Terrain tile features.
All possible terrain tile features, some of them parameterized or dependent on outside coefficients, e.g., on the tile secrecy value.
triggered by ascending
triggered by descending
triggered by escaping
triggered by opening
triggered by closing
|Cause !(Effect Int)|
causes the effect when triggered
transitions to a tile of the group when triggered
actors can walk through
actors can see through
is lit with an ambient shine
may not be what it seems (clients only)
|Aura !(Effect Int)|
sustains the effect continuously, TODO
can never be excavated nor seen through
items can be generated there
actors and stairs can be generated there
is a (not hidden) door, stair, etc.
used for visible paths throughout the level
when hidden, looks as a tile of the group