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• (Abstract) Game engine design

  - by lukeluke

  I am writing a simple 2D game (for mobile platforms) for the first time. From an abstract point of view, i have the main player controlled by the human, the enemies, elments that will interact with the main player, other living elements that will be controlled by a simple AI (both enemies and non-enemies). The human player will be totally controlled by the player, the other actors will be controlled by AI. So i have a class CActor and a class CActorLogic to start with. I would define a CActor subclass CHero (the main player controlled with some input device). This class will probably implement some type of listener, in order to capture input events. The other players controlled by the AI will be probably a specific subclass of CActor (a subclass per-type, obviously). This seems to be reasonable. The CActor class should have a reference to a method of CActorLogic, that we will call something like CActorLogic::Advance() or similar. Actors should have a visual representation. I would introduce a CActorRepresentation class, with a method like Render() that will draw the actor (that is, the right frame of the right animation). Where to change the animation? Well, the actor logic method Advance() should take care of checking collisions and other things. I would like to discuss the design of a game engine (actors, entities, objects, messages, input handling, visualization of object states (that is, rendering, sound output and so on)) but not from a low level point of view, but from an high level point of view, like i have described above. My question is: is there any book/on line resource that will help me organize things (using an object oriented approach)? Thanks

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• Priority Manager&ndash;Part 1- Laying out the plan

  - by Patrick Liekhus

  Now that we have shown the EDMX with XPO/XAF and how use SpecFlow and BDD to run EasyTest scripts, let’s put it all together and show the evolution of a project using all the tools combined. I have a simple project that I use to track my priorities throughout the day.  It uses some of Stephen Covey’s principles from The 7 Habits of Highly Effective People.  The idea is to write down all your priorities the night before and rank them.  This way when you get started tomorrow you will have your list of priorities.  Now it’s not that new things won’t appear tomorrow and reprioritize your list, but at least now you can track them.  My idea is to create a project that will allow you manage your list from your desktop, a web browser or your mobile device.  This way your list is never too far away.  I will layout the data model and the additional concepts as time progresses. My goal is to show the power of all of these tools combined and I thought the best way would be to build a project in sequence.  I have had this idea for quite some time so let’s get it completed with the outline below. Here is the outline of the series of post in the near future: Part 2 – Modeling the Business Objects Part 3 – Changing XAF Default Properties Part 4 – Advanced Settings within Liekhus EDMX/XAF Tool Part 5 – Custom Business Rules Part 6 – Unit Testing Our Implementation Part 7 – Behavior Driven Development (BDD) and SpecFlow Tests Part 8 – Using the Windows Application Part 9 – Using the Web Application Part 10 – Exposing OData from our Project Part 11 – Consuming OData with Excel PowerPivot Part 12 – Consuming OData with iOS Part 13 – Consuming OData with Android Part 14 – What’s Next I hope this helps outline what to expect.  I anticipate that I will have additional topics mixed in there but I plan on getting this outline completed within the next several weeks.  Thanks

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• Assigning valid moves on board game

  - by Kunal4536

  I am making a board game in unity 4.3 2d similar to checkers. I have added an empty object to all the points where player can move and added a box collider to each empty object.I attached a click to move script to each player token. Now I want to assign valid moves. e.g. as shown in picture... Players can only move on vertex of each square.Player can only move to adjacent vertex.Thus it can only move from red spot to yellow and cannot move to blue spot.There is another condition which is : if there is the token of another player at the yellow spot then the player cannot move to that spot. Instead it will have to go from red to green spot. How can I find the valid moves of the player by scripting. I have another problem with click to move. When I click all the objects move to that position.But I only want to move a single token. So what can i add to script to select a specific object and then click to move the specific object.Here is my script for click to move. var obj:Transform; private var hitPoint : Vector3; private var move: boolean = false; private var startTime:float; var speed = 1; function Update () { if(Input.GetKeyDown(KeyCode.Mouse0)) { var hit : RaycastHit; // no point storing this really var ray = Camera.main.ScreenPointToRay (Input.mousePosition); if (Physics.Raycast (ray, hit, 10000)) { hitPoint = hit.point; move = true; startTime = Time.time; } } if(move) { obj.position = Vector3.Lerp(obj.position, hitPoint, Time.deltaTime * speed); if(obj.position == hitPoint) { move = false; } } }`

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• Where to place the R code for R+Sweave+LaTeX workflow

  - by claytontstanley

  I spent the last week learning 3 new tools: R, Sweave, and LaTeX. One question that came to my mind though when working through my first project: Where do I place the majority of the R code? The tutorials that I read online placed the majority of the R code in the LaTeX .Rnw file. However, I find having a bunch of R calculations in the LaTeX file distracting. What I do find extremely helpful (of course) is to call out to R code in the LaTeX file and embed the result. So the workflow I've been using is to place 99% of my R code in my .R file. I run that file first, save a bunch of calculations as objects, and output the .Rout file once finished (to save the work). Then when running Sweave, I load up that .Rout file, so that I have the majority of my calculations already completed and in the Sweave R session. Then my LaTeX callouts to R are quite simple: Just give me the XTable stored in 'res.table', or give me the result of an already-computed calculation stored in the variable 'res'. So I push towards the minimal amount of R code in the LaTex file possible, to achieve the desired result (embedding stats results in the LaTeX writeup). Does anyone have any experience with this approach? I'm just worried I might run into trouble further down the line, when I start really trying to load up and leverage this workflow.

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• Design for object with optional and modifiable attributtes?

  - by Ikuzen

  I've been using the Builder pattern to create objects with a large number of attributes, where most of them are optional. But up until now, I've defined them as final, as recommended by Joshua Block and other authors, and haven't needed to change their values. I am wondering what should I do though if I need a class with a substantial number of optional but non-final (mutable) attributes? My Builder pattern code looks like this: public class Example { //All possible parameters (optional or not) private final int param1; private final int param2; //Builder class public static class Builder { private final int param1; //Required parameters private int param2 = 0; //Optional parameters - initialized to default //Builder constructor public Builder (int param1) { this.param1 = param1; } //Setter-like methods for optional parameters public Builder param2(int value) { param2 = value; return this; } //build() method public Example build() { return new Example(this); } } //Private constructor private Example(Builder builder) { param1 = builder.param1; param2 = builder.param2; } } Can I just remove the final keyword from the declaration to be able to access the attributes externally (through normal setters, for example)? Or is there a creational pattern that allows optional but non-final attributes that would be better suited in this case?

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• Overwhelmed by complex C#/ASP.NET project in Visual Studio 2008

  - by Darren Cook

  I have been hired as a junior programmer to work on projects that extend existing functionality in a very large, complex solution. The code base consists of C#, ASP.NET, jQuery, javascript, html and xml. I have some knowledge of all these in addition to fair knowledge of object-oriented programming and its fundamental concepts of inheritance, abstraction, polymorphism and encapsulation. I can follow code up through its base classes, interfaces, abstract classes and understand a large part of the code that I read while doing this. However, this solution is so humongous and so many things get tied together whenever I navigate through the code that I feel absolutely overwhelmed. I often find myself unable to fully follow everything that is going on with objects being serialized, large amounts of C# and javascript operating on the same pages and methods being called from template files that consist mainly of markup. I love learning about code, but trying to deal with this really stresses me out. Additionally, I do know that a significant amount of unit testing has been done but I know nothing about unit testing or how to utilize it. Any advice anyone could offer me regarding dealing with a large code base while using Visual Studio 2008 would be greatly appreciated. Are there tools that I can use to help get a handle on what is going on? Perhaps there are things even in Visual Studio that I am not aware of. How can I follow the code to low level functionality in order to get a better grasp of what is going on at a high level?

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• Is there ever a reason to do all an object's work in a constructor?

  - by Kane

  Let me preface this by saying this is not my code nor my coworkers' code. Years ago when our company was smaller, we had some projects we needed done that we did not have the capacity for, so they were outsourced. Now, I have nothing against outsourcing or contractors in general, but the codebase they produced is a mass of WTFs. That being said, it does (mostly) work, so I suppose it's in the top 10% of outsourced projects I've seen. As our company has grown, we've tried to take more of our development in house. This particular project landed in my lap so I've been going over it, cleaning it up, adding tests, etc etc. There's one pattern I see repeated a lot and it seems so mindblowingly awful that I wondered if maybe there is a reason and I just don't see it. The pattern is an object with no public methods or members, just a public constructor that does all the work of the object. For example, (the code is in Java, if that matters, but I hope this to be a more general question): public class Foo { private int bar; private String baz; public Foo(File f) { execute(f); } private void execute(File f) { // FTP the file to some hardcoded location, // or parse the file and commit to the database, or whatever } } If you're wondering, this type of code is often called in the following manner: for(File f : someListOfFiles) { new Foo(f); } Now, I was taught long ago that instantiated objects in a loop is generally a bad idea, and that constructors should do a minimum of work. Looking at this code it looks like it would be better to drop the constructor and make execute a public static method. I did ask the contractor why it was done this way, and the response I got was "We can change it if you want". Which was not really helpful. Anyway, is there ever a reason to do something like this, in any programming language, or is this just another submission to the Daily WTF?

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• What do you do to make sure you take proper/enough breaks, while avoiding unwanted side-effects of break taking?

  - by blueberryfields

  preamble It seems to me that computer programmers are one of a select few groups of people who actually take pleasure from sitting in front of computers for long periods of time. Most people in other professions actively dislike their time at computers, and do their best to avoid it (so, I assume, they don't have problems taking breaks). At least for me, having external cues for taking breaks, and clear instructions on what to do with each break (stretch, go for a walk, close my eyes, look into a distance of preferably a few km and focus on faraway objects, etc...), is a must. So far, I've just been making up the breaks and tools to get them as I go along, based on what looks to be low-specificity information found on the net (generic stuff ala ergonomics advice for office staff). This has led to all sorts of side effects - loss of attention as I get distracted if I walk around, breaks in flow with alarm clocks interrupting my thoughts, and people around me assuming I'm low on work due to the frequency of my walking around compared to everyone else. /preamble tl;dr Taking breaks is important My internal break taking system doesn't work, and ad-hoc ones have unwanted side effects What do you do to make sure you take proper breaks? How do you avoid unwanted side-effects, such as getting distracted or interrupting flow or giving your co-workers the impression you're spending a lot of time goofing off?

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• The NEW MySQL for Developers Course

  - by Antoinette O'Sullivan

  Just Released - The new MySQL for Developers training course.  This 5 day course covers everything a developer needs to know when planning, designing and implementing applications using MySQL, with realistic examples using languages such as Java and PHP. This course gives an in-depth coverage of statements that access and modify data, and shows the student how to design and create other MySQL objects such as triggers, views, and stored procedures. You can take this course: From your desk as a live virtual offering. There are over 800 events on the schedule so you should find one in a timezone near you. The virtual events are also delivered in many languages including English, German, Korean, Latin American Spanish, ... In a classroom. Here is a sample of events on the schedule:  Location  Date  Delivery Language  Prague, Czech Republic 8 October 2012 Czech  Warsaw, Poland 5 November 2012 Polish  Wien, Austria  12 November 2012 German  London, England 15 October 2012 English  Bern, Switzerland  11 April 2013 German  Zurich, Switzerland 14 November 2012 German  Milan, Italy 19 November 2012  Italian  Rome, Italy  15 October 2012  Italian  Gummersbach, Germany  11 February 2013 German  Hamburg, Germany  12 November 2012  German Munich, Germany  10 June 2013  German  Lisbon, Portugal 26 November 2012 European Portuguese  Porto, Portugal 18 February 2013 European Portuguese  Nairobi, Kenya  19 November 2012  English  Madrid, Spain  10 December 2012  Spanish Petaling Jaya, Malaysia  15 October 2012  English  Bangkok, Thailand  29 October 2012  English For further information on the Authentic MySQL Curriculum, to register for an event or express interest in an additional event, go to http://oracle.com/education/mysql.

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• Looking for a small, light scene graph style abstraction lib for shader based OpenGL

  - by Pris

  I'm looking for a 'lean and mean' c/c++ scene graph library for OpenGL that doesn't use any deprecated functionality. It should be cross platform (strictly speaking I just dev on Linux so no love lost if it doesn't work on Windows), and it should be possible to deploy to mobile targets (ie OpenGLES2, and no crazy mandatory dependencies that wouldn't port well to modern mobile frameworks like iOS, Android, etc), with a license that's compatible with closed source software (LGPL or more liberal). Specific nice-to-haves would be: Cameras and Viewers (trackball, fly-by, etc) Object transform hierarchies (if B is a child of A, and you move A, B has the same transform applied to it) Simple animation Scene optimization (frustum culling, use VBOs, minimize state changes, etc) Text I've played around with OpenSceneGraph a lot and it's pretty amazing for fixed function pipeline stuff, but I've had a few of problems using it with the programmable pipeline and after going through their mailing list, it seems several people have had similar issues (going back years). Kitware's VES looks neat (http://www.vtk.org/Wiki/VES), but VES + VTK is pretty heavy. VTK is also typically for analyzing scientific data and I've read that it's not that appropriate for a general use case (not that great at rendering a lot of objects on scene,etc) I'm currently looking at VisualizationLibrary (http://www.visualizationlibrary.org/documentation/pag_gallery.html) which looks like it offers some of the functionality I'd like, but it doesn't explicitly support mobile targets. Other solutions like Ogre, Horde3D, Irrlicht, etc tend to be full on game engines and that's not really what I'm looking for. I'd like some suggestions for other libraries that I may have missed... please note I'm not willing to roll my own solution from scratch.

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• Building a template engine - starting point

  - by Anirudh

  We're building a Django-based project with a template component. This component will be separate from the project as such and can be Django/Python, Node, Java or whatever works. The template has to be rendered into HTML. The templates will contain references to objects with properties that are defined in the DB, say, a Bus. For eg, it could be something like [object type="vehicle" weight="heavy"] and it would have to pull a random object from the DB fulfilling the criteria : type="vehicle" weight="heavy" (bus/truck/jet) and then substitute that tag with an image, say, of a Bus. Also it would have to be able to handle some processing. Eg: What is [X type="integer" lte="10"] + [Y type="integer" lte="10"] [option X+Y correct_ans="true"] [option X-Y correct_ans="false"] [option X+y+1 correct_ans="false"] The engine would be expected to fill in a random integer value <= 10 for X and Y and show radioboxes for each of the options. Would also have to store the fact that the first option is the correct answer. Does it to make sense to write something from the scratch? Or is it better to use an existing templating system (like Django's own templating system) as a starting point? Any suggestions on how I can approach this?

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• Should I use an interface when methods are only similar?

  - by Joshua Harris

  I was posed with the idea of creating an object that checks if a point will collide with a line: public class PointAndLineSegmentCollisionDetector { public void Collides(Point p, LineSegment s) { // ... } } This made me think that if I decided to create a Box object, then I would need a PointAndBoxCollisionDetector and a LineSegmentAndBoxCollisionDetector. I might even realize that I should have a BoxAndBoxCollisionDetector and a LineSegmentAndLineSegmentCollisionDetector. And, when I add new objects that can collide I would need to add even more of these. But, they all have a Collides method, so everything I learned about abstraction is telling me, "Make an interface." public interface CollisionDetector { public void Collides(Spatial s1, Spatial s2); } But now I have a function that only detects some abstract class or interface that is used by Point, LineSegment, Box, etc.. So if I did this then each implementation would have to to a type check to make sure that the types are the appropriate type because the collision algorithm is different for each different type match up. Another solution could be this: public class CollisionDetector { public void Collides(Point p, LineSegment s) { ... } public void Collides(LineSegment s, Box b) { ... } public void Collides(Point p, Box b) { ... } // ... } But, this could end up being a huge class that seems unwieldy, although it would have simplicity in that it is only a bunch of Collide methods. This is similar to C#'s Convert class. Which is nice because it is large, but it is simple to understand how it works. This seems to be the better solution, but I thought I should open it for discussion as a wiki to get other opinions.

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• Ninject/DI: How to correctly pass initialisation data to injected type at runtime

  - by MrLane

  I have the following two classes: public class StoreService : IStoreService { private IEmailService _emailService; public StoreService(IEmailService emailService) { _emailService = emailService; } } public class EmailService : IEmailService { } Using Ninject I can set up bindings no problem to get it to inject a concrete implementation of IEmailService into the StoreService constructor. StoreService is actually injected into the code behind of an ASP.NET WebForm as so: [Ninject.Inject] public IStoreService StoreService { get; set; } But now I need to change EmailService to accept an object that contains SMTP related settings (that are pulled from the ApplicationSettings of the Web.config). So I changed EmailService to now look like this: public class EmailService : IEmailService { private SMTPSettings _smtpSettings; public void SetSMTPSettings(SMTPSettings smtpSettings) { _smtpSettings = smtpSettings; } } Setting SMTPSettings in this way also requires it to be passed into StoreService (via another public method). This has to be done in the Page_Load method in the WebForms code behind (I only have access to the Settings class in the UI layer). With manual/poor mans DI I could pass SMTPSettings directly into the constructor of EmailService and then inject EmailService into the StoreService constructor. With Ninject I don't have access to the instances of injected types outside of the objects they are injected to, so I have to set their data AFTER Ninject has already injected them via a separate public setter method. This to me seems wrong. How should I really be solving this scenario?

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• How to remove a box2d body when collision happens?

  - by Ayham

  I’m still new to java and android programming and I am having so much trouble Removing an object when collision happens. I looked around the web and found that I should never handle removing BOX2D bodies during collision detection (a contact listener) and I should add my objects to an arraylist and set a variable in the User Data section of the body to delete or not and handle the removing action in an update handler. So I did this: First I define two ArrayLists one for the faces and one for the bodies: ArrayList<Sprite> myFaces = new ArrayList<Sprite>(); ArrayList<Body> myBodies = new ArrayList<Body>(); Then when I create a face and connect that face to its body I add them to their ArrayLists like this: face = new AnimatedSprite(pX, pY, pWidth, pHeight, this.mBoxFaceTextureRegion); Body BoxBody = PhysicsFactory.createBoxBody(mPhysicsWorld, face, BodyType.DynamicBody, objectFixtureDef); mPhysicsWorld.registerPhysicsConnector(new PhysicsConnector(face, BoxBody, true, true)); myFaces.add(face); myBodies.add(BoxBody); now I add a contact listener and an update handler in the onloadscene like this: this.mPhysicsWorld.setContactListener(new ContactListener() { private AnimatedSprite face2; @Override public void beginContact(final Contact pContact) { } @Override public void endContact(final Contact pContact) { } @Override public void preSolve(Contact contact,Manifold oldManifold) { } @Override public void postSolve(Contact contact,ContactImpulse impulse) { } }); scene.registerUpdateHandler(new IUpdateHandler() { @Override public void reset() { } @Override public void onUpdate(final float pSecondsElapsed) { } }); My plan is to detect which two bodies collided in the contact listener by checking a variable from the user data section of the body, get their numbers in the array list and finally use the update handler to remove these bodies. The questions are: Am I using the arraylist correctly? How to add a variable to the User Data (the code please). I tried removing a body in this update handler but it still throws me NullPointerException , so what is the right way to add an update handler and where should I add it. Any other advices to do this would be great. Thanks in advance.

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• CodePlex Daily Summary for Saturday, December 25, 2010

  CodePlex Daily Summary for Saturday, December 25, 2010Popular ReleasesCosmos (C# Open Source Managed Operating System): Release 71246: This is the first release featuring VS2010 support. Express support (C#) should work as well. Release notes: http://www.gocosmos.org/Releases/71246/NoSimplerAccounting: NoSimplerAccounting 6.0: -Fixed a bug in expense category report.NHibernate Mapping Generator: NHibernate Mapping Generator 2.0: Added support for Postgres (Thanks to Angelo)NewLife XCode: XCode v6.5.2010.1223 ????（????v3.5??）: XCode v6.5.2010.1223 ????，??： NewLife.Core ??? NewLife.Net ??? XControl ??? XTemplate ????，??C#?????? XAgent ???? NewLife.CommonEnitty ??????（???，XCode??????） XCode?? ?????????，??????????????????，?????95% XCode v3.5.2009.0714 ??，?v3.5?v6.0???????????????，?????????。v3.5???????????，??????????????。 XCoder ??XTemplate?????????，????????XCode??? XCoder_Src ???????（????XTemplate????），??????????????????MiniTwitter: 1.64: MiniTwitter 1.64 ???? ?? 1.63 ??? URL ??????????????Ajax ASP.Net Forum: InSeCla Forum Software v0.1.9: *VERSION: 0.1.9* HAPPY CHRISTMAS FEATURES ADDED Added features customizabled per category level (Customize at ADMIN/Categories Tab) Allow Anonymous Threads, Allow Anonymous Post Virtual URLs (friendly urls) has finally added And you can have some forum (category) using virtual urls and other using normal urls. Check !, as this improve the SEO indexing results Moderation Instant On: Delete Thread, Move Thread Available to users being members of moderators or administrators InstantO...VivoSocial: VivoSocial 7.4.0: Please see changes: http://support.vivoware.com/project/ChangeLog.aspx?PROJID=48Umbraco CMS: Umbraco 4.6 Beta - codename JUNO: The Umbraco 4.6 beta (codename JUNO) release contains many new features focusing on an improved installation experience, a number of robust developer features, and contains more than 89 bug fixes since the 4.5.2 release. Improved installer experience Updated Starter Kits (Simple, Blog, Personal, Business) Beautiful, free, customizable skins included Skinning engine and Skin customization (see Skinning Documentation Kit) Default dashboards on install with hide option Updated Login t...SSH.NET Library: 2010.12.23: This release includes some bug fixes and few new fetures. Fixes Allow to retrieve big directory structures ssh-dss algorithm is fixed Populate sftp file attributes New Features Support for passhrase when private key is used Support added for diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha256 and diffie-hellman-group-exchange-sha1 key exchange algorithms Allow to provide multiple key files for authentication Add support for "keyboard-interactive" authentication method...ASP.NET MVC SiteMap provider: MvcSiteMapProvider 2.3.0: Using NuGet?MvcSiteMapProvider is also listed in the NuGet feed. Learn more... Like the project? Consider a donation!Donate via PayPal via PayPal. Release notesThis will be the last release targeting ASP.NET MVC 2 and .NET 3.5. MvcSiteMapProvider 3.0.0 will be targeting ASP.NET MVC 3 and .NET 4 Web.config setting skipAssemblyScanOn has been deprecated in favor of excludeAssembliesForScan and includeAssembliesForScan ISiteMapNodeUrlResolver is now completely responsible for generating th...SuperSocket, an extensible socket application framework: SuperSocket 1.3 beta 2: Compared with SuperSocket 1.3 beta 1, the changes listed below have been done in SuperSocket 1.3 beta 2: added supports for .NET 3.5 replaced Logging Application Block of EntLib with Log4Net improved the code about logging fixed a bug in QuickStart sample project added IPv6 supportTibiaPinger: TibiaPinger v1.0: TibiaPinger v1.0Media Companion: Media Companion 3.400: Extract the entire archive to a folder which has user access rights, eg desktop, documents etc. A manual is included to get you startedMulticore Task Framework: MTF 1.0.1: Release 1.0.1 of Multicore Task Framework.EnhSim: EnhSim 2.2.6 ALPHA: 2.2.6 ALPHAThis release supports WoW patch 4.03a at level 85 To use this release, you must have the Microsoft Visual C++ 2010 Redistributable Package installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=A7B7A05E-6DE6-4D3A-A423-37BF0912DB84 To use the GUI you must have the .NET 4.0 Framework installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=9cfb2d51-5ff4-4491-b0e5-b386f32c0992 - Fixing up some r...ASP.NET MVC Project Awesome (jQuery Ajax helpers): 1.4.3: Helpers (controls) that you can use to build highly responsive and interactive Ajax-enabled Web applications. These helpers include Autocomplete, AjaxDropdown, Lookup, Confirm Dialog, Popup Form, Popup and Pager new stuff: Improvements for confirm, popup, popup form RenderView controller extension the user experience for crud in live demo has been substantially improved + added search all the features are shown in the live demoGanttPlanner: GanttPlanner V1.0: GanttPlanner V1.0 include GanttPlanner.dll and also a Demo application.N2 CMS: 2.1 release candidate 3: * Web platform installer support available N2 is a lightweight CMS framework for ASP.NET. It helps you build great web sites that anyone can update. Major Changes Support for auto-implemented properties ({get;set;}, based on contribution by And Poulsen) A bunch of bugs were fixed File manager improvements (multiple file upload, resize images to fit) New image gallery Infinite scroll paging on news Content templates First time with N2? Try the demo site Download one of the templ...TweetSharp: TweetSharp v2.0.0.0 - Preview 6: Documentation for this release may be found at http://tweetsharp.codeplex.com/wikipage?title=UserGuide&referringTitle=Documentation. Note: This code is currently preview quality. Preview 6 ChangesMaintenance release with user reported fixes Preview 5 ChangesMaintenance release with user reported fixes Preview 4 ChangesReintroduced fluent interface support via satellite assembly Added entities support, entity segmentation, and ITweetable/ITweeter interfaces for client development Numer...Team Foundation Server Administration Tool: 2.1: TFS Administration Tool 2.1, is the first version of the TFS Administration Tool which is built on top of the Team Foundation Server 2010 object model. TFS Administration Tool 2.1 can be installed on machines that are running either Team Explorer 2010, or Team Foundation Server 2010.New ProjectsAzure Configuration File Comparer: Compares two Azure configuration files and highlights the differencesConquera: Conquera is a Xna fantasy turn-based strategy, where players capture castles and resources to expand, defend and improve their territories. eSCADA: Sistema de supervision, control y adquisicion de datos (SCADA) desarrollado sobre la plataforma .net 4.0Jing SaaS Platform: This SaaS Platform is built for fast form based project delivery.MatchChow: MatchChowMeshSharp: MeshSharp is a Navigational Mesh pathfinding library for XNA written in C#. This will use a combination of algorithms; A* (Astar), Funnel, Steering and Flocking. This will be a similar project to the recast navigation project (written in C++).MonJardin: MonJardin est une application pour le jardin. Cette application effectue l'inventaire des plantations et les récoltes d'un jardin.Open Bitrac: Open Bitrac is a asp.net blog system!PAMS: PAN Applications Management System for PAN Service Agents and AgenciesPassword Manager: Password Manager application for the Windows Phone, Desktop, ASP.NET/Silverlight platformsRandomRest: Creating a class library that is more random than the standard system.random by using crowd sourcingSimple Config Editor: A .Net Library to Create and Modify Config Files, Based on XML.SQL UML PROFILE: This project envolves the creation of an UML Profile for Visual Studio 2010 that allows creating database diagrams with UML objects in modeling projects. We will also create a T4 template to generate SQL Scripts from the modeling projectTSQL Parser based on Database Edition GDR: TSQL Parser based in Database Edition GDR, this particular implementation help in finding Tables and columns used in TSQL. For this project to work you will need to install Database Edition GDR. http://www.microsoft.com/downloads/en/details.aspx?FamilyID=bb3ad767-5f69-4db9-b1c9-8WiiScanner: A project for scanning objects into virtual environments using WiiMotes.Windows Azure Development Toys: The Windows Azure Development Toys is a collaboration of many libraries, interfaces, adapters and plug-ins for Windows Azure project development. It will accelerate your development performance of your Windows Azure based application.

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• Object inheritance and method parameters/return types - Please check my logic

  - by user2368481

  I'm preparing for a test and doing practice questions, this one in particular I am unsure I did correctly: We are given a very simple UML diagram to demonstrate inheritance: I hope this is clear, it shows that W inherits from V and so on: |-----Y V <|----- W<|-----| |-----X<|----Z and this code: public X method1(){....} method2(new Y()); method2(method1()); method2(method3()); The questions and my answers: Q: What types of objects could method1 actually return? A: X and Z, since the method definition includes X as the return type and since Z is a kind of X is would be OK to return either. Q: What could the parameter type of method2 be? A: Since method2 in the code accepts Y, X and Z (as the return from method1), the parameter type must be either V or W, as Y,X and Z inherit from both of these. Q: What could return type of method3 be? A: Return type of method3 must be V or W as this would be consistent with answer 2.

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• Eclipse and Oracle Fusion Development - Free Virtual Event, July 10th

  - by Carlos Chang

    Below is one of many sessions covering Oracle Fusion Development.  It's a free virtual event on July 10. Live chats with Oracle's technical staff.  Check it out! Oracle Enterprise Pack for Eclipse - ADF Development Oracle ADF Development has never been easier in Eclipse. During this session we will explore best practices to use standard Java EE technologies like EJBs and JPA to build rich ADF applications based on ADF Data Controls, Task Flows, and ADF Faces components all within Oracle Enterprise Pack for Eclipse (OEPE) 12c. We will also look at how OEPE’s AppXRay technology enables developers to understand and visualize dependency relationships between ADF components, xml descriptors, and Java objects in order to drive validation, content assist, and refactoring. Free Virtual Developer Day - Fusion Middleware Development Join a free online developer day where you can learn about the various components that make up the Oracle Fusion Development platform including ADF, ADF Mobile, Oracle WebCenter Portal, Business Intelligence and more. Online seminars and hands-on labs available directly from your browser. Join us on July 10!  Register here. 

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• Should I cache the data or hit the database?

  - by JD01

  I have not worked with any caching mechanisms and was wondering what my options are in the .net world for the following scenario. We basically have a a REST Service where the user passes an ID of a Category (think folder) and this category may have lots of sub categories and each of the sub categories could have 1000 of media containers (think file reference objects) which contain information about a file that may be on a NAS or SAN server (files are videos in this case). The relationship between these categories is stored in a database together with some permission rules and meta data about the sub categories. So from a UI perspective we have a lazy loaded tree control which is driven by the user by clicking on each sub folder (think of Windows explorer). Once they come to a URL of the video file, they then can watch the video. The number of users could grow into the 1000s and the sub categories and videos could be in the 10000s as the system grows. The question is should we carry on the way it is currently working where each request hits the database or should we think about caching the data? We are on using IIS 6/7 and Asp.net.

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• Algorithm to measure how "diffused" 5,000 pennies are in an economy?

  - by makerofthings7

  Please allow me to use this example/metaphor to describe an algorithm I need. Objects There are 5 thousand pennies. There are 50 cups. There is a tracking history (Passport "stamp" etc) that is associated with each penny as it moves between cups. Definition I'll define a "highly diffused" penny as one that passes through many cups. A "poorly diffused" penny is one that either passes back and forth between 2 cups Question How can I objectively measure the diffusion of a penny as: The number of moves the penny has gone through The number of cups the penny has been in A unit of time (day, week, month) Why am I doing this? I want to detect if a cup is hoarding pennies. Resistance from bad actors Since hoarding is bad, the "bad cup" may simply solicit a partner and simply move pennies between each other. This will reduce the amount of time a coin isn't in transit, and would skew hoarding detection. A solution might be to detect if a cup (or set of cups) are common "partners" with each other, though I'm not sure how to think though this problem. Broad applicability Any assistance would be helpful, since I would think that this algorithm is common to Economics The study of migration patterns of animals, citizens of a country Other natural occurring phenomena ... and probably exists as a term or concept I'm unfamiliar with.

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• Download the Anime Angels Theme for Windows 7

  - by Asian Angel

  Do you have a passion for all things anime? Then you will definitely want to have a look at the Anime Angels Theme for Windows 7. This cute theme will give your desktop that extra bit of fun and spunk to help bring a smile to your face. The theme comes with 21 Hi-Res wallpapers of the cutest Anime Angels from around the web, a wonderful set of anime icons, and great system sounds to round out the perfect anime theme. Anime Angels Theme For Windows (Anime Themes) [VikiTech] Latest Features How-To Geek ETC How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Stop Believing TV’s Lies: The Real Truth About "Enhancing" Images The Legend of Zelda – 1980s High School Style [Video] Suspended Sentence is a Free Cross-Platform Point and Click Game Build a Batman-Style Hidden Bust Switch Make Your Clock Creates a Custom Clock for your Android Homescreen Download the Anime Angels Theme for Windows 7 CyanogenMod Updates; Rolls out Android 2.3 to the Less Fortunate

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• links for 2011-02-07

  - by Bob Rhubart

  Creating JAXWS Service in WebLogic Workshop Middleware Magic Jay SenSharma shares "a simple demo which explains how we can create a Complex JAXWS WebService using WebLogic Workshop." (tags: WebLogic jaxws middleware) Wentari: Re-Learning PeopleSoft "If I truly want to be an enterprise architect, what better way than to have hands on knowledge about all the Oracle offerings outside of my specialization in Siebel and OBIEE." -- Peter Yeung (tags: oracle otn businessintelligence obiee siebel) Andrejus Baranovskis's Blog: CreateWithParams Operation for Oracle ADF BC 11g Oracle ACE Director Andrejus Baranovski illustrates how you can apply a CreateWithParams operation in two easy steps. (tags: oracle otn oracleace soa) APEX plugins contributed to the APEX community by AMIS developers AMIS Technology blog The APEX 4.0 plugin framework "allows for more more organized, better structured development with lots more reuse potential," according to Oracle ACE Director Lucas Jellema. (tags: oracle otn oracleace apex) Oracle BI EE 11g and Oracle ADF - Part 2 - Real Time reporting using View Objects Venkatakrishnan J looks into "another reporting innovation (by use of the common ADF Framework) i.e. real time reporting using BI EE by directly reversing metadata from a transactional application. (tags: oracle otn oracleace businessintelligence obiee adf) On-demand Webcast: Java in the Smart Grid (The Java Source) Learn more about the Smart Grid and the role that Java is poised to play in this important initiative. (tags: oracle otn java smartgrid)

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• Designing generic render/graphics component in C++?

  - by s73v3r

  I'm trying to learn more about Component Entity systems. So I decided to write a Tetris clone. I'm using the "style" of component-entity system where the Entity is just a bag of Components, the Components are just data, a Node is a set of Components needed to accomplish something, and a System is a set of methods that operates on a Node. All of my components inherit from a basic IComponent interface. I'm trying to figure out how to design the Render/Graphics/Drawable Components. Originally, I was going to use SFML, and everything was going to be good. However, as this is an experimental system, I got the idea of being able to change out the render library at will. I thought that since the Rendering would be fairly componentized, this should be doable. However, I'm having problems figuring out how I would design a common Interface for the different types of Render Components. Should I be using C++ Template types? It seems that having the RenderComponent somehow return it's own mesh/sprite/whatever to the RenderSystem would be the simplest, but would be difficult to generalize. However, letting the RenderComponent just hold on to data about what it would render would make it hard to re-use this component for different renderable objects (background, falling piece, field of already fallen blocks, etc). I realize this is fairly over-engineered for a regular Tetris clone, but I'm trying to learn about component entity systems and making interchangeable components. It's just that rendering seems to be the hardest to split out for me.

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• ArchBeat Link-o-Rama for December 4, 2012

  - by Bob Rhubart

  Exalogic 2.0.1 Tea Break Snippets - Creating and using Distribution Groups | The Old Toxophilist "Although in many cases we, as Cloud Users, may not be to worried how the Virtualisation Algorithm decides where to place our vServers," says The Old Toxopholist, "there are cases where it is extremely important that vServers run on distinct physical compute nodes." There's plenty more on the subject in his blog post. Oracle Endeca (2.3) Record Level Security | Adam Seed Adam Sneed's blog post covers "the basics of security within Endeca Information Discovery, as these basic security objects are required in order to explain the implementation of record level security." ODI Handling DQ | Gurcan Orhan Oracle ACE Director Gurcan Orhan suggests you have fun with these scripts for Oracle Data Integrator. Parleys Testimonial at GlassFish Community Event - JavaOne 2012 Video of Parley's webmaster Stephan Janssen's presentation at the GlassFish Community Event at JavaOne 2012, in which he explains why Parley's moved from Tomcat to GlassFish. Java Spotlight Episode 109: Pete Muir on CDI 1.1 This edition of Roger Brinkley's Java Spotlight Podcast features an interview with CDI 1.1 spec lead Pete Muir of JBoss/Red Hat. Muir talks about the features in CDI 1.1 and what to expect in the future. Webcast: Java Management Extensions with Oracle WebLogic Server 12c Dr. Frank Munz and Dave Cabelus do the talking in this on-demand webcast focused on Oracle WebLogic Server 12c with Java Management Extensions (JMX). Using the Coherence API to get Portable Object Format bytes | Bruno Borges Bruno Borges shares a code snippet that illustrates how easy it is to use the Coherence API. Thought for the Day "Experience is something you don't get until just after you need it." — Anonymous Source: SoftwareQuotes.com

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• "Walking" along a rotating surface in LimeJS

  - by Dave Lancea

  I'm trying to have a character walk along a plank (a long, thin rectangle) that works like a seesaw, being rotated around a central point by box2d physics (falling objects). I want the left and right arrow keys to move the player up and down the plank, regardless of it's slope, and I don't want to use real physics for the player movement. My idea for achieving this was to compute the coordinate based on the rotation of the plank and the current location "up" or "down" the board. My math is derived from here: http://math.stackexchange.com/questions/143932/calculate-point-given-x-y-angle-and-distance Here's the code I have so far: movement = 0; if(keys[37]){ // Left movement = -3; } if(keys[39]){ // Right movement = 3; } // this.plank is a LimeJS sprite. // getRotation() Should return an angle in degrees var rotation = this.plank.getRotation(); // this.current_plank_location is initialized as 0 this.current_plank_location += movement; var x_difference = this.current_plank_location * Math.cos(rotation); var y_difference = this.current_plank_location * Math.sin(rotation); this.setPosition(seesaw.PLANK_CENTER_X + x_difference, seesaw.PLANK_CENTER_Y + y_difference); This code causes the player to swing around in a circle when they are out of the center of the plank given a slight change in rotation of the plank. Any ideas on how I can get the player position to follow the board position?

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• Earmarks of a Professional PHP Programmer

  - by Scotty C.

  I'm a 19 year old student who really REALLY enjoys programming, and I'm hoping to glean from your years of experience here. At present, I'm studying PHP every chance I get, and have been for about 3 years, although I've never taken any formal classes. I'd love to some day be a programmer full time, and make a good career of it. My question to you is this: What do you consider to be the earmarks or traits of a professional programmer? Mainly in the field of PHP, but other, more generalized qualifications are also more than welcome, as I think PHP is more of a hobbyist language and may not be the language of choice in the eyes of potential employers. Please correct me if I'm wrong. Above all, I don't want to wast time on something that isn't worth while. I'm currently feeling pretty confident in my knowledge of PHP as a language, and I know that I could build just about anything I need and have it "work", but I feel sorely lacking in design concepts and code structure. I can even write object oriented code, but in my personal opinion, that isn't worth a hill of beans if it isn't organized well. For this reason, I bought Matt Zandstra's book "PHP Objects, Patterns, and Practice" and have been reading that a little every day. Anyway, I'm starting to digress a little here, so back to the original question. What advice would you give to an aspiring programmer who wants to make an impact in this field? Also, on a side note, I've been working on a project with a friend of mine that would give a fairly good idea of where I'm at coding wise. I'm gonna give a link, I don't want anyone to feel as though I'm pushing or spamming here, so don't click it if you don't want to. But if you are interested on giving some feedback there as well, you can see the code on github. I'm known as The Craw there. https://github.com/PureChat/PureChat--Beta-/tree/

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