HI

I made more investigations and it turns out that the above threading issue was indeed causing slowdown. It seems that the issue is now resolved. 

Hi again!
The game is advancing fine but I do have a question.

I added RigidBodies to the game as objects that the car can collide with. It seems that if I add RigidBodes with the following code (and all required rendering code)

SphereShape sphereShape = new SphereShape(0.5f);
             for (int i = 0; i < 40; i++)
             {
                 Vector3F position = RandomHelper.Random.NextVector3F(-60, 60);
                 position.Y = 26;
                 AddBody("Sphere" + i, new Pose(position), sphereShape, MotionType.Dynamic);
             }

Everything works just fine.  I have coded my own loading function based on car loading function (and uses different rendering code as well):

... (code omitted)
var ma = MassFrame.FromShapeAndMass(meshCollisionShapeX, Vector3F.One, obj.mass, 0.1f, 10)

RigidBody trackObject = AddBody(obj.name, (obj.getMeshLocation(rataPose.ToXna())), new BoxShape(10.0f, 5.0f, 5.0f), MotionType.Dynamic);
// Or Alternatively new RigidBody(new BoxShape(10.0f, 5.0f, 5.0f)
  {

                    Name = obj.name,
                    Pose = obj.getMeshLocation(rataPose.ToXna()),
                    MotionType = MotionType.Dynamic,
                };


                obj.initialPosition = new Pose(trackObject.Pose.Position);
                trackObject.CollisionResponseEnabled = true;
                trackObject.CcdEnabled = true;
               SmartLoader.Simulation.RigidBodies.Add(trackObject);

Above code somehow does not provide good results. I can see the objects but objects move quite differently that the objects that are loaded with the earlier code. Objects are quite unstable and move quite unexpectedly. They can drop through the world or shoot to the sky. If I add mass or friction I can actually make them to stay in one place but then it is difficult for a car to move these objects at all (by hitting them). Earlier objects work just fine when car hits them. So what could be the difference between these to pieces of code?

Hi

I have now more important issue issue.It takes a quite a while dynamically calculate collision model thus am now attempting to  build the triangle mesh and the AABB tree in the XNA content pipeline and avoid the building of the tree at runtime (see Sample 33). However i have run into problems

I have added contentpipeline extension  to my WP7 project (I have two content pipeline extensions one for this and one for skybox), then I have XNA project and silverlight project and Contents (5 projects in my solution).

No matter what I get the following error message

Error 2 The type 'System.Xml.Serialization.IXmlSerializable' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Xml, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.    ****Stuff taken away** CollisionModelProcessor.cs 69 25 ContentPipelineExtension2 , (The cause of this is Vector3F?)

This could be somekind of library clash between different projects but I have tried to add System.Xml (different versions) and System.xml.serializable. My Assembly references should be fine but they are not, and my using statements should be fine too. Could it be what I am mixing code/dlls from windows and Windows Phone?

Hi
The issue is not with the above references since they are already in.I just keep getting the error.

My problem is similar to the following

http://forums.silverlight.net/t/22116... 

Hi and thanks!

I managed to track down the reason what caused the issue. The problem was that I have Windows Phone 7 project and apparently ContentPipeline likes to work with  DigitalRune libraries that are build for \.NET Framework\v3.5 and not for \Windows Phone\v7.0 libraries. I added .Net libraries to Contentpipeline extension and it did build (Made some minor modifications).

Now unfortunately this did not resolve all my problems. Now I can select CollisionModel as content processor and it seems everything is fine. Now when I set collisionModel as a contentprocessor for .x file and build the project I get the following error message (for each  .x file).

Error    2    Building content threw ArgumentException: Cannot serialize type System.Func`2[System.Int32,DigitalRune.Geometry.Shapes.Aabb]. Delegates are not supported.
   at Microsoft.Xna.Framework.Content.Pipeline.TypeHandlerFactory`1.CreateHandler(Type type)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentTypeWriterFactory.CreateWriter(Type type)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentCompiler.GetTypeWriterInternal(Type type)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentCompiler.GetTypeWriter(Type type)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ReflectiveWriterMemberHelper.Initialize(ContentCompiler compiler, PropertyInfo propertyInfo)
   at Microsoft.Xna.Framework.Content.Pipeline.MemberHelperBase`1.TryInitialize(TSerializer serializer, Type declaringType, PropertyInfo propertyInfo)
   at Microsoft.Xna.Framework.Content.Pipeline.MemberHelperBase`1.CreateMemberHelpers[TDerived](TSerializer serializer, Type declaringType, List`1 memberHelpers)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ReflectiveWriter.Initialize(ContentCompiler compiler)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentTypeWriter.DoInitialize(ContentCompiler compiler)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentCompiler.InitializeTypeWriter(ContentTypeWriter writer)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentCompiler.GetTypeWriterInternal(Type type)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentCompiler.GetTypeWriter(Type type)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ReflectiveWriterMemberHelper.Initialize(ContentCompiler compiler, PropertyInfo propertyInfo)
   at Microsoft.Xna.Framework.Content.Pipeline.MemberHelperBase`1.TryInitialize(TSerializer serializer, Type declaringType, PropertyInfo propertyInfo)
   at Microsoft.Xna.Framework.Content.Pipeline.MemberHelperBase`1.CreateMemberHelpers[TDerived](TSerializer serializer, Type declaringType, List`1 memberHelpers)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ReflectiveWriter.Initialize(ContentCompiler compiler)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentTypeWriter.DoInitialize(ContentCompiler compiler)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentCompiler.InitializeTypeWriter(ContentTypeWriter writer)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentCompiler.GetTypeWriterInternal(Type type)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentWriter.GetTypeWriter(Type type, Int32& typeIndex)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentWriter.WriteObject[T](T value)
   at Microsoft.Xna.Framework.Content.Pipeline.Processors.ModelContent.Write(ContentWriter output)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ModelWriter.Write(ContentWriter output, ModelContent value)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentTypeWriter`1.Write(ContentWriter output, Object value)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentWriter.InvokeWriter[T](T value, ContentTypeWriter writer)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentWriter.WriteObject[T](T value)
   at Microsoft.Xna.Framework.Content.Pipeline.Serialization.Compiler.ContentCompiler.Compile(Stream output, Object value, TargetPlatform targetPlatform, GraphicsProfile targetProfile, Boolean compressContent, String rootDirectory, String referenceRelocationPath)
   at Microsoft.Xna.Framework.Content.Pipeline.BuildCoordinator.SerializeOutputAsset(BuildItem item, Object assetData, String outputFilename)
   at Microsoft.Xna.Framework.Content.Pipeline.BuildCoordinator.SerializeAsset(BuildItem item, Object assetData)
   at Microsoft.Xna.Framework.Content.Pipeline.BuildCoordinator.BuildAssetWorker(BuildItem item)
   at Microsoft.Xna.Framework.Content.Pipeline.BuildCoordinator.BuildAsset(BuildItem item)
   at Microsoft.Xna.Framework.Content.Pipeline.BuildCoordinator.RunTheBuild()
   at Microsoft.Xna.Framework.Content.Pipeline.Tasks.BuildContent.RemoteProxy.RunTheBuild(BuildCoordinatorSettings settings, TimestampCache timestampCache, ITaskItem[] sourceAssets, String[]& outputContent, String[]& rebuiltContent, String[]& intermediates, Dictionary`2& dependencyTimestamps, KeyValuePair`2[]& warnings)    C:\Users\koti\Desktop\JuJu_Race_working\JuJu_Race\JuJu_RaceLibContent\Track1_Parts\track1_extras.x    JuJu_RaceLib

 

So any ideas how to get past this? Or is there another way of generating collision model at buildtime? Perhaps with a Windows application?