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• How to I teach my artist to do arts for games?

  - by Holm76

  So my girlfriend is an artist and I'm a programmer and we often talk about joining talents and doing some small games or other fun stuff for the different popular platforms currently out. But because I haven't really done any serious games development yet I have a hard time explaining to her how she should create or package the assets she'd make so we always end up not doing nothing about it. What I'm mostly thinking about here is when doing frame by frame animation. I know sprite sheets are used for this kind of thing but then comes questions like frames per second and stuff like like that. Not program wise but art wise. Is there a reference site or sites out there that teach someone with the skills of art how to manage and arrange the assets in sprite sheets and other stuff in words that artists understand?

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• what knowledge would I need to make a good simulation games

  - by Skeith

  I have an idea for a game like theme park but don't know how simulation games are made. I am not some noob on his first game so I appreciated constructive answers instead of "its hard, don't do it". What I want is to know how simulation game mechanics are put together. I figure it would be heaver on the AI than normal games and not knowing much about AI would like to know some programming techniques I should look into for this style game. specific techniques please not just a book on ai. what sort of architecture would be used? I guess it would have some sort of probability engine with pre designed events that are triggered based on the AI state. Would it use a FSM or be purely event driven ? Any information on how a sims game functions would be cool.

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• useradd instead of adduser,

  - by Chris at Well

  So I installed Ubuntu 13.04, set up sftp, that's all good. Setting up vsftpd for regular FTP users (we need those too, sadly. sftp isn't for good for all our purposes), i accidently used useradd to create one of the users instead of adduser. This user can't log in to frig all. I tried to delete the user and re-add it with adduser, no dice. It creates the user, but the permissions are frigged up. Any idea how I can completely undo a useradd, so that I can adduser this person and have everything coming up Milhouse again? Sorry boys, I frigged up hard.

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• The best AutoCAD 2010 Ubuntu alternative?

  - by onvas

  I'm looking for the best AutoCAD 2010 alternative for Ubuntu. Wine's support for the 2010 version isn't polished so I'm looking for Linux based similar programs. I know that this can be subjective so I'd like to know what's the best Ubuntu alternative which has the most similar, and significant features as that of AutoCAD 2010? I'm not familiar with the program because I'm researching this for my sister who is studying Aeronautical Engineering. Any help is appreciated. I'm using 12.04 64-bit on my ThinkPad R61i with 3.8GB memory and 160GB hard drive.

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• using heightmap to simulate 3d in an isometric 2d game

  - by VaTTeRGeR

  I saw a video of an 2.5d engine that used heightmaps to do zbuffering. Is this hard to do? I have more or less no idea of Opengl(lwjgl) and that stuff. I could imagine, that you compare each pixel and its depthmap to the depthmap of the already drawn background to determine if it gets drawn or not. Are there any tutorials on how to do this, is this a common problem? It would already be awesome if somebody knows the names of the Opengl commands so that i can go through some general tutorials on that. greets! Great 2.5d engine with the needed effect, pls go to the last 30 seconds Edit, just realised, that my question wasn't quite clear expressed: How can i tell Opengl to compare the existing depthbuffer with an grayscale texure, to determine if a pixel should get drawn or not?

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• Get phone number of (via mobile networks) browsing mobile device

  - by TrialUser

  I recently figured out, that the web site of my phone provider (mobile) mysteriously identifies me and automatically logs me into my account when I'm accessing with my android phone, as if it knew my phone number. (I used several browsers. When I'm using the phone as WLAN hotspot and access the same site from another device that doesn't happen.) How does my phone provider do that? On the one hand, as a programmer, I'd like to be able to do that too, but on the other hand, as a user, I'm kind of scared. What information do they have, such that they (believe they) are able to identify me just by my device? I hope this question isn't completely inappropriate for this site; feel free to add better tags — it's hard to find the right ones without knowing the Webmasters site at all.

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• Find visitors to multiple subdomains on single visit with Google Analytics

  - by mrwweb

  I'm working on a site that has quite the backlog of Google Analytics data for their site network. One of our big questions is whether people enter on one site and move to another (and if so, of course, how do these visits differ from single site visits). The hostname report (Audience Network Hostname) shows all the host names and I've setup Advanced Segments to get site-specific data. That all works great, but I'm really having a hard time figuring out how to find visits to multiple sites as defined by visiting more than one subdomain or the root site and one or more subdomains. I do see that other hostnames somehow come through when I apply one of the segments to the host name report. Which I can't say I expected. Is that the best way to see if people are visiting 2+ sites?

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• Harmful temptations in programming

  - by gaearon

  Just curious, what kinds of temptations in programming turned out to be really harmful in your projects? Like when you really feel the urge to do something and you believe it's going to benefit the project or else you just trick yourself into believing it is, and after a week you realize you haven't solved any real problems but instead created new ones or, in the best case, pleased your inner beast with no visible impact. Personally, I find it very hard to not refactor bad code. I work with a lot of bad legacy code, and it takes some deep breaths to not touch it when I have no tests to prove my refactoring doesn't not break anything. Another demon for me in user interface, I can literally spend hours changing UI layout just because I enjoy doing it. Sometimes I tell myself I'm working on usability, but the truth is just I love moving buttons around. What are your programming demons, and how do you avoid them?

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• How common are circular references? Would reference-counting GC work just fine?

  - by user9521

  How common are circular references? The less common they are, the fewer hard cases you have if you are writing in a language with only reference counting-GC. Are there any cases where it wouldn't work well to make one of the references a "weak" reference so that reference counting still works? It seems like you should be able to have a language only use reference counting and weak references and have things work just fine most of the time, with the goal of efficiency. You could also have tools to help you detect memory leaks caused by circular references. Thoughts, anyone? It seems that Python uses references counting (I don't know if it uses a tracing collector occasionally or not for sure) and I know that Vala uses reference counting with weak references; I know that it's been done before, but how well would it work?

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• Using components in the XNA Game State Management example?

  - by Zolomon

  In the game state management example at the App Hub, they say that if you want to use components in the example you can extend the GameScreen to host other components inside itself. I'm having a very hard time trying to tie this up. I tried extending the GameScreen class by adding a public property of public List<DrawableGameCompnent> components { get; set; } and then add my components to that list when I initialize the current screen as well as looping over the components in the LoadContent, Update and Draw methods. However, this doesn't feel like the correct way to go - mainly because it doesn't work when I get to the implementation of my GameplayScreen. Any thoughts?

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• How to write a network game?

  - by TomWij

  Based on Why is so hard to develop a MMO?: Networked game development is not trivial; there are large obstacles to overcome in not only latency, but cheat prevention, state management and load balancing. If you're not experienced with writing a networked game, this is going to be a difficult learning exercise. I know the theory about sockets, servers, clients, protocols, connections and such things. Now I wonder how one can learn to write a network game: How to balance load problems? How to manage the game state? How to keep things synchronized? How to protect the communication and client from reverse engineering? How to work around latency problems? Which things should be computed local and which things on the server? ... Are there any good books, tutorials, sites, interesting articles or other questions regarding this? I'm looking for broad answers, but specific ones are fine too to learn the difference.

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• Use a GUI designer or write it yourself for the desktop?

  - by TheLQ

  Writing a GUI for a program has always been a daunting, depressing, and frustrating task. It doesn't matter which language, its extremely hard to get what I want. Especially in compiled languages like Java where a change takes a minute or two to build. The result is that I increasingly use GUI designers for some of my project. Sure their is some spagetti code, but as long as I leave the configuration and a note saying "This was designed with X" I have no qualms with doing this. Is this an okay way to design a GUI? More importantly, is this what most people do? Or is the common way to just sit down and write it out?

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• In which directory to write game save files/data?

  - by Klaim

  I need a definite list of directories, one or more per platform, where to put game save files and other game generated data. Either based no the OS developer specification, or because it is common usage if there is no recommandation. Please provide one answer per platform, with different directories. Also, example of how to get the directory location in C++ or C is best, as it's the language you'll have more hard time. Locations: Player's game data (saved games, config). Shared game data (like high-score or config for all computer users). Temporary game data (aka cache directory).

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• Circle vs Edge collision detection / resolution

  - by topheman

  I made a javascript class Ball.js that handles physics interactions betweens balls as well as painting. In the v1.0, the ball vs ball collision detection and resolution is well handled. In the next version (v2), I'm trying to add edgeCollision handling. I'm having some problems, maybe you will be able to help me. All the v2 branch source code is on github repository : https://github.com/topheman/Ball.js/tree/v2 The v2 demos (where you can see the bug I will be talking about) : http://labs.topheman.com/Ball-v2/#help As you will see on the demo, I have two major problems that I'm having a really hard time to solve on Ball.js : method resolveEdgeCollision : bounce angle is inconsistent method checkEdgeCollision : if the ball's velocity (the length that it runs each frame) is higher than its diameter, eventually, it will pass through an edge, without triggering any collision Any Ideas ?...

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• Problems installing Ubuntu on unallocated space

  - by Adam

  I've been trying to install Ubuntu on some unallocated space, but I'm getting confused with the manual partition setup. I didn't want to try the other options for it suggested that everything on my drive would be erased (but I might be wrong) I have an old(ish) laptop with a 60GB hard-drive. Theres a Windows 7 partition of 30GB, followed by 20GB of unallocated space, then HP's Windows recovery partition of under 10GB. Do I need to format the empty space in windows first? What's the recommended method in this case?

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• First blog post from Surface RT using Microsoft Word 2013

  - by Enrique Lima

  One of the concerns I had in using a Surface RT was the need I have to be able to post.Recently, and not so recently, I have stopped posting. Between getting busy, carrying different devices. Well, it has been hard to do. Tried doing that with an iPad, and I can't say it didn't work, it just didn't work for me. Again, back to the concern with the Surface RT. But, looking at the App Store I started getting that same frustration I had with other platforms that left me with a feeling of "I have to compromise because I am on a SubText platform". So, I stuck to posting from Windows Live Writer (great tool!). This whole situation made me think and rethink my strategy, and then … a big DUH! What about using Microsoft Word 2013 for that? Would it work? So, here is the test!

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• What makes an application memory bandwidth bound?

  - by TheLQ

  This has been something that's been bothering me for a while: What makes an application memory bandwidth bound? For example, take this monstrosity of a computer that calculated the 5 trillionth digit of pi (and later 10 trillionth digit). I was surprised that they choose the lower but faster 98 GB RAM at 1066 MHz instead of the larger but slower 144 GB at 800 MHz. This is especially surprising considering they are using 22 TB HD array to store the results from computation; more RAM means less need for hard drives. Maybe its because I don't write applications for HPC servers, but how would RAM be the bottleneck? Are there any other non-HPC applications that usually run into this problem?

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• Move the home directory back to single partition

  - by Nathan J. Brauer

  I've seen a ton of tutorials on how to move your home directory to a separate partition. I want to do the opposite. I have two HDDs. One /home/ and the other is everything else (both drives have only one partition). I'm selling the computer but want to keep one of the hard drives. So, I'd like to move the home directory and system files back onto a single drive. Which ever way is quickest/easiest (separate partitions or all on one partition). Thank you!

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• Shader inputs in a general purpouse engine

  - by dreta

  I'm not familiar with SDKs like Unity or UDK that much, so i can't check this off hand. Do general purpouse engines allow users to create custom uniform variables? The way i see it, and the way i have implemented it in an engine i'm writing to learn 3D, is that there is a "set" of uniforms provided by the engine and if you want to write a custom shader then you utilize uniforms you need to create a wanted effect. Now, the thing is, first of all i'm not an artist, second of all, i didn't have a chance to create complex scenes yet. So my question is, is it common practice to define variables that the engine provides and only allow the user to work with what they're given? Allowing users to add custom programs and use them where they want is not hard, but i have issues imagining how you'd go about doing the same for uniforms.

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• What's the best way to recruit talented female developers?

  - by Molly Wally

  I work on a team with a dozen men. They're great. I like them and all, but can't help wonder why it's so hard to find other technical women. I know they exist because I've met them at conferences, read their blogs, and see them on campus. My guess is there's something about our team that keeps them away. How can we recruit talented women without resorting to gimmicks? I'm not looking for complete gender parity, but why is it that some teams have a 50/50 gender split and ours is completely lopsided?

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• Why has wireless disappeared after my 12.10 upgrade?

  - by Shay Guy

  I just upgraded to 12.10 on my Lenovo B570 laptop. NetworkManager isn't displaying a submenu for wireless connections at all, even though I downloaded the update through the wireless connection. This displeases me. Stuff I've tried includes: $ sudo modprobe wl FATAL: Module wl not found. $ sudo lspci -nn | grep "BCM" 02:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01) $ rfkill list all 0: ideapad_wlan: Wireless LAN Soft blocked: no Hard blocked: no ETA: linux-headers-generic is already the newest version, and what I get when reinstalling bcmwl-kernel-source includes the following, near the end. DKMS: install completed. ERROR: Module b43 does not exist in /proc/modules ERROR: Module b43legacy does not exist in /proc/modules ERROR: Module ssb does not exist in /proc/modules ERROR: Module bcm43xx does not exist in /proc/modules ERROR: Module brcm80211 does not exist in /proc/modules ERROR: Module brcmfmac does not exist in /proc/modules ERROR: Module brcmsmac does not exist in /proc/modules ERROR: Module bcma does not exist in /proc/modules FATAL: Module wl not found.

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• What do I need to know about Data Structures and Algorithms in the "real" world

  - by Ray T Champion

  I just finished the data structures and algorithms course in school , I took it during the summer so 6wks course vs a 16 wk course during the regular semester. So not only was the course hard but it was really really really fast. My question is what do I need to know about data structures in the real world? I understand what they do and how they work, for the most part, but I had a real tough time coding them , I wouldn't be able to write the code for a binary tree class or a balanced tree class from scratch .... Is that bad? should I retake it , or is knowledge of how they work sufficient, without being able to write the classes from scratch?

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• What is your most unusual javascript concept you've ever seen ?

  - by Cybrix

  Hi, I've learned javascript at school but since I'm working with it and study about it every day, I've found very particular aspect of javascript that I didn't know about. Which at first, was very hard to understand for me and finally, I found it very usefull and easy to implement. And in the final, it gives to my code some kind of "beauty". An example I've once seen: function getter( input ) { result = { foo1 : 'bar1', foo2 : 'bar2', foo3 : 'bar3' }[input] || input || "default"; return result; } Do you guys have other examples of particular use you make of Javascript ? Thank you PS: I use the term particular use because it might be unusual for any Javascript beginner. I believe this question is most likely to belong to the community wiki.

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• Ubuntu doesn't find hdds with higher clock rates

  - by user136243

  I dual boot windows 7 64-bit and ubuntu 13.10 64-bit on separate disks, and utilize some overclocking from the BIOS. Windows works fine, however ubuntu can't seem to find any hard drives, except for at stock cpu speeds. While attempting to boot it says Gave up waiting for root device... and ALERT! /dev/sdb7 does not exist. Dropping to shell! A bootable usb stick still works, but gparted doesn't detect any other drives. Have tried: Boot-repair Changing SATA mode in BIOS Newer kernels Older ubuntu versions Not sure it's relevant, but the motherboard is a Gigabyte GA-A75M-UD2H with the newest BIOS version, the CPU an AMD Llano. This is hardly a fatal error, but it's inconvenient to change BIOS settings whenever I want to switch OS, and furthermore I'm quite curious about why it won't work. I'd appreciate any insight into what the actual problem is. So how can I resolve this issue ?

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• Is there a name for this issue?

  - by Epicmaster

  I was just talking to my partner about how hard it is to personally judge how good your product is after a while because you use it so often. You literally spend hours on your computer doing nothing but work on this Consumer Facing application, and you start to feel a little fatigue of using it over and over and over, at least a hundred times a day. You get scared this fatigue may mean the product you are building may have the same effect on the users and might mean you are doing something wrong. All i'm asking is, is there a name for this in product development? For the fact that as a designer+ programmer+everything else, your product might not suck as much as you think simply because you spend way to much time with it, or a variation of this?

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