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  • Is there any kind of established architecture for browser based games?

    - by black_puppydog
    I am beginning the development of a broser based game in which players take certain actions at any point in time. Big parts of gameplay will be happening in real life and just have to be entered into the system. I believe a good kind of comparison might be a platform for managing fantasy football, although I have virtually no experience playing that, so please correct me if I am mistaken here. The point is that some events happen in the program (i.e. on the server, out of reach for the players) like pulling new results from some datasource, starting of a new round by a game master and such. Other events happen in real life (two players closing a deal on the transfer of some team member or whatnot - again: have never played fantasy football) and have to be entered into the system. The first part is pretty easy since the game masters will be "staff" and thus can be trusted to a certain degree to not mess with the system. But the second part bothers me quite a lot, especially since the actions may involve multiple steps and interactions with different players, like registering a deal with the system that then has to be approved by the other party or denied and passed on to a game master to decide. I would of course like to separate the game logic as far as possible from the presentation and basic form validation but am unsure how to do this in a clean fashion. Of course I could (and will) put some effort into making my own architectural decisions and prototype different ideas. But I am bound to make some stupid mistakes at some point, so I would like to avoid some of that by getting a little "book smart" beforehand. So the question is: Is there any kind of architectural works that I can read up on? Papers, blogs, maybe design documents or even source code? Writing this down this seems more like a business application with business rules, workflows and such... Any good entry points for that? EDIT: After reading the first answers I am under the impression of having made a mistake when including the "MMO" part into the title. The game will not be all fancy (i.e. 3D or such) on the client side and the logic will completely exist on the server. That is, apart from basic form validation for the user which will also be mirrored on the server side. So the target toolset will be HTML5, JavaScript, probably JQuery(UI). My question is more related to the software architecture/design of a system that enforces certain rules. Separation of ruleset and presentation One problem I am having is that I want to separate the game rules from the presentation. The first step would be to make an own module for the game "engine" that only exposes an interface that allows all actions to be taken in a clean way. If an action fails with regard to some pre/post condition, the engine throws an exception which is then presented to the user like "you cannot sell something you do not own" or "after that you would end up in a situation which is not a valid game state." The problem here is that I would like to be able to not even present invalid action in the first place or grey out the corresponding UI elements. Changing and tweaking the ruleset Another big thing is the ruleset. It will probably evolve over time and most definitely must be tweaked. What's more, it should be possible (to a certain extent) to build a ruleset that fits a specific game round, i.e. choosing different kinds of behaviours in different aspects of the game. This would do something like "we play it with extension A today but we throw out extension B." For me, this screams "Architectural/Design pattern" but I have no idea on who might have published on something like this, not even what to google for.

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  • Scala - learning by doing

    - by wrecked
    coming from the PHP-framework symfony (with Apache/MySQL) I would like to dive into the Scala programming language. I already followed a few tutorials and had a look at Lift and Play. Java isn't a stranger to me either. However the past showed that it's easiest to learn things by just doing them. Currently we have a little - mostly ajax-driven - application build on symfony at my company. My idea is to just build a little project similar to this one which might gets into production in the future. The app should feature: High scalability and performance a backend-server web-interface and a GUI-client There are plenty of questions arising when I think of this. First of all: Whats the best way to accomplish a easy to maintain, structured base for it? Would it be best to establish a socket based communication between pure-scala server/client and accessing that data via Lift or is building a Lift-app serving as a server and connecting the gui-client (via REST?) the better way? Furthermore I wounder which database to choose. I'm familiar with (My)SQL but feel like a fool beeing confronted with all these things like NoSQL, MongoDB and more. Thanks in advance!

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  • Meteor Application Versioning

    - by Mahdhi
    I had been developing an Meteor JS App. I want to know how should I version the application. Currently i have set a global variable and I manually edit it. The Format I use is Major.Minor.PatchVer.Build eg. 1.0.5.25 I want the process to be automated partially. Because i can't edit the version variable for each build. i want to automate the process. How can i do it in Meteor. I searched over the Web i was not able to find a proper solution. Thank you.

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  • Development Approach: User Interface In or Domain Model Out?

    - by Berin Loritsch
    While I've never delivered anything using Smalltalk, my brief time playing with it has definitely left its mark. The only way to describe the experience is MVC the way it was meant to be. Essentially, all the heavy lifting for your application is done in the business objects (or domain model if you are so inclined). The standard controls are bound to the business objects in some way. For example, a text box is mapped to an object's field (the field itself is an object so it's easy to do). A button would mapped to a method. This is all done with a very simple and natural API. We don't have to think about binding objects, etc. It just works. Yet, in many newer languages and APIs you are forced to think from the outside in. First with C++ and MFC, and now with C# and WPF, Microsoft has gotten it's developer world hooked on GUI builders where you build your application by implementing event handlers. Java Swing development isn't so different, only you are writing the code to instantiate the controls on the form yourself. For some projects, there may never even be a domain model--just event handlers. I've been in and around this model for most of my carreer. Each way forces you to think differently. With the Smalltalk approach, your domain is smart while your GUI is dumb. With the default VisualStudio approach, your GUI is smart while your domain model (if it exists) is rather anemic. Many developers that I work with see value in the Smalltalk approach, and try to shoehorn that approach into the VisualStudio environment. WPF has some dynamic binding features that makes it possible; but there are limitations. Inevitably some code that belongs in the domain model ends up in the GUI classes. So, which way do you design/develop your code? Why? GUI first. User interaction is paramount. Domain first. I need to make sure the system is correct before we put a UI on it. There's pros and cons for either approach. Domain model fits in there with crystal cathedrals and pie in the sky. GUI fits in there with quick and dirty (sometimes really dirty). And for an added bonus: How do you make sure the code is maintainable?

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  • What advantages are conferred by using server-side page rendering?

    - by user1303881
    I am developing a web app and I have currently written the entire website in html/js/css and on the backend I have servlets that host some RESTFUL services. All the presentation logic is done through getting json objects and modifying the view through javascript. The application is essentially a search engine, but it will have user accounts with different roles. I've been researching some frameworks such as Play and Spring. I'm fairly new to web development, so I was wondering what advantages using server side page rendering would provide? Is it: Speed? Easier development and workflow? Access to existing libraries? More? All of the above?

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  • Is there an open source version check library and web app?

    - by user52485
    I'm a developer for a cross platform (Win, MacOS, Linux) open source C++ application. I would like to have the program occasionally check for the latest version from our web site. Between the security, privacy, and cross platform network issues, I'd rather not roll our own solution. It seems like this is a common enough thing that there 'ought' to be a library/app which will do this. Unfortunately, the searches I've tried come up empty. Ideally, the web app would track requests and process the logs into some nice reports (number of users, what version, what platform, frequency of use, maybe even geographical info from IP address, etc.). While appropriately respecting privacy, etc. What pre-existing tools can help solve this problem? Edits: I am looking for a reporting tool, not a dependency checker. Our project has the challenge of keeping up with our users. Most do not join the mailing list. Our project has not been picked up by major distributions -- most of our users are Windows/MacOS anyway. When a new version comes out, we have no way of informing our users of its existence. Development is moving pretty fast, major features added every few months. We would like to provide the user with a way to check for an updated version. While we're at it, we would like to use these requests for some simple & anonymous usage tracking (X users running version Y with Z frequency, etc.). We do not need/want something that auto-updates or tracks dependencies on the system. We are not currently worried about update size -- when the user chooses to update, we expect them to download the complete latest version. We would like to keep this as simple as possible.

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  • How can I build this payment receipt/booking application?

    - by Festus
    I'm planning to build a payment receipt/booking application for a media company with several branches in different locations. The application should be able to move data across the network/internet to a central database where the administrator/accountant in a different location will be able to see the result of the entire job for the day from each branch. Application will run on windows environment. Will be able to send result of the booking to a Point Of Sales printer for print output. Now, I'm confused about choosing the right programming language to accomplish this task. I'm between beginner/intermediate level in PHP, I know HTML/CSS and JavaScript. I have tried to do this in PHP but, I'm face with several challenges and I fear for the POS part since PHP application run on the web browser. I don't know if python will be best suited for this and how long will it take someone with my experience level to pick up python. Any suggestion will be highly appreciated.

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  • Free or cheap Media(image) hosting for web application

    - by Asish Bhattarai
    I am building a small social web application. I am developing it with rails. I want some cheap or free image hosting which I can use as my image repository for my website because I can't afford Amazon cloud store or something like that. Can I use flickr, imageshack or service something like that? Do they allow me to store images for my website? Suppose I wanna use pics for blogpost and I will be extracting pics from their api and show on my blog post. Is that possible? Sorry I'm beginner.

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  • Can it be a good idea to create a new table for each client of a webapp?

    - by Will
    This is semi-hypothetical, and as I've no experience in dealing with massive database tables, I have no idea if this is horrible for some reason. On to the situation: Imagine a web based application - lets say accounting software - which has 20,000 clients and each client has 1000+ entries in a table. That's 20 million rows which I know can certainly slow down complex queries. In a case like this, does it make more sense to create a new table in the database for each client? How do databases react to having 20k (or more!) tables?

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  • Appcache and jquery mobile on a CMS powered site?

    - by user793011
    Has anyone used the cache manifest to make a CMS site work offline? I've made a demo with static html files which seems to work fine, so I'm assuming it wouldn't be too hard to achieve the same thing with a CMS. The way that you tell browsers that files have changed (and so need to be downloaded again) is by adding a comment to the cache manifest file so its byte size changes. I'm not quite sure how to do this with a CMS, but maybe some sort of server cron could run periodically? Personally I'm more interested in having a site that works offline rather than achieving ideal performance, so if the file was modified every hour rather than when content actually changed that would be fine for me. If anyone has used appcache with a CMS, has anyone done so with jquery mobile at the same time? What I'm after is a fully native feel to a site that's accessible offline, in other words I want to mimic a native App. My static demo does this perfectly with jquery mobile, so again I would have thought this would be achievable in a CMS.

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  • Need to include Calendar and Email in own CRM system. Whose?

    - by PurplePilot
    I am writing a web based application that needs to have some elements of CRM in it but I cannot use an of-the-shelf CRM to do what I want. (Honestly we have been through it all and it will not work). Now while Tasks, Calls, Meetings and Notes are straightforward the idea of reinventing Mail and Calendars seems a waste of time and effort and also unproductive as most users already have their own and it simply adds to the complexity of my application and hacks users off. My thoughts are going around using Outlook and or GMail/iCal and or Mac Mail/iCal and or Thunderbird and importing the relevant data or if possible integrating it into the application. Any thoughts? Anyone got any experience of this can point me in a few directions. N.B. Not looking for an answer as too complex just some pointers and thoughts. Thanks. p.s. We did look at Sugar CRM as the basis for our project and it is useful to get best practice from but as I say it was not useable due to how we are structuring our software, not Sugar's fault.

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  • Are there any limitations to using WinRT instead of .Net?

    - by jerrykobes
    From my understanding creating an application that runs on multiple architectures requires virtualization, and virtualization reduces performance since it creates a layer of abstraction. With Windows 8 supporting both Intel and ARM architectures should we expect slower performance with a WinRT app versus a .Net app running on an Intel device? Also, will WinRT support database connectivity and active directory access?

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  • Oracle HCM World: Evite Now Available! February 4-6, Las Vegas

    - by Roxana Babiciu
    Add that personal touch by inviting your human capital management partners to HCM World with our new evite! Oracle HCM World is where HR, talent management and technology intersect. This is the event for HCM professionals, whether they are involved in recruiting and staffing, learning and development, compensation and benefits, or any other aspect of HR. Nine tracks and more than 90 sessions will unveil invaluable strategy and best practices to more than 1,500 attendees. Mark Hurd and David Rock, industry luminary and CRO of NeuroLeadership Group are both confirmed as keynote speakers. The call for papers deadline has been extended to November 15 and early bird registration ends November 22. Visit the HCM World website and Field Flash for more information.

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  • Are there any conceptual drawbacks to building a web app with C++ and MySQL?

    - by jnthnclrk
    I've inherited a pretty interesting project where there is a good opportunity to take an existing piece of software and turn it into a SaaS web app. As the project is inherited, the code base/ framework is already defined as C++ and MySQL. The app itself is compiled and run as an EXE on Windows Server. The UI is web based and the app works as a kind of server. From what I do know of modern web apps, this is perhaps an unusual choice. These days, most people seem to opt for a PHP framework or Ruby on Rails. Certainly that is the impression I get from reading blogs on the subject. So, I'm very interested to know if a C++ EXE backed by MySQL is a solid foundation for a web app, or whether we should be looking to build in another way?

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  • secure offline PC storage accessible through javascript

    - by turbo2oh
    I'm attempting to build a browser-based HTML5 application that has the ability to store data locally on a PC (not mobile device) when offline. This data is sensitive and must be secure. Of course the trick is trying to find a way to be able to access the secure data with Javascript. I've ruled out browser local storage since its not secure. Could this be accomplished with a local database? If so, where could the DB credentials be stored? Javascript obviously doesn't seem like a good option to store them since its user-readable.

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  • How could I go about creating bespoke automated e-mails?

    - by Seraphina
    I'd like some suggestions as to how to best go about creating an application which can generate bespoke automated e-mails? What sort of language would be the best one to use for this? (I'm currently familiar with Python and JavaScript) Any helpful frameworks? I would have thought that for this application to work well, some machine learning would have to be incorporated? (But this may be a bit too advanced for me at the moment!)

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  • Should my web app have its own domain name?

    - by Daniero
    I'm going to get a domain name for my personal web page. It will contain my blog, photos and other personal stuff, plus different web apps and tools that I'm working on. I have put quite a lot of work in one of the web apps, and I think it has great potential. It covers a niche in a way that no other page has done before and I can see great possibilities to expand it. Via links to webstores and ads I think it could even make some money, and if I play it right this could be the place to go when you're into the specific niche that it covers (sorry for being so vague). My question is, would it be better for a (potentially great) web app like this to have its own domain name (nameofmyapp.com) instead of being a subpage of my personal page (mypersonaldomain.com/nameofmyapp)? Is the web app more likely to be found by others, via Google etc, with its own domain name? Could a "subpage" give more attention (visitors) to my personal page? pros and cons?

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  • Design application to send messages by marking circle on the map where you want to send message

    - by jhamb
    This is question asked to me by an interviewer, in which a map of world is given, and for those country you want to send message, just marked circle on that area, and just send to all the people comes in that area. Question visual link is : Design this application The approach that I told him: Firstly build whole person's data (contacts , place information and all) Then where you mark on the map, just build a cluster of that country using Hadoop and fire the message to all the person's contact comes in that cluster. So help me for better understandings of this problem, and if have another good approach (all back-end ad front-end) , then please tell me or discuss here with me. Thanks in advance.

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  • How to clean unused app files

    - by Ando
    I've finished working on a web app and looking back at the process, I can see that a lot of extra files have been accumulated - backup css, php files, javascripts, images. I'm using an MVC workflow (codeigniter) and I would like to clean the app from unused files. There are also libraries which I've downloaded but referenced some of the files in my code, yet I've kept the unused files too. Total mess really, I'll take a note for the next app to become more organized. There is also a fair security concern regarding these sorts of situations, plus I think that it would be better to omit all the extra files when search engines are indexing the app. Has anyone been in that situation and what is the safest/fastest way to clean the app? My setup: MVC Codeigniter - Netbeans - Mac

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  • Online File Library

    - by janvdl
    I'm looking for a preferably PHP and web based system, to run on Ubuntu server. Basically it should be a "file forum" in the sense that users can register and be approved to post files to categories. Users with "read" privileges can then go through the categories and download files. Basically I sort of want a FTP-like system, but it should be as easy to manage users, categories, etc as that of a forum system like vB or phpBB. If it could have a forum look and feel that would also be great, but I don't want any discussions taking place.

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  • At what point does caching become necessary for a web application?

    - by Zaemz
    I'm considering the architecture for a web application. It's going to be a single page application that updates itself whenever the user selects different information on several forms that are available that are on the page. I was thinking that it shouldn't be good to rely on the user's browser to correctly interpret the information and update the view, so I'll send the user's choices to the server, and then get the data, send it back to the browser, and update the view. There's a table with 10,000 or so rows in a MySQL database that's going to be accessed pretty often, like once every 5-30 seconds for each user. I'm expecting 200-300 concurrent users at one time. I've read that a well designed relational database with simple queries are nothing for a RDBMS to handle, really, but I would still like to keep things quick for the client. Should this even be a concern for me at the moment? At what point would it be helpful to start using a separate caching service like Memcached or Redis, or would it even be necessary? I know that MySQL caches popular queries and the results, would this suffice?

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  • Reasons NOT to use JSF [closed]

    - by Vain Fellowman
    I am new to StackExchange, but I figured you would be able to help me. We're crating a new Java Enterprise application, replacing an legacy JSP solution. Due to many many changes, the UI and parts of the business logic will completely be rethought and reimplemented. Our first thought was JSF, as it is the standard in Java EE. At first I had a good impression. But now I am trying to implement a functional prototype, and have some really serious concerns about using it. First of all, it creates the worst, most cluttered invalid pseudo-HTML/CSS/JS mix I've ever seen. It violates every single rule I learned in web-development. Furthermore it throws together, what never should be so tightly coupled: Layout, Design, Logic and Communication with the server. I don't see how I would be able to extend this output comfortably, whether styling with CSS, adding UI candy (like configurable hot-keys, drag-and-drop widgets) or whatever. Secondly, it is way too complicated. Its complexity is outstanding. If you ask me, it's a poor abstraction of basic web technologies, crippled and useless in the end. What benefits do I have? None, if you think about. Hundreds of components? I see ten-thousands of HTML/CSS snippets, ten-thousands of JavaScript snippets and thousands of jQuery plug-ins in addition. It solves really many problems - we wouldn't have if we wouldn't use JSF. Or the front-controller pattern at all. And Lastly, I think we will have to start over in, say 2 years. I don't see how I can implement all of our first GUI mock-up (Besides; we have no JSF Expert in our team). Maybe we could hack it together somehow. And then there will be more. I'm sure we could hack our hack. But at some point, we'll be stuck. Due to everything above the service tier is in control of JSF. And we will have to start over. My suggestion would be to implement a REST api, using JAX-RS. Then create a HTML5/Javascript client with client side MVC. (or some flavor of MVC..) By the way; we will need the REST api anyway, as we are developing a partial Android front-end, too. I doubt, that JSF is the best solution nowadays. As the Internet is evolving, I really don't see why we should use this 'rake'. Now, what are pros/cons? How can I emphasize my point to not use JSF? What are strong points to use JSF over my suggestion?

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  • Windows and Linux applications to show cumulative uploads/downloads for each app, at a glance

    - by jontyc
    I've read few quite a few other threads on SU, but they have been focused on instantaneous/average bandwidths (B/sec) rather than cumulative download/upload totals for a period. Either that or they don't drill down to application level. Resource Monitor in Windows 7 only shows bandwidth. I've just been trying NetLimiter and whereas it can show total uploaded/downloaded, it's a case of having one stats window open per application, as opposed to a table showing all applications at once. Looking for applications for both Windows and Linux (Ubuntu), but they don't need to be the same.

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  • Remove Applications page on MDT 2012 Deployment Summary

    - by Ben M.
    I am using SCCM 2012 and MDT 2012 for OSD and app deployment. Because of the nature of how some of the apps need to be detected (and which changes as apps get updated) they show up with a warning sign on the Applications tab of the Deployment Summary. There is pretty much no way to get them all green check marked (not realistically in our setup anyway) so I would like to get rid of that page so that I don't have to hear about it from my teams as they deploy. Any help would be appreciated. MDT Summary screen: Applications Installed (the tab I want to remove)

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