and Social Sign-on with Oracle Access Management

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  • What's the best way to create animations when doing Android development?

    - by Adam Smith
    I'm trying to create my first Android game and I'm currently trying to figure out (with someone that will do the drawings and another programmer) what the best way to create animation is. (Animations such as a character moving, etc.) At first, the designer said that she could draw objects/characters and animate them with flash so she didn't have to draw every single frame of an action. The other programmer and I don't know Flash too much so I suggested extracting all the images from the Flash animation and making them appear one after the other when the animation is to start. He said that would end up taking too much resource on the CPU and I tend to agree, but I don't really see how we're supposed to make smooth animations without it being too hard on the hardware and, if possible, not have the designer draw every single frame on Adobe Illustrator. Can an experienced Android game developper help me balance this out so we can move on to other parts of the game as I have no idea what the best way to create animations is.

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  • Setting Anchor Point

    - by Siddharth
    I want to set anchor point for the sprite like cocos2d has done for their implementation. I do not found any thing like that in andengine so please provide guidance on that. I want to move the sprite on touch so I use following code but that does not work for me. super.setPosition(pX - this.getWidthScaled() / 2, pY - this.getHeightScaled() / 2); Because I touch on the corner of the image but automatically it comes at center of the image because of above code. I want to remain the touch at desire position and drag it. For me the anchor point became useful. But I don't found anything in andengine.

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  • Berkeley DB Java Edition 4.0.103 Available

    - by charles.lamb
    We'd like to let you know that JE 4.0.103 is now at http://www.oracle.com/technology/software/products/berkeley-db/je/index.html. The patch release contains both small features and bug fixes, many of which were prompted by feedback on this forum. Some items to note: New CacheMode values for more control over cache policies, and new statistics to enable better interpretation of caching behavior. These are just one initial part of our continuing work in progress to make JE caching more efficient. Fixes for proper cache utilization calculations when using the -XX:+UseCompressedOops JVM option. A variety of other bug fixes. There is no file format or API changes. As always, we encourage users to move promptly to this new release.

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  • Managing the Transition to IFRS

    As countries around the world announce and begin their move to adopting IFRS what can companies learn from those that have already travelled this path? Nigel Youell, Product Marketing Director for Performance Management Applications at Oracle talks to David Jones, Director at PWC, who has worked with multi-national companies across Europe helping them to make this transition and to improve their financial reporting in the process. This podcast offers those who have not yet started, or are currently undertaking, the IFRS journey the chance to learn from David's considerable experience on how to make IFRS an opportunity for improvement rather than just an enforced change.

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  • No Window Options in Cairo Dock

    - by Blind Fish
    I'm not even sure how to describe this properly. I'm running Cairo Dock on Ubuntu 12.04 LTS and I've noticed that I no longer have the top bar of my windows. I mean, I have the bar itself, but it's empty aside from the name of the window and the close / resize boxes. For instance, a simple Nautilus window would have, when you move the cursor to the top bar, a list of options such as View / Edit etc. I have nothing like that for any window or application. It's just solid black. This is a huge problem and I'm not sure what the issue is. Has anyone else experienced this?

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  • Collisions between moving ball and polygons

    - by miguelSantirso
    I know this is a very typical problem and that there area a lot of similar questions, but I have been looking for a while and I have not found anything that fits what I want. I am developing a 2D game in which I need to perform collisions between a ball and simple polygons. The polygons are defined as an array of vertices. I have implemented the collisions with the bounding boxes of the polygons (that was easy) and I need to refine that collision in the cases where the ball collides with the bounding box. The ball can move quite fast and the polygons are not too big so I need to perform continuous collisions. I am looking for a method that allows me to detect if the ball collides with a polygon and, at the same time, calculate the new direction for the ball after bouncing in the polygon. (I am using XNA, in case that helps)

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  • C# creating a simple snake game

    - by Guy David
    I was thinking about creating a snake game with C#, so I ran ideas in my head, and some problems came up. How can I track and output in the correct location the blocks that run after the snake's head? If the snake is built of five blocks, and the user starts going in a circle, how can I print the snake body in the right location? Also, how can I create an action that will run on the background, which will move the snake forward, no matter what the user does? What structure should my code have? (code design structure) This should be a console application, since it's the only framework I am familiar with. I am not looking for finished code, since I want to really understand how it should work.

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  • HTML Canvas: Should my app x, y values be global?

    - by Joe
    I have a large file of functions. Each of these functions is responsible for drawing a particular part of the application. My app has x and y parameters that I use in the setup function to move the whole app around in order to try different placements. So, naturally, I need to use these x and y values to anchor each function's component rendering so that everything moves in unison if the global x,y values ever change. My question is, is it bad practice/architecture to have these x,y values in the global namespace and having the each function directly access them like so? function renderFace() { var x = App.x; var y = App.y; // drawing here } is there a better way i'm missing?

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  • Remove Duplicate Second Unity Launcher on Dual Screen

    - by Eugene van der Merwe
    See attached image. On my dual screen display I have a Unity Launcher on the left hand screen and also on the right hand screen. Both work perfectly fine. I don't want two Unity Launchers. Every time I move my house to the right hand side it gets slowed down over the right launcher hampering my productivity. I have an Nvidia card with the Nvidia driver and I am using TwinView. Could somebody please tell me how to remove this extra duplicated launcher?

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