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Diffstat (limited to 'users/glittershark/xanthous/src/Xanthous/Generators/Dungeon.hs')
| -rw-r--r-- | users/glittershark/xanthous/src/Xanthous/Generators/Dungeon.hs | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/users/glittershark/xanthous/src/Xanthous/Generators/Dungeon.hs b/users/glittershark/xanthous/src/Xanthous/Generators/Dungeon.hs deleted file mode 100644 index f30713ce11..0000000000 --- a/users/glittershark/xanthous/src/Xanthous/Generators/Dungeon.hs +++ /dev/null @@ -1,190 +0,0 @@ -{-# LANGUAGE TemplateHaskell #-} --------------------------------------------------------------------------------- -module Xanthous.Generators.Dungeon - ( Params(..) - , defaultParams - , parseParams - , generate - ) where --------------------------------------------------------------------------------- -import Xanthous.Prelude hiding ((:>)) --------------------------------------------------------------------------------- -import Control.Monad.Random -import Data.Array.ST -import Data.Array.IArray (amap) -import Data.Stream.Infinite (Stream(..)) -import qualified Data.Stream.Infinite as Stream -import qualified Data.Graph.Inductive.Graph as Graph -import Data.Graph.Inductive.PatriciaTree -import qualified Data.List.NonEmpty as NE -import Data.Maybe (fromJust) -import Linear.V2 -import Linear.Metric -import qualified Options.Applicative as Opt --------------------------------------------------------------------------------- -import Xanthous.Random -import Xanthous.Data hiding (x, y, _x, _y, edges) -import Xanthous.Generators.Util -import Xanthous.Util.Graphics (delaunay, straightLine) -import Xanthous.Util.Graph (mstSubGraph) --------------------------------------------------------------------------------- - -data Params = Params - { _numRoomsRange :: (Word, Word) - , _roomDimensionRange :: (Word, Word) - , _connectednessRatioRange :: (Double, Double) - } - deriving stock (Show, Eq, Ord, Generic) -makeLenses ''Params - -defaultParams :: Params -defaultParams = Params - { _numRoomsRange = (6, 8) - , _roomDimensionRange = (3, 12) - , _connectednessRatioRange = (0.1, 0.15) - } - -parseParams :: Opt.Parser Params -parseParams = Params - <$> parseRange - "num-rooms" - "number of rooms to generate in the dungeon" - "ROOMS" - (defaultParams ^. numRoomsRange) - <*> parseRange - "room-size" - "size in tiles of one of the sides of a room" - "TILES" - (defaultParams ^. roomDimensionRange) - <*> parseRange - "connectedness-ratio" - ( "ratio of edges from the delaunay triangulation to re-add to the " - <> "minimum-spanning-tree") - "RATIO" - (defaultParams ^. connectednessRatioRange) - <**> Opt.helper - where - parseRange name desc metavar (defMin, defMax) = - (,) - <$> Opt.option Opt.auto - ( Opt.long ("min-" <> name) - <> Opt.value defMin - <> Opt.showDefault - <> Opt.help ("Minimum " <> desc) - <> Opt.metavar metavar - ) - <*> Opt.option Opt.auto - ( Opt.long ("max-" <> name) - <> Opt.value defMax - <> Opt.showDefault - <> Opt.help ("Maximum " <> desc) - <> Opt.metavar metavar - ) - -generate :: RandomGen g => Params -> Dimensions -> g -> Cells -generate params dims gen - = amap not - $ runSTUArray - $ fmap fst - $ flip runRandT gen - $ generate' params dims - --------------------------------------------------------------------------------- - -generate' :: RandomGen g => Params -> Dimensions -> CellM g s (MCells s) -generate' params dims = do - cells <- initializeEmpty dims - rooms <- genRooms params dims - for_ rooms $ fillRoom cells - - let fullRoomGraph = delaunayRoomGraph rooms - mst = mstSubGraph fullRoomGraph - mstEdges = Graph.edges mst - nonMSTEdges = filter (\(n₁, n₂, _) -> (n₁, n₂) `notElem` mstEdges) - $ Graph.labEdges fullRoomGraph - - reintroEdgeCount <- floor . (* fromIntegral (length nonMSTEdges)) - <$> getRandomR (params ^. connectednessRatioRange) - let reintroEdges = take reintroEdgeCount nonMSTEdges - corridorGraph = Graph.insEdges reintroEdges mst - - corridors <- traverse - ( uncurry corridorBetween - . over both (fromJust . Graph.lab corridorGraph) - ) $ Graph.edges corridorGraph - - for_ (join corridors) $ \pt -> lift $ writeArray cells pt True - - pure cells - -type Room = Box Word - -genRooms :: MonadRandom m => Params -> Dimensions -> m [Room] -genRooms params dims = do - numRooms <- fromIntegral <$> getRandomR (params ^. numRoomsRange) - subRand . fmap (Stream.take numRooms . removeIntersecting []) . infinitely $ do - roomWidth <- getRandomR $ params ^. roomDimensionRange - roomHeight <- getRandomR $ params ^. roomDimensionRange - xPos <- getRandomR (0, dims ^. width - roomWidth) - yPos <- getRandomR (0, dims ^. height - roomHeight) - pure Box - { _topLeftCorner = V2 xPos yPos - , _dimensions = V2 roomWidth roomHeight - } - where - removeIntersecting seen (room :> rooms) - | any (boxIntersects room) seen - = removeIntersecting seen rooms - | otherwise - = room :> removeIntersecting (room : seen) rooms - streamRepeat x = x :> streamRepeat x - infinitely = sequence . streamRepeat - -delaunayRoomGraph :: [Room] -> Gr Room Double -delaunayRoomGraph rooms = - Graph.insEdges edges . Graph.insNodes nodes $ Graph.empty - where - edges = map (\((n₁, room₁), (n₂, room₂)) -> (n₁, n₂, roomDist room₁ room₂)) - . over (mapped . both) snd - . delaunay @Double - . NE.fromList - . map (\p@(_, room) -> (boxCenter $ fromIntegral <$> room, p)) - $ nodes - nodes = zip [0..] rooms - roomDist = distance `on` (boxCenter . fmap fromIntegral) - -fillRoom :: MCells s -> Room -> CellM g s () -fillRoom cells room = - let V2 posx posy = room ^. topLeftCorner - V2 dimx dimy = room ^. dimensions - in for_ [posx .. posx + dimx] $ \x -> - for_ [posy .. posy + dimy] $ \y -> - lift $ writeArray cells (V2 x y) True - -corridorBetween :: MonadRandom m => Room -> Room -> m [V2 Word] -corridorBetween originRoom destinationRoom - = straightLine <$> origin <*> destination - where - origin = choose . NE.fromList =<< originEdge - destination = choose . NE.fromList =<< destinationEdge - originEdge = pickEdge originRoom originCorner - destinationEdge = pickEdge destinationRoom destinationCorner - pickEdge room corner = choose . over both (boxEdge room) $ cornerEdges corner - originCorner = - case ( compare (originRoom ^. topLeftCorner . _x) - (destinationRoom ^. topLeftCorner . _x) - , compare (originRoom ^. topLeftCorner . _y) - (destinationRoom ^. topLeftCorner . _y) - ) of - (LT, LT) -> BottomRight - (LT, GT) -> TopRight - (GT, LT) -> BottomLeft - (GT, GT) -> TopLeft - - (EQ, LT) -> BottomLeft - (EQ, GT) -> TopRight - (GT, EQ) -> TopLeft - (LT, EQ) -> BottomRight - (EQ, EQ) -> TopLeft -- should never happen - - destinationCorner = opposite originCorner |