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• Theory of Game Interface Design

  - by anon

  Anyone know of a good book on Game Interface Design (not game play mechanics; the actual UI). I'm particular interested in theories of cognition, and how game interfaces are designed to allow the enduser efficient communication with the game (whether it in FPS, RTS, or so on). In a modern game, the amount of information conveyed to the user, the amount of choices the user can make; and the support for the user to make said decisions is simply astounding (think UIs for Starcraft II / WoW). Any insights into this would be greatly appreciated.

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• How do I design a .NET (C#) for a program that needs to run as a Windows service but also have a web

  - by hjoelr

  I am designing a piece of software that needs to operate different pieces of hardware based mainly on a schedule but it also needs to have a web interface for configuring settings, configuring the schedule, and possibly even manually controlling the hardware. I'm not sure how to design the architecture of software like this. One thought that I have had was to create a Windows service that does the communication with the hardware as well as "publishing" web services through WCF and then having an ASP.NET application that then controls the Windows service through WCF. This approach seems to be a lot of work for what I'm trying to accomplish. Could someone please give me some direction whether or not this is a good approach, and even give me a better way to do it if one exists? Thanks! Joel

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• Corporate Environment [closed]

  - by aloneguid

  How do you guys live in corporate environment? Especially talk to each other (developer to developer). I find it extremely hard as any question goes to "please book a meeting for that". Sometimes I get a chance to ask sb sth on the kitchen but that's it. Booked meetings are just stupidest thing ever, 'cos people talk about nothing specific and you have to wait days for them to happen. Weekly "scrums" are even more stupid as they usually take about 10 mins and you could do the same in 1 minute by email, no useful info or communication et all. All that leads to zero understanding of the product, no connection to customers, development in own isolated cubible, throwing out most of your code because that's not what was needed and you never know what the product is really aimed to do. Sad :(

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• Real time web site using PHP or ASP.NET

  - by Roman

  Hey Guys, I'm looking for a way to put real time features into my web site. The idea is asynchronous communication between 2 people - like a chat session. If I use the chat example - I'd like the second person to know that the first one has sent a message to him, without refreshing or doing something active on the web page. Polling is not a good idea here - so is there any other solution? the back-end could be ASP.NET or PHP (ASP.NET preferred). Help would be much appreciated, Thanks, Roman

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• Should HTTP POST be discouraged?

  - by Tomas Sedovic

  Quoting from the CouchDB documentation: It is recommended that you avoid POST when possible, because proxies and other network intermediaries will occasionally resend POST requests, which can result in duplicate document creation. To my understanding, this should not be happening on the protocol level (a confused user armed with a doubleclick is a completely different story). What is the best course of action, then? Should we really try to avoid POST requests and replace them by PUT? I don't like that as they convey a different meaning. Should we anticipate this and protect the requests by unique IDs where we want to avoid accidental duplication? I don't like that either: it complicates the code and prevents situations where multiple identical posts may be desired.

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• Twisted Spread: How to authenticate each RPC with digital signature

  - by kronat

  I have remote objects which talk each others with RPCs, using Twisted Spread. I want that objects authenticate messages, before using them, with digital signatures, but I don't know where to start to implement this. In my head, the Root object must have a public/private key pair, and the Client too. When a message is sent, a digital signature of the hash is added, and when it is received, the signature is checked. Is the Protocol part where I need to add these adds and checks? Thank you

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• SSL: can the secret key be sniffed before the actual encryption begins?

  - by Jorre

  I was looking into SSL and some of the steps that are involved to set up an encrypted connection between a server and a client computer. I understand that a server key and certificate is sent to the browser, and that a secret code is being calculated, like they say in the following video: http://www.youtube.com/watch?v=iQsKdtjwtYI around 5:22, they talk about a master secret code that is being calculated to start talking in an encrypted way. My question now is: before the connection is actually encrypted (the handshake phase), all communication between the server and the client can be sniffed by a packet sniffer. Isn't it then possible to sniff the encryption key or other data that is used to set up a secure connection?

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• Question about OOP and objects.

  - by loddn

  I have a school assignment, a Dog Show. My assignment is to create a website where vistors can display results and Judges and Secretary can admin, crud. I have a small problem one part of the assignment. The result should be based on two protokols from different judges and after that checked by the secretary before the result is displayed for the user. I have to say i'm fairly new to programming and so i need some smart suggestions on how to design and implement this. The assignment should cover both a db and c# (.net mvc). Q1: How do i create a object (result)that depends on two other objects(protocol)? Is that even needed? Q2: How to solve this in a relational db?

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• Error message when trying to insert method into touchesBegan

  - by Rob

  I am trying to create a new method within my TapDetectingImageView file and it's giving me a warning that it cannot find the method even though I have it declared in the .h file. The specific three warnings all point to the @end line in the .m file when I build it and they say: "Incomplete implementation of class 'TapDetectingImageView' ; 'Method definition for '-functionA:' not found" ; "Method definition for '-functionB:' not found" What am I missing? Am I not allowed to do this in a protocol file like TapDetectingImageView? In my .h file is: @interface TapDetectingImageView : UIImageView <AVAudioPlayerDelegate> { id <TapDetectingImageViewDelegate> delegate; } @property (nonatomic, assign) id <TapDetectingImageViewDelegate> delegate; -(void) functionA:(NSString*)aVariable; -(void) functionB:(NSString*)aVariable; @end In my .m file is: -(void)functionA:(NSString*)aVariable { // do stuff in this function with aVariable } -(void)functionB:(NSString*)aVariable { // do stuff in this function with aVariable }

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• In c++ is there any Events/delegates/interfaces/notifications! anything?

  - by Bach

  Say i have these classes ViewA and ViewB In objective C using the delegate pattern I could do @protocol ViewBDelegate{ - (void) doSomething(); } then in ViewB interface: id<ViewBDelegate> delegate; then in ViewA implementation i set the delegate: viewB.delegate = self; and now I can call in doSomething from viewB onto any that unknown type delegate. [delegate doSomething]; "C++ How to Program" has been the worse read an can't find simple examples that demonstrates basic design patterns. What i'm looking for in C++ is: events ActionScript and java either delegates or notifications in Objective C anything that allows class A, Class B and Class C to know that ClassX didSomething()!!! thanks

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• When to choose C over C++?

  - by aaa

  Hi. I have become a fond of C++ thanks to this website. Before, I programmed exclusively in C/Fortran, thinking that C++ was too slow (not anymore). Is there a reason to write new project purely in C? this is besides obvious things like low-level kernel/system components. What about intermediate things, like communication libraries, for example MPI? Is C still more portable than C++? I have messed with pretty exotic systems, like Cray, but have yet to see non-embedded system without C++. thanks

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• javascript window.location gives me a wrong url path when checking firebug

  - by Elson Solano

  I have a sample url website: http://mysite.com/ var host = window.location.protocol+"://"+window.location.hostname; $.ajax({ type:"POST", data: params, url : host+'/forms/get_data.php', success:function(data){ ...othercodeblahblah } }); Why is it that when I try to check my firebug it makes the URL weird. This is the sample output of firebug: http://mysite.com/mysite.com/forms/get_data.php With this url it now gives me: "NetworkError: 404 Not Found - http://mysite.com/mysite.com/forms/get_data.php" Shouldn't it output like http://mysite.com/forms/get_data.php ? Why is it giving me a wrong url path? Your help would be greatly appreciated and rewarded! Thank!

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• Non Technical -Got selected in Well Reputed Organisation but not getting offer letter. What to do..?

  - by Devashri

  Hi, I got selected in a well reputed company on 27th of March for .Net technology and got selection letter. I was told that I will have to join in next 15 days as my notice peroid was 15 days. And I will get my offer letter as I will submit all documents. So I submitted all the documents and I resigned from my curent organisation. But now no communication is being done. I tried to communicate with them but got no respone. Now I resigned from my previous organisation and not getting offer from new one. So what should I do now? I am just waitng for offer letter and looking for another opportunity? Can anyone suggest me the way to get my offer letter..?? I know this question is nontechnical but still I am asking because I would get suggestions or what to do as by IT Professionals who might had gone through the same condition.

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• I need a small parser (jquery) that knows if an input is URL:PORT format

  - by Johua

  You have a user input string from a textbox for example var strInput = $("#txtBox").val(); strInput has some string now. I need to now if it is of this format: IP:PORT Basically a user can input something like this: http://192.168.300.22:20000 1) Frist part (protocol): http:// always needs to be replaced by: https:// 2) Second part (everything until the ":" sign): 192.168.200.22 (or www.google.com) 3) Third part (port): everyhing after ":" (example: 9999, 100000) I step): TAKE THE INPUT var strInput = $("#txtBox").val(); II) step): PARSE THE INPUT III) results): var strProtocol = "https//"; var strIP = parsedIP; var strPORT = parsedPORT; So i need 2 know how to get the values (parsedIP and parsedPORT).

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• Fix internal links in JS

  - by FB55

  I just created a script which extracts the article out of a webpage via server-side JS. (If your interested: it's used for http://pipes.yahoo.com/fb55/expandr .) I just got a little problem with internal links. Some pages include links like: /subfolder/subpage.html What I would need to do is fixing them and setting there root, like this: protocol://secondlevel.firstlevel/subfolder/subpage.html I'm using E4X for processing the page. I don't want to show my current creepy try, it's buggy and slow. Does anybody have a solution for me?

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• How do I find the IP address of a GPRS modem?

  - by Hanno Fietz

  I want to pull data from a device that is accessed via a serial protocol and has a GPRS modem attached which should allow transparent access over an IP connection. It seems to me that this approach is upside down, because how should I know at which IP address the device currently is? Unfortunately, the device itself is rather dumb, so I can't make it send something to my server, which would reveal the current IP. For home routers on dialup lines, there's dynamic DNS services. Is there something equivalent in the mobile world? Each modem would, of course, have its phone number as a reliable address, but how does that help me? Practically all material on GPRS etc. that I can find online seems to be concerned with initiating the connection from the modem side, since that's what the system is designed for.

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• Organization of linking to external libraries in C++

  - by Nicholas Palko

  In a cross-platform (Windows, FreeBSD) C++ project I'm working on, I am making use of two external libraries, Protocol Buffers and ZeroMQ. In both projects, I am tracking the latest development branch, so these libraries are recompiled / replaced often. For a development scenario, where is the best place to keep libprotobuf.{a,lib} and zeromq.{so,dll}? Should I have my build script copy them from their respective project directories into my local project's directory (say MyProjectRoot/lib or MyProjectRoot/bin) before I build my project? This seems preferable to tossing things into /usr/local/lib, as I wouldn't want to replace a system-wide stable version with the latest experimental one. Cmake warns me whenever I specify a relative path for linking, so I would suspect copying is a better solution then relative linking? Is this the best approach? Thanks for your help!

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• WCF SERVICE gives us faulted response

  - by malik

  My service is hosted on IIS7, windows 2008 server with sql server2008 express. I am getting following error when the process takes more than 2 minutes i got this response, i m unable to find out either it is due to sql server time out or wcf time out. my sql server process is also took long. An error occurred while receiving the HTTP response to http://REMOTE/SynchronizationService_test/SyncService.svc. This could be due to the service endpoint binding not using the HTTP protocol. This could also be due to an HTTP request context being aborted by the server (possibly due to the service shutting down). See server logs for more details.

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• pagecontrol indicator custom image instead of Default

  - by iphonecool

  How i change the color of pagination dots of UIPageControl? In this link the sample code is given.But it shows 3 errors for me... 1'st ERROR: Line:CGRect currentBounds = self.bounds; Error:requst for member 'bounds' in something not a structure or union Method:-(void)drawRect: 2nd Err: same error with same line in touchesBegan method. 3rd Err:@protocol PageControlDelegate @optional (void)pageControlPageDidChange:(PageControl *)pageControl; @end Error:Expected ')' before 'PageControl' .These are the three errors occurs for me...Please help me out to solve this.. I want to change the pagecontrol indicator(dot) color... Thanks & Regards, Renuga

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• What is the best practice for accessing Model using MVVM pattern

  - by Dzenand

  I have a database that communicates with webservices with my Model (own thread) and exposes Data Objects. My UI application consists of different Views and ViewModels and Custom Controls. I'm using ServiceProvider (IServiceProvider) to access the Model and route the events to the UI thread. Communication between the ViewModels is handeled by a Messenger. Is this way to go? I was also wondering what is the best way to strucutre the DataObjects At the moment i have the DataObjects that have a hierarchy structure but does not support INotifyProperty though the children list are of type of ObservableCollection. I have no possiblity to implement notifypropertychange on the properties. I was wondering the best way of making them MVVM friendly. Implementing a partial class and adding all the properties or commands that are necessary or wrapping all the DataObjects and keep the Model list and MVVM list in sync. All thoughts and ideas are appreciated.

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• jQuery code to track clicks on outgoing links (google analystics)

  - by Tristan

  Hello, I found this on the web: $('a[href^=http]:not("[href*=://' + document.domain + ']")').click(function() { pageTracker._trackPageview('/outgoing/' + $(this).attr('href')); }); But it's not working. In my Google Analytics account there are no /outgoing/ links showing (it's been 24+ hours since I implemented it). What's wrong with this code? I'm using jQuery of course ;) (PS : i already have : <script type="text/javascript"> var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); </script> <script type="text/javascript"> try { var pageTracker = _gat._getTracker("UA MY CODE"); pageTracker._trackPageview(); } catch(err) {}</script>)

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• Capturing network traffic on Linux

  - by Quandary

  Question: I have one Windows laptop, one Linux laptop and a wireless router. Now I want to "investigate" the hotmail/windows live protocol. What I want to do is route network traffic from the windows laptop via ethernet to the linux laptop, capture it on the Linux computer, forward it wirelessly to the router, receive the hotmail response from the router on the linux computer and forward it to the windows computer. How do I do that? In essence, switching the Linux laptop between the Windows laptop and the router, to capture network traffic ? Which program is best for capturing/analysing ? Please note that for whatever reason, packet capturing with winpcap on the windows computer doesn't work...

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• Secure password transmission over unencrypted tcp/ip

  - by academicRobot

  I'm in the designing stages of a custom tcp/ip protocol for mobile client-server communication. When not required (data is not sensitive), I'd like to avoid using SSL for overhead reasons (both in handshake latency and conserving cycles). My question is, what is the best practices way of transmitting authentication information over an unencrypted connection? Currently, I'm liking SRP or J-PAKE (they generate secure session tokens, are hash/salt friendly, and allow kicking into TLS when necessary), which I believe are both implemented in OpenSSL. However, I am a bit wary since I don't see many people using these algorithms for this purpose. Would also appreciate pointers to any materials discussing this topic in general, since I had trouble finding any.

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• FtpWebResponse and StreamReader - specifying an offset

  - by AJ

  Hi, I am using the FtpWebRequest / FtpWebResponse objects in C# to download files from a server - so far, so good. I create a StreamReader object from the response stream and use a StreamWriter to create a local file. Now, the file I am reading happens to be in a very simple 'archive' format - there is a small TOC at the start of the file followed by the actual file data. I can therefore read the TOC and get a file offset and size of the data I want to download. My question is: Supposing the offset is 1024. I would use StreamReader.Read(buffer, 1024, length), but will .NET and the FTP protocol actually allow me to skip bytes 0-1023, or does the reader still go through the (relatively) slow process of downloading and discarding the bytes I don't need? This may make the difference between whether I want to use a single archive file, or a TOC file with the data files stored separately. As a bit of a secondary question, would my mileage vary using the Http classes instead of Ftp? Cheers, Adam

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• How to make 2 executables communicate in both directions in Windows

  - by user302099

  Hello. I have 2 Windows console applications, reading from standard input and writing to standard output. I'd like to assume I don't have the source code to any of them (actually I usually have the source code of one of them). I want to direct the standard output of one to the standard input of the other and vice versa, thus allowing communication (the goal is to allow two programs playing a certain game to play one against the other). How can this be done? I'm willing to do some C/C++ programming or anything else required. Oren.

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