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  • Good code architecture for this problem?

    - by RCIX
    I am developing a space shooter game with customizable ships. You can increase the strength of any number of properties of the ship via a pair of radar charts*. Internally, i represent each ship as a subclassed SpaceObject class, which holds a ShipInfo that describes various properties of that ship. I want to develop a relatively simple API that lets me feed in a block of relative strengths (from minimum to maximum of what the radar chart allows) for all of the ship properties (some of which are simplifications of the underlying actual set of properties) and get back a ShipInfo class i can give to a PlayerShip class (that is the object that is instantiated to be a player ship). I can develop the code to do the transformations between simplified and actual properties myself, but i would like some recommendations as to what sort of architecture to provide to minimize the pain of interacting with this translator code (i.e. no methods with 5+ arguments or somesuch other nonsense). Does anyone have any ideas? *=not actually implemented yet, but that's the plan.

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  • How would I go about sharing variables in a C++ class with Lua?

    - by Nicholas Flynt
    I'm fairly new to Lua, I've been working on trying to implement Lua scripting for logic in a Game Engine I'm putting together. I've had no trouble so far getting Lua up and running through the engine, and I'm able to call Lua functions from C and C functions from Lua. The way the engine works now, each Object class contains a set of variables that the engine can quickly iterate over to draw or process for physics. While game objects all need to access and manipulate these variables in order for the Game Engine itself to see any changes, they are free to create their own variables, a Lua is exceedingly flexible about this so I don't forsee any issues. Anyway, currently the Game Engine side of things are sitting in C land, and I really want them to stay there for performance reasons. So in an ideal world, when spawning a new game object, I'd need to be able to give Lua read/write access to this standard set of variables as part of the Lua object's base class, which its game logic could then proceed to run wild with. So far, I'm keeping two separate tables of objects in place-- Lua spawns a new game object which adds itself to a numerically indexed global table of objects, and then proceeds to call a C++ function, which creates a new GameObject class and registers the Lua index (an int) with the class. So far so good, C++ functions can now see the Lua object and easily perform operations or call functions in Lua land using dostring. What I need to do now is take the C++ variables, part of the GameObject class, and expose them to Lua, and this is where google is failing me. I've encountered a very nice method here which details the process using tags, but I've read that this method is deprecated in favor of metatables. What is the ideal way to accomplish this? Is it worth the hassle of learning how to pass class definitions around using libBind or some equivalent method, or is there a simple way I can just register each variable (once, at spawn time) with the global lua object? What's the "current" best way to do this, as of Lua 5.1.4?

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  • zopim chatting service like div required

    - by user260165
    if you look at this http://blog.zopim.com/ site, you will see on the bottom side a chatting service,, i actually dont want the chatting service,, i just want the div to be up on the top of all the stuff present at my site.. just like this one.. how can i have that,,, if any samples please share it.. it wud be quite helpful.. thanks...

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  • How to reference an anonymous JavaScript function?

    - by ProfK
    I'm trying to call a Page Method using a jQuery 'attached' event function, in which I like to use the closure to keep the event target local, as below, but page method calls declare several 'error' functions, and I would like to use one function for all of them. If, in the below code, I was handling an error and not success, how could I use my single, anonymous handler for all 3 error functions? $(":button").click(function () { var button = this; PageMethods.DoIt( function (a, b, c) { alert(button); }); }); This example passes an anonymous function for the success callback. There is only one of these. If I was passing an error callback, how could I use 'function (e, c, t)' for all 3 error callbacks?

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  • Wrong image dimensions when it's dynamically loaded on a page the 1st time

    - by Nikita Barsukov
    I have the following piece of Javascript code on my web-page var central_image = document.createElement("img") central_image.setAttribute("src", imgs[curr_image_no - 1]); central_image.setAttribute("name", "jpeg"); document.getElementById("photo").appendChild(central_image); central_image.onload = getDimensions(); //function that alerts image dimensions Now, when the central_image is loaded for the 1st time in Firefox, its height always equals to 0. In IE its dimensions are 28 x 30 pixels. When I reload image, its dimensions are OK in both browsers. I guess the problem is that function getDimensions() starts before image was loaded completely. How to change that?

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  • Global variables in Javascript across multiple files

    - by Goro
    Hello, A bunch of my JavaScript code is in an external file called helpers.js. Inside the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been called. I have attempted to create a global variable by defining: var myFunctionTag = true; In global scope both in my HTML code and in helpers.js. Heres what my html code looks like: <html> ... <script type='text/javascript' src='js/helpers.js'></script> ... <script> var myFunctionTag = false; ... //I try to use myFunctionTag here but it is always false, even though it has been se t to 'true' in helpers.js </script> Is what I am trying to do even doable? Thanks,

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  • building a website

    - by Ant
    Not sure if this is the right place to post this, or if it should be under programmers.stackexchange... Anywho, a couple of my friends run a business and they asked me to build them a public website. It will only be used for information about the company with soe pictures. No transactions will be involved. Right now I work for a company where I build internal websites, and do alot of backend programming in C#. I understand html, css, jquery, etc. so I feel like I am completely capable of building a website for them. However, I do not know all the basic knowledge to building one. For example, where should we host the files, what type of security issues do I need to be aware of, what's the best software to use for developing websites (I use visual studio at work), where can I find some design techniques, etc. Any help is appreciated.

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  • HTML: adjusting the font size according to the screen size

    - by Mike
    I am building an intranet website that is intended to be seen by mobile phones using one of the following resolutions: 240x320, 320x240, 360x640 and 800x352. All content is to be seen covering the full screen. No scroll should be necessary. I have developed, initially for 360x640. When this content is seen on 240x320 or 320x240 the letter is too big and the user has to scroll to see all content. Is there any way to scale the letters down or up automatically, so the content will fit on every screen size? I mean, adjusting the text font size according to the current screen resolution? thanks for any help.

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  • Offline mode app in a (HTML5) browser possible?

    - by Horace Ho
    Is it possible to build an application inside in browser? An application means: 1 Where there is connection (online mode) between the browser and an remote application server: the application runs in typical web-based mode the application stores necessary data in offline storage, to be used in offline mode (2) the application sync/push data (captured during offline mode) back to the server when it is resumed from offline mode back to online mode 2 Where there is no connection (offline mode) between the browser and an remote application server: the application will still run (javascript?) the application will present data (which is stored offline) to user the application can accept input from user (and store/append in offline storage) Is this possible? If the answer is a yes, is there any (Ruby/Python/PHP) framework being built? Thanks

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  • How do I sort feeds returned from Google Reader?

    - by Ed Marty
    When I query Google Reader for the list of subscriptions for a user, it seems to be returned in a fixed order, no matter what the order is as shown at google.com/reader. (see http://www.google.com/reader/api/0/subscription/list for the list I'm talking about) Each subscription returns a 'sortid', which Google Reader uses when the user rearranges subscriptions, by sending back a concatenation of all sortids in the new order after rearranging is finished. However, that sortid never changes. So my question is this: How do I actually get the order the subscriptions are supposed to be in? I've been using http://code.google.com/p/pyrfeed/wiki/GoogleReaderAPI as a reference, but it is lacking in this department, and I haven't found anything anywhere else either.

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  • please we need php replacement on linux.

    - by diamandiev
    PHP is just awful but atm the only cheap server technology available. If you want free hosting you are stuck with php. If you want cheap hosting too. Windows hosting is like 3x the pice. It's amazing how much effort people put into executing a task in php while they could this 10 times faster and better with a real language/server platform (asp.net). Just my 2 cents.

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  • Can a signed Java Applet/Web Start manipulate content in a cross-site IFRAME?

    - by etoleb
    Is it possible for a signed Java Applet or Web Start app to write to the DOM of an IFRAME under a different domain? Does the fact that they're a signed applet/javaws allow them to ignore browsers' standard cross-browser security? If this does work, how well is it supported across the major browsers? Thanks! EDIT: My motivation is to add a browser plugin-like tool to third-party websites I don't control. It's not required that I use Java at all---any ideas or suggestions are encouraged.

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  • Is it necessary to look, website same in all browser?

    - by metal-gear-solid
    Is it necessary to look, website same in all browser? are some client mad? isn't it need of pixel perfection ( to inch to inch match with Design) a madness? isn't it asking IE6 Pixel perfection, as of now, is a madness? Is it sin to to use JavaScript for visual enhancement, like to enable border radius in IE using Javascript and from CSS in other browsers?

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  • How can I generate an "unlimited" world?

    - by snowlord
    I would like to create a game with an endless (in reality an extremely large) world in which the player can move about. Whether or not I will ever get around to implement the game is one matter, but I find the idea interesting and would like some input on how to do it. The point is to have a world where all data is generated randomly on-demand, but in a deterministic way. Currently I focus on a large 2D map from which it should be possible to display any part without knowledge about the surrounding parts. I have implemented a prototype by writing a function that gives a random-looking, but deterministic, integer given the x and y of a pixel on the map (see my recent question about this function). Using this function I populate the map with "random" values, and then I smooth the map using a simple filter based on the surrounding pixels. This makes the map dependent on a few pixels outside its edge, but that's not a big problem. The final result is something that at least looks like a map (especially with a good altitude color map). Given this, one could maybe first generate a coarser map which is used to generate bigger differences in altitude to create mountain ranges and seas. Anyway, that was my idea, but I am sure that there exist ways to do this already and I also believe that given the specification, many of you can come up with better ideas. EDIT: Forgot the link to my question.

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  • How can someone with no experience learn how to program?

    - by Mugatu
    A friend and I have been coming up with website ideas for a couple years, mostly just jotting them down whenever we come up with a good, useful idea when browsing the web. For the past 6 months we've hired a couple different programmers to make a couple of the sites for us, but have been disappointed with how it's gone. Been too slow and too many miscommunications for our liking. So like the saying goes if you want something done right do it yourself, we're going to do it ourselves. I know nothing about programming, I've never written a line of code in my life. I consider myself very good with math and about as logical as you can get, but I have zero real-life programming knowledge. The sites we want to make are all pretty 'Web 2.0'ish', meaning user-generated content, commenting on posts, pages that change on the fly, etc. So here are some of my questions for anyone who's been there before: Is there a language you'd recommend learning first? Something that is a good indicator how most other languages work? What web programming languages do you recommend learning first based on popularity both now and the future. I don't want to learn a language that's going to be outdated by the time I'm an expert at it. Any specific books you'd recommend? Any general advice you'd give to someone literally starting at square zero for coding who plans on being in it for the long haul?

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  • Tips for documenting a web application?

    - by Pandiya Chendur
    I know that I can take my asp.net application and get it reversed to a UML document, but that doesn't tell the whole story of things like who can use what, what it calls in the way of stored procedures, what pages call what pages etc. etc. Does anyone know of an article where someone has a comprehensive way to document a web application/site? Or shall I just make up my own way?

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  • Term for releasing software with time dependant portions still unfinished.

    - by Jeremy French
    I remember a while a go on a SO podcast Jeff was talking about the bounty system and he said that they released the bounty offering code before the bounty awarding code was written as the code would not be needed for a couple of weeks. Is there a standard term for this? Agile can work in this way but it doesn’t have to. I am thinking of suggesting it to a client for something and would like to use the correct terminology along with any information backing it up as a method. Essentially the method is to release code with some functionality incomplete as the time until the incomplete functionality is needed is less that the time it will take to develop.

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