There are many addons that display pitch, which is the angle at which you're moving up/down. Currently, there are only X and Z coordinates given to addons via the mapping functions, there is no Y coordinate. Also, from personal testing, there is no specific ceiling height globally across the game. It seems to change depending in which zone you're in and between these changes, there's a slanted collision plane (aka, invisible wall) to help transition between ceiling heights.
As far as auto-leveling, I've found addon code that achieves this supposedly by changing the pitch limit CVar. A couple other ways, if you land and take off without moving your pitch any, it resets to 0. The other way involves using click-to-move. If you right-click up in the sky in any direction, not hitting any objects or terrain, this will reset your pitch to 0 as well.
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WoWInterface AddOns
"All I want is a pretty girl, a decent meal, and the right to shoot lightning at fools."
-Anders (Dragon Age: Origins - Awakening)
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Last edited by SDPhantom : 04-26-11 at 08:09 PM.
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