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The collision scheme of the v12 engine

by Joshua "The Power Nap" Taylor · in Torque Game Engine · 06/04/2001 (4:07 pm) · 7 replies

Hey,

I'm new here, and interested in the v12 engine. I was wondering if the v12 used axis-aligned bounding boxes for collision, or if it used oriented bounding boxes. This is very important for the type of game my crew and I intend to create.

Thanx in advance.
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Torque 3D Owner Brian Smith
#1
06/04/2001 (4:27 pm)
I'm sure that regardless of what the engine uses, it would be a relatively trivial task to make alterations - especially one such as going from AABB to OOBB.

Torque Owner Tim Gift
#2
06/06/2001 (8:46 pm)
The V12 uses a hybrid collision system. Some objects do use an OBB, other parts are hashed 2d arrays, some objects use GJK to determin contact points, etc.

Torque 3D Owner Joshua "The Power Nap" Taylor
#3
06/07/2001 (3:28 pm)
This might be stuiped of me, but what is GJK? Is that the plane penitration method (the plane equation and the cross product)?

Robert
#4
06/08/2001 (12:26 am)
I'm glad someone asked that, I have been meaning to look it up myself and haven't got around to it.

Torque Owner Tim Gift
#5
06/08/2001 (1:55 pm)
You can search the resource engine: GJK. GJK is the Gilbert-Johnson-Keerthi algorithim for computing the distance between convex objects.

Torque 3D Owner Joshua "The Power Nap" Taylor
#6
06/20/2001 (10:11 am)
Just curious,

But does the v12 use different collision schemes according to what's being tested? Like does it use GJK for object to world collisions and sphere/OBB's for object to object collisions?

Torque Owner Tim Gift
#7
06/25/2001 (9:40 am)
Different objects use different collision schemes. The vehicles are the ones using GJK, but since players are basically constrained boxes, they use a different approach, etc.