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• Using heavyweight ORM implementation for light based games

  - by Holland

  I'm just about to engulf myself in an MVC-based/Component architecture in C#, using MySQL's connector/Net for the data storage, and probably some NHibernate/FluentNHibernate Object-relational-mapping to map out the data structure. The goal is to build a scalable 2D RPG. Then I think about it...and I can't help but think this seems a little "heavy weight" for a 2D RPG, especially one which, while I plan to incorporate a lot of functionality and entertaining gameplay, may be ported to something like Windows Phone or Android in the future. Yet, on the other hand even a 2-Dimensional RPG can become very complicated, and therefore must incorporate a lot of functionality. While this can be accomplished with text/XML/JSON for data storage, is there a better way? Is something such as Object-Relational-Mapping useful in such an application? So, what do you think? Would you say that there is a place for such technologies? I don't know what to think...

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• Car-like Physics - Basic Maths to Simulate Steering

  - by Reanimation

  As my program stands I have a cube which I can control using keyboard input. I can make it move left, right, up, down, back, fourth along the axis only. I can also rotate the cube either left or right; all the translations and rotations are implemented using glm. if (keys[VK_LEFT]) //move cube along xAxis negative { globalPos.x -= moveCube; keys[VK_RIGHT] = false; } if (keys[VK_RIGHT]) //move cube along xAxis positive { globalPos.x += moveCube; keys[VK_LEFT] = false; } if (keys[VK_UP]) //move cube along yAxis positive { globalPos.y += moveCube; keys[VK_DOWN] = false; } if (keys[VK_DOWN]) //move cube along yAxis negative { globalPos.y -= moveCube; keys[VK_UP] = false; } if (FORWARD) //W - move cube along zAxis positive { globalPos.z += moveCube; BACKWARD = false; } if (BACKWARD) //S- move cube along zAxis negative { globalPos.z -= moveCube; FORWARD = false; } if (ROT_LEFT) //rotate cube left { rotX +=0.01f; ROT_LEFT = false; } if (ROT_RIGHT) //rotate cube right { rotX -=0.01f; ROT_RIGHT = false; } I render the cube using this function which handles the shader and position on screen: void renderMovingCube(){ glUseProgram(myShader.handle()); GLuint matrixLoc4MovingCube = glGetUniformLocation(myShader.handle(), "ProjectionMatrix"); glUniformMatrix4fv(matrixLoc4MovingCube, 1, GL_FALSE, &ProjectionMatrix[0][0]); glm::mat4 viewMatrixMovingCube; viewMatrixMovingCube = glm::lookAt(camOrigin,camLookingAt,camNormalXYZ); ModelViewMatrix = glm::translate(viewMatrixMovingCube,globalPos); ModelViewMatrix = glm::rotate(ModelViewMatrix,rotX, glm::vec3(0,1,0)); //manually rotate glUniformMatrix4fv(glGetUniformLocation(myShader.handle(), "ModelViewMatrix"), 1, GL_FALSE, &ModelViewMatrix[0][0]); movingCube.render(); glUseProgram(0); } The glm::lookAt function always points to the screens centre (0,0,0). The globalPos is a glm::vec3 globalPos(0,0,0); so when the program executes, renders the cube in the centre of the screens viewing matrix; the keyboard inputs above adjust the globalPos of the moving cube. The glm::rotate is the function used to rotate manually. My question is, how can I make the cube go forwards depending on what direction the cube is facing.... ie, once I've rotated the cube a few degrees using glm, the forwards direction, relative to the cube, is no longer on the z-Axis... how can I store the forwards direction and then use that to navigate forwards no matter what way it is facing? (either using vectors that can be applied to my code or some handy maths). Thanks.

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• How to impale and stack targets correctly according to the collider and its coordinate?

  - by David Dimalanta

  I'm making another simple game, a catch game, where a spawning target game object must be captured using a skewer to impale it. Here how: At the start, the falling object (in red) will fall in a vertical direction (in blue) When aimed properly, the target will fall down along the line of the skewer. (in blue) Then, another target is spawned and will fall vertically. (in red) When aimed successfully again in a streak, the second target will fall along the skewer and stacked. Same process over and over when another target is spawned. However, when I test run it on the scene tab in Unity, when impaled several targets, instead of a smooth flow and stacking it ended up overlaying it instead of stacking it up like a pancake. Here's what it look like: As I noticed when reaching the half-way of my progress, I tried to figure out how to deal with collider bodies without sticking each other so that it will actually stack like in the example of the image at no. 3. Here's the script code I added in the target game object: using UnityEngine; using System.Collections; public class ImpaleStateTest : MonoBehaviour { public GameObject target; public GameObject skewer; public bool drag = false; private float stack; private float impaleCount; void Start () { stack = 0; impaleCount = 0; } void Update () { if(drag) { target.transform.position = new Vector3 (DragTest.dir.transform.position.x, DragTest.dir.transform.position.y - 0.35f, 0); target.transform.rotation = DragTest.degrees; target.rigidbody2D.fixedAngle = true; target.rigidbody2D.isKinematic = true; target.rigidbody2D.gravityScale = 0; if(Input.GetMouseButton(0)) { Debug.Log ("Skewer: " + DragTest.dir.transform.position.x); Debug.Log ("Target: " + target.transform.position.x); } } } void OnTriggerEnter2D(Collider2D collider) { impaleCount++; Debug.Log ("Impaled " + impaleCount + " time(s)!"); drag = true; audio.Play (); } } Aside from that, I'm not sure if it's right but, the only way to stick the impaled targets while dragging the skewer left or right is to get the X coordinates from the skewer only. Is there something else to recommend it in order to improve this behavior as realistic as possible? Please help.

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• How to stop a tap event from propagating in a XNA / Silverlight game

  - by Mech0z

  I have a game with Silverlight / XNA game where text and buttons are created in Silverlight while 3d is done in XNA. The Silverlight controls are drawn ontop of the 3D and I dont want a click on a button to interact with the 3D underneath So I have private void ButtonPlaceBrick_Tap(object sender, GestureEventArgs e) { e.Handled = true; But my gesture handling on the 3d objects still runs even though I have set handled to true. private void OnUpdate(object sender, GameTimerEventArgs e) { while (TouchPanel.IsGestureAvailable) { // Read the next gesture GestureSample gesture = TouchPanel.ReadGesture(); switch (gesture.GestureType) How am I supposed to stop it from propagating?

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• (Libgdx) Move Vector2 along angle?

  - by gemurdock

  I have seen several answers on here about moving along angle, but I can't seem to get this to work properly for me and I am new to LibGDX... just trying to learn. These are my Vector2's that I am using for this function. public Vector2 position = new Vector2(); public Vector2 velocity = new Vector2(); public Vector2 movement = new Vector2(); public Vector2 direction = new Vector2(); Here is the function that I use to move the position vector along an angle. setLocation() just sets the new location of the image. public void move(float delta, float degrees) { position.set(image.getX() + image.getWidth() / 2, image.getY() + image.getHeight() / 2); direction.set((float) Math.cos(degrees), (float) Math.sin(degrees)).nor(); velocity.set(direction).scl(speed); movement.set(velocity).scl(delta); position.add(movement); setLocation(position.x, position.y); // Sets location of image } I get a lot of different angles with this, just not the correct angles. How should I change this function to move a Vector2 along an angle using the Vector2 class from com.badlogic.gdx.math.Vector2 within the LibGDX library? I found this answer, but not sure how to implement it. Update: I figured out part of the issue. Should convert degrees to radians. However, the angle of 0 degrees is towards the right. Is there any way to fix this? As I shouldn't have to add 90 to degrees in order to have correct heading. New code is below public void move(float delta, float degrees) { degrees += 90; // Set degrees to correct heading, shouldn't have to do this position.set(image.getX() + image.getWidth() / 2, image.getY() + image.getHeight() / 2); direction.set(MathUtils.cos(degrees * MathUtils.degreesToRadians), MathUtils.sin(degrees * MathUtils.degreesToRadians)).nor(); velocity.set(direction).scl(speed); movement.set(velocity).scl(delta); position.add(movement); setLocation(position.x, position.y); }

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• Abstract class + Inheritance vs Interface

  - by RealityDysfunction

  Hello fellow programmers, I am reading a book on C# and the author is comparing Abstract classes and Interfaces. He claims that if you have the following "abstract class:" abstract class CloneableType { public abstract object Clone(); } Then you cannot do this: public class MiniVan : Car, CloneableType {} This, I understand. However he claims that because of this inability to do multiple inheritance that you should use an interface for CloneableType, like so: public interface ICloneable { object Clone(); } My question is, isn't this somewhat misleading, because you can create an abstract class which is "above" class Car with the method Clone, then have Car inherit that class and then Minivan will inherit Car with all these methods, CloneAble class - Car class - Minivan Class. What do you think? Thanks.

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• Subterranean IL: Exception handler semantics

  - by Simon Cooper

  In my blog posts on fault and filter exception handlers, I said that the same behaviour could be replicated using normal catch blocks. Well, that isn't entirely true... Changing the handler semantics Consider the following: .try { .try { .try { newobj instance void [mscorlib]System.Exception::.ctor() // IL for: // e.Data.Add("DictKey", true) throw } fault { ldstr "1: Fault handler" call void [mscorlib]System.Console::WriteLine(string) endfault } } filter { ldstr "2a: Filter logic" call void [mscorlib]System.Console::WriteLine(string) // IL for: // (bool)((Exception)e).Data["DictKey"] endfilter }{ ldstr "2b: Filter handler" call void [mscorlib]System.Console::WriteLine(string) leave.s Return } } catch object { ldstr "3: Catch handler" call void [mscorlib]System.Console::WriteLine(string) leave.s Return } Return: // rest of method If the filter handler is engaged (true is inserted into the exception dictionary) then the filter handler gets engaged, and the following gets printed to the console: 2a: Filter logic 1: Fault handler 2b: Filter handler and if the filter handler isn't engaged, then the following is printed: 2a:Filter logic 1: Fault handler 3: Catch handler Filter handler execution The filter handler is executed first. Hmm, ok. Well, what happens if we replaced the fault block with the C# equivalent (with the exception dictionary value set to false)? .try { // throw exception } catch object { ldstr "1: Fault handler" call void [mscorlib]System.Console::WriteLine(string) rethrow } we get this: 1: Fault handler 2a: Filter logic 3: Catch handler The fault handler is executed first, instead of the filter block. Eh? This change in behaviour is due to the way the CLR searches for exception handlers. When an exception is thrown, the CLR stops execution of the thread, and searches up the stack for an exception handler that can handle the exception and stop it propagating further - catch or filter handlers. It checks the type clause of catch clauses, and executes the code in filter blocks to see if the filter can handle the exception. When the CLR finds a valid handler, it saves the handler's location, then goes back to where the exception was thrown and executes fault and finally blocks between there and the handler location, discarding stack frames in the process, until it reaches the handler. So? By replacing a fault with a catch, we have changed the semantics of when the filter code is executed; by using a rethrow instruction, we've split up the exception handler search into two - one search to find the first catch, then a second when the rethrow instruction is encountered. This is only really obvious when mixing C# exception handlers with fault or filter handlers, so this doesn't affect code written only in C#. However it could cause some subtle and hard-to-debug effects with object initialization and ordering when using and calling code written in a language that can compile fault and filter handlers.

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• XAML2CPP 1.0.1.0

  - by Valter Minute

  I upgraded XAML2CPP to fix some bugs and support some new features that will be used in my next tutorial step (that I hope to publish very soon!). Bug fixed: the listbox selection changed event was generated with an incorrect prototype events generated by the XAML tree root element (UserControl) were not handled. New features: XAML2CPP generates panels (dynamically generated XAML subtrees that may be added to a page) and user controls (those will be the object of my next post, stay tuned!). XAML2CPPXRValue class has been added to XAML2CPPbase.h. This class will allow single-line declaration of XRValue objects (I’m lazy!) and destroys automatically objects and string XRValues when the object itself is destroyed. You can download the latest XAML2CPP release here: http://cid-9b7b0aefe3514dc5.skydrive.live.com/self.aspx/.Public/XAML2CPP.zip

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• Do immutable objects and DDD go together?

  - by SnOrfus

  Consider a system that uses DDD (as well: any system that uses an ORM). The point of any system realistically, in nearly every use case, will be to manipulate those domain objects. Otherwise there's no real effect or purpose. Modifying an immutable object will cause it to generate a new record after the object is persisted which creates massive bloat in the datasource (unless you delete previous records after modifications). I can see the benefit of using immutable objects, but in this sense, I can't ever see a useful case for using immutable objects. Is this wrong?

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• Pythonika installation error on ubuntu 12

  - by user1426913

  I have been following links: to install pythonika on ubuntu: How to install Pythonika on Ubuntu? I get error: $ sudo make -f Makefile.linux cc -c Pythonika.c -I/usr/local/Wolfram/Mathematica/9.0/SystemFiles/Links/MathLink/DeveloperKit/Linux/CompilerAdditions -I/usr/include/python2.7/ Pythonika.c: In function ‘PyUnicodeString’: Pythonika.c:109:5: warning: passing argument 1 of ‘PyUnicodeUCS4_FromUnicode’ from incompatible pointer type [enabled by default] /usr/include/python2.7/unicodeobject.h:464:23: note: expected ‘const Py_UNICODE *’ but argument is of type ‘short unsigned int *’ Pythonika.c: In function ‘python_to_mathematica_object’: Pythonika.c:411:13: warning: passing argument 2 of ‘MLPutUnicodeString’ from incompatible pointer type [enabled by default] /usr/local/Wolfram/Mathematica/9.0/SystemFiles/Links/MathLink/DeveloperKit/Linux/CompilerAdditions/mathlink.h:4299:1: note: expected ‘const short unsigned int *’ but argument is of type ‘Py_UNICODE ’ "/usr/local/Wolfram/Mathematica/9.0/SystemFiles/Links/MathLink/DeveloperKit/Linux/CompilerAdditions/mprep" Pythonika.tm -o Pythonikatm.c /bin/sh: 1: /usr/local/Wolfram/Mathematica/9.0/SystemFiles/Links/MathLink/DeveloperKit/Linux/CompilerAdditions/mprep: not found make: ** [Pythonikatm.o] Error 127

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• fsockopen() error : Network is unreachable port 43 in php [closed]

  - by hamid

  i've writed some Php code that lookup for domain (whois) but it fails !! this is some of my code : function checkdomain($server,$domain){ global $response; $connection = fsockopen($server,43); fputs($connection, "domain " . $domain . "\r\n"); while(!feof($connection)){ $response .= fgets($connection, 4096); } fclose($connection); } checkdomain("whois.crsnic.net","www.example.com"); the code work on my localhost ( apache,php,mysql, OS - Win XP ) but when i uploaded it to my host (Linux) it failed. and i always see the Below Error/message : Warning: fsockopen() [function.fsockopen]: unable to connect to whois.crsnic.net:43 (Network is unreachable) in /home/hamid0011/public_html/whois/whois.php on line 37 what should i do ? is this my host's problem or whois server ( but it work in localhost ) or my code ? TNX

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• Why prefer a wildcard to a type discriminator in a Java API (Re: Effective Java)

  - by Michael Campbell

  In the generics section of Bloch's Effective Java (which handily is the "free" chapter available to all: http://java.sun.com/docs/books/effective/generics.pdf), he says: If a type parameter appears only once in a method declaration, replace it with a wildcard. (See page 31-33 of that pdf) The signature in question is: public static void swap(List<?> list, int i, int j) vs public static void swap(List<E> list, int i, int j) And then proceeds to use a static private "helper" function with an actual type parameter to perform the work. The helper function signature is EXACTLY that of the second option. Why is the wildcard preferable, since you need to NOT use a wildcard to get the work done anyway? I understand that in this case since he's modifying the List and you can't add to a collection with an unbounded wildcard, so why use it at all?

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• CodePlex Daily Summary for Friday, October 21, 2011

  CodePlex Daily Summary for Friday, October 21, 2011Popular ReleasesCodekicker.BBCode: CodeKicker.BBCode-Parser-5.0: This is the best and newest version.Self-Tracking Entity Generator for WPF and Silverlight: Self-Tracking Entity Generator v 0.9.9: Self-Tracking Entity Generator v 0.9.9 for Entity Framework 4.0Umbraco CMS: Umbraco 5.0 CMS Alpha 3: Umbraco 5 Alpha 3Umbraco 5 (aka Jupiter) will be the next version of everyone's favourite, friendly ASP.NET CMS that already powers over 100,000 websites worldwide. Try out the Alpha of v5 today! If you're new to Umbraco and would like to get a low-down on our popular and easy-to-learn approach to content management, check out our intro video. What's Alpha 3?This is our third Alpha release. It's intended for developers looking to become familiar with the codebase & architecture, or for thos...thinktecture IdentityServer: IdentityServer RC: This is the RC of Thinktecture.IdentityServerWebForms.ControlExtender: WebForms.ControlExtender 1.0.0.0 (binary): Initial release.Windows Phone 7 Skydrive Library: Skydrive WP7 rel. 1: Till the Rest Api gets out of beta you can use this release You can: - browse the folders -download files It uses WebDAVVkontakte WP: Vkontakte: source codeDotNet.Framework.Common: DotNetFramework.Common?????: DotNetFramework.Common?????Way2Sms Applications for Android, Desktop/Laptop & Java enabled phones: Way2SMS Desktop App v2.0: 1. Fixed issue with sending messages due to changes to Way2Sms site 2. Updated the character limit to 160 from 140GART - Geo Augmented Reality Toolkit: 1.0.1: About Release 1.0.1 Release 1.0.1 is a service release that addresses several issues and improves performance. As always, check the Documentation tab for instructions on how to get started. If you don't have the Windows Phone SDK yet, grab it here. Breaking Change Please note: There is a breaking change in this release. As noted below, the WorldCalculationMode property of ARItem has been replaced by a user-definable function. ARItem is now automatically wired up with a function that perform...Microsoft Ajax Minifier: Microsoft Ajax Minifier 4.32: Fix for issue #16710 - string literals in "constant literal operations" which contain ASP.NET substitutions should not be considered "constant." Move the JS1284 error (Misplaced Function Declaration) so it only fires when in strict mode. I got a couple complaints that people didn't like that error popping up in their existing code when they could verify that the location of that function, although not strict JS, still functions as expected cross-browser.Naked Objects: Naked Objects Release 4.0.110.0: Corresponds to the packaged version 4.0.110.0 available via NuGet. Please note that the easiest way to install and run the Naked Objects Framework is via the NuGet package manager: just search the Official NuGet Package Source for 'nakedobjects'. It is only necessary to download the source code (from here) if you wish to modify or re-build the framework yourself. If you do wish to re-build the framework, consul the file HowToBuild.txt in the release. Documentation Please note that after ...myCollections: Version 1.5: New in this version : Added edit type for selected elements Added clean for selected elements Added Amazon Italia Added Amazon China Added TVDB Italia Added TVDB China Added Turkish language You can now manually add artist Added Order by Rating Improved Add by Media Improved Artist Detail Upgrade Sqlite engine View, Zoom, Grouping, Filter are now saved by category Added group by Artist Added CubeCover View BugFixingFacebook C# SDK: 5.3: This is a BETA release which adds new features and bug fixes to v5.2.1. removed dependency from Code Contracts enabled Task Parallel Support in .NET 4.0+ added support for early preview for .NET 4.5 added additional method overloads for .NET 4.5 to support IProgress<T> for upload progress added new CS-WinForms-AsyncAwait.sln sample demonstrating the use of async/await, upload progress report using IProgress<T> and cancellation support Query/QueryAsync methods uses graph api instead...IronPython: 2.7.1 RC: This is the first release candidate of IronPython 2.7.1. Like IronPython 54498, this release requires .NET 4 or Silverlight 4. This release will replace any existing IronPython installation. If there are no showstopping issues, this will be the only release candidate for 2.7.1, so please speak up if you run into any roadblocks. The highlights of 2.7.1 are: Updated the standard library to match CPython 2.7.2. Add the ast, csv, and unicodedata modules. Fixed several bugs. IronPython To...Rawr: Rawr 4.2.6: This is the Downloadable WPF version of Rawr!For web-based version see http://elitistjerks.com/rawr.php You can find the version notes at: http://rawr.codeplex.com/wikipage?title=VersionNotes Rawr AddonWe now have a Rawr Official Addon for in-game exporting and importing of character data hosted on Curse. The Addon does not perform calculations like Rawr, it simply shows your exported Rawr data in wow tooltips and lets you export your character to Rawr (including bag and bank items) like Char...Home Access Plus+: v7.5: Change Log: New Booking System (out of Beta) New Help Desk (out of Beta) New My Files (Developer Preview) Token now saved into Cookie so the system doesn't TIMEOUT as much File Changes: ~/bin/hap.ad.dll ~/bin/hap.web.dll ~/bin/hap.data.dll ~/bin/hap.web.configuration.dll ~/bookingsystem/admin/default.aspx ~/bookingsystem/default.aspx REMOVED ~/bookingsystem/bookingpopup.ascx REMOVED ~/bookingsystem/daylist.ascx REMOVED ~/bookingsystem/new.aspx ~/helpdesk/default.aspx ...Visual Micro - Arduino for Visual Studio: Arduino for Visual Studio 2008 and 2010: Arduino for Visual Studio 2010 has been extended to support Visual Studio 2008. The same functionality and configuration exists between the two versions. The 2010 addin runs .NET4 and the 2008 addin runs .NET3.5, both are installed using a single msi and both share the same configuration settings. The only known issue in 2008 is that the button and menu icons are missing. Please logon to the visual micro forum and let us know if things are working or not. Read more about this Visual Studio ...DotSpatial: Release: Moved IExtension to a separate assembly.Phalanger - The PHP Language Compiler for the .NET Framework: 2.1 (October 2011) for .NET 4.0: October 2011 release of Phalanger - the PHP compiler for .NET 4.0 - introduces following: Performance enhancements several duplicitous runtime checks omitted New functionality 31586 __toString() magic method compile time check hash_update_stream() supports second argument Issue fixes 31455 PCRE named groups addcslashes() with second argument fix 31577 31575, 31567 31566 31484 Note if you need Phalanger running on .NET 2.0, please use Phalanger 2.0. For the full list of cha...New Projects#foo SqlServer: Useful Sql Server extensionsBaufQuery: Material de la presentación que voy a realizar en Baufest sobre jQueryBoringColorPicker: A simple color picker i created on a busy Saturday morning, and i couldn't stress myself calculating color codes. I hope someone finds it useful. Developed in c#, for desktop use.Charity Social Network1: ????? ??? ?????? ??? ?????2 devianARTGallery: <devianART Gallery> makes it easier for <artist, graphic designer, art, web designer, interface design> to<following news images, graphics, vectors and new resouces for your needs at this application in your hands>. It's developing in<C# windows phone 7>Diving: MVC Application for testingDotNet.Framework.Common: .NET ??????????Drama-AddictFeed: Retrieve feed a top siteDuckWorld: Logica architect courseEasy Monitor: ??ASP.NET_MVC4???????????????，????。 Server, Monitoring, ASP.net, mvc, mvc4, svg, vml, KVDB, WebsiteEvent_Manager: Event Manager V 2FETCH! Go Fetch that remote task. Good task doogie!: Email sent, task accomplished. This little task execution agent can be a remote domain support's best friend. Save time on late night and off hours administration tasks. When there is no time to RDP, send Fetch an email and he'll take care of it quick. Secure, reliable. InQuestaRed UTN: Proyecto de UTNInsert from Windows Live Image Search: Allows you to do an image search using Windows Live Search and put the resulting image into a blog entry.ioak: iOakLibertyJournal free diary journal software: LibertyJournal - A freeware personal diary software/journal software/program, could become your personal digital diary and journal software to record your daily events and memories, in your creative words. Runs on Desktop PCs, and Netbooks too.memcachedext - .NET library: A .NET library providing support for advanced caching scenarios, including memcached server.myWebfetion: my web fetionNuMetaheuristics: NuMetaheuristics is a general framework for optimization developed in C#. It is capable of supporting any optimization paradigm (local search, naturally inspired, multi-objective, etc.). It supports extensions to allow for new genotypes, operators, and algorithms.Oil Prices: Application about Thailand's oil pricesOnline Ontology Editor: Online Ontology BuilderOrchard Documentation: Orchard Documentation repository.QuipuxConnector: QuipuxConnector es el primer Addins para word que permite enviar documentos a QuipuxSignature Recognition: An application that authenticates scanned signature images.SmartFramework: SmartFramework là n?n t?ng xây d?ng các h? th?ng l?n connect t?i các ngu?n CSDL khác nhau, d?c bi?t là các h? th?ng online, real-time.smartKin: Studienarbeit TIT 09 - Kinect / Robotik Zum räumlichen Sehen von Robotern mit Kinect: Initiale Experimente für 3D-Szenen Rekonstruktion, Steuerung durch natürliche GestenTAudioPlayer: TAudioPlayer would take more facility in your aural comprehension exercise. It most conspicuous function is comfortably add time-tags to an audio file which is playing and you can jump to the position you defined easily. It also provides various hotkey setting and you can define most of the operation hotkey by yourself. The project is developed in C# with Visual Studio 2010.Watin - TestEasy: WatiN - TestEasy is the idea to make WatiN based test generation and excution easier. Mainly it will provide interface to data driven automation using WatiN.WebForms.ControlExtender: WebForms.ControlExtender simplify the creation of components which extend (or adds) their own properties to other controls or components in the Visual Studio ASP.NET designer.Windows Phone 7 Skydrive Library: Use this library if you need to access Skydrive from Windows PhonezDBA: SQL Server 2008 tookit!

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• Dynamic Filtering

  - by Ricardo Peres

  Continuing my previous posts on dynamic LINQ, now it's time for dynamic filtering. For now, I'll focus on string matching. There are three standard operators for string matching, which both NHibernate, Entity Framework and LINQ to SQL recognize: Equals Contains StartsWith EndsWith So, if we want to apply filtering by one of these operators on a string property, we can use this code: public enum MatchType { StartsWith = 0, EndsWith = 1, Contains = 2, Equals = 3 } public static List Filter(IEnumerable enumerable, String propertyName, String filter, MatchType matchType) { return (Filter(enumerable, typeof(T), propertyName, filter, matchType) as List); } public static IList Filter(IEnumerable enumerable, Type elementType, String propertyName, String filter, MatchType matchType) { MethodInfo asQueryableMethod = typeof(Queryable).GetMethods(BindingFlags.Static | BindingFlags.Public).Where(m = (m.Name == "AsQueryable") && (m.ContainsGenericParameters == false)).Single(); IQueryable query = (enumerable is IQueryable) ? (enumerable as IQueryable) : asQueryableMethod.Invoke(null, new Object [] { enumerable }) as IQueryable; MethodInfo whereMethod = typeof(Queryable).GetMethods(BindingFlags.Public | BindingFlags.Static).Where(m = m.Name == "Where").ToArray() [ 0 ].MakeGenericMethod(elementType); MethodInfo matchMethod = typeof(String).GetMethod ( (matchType == MatchType.StartsWith) ? "StartsWith" : (matchType == MatchType.EndsWith) ? "EndsWith" : (matchType == MatchType.Contains) ? "Contains" : "Equals", new Type [] { typeof(String) } ); PropertyInfo displayProperty = elementType.GetProperty(propertyName, BindingFlags.Public | BindingFlags.Instance); MemberExpression member = Expression.MakeMemberAccess(Expression.Parameter(elementType, "n"), displayProperty); MethodCallExpression call = Expression.Call(member, matchMethod, Expression.Constant(filter)); LambdaExpression where = Expression.Lambda(call, member.Expression as ParameterExpression); query = whereMethod.Invoke(null, new Object [] { query, where }) as IQueryable; MethodInfo toListMethod = typeof(Enumerable).GetMethod("ToList", BindingFlags.Static | BindingFlags.Public).MakeGenericMethod(elementType); IList list = toListMethod.Invoke(null, new Object [] { query }) as IList; return (list); } var list = new [] { new { A = "aa" }, new { A = "aabb" }, new { A = "ccaa" }, new { A = "ddaadd" } }; var contains = Filter(list, "A", "aa", MatchType.Contains); var endsWith = Filter(list, "A", "aa", MatchType.EndsWith); var startsWith = Filter(list, "A", "aa", MatchType.StartsWith); var equals = Filter(list, "A", "aa", MatchType.Equals); Perhaps I'll write some more posts on this subject in the near future. SyntaxHighlighter.config.clipboardSwf = 'http://alexgorbatchev.com/pub/sh/2.0.320/scripts/clipboard.swf'; SyntaxHighlighter.brushes.CSharp.aliases = ['c#', 'c-sharp', 'csharp']; SyntaxHighlighter.all();

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• Camera lookAt target changes when rotating parent node

  - by Michael IV

  have the following issue.I have a camera with lookAt method which works fine.I have a parent node to which I parent the camera.If I rotate the parent node while keeping the camera lookAt the target , the camera lookAt changes too.That is nor what I want to achieve.I need it to work like in Adobe AE when you parent camera to a null object:when null object is rotated the camera starts orbiting around the target while still looking at the target.What I do currently is multiplying parent's model matrix with camera model matrix which is calculated from lookAt() method.I am sure I need to decompose (or recompose ) one of the matrices before multiplying them .Parent model or camera model ? Anyone here can show the right way doing it ? UPDATE: The parent is just a node .The child is the camera.The parented camera in AfterEffects works like this: If you rotate the parent node while camera looks at the target , the camera actually starts orbiting around the target based on the parent rotation.In my case the parent rotation changes also Camera's lookAt direction which IS NOT what I want.Hope now it is clear .

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• How to update coffee script?

  - by Tetsu

  I got a following error when I tried to watch coffee scripts by coffee -o js -cw coffee. /usr/local/lib/node_modules/coffee-script/lib/coffee-script/command.js:321 throw e; ^ Error: watch Unknown system errno 28 at errnoException (fs.js:636:11) at FSWatcher.start (fs.js:663:11) at Object.watch (fs.js:691:11) at /usr/local/lib/node_modules/coffee-script/lib/coffee-script/command.js:287:27 at Object.oncomplete (/usr/local/lib/node_modules/coffee-script/lib/coffee-script/command.js:100:11) I have no idea what is going with error. Then I checked the versions, coffee -v is 1.6.1 and node -v is v0.6.12. According the official site( http://coffeescript.org/ ) the latest version is 1.6.3, so I wanted update coffee by npm update -g coffee-script, but this fails also. npm WARN [email protected] package.json: bugs['name'] should probably be bugs['url'] npm http GET https://registry.npmjs.org/coffee-script npm http 304 https://registry.npmjs.org/coffee-script How can I update coffee script? Edit 2013/10/11 In my coffee script directory there is only one file box_wrapper.coffee. $ -> $("body").children().wrap -> "<div id='#{$(@).attr "id"}_box' class='wrapper'/>" Edit 2013/10/16 I tried to re-install coffee, so I've done like this. $ sudo npm -g rm coffee npm WARN Not installed in /usr/local/lib/node_modules coffee $ coffee -v CoffeeScript version 1.6.1 I can't remove coffee. And I tried also like this. $ sudo apt-get remove npm $ npm -v -bash: /usr/bin/npm: No such file or directory $ sudo apt-get install npm $ npm -v 1.1.4 $ sudo npm -g install coffee # I omit a lot of `GET` parts. npm http 304 https://registry.npmjs.org/mkdirp/0.3.4 npm ERR! error installing [email protected] npm http 304 https://registry.npmjs.org/assertion-error/1.0.0 npm http 304 https://registry.npmjs.org/growl npm http 304 https://registry.npmjs.org/jade/0.26.3 npm http 304 https://registry.npmjs.org/diff/1.0.2 npm http 304 https://registry.npmjs.org/mkdirp/0.3.5 npm http 304 https://registry.npmjs.org/glob/3.2.1 npm http 304 https://registry.npmjs.org/ms/0.3.0 npm ERR! error rolling back [email protected] Error: UNKNOWN, unknown error '/usr/local/lib/node_modules/coffee/node_modules/express' npm ERR! error installing [email protected] npm ERR! EEXIST, file already exists '/usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules' npm ERR! File exists: /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules npm ERR! Move it away, and try again. npm ERR! npm ERR! System Linux 3.2.0-54-generic-pae npm ERR! command "node" "/usr/bin/npm" "-g" "install" "coffee" npm ERR! cwd /home/ironsand npm ERR! node -v v0.6.12 npm ERR! npm -v 1.1.4 npm ERR! path /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules npm ERR! fstream_path /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules/___debug.npm npm ERR! fstream_type Directory npm ERR! fstream_class DirWriter npm ERR! code EEXIST npm ERR! message EEXIST, file already exists '/usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules' npm ERR! errno {} npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:161:23 npm ERR! fstream_stack Object.oncomplete (/usr/lib/nodejs/mkdirp.js:34:53) npm ERR! EEXIST, file already exists '/usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules' npm ERR! File exists: /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules npm ERR! Move it away, and try again. npm ERR! npm ERR! System Linux 3.2.0-54-generic-pae npm ERR! command "node" "/usr/bin/npm" "-g" "install" "coffee" npm ERR! cwd /home/ironsand npm ERR! node -v v0.6.12 npm ERR! npm -v 1.1.4 npm ERR! path /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules npm ERR! fstream_path /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules/___debug.npm npm ERR! fstream_type Directory npm ERR! fstream_class DirWriter npm ERR! code EEXIST npm ERR! message EEXIST, file already exists '/usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules' npm ERR! errno {} npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:161:23 npm ERR! fstream_stack Object.oncomplete (/usr/lib/nodejs/mkdirp.js:34:53) npm ERR! npm ERR! Additional logging details can be found in: npm ERR! /home/ironsand/npm-debug.log npm not ok And npm-debug.log is a blank file.

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• Unit-Testing functions which have parameters of classes where source code is not accessible

  - by McMannus

  Relating to this question, I have another question regarding unit testing functions in the utility classes: Assume you have function signatures like this: public function void doSomething(InternalClass obj, InternalElement element) where InternalClass and InternalElement are both Classes which source code are not available, because they are hidden in the API. Additionally, doSomething only operates on obj and element. I thought about mocking those classes away but this option is not possible due to the fact that they do not implement an interface at all which I could use for my Mocking classes. However, I need to fill obj with defined data to test doSomething. How can this problem be solved?

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• SQL Server PowerShell Provider And PowerShell Version 2 Get-Command Issue

  - by BuckWoody

  The other day I blogged that the version of the SQL Server PowerShell provider (sqlps) follows the version of PowerShell. That’s all goodness, but it has appeared to cause an issue for PowerShell 2.0. the Get-Command PowerShell command-let returns an error (Object reference not set to an instance of an object) if you are using PowerShell 2.0 and sqlps – it’s a known bug, and I’m happy to report that it is fixed in SP2 for SQL Server 2008 – something that will released soon. You can read more about this issue here: http://connect.microsoft.com/SQLServer/feedback/details/484732/sqlps-and-powershell-v2-issues Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• Thinkpad x201 Tablet - Touch doesn't work correctly under 12.04

  - by Joachim

  running 12.04 on my Thinkpad X201t. On the login screen the touch works fine, the mouse cursor appears where I touch the screen. After I logged in, it doesn't work anymore. If I touch the display, the cursor stays on the point where it was before, it doesn't jump to the touchpoint. I can move it, yes, but its chaotic. With the pen it works fine, but without the touch-function it's not enought for real tablet usage. So, would be glad if touch-function can be fixed. I'm very new to Linux/Ubuntu, so don't know where I can start. Haven't found anything in the system settings & Compiz so far, also no luck in google etc. Would be glad for help ;-). Of course I could go back to 11.04... but I would prefer to stay with the new system. Best, Joachim

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• How to display values from another website to an new html page?

  - by user3098728

  How to display the value in a new html file from different website? This an example field of values that need to display into new html file and I want to display the said values in the input box (Contract ID) of this page JSFiddle. I have 2 JS code that would display that values, but unfortunately its not working and I dont know how to display that value in html input box. Please help me. Thank you I want to display the said value in this input box: Here the JS file to read the values: function scanLapVerification() { try { var page_title = "Title"; var el = getElement(document, "class", "view-operator-verification-title", ""); if (!el || el.length == 0) return; if (el[0].innerText != page_title) return; var page_title = ''; var el = getElement(document, "class", "workflowActivityDetailPanel", ""); if (el && el.length > 0) { var eltr = getElement(el[0], "tag", "tr", ""); if (eltr && eltr.length > 0) { //Read Contract ID var contractId = { CI: { id: null } }; var con_id = null; for (var i = 0; i < eltr.length; i++) { tr_text = eltr[i].innerText; if (tr_text.substr(0, "Contract ID".length) == "Contract ID") con_id = "CI"; if (con_id && tr_text.substr(0, "Contract ID".length) == "Contract ID") { contractId[con_id].id = tr_text.substr("Contract ID".length + 1, tr_text.length - "Contract ID".length - 1); } } var contract_id = contractId.CI.id; return { content: "cid_check", con_id: con_id }; } return { status: "KO" }; } catch (e) { alert("Exception: scanLapVerification\n" + e.Description); return { status: "KO", message: e }; } }; And here's the 2nd JS that display to a new html page: function scanLapVerification() { chrome.tabs.sendRequest(tabLapVerification, { method: "scanLapVerification" }, function (response) { msgbox("receiveResponse: scanLapVerification " + jsonToString(response, "JSON")); //maintaining state in the background if (response.data.content == "cid_check") { //Popup window features var popupWindow = null; var name; var width = 550; var height = 200; var left = parseInt((screen.availWidth / 2) - (width / 2)); var top = parseInt((screen.availHeight / 2) - (height / 2)); var windowFeatures = "width=" + width + ",height=" + height + ",left=" + left + ",top=" + top + "screenX=" + left + ",screenY=" + top; //Input new address with popup window if (confirm("Does the client has new address?") == true) { popupWindow = window.open('/htmlname.htm', "title", windowFeatures + encodeURIComponent(response.data.contract_id)); popupWindow.focus(); } else { name = ""; } }); }

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• Box2D Platform body not moving player body along with it

  - by onedayitwillmake

  I am creating a game using Box2D (Javascript implementation) - and I added the ability to have a static platform, that is moved along an axis as a function of a sine. My problem is when the player lands on the platform, as the platform moves along the X axis - the player is not moved along with it, as you visually would expect. The player can land on the object, and if it hits the side of the object, it does colide with it and is pushed. This image might explain better than I did: After jumping on to the red platform the player character will fall off as the platform moves to the right UPDATE: Here is a live demo showing the problem: http://onedayitwillmake.com/ChuClone/slideexample.php

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• Storing lots of large strings with frequent "appends" and few reads

  - by Thiago Moraes

  In my current project, I need to store a very long ASCII string to each instance of a given object. This string will receive an 2 appends per minute and will not be retrieved so frequently. The worst case scenario is a 5-10MB string. I'll have thousands of instances of my object and I'm worried that storing all those strings in the filesystem would not be optimal, but I can't think of a better solution. Can anyone suggest an alternative? Maybe a key-value store? In this case, which one? Any other thoughts?

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• Introducing jLight &ndash; Talking to the DOM using Silverlight and jQuery.

  - by Timmy Kokke

  Introduction With the recent news about Silverlight on the Windows Phone and all the great Out-Of-Browser features in the upcoming Silverlight 4 you almost forget Silverlight is a browser plugin. It most often runs in a web browser and often as a control. In many cases you need to communicate with the browser to get information about textboxes, events or details about the browser itself. To do this you can use JavaScript from Silverlight. Although Silverlight works the same on every browser, JavaScript does not and it won’t be long before problems arise. To overcome differences in browser I like to use jQuery. The only downside of doing this is that there’s a lot more code needed that you would normally use when you write jQuery in JavaScript. Lately, I had to catch changes is the browser scrollbar and act to the new position. I also had to move the scrollbar when the user dragged around in the Silverlight application. With jQuery it was peanuts to get and set the right attributes, but I found that I had to write a lot of code on Silverlight side.  With a few refactoring I had a separated out the plumbing into a new class and could call only a few methods on that to get the same thing done. The idea for jLight was born. jLight vs. jQuery The main purpose of jLight is to take the ease of use of jQuery and bring it into Silverlight for handling DOM interaction. For example, to change the text color of a DIV to red, in jQuery you would write: jQuery("div").css("color","red"); In jLight the same thing looks like so: jQuery.Select("div").Css("color","red");   Another example. To change the offset in of the last SPAN you could write this in jQuery : jQuery("span:last").offset({left : 10, top : 100});   In jLight this would do the same: jQuery.Select("span:last").Offset(new {left = 10, top = 100 });   Callbacks Nothing too special so far. To get the same thing done using the “normal” HtmlPage.Window.Eval, it wouldn’t require too much effort. But to wire up a handler for events from the browser it’s a whole different story. Normally you need to register ScriptMembers, ScriptableTypes or write some code in JavaScript. jLight takes care of the plumbing and provide you with an simple interface in the same way jQuery would. If you would like to handle the scroll event of the BODY of your html page, you’ll have to bind the event using jQuery and have a function call back to a registered function in Silverlight. In the example below I assume there’s a method “SomeMethod” and it is registered as a ScriptableObject as “RegisteredFromSilverlight” from Silverlight.   jQuery("body:first").scroll(function() { var sl = document.getElementbyId("SilverlightControl"); sl.content.RegisteredFromSilverlight.SomeMethod($(this)); });       Using jLight  in Silverlight the code would be even simpler. The registration of RegisteredFromSilverlight  as ScriptableObject can be omitted.  Besides that, you don’t have to write any JavaScript or evaluate strings with JavaScript.   jQuery.Select("body:first").scroll(SomeMethod);   Lambdas Using a lambda in Silverlight can make it even simpler.  Each is the jQuery equivalent of foreach in C#. It calls a function for every element found by jQuery. In this example all INPUT elements of the text type are selected. The FromObject method is used to create a jQueryObject from an object containing a ScriptObject. The Val method from jQuery is used to get the value of the INPUT elements.   jQuery.Select("input:text").Each((element, index) => { textBox1.Text += jQueryObject.FromObject(element).Val(); return null; });   Ajax One thing jQuery is often used for is making Ajax calls. Making calls to services to external services can be done from Silverlight, but as easy as using jQuery. As an example I would like to show how jLight does this. Below is the entire code behind. It searches my name on twitter and shows the result. This example can be found in the source of the project. The GetJson method passes a Silverlight JsonValue to a callback. This callback instantiates Twit objects and adds them to a ListBox called TwitList.   public partial class DemoPage2 : UserControl { public DemoPage2() { InitializeComponent(); jQuery.Load(); }   private void CallButton_Click(object sender, RoutedEventArgs e) { jQuery.GetJson("http://search.twitter.com/search.json?lang=en&q=sorskoot", Done); }   private void Done(JsonValue arg) { var tweets = new List<Twit>(); foreach (JsonObject result in arg["results"]) { tweets.Add(new Twit() { Text = (string)result["text"], Image = (string)result["profile_image_url"], User = (string)result["from_user"] } ); } TwitList.ItemsSource = tweets; } }   public class Twit { public string User { get; set; } public string Image { get; set; } public string Text { get; set; } }   Conclusion Although jLight is still in development it can be used already.There isn’t much documentation yet, but if you know jQuery jLight isn’t very hard to use.  If you would like to try it, please let me know what you think and report any problems you run in to. jLight can be found at:   http://jlight.codeplex.com

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• Unit testing in Django

  - by acjohnson55

  I'm really struggling to write effective unit tests for a large Django project. I have reasonably good test coverage, but I've come to realize that the tests I've been writing are definitely integration/acceptance tests, not unit tests at all, and I have critical portions of my application that are not being tested effectively. I want to fix this ASAP. Here's my problem. My schema is deeply relational, and heavily time-oriented, giving my model object high internal coupling and lots of state. Many of my model methods query based on time intervals, and I've got a lot of auto_now_add going on in timestamped fields. So take a method that looks like this for example: def summary(self, startTime=None, endTime=None): # ... logic to assign a proper start and end time # if none was provided, probably using datetime.now() objects = self.related_model_set.manager_method.filter(...) return sum(object.key_method(startTime, endTime) for object in objects) How does one approach testing something like this? Here's where I am so far. It occurs to me that the unit testing objective should be given some mocked behavior by key_method on its arguments, is summary correctly filtering/aggregating to produce a correct result? Mocking datetime.now() is straightforward enough, but how can I mock out the rest of the behavior? I could use fixtures, but I've heard pros and cons of using fixtures for building my data (poor maintainability being a con that hits home for me). I could also setup my data through the ORM, but that can be limiting, because then I have to create related objects as well. And the ORM doesn't let you mess with auto_now_add fields manually. Mocking the ORM is another option, but not only is it tricky to mock deeply nested ORM methods, but the logic in the ORM code gets mocked out of the test, and mocking seems to make the test really dependent on the internals and dependencies of the function-under-test. The toughest nuts to crack seem to be the functions like this, that sit on a few layers of models and lower-level functions and are very dependent on the time, even though these functions may not be super complicated. My overall problem is that no matter how I seem to slice it, my tests are looking way more complex than the functions they are testing.

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• Do immutable objects and DDD go together?

  - by SnOrfus

  Consider a system that uses DDD (as well: any system that uses an ORM). The point of any system realistically, in nearly every use case, will be to manipulate those domain objects. Otherwise there's no real effect or purpose. Modifying an immutable object will cause it to generate a new record after the object is persisted which creates massive bloat in the datasource (unless you delete previous records after modifications). I can see the benefit of using immutable objects, but in this sense, I can't ever see a useful case for using immutable objects. Is this wrong?

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