refactor(xanthous): Generators -> Generators.Level r/2655

I'm going to start adding generators for things like text soon, so it
makes sense to specifically sequester level generators as their own
thing

Change-Id: I175025375204fab7d75eba67dd06dab9bd2939d3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3201
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI

1 files changed, 0 insertions, 190 deletions

diff --git a/users/grfn/xanthous/src/Xanthous/Generators/Dungeon.hs b/users/grfn/xanthous/src/Xanthous/Generators/Dungeon.hs
deleted file mode 100644
index f30713ce1182..000000000000
--- a/users/grfn/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