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  • How to determine which enemy is hit and destroy it alone

    - by Jon Ferriter
    http://jsfiddle.net/5DB6K/ I have this game being made where you shoot enemies from the sides of the screen. I've got the bullets moving and being removed when they reach the end of the screen (if they didn't hit any enemy) and removing the enemy when they collide with it. //------------collision----------------// if(shot === true){ bulletY = $('.bullet').position().top + 2; bulletX = $('.bullet').position().left + 2; $('.enemy').each(function(){ if($('.enemy').hasClass('smallEnemy')){ enemyY = $(this).position().top + 7; enemyX = $(this).position().left + 7; if(Math.abs(bulletY - enemyY) <= 9 && Math.abs(bulletX - enemyX) <=9){ $(this).remove(); score = score + 40; bulletDestroy(); } } }); } However, the bullet destroys every enemy if the collision check is right which isn't what I want. I want to check if the enemy has the class of either smallEnemy, medEnemy, or lrgEnemy and then do the collision check which is what I thought I had but it doesn't seem to work. Also, the game starts to lag the more and more time goes on. Would anyone know the reason for that?

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  • Zend Linked or Dependent DropDowns

    - by LookUp Webmaster
    Hello, Does anyone knows how to properly make dependent dropdowns using the Zend Framework? I've found several ways to do so, but none of them is using the framework features. Dependent Dropdown: The options shown on the "B" , depends on the option selected on the "A" . Thanks for your help, Best regards,

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  • Lightbox effect with Jquery

    - by Sarfraz
    Hello, I just wanted to know how to create lightbox effect with JQuery, I mean let's suppose I have div, and when i click some button it shows that div at the center of the browser window across all browsers with a transparent background behind. In this div i could show just about anything including a form, image, or some text so it becomes sort of stylish alert box. So how to: Center a div across all browsers and behind this div put a transparent background covering entire screen of browser. Note: I know there are a host such effects out there, i just want to know how do i create a simple centered div with transparent background behind. So please don't suggest any pre-made solution, would be great if you could write sample code for that. Thanks

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  • CI controller function is ignored

    - by den-javamaniac
    Hi. I'm trying to pass through a CI tutorial (writing a simple forum) and I can't make a controller function called. To be more specific I have this in a controller: function __construct() { parent::Controller(); $this->load->helper('url'); } function index() { $data['title'] = "Wlcome to Gossip"; $data['heading'] = "Welcome to Gossip"; $data['query'] = $this->db->get('topic')->result(); $this->load->view('welcome', $data); } function topic() { echo 'testing...'; } and when I'm trying to access the /index.php/forum/topic/ uri it just prints out my index() function. Can any one point out what may cause the problem?

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  • Smarter println that shows the depth in the stack

    - by Hectoret
    I am using System.out.println in my code to track the execution of a program and get some useful output. This creates results like this in the console: Main function. Program starts. Method getArea. Getting values Method getSide. Side is 6 Method getArea. First value is 6 Method getSide. Side is 8 Method getArea. Second value is 8 Method getArea. Area is 48 Main function. The final area is 48 I would like to create tha method, which adds a space in front of the output every time the code goes deeper in the method call stack. For example, the same code but instead of using System.out.println, now with Misc.smartPrintln: Main function. Program starts. Method getArea. Getting values Method getSide. Side is 6 Method getArea. First value is 6 Method getSide. Side is 8 Method getArea. Second value is 8 Method getArea. Area is 48 Main function. The final area is 48 The method would have this definition: public static void smartPrintln(String string); I don't know how to implement this functionality. Any ideas how to solve this? And, could the use of a logger offer this functionality?

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  • Is this correct about ajax POST?

    - by Tommy
    Could you confirm I understand this correctly. Using POST, the file specified in xmlhttp.open("GET","ajax_test.asp",true); will not be cached (sent to \Temporary Internet Files) ? It will stay on the server only? If this is true, is the updated html file after calling ajax POST, being updated in the \Temporary Internet Files ? Am I missing any other important information of this mechanism? Thank You.

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  • How much benefit do you get from working with other developers?

    - by SnOrfus
    For whatever reason I've only ever worked solo. The job that I have now, I was under the impression that I was being hired to work underneath a senior developer and that I'd be able to learn from them/their code. This was actually one of the conditions that I had when I accepted the position (that and I was broke and needed the cash - so I would have likely taken it anyway). As it turns out, the intention of management was for me to replace that senior developer because they were contracted and relatively expensive. The question I have is, though I've learned a lot in the 2 short years I've been here, am I potentially seriously stunting my learning/progress working solo instead of working at a company with other developers?

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  • Would it be possible for web browsers to automatically update rendering engines?

    - by unknowing
    As a way to prevent the major annoyances of browser segmentation and older versions. This way the code would only need to be done for the latest version of the browser, but users could still have the functionality of the older version and not be forced to do major updates? I am sure there will be some major flaws in this, and I would like you to tell me what they are! -Obviously, people may not want this as often auto-updating is frowned upon, however Chrome does it (or at least, they used to); Without a manual check, Chrome will update itself automatically, Google said. "Google Chrome will automatically checks for updates approximately every five hours. If an update is available, it will be downloaded and applied at the next browser restart," Google said. -there is still the problem of getting users from the really old ones onto the any new browsers that have this functionality -To prevent exploits in terms of updates, maybe they could have a 7 day opt-in period before being pushed out to everyone?

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  • How to document an existing small web site (web application), inside and out?

    - by Ricket
    We have a "web application" which has been developed over the past 7 months. The problem is, it was not really documented. The requirements consisted of a small bulleted list from the initial meeting 7 months ago (it's more of a "goals" statement than software requirements). It has collected a number of features which stemmed from small verbal or chat discussions. The developer is leaving very soon. He wrote the entire thing himself and he knows all of the quirks and underlying rules to each page, but nobody else really knows much more than the user interface side of it; which of course is the easy part, as it's made to be intuitive to the user. But if someone needs to repair or add a feature to it, the entire thing is a black box. The code has some minimal comments, and of course the good thing about web applications is that the address bar points you in the right direction towards fixing a problem or upgrading a page. But how should the developer go about documenting this web application? He is a bit lost as far as where to begin. As developers, how do you completely document your web applications for other developers, maintainers, and administrative-level users? What approach do you use, where do you start, do you have a template? An idea of magnitude: it uses PHP, MySQL and jQuery. It has about 20-30 main (frontend) files, along with about 15 included files and a couple folders of some assets. So overall it's a pretty small application. It interfaces with 7 MySQL tables, each one well-named, so I think the database end is pretty self-explanatory. There is a config.inc.php file with definitions of consts like the MySQL user details, some from/to emails, and URLs which PHP uses to insert into emails and pages (relative and absolute paths, basiecally). There is some AJAX via jQuery. Please comment if there is any other information that would help you help me and I will be glad to edit it in.

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  • Click() works in IE but not Firefox

    - by Tom Andrews
    I have code which is trivial but only works in IE not Firefox. $(document).ready(function(){ $('li#first').click(); }); I have also tried: document.getElementById('first').click(); But that doesn't work either. Is this an IE bug/feature or is click() not supported in the other browsers? Thanks in advance.

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  • JSON-P and a GET resource?

    - by user246114
    Hi, If a website operating on a domain other than my own supports get requests, like: http://api.someothersite.com/v1/farms There's no way for me to access it using JSON-P right, they would have to have support for it as a query parameter? Something like: http://api.someothersite.com/v1/farms?callback=fantastic I mean, there's no way for me to use it without them explicitly supporting it, right? Thanks

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  • Questions to ask a client before beginning a website

    - by Jason
    I am aware of this question which deals with the technical aspects of website construction, but I was unable to find any place with suggestions on knowledge you must obtain from a client before undergoing a project. As someone who freelances on the side, I think this could be incredibly useful. What important questions must one ask the client (and require an answer to) before undergoing a website? or, in other words, What must you know about the project before starting it? This can range from "When do I get paid?" to "How many pages will the site be?". I believe this is relevant to programming because you must know how to communicate with your client to get all the information necessary before you can begin programming. If not, downstream changes can put a serious delay on the project from things not hashed out beforehand. Thanks!

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  • What are the requirements to consider someone as a Software Engineer? Is it just a job title? [close

    - by mike
    I am employed as a Software Engineer with a background in C# and .NET. I am trying to interface with an web API. I asked for help because I didn't know to connect to it or handle the results. Someone told me that I shouldn't consider myself a Software Engineer because I didn't know to how to do it. They said the API was well documented, required no authentication, and returned XML that I could easily parse. They said the documentation should be enough to figure out how to use the API. Isn't having a job title of Software Engineer the only consideration for being a Software Engineer?

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  • How long is a CS degree good for?

    - by Recursion
    I came upon a comment on another forum today and one user responding to another suggested that a CS degree is really only good for one through two years at the most, and after that its as if you never had it. Is this really true? is this what employers think? When I did CS I never learned anything new, we learned fundamentals like data structures, algorithms, time complexity, OS fundamentals, language characteristics. Most of this stuff has been around for the past 20 years or so.

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  • image doesnt always render on web page

    - by zsharp
    One of my png files does not always get diplayed in the browser (both in firefox and IE). In firebug the image is visible. sometimes ill even see the image start loading and halfway it fizzles. what could this be.? the image is appx 10kb.

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  • Handling "other" option in dropdown select with free text input field

    - by ted776
    Hi, I'm trying to figure out the best way to handle a dropdown list where one of the options "other" shows a hidden text field (via jQuery), where the user can then enter text. Should both the dropdown and the input field be given the same "name" attribute, then server side code runs a check on the values of each in order to know what one is the active value - e.g if the value of the select box is "other", then check the value of the text input field - if this isn't the default value ("enter text"), then it's ok to use this value and save it to the database. Is this a messy approach to this problem?

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  • Calling a webservice synchronously from a Silverlight 3 application?

    - by Lasse V. Karlsen
    I am trying to reuse some .NET code that performs some calls to a data-access-layer type service. I have managed to package up both the input to the method and the output from the method, but unfortunately the service is called from inside code that I really don't want to rewrite in order to be asynchronous. Unfortunately, the webservice code generated in Silverlight only produces asynchronous methods, so I was wondering if anyone had working code that managed to work around this? I tried the recipe found here: The Easy Way To Synchronously Call WCF Services In Silverlight, but unfortunately it times out and never completes the call. Or rather, what seems to happen is that the completed event handler is called, but only after the method returns. I am suspecting that the event handler is called from a dispatcher or similar, and since I'm blocking the main thread here, it never completes until the code is actually back into the GUI loop. Or something like that. Here's my own version that I wrote before I found the above recipe, but it suffers from the same problem: public static object ExecuteRequestOnServer(Type dalInterfaceType, string methodName, object[] arguments) { string securityToken = "DUMMYTOKEN"; string input = "DUMMYINPUT"; object result = null; Exception resultException = null; object evtLock = new object(); var evt = new System.Threading.ManualResetEvent(false); try { var client = new MinGatServices.DataAccessLayerServiceSoapClient(); client.ExecuteRequestCompleted += (s, e) => { resultException = e.Error; result = e.Result; lock (evtLock) { if (evt != null) evt.Set(); } }; client.ExecuteRequestAsync(securityToken, input); try { var didComplete = evt.WaitOne(10000); if (!didComplete) throw new TimeoutException("A data access layer web service request timed out (" + dalInterfaceType.Name + "." + methodName + ")"); } finally { client.CloseAsync(); } } finally { lock (evtLock) { evt.Close(); evt = null; } } if (resultException != null) throw resultException; else return result; } Basically, both recipes does this: Set up a ManualResetEvent Hook into the Completed event The event handler grabs the result from the service call, and signals the event The main thread now starts the web service call asynchronously It then waits for the event to become signalled However, the event handler is not called until the method above has returned, hence my code that checks for evt != null and such, to avoid TargetInvocationException from killing my program after the method has timed out. Does anyone know: ... if it is possible at all in Silverlight 3 ... what I have done wrong above?

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  • serving cached files based upon cookie?

    - by matthewsteiner
    So I realized something today. In my application, you really can't get anywhere (except the front page) unless you're logged in. And you can't be logged in without a cookie. So my front page could be cached, except the problem is if you are logged in (have a cookie set) then it should just redirect into the application. Is there a way for nginx to look for a cookie and if it finds it then deliver a cached file? Just an idea...

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  • CSS Compressor with @include support

    - by Michael
    Is there any CSS compressor that supports the @include directive? I have a bunch of css files that have one main file and are linked via those @include directives. Now that I want to compress the CSS files I'm looking for a compression tool that supports that. I cannot change the original files not to use includes because those are centrally developed ones.

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