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  • Ruby vs Lua as scripting language for C++

    - by bl00dshooter
    I am currently building a game server (not an engine), and I want it to be extendable, like a plugin system. The solution I found is to use a scripting language. So far, so good. I'm not sure if I should use Ruby or Lua. Lua is easier to embed, but Ruby has a larger library, and better syntax (in my opinion). The problem is, there is no easy way I found to use Ruby as scripting language with C++, whereas it's very easy with Lua. Toughs about this? Suggestions for using Ruby as scripting language (I tried SWIG, but it isn't nearly as neat as using Lua)? Thanks.

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  • Port Android Application to Blackberry

    - by Pria
    Lets say I have an Android app that uses Google Maps and GPS.Uses custom views and timers. How much time will it require to develop it for Blackberry? What changes will be required? Can the UI be reused? I am totally new to Blackberry, though I know Java. Please help me estimate the time.

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  • Cross-browser method for hiding page elements until all content is loaded to prevent layout from appearing broken during load?

    - by Ryan
    I have an issue where due to some elements loading faster than others, the page looks broken for a few seconds at the start. An example is the CSS Pie behavior that allows me to do curved corners in IE, it appears before it becomes curved which looks bad. What would be ideal would be it somehow knowing when everything is loaded and then appear all at once, possibly including some kind of elegant visual way of not making the user feel impatient... any ideas or common tricks for doing this?

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  • How long do you keep session cookies around for?

    - by user246114
    Hi, I'm implementing a web app, which uses sessions. I'm using GWT and app engine as my client/server, but I don't think they're doing anything really different than I would do with PHP and apache etc. When a user logs into my web app, I am using HttpSession to start a session for them. I get the session id like this: // From my login servlet: getThreadLocalRequest().getSession(false).getId(); I return the sessionId back to the client, and they store it in a cookie. The tutorial I'm using sets this cookie to 'expire' in two weeks: Cookie.write("sid", theSessionId, 1000 * 60 * 60 * 24 * 14); // two weeks Here's where I'm confused: if the cookie expires in two weeks, then my user will go along using the webapp happily, only to one day browse to my site and be shown a login screen. What are my options? Can I just set no expiration time for this cookie? That way the user would have to explicitly log out, otherwise they could just use the app forever without having to log back in? Or is there a better way to do this? I can't remember sites like Twitter having ever asked me to log back in again. I seem to be permanently logged in. Do they just set no expiration? The webapp isn't protecting any sort of highly sensitive data, so I don't mind leaving a cookie that doesn't expire, but it seems like there must be a better way? This is the tutorial I'm referencing: http://code.google.com/p/google-web-toolkit-incubator/wiki/LoginSecurityFAQ Thanks

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  • Developing "Command Line" in .NET?

    - by Sergey Malyan
    Imagine a "search box" on the right top side of the UI Windows Application. When user types a desired action, a matching functionality is executed. Screen gets opened, or action gets performed. For example: user types "create" and intellisence offered next word options "client"/"product", user picks "client", and "Create New Client" screen opens up. So what I am looking for if there is a framework support for this. I assume that framework shall bind together text commands names, commands and show in intellisense. Same framework possibly could have been used in alternative "Command Line interface". I recall Microsoft had some recent framework that helps to setup "command Line Interface" environmental. It is hard to search on web for this keywords, so relying on intelligent help from you guys. Thanks in advance.

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  • ADF vs. EJB/Spring: Where should I invest my time?

    - by Arthur Huxley
    I am a junior Java SE developer, planning to become a Java Standard Edition professional. Which technologies/frameworks will be the smartest thing for me to learn? I will invest a lot of time and energy on the technologies that I eventually choose and it will be the basis for my carreer. I need to choose carefully. I have one question in particular regarding Oracle ADF: How can it be better than Spring or EJB 3.x? No offense to the ADF developers - and please excuse my ignorance - but is there a reason for using ADF other than locking customers to Oracle products? If ADF is an inferior technology I fear I will be making a mistake choosing to specialize in ADF.

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  • 2D Platformer Collision Problems With Both Axes

    - by AusGat
    I'm working on a little 2D platformer/fighting game with C++ and SDL, and I'm having quite a bit of trouble with the collision detection. The levels are made up of an array of tiles, and I use a for loop to go through each one (I know it may not be the best way to do it, and I may need help with that too). For each side of the character, I move it one pixel in that direction and check for a collision (I also check to see if the character is moving in that direction). If there is a collision, I set the velocity to 0 and move the player to the edge of the tile. My problem is that if I check for horizontal collisions first, and the player moves vertically at more than one pixel per frame, it handles the horizontal collision and moves the character to the side of the tile even if the tile is below (or above) the character. If I handle vertical collision first, it does the same, except it does it for the horizontal axis. How can I handle collisions on both axes without having those problems? Is there any better way to handle collision than how I'm doing it?

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  • Java Web Application on Tomcat - Displaying a File Uploaded by User

    - by walnutmon
    I need to display uploaded files on a web application, the flow is as follows User uploads file through web UI Validation on image Makes call to imageRepository.store( uploadedImage, user.getSite() ) The user wants the image displayed which adds <img src="${anUploadedImage.getUrl()}"/> but that is where I'm stuck, what can getUrl() do? The simple solution is to put it someplace and let Apache serve the file, but then I can't use the application to ensure that one user isn't modifying the URL to view other users files, which in this case is important

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  • Do you feel threatened by younger developers?

    - by bobsmith123
    When an opportunity for a new project in my company presented itself, I volunteered with a little bit of skepticism but a lot of excitement. I have been working with this company for 5 years on a different project in which I was a team lead for several releases. I have a consistent track record of delivering good quality projects. The new project has a team that is built from ground up and the management decided to hire new developers. The technologies used are the latest ones that are different from the previous project I had worked on (although they both are in .NET). The newer and the younger developers in the team have more experience with the latest technologies from their previous gigs. The younger developers have a lot more energy, can work 14 hours a day (they remind me of my early 20s) and live on ramen noodles. Since they are new, I feel they are obligated to show what they are made of and to prove their mettle. I feel like I am sidelined in this project and the management obviously like the younger developers as they bring more to the table. I know ageism is rampant in our field and the more I think about this, the more it makes me feel that there are very few transferable skills from one project to the other and one day you could be a team lead managing a number of developers, the next day some one you hired becomes your boss. Do you see yourself in situations like this very often? What plans do you have to make yourself valuable in a long term perspective?

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  • Browser Side Photo Editing Library

    - by echox
    Hi! Currently I'm searching for a free solution to simple edit some photos at the users browser. Resizing and Cropping would be mandatory. I'm not searching for an online service (for example SUMO or PIXLR which are great), because I want to include the software into a WYSIWYG Editor. JavaScript would be really nice, but it would have to work in IE 8. Pixastic is a great example, but works only in modern browsers (not IE 8 :-/) Any suggestions what I could use? Maybe setting up some kind of image processing service with ImageMagick and communicating with it through AJAX could also be an solution? Has anyone gained some experience with such a solution?

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  • Google Chrome and (cache or memory leaks).

    - by Alexey Ogarkov
    Hello All, I have a big problem with Google Chrome and its memory. My app is displaying to user several image charts and reloads them every 10s. In the interval i have code like that var image = new Image(); var src = 'myurl/image'+new Date().getTime(); image.onload = function() { document.getElementById('myimage').src = src; image.onload = image.onabort = image.onerror = null; } image.src = src; So i have no memory leaks in Firefox and IE. Here the response headers for images Server Apache-Coyote/1.1 Vary * Cache-Control no-store (// I try no-cache, must-revalidate and so on here) Content-Type image/png Content-Length 11131 Date Mon, 31 May 2010 14:00:28 GMT Vary * taken from here In about:cache page there is no my cached images. If i enable purge-memory-button for chrome (--purge-memory-button parameter) it`s not help. Images is in PNG24. So i think that the problem is not in cache. May be Google Chrome is not releasing memory for old images. Please help. Any suggestions. Thanks.

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  • How to determine the size of a project (lines of code, function points, other)

    - by sixtyfootersdude
    How would you evaluate project size? Part A: Before you start a project. Part B: For a complete project. I am interested in comparing unrelated projects. Here are some options: 1) Lines of code. I know that this is not a good metric of productivity but is this a reasonable measure of project size? If I wanted to estimate how long it would take to recreate a project would this be a reasonable way to do it? How many lines of code should I estimate a day? 2) Function Points. Functions points are defined as the number of: inputs outputs inquires internal files external interfaces Anyone have a veiw point on whether this is a good measure? Is there a way to **actually do this? Does anyone have another solution? Hours taken seems like it could be a useful metric but not solely. If I ask you what is a "bigger program" and give you two programs how would you approach the question? I have seen several discussions of this on stackover flow but most discuss how to measure programmer productivity. I am more interested in project size.

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  • Auto-versioning of static content with JBoss

    - by Bears will eat you
    As per the Q&A here, I'd like to implement a similar auto-versioning system for a web app running in JBoss 5. Is there anything already out there to do this sort of thing, or will I need to write something myself? To be clear: I am not using PHP. Not knowing much about PHP, I'm not sure what the Tomcat/JBoss analogs of PHP's .htaccess, etc. are. If I do have to write my own auto-versioning, where would I start? The principle is clear to me - rewriting the URL using the file's timestamp, but I don't know much about URL rewriting with JBoss/Tomcat.

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  • Does jQuery or JavaScript have the concept of classes and objects?

    - by Prashant
    I found the following code somewhere, but I am not understanding the code properly. ArticleVote.submitVote('no');return false; Is ArticleVote a class and submitVote() a function of that class? Or what does the above code mean? And is there any concept of classes and objects in jQuery or in traditional JavaScript? How to create them? Please share some reference links or code.

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  • IE 8 issue where window.close() is not occuring after winword.exe is fired to print a document

    - by Dave
    In my web application, a popup page is called using window.open javascript. There is a Print button on the page that has an onclick event that calls a printchecks() function. The code in the printchecks() function is function printchecks(){ window.print(); window.close(); } Issue is that the window.print brings up the printer dialog fine and then you select a printer. The page is actually then printed and is a reference to an rtf document that opens in winword.exe behind the scenes. For some reason in IE 8, the window.close() does not occur. This worked in IE 7. In both cases, WINWORD.EXE process appears to run in the background after the page is printed but in the case of IE 8, control is not give back to that popup page until the WINWORD.EXE process dies which takes a minute or so. I am thinking that becasue control is not being sent back to the page in IE 8, the page is not closed automatically. You can close the page after control is given back after the minute or so. This does happen in IE on both Windows XP and Windows 7. Any ideas if there is a setting in IE 8 or some other reason this may be occuring?

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  • Using include() to load different page content acts differently locally vs hosted

    - by hookedonwinter
    I have a live site that includes different php files depending on what page the user is trying to access. The header and footer are the same, but in the file, if the user requests filename1.php vs filename2.php, a different php is loaded into the content of the page. Basic CMS stuff. On the live site, it works fine. I just set up a local dev environment, and it doesn't work. The file that is supposed to load into the middle of the page instead is the only file loaded. I'm not saying this well. Here's an example: How it works live: <html> <head> Stuff </head> <body> More stuff <? include( 'some_file.php' ); ?> </body> </html> How it works locally: <? include( 'some_file.php' ); ?> Just that file loads, no other content. Any thoughts on why that one page is loading, but not the surrounding content? If I'm not explaining this well, please let me know.

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  • Advice on embedding video content via CMS - what format?

    - by ted776
    Hi, if I set up the facility for people to embed video content on their site via their CMS (using TinyMCE editor), is there any reliable cross platform video format that should be used? From what I can find online, the only reliable way to embed and stream video is using FLV. Other formats seem to have caveats, e.g codecs required or quicktime updates required. Ideally I'd like to avoid this type of situation. If it is the case that FLV is the preferred option, then that involves asking people to encode their video content to FLV before uploading, so there is an extra step required here (unless I can set up the encoding in the back end, but this might take a while to process depending on the size of the video). Does anyone have any additional advice on this? The types of video i'd imagine people will be working with is raw camera footage, so i need to figure out the easiest and most reliable way of getting the footage on to a web page.

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  • Can 3D OpenGL game written in Python look good and run fast?

    - by praavDa
    I am planning to write an simple 3d(isometric view) game in Java using jMonkeyEngine - nothing to fancy, I just want to learn something about OpenGL and writing efficient algorithms (random map generating ones). When I was planning what to do, I started wondering about switching to Python. I know that Python didn't come into existence to be a tool to write 3d games, but is it possible to write good looking games with this language? I have in mind 3d graphics, nice effects and free CPU time to power to rest of game engine? I had seen good looking java games - and too be honest, I was rather shocked when I saw level of detail achieved in Runescape HD. On the other hand, pygame.org has only 2d games, with some starting 3d projects. Are there any efficient 3d game engines for python? Is pyopengl the only alternative? Good looking games in python aren't popular or possible to achieve? I would be grateful for any information / feedback.

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  • How to get collision between two meshes in j2me 3d game

    - by Rishabh
    Hi, I am making an application for 3d ball balancing game on j2me, I need to move my 3d ball on my ball path. I can get both ball and path object as a mesh from m3g file. How I will know that my ball is in the path or not ? Is there any notification I can get for interaction of two meshes ? Thanks in advance...

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  • How do I prove to a client/advertiser that my site's analytics numbers are what I say they are?

    - by Bryson
    I have been asked to provide recommendations on "Verified Analytics" for the next iteration of my company's site. Verified to mean that when we sell ad space, it's based on a number of page-views, and the people who buy that space want a way to verify that the numbers we give them are the actual numbers we're delivering. I have turned to The Google and the only services I can find for this sort of thing revolve around Google Analytics and the sale of a domain name. I export my analytics numbers to a PDF, have Google email the PDF to my auctioneer, and they look for signs of tampering. If no signs of tampering are found they put a little "Verified" badge on the domain auction. (Here) Other than this, and something similar on another domain sales site, I haven't found anything like what I've been asked to find. Currently we are using Google Analytics, however I've been also asked to recommend a replacement for that based on the ability to be verified. I'd rather just stick with Google Analytics since we also use Google for advertising.

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  • html css image alignment

    - by computerpro007
    Hi All, I have a question regarding image alignment with CSS. For example I have created a css class as below: .link { background: url("images/image1.gif") scroll right; } and below is the markup <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>Untitled Document</title> <p class="link">This is a link</p> </head> <body> </body> </html> When I check in the browser I get the image on the text. I want it after the text i mean This is a link (this is where I want the image to appear)

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  • Django "Error: cannot import name escape" on windows

    - by Sam
    I cannot run the dev server because of this error ("Error: cannot import name escape"). I assume its because of modifications I've done to the project, but i have no idea how to find where the error is originating from to fix it. I don't import anything called escape anywhere. Update Using django-admin.py rather than the projects manage.py, don't know why... Update 2 Now manage.py is working. This may be because I had a file called email.py which was trying to import email.mime.text (ie trying to import itself) renaming to sendemail.py solved this problem.

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