Tiles disappearing after minimizing and restoring game window
by Diego Santos Leao - GameBlox Studio · in Torque X 2D · 02/24/2010 (2:00 pm) · 6 replies
If you pick a Torque X game and minimize and restore it, any tiles that were on the screen will disappear (like they were never there). If you unload and reload another level (in my case, that is) you will get an exception in this method of TorqueCoreMaterialsEffectManager.cs:
static public void SetParameter(EffectParameter param, Texture value)
{
if (param != null)
param.SetValue(value); <----------- right here
}
Exception description: "Cannot access a disposed object.rnObject name: 'Texture2D'."
Is this bug known? Is it being fixed?
It was an old bug that a purple screen (or other color) would appear if you minimize and restore a window in Torque X (2D). I thought that problem had been fixed when I tried minimizing a game and it worked. Unfortunately I was wrong, the problem is only a little different and more restricted (to tilemaps) now.
It is utterly frustrating that bugs like this are being neglected for over two years.
===============================
Stack Trace:
===============================
static public void SetParameter(EffectParameter param, Texture value)
{
if (param != null)
param.SetValue(value); <----------- right here
}
Exception description: "Cannot access a disposed object.rnObject name: 'Texture2D'."
Is this bug known? Is it being fixed?
It was an old bug that a purple screen (or other color) would appear if you minimize and restore a window in Torque X (2D). I thought that problem had been fixed when I tried minimizing a game and it worked. Unfortunately I was wrong, the problem is only a little different and more restricted (to tilemaps) now.
It is utterly frustrating that bugs like this are being neglected for over two years.
===============================
Stack Trace:
===============================
at Microsoft.Xna.Framework.Helpers.CheckDisposed(Object obj, IntPtr pComPtr) at Microsoft.Xna.Framework.Graphics.EffectParameter.SetValue(Texture value) at GarageGames.Torque.Materials.EffectManager.SetParameter(EffectParameter param, Texture value) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreMaterialsEffectManager.cs:line 238 at GarageGames.Torque.Materials.SimpleMaterial._SetupGlobalParameters(SceneRenderState srs, MaterialInstanceData materialData) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreMaterialsSimpleMaterial.cs:line 163 at GarageGames.Torque.Materials.RenderMaterial.SetupEffect(SceneRenderState srs, MaterialInstanceData materialData) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreMaterialsRenderMaterial.cs:line 267 at GarageGames.Torque.Materials.MaterialManager.PreloadMaterials(SceneRenderState srs) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreMaterialsMaterialManager.cs:line 260 at GarageGames.Torque.Core.Xml.TorqueSceneData.Load(String filename, List`1 extraAssemblies) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreCoreXmlTorqueSceneData.cs:line 324 at GarageGames.Torque.Core.Xml.TorqueSceneData.Load(String filename) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreCoreXmlTorqueSceneData.cs:line 250 at GarageGames.Torque.GameUtil.SceneLoader.Load(String sceneFileName) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreGameUtilSceneLoader.cs:line 119 at GarageGames.Torque.PlatformerDemo.Game.LoadLevel(Int32 levelNumber) in E:PlatformerKitGameGame.cs:line 399 at GarageGames.Torque.PlatformerDemo.Game.LoadNextLevel() in E:PlatformerKitGameGame.cs:line 425 at GarageGames.Torque.PlatformerDemo.Components.KillerComponents.NextLevelTriggerComponent.OnEnter(T2DSceneObject ourObject, T2DSceneObject theirObject) in E:PlatformerKitGameComponentsKillerComponentsNextLevelTriggerComponent.cs:line 29 at GarageGames.Torque.T2D.T2DTriggerComponent.ProcessTick(Move move, Single elapsed) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0Torque2DT2DComponentsT2DTriggerComponent.cs:line 249 at GarageGames.Torque.Sim.ProcessList._TickObjects(Single tickSec) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreSimProcessList.cs:line 715 at GarageGames.Torque.Sim.ProcessList.AdvanceTick(Single floatMS) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreSimProcessList.cs:line 505 at GarageGames.Torque.XNA.TorqueEngineComponent._UpdateSim(String eventName, Single elapsed) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreXNATorqueEngineComponent.cs:line 877 at GarageGames.Torque.Core.TorqueEvent`1._Trigger(Delegate d) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreCoreTorqueEvent.cs:line 85 at GarageGames.Torque.Core.TorqueEventManager._TriggerEvent(TorqueEventBase ev) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreCoreTorqueEvent.cs:line 636 at GarageGames.Torque.Core.TorqueEventManager.MgrProcessEvents() in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreCoreTorqueEvent.cs:line 477 at GarageGames.Torque.Core.TorqueEventManager.ProcessEvents() in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreCoreTorqueEvent.cs:line 315 at GarageGames.Torque.XNA.TorqueEngineComponent.Update(GameTime gameTime) in C:GGTorque X 2D Pro 3.1.4v3.1.4.0TorqueCoreXNATorqueEngineComponent.cs:line 483 at Microsoft.Xna.Framework.Game.Update(GameTime gameTime) at GarageGames.Torque.PlatformerDemo.Game.Update(GameTime gameTime) in E:PlatformerKitGameGame.cs:line 388 at Microsoft.Xna.Framework.Game.Tick() at Microsoft.Xna.Framework.Game.HostIdle(Object sender, EventArgs e) at Microsoft.Xna.Framework.GameHost.OnIdle() at Microsoft.Xna.Framework.WindowsGameHost.ApplicationIdle(Object sender, EventArgs e) at System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FDoIdle(Int32 grfidlef) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(Form mainForm) at Microsoft.Xna.Framework.WindowsGameHost.Run() at Microsoft.Xna.Framework.Game.Run() at GarageGames.Torque.PlatformerDemo.GameStarter.Main(String[] args) in E:PlatformerKitGameMain.cs:line 11
About the author
Creative director at Gameblox Interactive, a game studio focused on downloadable games and advergames. www.gameblox.net - contact@gameblox.net.
#2
To make things worse, it happens even if I don't minimize the screen. It only happens when there is a tilemap on the screen. I have given up solving problems on TX, as there are just too many, and it requires a lot of XNA specific knowledge...
This is the stack trace:
02/24/2010 (5:12 pm)
It doesn't work... Thanks Duncan, but although this fix does make the tilemap reappear, when I try to unload the current level and load the next one, I get an exception "Object reference not set to an instance of an object" at TorqueCoreCoreTorqueEvent.cs, in the following method: /// <summary>
/// Stop callbacks to passed delegate and given key.
/// </summary>
/// <typeparam name="T">Type of data payload.</typeparam>
/// <param name="silenceThese">Event to stop listening to.</param>
/// <param name="forThisDelegate">Delegate to unregister.</param>
/// <param name="key">Key to match.</param>
public void MgrSilenceEvents<T>(TorqueEvent<T> silenceThese, TorqueEventDelegate<T> forThisDelegate, object key)
{
ConsumerNode exists;
if (_eventConsumers.TryGetValue(silenceThese.Name, out exists))
{
ConsumerNode toss = null;
if (exists._consumer == (Delegate)forThisDelegate) //<--- exception occurs here!
{
_eventConsumers[silenceThese.Name] = exists._next;
toss = exists;
}
else
{
while (exists._next != null)
{
if (exists._next._consumer == (Delegate)forThisDelegate && exists._next._key == key)
{
toss = exists._next;
exists._next = toss._next;
break;
}
...To make things worse, it happens even if I don't minimize the screen. It only happens when there is a tilemap on the screen. I have given up solving problems on TX, as there are just too many, and it requires a lot of XNA specific knowledge...
This is the stack trace:
at GarageGames.Torque.Core.TorqueEventManager.MgrSilenceEvents[T](TorqueEvent`1 silenceThese, TorqueEventDelegate`1 forThisDelegate, Object key) at GarageGames.Torque.Core.TorqueEventManager.SilenceEvents[T](TorqueEvent`1 silenceThese, TorqueEventDelegate`1 forThisDelegate) at GarageGames.Torque.T2D.T2DTileLayer.Dispose() at GarageGames.Torque.Core.Xml.TorqueSceneData._UnloadObjects(List`1 list) at GarageGames.Torque.Core.Xml.TorqueSceneData.Unload() at GarageGames.Torque.GameUtil.SceneLoader.Unload(TorqueSceneData scene) at GarageGames.Torque.GameUtil.SceneLoader.UnloadLastScene() at GarageGames.Torque.PlatformerDemo.Game.LoadInterLevel() in E:PlatformerDemoGameGame.cs:line 357 at GarageGames.Torque.PlatformerDemo.Components.Callers.InterLevelCallerComponent.ProcessTick(Move move, Single dt) in E:PlatformerDemoGameComponentsCallersInterLevelCallerComponent.cs:line 23 at GarageGames.Torque.Sim.ProcessList._TickObjects(Single tickSec) at GarageGames.Torque.Sim.ProcessList.AdvanceTick(Single floatMS) at GarageGames.Torque.XNA.TorqueEngineComponent._UpdateSim(String eventName, Single elapsed) at GarageGames.Torque.Core.TorqueEvent`1._Trigger(Delegate d) at GarageGames.Torque.Core.TorqueEventManager._TriggerEvent(TorqueEventBase ev) at GarageGames.Torque.Core.TorqueEventManager.MgrProcessEvents() at GarageGames.Torque.Core.TorqueEventManager.ProcessEvents() at GarageGames.Torque.XNA.TorqueEngineComponent.Update(GameTime gameTime) at Microsoft.Xna.Framework.Game.Update(GameTime gameTime) at GarageGames.Torque.PlatformerDemo.Game.Update(GameTime gameTime) in E:PlatformerDemoGameGame.cs:line 388 at Microsoft.Xna.Framework.Game.Tick() at Microsoft.Xna.Framework.Game.HostIdle(Object sender, EventArgs e) at Microsoft.Xna.Framework.GameHost.OnIdle() at Microsoft.Xna.Framework.WindowsGameHost.ApplicationIdle(Object sender, EventArgs e) at System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FDoIdle(Int32 grfidlef) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(Form mainForm) at Microsoft.Xna.Framework.WindowsGameHost.Run() at Microsoft.Xna.Framework.Game.Run() at GarageGames.Torque.PlatformerDemo.GameStarter.Main(String[] args) in E:PlatformerDemoGameMain.cs:line 11
#3
02/24/2010 (5:39 pm)
In T2DTileLayer try overriding the OnRegister() method and silencing the event from there instead of in Dispose().
#4
Am I suposed to add it in the first line of the method, after a specific line or anywhere?
02/24/2010 (6:31 pm)
When I do that (removing that line from Dispose and pasting it into OnRegister), the tilemap starts to disappear again when I minimize.Am I suposed to add it in the first line of the method, after a specific line or anywhere?
#5
02/25/2010 (9:30 am)
Ah sorry, typo... I meant OnUnregister()
#6
Thanks _a lot_!
This is the way it ended up:
02/25/2010 (10:15 am)
Working perfectly now :)Thanks _a lot_!
This is the way it ended up:
public T2DTileLayer()
{
TorqueEventManager.ListenEvents<bool>(GFXDevice.Instance.DeviceReset, OnDeviceReset);
Components.AddComponent(new T2DCollisionComponent());
Collision.InstallImage(new TileLayerCollisionImage());
}
public override void OnUnregister()
{
base.OnUnregister();
TorqueEventManager.SilenceEvents<bool>(GFXDevice.Instance.DeviceReset, OnDeviceReset);
} 
Torque Owner Duncan Colvin
Scroll down for the fix...