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  • Circular Bullet Spread not Even

    - by SoulBeaver
    I'm creating a bullet shooter much in the style of Touhou. Right now I want to have a very simple circular shot being fired from the enemy. See this picture: As you can see, the spacing is very uneven, which isn't very good if you want to survive. The code I'm using is this: private function shoot() : void { const BULLETS_PER_WAVE : int = 72; var interval : Number = BULLETS_PER_WAVE / 360; for (var i : int = 0; i < BULLETS_PER_WAVE; ++i { var xSpeed : Number = GameConstants.BULLET_NORMAL_SPEED_X * Math.sin(i * interval); var ySpeed : Number = GameConstants.BULLET_NORMAL_SPEED_Y * Math.cos(i * interval); BulletFactory.createNormalBullet(bulletColor_, alice_.center, xSpeed, ySpeed); } canShoot_ = false; cooldownTimer_.start(); } I imagine my mistake is in the sin, cos functions, but I'm not entirely sure what's wrong.

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  • Application/Server dependency mapping

    - by David Stratton
    I'm just curious as to whether such as tool exists (free, open source, or commercial but for a reasonable price) before I build it myself. We're looking for a simple solution to simplify taking web apps online and offline when a server is undergoing maintenance. The idea is that we be able to mark a server as unavailable, and then mark all dependent (direct and indirect) as offline. Our first proof-of-concept is running, and we created an aspx page that lists various applications that have an App_Offline.html file with a friendly "Down for Maintenance" message in a GridView. In the GridView, each app has a LinkButton that, when clicked, either renames the App_Offline.htm to App_Offline.html or vice-versa to take the app online and offline. The next step is to set up all of our dependencies. For example, our store locater would be dependent on our web services, which in turn are dependent on our SQL Server. (that's a simple example. We can easily have several layers, or one app dependent on multiple servers, etc.) In this example, if the SQL server goes down, we would need to drill down recursively to find all apps that depend on it, and then turn them off and on by renaming the App_Offline file appropriately. I realize this will be relatively simple to build, but could be complex to manage. I'm sure we're not the first team to think of this concept, and I'm wondering if there are any open source tools, or if any of you have done something similar and can help us avoid pitfalls. Edit - Update I found the category of software I'm looking for. it's called CMDB - (Configuration Management Database), and it's generally more of a Network Admin type tool than a developer tool. I found some open source products in this category, but none written in .NET. I had considered moving this question to ServerFault.com when I realized I was looking for a netowrk Admin type tool, but since I'm looking for code and a modifiable solution I'll keep the question here.

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  • Using a Dependency Injection Container in an enterprise solution with multiple different configurati

    - by KevinT
    Can anyone point me towards some good documentation / code examples on how best to manage the configuration of a DI container in a scenario where you need different configuations sets? We have a layered, distributed application that has multiple entry points (ie; a website, winforms app, office plugin etc). Depending on how you are using the solution (through a UI vs. an automated workflow for example), it needs to be configured slightly differently. We are using Windsor, and it's fluent configuration capabilities.

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  • Dependency Injection for Windows Phone 7

    - by Igor Zevaka
    I was trying to use Unity 2.0 beta 2 for Silverlight in my Windows Phone 7 project and I kept getting this crash: Microsoft.Practices.Unity.Silverlight.dll!Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy.DynamicMethodConstructorStrategy() + 0x1f bytes Microsoft.Practices.Unity.Silverlight.dll!Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy.DynamicMethodConstructorStrategy() + 0x1f bytes mscorlib.dll!System.Reflection.RuntimeConstructorInfo.InternalInvoke(System.Reflection.RuntimeConstructorInfo rtci = {System.Reflection.RuntimeConstructorInfo}, System.Reflection.BindingFlags invokeAttr = Default, System.Reflection.Binder binder = null, object parameters = {object[0]}, System.Globalization.CultureInfo culture = null, bool isBinderDefault = false, System.Reflection.Assembly caller = null, bool verifyAccess = true, ref System.Threading.StackCrawlMark stackMark = LookForMyCaller) mscorlib.dll!System.Reflection.RuntimeConstructorInfo.InternalInvoke(object obj = null, System.Reflection.BindingFlags invokeAttr = Default, System.Reflection.Binder binder = null, object[] parameters = {object[0]}, System.Globalization.CultureInfo culture = null, ref System.Threading.StackCrawlMark stackMark = LookForMyCaller) + 0x103 bytes mscorlib.dll!System.Activator.InternalCreateInstance(System.Type type = {Name = "DynamicMethodConstructorStrategy" FullName = "Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy"}, bool nonPublic = false, ref System.Threading.StackCrawlMark stackMark = LookForMyCaller) + 0xf0 bytes mscorlib.dll!System.Activator.CreateInstance() + 0xc bytes Microsoft.Practices.Unity.Silverlight.dll!Microsoft.Practices.ObjectBuilder2.StagedStrategyChain.AddNew(Microsoft.Practices.Unity.ObjectBuilder.UnityBuildStage stage = Creation) + 0x1d bytes Microsoft.Practices.Unity.Silverlight.dll!Microsoft.Practices.Unity.UnityDefaultStrategiesExtension.Initialize() + 0x6c bytes Microsoft.Practices.Unity.Silverlight.dll!Microsoft.Practices.Unity.UnityContainerExtension.InitializeExtension(Microsoft.Practices.Unity.ExtensionContext context = {Microsoft.Practices.Unity.UnityContainer.ExtensionContextImpl}) + 0x31 bytes Microsoft.Practices.Unity.Silverlight.dll!Microsoft.Practices.Unity.UnityContainer.AddExtension(Microsoft.Practices.Unity.UnityContainerExtension extension = {Microsoft.Practices.Unity.UnityDefaultStrategiesExtension}) + 0x1a bytes Microsoft.Practices.Unity.Silverlight.dll!Microsoft.Practices.Unity.UnityContainer.UnityContainer() + 0xf bytes Thinking I could resolve it I've tried a few things but to no avail. Turns out that this is a rather fundamental problem and my assumption that Windows Phone 7 is Silverlight 3 + Some other stuff is wrong. This page describes the differences between Mobile Silverlight and Silverlight 3. Of particular interest is this: The System.Reflection.Emit namespace is not supported in Silverlight for Windows Phone. This is precisely why Unity is crashing on the phone, DynamicMethodConstructorStrategy class uses System.Reflection.Emit quite extensively... So the question is, what alternative to Unity is there for Windows Phone 7?

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  • Windsor dependency

    - by jack
    I have a class with constructor like this: public UserRepository(IBlockRepository blockRepos) { } and again, I have another class with the constructor like this: public BlockRepository(IUserRepository userRepo) { } this causes the Windsor error: Castle.MicroKernel.Handlers.HandlerException: Can't create component 'UserRepository' as it has dependencies to be satisfied. UserRepository is waiting for the following dependencies How do I fix this?

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  • Dependency on Spring's annotations

    - by Jacques René Mesrine
    I have annotated my classes with @Repository, @Resource, @Component, @Service annotations but these classes must run in 2 environments. The first environment is Spring 2.x based while the other has no spring at all. I'm sure the code will fail without the spring jars & I want to know ideas from you on how I can retain the annotations but still work in both environments

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  • IoC / Dependency Injection - please explain code versus XML

    - by steve.macdonald
    I understand basically how IoC frameworks work, however one thing I don't quite get is how code-based config is supposed to work. With XML I understand how you could add a new assembly to a deployed application, then change the config in XML to include it. If the application is already deployed (i.e., compiled in some form) then how can code changes be made without recompiling? Or is that what people do, just change config in code and recompile?

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  • StructureMap resolve dependency through injection instead of service location

    - by Chris Marisic
    In my project I register many ISerializers implementations with the assembly scanner. FWIW this is the code that registers my ISerializers Scan(scanner => { scanner.AssemblyContainingType<ISerializer>(); scanner.AddAllTypesOf<ISerializer>().NameBy(type => type.Name); scanner.WithDefaultConventions(); }); Which then correctly registers ISerializer (...ISerializer) Scoped as: Transient JsonSerializer Configured Instance of ...JsonSerializer BsonSerializer Configured Instance of ...BsonSerializer And so forth. Currently the only way I've been able to figure out how to resolve the serializer I want is to hardcode a service location call with jsonSerializer = ObjectFactory.GetNamedInstance<ISerializer>("JsonSerializer"); Now I know in my class that I specifically want the jsonSerializer so is there a way to configure a rule or similar that says for ISerializer's to connect the named instance based on the property name? So that I could have MySomeClass(ISerializer jsonSerializer, ....) And StructureMap correctly resolve this scenario? Or am I approaching this wrong and perhaps I should just register the concrete type that implements ISerializer and then just specifically use MySomeClass(JsonSerializer jsonSerializer, ....) for something along these lines with the concrete class?

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  • Instance management with Dependency injection (DI)

    - by Sven
    Hello I'm trying to understand how DI exactly works. I'm currently using Windsor as DI container. I use this to load my services dynamically in code without direct reference. But I have change behaviour and want to know a bit more on the instance mgmt using DI. I have a web app projct, here is a WCF service using PerCall as instancemode. This means, new instance/call. In this WCF I call a service (loaded via DI) and this service calls another service (again loaded via DI). The WCF is a new instance in the appdomain, but what about the services. They are also new instances? Is this DI container shared among all WCF instances and are the services in this container also single instances? Can anyone clarify?

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  • Dependency Property Set Priority: CodeBehind vs. XAML

    - by LukePet
    When I initialize a control property from code, the binding to the same property defined on XAML don't work. Why? For Example, I set control properties on startup with this statements: myControl.SetValue(UIElement.VisibilityProperty, DefaultProp.Visibility); myControl.SetValue(UIElement.IsEnabledProperty, DefaultProp.IsEnabled); and on xaml I bind the property of myControl in this way: IsEnabled="{Binding Path=IsKeyControlEnabled}" now, when the property "IsKeyControlEnabled" changes to false, myControl remains enabled (because it's initialize with true value). How can I do?

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  • Dependency parsing

    - by C.
    Hi I particularly like the transduce feature offered by agfl in their EP4IR http://www.agfl.cs.ru.nl/EP4IR/english.html The download page is here: http://www.agfl.cs.ru.nl/download.html Is there any way i can make use of this in a c# program? Do I need to convert classes to c#? Thanks :)

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  • Dependency Injection Question - ASP.NET

    - by Paul
    I'm starting a web application that contains the following projects: Booking.Web Booking.Services Booking.DataObjects Booking.Data I'm using the repository pattern in my data project only. All services will be the same, no matter what happens. However, if a customer wants to use Access, it will use a different data repository than if the customer wants to use SQL Server. I have StructureMap, and want to be able to do the following: Web project is unaffected. It's a web forms application that will only know about the services project and the dataobjects project. When a service is called, it will use StructureMap (by looking up the bootstrapper.cs file) to see which data repository to use. An example of a services class is the error logging class: public class ErrorLog : IErrorLog { ILogging logger; public ErrorLog() { } public ErrorLog(ILogging logger) { this.logger = logger; } public void AddToLog(string errorMessage) { try { AddToDatabaseLog(errorMessage); } catch (Exception ex) { AddToFileLog(ex.Message); } finally { AddToFileLog(errorMessage); } } private void AddToDatabaseLog(string errorMessage) { ErrorObject error = new ErrorObject { ErrorDateTime = DateTime.Now, ErrorMessage = errorMessage }; logger.Insert(error); } private void AddToFileLog(string errorMessage) { // TODO: Take this value from the web.config instead of hard coding it TextWriter writer = new StreamWriter(@"E:\Work\Booking\Booking\Booking.Web\Logs\ErrorLog.txt", true); writer.WriteLine(DateTime.Now.ToString() + " ---------- " + errorMessage); writer.Close(); } } I want to be able to call this service from my web project, without defining which repository to use for the data access. My boostrapper.cs file in the services project is defined as: public class Bootstrapper { public static void ConfigureStructureMap() { ObjectFactory.Initialize(x => { x.AddRegistry(new ServiceRegistry()); } ); } public class ServiceRegistry : Registry { protected override void configure() { ForRequestedType<IErrorLog>().TheDefaultIsConcreteType<Booking.Services.Logging.ErrorLog>(); ForRequestedType<ILogging>().TheDefaultIsConcreteType<SqlServerLoggingProvider>(); } } } What else do I need to get this to work? When I defined a test, the ILogger object was null. Thanks,

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  • Is testability alone justification for dependency injection?

    - by fearofawhackplanet
    The advantages of DI, as far as I am aware, are: Reduced Dependencies More Reusable Code More Testable Code More Readable Code Say I have a repository, OrderRepository, which acts as a repository for an Order object generated through a Linq to Sql dbml. I can't make my orders repository generic as it performs mapping between the Linq Order entity and my own Order POCO domain class. Since the OrderRepository by necessity is dependent on a specific Linq to Sql DataContext, parameter passing of the DataContext can't really be said to make the code reuseable or reduce dependencies in any meaningful way. It also makes the code harder to read, as to instantiate the repository I now need to write new OrdersRepository(new MyLinqDataContext()) which additionally is contrary to the main purpose of the repository, that being to abstract/hide the existence of the DataContext from consuming code. So in general I think this would be a pretty horrible design, but it would give the benefit of facilitating unit testing. Is this enough justification? Or is there a third way? I'd be very interested in hearing opinions.

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  • Dependency property does not work within a geometry in a controltemplate

    - by Erik Bongers
    I have a DepencencyProperty (a boolean) that works fine on an Ellipse, but not on an ArcSegment. Am I doing something that is not possible? Here's part of the xaml. Both the TemplateBindings of Origin and LargeArc do not work in the geometry. But the LargeArc DependencyProperty does work in the Ellipse, so my DependencyProperty seems to be set up correctly. <ControlTemplate TargetType="{x:Type nodes:TestCircle}"> <Canvas Background="AliceBlue"> <Ellipse Height="10" Width="10" Fill="Yellow" Visibility="{TemplateBinding LargeArc, Converter={StaticResource BoolToVisConverter}}"/> <Path Canvas.Left="0" Canvas.Top="0" Stroke="Black" StrokeThickness="3"> <Path.Data> <GeometryGroup> <PathGeometry> <PathFigure IsClosed="True" StartPoint="{TemplateBinding Origin}"> <LineSegment Point="150,100" /> <ArcSegment Point="140,150" IsLargeArc="{TemplateBinding LargeArc}" Size="50,50" SweepDirection="Clockwise"/> </PathFigure> </PathGeometry> </GeometryGroup> </Path.Data> </Path> </Canvas> </ControlTemplate> What I'm trying to build is a (sort of) pie-shaped usercontrol where the shape of the Pie is defined by DependencyProperties and the actual graphics used are in a template, so they can be replaced or customized. In other words: I would like the code-behind to be visual-free (which, I assume, is good separation). SOLUTION--------------------------(I'm not allowed to answer my own questions yet) I found the answer myself, and this can be useful for others encountering the same issue. This is why the TemplateBinding on the Geometry failed: A TemplateBinding will only work when binding a DependencyProperty to another DependencyProperty. Following article set me on the right track: http://blogs.msdn.com/b/liviuc/archive/2009/12/14/wpf-templatebinding-vs-relativesource-templatedparent.aspx The ArcSegment properties are no DependencyProperties. Thus, the solution to the above problem is to replace <ArcSegment Point="140,150" IsLargeArc="{TemplateBinding LargeArc}" with <ArcSegment Point="140,150" IsLargeArc="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=LargeArc}" Colin, your working example where an 'ordinary' binding was used in the geometry set me on the right track. BTW, love the infographics and the construction of your UserControl in your blogpost. And, hey, that quick tip on code snippets, and especially on that DP attribute and the separation of those DPs into a partial class file is pure gold!

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  • Dependency injection: Scoping by region (Guice, Spring, Whatever)

    - by Itay
    Here's a simplified version of my needs. I have a program where every B object has its own C and D object, injected through Guice. In addition an A object is injected into every C and D objects. What I want: that for each B object, its C and D objects will be injected with the same A object. Specifically, I want the output of the program (below) to be: Created C0 with [A0] Created D0 with [A0] Created B0 with [C0, D0] Created C1 with [A1] Created D1 with [A1] Created B1 with [C1, D1] Where it currently produces the following output: Created C0 with [A0] Created D0 with [A1] <-- Should be A0 Created B0 with [C0, D0] Created C1 with [A2] <-- Should be A1 Created D1 with [A3] <-- Should be A1 Created B1 with [C1, D1] I am expecting DI containers to allow this kind of customization but so far I had no luck in finding a solution. Below is my Guice-based code, but a Spring-based (or other DI containers-based) solution is welcome. import java.util.Arrays; import com.google.inject.*; public class Main { public static class Super { private static Map<Class<?>,Integer> map = new HashMap<Class<?>,Integer>(); private Integer value; public Super(Object... args) { value = map.get(getClass()); value = value == null ? 0 : ++value; map.put(getClass(), value); if(args.length > 0) System.out.println("Created " + this + " with " + Arrays.toString(args)); } @Override public final String toString() { return "" + getClass().getSimpleName().charAt(0) + value; } } public interface A { } public static class AImpl extends Super implements A { } public interface B { } public static class BImpl extends Super implements B { @Inject public BImpl(C c, D d) { super(c,d); } } public interface C { } public static class CImpl extends Super implements C { @Inject public CImpl(A a) { super(a); } } public interface D { } public static class DImpl extends Super implements D { @Inject public DImpl(A a) { super(a); } } public static class MyModule extends AbstractModule { @Override protected void configure() { bind(A.class).to(AImpl.class); bind(B.class).to(BImpl.class); bind(C.class).to(CImpl.class); bind(D.class).to(DImpl.class); } } public static void main(String[] args) { Injector inj = Guice.createInjector(new MyModule()); inj.getInstance(B.class); inj.getInstance(B.class); } }

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  • Dependency Injection and Unit of Work pattern

    - by sunwukung
    I have a dilemma. I've used DI (read: factory) to provide core components for a homebrew ORM. The container provides database connections, DAO's,Mappers and their resultant Domain Objects on request. Here's a basic outline of the Mappers and Domain Object classes class Mapper{ public function __constructor($DAO){ $this->DAO = $DAO; } public function load($id){ if(isset(Monitor::members[$id]){ return Monitor::members[$id]; $values = $this->DAO->selectStmt($id); //field mapping process omitted for brevity $Object = new Object($values); return $Object; } } class User(){ public function setName($string){ $this->name = $string; //mark modified by means fair or foul } } The ORM also contains a class (Monitor) based on the Unit of Work pattern i.e. class Monitor(){ private static array modified; private static array dirty; public function markClean($class); public function markModified($class); } The ORM class itself simply co-ordinates resources extracted from the DI container. So, to instantiate a new User object: $Container = new DI_Container; $ORM = new ORM($Container); $User = $ORM->load('user',1); //at this point the container instantiates a mapper class //and passes a database connection to it via the constructor //the mapper then takes the second argument and loads the user with that id $User->setName('Rumpelstiltskin');//at this point, User must mark itself as "modified" My question is this. At the point when a user sets values on a Domain Object class, I need to mark the class as "dirty" in the Monitor class. I have one of three options as I can see it 1: Pass an instance of the Monitor class to the Domain Object. I noticed this gets marked as recursive in FirePHP - i.e. $this-Monitor-markModified($this) 2: Instantiate the Monitor directly in the Domain Object - does this break DI? 3: Make the Monitor methods static, and call them from inside the Domain Object - this breaks DI too doesn't it? What would be your recommended course of action (other than use an existing ORM, I'm doing this for fun...)

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  • Dependency Injection: How to maintain multiple configurations?

    - by Malax
    Hi StackOverflow, Lets assume we've build a system with a DI framework which is working quite fine. This system currently uses JMS to "talk" with other systems not maintained by us. The majority of our customers like the JMS approach and uses it according to our specification. The component which does all the messaging is injected with Spring into the rest of the application. Now we got the case that one customer cannot implement the JMS solution and want to use another messaging technology. Thats not a problem because we can simply implement a messaging service using this technology and inject it in the rest of the application. But how are we supposed to handle the deployment and maintenance of the configuration? Since the application uses Spring i could imagine to check in all the configurations i have for this application and the system administrator could start the application and passing the name of the DI XML file to specify which configuration should be loaded. But... it just don't feel right. Are there any solutions for such cases available? What are the best-practices you use? I could even imagine more complex scenarios which do not contain only one service substitution... Thanks a lot!

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  • Is dependency injection possible for JSP beans?

    - by kazanaki
    This may be a long shot question.. I am working on an application that is based on JSP/Javascript only (without a Web framework!) Is there a way to have depencency injection for JSP beans? By jsp beans I mean beans defined like this <jsp:useBean id="cart" scope="session" class="session.Carts" /> Is there a way/library/hack to intercept the bean creation so that when "cart" is referenced for the first time, some some of injection takes place? Can I define somewhere a "listener" for JSP beans (like you can do for JSF beans for example)? I am free to do anything I want in the back-end, but I cannot add a web framework in the front-end (Don't ask!)

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  • NHibernate on WCF Dependency Injection

    - by Diego Dias
    Hi, I would like of inject a wrapper of my sessionfactory in my wcf service, but my service is in other server and I want set nhibernate in my site asp.net. I have a interface as: public interface ISessionBuilder { ISession Current{get;}; void Close(); } public class SessionBuilder : ISessionBuilder { static SessionBuilder() { Initialize(); } public ISession Current{ get; private set; } public void Close() { //aqui eu fecho a session } private static void Initialize() { //aqui eu configuro o NHibernate } } I want to be able of set SessionBuilder in the site asp.net and inject this implementation in my wcf Service where I have my repositories which will consume SessionBuilder to query my database. Anyone have some sugestion?

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  • Dependency propery Binding Problem

    - by deepak
    i have attached my sample project here, http://cid-08ec3041618e8ee4.skydrive.live.com/self.aspx/.SharedFavorites/dep2.rar Can any one look and tell whats wrong in that, everythng working well, but i cant bind the value in text box, when u click the button u can see the passed value to usercontrol in message box, but i cant bind that value in text box. Why????

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  • Ninject: Syntax for dependency arguments?

    - by Rosarch
    I have a class with a public constructor: public MasterEngine(IInputReader inputReader) { this.inputReader = inputReader; graphicsDeviceManager = new GraphicsDeviceManager(this); Components.Add(new GamerServicesComponent(this)); } How can I inject dependencies like graphicsDeviceManager and new GamerServicesComponent while still supplying the argument this?

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  • XNA and Ninject: Syntax for dependency arguments?

    - by Rosarch
    I have a class with a public constructor: public MasterEngine(IInputReader inputReader) { this.inputReader = inputReader; graphicsDeviceManager = new GraphicsDeviceManager(this); Components.Add(new GamerServicesComponent(this)); } How can I inject dependencies like graphicsDeviceManager and new GamerServicesComponent while still supplying the argument this?

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