Game.LambdaHack.Perception

Actors perceiving other actors and the dungeon level.

Documentation

type DungeonPerception = [(LevelId, Perception)]

The type representing the perception for all levels in the dungeon.

data Perception

The type representing the perception of all actors on the level.

Note: Heroes share visibility and only have separate reachability. The pplayer field must be void on all levels except where he resides. Right now, the field is used only for player-controlled monsters.

totalVisible :: Perception -> IntSet

The set of tiles visible by at least one hero.

debugTotalReachable :: Perception -> IntSet

For debug only: the set of tiles reachable (would be visible if lit) by at least one hero.

dungeonPerception :: COps -> State -> DungeonPerception

Calculate the perception of all actors on the level.

actorReachesLoc :: ActorId -> Point -> Perception -> Maybe ActorId -> Bool

Check whether a location is within the visually reachable area of the given actor (disregarding lighting). Defaults to false if the actor is not player-controlled (monster or hero).

actorReachesActor :: ActorId -> ActorId -> Point -> Point -> Perception -> Maybe ActorId -> Bool

Check whether an actor is within the visually reachable area of the given actor (disregarding lighting). Not quite correct if FOV not symmetric (e.g., Shadow). Defaults to false if neither actor is player-controlled.

actorSeesActor :: Ops TileKind -> Perception -> Level -> ActorId -> ActorId -> Point -> Point -> ActorId -> Bool

Whether an actor can see another. An approximation.