Seriously. Why was support for AABBs dropped? I'm trying to iron out the collision bugs in G.R.U.N.T.S, but they are unstoppable. Ellipsoids are incredibly unpredictable. They get stuck so easily that you have to wall up your entire level with invisible borders, or the next thing you know, your player entity is trying to climb into that mouse hole!

The Quake engines still use the AABB system for a reason. It's reliable, easy to manage, and accurate. You can't get your stomach caught in little holes in the wall because your BBox sticks out a little in the middle, and size adjustments can be made on the fly to easily accomodate features like smoothly walking up and down stairs and ramps.

So why has the AABB system been replaced with this repulsive OBB system?!

I hate it, too. I spent so much time on avoiding ellipsoid collisions and trying to (re)create bounding box movement, esp. for platformers.

EDIT: The rest of the collision system is awesome (push, group, c_ignore, (FLAG2)).

I standard wall up my entire level. Collision has always been flawed.

This is a rant I can support from all of my heart

AABB was perfectly usable for most games. I always thought that the latest A7 still had AABB because of the naming of "USE_AABB", but recently found it it uses ellipsoids instead.

So I took the only reasonable step for my game "Survive!":

I programmed my own AABB collision detection in lite-c. Its highly unoptimized but it works for the super small levels I have, and it includes the EVENT_ENTITY.
Its missing any kind of level-block collision though, so its worthless for you.

Superku, those features you mentioned are indeed nice, but collision group support is a very new thing. It was even worse before, trying to get c_trace and c_move to ignore a certain group of entites was a pain.


I'm having huge collision problems with my camera. I have a sphere model around it and I'm trying to use this to keep the cam from going through objects. Sometimes this looks horrible... bouncing around, gliding too fast...

I hate, really hate c_move
I'm currently trying to make workaround for ellipsoid problem...
But it sucks... Tried to use USE_AABB but I can't really see any differences, may be I got some errors...
OBB SUCK! Why they stoped using AABB?!

The new collision system using Nvidia Physix shoulkd solve all collision problems
Like Unity using collision engine for all collision managment !

Why does the code for using simple Physix collisions takes so
much time to be made for A8 ???

Even beginner can make Irrlicht engine use collision engine
in some hour with the tutorial !!

No time to waste !

No time to waste writing a tutorial or no time to waste posting one liners in a forum?