TorqueObject .MarkForDelete - Cannot mark object for delete

#1 Setting the MarkForDelete property on any registered TorqueObject will delete from the scene instantly. It sounds like you are setting this property to true on an object that was created but on registered via TorqueObjectDatabase.Instance.Register(). If this is a runtime error, do you have any stack trace output that you can post? If you are not explicitly setting MarkForDelete, then something else is... maybe you have code that is trying to destroy an object or have a KillCollision property set.

John K.

#2 Well I am explicitly calling MarkForDelete on a object and it was created using the TorqueObjectDatabase.Instance.Register() method. Is there another to delete objects from the scene that I am not aware of?

Let me explain kinda of wahts going on here in detail. I have a tetrix like game that when three pieces drop to make a set it dissappears and works fine, however when another three pieces drop in the same place with the same color I get that error message. As one object is falling it is set as the playerObject, when it collides i remove that from being the player object and create a new object to start falling and Register it wirth the Torque database with this piece of code.

// clone the template to create the player object

_currentTriangle = (T2DSceneObject)triangleTemplate.Clone();

// place the player object
_currentTriangle.Position = new Microsoft.Xna.Framework.Vector2(0, -50);

// register our player with the TorqueObjectDatabase
TorqueObjectDatabase.Instance.Register(_currentTriangle);

And for some reason when i put a set in the place of a previous set with diffirent colors it confuses one of the objects colors with the previous ones colors in the TorqueObjectDatabase. Let me see if I can get the stack trace for you here.

at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)\r\n at System.Environment.get_StackTrace()\r\n at StarterGame2D.TriangleComponent.DeleteObject(T2DSceneObject thisObject) in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Game\\Components\\TriangleComponent.cs:line 408\r\n at StarterGame2D.TriangleComponent.TestCollision(T2DSceneObject ourObject) in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Game\\Components\\TriangleComponent.cs:line 339\r\n at StarterGame2D.TriangleComponent._ResolveCollision(T2DSceneObject ourObject, T2DSceneObject theirObject, T2DCollisionInfo& info, T2DCollisionMaterial physicsMaterial, Boolean handleBoth) in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Game\\Components\\TriangleComponent.cs:line 224\r\n at GarageGames.Torque.T2D.T2DPhysicsComponent._ResolveCollisions(List'1 list) in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Torque\\T2DComponents\\T2DPhysicsComponent.cs:line 595\r\n at GarageGames.Torque.T2D.T2DPhysicsComponent.ProcessTick(Move move, Single dt) in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Torque\\T2DComponents\\T2DPhysicsComponent.cs:line 426\r\n at GarageGames.Torque.Sim.ProcessList._TickObjects(Single tickSec) in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Torque\\Sim\\ProcessList.cs:line 698\r\n at GarageGames.Torque.Sim.ProcessList.AdvanceTick(Single floatMS) in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Torque\\Sim\\ProcessList.cs:line 500\r\n at GarageGames.Torque.XNA.TorqueEngineComponent._UpdateSim(String eventName, Single elapsed) in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Torque\\XNA\\TorqueEngineComponent.cs:line 781\r\n at GarageGames.Torque.Core.TorqueEvent'1._Trigger(Delegate d) in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Torque\\Core\\TorqueEvent.cs:line 74\r\n at GarageGames.Torque.Core.TorqueEventManager._TriggerEvent(TorqueEventBase ev) in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Torque\\Core\\TorqueEvent.cs:line 583\r\n at GarageGames.Torque.Core.TorqueEventManager.MgrProcessEvents() in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Torque\\Core\\TorqueEvent.cs:line 434\r\n at GarageGames.Torque.Core.TorqueEventManager.ProcessEvents() in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Torque\\Core\\TorqueEvent.cs:line 288\r\n at GarageGames.Torque.XNA.TorqueEngineComponent.Update(GameTime gameTime) in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Torque\\XNA\\TorqueEngineComponent.cs:line 433\r\n at Microsoft.Xna.Framework.Game.Update(GameTime gameTime)\r\n at Microsoft.Xna.Framework.Game.Tick()\r\n at Microsoft.Xna.Framework.Game.HostIdle(Object sender, EventArgs e)\r\n at Microsoft.Xna.Framework.GameHost.OnIdle()\r\n at Microsoft.Xna.Framework.WindowsGameHost.ApplicationIdle(Object sender, EventArgs e)\r\n at System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FDoIdle(Int32 grfidlef)\r\n at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)\r\n at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)\r\n at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)\r\n at System.Windows.Forms.Application.Run(Form mainForm)\r\n at Microsoft.Xna.Framework.WindowsGameHost.Run()\r\n at Microsoft.Xna.Framework.Game.Run()\r\n at StarterGame2D.Game.Main() in C:\\Documents and Settings\\Phil\\My Documents\\Visual Studio 2005\\Projects\\Triangulation\\Triangulation\\Game\\Game.cs:line 86"


Thanks for the help John!

Phil

#3 The stack trace shows a TriangleComponent._ResolveCollision... is there a KillCollision set as an event handler? If so, that could be deleting the object before you get a chance to set the MarkForDelete flag. If you want to email a code sample to me, I can take a closer look... it sounds like the TriangleComponent is where I need to look. I'll keep thinking about this - something doesn't sound right. Another thought - is it possible that you are deleting your template instead of your clone?

John K.