Game.LambdaHack.FOV.Digital

DFOV (Digital Field of View) implemented according to specification at http://roguebasin.roguelikedevelopment.org/index.php?title=Digital_field_of_view_implementation. This fast version of the algorithm, based on PFOV, has AFAIK never been described nor implemented before.

Documentation

scan

Arguments

:: Distance

visiblity radius

-> (Bump -> Bool)

clear tile predicate

-> [Bump]

Calculates the list of tiles, in Bump coordinates, visible from (0, 0), within the given sight range.