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• English-Focused Translation Bookmarklet for Your Browser

  - by Asian Angel

  Are you wanting a translation bookmarklet that just focuses on translating websites into English? Then you will want to take a look at the To English Bookmarklet. Get the Bookmarklet To install the To English Bookmarklet visit the webpage at Lifehacker (link below), grab the bookmarklet with your mouse, and drag it to your “Bookmarks Toolbar”. Now you are ready for one-click translation into English. To English in Action We decided to test our new bookmarklet on two different International Mozilla websites. The first one was in Swedish… One click and there it is. Notice that there is a “translation bar frame” that will still let you choose yet another language to translate the webpage into if you desire. Definitely a nice touch… Our second example was in Russian. Once again a single click and… The website is now in English. On this particular page the “central green graphic” was affected by the translation and the two sidebar buttons are “pre-made” but that is ok. You can read what you need to without any problems. Conclusion If you have been wanting a bookmarklet that just focuses on translating into English then this should be perfect for you. If you are looking for a bookmarklet that gives you access to a Google Translation Bar then be certain to see our article here. Links Add the To English Bookmarklet to Your Browser Similar Articles Productive Geek Tips Add a Google Translation Bar to Your Favorite BrowserSkip “Next Links” with the PageZipper BookmarkletCreate Shortened goo.gl URLs in Your Favorite BrowserQuickly Translate Text to Another Language in Word 2007See Where Shortened URLs “Link To” in Your Favorite Browser TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Find Downloads and Add-ins for Outlook Recycle ! Find That Elusive Icon with FindIcons Looking for Good Windows Media Player 12 Plug-ins? Find Out the Celebrity You Resemble With FaceDouble Whoa !

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• Make Firefox Show Google Results for Default Address Bar Searches

  - by The Geek

  Have you ever typed something incorrectly into the Firefox address bar, and then had it take you to a page you weren’t expecting? The reason is because Firefox uses Google’s “I’m Feeling Lucky” search, but you can change it. Scratching your head? Let’s take a quick run through what we’re talking about… Normally, if you typed in something like just “howtogeek” in the address bar, and then hit enter… you’ll be taken directly to the How-To Geek site. But how? Very simple! It’s the same place you would have been taken to if you typed “howtogeek” into Google, and then clicked the “I’m Feeling Lucky” button, which takes you to the first result. This is what Firefox does behind the scenes when you put something into the address bar that isn’t a URL. But what if you’d rather head to the search results page instead? Luckily, all you have to do is tweak an about:config parameter in Firefox. Just head into about:config in the address bar, and then filter for keyword.url like so: Double-click on the entry in the list, and then delete the &gfns=1 from the value. That’s the part of the URL that triggers Google to redirect to the first result. And now, the next time you type something into the address bar, either on purpose or because you typo’d it, you’ll be taken to the results page instead: About:Config tweaking is lots of fun. Similar Articles Productive Geek Tips Make Firefox Quick Search Use Google’s Beta Search KeysMake Firefox Built-In Search Box Use Google’s Experimental Search KeysCombine Wolfram Alpha & Google Search Results in FirefoxHow To Run 4 Different Google Searches at Once In the Same TabChange Default Feed Reader in Firefox TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Looking for Good Windows Media Player 12 Plug-ins? Find Out the Celebrity You Resemble With FaceDouble Whoa ! Use Printflush to Solve Printing Problems Icelandic Volcano Webcams Open Multiple Links At One Go

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• Error Copying Source File in Audio Spectrum Visualizer [closed]

  - by David Dimalanta

  I'm testing this code using LibGDX, Java, and Eclipse to test the music player that detects the frequency. I saw this one on this website plus the link on GitHub: http://gtomee.com/2012/07/28/audio-spectrum-visualizer-with-libgdx/ It works when running on desktop project folder but not on Android project folder and the result is this: 10-10 13:57:45.320: E/AndroidRuntime(9421): FATAL EXCEPTION: GLThread 16845 10-10 13:57:45.320: E/AndroidRuntime(9421): com.badlogic.gdx.utils.GdxRuntimeException: Error copying source file: soundtrack 1 bioman.mp3 (Internal) 10-10 13:57:45.320: E/AndroidRuntime(9421): To destination: tmp/audio-spectrum.mp3 (External) 10-10 13:57:45.320: E/AndroidRuntime(9421): at com.badlogic.gdx.files.FileHandle.copyFile(FileHandle.java:625) 10-10 13:57:45.320: E/AndroidRuntime(9421): at com.badlogic.gdx.files.FileHandle.copyTo(FileHandle.java:534) 10-10 13:57:45.320: E/AndroidRuntime(9421): at com.bodapps.rhythm.Drop.create(Drop.java:393) 10-10 13:57:45.320: E/AndroidRuntime(9421): at com.badlogic.gdx.backends.android.AndroidGraphics.onSurfaceChanged(AndroidGraphics.java:292) 10-10 13:57:45.320: E/AndroidRuntime(9421): at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1505) 10-10 13:57:45.320: E/AndroidRuntime(9421): at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240) 10-10 13:57:45.320: E/AndroidRuntime(9421): Caused by: com.badlogic.gdx.utils.GdxRuntimeException: Error stream writing to file: tmp/audio-spectrum.mp3 (External) 10-10 13:57:45.320: E/AndroidRuntime(9421): at com.badlogic.gdx.files.FileHandle.write(FileHandle.java:313) 10-10 13:57:45.320: E/AndroidRuntime(9421): at com.badlogic.gdx.files.FileHandle.copyFile(FileHandle.java:623) 10-10 13:57:45.320: E/AndroidRuntime(9421): ... 5 more 10-10 13:57:45.320: E/AndroidRuntime(9421): Caused by: com.badlogic.gdx.utils.GdxRuntimeException: Error writing file: tmp/audio-spectrum.mp3 (External) 10-10 13:57:45.320: E/AndroidRuntime(9421): at com.badlogic.gdx.files.FileHandle.write(FileHandle.java:293) 10-10 13:57:45.320: E/AndroidRuntime(9421): at com.badlogic.gdx.files.FileHandle.write(FileHandle.java:305) 10-10 13:57:45.320: E/AndroidRuntime(9421): ... 6 more 10-10 13:57:45.320: E/AndroidRuntime(9421): Caused by: java.io.FileNotFoundException: /storage/sdcard0/tmp/audio-spectrum.mp3: open failed: EACCES (Permission denied) 10-10 13:57:45.320: E/AndroidRuntime(9421): at libcore.io.IoBridge.open(IoBridge.java:416) 10-10 13:57:45.320: E/AndroidRuntime(9421): at java.io.FileOutputStream.<init>(FileOutputStream.java:88) 10-10 13:57:45.320: E/AndroidRuntime(9421): at com.badlogic.gdx.files.FileHandle.write(FileHandle.java:289) 10-10 13:57:45.320: E/AndroidRuntime(9421): ... 7 more 10-10 13:57:45.320: E/AndroidRuntime(9421): Caused by: libcore.io.ErrnoException: open failed: EACCES (Permission denied) 10-10 13:57:45.320: E/AndroidRuntime(9421): at libcore.io.Posix.open(Native Method) 10-10 13:57:45.320: E/AndroidRuntime(9421): at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110) 10-10 13:57:45.320: E/AndroidRuntime(9421): at libcore.io.IoBridge.open(IoBridge.java:400) 10-10 13:57:45.320: E/AndroidRuntime(9421): ... 9 more I'm not sure if I come this to the right place for help and suggestions.

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• Friday Fun: Play Your Favorite 8-Bit NES Games Online

  - by Mysticgeek

  We finally made it to another Friday and once again we bring you some NES fun to waste the rest of the day before the weekend. Today we take a look at a site that contains a lot of classic NES games you can play online. vNES VirtualNES.com contains hundreds of vintage NES games you can play online. If you’re old enough to remember, when the NES came out, it breathed life back into home console gaming. Here we will take a look at a few of the games they offer that will certainly bring back memories. Super Mario Bros 3 which is a personal favorite from the 8-bit era.   Play Super Mario Bros 3 Excite Bike was one of the coolest dirt bike racing games at the time as it even allowed you to create your own tracks.   Play ExciteBike Of course The Legend of Zelda was one of the first fantasy games many an hour have been spent on. Play The Legend of Zelda We’d be remiss if we didn’t bring up Pac-man since the game recently celebrated it’s 30th anniversary. Play Pac-Man If you don’t like the default keyboard controls you can change them on the Options page. Join their forum and more…this site will definitely bring you back to the good old 8-bit NES days.   The site contains hundreds of different games for you to get on your old school NES fix. If you’re sick of waiting for the whistle to blow, this site will bring you back to the good old days when you had nothing to do but mash buttons all day. Play NES Games at virtualnes.com Similar Articles Productive Geek Tips Friday Fun: Get Your Mario OnFriday Fun: Go Retro with PacmanFriday Fun: Five More Time Wasting Online GamesFriday Fun: Online Flash Games to Usher in the WeekendFriday Fun: Online Sports Flash Games TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Awesome World Cup Soccer Calendar Nice Websites To Watch TV Shows Online 24 Million Sites Windows Media Player Glass Icons (icons we like) How to Forecast Weather, without Gadgets Outlook Tools, one stop tweaking for any Outlook version

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• Enhance Your Gmail Account in Chrome

  - by Asian Angel

  Are you tired of items like the Chat and Invite Boxes cluttering up your Gmail account? Then join us as we look at the Better Gmail extension for Google Chrome. Before Here are some examples of items that you may be tired of looking at in your Gmail account such as the “Footer” below your “Inbox”, the “Chat Box”, and the “Invitation Box”. Perhaps you would also like to have the “New Window, Print all, & Create a document Commands” moved elsewhere. And of course there is everyone’s “favorite” sponsored links… Time to do some cleaning up and reorganizing. Better Gmail in Action As soon as you have installed Better Gmail a new tab will automatically open and present you with the available options. Place a “checkmark” in the box for each option that you would like activated and click on “Save” when finished. Note: The final option entry is a tie-in with two other “linked” extensions (Folders4Gmail & HTML Signature) while the middle listing is a link to an article for disabling Google Buzz. Once you have saved your changes in the “Options” you will be prompted to refresh your Gmail tab to see the changes. Going back to our “Inbox Area” everything looks so much more streamlined and clean now. Goodbye clutter! The “New Window, Print all, & Create a document Commands” definitely look a lot nicer as a small toolbar above our e-mail. And the right side…you can see for yourself just how much better that looks. No more distractions there to bother you as you read your e-mail. Conclusion If you have been wanting to get rid of the undesirable elements visible in your Gmail account then hurry over to the Better Gmail page, grab the extension and enjoy the better view. Links Download the Better Gmail extension (Google Chrome Extensions) Similar Articles Productive Geek Tips Figure out which Online accounts are selling your email to spammersAdd a Remember The Milk Task Pane to Gmail in ChromeHow to Send and Receive Hotmail from Your Gmail AccountAdd Your Gmail To Windows Live MailOpen Your Gmail Account in a Popup Window TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Windows Media Player 12: Tweak Video & Sound with Playback Enhancements Own a cell phone, or does a cell phone own you? Make your Joomla & Drupal Sites Mobile with OSMOBI Integrate Twitter and Delicious and Make Life Easier Design Your Web Pages Using the Golden Ratio Worldwide Growth of the Internet

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• Game Center: Leaderboard score inconsistencies

  - by Hasyimi Bahrudin

  Background I'm currently developing a simple library that mirrors Game Center's functionalities locally. Basically, this library is a system that manages achievements and leaderboards, and optionally sync it with the Game Center. So, if the game is not GC enabled, the game will still have achievements and leaderboards (stored inside a plist). But of course, the leaderboards will then only contain the local player's scores (which is kind of useless, I know :P). Problem Currently I have coded both of the achievements and leaderboards subsystems. The achievements subsystem have already been tested and it works. I'm currently testing the leaderboards subsystem using multiple test user accounts. I loaded the test app on a device and on the simulator, both logged in with 2 different user accounts. Then I performed these steps: I first used the device to upload a score. Then, I ran the simulator, and the score submitted by the user on the device is shown. Which is cool. Then, I used the simulator to upload a score. But on the device, still, only one score is listed. I checked on the Game Center app (to see if the bug lies within my code), and I got the same thing. Under "All players", there is only one score on the device, but there are 2 scores on the simulator. I wanted to make sure that the simulator is not causing this, so I swapped the users on the device and the simulator, and the result is still the same. In other words, the first user is oblivious of the second user's score, but the second user can see the first user's score. Then I tried with a third user. The result: the third user can only see the scores of the first user and himself. The second user still sees the scores of the first user and himself. The first user only sees his own score. Now here comes the weird part. I then make the first user and the second user befriend each other. The result: under "Friends", the first user can see the second user's score, but under "All Players", the first user's score is the only one listed. Screenshots The first user sees this: The second user sees this: So, is this a normal thing when using sandboxed GC accounts? Is this behavior documented somewhere by Apple?

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• How to implement a simple bullet trajectory

  - by AirieFenix

  I searched and searched and although it's a fair simple question, I don't find the proper answer but general ideas (which I already have). I have a top-down game and I want to implement a gun which shoots bullets that follow a simple path (no physics nor change of trajectory, just go from A to B thing). a: vector of the position of the gun/player. b: vector of the mouse position (cross-hair). w: the vector of the bullet's trajectory. So, w=b-a. And the position of the bullet = [x=x0+speed*time*normalized w.x , y=y0+speed*time * normalized w.y]. I have the constructor: public Shot(int shipX, int shipY, int mouseX, int mouseY) { //I get mouse with Gdx.input.getX()/getY() ... this.shotTime = TimeUtils.millis(); this.posX = shipX; this.posY = shipY; //I used aVector = aVector.nor() here before but for some reason didn't work float tmp = (float) (Math.pow(mouseX-shipX, 2) + Math.pow(mouseY-shipY, 2)); tmp = (float) Math.sqrt(Math.abs(tmp)); this.vecX = (mouseX-shipX)/tmp; this.vecY = (mouseY-shipY)/tmp; } And here I update the position and draw the shot: public void drawShot(SpriteBatch batch) { this.lifeTime = TimeUtils.millis() - this.shotTime; //position = positionBefore + v*t this.posX = this.posX + this.vecX*this.lifeTime*speed*Gdx.graphics.getDeltaTime(); this.posY = this.posY + this.vecY*this.lifeTime*speed*Gdx.graphics.getDeltaTime(); ... } Now, the behavior of the bullet seems very awkward, not going exactly where my mouse is (it's like the mouse is 30px off) and with a random speed. I know I probably need to open the old algebra book from college but I'd like somebody says if I'm in the right direction (or points me to it); if it's a calculation problem, a code problem or both. Also, is it possible that Gdx.input.getX() gives me non-precise position? Because when I draw the cross-hair it also draws off the cursor position. Sorry for the long post and sorry if it's a very basic question. Thanks!

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• Game Review: God of Light

  Luckily I came across this title at a very early stage. If I remember correctly, I took notice of God of Light on Twitter right on the weekend it has been published on the Play Store. "Sit back and become immersed into the world of God of Light, the game that rethinks the physics puzzle genre with its unique environment exploration gameplay, amazing graphics and exclusive soundtrack created by electronic music icon UNKLE. Join cute game mascot, Shiny, on his way to saving the universe from the impending darkness. Play through a variety of exciting game worlds and dozens of levels with mind-blowing puzzles. Your goal is to explore game levels, seek for game objects that reflect, split, combine, paint, bend and teleport rays of light energy to activate the Sources of Life and bring light back to the universe." Mastering the various reflection items in God of Light is very easy to learn and new elements are introduced during the game. Amazing puzzle game Here's the initial review I posted on the Play Store: "Great change in puzzles Fantastic and refreshing concept of puzzle solving. The effects and the music match very well, putting the player in the right mood to game. Get enlightened and grow your skills until you are a true God of Light." And it remains true, even after completing the first realm completely. Similar to Quell it took me only a couple of hours during the evening to complete all levels in the available three realms, unfortunately. God of Light currently consists of 75 levels, well it's 25 in each realm to be precise, and the challenges are increasing. Compared to the iOS version from the AppStore, God of Light is available for free on Android - at least the first realm (25 levels). Unlocking the other two remaining realms is done through an in-app purchase. The visual appearance, the sound effects and the background music provided by UNKLE makes God of Light a superb package for any puzzle gamer. Whether it is simply reflecting light over multiple mirrors, or later on bending the rays of light with black holes, or using prisms to either split, enforce, or colourise your beam, God of Light is great fun and offers a good amount of joy. Check out the following screenshots for some impressions. God of Light: Astonishing graphics and visual appeal throughout the game God of Light - Introduction to the game during the first levels. New light items are introduced at each stage during the game play God of Light: Increasing complexity and puzzle fun Hopefully, Playmous is going to provide more astonishing looking realms and interesting gimmicks in future versions. Play Store: God of Light Also, check out the latest game updates on the official web site of Playmous

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• Moving Character in C# XNA Not working

  - by Matthew Stenquist

  I'm having trouble trying to get my character to move for a game I'm making in my sparetime for the Xbox. However, I can't seem to figure out what I'm doing wrong , and I'm not even sure if I'm doing it right. I've tried googling tutorials on this but I haven't found any helpful ones. Mainly, ones on 3d rotation on the XNA creators club website. My question is : How can I get the character to walk towards the right in the MoveInput() function? What am I doing wrong? Did I code it wrong? The problem is : The player isn't moving. I think the MoveInput() class isn't working. Here's my code from my character class : using System; using System.Collections.Generic; using System.Linq; using System.Text; using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Graphics; using Microsoft.Xna.Framework.Input; namespace Jumping { class Character { Texture2D texture; Vector2 position; Vector2 velocity; int velocityXspeed = 2; bool jumping; public Character(Texture2D newTexture, Vector2 newPosition) { texture = newTexture; position = newPosition; jumping = true; } public void Update(GameTime gameTime) { JumpInput(); MoveInput(); } private void MoveInput() { //Move Character right GamePadState gamePad1 = GamePad.GetState(PlayerIndex.One); velocity.X = velocity.X + (velocityXspeed * gamePad1.ThumbSticks.Right.X); } private void JumpInput() { position += velocity; if (GamePad.GetState(PlayerIndex.One).Buttons.A == ButtonState.Pressed && jumping == false) { position.Y -= 1f; velocity.Y = -5f; jumping = true; } if (jumping == true) { float i = 1.6f; velocity.Y += 0.15f * i; } if (position.Y + texture.Height >= 1000) jumping = false; if (jumping == false) velocity.Y = 0f; } public void Draw(SpriteBatch spriteBatch) { spriteBatch.Draw(texture, position, Color.White); } } }

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• Will polishing my current project be a better learning experience than starting a new one?

  - by Alejandro Cámara

  I started programming many years ago. Now I'm trying to make games. I have read many recommendations to start cloning some well known games like galaga, tetris, arkanoid, etc. I have also read that I should go for the whole game (including menus, sound, score, etc.). Yesterday I finished the first complete version of my arkanoid clone. But it is far from over. I can still work on it for months (I program as a hobby in my free time) implementing a screen resolution switcher, remap of the control keys, power-ups falling from broken bricks, and a huge etc. But I do not want to be forever learning how to clone ONE game. I have the urge to get to the next clone in order to apply some design ideas I have come upon while developing this arkanoid clone (at the same time I am reading the GoF book and much source code from Ludum Dare 21 game contest). So the question is: Should I keep improving the arkanoid clone until it has all the features the original game had? or should I move to the next clone (there are almost infinite games to clone) and start mending the things I did wrong with the previous clone? This can be a very subjective question, so please restrain the answers to the most effective way to learn how to make my own games (not cloning someone ideas). Thank you! CLARIFICATION In order to clarify what I have implemented I make this list: Features implemented: Bouncing capabilities (the ball bounces on walls, on bricks, and on the bar). Sounds when bouncing on bricks and the bar, and when the player wins or loses. Basic title menu (new game and exit only). Also in-game menu and win/lose menus. Only three levels, but the map system is so easy I do not think it will teach me much (am I wrong?). Features not-implemented: Power-ups when breaking the bricks. Complex bricks (with more than one "hit point" and invincible). Better graphics (I am not really good at it). Programming polishing (use more intensively the design patterns). Here's a link to its (minimal) webpage: http://blog.acamara.es/piperine/ I kind of feel ashamed to show it, so please do not hit me too hard :-) My question was related to the not-implemented features. I wondered what was the fastest (optimal) path to learn. 1) implement the not-implemented features in this project which is getting big, or 2) make a new game which probably will teach me those lessons and new ones. ANSWER I choose @ashes999 answer because, in my case, I think I should polish more and try to "ship" the game. I think all the other answers are also important to bear in mind, so if you came here having the same question, before taking a rush decision read all the discussion. Thank you all!

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• Drawing isometric map in canvas / javascript

  - by Dave

  I have a problem with my map design for my tiles. I set player position which is meant to be the middle tile that the canvas is looking at. How ever the calculation to put them in x:y pixel location is completely messed up for me and i don't know how to fix it. This is what i tried: var offset_x = 0; //used for scrolling on x var offset_y = 0; //used for scrolling on y var prev_mousex = 0; //for movePos function var prev_mousey = 0; //for movePos function function movePos(e){ if (prev_mousex === 0 && prev_mousey === 0) { prev_mousex = e.pageX; prev_mousey = e.pageY; } offset_x = offset_x + (e.pageX - prev_mousex); offset_y = offset_y + (e.pageY - prev_mousey); prev_mousex = e.pageX; prev_mousey = e.pageY; run = true; } player_posx = 5; player_posy = 55; ct = 19; for (i = (player_posx-ct); i < (player_posx+ct); i++){ //horizontal for (j=(player_posy-ct); j < (player_posy+ct); j++){ // vertical //img[0] is 64by64 but the graphic is 64by32 the rest is alpha space var x = (i-j)*(img[0].height/2) + (canvas.width/2)-(img[0].width/2); var y = (i+j)*(img[0].height/4); var abposx = x - offset_x; var abposy = y - offset_y; ctx.drawImage(img[0],abposx,abposy); } } Now based on these numbers the first render-able tile is I = 0 & J = 36. As numbers in the negative are not in the array. But for I=0 and J= 36 the position it calculates is : -1120 : 592 Does any one know how to center it to canvas view properly?

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• Height Map Mapping to "Chunked" Quadrilateralized Spherical Cube

  - by user3684950

  I have been working on a procedural spherical terrain generator for a few months which has a quadtree LOD system. The system splits the six faces of a quadrilateralized spherical cube into smaller "quads" or "patches" as the player approaches those faces. What I can't figure out is how to generate height maps for these patches. To generate the heights I am using a 3D ridged multi fractals algorithm. For now I can only displace the vertices of the patches directly using the output from the ridged multi fractals. I don't understand how I generate height maps that allow the vertices of a terrain patch to be mapped to pixels in the height map. The only thing I can think of is taking each vertex in a patch, plug that into the RMF and take that position and translate into u,v coordinates then determine the pixel position directly from the u,v coordinates and determine the grayscale color based on the height. I feel as if this is the right approach but there are a few other things that may further complicate my problem. First of all I intend to use "height maps" with a pixel resolution of 192x192 while the vertex "resolution" of each terrain patch is only 16x16 - meaning that I don't have any vertices to sample for the RMF for most of the pixels. The main reason the height map resolution is higher so that I can use it to generate a normal map (otherwise the height maps serve little purpose as I can just directly displace vertices as I currently am). I am pretty much following this paper very closely. This is, essentially, the part I am having trouble with. Using the cube-to-sphere mapping and the ridged multifractal algorithm previously described, a normalized height value ([0, 1]) is calculated. Using this height value, the terrain position is calculated and stored in the first three channels of the positionmap (RGB) – this will be used to calculate the normalmap. The fourth channel (A) is used to store the height value itself, to be used in the heightmap. The steps in the first sentence are my primary problem. I don't understand how the pixel positions correspond to positions on the sphere and what positions are sampled for the RMF to generate the pixels if only vertices cannot be used.

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• More Efficient Data Structure for Large Layered Tile Map

  - by Stupac

  It seems like the popular method is to break the map up into regions and load them as needed, my problem is that in my game there are many AI entities other than the player out performing actions in virtually all the regions of the map. Let's just say I have a 5000x5000 map, when I use a 2D array of byte's to render it my game uses around 17 MB of memory, as soon as I change that data structure to a my own defined MapCell class (which only contains a single field: byte terrain) my game's memory consumption rockets up to 400+ MB. I plan on adding layering, so an array of byte's won't cut it and I figure I'd need to add a List of some sort to the MapCell class to provide objects in the layers. I'm only rendering tiles that are on screen, but I need the rest of the map to be represented in memory since it is constantly used in Update. So my question is, how can I reduce the memory consumption of my map while still maintaining the above requirements? Thank you for your time! Here's a few snippets my C# code in XNA4: public static void LoadMapData() { // Test map generations int xSize = 5000; int ySize = 5000; MapCell[,] map = new MapCell[xSize,ySize]; //byte[,] map = new byte[xSize, ySize]; Terrain[] terrains = new Terrain[4]; terrains[0] = grass; terrains[1] = dirt; terrains[2] = rock; terrains[3] = water; Random random = new Random(); for(int x = 0; x < xSize; x++) { for(int y = 0; y < ySize; y++) { //map[x,y] = new MapCell(terrains[random.Next(4)]); map[x,y] = new MapCell((byte)random.Next(4)); //map[x, y] = (byte)random.Next(4); } } testMap = new TileMap(map, xSize, ySize); // End test map setup currentMap = testMap; } public class MapCell { //public TerrainType terrain; public byte terrain; public MapCell(byte itsTerrain) { terrain = itsTerrain; } // the type of terrain this cell is treated as /*public Terrain terrain { get; set; } public MapCell(Terrain itsTerrain) { terrain = itsTerrain; }*/ }

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• Media server...serving files...............for a limited time only

  - by Craig

  I’m new to Ubuntu and am seeking help with a media server I have built. I have a couple of HTPCs in my house running XBMC. I wanted to build one for the family room working double duty as a HTPC, and media server to share movies, TV shows, music, etc. on my Windows network. So using some spare old parts I had lying around I decided to go CRAZY and build my first Linux box. I used Ubuntu because it seemed to be the most user friendly variant, especially for people that are new to Linux. I had to do a few things to get the media files shared properly on my network: Made sure my two media drives auto-mount every time I boot the computer by editing the “fstab” file – “sudo nano /etc/fstab” Installed Samba - “sudo apt-get install samba” Set a password for Samba - “sudo smbpasswd –a USERNAME” Edited the Samba configuration file to make sure the computer was in my networks workgroup – “sudo nano /etc/samba/smb.conf” In the file manager (not sure if that’s the right name for it), I right-clicked my media folders and set the sharing and permissions. The sharing was done without guest access, and permissions were set to; Owner, Group, and Others - Access: Create and Delete Files. Adjusted the Power Management settings to never put the system into sleep mode. I checked to see if I had access to the files from a Windows 7 machine and I did (Woo Hoo!). But when I tried to play any of my video files from the Windows machine (using VLC media player), they would only play for about 2-5 minutes and then they would stop with an error message saying that the file could not be accessed (Booo...). I tried playing some files through XBMC running in Windows and they worked for a bit longer (about 10-15mins), but they also stopped playing. I installed the Linux version of XBMC on the server and played the files locally with no problems. It doesn’t seem to be an issue with the files themselves, it seems to be a sharing problem on my network. So my question to the Ubuntu gurus out there is: Did I miss adding/editing something in the Samba configuration file? Did I use the right method to share my media files (file manager vs. using the terminal)? Is it possible for the computer to still go to sleep without the screen going black (does that even make sense?). Are there any special settings in Ubuntu that I should be using since this computer as a media server (is there a media server mode?...!...?). Any help on this matter would be greatly appreciated. Thanks

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• "Package dependencies cannot be resolved" error when installing software

  - by Savitha

  Iam getting a problem while install media player packages. Package dependencies cannot be resolved This error could be caused by required additional software packages which are missing or not installable. Furthermore there could be a conflict between software packages which are not allowed to be installed at the same time. Depends: libc6 (>= 2.7) but 2.13-0ubuntu13 is to be installed Depends: libglib2.0-0 (>= 2.24.0) but 2.28.6-0ubuntu1 is to be installed Depends: libgstreamer-plugins-base0.10-0 (>= 0.10.22) but 0.10.32-1ubuntu5 is to be installed Depends: libgstreamer0.10-0 (>= 0.10.26) but 0.10.32-3ubuntu3 is to be installed Depends: liborc-0.4-0 (>= 1:0.4.10) but 1:0.4.11-2 is to be installed Depends: libpostproc-extra-51 (>= 4:0.6-1~) but 4:0.6.4-1ubuntu1+medibuntu1 is to be installed Depends: libswscale-extra-0 (>= 4:0.6-1~) but 4:0.6.4-1ubuntu1+medibuntu1 is to be installed gstreamer0.10-plugins-bad: Depends: libc6 (>= 2.7) but 2.13-0ubuntu13 is to be installed Depends: libcairo2 (>= 1.2.4) but 1.10.2-2ubuntu2 is to be installed Depends: libcdaudio1 (>= 0.99.12p2) but 0.99.12p2-9 is to be installed Depends: libdc1394-22 but it is not going to be installed Depends: libdirectfb-1.2-9 but it is not going to be installed Depends: libflite1 but it is not going to be installed Depends: libgcc1 (>= 1:4.1.1) but 1:4.5.2-8ubuntu4 is to be installed Depends: libglib2.0-0 (>= 2.26.0) but 2.28.6-0ubuntu1 is to be installed Depends: libgsm1 (>= 1.0.13) but it is not going to be installed Depends: libgstreamer-plugins-base0.10-0 (>= 0.10.32) but 0.10.32-1ubuntu5 is to be installed Depends: libgstreamer0.10-0 (>= 0.10.32) but 0.10.32-3ubuntu3 is to be installed Depends: libjasper1 (>= 1.900.1) but 1.900.1-7ubuntu2 is to be installed Depends: libmodplug1 but it is not going to be installed Depends: libmpcdec6 (>= 1:0.1~r435) but it is not going to be installed Depends: libmusicbrainz4c2a (>= 2.1.5) but it is not going to be installed Depends: libofa0 (>= 0.9.3) but it is not going to be installed Depends: liborc-0.4-0 (>= 1:0.4.10) but 1:0.4.11-2 is to be installed Depends: libpng12-0 (>= 1.2.13-4) but 1.2.44-1ubuntu3 is to be installed Depends: librsvg2-2 (>= 2.26.0) but 2.32.1-0ubuntu3 is to be installed Depends: librtmp0 (>= 2.3) but 2.3-2 is to be installed Depends: libschroedinger-1.0-0 (>= 1.0.9) but it is not going to be installed Depends: libsndfile1 (>= 1.0.20) but 1.0.23-1build1 is to be installed Depends: libstdc++6 (>= 4.1.1) but 4.5.2-8ubuntu4 is to be installed Depends: libvpx0 (>= 0.9.0) but it is not going to be installed gstreamer0.10-plugins-ugly: Depends: libc6 (>= 2.7) but 2.13-0ubuntu13 is to be installed Depends: libgcc1 (>= 1:4.1.1) but 1:4.5.2-8ubuntu4 is to be installed Depends: libglib2.0-0 (>= 2.24.0) but 2.28.6-0ubuntu1 is to be installed Depends: libgstreamer-plugins-base0.10-0 (>= 0.10.26) but 0.10.32-1ubuntu5 is to be installed Depends: libgstreamer0.10-0 (>= 0.10.26) but 0.10.32-3ubuntu3 is to be installed Depends: libid3tag0 (>= 0.15.1b) but it is not going to be installed Depends: libmad0 (>= 0.15.1b-3) but it is not going to be installed Depends: liborc-0.4-0 (>= 1:0.4.10) but 1:0.4.11-2 is to be installed Depends: libstdc++6 (>= 4.1.1) but 4.5.2-8ubuntu4 is to be installed

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• Loading levels from .txt or .XML for XNA

  - by Dave Voyles

  I'm attemptin to add multiple levels to my pong game. I'd like to simply exchange a few elements with each level, nothing crazy. Just the background texture, the color of the AI paddle (the one on the right side), and the music. It seems that the best way to go about this is by utilizing the StreamReader to read and write the files from XML. If there is a better, or more efficient alternative way then I'm all for it. In looking over the XNA Starter Platformer Kit provided by MS it seems that they've done it in this manner as well. I'm perplexed by a few things, however, namely parts within the Level class which aren't commented. /// <summary> /// Iterates over every tile in the structure file and loads its /// appearance and behavior. This method also validates that the /// file is well-formed with a player start point, exit, etc. /// </summary> /// <param name="fileStream"> /// A stream containing the tile data. /// </param> private void LoadTiles(Stream fileStream) { // Load the level and ensure all of the lines are the same length. int width; List<string> lines = new List<string>(); using (StreamReader reader = new StreamReader(fileStream)) { string line = reader.ReadLine(); width = line.Length; while (line != null) { lines.Add(line); if (line.Length != width) throw new Exception(String.Format("The length of line {0} is different from all preceeding lines.", lines.Count)); line = reader.ReadLine(); } } What does width = line.Length mean exactly? I mean I know how it reads the line, but what difference does it make if one line is longer than any of the others? Finally, their levels are simply text files that look like this: .................... .................... .................... .................... .................... .................... .................... .........GGG........ .........###........ .................... ....GGG.......GGG... ....###.......###... .................... .1................X. #################### It can't be that easy..... Can it?

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• How can I solve the same problems a CB-architecture is trying to solve without using hacks? [on hold]

  - by Jefffrey

  A component based system's goal is to solve the problems that derives from inheritance: for example the fact that some parts of the code (that are called components) are reused by very different classes that, hypothetically, would lie in a very different branch of the inheritance tree. That's a very nice concept, but I've found out that CBS is often hard to accomplish without using ugly hacks. Implementations of this system are often far from clean. But I don't want to discuss this any further. My question is: how can I solve the same problems a CBS try to solve with a very clean interface? (possibly with examples, there are a lot of abstract talks about the "perfect" design already). Here's an example I was going for before realizing I was just reinventing inheritance again: class Human { public: Position position; Movement movement; Sprite sprite; // other human specific components }; class Zombie { Position position; Movement movement; Sprite sprite; // other zombie specific components }; After writing that I realized I needed an interface, otherwise I would have needed N containers for N different types of objects (or to use boost::variant to gather them all together). So I've thought of polymorphism (move what systems do in a CBS design into class specific functions): class Entity { public: virtual void on_event(Event) {} // not pure virtual on purpose virtual void on_update(World) {} virtual void on_draw(Window) {} }; class Human { private: Position position; Movement movement; Sprite sprite; public: virtual void on_event(Event) { ... } virtual void on_update(World) { ... } virtual void on_draw(Window) { ... } }; class Zombie { private: Position position; Movement movement; Sprite sprite; public: virtual void on_event(Event) { ... } virtual void on_update(World) { ... } virtual void on_draw(Window) { ... } }; Which was nice, except for the fact that now the outside world would not even be able to know where a Human is positioned (it does not have access to its position member). That would be useful to track the player position for collision detection or if on_update the Zombie would want to track down its nearest human to move towards him. So I added const Position& get_position() const; to both the Zombie and Human classes. And then I realized that both functionality were shared, so it should have gone to the common base class: Entity. Do you notice anything? Yes, with that methodology I would have a god Entity class full of common functionality (which is the thing I was trying to avoid in the first place).

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• 2D water with dynamic waves

  - by user1103457

  New Super Mario Bros has really cool 2D water that I'd like to learn how to create. Here's a video showing it. When something hits the water, it creates a wave. There are also constant "background" waves. You can get a good look at the constant waves just after 00:50 when the camera isn't moving. I assume the splashes in NSMB work as in the first part of this tutorial. But in NSMB the water also has constant waves on the surface, and the splashes look very different. Another difference is that in the tutorial, if you create a splash, it first creates a deep "hole" in the water at the origin of the splash. In new super mario bros this hole is absent or much smaller. I am referring to the splashes that the player creates when jumping in and out of the water. How do they create the constant waves and the splashes? I am especially interested in the splashes, and how they work together with the constant waves. I am programming in XNA. I've tried this myself, but couldn't really get it all to work well together. Bonus questions: How do they create the light spots just under the surface of the waves and how do they texture the deeper parts of the water? This is the first time I try to create water like this. EDIT: I assume the constant waves are created using a sine function. The splashes are probably created in a way like in the tutorial. (But they are not the same, so I am still interested in how to make this kind of splashes) But I have a lot of trouble combining those things. I know I can use the sine function to set the height of a specific watercolumn but the splashes are using the speed, to determine the new height. I can't figure out how to combine those. Not that I am not asking how the developers of new super mario bros did this exactly. I am just interested in ways to recreate an effect like it. This week I have an examweek so I don't have time to work on the code. After this week I will spend a lot of time on it. But I am constantly thinking about it, so that's why I will be checking comments etc. I just won't be looking at the code since it might be too time-consuming.

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• Do I need to create my own or use a commercial server for the features and matchmaking options I want my game to support?

  - by baptzmoffire

  So I'm developing an indie turn-based game for iOS and, in coding up a Game Center matchmaking class, I'm starting to question whether Game Center is even the best choice for what I want this game to do. I need to figure out whether I need to create my own server, invest in a preexisting client or server service, or if I even need to use a server at all. If I do need to use a ready-made service other than Game Center, which server would accomodate my game's needs best? I have limited resources and funds. Here is the list of features I want my game to support, ideally: Turn-based gameplay (a la "with Friends" and "with Buddies" games) Smart matchmaking (matching users up with other players of comparable skill/achievements) Random matchmaking Facebook matchmaking Specific username matchmaking Contact list matchmaking A way to select what "type" of match you want to challenge an opponent to. (In random, smart, and Facebook matchmaking, there will be different "wagers" the player can make. [e.g. "I wanna play a random opponent for 1000 points. Now, I wanna play my Facebook buddy for 1,000,000 points."] There will be a predetermined range of amounts you can play for. It won't be customizable.) Buddies list capability (Game-buddies, as opposed to contacts and Facebook) A higher concurrent game cap than Game Center offers (which I still can't really find a straight answer on) Scalability (it should support 2 or 20,000,000 players) Objective-C compatibility Flexibility (for all the stuff I haven't thought of yet) Am I dreaming, here? Is there even a service that can handle all of these features? Do I need to invest months in learning a networking language to build my own? If so, how much would I need to spend on hardware? I've been looking around all morning and, so far, the only seemingly viable option is SmartFox. Under "Everything and the kitchen sink" section here, it says they support "virtual world with Zones, Rooms and RoomGroups, create complex game challenges, send invitations, manage buddy lists, create custom permission profiles, oversee the security aspects and tons more." http://www.smartfoxserver.com/overview/platform Is there an option that Im just overlooking? Thanks for any help anyone can provide. Sorry for the long poast. One last question: Does anyone know which server Dice with Buddies uses? I was experimenting with how many concurrent games I could get going and my ADHD kicked in at about 80 games. 80 concurrent games would be great for my game, but again, I need the other features I mentioned too. Thanks again.

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• Wesquare (NL) helps major CG customer integrating Oracle Service Cloud (RightNow) with JDEdwards

  - by Richard Lefebvre

  Normal 0 false false false EN-US X-NONE X-NONE When this well known, Italy based, CG player claimed that they needed a new CRM tool, Oracle partner WeSquare had a precise idea of what would be required, knowing that the customer was using JDEdwards as an ERP: they immediately thoughts about a solution that would help synchronizing the customer’s back-end system with the new CRM interface. The customer asked for presentations from three companies, including Oracle, and eventually selected Oracle Service Cloud (RightNow) with Alfa Sistemi (Oracle Platinum Partner) as a System Integrator supported by Wesquare (Oracle Gold partner specialized in RightNow). Synchronizing an On Premises ERP with a new SaaS based CRM platform could be seen as an uphill task, but WeSquare was determined, during the presales cycle, to prove that they had the skills and the attitude to make the difference. So, they rolled up their sleeves and got to it: five days of relentless work, missed lunches, and hours of brainstorming showed its result in the form of a new interface that works fabulously well with the JDEdwards ERP back-end and was successfully pitched by Oracle to the end-customer to win the deal! WeSquare took the occasion to learn that they can integrate Oracle Service Cloud (RightNow) with practically every other solution that a customer may run. As part of the project, WeSquare was also involved in different add-on’s development with the aim of enriching Oracle Service Cloud’s functionality. WeSquare is based in The Netherlands with an in-shore practice supported by off-shore teams in India. WeSquare can integrate and synchronize any application with RightNow. For more information, visit www.wesquare.nl or contact Wiebe Blankenberg (Managing Director) at +31 (0) 6 3632 1104 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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• I'm a C Programmer, but I can't find a comfortable environment to work in

  - by Jesse Brands

  Hello everyone, Last time I asked a question, I was having issues dealing with Java which I had to do for a course work. I generally use C for my development work - especially personal projects - and I've grown up in what is pretty much a Linux/UNIX world. In this world, it was easy to use C, you had your C compiler (GCC is excellent in that regard) and a wealth of tools such as the command line and vi/emacs/whatever-you-got. However, that was all that I really liked about Linux/UNIX. It really fitted well with the C language; nowadays, I'm somewhat forced into Windows/Mac OS X for most of my work. C seems poorly supported on a mac for starters, there's no GUI API to use and pretty much you get forced into Obj-C. This is not a problem, I like Objective-C, but it's another language I have to learn. Now coming to Windows. Why does everything about Windows Development try to scare me away? It's basically come down to: USE C# AND .NET OR DIE. I don't like C#, I like C, they are fundamentally different. Yet when I make a Windows Forms application in MSVC++ (I know that's not C), I get a main function riddled with weird things I've never heard of before, along with a poor, barely-compliant C/C++ compiler. What am I to do when I just want to program in C, make applications that look and feel like native Windows applications (I am a sucker for aesthetics, and I'm not looking to make something cross-platform. I just want it to work on Windows, and look as native as possible.). C++ is a fine alternative, but it really looks like the only way to make a decent, native feeling Windows application, is to use C#. Am I missing something here? I'd rather not use CYGWIN. Like I said, I want people to install the program, and it should just work out of the box on Windows 7. Program in question involves a Media Player, if anyone is curious what I'm targetting at. Anyone who had the same experiences who can help me out? How can I code something in ANSI C and still have a native feel?

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• Creating smooth lighting transitions using tiles in HTML5/JavaScript game

  - by user12098

  I am trying to implement a lighting effect in an HTML5/JavaScript game using tile replacement. What I have now is kind of working, but the transitions do not look smooth/natural enough as the light source moves around. Here's where I am now: Right now I have a background map that has a light/shadow spectrum PNG tilesheet applied to it - going from darkest tile to completely transparent. By default the darkest tile is drawn across the entire level on launch, covering all other layers etc. I am using my predetermined tile sizes (40 x 40px) to calculate the position of each tile and store its x and y coordinates in an array. I am then spawning a transparent 40 x 40px "grid block" entity at each position in the array The engine I'm using (ImpactJS) then allows me to calculate the distance from my light source entity to every instance of this grid block entity. I can then replace the tile underneath each of those grid block tiles with a tile of the appropriate transparency. Currently I'm doing the calculation like this in each instance of the grid block entity that is spawned on the map: var dist = this.distanceTo( ig.game.player ); var percentage = 100 * dist / 960; if (percentage < 2) { // Spawns tile 64 of the shadow spectrum tilesheet at the specified position ig.game.backgroundMaps[2].setTile( this.pos.x, this.pos.y, 64 ); } else if (percentage < 4) { ig.game.backgroundMaps[2].setTile( this.pos.x, this.pos.y, 63 ); } else if (percentage < 6) { ig.game.backgroundMaps[2].setTile( this.pos.x, this.pos.y, 62 ); } // etc... (sorry about the weird spacing, I still haven't gotten the hang of pasting code in here properly) The problem is that like I said, this type of calculation does not make the light source look very natural. Tile switching looks too sharp whereas ideally they would fade in and out smoothly using the spectrum tilesheet (I copied the tilesheet from another game that manages to do this, so I know it's not a problem with the tile shades. I'm just not sure how the other game is doing it). I'm thinking that perhaps my method of using percentages to switch out tiles could be replaced with a better/more dynamic proximity forumla of some sort that would allow for smoother transitions? Might anyone have any ideas for what I can do to improve the visuals here, or a better way of calculating proximity with the information I'm collecting about each tile? (PS: I'm reposting this from Stack Overflow at someone's suggestion, sorry about the duplicate!)

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• Access Offline or Overloaded Webpages in Firefox

  - by Asian Angel

  What do you do when you really want to access a webpage only to find that it is either offline or overloaded from too much traffic? You can get access to the most recent cached version using the Resurrect Pages extension for Firefox. The Problem If you have ever encountered a website that has become overloaded and unavailable due to sudden popularity (i.e. Slashdot, Digg, etc.) then this is the result. No satisfaction to be had here… Resurrect Pages in Action Once you have installed the extension you can add the Toolbar Button if desired…it will give you the easiest access to Resurrect Pages. Or you can wait for a problem to occur when trying to access a particular website and have it appear as shown here. As you can see there is a very nice selection of cache services to choose from, therefore increasing your odds of accessing a copy of that webpage. If you would prefer to have the access attempt open in a new tab or window then you should definitely use the Toolbar Button. Clicking on the Toolbar Button will give you access to the popup window shown here…otherwise the access attempt will happen in the current tab. Here is the result for the website that we wanted to view using the Google Listing. Followed by the Google (text only) Listing. The results with the different services will depend on how recently the webpage was published/set up. View Older Versions of Currently Accessible Websites Just for fun we decided to try the extension out on the How-To Geek website to view an older version of the homepage. Using the Toolbar Button and clicking on The Internet Archive brought up the following page…we decided to try the Nov. 28, 2006 listing. As you can see things have really changed between 2006 and now…Resurrect Pages can be very useful for anyone who is interested in how websites across the web have grown and changed over the years. Conclusion If you encounter a webpage that is offline or overloaded by sudden popularity then the Resurrect Pages extension can help you get access to the information that you need using a cached version. Links Download the Resurrect Pages extension (Mozilla Add-ons) Similar Articles Productive Geek Tips Remove Colors and Background Images in WebpagesGet Last Accessed File Time In Ubuntu LinuxCustomize the Reading Format for Webpages in FirefoxGet Access to 100+ URL Shortening Services in FirefoxAccess Cached Versions of Webpages When a Website is Down TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips VMware Workstation 7 Acronis Online Backup DVDFab 6 Revo Uninstaller Pro Enable or Disable the Task Manager Using TaskMgrED Explorer++ is a Worthy Windows Explorer Alternative Error Goblin Explains Windows Error Codes Twelve must-have Google Chrome plugins Cool Looking Skins for Windows Media Player 12 Move the Mouse Pointer With Your Face Movement Using eViacam

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• A sample Memento pattern: Is it correct?

  - by TheSilverBullet

  Following this query on memento pattern, I have tried to put my understanding to test. Memento pattern stands for three things: Saving state of the "memento" object for its successful retrieval Saving carefully each valid "state" of the memento Encapsulating the saved states from the change inducer so that each state remains unaltered Have I achieved these three with my design? Problem This is a zero player game where the program is initialized with a particular set up of chess pawns - the knight and queen. Then program then needs to keep adding set of pawns or knights and queens so that each pawn is "safe" for the next one move of every other pawn. The condition is that either both pawns should be placed, or none of them should be placed. The chessboard with the most number of non conflicting knights and queens should be returned. Implementation I have 4 classes for this: protected ChessBoard (the Memento) private int [][] ChessBoard; public void ChessBoard(); protected void SetChessBoard(); protected void GetChessBoard(int); public Pawn This is not related to memento. It holds info about the pawns public enum PawnType: int { Empty = 0, Queen = 1, Knight = 2, } //This returns a value that shown if the pawn can be placed safely public bool IsSafeToAddPawn(PawnType); public CareTaker This corresponds to caretaker of memento This is a double dimentional integer array that keeps a track of all states. The reason for having 2D array is to keep track of how many states are stored and which state is currently active. An example: 0 -2 1 -1 2 0 - This is current state. With second index 0/ 3 1 - This state has been saved, but has been undone private int [][]State; private ChessBoard [] MChessBoard; //This gets the chessboard at the position requested and assigns it to originator public ChessBoard GetChessBoard(int); //This overwrites the chessboard at given position public void SetChessBoard(ChessBoard, int); private int [][]State; public PlayGame (This is the originator) private bool status; private ChessBoard oChessBoard; //This sets the state of chessboard at position specified public SetChessBoard(ChessBoard, int); //This gets the state of chessboard at position specified public ChessBoard GetChessBoard(int); //This function tries to place both the pawns and returns the status of this attempt public bool PlacePawns(Pawn);

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• Ubuntu 12.10 graphics does not work properly

  - by madox2

  My graphic on ubuntu 12.10 does not work as well as on 12.04. After upgrade I installed driver sudo apt-add-repository ppa:ubuntu-x-swat/x-updates sudo apt-get update sudo apt-get install nvidia-current for my Nvidia 450 GTS graphics card. But sometimes I see slight lag on my videos played in VLC player, some of desktop and window effects are lagging, sometimes I can see an indescribable souce of pixels on my screen at the start of ubuntu and so on. I feel difference between 12.04 and 12.10 in favour of former version. Does anyone know whats wrong or what I am missing? here is output of lspci -k: 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) Kernel driver in use: pcieport Kernel modules: shpchp 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) Subsystem: Giga-byte Technology Device 1c3a Kernel driver in use: mei Kernel modules: mei 00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) Subsystem: Giga-byte Technology Device 5006 Kernel driver in use: ehci_hcd 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05) Subsystem: Giga-byte Technology Device a000 Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b5) Kernel driver in use: pcieport Kernel modules: shpchp 00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) Subsystem: Giga-byte Technology Device 5006 Kernel driver in use: ehci_hcd 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a5) 00:1f.0 ISA bridge: Intel Corporation H61 Express Chipset Family LPC Controller (rev 05) Subsystem: Giga-byte Technology Device 5001 Kernel driver in use: lpc_ich Kernel modules: lpc_ich 00:1f.2 IDE interface: Intel Corporation 6 Series/C200 Series Chipset Family 4 port SATA IDE Controller (rev 05) Subsystem: Giga-byte Technology Device b002 Kernel driver in use: ata_piix 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05) Subsystem: Giga-byte Technology Device 5001 Kernel modules: i2c-i801 00:1f.5 IDE interface: Intel Corporation 6 Series/C200 Series Chipset Family 2 port SATA IDE Controller (rev 05) Subsystem: Giga-byte Technology Device b002 Kernel driver in use: ata_piix 01:00.0 VGA compatible controller: NVIDIA Corporation GF116 [GeForce GTS 450] (rev a1) Subsystem: CardExpert Technology Device 0401 Kernel driver in use: nvidia Kernel modules: nvidia_current, nouveau, nvidiafb 01:00.1 Audio device: NVIDIA Corporation GF116 High Definition Audio Controller (rev a1) Subsystem: CardExpert Technology Device 0401 Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel 03:00.0 Ethernet controller: Atheros Communications Inc. AR8151 v2.0 Gigabit Ethernet (rev c0) Subsystem: Giga-byte Technology Device e000 Kernel driver in use: atl1c Kernel modules: atl1c

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