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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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  • The Best How-To Geek Articles for August 2012

    - by Asian Angel
    This past month we covered topics such as how to make Mozilla Firefox fast again, 11 ways to make your LastPass account even more secure, how to install extensions from outside the Chrome web store, and more. Join us as we look back at the best articles for August. HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows? Java is Insecure and Awful, It’s Time to Disable It, and Here’s How What Are the Windows A: and B: Drives Used For?

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  • Particle effect after the bullet

    - by Siddharth
    In my game, I fire a bullet from the gun along with that I generate a particle behind the bullet so that I look like fire effect after the bullet. But my problem is that the position I got from the bullet was distance in place. So basically I want to say that the bullet speed was high for that reason I got coordinate for the particle generation was far from each other like dot dot effect. But I want continuous flow of particle behind the bullet. So please provide any guidance for my problem

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  • Best way to implement an AI for Dominion? [on hold]

    - by j will
    I'm creating a desktop client and server backend for the game, Dominion, by Donald X. Vaccarino. I've been reading up on AI techniques and algorithms and I just wanted to what is the best way to implement an AI for such a game? Would it better to look at neural networks, genetic algorithms, decision trees, fuzzy logic, or any other methodology? For those who do not know how Dominion works, check out this part of the wikipedia article: http://en.wikipedia.org/wiki/Dominion_(card_game)#Gameplay

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  • Gridview Header Filter

    To help you filter gridview using it's header...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • SQL SERVER FIX : ERROR : 4214 BACKUP LOG cannot be performed because there is no current database b

    I recently got following email from one of the reader.Hi Pinal,Even thought my database is in full recovery mode when I try to take log backup I am getting following error.BACKUP LOG cannot be performed because there is no current database backup. (Microsoft.SqlServer.Smo)How to fix it?Thanks,[name and email removed as requested]Solution / Fix:This error can [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • SQLAuthority News Microsoft SQL Server Protocol Documentation Download

    The Microsoft SQL Server protocol documentation provides detailed technical specifications for Microsoft proprietary protocols (including extensions to industry-standard or other published protocols) that are implemented and used in Microsoft SQL Server to interoperate or communicate with Microsoft products.The documentation includes a set of companion overview and reference documents that supplement [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • New Videos in the Tailspin Spyworks series live.

    Weve posted a few new videos in the Tailspin Spyworks tutorial serials. Many more in the works ! http://www.asp.net/web-forms/fundamentals http://www.asp.net/aspnet-4/videos http://www.asp.net/aspnet-4/videos/tailspin-spyworks-display-the-product-list http://www.asp.net/aspnet-4/videos/tailspin-spyworks-display-per-product-details...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Ubuntu in its own words

    <b>Tux Radar:</b> "To kill the time between now and the announcement of what's to come in the next version, we decided to take a look at the keywords used to describe previous Ubuntu releases to see how priorities have changed over the years"

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  • Chrome UI styles are not working under Ubuntu! GTK Theme is not working!

    - by EApubs
    Chrome Version : 31.0.1650.63 (Official Build 238485) Extensions : Google docs, Lastpass Im on a brand new system, just installed Ubuntu. When I open chrome, normally the search box, alert windows are styled according to my current system GTK theme. But now they look like classic windows theme! Tried different themes and adjusting the theme under Settings Appearance in Chrome but still no use. How to fix this? Here's a screenshot :

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  • All About Assemblies

    An article describing Assemblies...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • ASP.NET AJAX MultiHandleSliderExtender - Slide by Year and Month

    Tutorial - How to utilize ASP.NET MultiHandleSlider extender to select year and month in a range, and set the Chart controls in action...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Visual Studio Ultimate RoadMap

    - by TATWORTH
    At http://blogs.msdn.com/b/jasonz/archive/2012/03/27/visual-studio-ultimate-roadmap.aspx, Jason Zander has discussed the roadmap for Visual Studio 11 Ultimate. There are great advantages to Ultimate, if it is available to you, use it.At http://msdn.microsoft.com/en-us/library/ff636699.aspx, there is a list of feature packs for Visual Studio 10. Well worth a look if you have Visual Studio 10 Professional or Ultimate.

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  • Developing and Deploying with SQL Azure

    Microsoft published a short SQL Azure deployment document: This document provides guidelines on how to deploy an existing on-premise SQL Server database into SQL Azure. It also discusses best practices related to data migration. Download it here var addthis_pub="guybarrette";...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Download the Spectacular Skies Theme for Windows 7

    - by Asian Angel
    Freshening up the scenery on your desktop every so often can help make the time spent in front of your computer more pleasant. Today’s featured theme will add a dramatic look to your desktop with a terrific set of Spectacular Skies wallpapers. The theme comes with eleven images featuring the awesome, eye-catching photography of Marco Muller. Download the Spectacular Skies Theme [via Softpedia] How Hackers Can Disguise Malicious Programs With Fake File Extensions Can Dust Actually Damage My Computer? What To Do If You Get a Virus on Your Computer

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  • google analytics - real-time user stats vs audience overview user stats

    - by udog
    When looking at the real-time analytics reporting for our app, it shows around 150-180 users, say around 10AM (our peak usage time). When I look at the Audience Overview report for the same day (hourly breakdown), the number of users shown for the 10AM hour is over 1000. I'm sure this has to do with some sort of aggregation, but I would like to know more about how these two numbers are calculated in order to understand it.

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  • Report: 8 Advanced OpenOffice.org Add-ons

    OpenOffice is the best cross-platform office productivity suite, but it misses a few popular features like a clipart gallery, Google Docs integration, PDF import, and more than basic templates. But they're out there if you know where to look, and Eric Geier shows the way.

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  • Truncate Log File in SQL Server 2005

    A tool that facilitates the truncation of SQL log file...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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