Eliminate dynamic capsule wobble. Instead introduce a small, fixed
tilt, and allow the tilt to rotate with the avatar while moving; the
tilt always faces away from the direction of avatar movement. The
rotation while moving should eliminate direction-dependent behavior
(e.g. only being able to climb on top of prims from certain directions).
Falling animation is still too frequently invoked.
Ideally the tilt should be completely eliminated, but doing so
currently causes the avatar to fall through the terrain.
* This also contains some inactive preliminary code for disconnecting combined regions that will be used to make one root region a virtual region of a new root region.
* Test for prim obstructions between the avatar and camera. If there are obstructions, inform the client to move the camera closer. This makes it so that walls and objects don't obstruct your view while you're moving around. Try walking inside a hollowed tori. You'll see how much easier it is now because your camera automatically moves closer so you can still see.
* Created a way to know if the user's camera is alt + cammed or just following the avatar.
* Changes IClientAPI interface by adding SendCameraConstraint(Vector4 CameraConstraint)
This fix re-introduces a small tilt into the capsule to prevent
avatar falling through terrain. Re-introduction of the tilt means
that some direction-dependent behavior when walking over prims, but
I have tried to minimize this.
Additionally this commit allows the capsule to wobble slightly when
being pushed around the terrain. This should make walking over prims
easier, as the capsule can wobble and glide diagonally over the prim's
edge, instead of rigidly being stopped vertically against the prim's
face.
Set av_capsule_tilted to false in opensim.ini. Default is true, so there is
no change in avatar behavior (and no breaking of existing content which
relies on the tilted capsule).
This commit straightens up the avatar capsule so it behaves consistently
(e.g. same collision behavior against prims regardless of which direction
the avatar is coming from; ability to fit through narrow doorways).
Please note this introduces other side effects which have not been fixed.
In particular:
* The avatar frequently falls through the terrain if it is not flat, though
the avatar behaves pretty well on flat terrain. This requires investigation
of the ode terrain collider.
* The apparent foot position of the avatar with respect to the ground
is changed. This requires investigation of the avatar height/capsule height.
Please consider this as work in progress.
Eat collision errors --- NOTE: this fix might be naive, it seems to
have helped us getting to 81 avatars (whereas we'd crash with 20
before), but it sure would benefit from some check-over by a person
skilled in the art of ODE physics.
