Out of LoS terrain issues

[nckmccnnll]

"Terrain outside of vision not updating is fine when it's monsters opening doors and such, but it's a little strange when it's something you're doing such as firing stone to mud, earthquakes or destruction - the player knows the terrain changed but the game doesn't update it for you, the old black spaces was better in this regard. There are also situations where a monster will clearly pass through a door (viewable through ESP) but this won't be updated for you."
"More on terrain: if you detect items and then destruct, for example in a vault then the (now gone) items are stuck on the screen until you get into view, also blocking mapping from updating things correctly." - clouded

[nckmccnnll]

0342a885 makes terrain in the blast radius of destruction and earthquakes forgotten; this seems sensible, since everything in the radius is up for change. Stone to mud and door changes are left; they'll update if visible, but otherwise you don't know for sure that the terrain has changed (for example, a monster may have been in the way of the stone to mud).

[nckmccnnll]

Re-opening because of ​http://angband.oook.cz/forum/showpost.php?p=121455&postcount=106

[nckmccnnll]

Probable fix in 18cc9182, closing for now

[nckmccnnll]

Actually 53e39696