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• One good reason for a rewrite

  - by Supermighty

  I have a personal web project I cut my teeth on learning how to program. I wrote it in PHP and learned as I went. I eventually I re-factored it to use MVC and removed all mixing of php/html. Right now it has no users, save myself, and it makes no money. I have a strong desire to rewrite the entire app. Which really isn't that large of an app. I have a lot of reasons why I should not rewrite it. I know that I should move forward. It's a working app now and it will only set me back to rewrite it. But I can't shake this feeling that I would be better off using a different programming language in the long run. That I'd enjoy it more. That I'd feel comfortable with it. I feel like my one good reason to rewrite my app is that I have a gut feeling that I should. PHP seems like a hack thrown together. I want to use a language that feels more elegant to me. Any feedback you have would be welcome.

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• touch detection of non-rectangular sprites (cocos2d)

  - by hogni89

  What is the correct way to implement a non-rectangular sprite in Cocos2d? I am working on a jigsaw puzzle. And therefor do our sprites have some strange forms (Jigsaw puzzle bricks). As of now, we have implemented the "detect" this way: - (void)selectSpriteForTouch:(CGPoint)touchLocation { CCSprite * newSprite = nil; // Loop array of sprites for (CCSprite *sprite in movableSprites) { // Check if sprite is hit. // TODO: Swap if with something better. if (CGRectContainsPoint(sprite.boundingBox, touchLocation)) { newSprite = sprite; break; } } if (newSprite != selSprite) { // Move along, nothing to see here // Not the problem } } - (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event { CGPoint touchLocation = [self convertTouchToNodeSpace:touch]; [self selectSpriteForTouch:touchLocation]; return TRUE; } I know that the problem is in the keyword "sprite.boundingBox". Is there a better way of implementing this, OR is it a limit when using sprites based on .png's? If so, how should I proceed? I'm new to iPhone and game development :D

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• Importing an existing project into Git

  - by Andy

  Background During the course of developing our site (ASP.NET), we discovered that our existing source control (SourceGear Vault) wasn't working for us. So, we decided to migrate to Git. The translation has been less than smooth though. Our site is broken up into three environments DEV, QA, and PROD. For tho most part, DEV and the source control repo have been in sync with each other. There is one branch in the repo, if a page was going to be moved up to QA then the file was moved manually, same thing with stuff that was ready for PROD. So, our current QA and PROD environments do not correspond to any particular commit in the master branch. Clarification: The QA and PROD branches are not currently, nor have they ever been in source control. The Question How do I move QA and PROD into Git? Should I forget about the history we've maintained up to this point and start over with a new repo? I could start with everything on PROD, then make a branch and pull in everything from QA, and then make another branch off of that with DEV. That way not only will the branches reflect the differences in the environments, they'll be in the right order chronologically with the newest commits in the DEV branch. What I've tried so far I thought about creating a QA branch off of the current master and using robocopy to make the working folder look like the current QA environment. This doesn't work because the new commit from QA will remove new files from DEV and that will remove them when we merge up, I suspect there will be similar problems if I started QA at an earlier (though not exact) commit from DEV.

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• Is this the most effect simple way to display a moving image? SDL2

  - by user36324

  I've looked around for tutorials on SDL2, but there isnt many so I am curious i was messing around and is this an effective way to move an image. One problem is that it drags along the image to where it moves. #include "SDL.h" #include "SDL_image.h" int main(int argc, char* argv[]) { bool exit = false; SDL_Init(SDL_INIT_EVERYTHING); SDL_Window *win = SDL_CreateWindow("Hello World!", 100, 100, 640, 480, SDL_WINDOW_SHOWN); SDL_Renderer *ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC); SDL_Surface *png = IMG_Load("character.png"); SDL_Rect src; src.x = 0; src.y = 0; src.w = 161; src.h = 159; SDL_Rect dest; dest.x = 50; dest.y = 50; dest.w = 161; dest.h = 159; SDL_Texture *tex = SDL_CreateTextureFromSurface(ren, png); SDL_FreeSurface(png); while(exit==false){ dest.x++; SDL_RenderClear(ren); SDL_RenderCopy(ren, tex, &src, &dest); SDL_RenderPresent(ren); } SDL_Delay(5000); SDL_DestroyTexture(tex); SDL_DestroyRenderer(ren); SDL_DestroyWindow(win); SDL_Quit(); }

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• How can I make smoother upwards/downwards controls in pygame?

  - by Zolani13

  This is a loop I use to interpret key events in a python game. # Event Loop for event in pygame.event.get(): if event.type == QUIT: pygame.quit() sys.exit() if event.type == pygame.KEYDOWN: if event.key == pygame.K_a: my_speed = -10; if event.key == pygame.K_d: my_speed = 10; if event.type == pygame.KEYUP: if event.key == pygame.K_a: my_speed = 0; if event.key == pygame.K_d: my_speed = 0; The 'A' key represents up, while the 'D' key represents down. I use this loop within a larger drawing loop, that moves the sprite using this: Paddle1.rect.y += my_speed; I'm just making a simple pong game (as my first real code/non-gamemaker game) but there's a problem between moving upwards <= downwards. Essentially, if I hold a button upwards (or downwards), and then press downwards (or upwards), now holding both buttons, the direction will change, which is a good thing. But if I then release the upward button, then the sprite will stop. It won't continue in the direction of my second input. This kind of key pressing is actually common with WASD users, when changing directions quickly. Few people remember to let go of the first button before pressing the second. But my program doesn't accommodate the habit. I think I understand the reason, which is that when I let go of my first key, the KEYUP event still triggers, setting the speed to 0. I need to make sure that if a key is released, it only sets the speed to 0 if another key isn't being pressed. But the interpreter will only go through one event at a time, I think, so I can't check if a key has been pressed if it's only interpreting the commands for a released key. This is my dilemma. I want set the key controls so that a player doesn't have to press one button at a time to move upwards <= downwards, making it smoother. How can I do that?

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• shrink ext4 partition

  - by user276851

  My question is similar to Move ext4 partition, but the challenge I couldn't figure out is how to shrink a partition from the start. So suppose originally the partition (with raid) is like this. (************** /dev/md127 ***************) After resizing, I want to achieve like this. (*** unallocated ***)(**** /dev/md127 ****) Note, I cannot use gparted, and parted does not support ext4. The commands I have tried so far, % resize2fs -p /dev/md127 1676G # <== This is good. % lvreduce -L 1676G /dev/md127 Path required for Logical Volume "md127" Please provide a volume group name Run `lvreduce --help' for more information. Failed here, I guess it may be because the underlying partition is primary and the lvreduce only works on logical? Anyway, no idea. Then after that, I am thinking to create another partition right after this one, copy the data to that partition, and remove this one, like. 1. (************** /dev/md127 ***************) 2. (**** /dev/md127 ****)(*** new partition **) 3. (*** unallocated ****)(**** /dev/md127 ****) Thanks for the help.

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• Deal Registration Moves to Oracle Partner Store (OPS)- The Four Action Items for Partners

  - by Richard Lefebvre

  In November 2012, Oracle’s partner deal registration process will move to the Oracle Partner Store (OPS). During this time, OPS will become the single source for partners to register deals, obtain deal status, and place orders. What will partners need to do? 1. Request an OPS Account – If your company is new to OPS the first thing you need to do is request an account (if your company already has an OPS account, go to step 2). It’s important to have the person who will be managing your OPS account make this request as soon as possible. They will be set up as your company’s primary administrator. 2. Set-Up Users in OPS – Setup of users can start immediately, and will be handled by the primary OPS administrator at your company. The process is simple, but all existing users of Global PRM (Partner Relationship Management) deal registration will need to be set up in OPS before November 14, 2012.  3. Review/Action Any Registrations Pending Submission in PRM – Prior to November 14, 2012, all pending registrations should be submitted in the existing PRM system. It is important that this step is complete so registrations will not need to be re-entered when the system is moved to OPS on November 17, 2012. Registrations pending submission are easily identified on the registration listing screen with either “Incomplete” or “Returned to Partner” in the status column.  4. Attend Training – Oracle will offer multiple VAD and VAR training sessions beginning October 29, 2012. It is recommended that all users attend one of these important sessions.  Detailed instructions on each of these tasks can be found on the OPS Information Page. OPS will offer several enhancements to the deal registration process, including: Simplified Registration Form Easier Product Selection Expanded Browser Support Shared Registration Visibility Between VAD and VAR Pre-set Customer Selection From Partner Ordering Base Best Regards, Titina Ott Vice President, Worldwide A&C Systems And Business Processes 

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• Web hosting company basically forces me to use their domain name [closed]

  - by Jinx

  I've recently stumbled upon an unusual problem with one of hosting companies called giga-international.com. Anyway, I've ordered com.hr domain from Croatian domain name registration company, and my client insisted on using this host provider as couple of his friends already are hosted with them. I thought something was fishy when the first result on Google for Giga International was this little forum rant instead of their webpage. When I was checking their services they listed many features etc... space available, bandwidth etc. I just wanted to check how much ram do I get for my PHP scripts so I emailed them, and they told me that was company secret. Seriously? Anyway, since my client still insisted on hosting with them I've bought their Webspace package. During registration I had to choose free domain name because I couldn't advance registration without it. Nowhere was said, not even in general terms and conditions that I wouldn't be able to change that domain name. At least not for double the price of domain name per year. They said I can either move my domain name over to them (and pay them domain registration), or pay them 1 Euro per month for managing a DNS entry. On any previous hosting solution I was able to manage my domain names just by pointing my domain to their name servers, and this is something completely new and absurd for me. They also said that usual approach is not possible because of security and hardware limitations. I'd like to know what you guys think about this case, and should I report, and where should I report this case. In short. They forced me to register free domain name which doesn't suit my needs in order to register for their webspace package, and refuse to change domain name for my account until I either transfer domain to them or pay them DNS management which costs double the price of the domain name per year.

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• public_html permissions for local development

  - by maGz

  I know this question has popped up a couple times, but I can't seem to find a definitive answer to my issue, so please bear with me. I have Ubuntu Server 12.04 setup in VirtualBox for PHP development and testing (Drupal plus other PHP sites using Yii framework). My question is in 3 parts... 1) If I create a public_html folder under /home/myuser, do I need to give ownership of that folder to the Apache www-data group? If so, are there any specific permissions I should be setting? 755? (Btw, I am following this guide to create the public_html directory and set up multiple virtual hosts per site I create and test) I previously had all of my sites under /var/www, but ran into massive permission denied errors whenever I tried to sFTP to it, either through FileZilla or PhpStorm. This is what I had previously done: sudo chgrp www-data /var/www sudo chmod -R 775 /var/www sudo chmod -R g+s /var/www sudo usermod -G www-data [my_ftp_user] 2) The second part of my question is this: If I create my PHP project and files in Windows through PhpStorm, and then upload via sFTP, will permissions get affected? 3) Once I am satisfied with my developed project, would it be advisable to move and test them under /var/www to see how it would fair in a production-ish environment? I would really appreciate the help and advice here. I'm learning more as I go along, but dealing with Linux files and permissions is a bit of a new ballgame for me! Thank you

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• Pull Request Conversations, Inline Diff Enhancements

  [Do you tweet? Follow us on Twitter @matthawley and @adacole_msft] We deployed a new version of the CodePlex website today. Pull Request Conversations Previously, the only way for project members and users who submitted pull requests to converse was via e-mail. This complicated the review process and made conversations isolated and difficult to track. For this release, we’ve added functionality that enables you to have those same conversations within the pull request page. When you view a pull request, you’ll now see “Comments” and “Changes” tabs, with current comments displayed. Inline Diff Enhancements We tweaked the inline diff experience to make it easier to traverse diff blocks. When you open up the inline diff experience, you’ll now see up and down arrows. To move between the diff blocks, you can use those arrows or utilize the available keyboard shortcuts. Lastly, we have also brought the inline diff experience to the source control changes page for project and fork changesets. You can see both enhancements live by viewing the associated pull request or changeset changes on WikiPlex. The CodePlex team values your feedback. We are frequently monitoring Twitter, our Discussions, and Issue Tracker. If you have not visited the Issue Tracker recently, please take a few minutes to suggest or vote on a feature you would like to see implemented.

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• Calculating distance from viewer to object in a shader

  - by Jay

  Good morning, I'm working through creating the spherical billboards technique outlined in this paper. I'm trying to create a shader that calculates the distance from the camera to all objects in the scene and stores the results in a texture. I keep getting either a completely black or white texture. Here are my questions: I assume the position that's automatically sent to the vertex shader from ogre is in object space? The gpu interpolates the output position from the vertex shader when it sends it to the fragment shader. Does it do the same for my depth calculation or do I need to move that calculation to the fragment shader? Is there a way to debug shaders? I have no errors but I'm not sure I'm getting my parameters passed into the shaders correctly. Here's my shader code: void DepthVertexShader( float4 position : POSITION, uniform float4x4 worldViewProjMatrix, uniform float3 eyePosition, out float4 outPosition : POSITION, out float Depth ) { // position is in object space // outPosition is in camera space outPosition = mul( worldViewProjMatrix, position ); // calculate distance from camera to vertex Depth = length( eyePosition - position ); } void DepthFragmentShader( float Depth : TEXCOORD0, uniform float fNear, uniform float fFar, out float4 outColor : COLOR ) { // clamp output using clip planes float fColor = 1.0 - smoothstep( fNear, fFar, Depth ); outColor = float4( fColor, fColor, fColor, 1.0 ); } fNear is the near clip plane for the scene fFar is the far clip plane for the scene

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• Translating an object along its heading

  - by Kuros

  I am working on a simulation that requires me to have several objects moving around in 3D space (text output of their current position on the grid and heading is fine, I do not need graphics), and I am having some trouble getting objects to move along their relative headings. I have a basic understanding of vectors and matrices. I am using a vector to represent their position, and I am also using Euler Angles. I can translate one of my entities with a matrix along whatever axis, and I can alter their heading. For example, if I have an entity at (order is XYZ) 1, 1, 1, with a heading of 0, I can apply a translation matrix to get them to talk to 1, 1, 2 fine. However, if I change their heading to 270, they still walk to 1, 1, 3, instead of 2, 1, 2 as I desire. I have a feeling that my problem lies in not translating my matrix from world space to object space, but I am not sure how to go about that. How can I do this? Addition: I am using 3D vectors to represent their current position and their heading (using the three euler angles). For now, all I want to do is have an entity walk in a square, reporting their current position at each step. So, assuming it starts at 10, 10, 10 I want it to walk as follows: 10,10,10 -> 10, 10, 15 10, 10, 15 -> 5, 10, 15 5, 10, 15 -> 5, 10, 10 5, 10, 10 -> 10, 10, 10 My 1 Z unit translation matrix is as follows: [1 0 0 0] [0 1 0 0] [0 0 1 1] [0 0 0 1] My rotation matrix is as follows: [0 0 1 0] [0 1 0 0] [-1 0 0 0] [0 0 0 1]

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• Book Giveaway: We Have 10 Free Copies of the 4-Hour Chef (The Simple Path to Cooking Like a Pro, Learning Anything, and Living the Good Life)

  - by The Geek

  The 4-Hour Chef isn’t just a cookbook. It’s a choose-your-own-adventure guide to the world of rapid learning from the best-selling author of the 4-Hour Workweek, and we’ve got 10 free copies for How-To Geek readers. Want more information? Here’s the description of the book, from the Amazon page. The 4-Hour Chef is a five-stop journey through the art and science of learning: 1. META-LEARNING. Before you learn to cook, you must learn to learn. META charts the path to doubling your learning potential. 2. THE DOMESTIC. DOM is where you learn the building blocks of cooking. These are the ABCs (techniques) that can take you from Dr, Seuss to Shakespeare. 3. THE WILD. Becoming a master student requires self-sufficiency in all things. WILD teaches you to hunt, forage, and survive. 4. THE SCIENTIST. SCI is the mad scientist and modernist painter wrapped into one. This is where you rediscover whimsy and wonder. 5. THE PROFESSIONAL. Swaraj, a term usually associated with Mahatma Gandhi, can be translated as “self-rule.” In PRO, we’ll look at how the best in the world become the best in the world, and how you can chart your own path far beyond this book. Still not sold? There’s more information and pictures over on the Amazon page for the book. The 4-Hour Chef: The Simple Path to Cooking Like a Pro, Learning Anything, and Living the Good Life Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It How To Delete, Move, or Rename Locked Files in Windows HTG Explains: Why Screen Savers Are No Longer Necessary

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• Looking for an example of how a software project can be managed/deployed

  - by rguilbault

  My company is evaluating adopting off-the-shelf ALM products to aid in our development lifecycle; we currently use our own homegrown solutions to manage requirements gathering, specification documentation, testing, etc. One of the issues I am having is understanding how to move code between stages of development. We have what we call a pipeline, which consists of particular stops: [Source] - [QC] - [Production] At the first stop, the developer works out a solution to some requested change and performs individual testing. When that process is complete (and peer review has been performed), our ALM system physically moves the affected programs from the [Source] runtime environment to the [QC] runtime environment. This movement of code is triggered by advancing the status of the change request to match the stage of the pipeline. I have been searching the internet for a few days trying to find how the process is accomplished elsewhere -- I have read a bit about builds, automated testing, various ALM products, etc. but nowhere does any of this state how builds interact with initial change requests, what the triggers are, how dependencies are managed, how the various forms of testing are accommodated (e.g. unit testing, integration testing, regression testing), etc. Can anyone point me to any resources detailing specific workflows or attempt to explain (generically) how a change could/should be tracked and moved though the development lifecycle? I'd be very appreciative. Note: I've cleaned up the question to hopefully make it easier to understand. Also, I found another question (which I can't find now) that referenced this book, which sounds like it might be exactly what I am looking for -- not sure if I want to shell out the cash for it, though.

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• OpenGL ES multiple objects not being rendered

  - by ladiesMan217

  I am doing the following to render multiple balls move around the screen but only 1 ball is seen to appear and function. I don't know why the rest (count-1) balls are not being drawn public void onDrawFrame(GL10 gl) { // TODO Auto-generated method stub gl.glDisable(GL10.GL_DITHER); gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT); gl.glMatrixMode(GL10.GL_MODELVIEW); gl.glClientActiveTexture(DRAWING_CACHE_QUALITY_HIGH); gl.glLoadIdentity(); for(int i=0;i<mParticleSystem.getParticleCount();i++){ gl.glPushMatrix(); gl.glTranslatef(mParticleSystem.getPosX(i), mParticleSystem.getPosY(i), -3.0f); gl.glScalef(0.3f, 0.3f, 0.3f); gl.glColor4f(r.nextFloat(), r.nextFloat(), r.nextFloat(), 1); gl.glEnable(GL10.GL_TEXTURE_2D); mParticleSystem.getBall(i).draw(gl); gl.glPopMatrix(); } } Here is my void draw(GL10 gl) method public void draw(GL10 gl){ gl.glEnable(GL10.GL_CULL_FACE); gl.glEnable(GL10.GL_SMOOTH); gl.glEnable(GL10.GL_DEPTH_TEST); // gl.glTranslatef(0.2f, 0.2f, -3.0f); // gl.glScalef(size, size, 1.0f); gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertBuff); gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); gl.glDrawArrays(GL10.GL_TRIANGLE_FAN, 0, points/2); gl.glDisableClientState(GL10.GL_VERTEX_ARRAY); }

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• How to Use Vim-Style Keyboard Shortcuts for OS X Tab Navigation

  - by The Geek

  After switching to OS X when I got a new MacBook Air, one of the first things I needed to duplicate was my extremely customized AutoHotkey setup — the most important of which is using the J and K keys to navigate throughout tabbed windows easily. Yeah, I’m a Vim user. I’ve never been a fan of having to use CTRL + TAB to switch from one tab to the next — to start with, you have to move your hands from the home row, and it’s awkward, and why should I have to do that just because somebody decided that keyboard shortcut before tabs became popular? If you think about it, if tabbed browsers were popular back when keyboard shortcuts were being invented, they would have definitely reserved some of the good shortcuts for switching tabs. On Windows, I’ve always used an AutoHotkey script to make things the way I wanted it:  ALT + J and ALT + K for selecting previous and next tabs. Once you get used to it, it’s extremely awesome, and so much faster than using CTRL + TAB. Of course, I also hacked CTRL + T and CTRL + W into ALT + T and ALT + W so I could open new tabs and close them without moving my hands from the home row. Over on OS X, it turns out that it’s incredibly simple and easy to use CMD + J and CMD + K for next/previous tab navigation, and it works in most applications that support tabs, like Terminal, Safari, or Google Chrome.    

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• Need help: jBPM installation issue

  - by Kouky

  This is Ms Kahina, I’m getting started with jBPM & Java EE, I tried to install the jBPM 5.4 version by following all the steps stated in the iBPM user guide as below: 1- I’ve installed Java (JDK 1.7) and ant ( Apache-ant-1.9.4). 2- I’ve set both JAVA_HOME and ANT_HOME environement variables. 3- I’ve downloaded the jBPM 5.4 full installer and run the installation script “ant install.demo” and after that the start script “ant start.demo”. But unfortunately jBPM 5.4 is not working. When running the installation Script I’m getting successful message but with the following warnings : [copy] Warning: Could not find file C:\jbpm-installer\db\task-persistence.xml to copy. [copy] Warning: Could not find file C:\jbpm-installer\db\Taskorm.xml to copy. The start demo was successful. Actually when I try to open any tool provided with the jBPM such us the jBPM-console for example I’m getting the following messages: Address not found or sometimes the http status 404 occurred even if the Welcome page of jBoss AS was opened at http://localhost:8080/. Please need your assistance to sort out this issue in order to move forward in my project as I'm blocked in the installation stage since more than a week now, I don’t know if this is related to the jBoss AS7 or to any other thing that I didn’t find out. Looking forward to hearing from you. Thanks Kahina

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• Good podcasting solution?

  - by burnso

  I simply ask for the best, most common and simple way to set up a podcast? Please, I need an answer so I can close this question? I run a joomla-based website for a small church and now need a simple, cheap and effective solution for an audio podcast. I am looking for a solution that will do the following: User uploads audio files to service (preferably not to our own site) that is cheap, fast and simple to use. Dropbox for example? Files are easily embeddable into Joomla website articles to be played on the spot (through simple-to-use and media player). Preferably through RSS feeds (to make it easy to update every week). Files are downloadable. Files are viewable on iPhones and other smartphones. Solution can be broadcasted via iTunes. Solution doesn't need a lot of extra, new third party software. I'd rather keep it simple and familiar than have it be a complete new system but with a steep learning curve. At the moment we use vimeo to host the podcast, through video files. But we'd like to move to something simpler that doesn't involve a series of difficult steps to upload the files to the web.

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• make gnome3 to work as I expect! [closed]

  - by gnome

  Possible Duplicate: How to revert to GNOME Classic? I don't like unity so I tried Ubuntu Gnome Remix 12.10. But I feel disappointed too. - No right click on desktop. (I know there is a way to enable it). - No icon on desktop. - I want to have "applications", "palces", "systems" on top panel as before. It just takes much more steps to arrive where I want to go in default gnome 3 settings. - It seems to me that for some applications, when it is maximalized, there is no close buttons or "restore to previous size" button. In fact, it has no title bar in this case, so I can't drag the title bar to restore its previous size and move the window. So I got 3 questions here: (for those who like the way gnome work before) What difference between gnome2 and gnome3 that you prefer the way it works in gnome2? How do you change it to work in the gnome2 way? I don't like the appearance in gnome3. For those who have tried to make your gnome3 looks good, could you share how you customize your gnome3 appearance? (this is for chatting only, not a real question) Why all the main OS (Windows, Mac, Some Linux) want to integrate Desktop and Tablet with focus on Tablet? (Which means that when it is installed on a desktop, it still has tablet appearance, which makes things strange.) Do they think the personal desktop PC will become less and less?

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• Android Game Development problem whith size and speed

  - by Charlton Santana

  I have been coding speed for an object. I have made it so the object will move from one end of the screen to another at a speed depending on the screen size, at the monemt I have made it so it will take one second to pass the screen. So i have worked out the speed in code but when I go to assign the speed it tells me to force close and i do not understand why. Here is the code: MainGame Code: @Override protected void onDraw(Canvas canvas) { setBlockSpeed(getWidth()); } private int blockSpeed; private void setBlockSpeed(int screenWidth){ Log.d(TAG, "screenWidth " + screenWidth); blockSpeed = screenWidth / 100; // 100 is the FPS.. i want it to take 1 second to pass the screen Math.round(blockSpeed); // to make it a whole number block.speed = blockSpeed; // if i dont put blockSpeed and put eg 8 it still tells me to force close } Block.java Code: public int speed; public void draw(Canvas canvas) { canvas.drawBitmap(bitmap, x - (bitmap.getWidth() / 2), y - (bitmap.getHeight() / 2), null); if(dontmove == 0){ this.x -= speed; } }

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• Help w/ iPad 1 performance for tile-based DOM Javascript game

  - by butr0s

  I've made a 2D tile-based game with DOM/Javascript. For each level, the map data is loaded and parsed, then lots of tiles ( elements) are drawn onto a larger "map" element. The map is inside of a container that hides overflow, so I can move the map element around by positioning it absolutely. Works a treat on desktop browsers, and my iPad 2. My problem is that performance is really bad on iPad 1. The performance hit is directly related to all the tile elements in my map, because when I remove or reduce the number of tiles drawn, performance improves. Optimizing my collision detection loop has no effect. My first thought was to batch groups of tiles into containers, then hide/show them based on proximity to the player, however this still causes a huge hiccup when the player moves and a new group of tiles is displayed (offscreen). Actually removing the out-of-sight elements from the DOM, then re-adding them as necessary is no faster. Anyone know of any tips that might speed up DOM performance here? My map is 1920 x 1920 pixels, so as far as I know should be within the WebKit texture limit on iOS 5/iPad. The map is being moved with CSS3 transforms, and I've picked all the other obvious low-hanging fruit.

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• Can observer pattern be represented by cars and traffic lights?

  - by eeerahul

  I wanted to verify with all of you, if I have a correct Observer Pattern analogy. The scenario is as follows: Consider, at a junction, there is a traffic signal, having red, yellow and green lights respectively. There are vehicles facing the traffic signal post. When it shows red, the vehicles stop, when it shows green, the vehicles move on. In case, it is yellow, the driver must decide whether to go or to stop, depending on whether he/she has crossed the stop line or not. At the same time, there are vehicles that do not care about the signal. They would do as they like. The similarities are that, the Traffic Signal happens to be the subject, notifying its states by glowing the appropriate lights. Those looking at it and following the signal are the ones subscribed to it, and behave according to the state of the subject. Those who do not care about it, are sort-of un-subscribed from the traffic signal. Please tell me, if you think this is a correct analogy or not?

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• Ubuntu black screen after Installation of 12.10 Live USB

  - by Lime0fHint

  My computer was made in 2004, but I'm sure it doesn't matter since it's a durable machine. So recently, I decided to breathe new life to it with Linux. I tried Lubuntu 12.10, Nope. Black screen after install. So I tried Ubuntu 12.10 when I gave up, and same exact thing. Except, this time I'm fighting for it, since Ubuntu is the best OS I've ever seen. So back on-topic, when I start the installation, it says that something is already mounted (Sda or something of the sorts) So I just figure that it's the Live USB I'm using. So I let it ignore it, and move on. The rest of the installation goes smooth, all looks fine. Then I get to the screen with the introductory to Ubuntu. Meanwhile, it's still installing, but finishing up. I'm not sure if the install actually finishes, but I do know that after a bit, the screen goes back to the desktop. The install closes and I'm back at the desktop, and the cursor is showing the "loading" symbol, as if it were still working. Then the screen goes black, with the same cursor. After that, nothing. I left it over night like that thinking it was doing something, in the morning it was still black with the cursor circling or whatever. So what could be causing this? One concern I have is that I have a Nvidia graphics card (7300 GT). I heard that Nvidia isn't compatible with Linux? I did notice that it was marked as unreconigsed by Ubuntu, so is that the problem perhaps?

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• Static / Shared Helper Functions vs Built-In Methods

  - by Nathan

  This is a simple question but a design consideration that I often run across in my day to day development work. Lets say that you have a class that represents some kinds of collection. Public Class ModifiedCustomerOrders Public Property Orders as List(Of ModifiedOrders) End Class Within this class you do all kinds of important work, such as combining many different information sources and, eventually, build the Modified Customer Orders. Now, you have different processes that consume this class, each of which needs a slightly different slice of the ModifiedCustomerOrders items. To enable this, you want to add filtering functionality. How do you go about this? Do you: Add Filtering calls to the ModifiedCustomerOrders class so that you can say: MyOrdersClass.RemoveCanceledOrders() Create a Static / Shared "tooling" class that allows you to call: OrdersFilters.RemoveCanceledOrders(MyOrders) Create an extension method to accomplish the same feat as #2 but with less typing: MyOrders.RemoveCanceledOrders() Create a "Service" method that handles the getting of Orders as appropriate to the calling function, while using one of the previous approaches "under the hood". OrdersService.GetOrdersForProcessA() Others? I tend to prefer the tooling / extension method approaches as they make testing a little bit simpler. Although I dependency inject all my sourcing data into the ModifiedCustomerOrders, having it as part of the class makes it a little bit more complicated to test. Typically, I choose to use extension methods where I am doing parameterless transformations / filters. As they get more complex, I will move it into a static class instead. Thoughts on this approach? How would you approach it?

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• 'Buy the app' landing page implementations

  - by benwad

  My site (using Django) has an app that I'm trying to push - I currently have a piece of middleware that redirects the user to a page advertising the app if they're accessing the page on the iPhone, then setting a cookie so that the user isn't bugged by the message every time they visit the site. This works fine, however checking the page with the mobile Googlebot checker shows that the Googlebot gets stuck in the redirect (since it doesn't store cookies) and therefore won't index the proper content. So, I'm trying to think of an alternative implementation that won't hurt the site's Google ranking and won't have any other adverse effects. I've considered a couple of options: Redirect (the current solution), but don't redirect if the user agent matches the Googlebot's UA string. This would be ideal, however I'm not sure if Google like their bot being treated differently from other users, and I'm afraid the site's ranking may be somehow penalised if I go ahead with this. Use a Javascript popup instead of a redirect. This would make sure the Googlebot finds the content it needs, however I envision this approach causing compatibility issues with the myriad mobile devices/browsers out there, and may affect the page load time. How valid are these options? And is there a better option for implementing this feature out there? I've tried researching this topic but surprisingly can't find any reputable-looking blog posts that explore this topic. EDIT: I posted this on SF because it seemed unsuitable for SO, but if there's another site that would be better for this issue then I'd be happy to move the question elsewhere.

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