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Switching t2dSceneObject to a new t2dSceneGraph

by Chad Kilgore · in Torque Game Builder · 08/08/2009 (4:33 pm) · 5 replies

I'm working on a trigger behavior to move the PC from his current scenegraph to a new scenegraph. However, when I remove the PC from scene A and add it to scene B, TGB crashes.

function LevelSwitchBehavior::onEnter(%this, %object)
{
   if (%object != $Player)
      return;
   
   if (!isObject(SceneConstant.StreamLevel))
      return;
   
   if (SceneConstant.StreamLevel.Level $= "")
      return;
   
   SceneConstant.ActiveLevel = SceneConstant.StreamLevel;
   SceneConstant.StreamLevel = $Player.SceneGraph;

   $Player.removeFromScene();
   $Player.addToScene(SceneConstant.ActiveLevel.getSceneGraph());
}

SceneConstant is a persistent t2dSceneWindow that contains references to 2 other t2dSceneWindows: ActiveLevel and StreamLevel.

Has anybody successfully moved an object from one SceneGraph to another? How did you do this without getting this crash? Thanks.
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Torque 3D Owner Chad Kilgore
#1
08/09/2009 (2:38 pm)
I tested the removeFromScene and addToScene code to move a test object from one scene to another. It worked fine, granted I had to reposition the object to see it but it worked. When I move the Player by hand, it still crashes. I am very confused.

I am using the PSK. I added:
function PlayerClass::onAddToScene(%this, %scenegraph)
{
   if (isObject($Player))
      return;

   ...
}
So not to re-register custom states.

Associate Phillip O'Shea
Violent Tulip
#2
08/09/2009 (3:56 pm)
When you move an object to another scene, you must reset its position as you have found out. The reason is that the object isn't placed into a "bin" when it is first added.

You can always do this:
function t2dSceneObject::setSceneGraph( %this, %sceneGraph )
{
    // Using this field will do some funky stuff in the background
    // to help with the move.
    %this.SceneGraph = %sceneGraph;

    // Reset Object.
    %this.setPosition( %this.Position );
}
Give that a wack.

Torque 3D Owner Chad Kilgore
#3
08/09/2009 (4:59 pm)
I gave it a wack. The Player really does not like being moved into another SceneGraph. I've dismounted the camera from the Player and no other entities are mounted to it and it still crashes. It works for all other entities other than the Player.

Torque 3D Owner Chad Kilgore
#4
08/10/2009 (5:40 am)
I take my previous statement back. t2dSceneObject::setSceneGraph does *not* work with every entity other than the Player. It does not work with another pskActor entity. I tried moving a Drill into a different SceneGraph and the system crashed again. ...At least it is slowly getting narrowed down.

Torque Owner Bruno Campolo
#5
04/28/2010 (12:46 pm)
I'm having this problem as well. Chad did you ever find a solution?