PhysX

I have integrated a PhysX framework in TGE. I have the default TGE TerrainBlock loading and can drop a PhysX box or sphere shape on the terrain and watch them interact.

The integration was done in SceneObject, where I added a static member class which handles initialization of the PhysX SDK. The PhysXSDK class also holds a 'default' PhysXScene base class pointer that handles the basics of a PhysX scene, so all sceneobjects can use the default PhysX scene, and/or another dynamic PhysX scene, as well as adding themselfs to the TGE scenegraph. My demo default scene, derived from PhysXScene, handles creating the PhysX version of the TGE TerrainBlock.

I've also created dynamic PhysX scene support, so additional physx scenes can be scoped as needed in an environment.

On to integrating Interiors. After that, I'll add the majority of the stock TGE demo game classes.. Player, Item, Projectile, Explosion, etc. so they can interact in a PhysXScene as well.

This implementation coexists with TGE's container/convex collision system, but runs asynchronously, starting and finishing in the advanceObjects method.