Options for FLOORITEM_HOLDER

[R.K.]

There are a few behaviors I can think of that would make nice options for holder objects.

No turning - but not necessarily restricting movement off the tile
Restricted facing - the party might be restricted from turning to face specific directions (such as only north or east)
Restricted off-tile movement - same idea, with the party prevented from leaving the tile in some directions (such as only north or south along a corridor)
Opbys - spells could be temporarily frozen, monsters could be blocked without teleporters (and without extra movement sounds), etc.

[Sophia]

The first three can all already be done with teleporters, and would make holders complicated enough that perhaps the added complexity of using teleporters is not a huge problem.

I like the idea of adding opbys, though.