Game.LambdaHack.Level

Inhabited dungeon levels and the operations to query and change them as the game progresses.

The Level type and its components

type ActorDict = IntMap Actor

All actors on the level, indexed by actor identifier.

type InvDict = IntMap [Item]

Items carried by actors, indexed by actor identifier.

type SmellMap = IntMap SmellTime

Current smell on map tiles.

type SecretMap = IntMap SecretTime

Current secrecy value on map tiles.

type ItemMap = IntMap ([Item], [Item])

Actual and remembered item lists on map tiles.

type TileMap = Array Point TileKind

Tile kinds on the map.

data Level

A single, inhabited dungeon level.

Constructors

Level

Fields

lactor :: ActorDict

all actors on the level

linv :: InvDict

items belonging to actors

lxsize :: X

width of the level

lysize :: Y

height of the level

lsmell :: SmellMap

smells

lsecret :: SecretMap

secrecy values

litem :: ItemMap

items on the ground

lmap :: TileMap

map tiles

lrmap :: TileMap

remembered map tiles

ldesc :: String

level description for the player

lmeta :: String

debug information from cave generation

lstairs :: (Point, Point)

destination of the (up, down) stairs

ltime :: Time

date of the last activity on the level

lclear :: Int

total number of clear tiles

lseen :: Int

number of clear tiles already seen

Instances

Show Level

Binary Level

Level update

updateActorDict :: (ActorDict -> ActorDict) -> Level -> Level

Update the hero and monster maps.

updateInv :: (InvDict -> InvDict) -> Level -> Level

Update the hero items and monster items maps.

updateSmell :: (SmellMap -> SmellMap) -> Level -> Level

Update the smell map.

updateIMap :: (ItemMap -> ItemMap) -> Level -> Level

Update the items on the ground map.

updateLMap :: (TileMap -> TileMap) -> Level -> Level

Update the tile and remembered tile maps.

updateLRMap :: (TileMap -> TileMap) -> Level -> Level

Update the tile and remembered tile maps.

dropItemsAt :: [Item] -> Point -> Level -> Level

Place all items on the list at a location on the level.

Level query

at :: Level -> Point -> Id TileKind

Query for actual and remembered tile kinds on the map.

rememberAt :: Level -> Point -> Id TileKind

Query for actual and remembered tile kinds on the map.

atI :: Level -> Point -> [Item]

Query for actual and remembered items on the ground.

rememberAtI :: Level -> Point -> [Item]

Query for actual and remembered items on the ground.

accessible :: COps -> Level -> Point -> Point -> Bool

Check whether one location is accessible from another, using the formula from the standard ruleset.

openable :: Ops TileKind -> Level -> SecretTime -> Point -> Bool

Check whether the location contains a door of secrecy lower than k and that can be opened according to the standard ruleset.

findLoc :: TileMap -> (Point -> Id TileKind -> Bool) -> Rnd Point

Find a random location on the map satisfying a predicate.

findLocTry

Arguments

:: Int

the number of tries

-> TileMap

look up in this map

-> [Point -> Id TileKind -> Bool]

predicates to satisfy

-> Rnd Point

Try to find a random location on the map satisfying the conjunction of the list of predicates. If the premitted number of attempts is not enough, try again the same number of times without the first predicate, then without the first two, etc., until only one predicate remains, at which point try as many times, as needed.