Terrains issues - IMPLEMENTED

[Savra]

Apparently some, if not all, flying units can pass over frozen water, also undead can build bone walls on frozen water as well.

I don't know if lava also blocks flying units as well.

Also the moats don't seem to work either as units can pass it like normal terrain but I think flying units can't cross or at least the elven dragon can't.

[makazuwr32]

Frozen river was planned to be passable freely for all flyers. For land units and water units speed must be reduced in half - unit with speed 6 can move only for 3 tiles on frozen river and with speed 1 can't move at all.

Only water-based buildings must be constructible on frozen river tiles.

As for lava - must be passable by all flyers and later by fire-based units who are immune to fire (fire elemental, fire demon, Efreet).

we did not touch moats and similar terraisns yet thus must be discussed.

[Savra]

I already did these including the moat.