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  • Box2d: Maximum possible linear velocity?

    - by Rosarch
    I think I've configured Box2d to have some sort of maximum velocity for any body, but I'm not sure. I apply an impulse like (100000000, 100000000), and the body moves just as fast as (100, 100) - which is not that fast at all. My game is a top-down 2d. Here is some code that may be relevant: private readonly Vector2 GRAVITY = new Vector2(0, 0); public void initializePhysics(ContactReporter contactReporter) { world = new World(GRAVITY, true); IContactListener contactListener = contactReporter; world.ContactListener = contactListener; } public void Update(GameTime gameTime) { // ... worldState.PhysicsWorld.Step((float)gameTime.ElapsedGameTime.TotalSeconds, 10, 10); //... }

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  • book "Programming Role Playing Games with DirectX 2nd edition" and newer DirectX api

    - by numerical25
    I got the book "Programming Role Playing Games with DirectX 2nd edition" and I notice there are things in the book that are now considered deprecated. There is a whole Section on DirectPlay. And as much as I would like to avoid this section, I am afraid it might screw up the entire engine he is trying to build. So I was just curious to know even though DirectPlay is considered deprecated by XNA, and directX10. Is it possible to use it still in DirectX 9 ??

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  • pygtk - dynamically update the widgets taking input from the gtk combo box

    - by Webrsk
    On selecting value from 1 to 10 from gtk combox box it should populate the checkbox by taking combo box value as an input. Say for example if i select 5 then 5 checkbox will be generated. It works.. But the issue is after i selected 5 now im selecting next value as 3 from combo box then there 8 checkboxes are displayed. The old 5 checkbox didnt get replaced. Is there any way to refresh the vbox(which has the checkboxes) or update to a new value. Enviroment : FC10 , Glade 2 , Python 2.5 , GTK.

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  • Facebook canvas Iframe App authentication problem.

    - by itsoft3g
    hi, I am in the conversion process of facebook app from fbml to iframe. Now i am testing using few iframe pages. $user = $facebook->require_login(); It gives the current user logged in. Once it get the variable from the facebook.com it saves in cookie by the PHP API provided by facebook). I logged out using another tab of facebook and i tryed using my app without refreshing the whole site (by just using the links inside my app). It still gives the $user variable. It indicates that user has logged in instead of user logged out. Please help me out. I want my app secured. It looks my iframe app accessible when we select "open this frame in new window". I need a solution for this too. Thanks in advance.

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  • How to create sockets in google chrome extension ?

    - by Xinus
    Hello, I created small hello world extension for google chrome http://code.google.com/chrome/extensions/getstarted.html. I need to use sockets in extension for peer to peer communication using UDP. Is there any firefox Jslib equivalent in google chrome or how we can use other languages in google chrome extension? I doubt its possible in google chrome, looking at its documentation. ? Are there any other ways to achieve p2p communication in extension? Thanks

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  • Lua, game state and game loop

    - by topright
    Call main.lua script at each game loop iteration - is it good or bad design? How does it affect on the performance (relatively)? Maintain game state from a. C++ host-program or b. from Lua scripts or c. from both and synchronise them? (Previous question on the topic: http://stackoverflow.com/questions/2674462/lua-and-c-separation-of-duties)

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  • Why isn't Google Web Toolkit more popular?

    - by gerdemb
    I've recently become intrigued with Google Web Toolkit and have started playing with it on some personal projects. I've noticed though that it doesn't seem to be very popular. For example, two major freelancing job boards (www.elance.com and www.odesk.com) list no jobs for GWT and the list of projects using it on Google's official site is pretty slim http://code.google.com/webtoolkit/app_gallery.html (compare to Django projects for example http://www.djangosites.org/). This seems odd to me as GWT has been around since 2006 and is supported by the Google brand name. It also neatly solves the problem of creating cross-browser completely dynamic websites that I haven't seen possible with any other tool. So, why the lack of acceptance?

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  • Transition domain to new web host without waiting for DNS propagation

    - by jcmoney
    I was considering switching to Amazon EC2 to host my website to handle more traffic. It seems like I would have to update DNS records to point to the new server but I was wondering if there was a way to avoid having to wait for the new DNS record to propagate. Putting the code on both hosts would not work for me since the app writes to a database pretty frequently. I thought about just using a meta redirect or php redirect on the old host to redirect to the new host ip but was wondering if there's a better more accepted way of doing this.

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  • Run Smalltalk on server without GUI?

    - by Damir Horvat
    Hi! I've got rather distinct question - I'd like to run Smalltalk on a production server without using graphical interface. Is this possible with VW or Pharo (maybe even Squeak)? I've got a VPS hosting without X and would like to have few websites running on Smalltalk, while developing them localy with full-blown Smalltalk env, including GUI. Thanks, Damir

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  • Dev Tools in IE6

    - by Dustin Digmann
    I would like to use dev tools like FireBug or the elements built into IE8 for my IE6 testing. IE9 would provide this. Before creating an IE9 environment, I thought I would check here. Do any of you have a solution for this type of problem?

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  • error C2440: 'initializing' : cannot convert from 'const wchar_t [9]' to 'LPCSTR'

    - by numerical25
    When I add the following to my code. // Define the input layout D3D10_INPUT_ELEMENT_DESC layout[] = { { L"POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D10_INPUT_PER_VERTEX_DATA, 0 }, }; UINT numElements = sizeof(layout)/sizeof(layout[0]); I get the following error 1>c:\users\numerical25\desktop\intro todirectx\msdntutorials\tutorial0\tutorial\tutorial\main.cpp(43) : error C2440: 'initializing' : cannot convert from 'const wchar_t [9]' to 'LPCSTR' The error points straight to that line of code. if i remove the code, everything compiles correctly.

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  • Building Cross Platform app - recommendation

    - by Ben
    Hi, I need to build a fairly simple app but it needs to work on both PC and Mac. It also needs to be redistributable on a disc or usb drive as a standalone desktop app. Initially I thought AIR would be perfect for this (it ticks all the API requirements), but the difficulty is making it distributable, as the app would require the AIR runtime to be installed to run. I came across Shu Player as an option as it seems to be able to package the AIR runtime with the app and do a (silent?) install. However this seems to break the T&C from Adobe (as outlined here) so I'm not sure about the legality. Another option could be Zinc but I haven't tested it so I'm not sure how well it'll fit the bill. What would you recommend or suggest I check out? Any suggestion much appreciated EDIT: There's a few more discussions on mono usage (though no real conclusion): Here and Here EDIT2: Titanium could also fit the bill maybe, will check it out. Any more comments from anyone? Ben

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  • How Does WordPress Blog Search Engines?

    - by Sarfraz
    Hello, If you go to wordpress admin-settings-privacy, there are two options asking you whether you want to allow your blog to be searched though by seach engines and this option: I would like to block search engines, but allow normal visitors How does wordpress actually block search bots/crawlers from searching through this site when the site is live?

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  • SelectedIndexChanged for programmatically created dropdownlist in ASP.NET fires multiple times.

    - by Achilles
    Consider the following: dim dropdownlist1 as new dropdownlist dim dropdownlist2 as new dropdownlist dim dropdownlist3 as new dropdownlist dropdownlist1.AutoPostBack = true dropdownlist2.AutoPostBack = true dropdownlist3.AutoPostBack = true AddHandler dropdownlist1.SelectedIndexChanged, AddressOf SomeEvent AddHandler dropdownlist2.SelectedIndexChanged, AddressOf SomeEvent AddHandler dropdownlist3.SelectedIndexChanged, AddressOf SomeEvent The SomeEvent fires as expected when any of the dropdown's selection is changed. However if say DropdownList2 has a selection made then I make a selection with either DropDownList1 or DropdownList3, then SomeEvent fires again. What is causing this behavior and how do I get just a single raising of that event? I suspect that when the viewstate for the dynamcially created dropdownlists is restored and the selection restored, then the event is fired because technically the selected index did change when the control was recreated. The reason I suspect this is that the event fires the for each dropdownlist...

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  • Profile Provider for ASP.NET That Stores Profile Info in File System

    - by LBushkin
    Does anyone know of an open source implementation of an ASP.NET ProfileProvider that stores user profile information in the file system? I would prefer to avoid writing my own if a decent implementation already exists - while the API doesn't look to complicated, I'd rather not re-invent the wheel (so to speak). Hopefully this doesn't matter, but I am using .NET 3.5 with ASP.MVC 1.0. Thanks in advance.

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  • What do you do when your team leader doesn't know something simple?

    - by leppie
    What do you do when your team leader does not know why the following is wrong: a.SomeProp = a.SomeProp; // no funny side-effects, plain old property He claims 15 years of programming experience, and 7 years of C#/.NET. To me, someone of 3-6 months experience should know this. What I have done: Tried to make him understand why it is wrong. He told me not to criticize him. Told him it's not about criticism, but project risk. He got upset with me. I have addressed the risk of this person with our manager (few weeks back). I have addressed my concerns with this person with our manager several times, since 1 month after I started there (7 months now). Currently, I just feel like just not going back to work... I hardly have any nails left, and this is really just the tip of the iceberg. As nothing has changed after I have spoken to the manager for the last 6 months, I feel like I need to make some sort of ultimatum. Do you have any suggestions? PS: Please do not make this subjective. I have no need for arguing. The level of incompetence is pretty clear. I just need some advice before going insane. Update: Thanks for all the answers (trying to update before close, buggers). I think I will forward this thread to our manager :) Update 2: I sent my manager another mail with my concerns, and a link to this question. Awaiting response.

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  • What is the "stringWithContentsOfURL" replacement for objective C?

    - by Graeme
    I found a tutorial on the net that uses the stringWithContentsOfURL command that is now deprecated as of iPhone OS 3.0. However I can't find out what I'm meant to use instead, and how to implement it. Below is the code surrounding the stringWithContentsOfURL line in case you need it for reference. NSString *urlString = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%@&output=csv", [addressField.text stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; NSString *locationString = [NSString stringWithContentsOfURL:[NSURL URLWithString:urlString]]; NSArray *listItems = [locationString componentsSeparatedByString:@","]; Thanks.

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  • How to detect running on WebSphere

    - by Pedro Guedes
    Hi, I'm building a webapp that should run on both Tomcat and WebSphere and I've managed to make almost all the differences into properties with default values that I can override for deployment on the Tomcat server. I need to do yet another override for the authentication provider bean... public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException { if(isWebSphere()){ LOG.warn("Running on WebSphere... not overriding default authentication mechanism."); return; } LOG.info("Running on Tomcat... overriding authentication provider bean ("+AUTHENTICATION_PROVIDER_BEAN+")"); if (beanFactory.containsBean(AUTHENTICATOR_BEAN) && beanFactory.containsBean(POPULATOR_BEAN) && beanFactory.containsBean(USERDETAIL_PROVIDER_BEAN)){ LdapAuthenticator authenticator = (LdapAuthenticator) beanFactory.getBean(AUTHENTICATOR_BEAN); LdapAuthoritiesPopulator populator = (LdapAuthoritiesPopulator) beanFactory.getBean(POPULATOR_BEAN); UserDetailProvider userDetailProvider = (UserDetailProvider) beanFactory.getBean(USERDETAIL_PROVIDER_BEAN); ExtendedLdapAuthenticationProvider override = new ExtendedLdapAuthenticationProvider(authenticator, populator); override.setUserDetailProvider(userDetailProvider); beanFactory.registerSingleton(AUTHENTICATION_PROVIDER_BEAN, override); } else { throw new BeanCreationException("Could not find required beans to assemble overriding object for authentication..."); } } Now my problem is how to implement the isWebSphere() method. I was thinking Class.forName("someWebSphereSpecific"), but is there a better way?

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  • add a start up item via command line (mac)

    - by adam n
    How can I add a start up item via command line on a mac? From googling, I know you have to edit ~/Library/Preferences/com.apple.loginitems.plist using defaults write com.apple.loginitems [key] [value] but i'm not sure exactly which things to edit.

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  • Should software engineers take the upcoming PE exam for software engineering?

    - by jschmier
    I realize that this question is quite similar to this one, but news of a PE exam being developed specifically for software engineering by the NCEES and IEEE has piqued my interest. Should software engineering professionals take the (upcoming) PE exam for software engineering in addition to their degree (or relevant work experience)? Note: I realize the exam being developed is still sometime away, but I'm curious about the thoughts of the professionals active on Stack Overflow.

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  • Ruby SerialPorts Gem

    - by Seth Archer
    Using Ruby SerialPorts Gem to interact with hardware. When I write a byte array to the hardware using a program called "Serial Port Monitor" the hardware responds correctly. However, when I write the same byte array using ruby it doesn't work unless I do a read request just before the write request. This device doesn't respond correctly with this sp = SerialPort.new(args) sp.write [200.chr, 30.chr, 6.chr, 5.chr, 1.chr, 2.chr, 0.chr, 244.chr] But it does if I add a read request before the write. Like this sp SerialPort.new(args) sp.read sp.write [200.chr, 30.chr, 6.chr, 5.chr, 1.chr, 2.chr, 0.chr, 244.chr] This works, but I'm at a loss as to why. I should also add that the first snippet does work occasionally maybe 1/10 of the time.

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  • Send and Receive JSON using RestClient and Sinatra

    - by lakshmanan
    Hi, I am trying to send a JSON data to a Sinatra app by RestClient ruby API. At client(client.rb) (using RestClient API) response = RestClient.post 'http://localhost:4567/solve', jdata, :content_type => :json, :accept => :json At server (Sinatra) require "rubygems" require "sinatra" post '/solve/:data' do jdata = params[:data] for_json = JSON.parse(jdata) end I get the following error /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/abstract_response.rb:53:in `return!': Resource Not Found (RestClient::ResourceNotFound) from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/request.rb:193:in `process_result' from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/request.rb:142:in `transmit' from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/net/http.rb:543:in `start' from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/request.rb:139:in `transmit' from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/request.rb:56:in `execute' from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient/request.rb:31:in `execute' from /Library/Ruby/Gems/1.8/gems/rest-client-1.5.1/lib/restclient.rb:72:in `post' from client.rb:52 All I want is to send JSON data and receive a JSON data back using RestClient and Sinatra..but whatever I try, I get the above error. I m stuck with this for 3 hours. Please help

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  • Java web frameworks

    - by mnml
    I was looking around to see if there is an equivalent to django/RoR in java. I found: Play Framework Grails Does anyone have ever tried those frameworks, or do you know any other? Are they faster than django/RoR?

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  • What does "?ref=ts" mean in a FACEBOOK APP url

    - by jozecuervo
    When Facebook drives traffic to an app, they often append &ref=whatever to the query string. This is useful for figuring out which integration points are working or not. I've figured out what some of these mean. For example: ref=bookmarks - the user clicked on a bookmark. ref=game_my_recent - the user clicked on the upper portion of the games dashboard. Does anyone know what "ref=ts" means? It accounts for a ton of traffic. I've viewed source on pages all over common FB pages and cannot find a match for ant piece of content generated by any of my apps. Same question, posted by me on the FB DEV FORUM: http://forum.developers.facebook.com/viewtopic.php?id=54866 I'm thinking I'll get better answers here ;) Thanks people, Jose

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