#49 Ice Elevation Calculated Wrong

[Tuncay Goncuoglu]

Following is from +bug 909 on 3030:

This is an observation of me standing at 5 5 on map
wyv.gulch.When I target the hex 4 8 I get the error
saying there is no los while hexes in between are lvl 0
plain and lvl 1 ice.After I break the ice at 4 7 and that
hex turned into water I could fire as I should be able to.
This takes me to the conclusion that ice elevation is
calculated as positive not 0 like water as it should
be.In other words a lvl 9 ice hex is not a lvl 9 deep lake
that has an ice layer on surface - instead it is a lvl 9
tower made of ice. Makes me remember Die Another
Day.