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, 220 deletions

diff --git a/users/grfn/xanthous/src/Xanthous/Generators/Util.hs b/users/grfn/xanthous/src/Xanthous/Generators/Util.hs
deleted file mode 100644
index 88aadd5aadd9..000000000000
--- a/users/grfn/xanthous/src/Xanthous/Generators/Util.hs
+++ /dev/null
@@ -1,220 +0,0 @@
-{-# LANGUAGE QuantifiedConstraints #-}
-{-# LANGUAGE AllowAmbiguousTypes #-}
---------------------------------------------------------------------------------
-module Xanthous.Generators.Util
-  ( MCells
-  , Cells
-  , CellM
-  , randInitialize
-  , initializeEmpty
-  , numAliveNeighborsM
-  , numAliveNeighbors
-  , fillOuterEdgesM
-  , cloneMArray
-  , floodFill
-  , regions
-  , fillAll
-  , fillAllM
-  , fromPoints
-  , fromPointsM
-  ) where
---------------------------------------------------------------------------------
-import           Xanthous.Prelude hiding (Foldable, toList, for_)
---------------------------------------------------------------------------------
-import           Data.Array.ST
-import           Data.Array.Unboxed
-import           Control.Monad.ST
-import           Control.Monad.Random
-import           Data.Monoid
-import           Data.Foldable (Foldable, toList, for_)
-import qualified Data.Set as Set
-import           Data.Semigroup.Foldable
-import           Linear.V2
---------------------------------------------------------------------------------
-import           Xanthous.Util (foldlMapM', maximum1, minimum1)
-import           Xanthous.Data (Dimensions, width, height)
---------------------------------------------------------------------------------
-
-type MCells s = STUArray s (V2 Word) Bool
-type Cells = UArray (V2 Word) Bool
-type CellM g s a = RandT g (ST s) a
-
-randInitialize :: RandomGen g => Dimensions -> Double -> CellM g s (MCells s)
-randInitialize dims aliveChance = do
-  res <- initializeEmpty dims
-  for_ [0..dims ^. width] $ \i ->
-    for_ [0..dims ^. height] $ \j -> do
-      val <- (>= aliveChance) <$> getRandomR (0, 1)
-      lift $ writeArray res (V2 i j) val
-  pure res
-
-initializeEmpty :: RandomGen g => Dimensions -> CellM g s (MCells s)
-initializeEmpty dims =
-  lift $ newArray (0, V2 (dims ^. width) (dims ^. height)) False
-
-numAliveNeighborsM
-  :: forall a i m
-  . (MArray a Bool m, Ix i, Integral i)
-  => a (V2 i) Bool
-  -> V2 i
-  -> m Word
-numAliveNeighborsM cells (V2 x y) = do
-  cellBounds <- getBounds cells
-  getSum <$> foldlMapM'
-    (fmap (Sum . fromIntegral . fromEnum) . boundedGet cellBounds)
-    neighborPositions
-
-  where
-    boundedGet :: (V2 i, V2 i) -> (Int, Int) -> m Bool
-    boundedGet (V2 minX minY, V2 maxX maxY) (i, j)
-      | x <= minX
-        || y <= minY
-        || x >= maxX
-        || y >= maxY
-      = pure True
-      | otherwise =
-        let nx = fromIntegral $ fromIntegral x + i
-            ny = fromIntegral $ fromIntegral y + j
-        in readArray cells $ V2 nx ny
-
-numAliveNeighbors
-  :: forall a i
-  . (IArray a Bool, Ix i, Integral i)
-  => a (V2 i) Bool
-  -> V2 i
-  -> Word
-numAliveNeighbors cells (V2 x y) =
-  let cellBounds = bounds cells
-  in getSum $ foldMap
-      (Sum . fromIntegral . fromEnum . boundedGet cellBounds)
-      neighborPositions
-
-  where
-    boundedGet :: (V2 i, V2 i) -> (Int, Int) -> Bool
-    boundedGet (V2 minX minY, V2 maxX maxY) (i, j)
-      | x <= minX
-        || y <= minY
-        || x >= maxX
-        || y >= maxY
-      = True
-      | otherwise =
-        let nx = fromIntegral $ fromIntegral x + i
-            ny = fromIntegral $ fromIntegral y + j
-        in cells ! V2 nx ny
-
-neighborPositions :: [(Int, Int)]
-neighborPositions = [(i, j) | i <- [-1..1], j <- [-1..1], (i, j) /= (0, 0)]
-
-fillOuterEdgesM :: (MArray a Bool m, Ix i) => a (V2 i) Bool -> m ()
-fillOuterEdgesM arr = do
-  (V2 minX minY, V2 maxX maxY) <- getBounds arr
-  for_ (range (minX, maxX)) $ \x -> do
-    writeArray arr (V2 x minY) True
-    writeArray arr (V2 x maxY) True
-  for_ (range (minY, maxY)) $ \y -> do
-    writeArray arr (V2 minX y) True
-    writeArray arr (V2 maxX y) True
-
-cloneMArray
-  :: forall a a' i e m.
-  ( Ix i
-  , MArray a e m
-  , MArray a' e m
-  , IArray UArray e
-  )
-  => a i e
-  -> m (a' i e)
-cloneMArray = thaw @_ @UArray <=< freeze
-
---------------------------------------------------------------------------------
-
--- | Flood fill a cell array starting at a point, returning a list of all the
--- (true) cell locations reachable from that point
-floodFill :: forall a i.
-            ( IArray a Bool
-            , Ix i
-            , Enum i
-            , Bounded i
-            , Eq i
-            )
-          => a (V2 i) Bool -- ^ array
-          -> (V2 i)        -- ^ position
-          -> Set (V2 i)
-floodFill = go mempty
-  where
-    go :: Set (V2 i) -> a (V2 i) Bool -> (V2 i) -> Set (V2 i)
-    go res arr@(bounds -> arrBounds) idx@(V2 x y)
-      | not (inRange arrBounds idx) =  res
-      | not (arr ! idx) =  res
-      | otherwise =
-        let neighbors
-              = filter (inRange arrBounds)
-              . filter (/= idx)
-              . filter (`notMember` res)
-              $ V2
-              <$> [(if x == minBound then x else pred x)
-                   ..
-                   (if x == maxBound then x else succ x)]
-              <*> [(if y == minBound then y else pred y)
-                   ..
-                   (if y == maxBound then y else succ y)]
-        in foldl' (\r idx' ->
-                     if arr ! idx'
-                     then r <> (let r' = r & contains idx' .~ True
-                               in r' `seq` go r' arr idx')
-                     else r)
-           (res & contains idx .~ True) neighbors
-{-# SPECIALIZE floodFill :: UArray (V2 Word) Bool -> (V2 Word) -> Set (V2 Word) #-}
-
--- | Gives a list of all the disconnected regions in a cell array, represented
--- each as lists of points
-regions :: forall a i.
-          ( IArray a Bool
-          , Ix i
-          , Enum i
-          , Bounded i
-          , Eq i
-          )
-        => a (V2 i) Bool
-        -> [Set (V2 i)]
-regions arr
-  | Just firstPoint <- findFirstPoint arr =
-      let region = floodFill arr firstPoint
-          arr' = fillAll region arr
-      in region : regions arr'
-  | otherwise = []
-  where
-    findFirstPoint :: a (V2 i) Bool -> Maybe (V2 i)
-    findFirstPoint = fmap fst . headMay . filter snd . assocs
-{-# SPECIALIZE regions :: UArray (V2 Word) Bool -> [Set (V2 Word)] #-}
-
-fillAll :: (IArray a Bool, Ix i, Foldable f) => f i -> a i Bool -> a i Bool
-fillAll ixes a = accum (const fst) a $ (, (False, ())) <$> toList ixes
-
-fillAllM :: (MArray a Bool m, Ix i, Foldable f) => f i -> a i Bool -> m ()
-fillAllM ixes a = for_ ixes $ \i -> writeArray a i False
-
-fromPoints
-  :: forall a f i.
-    ( IArray a Bool
-    , Ix i
-    , Functor f
-    , Foldable1 f
-    )
-  => f (i, i)
-  -> a (i, i) Bool
-fromPoints points =
-  let pts = Set.fromList $ toList points
-      dims = ( (minimum1 $ fst <$> points, minimum1 $ snd <$> points)
-             , (maximum1 $ fst <$> points, maximum1 $ snd <$> points)
-             )
-  in array dims $ range dims <&> \i -> (i, i `member` pts)
-
-fromPointsM
-  :: (MArray a Bool m, Ix i, Element f ~ i, MonoFoldable f)
-  => NonNull f
-  -> m (a i Bool)
-fromPointsM points = do
-  arr <- newArray (minimum points, maximum points) False
-  fillAllM (otoList points) arr
-  pure arr