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, 133 deletions

diff --git a/users/grfn/xanthous/src/Xanthous/Generators/LevelContents.hs b/users/grfn/xanthous/src/Xanthous/Generators/LevelContents.hs
deleted file mode 100644
index 8ebcc7f4da83..000000000000
--- a/users/grfn/xanthous/src/Xanthous/Generators/LevelContents.hs
+++ /dev/null
@@ -1,133 +0,0 @@
---------------------------------------------------------------------------------
-module Xanthous.Generators.LevelContents
-  ( chooseCharacterPosition
-  , randomItems
-  , randomCreatures
-  , randomDoors
-  , placeDownStaircase
-  , tutorialMessage
-  ) where
---------------------------------------------------------------------------------
-import           Xanthous.Prelude hiding (any, toList)
---------------------------------------------------------------------------------
-import           Control.Monad.Random
-import           Data.Array.IArray (amap, bounds, rangeSize, (!))
-import qualified Data.Array.IArray as Arr
-import           Data.Foldable (any, toList)
-import           Linear.V2
---------------------------------------------------------------------------------
-import           Xanthous.Generators.Util
-import           Xanthous.Random
-import           Xanthous.Data
-                 ( positionFromV2,  Position, _Position
-                 , rotations, arrayNeighbors, Neighbors(..)
-                 , neighborPositions
-                 )
-import           Xanthous.Data.EntityMap (EntityMap, _EntityMap)
-import           Xanthous.Entities.Raws (rawsWithType, RawType)
-import qualified Xanthous.Entities.Item as Item
-import           Xanthous.Entities.Item (Item)
-import qualified Xanthous.Entities.Creature as Creature
-import           Xanthous.Entities.Creature (Creature)
-import           Xanthous.Entities.Environment
-                 (GroundMessage(..), Door(..), unlockedDoor, Staircase(..))
-import           Xanthous.Messages (message_)
-import           Xanthous.Util.Graphics (circle)
---------------------------------------------------------------------------------
-
-chooseCharacterPosition :: MonadRandom m => Cells -> m Position
-chooseCharacterPosition = randomPosition
-
-randomItems :: MonadRandom m => Cells -> m (EntityMap Item)
-randomItems = randomEntities Item.newWithType (0.0004, 0.001)
-
-placeDownStaircase :: MonadRandom m => Cells -> m (EntityMap Staircase)
-placeDownStaircase cells = do
-  pos <- randomPosition cells
-  pure $ _EntityMap # [(pos, DownStaircase)]
-
-randomDoors :: MonadRandom m => Cells -> m (EntityMap Door)
-randomDoors cells = do
-  doorRatio <- getRandomR subsetRange
-  let numDoors = floor $ doorRatio * fromIntegral (length candidateCells)
-      doorPositions =
-        removeAdjacent . fmap positionFromV2 . take numDoors $ candidateCells
-      doors = zip doorPositions $ repeat unlockedDoor
-  pure $ _EntityMap # doors
-  where
-    removeAdjacent =
-      foldr (\pos acc ->
-               if pos `elem` (acc >>= toList . neighborPositions)
-               then acc
-               else pos : acc
-            ) []
-    candidateCells = filter doorable $ Arr.indices cells
-    subsetRange = (0.8 :: Double, 1.0)
-    doorable pos =
-      not (fromMaybe True $ cells ^? ix pos)
-      && any (teeish . fmap (fromMaybe True))
-        (rotations $ arrayNeighbors cells pos)
-    -- only generate doors at the *ends* of hallways, eg (where O is walkable,
-    -- X is a wall, and D is a door):
-    --
-    -- O O O
-    -- X D X
-    --   O
-    teeish (fmap not -> (Neighbors tl t tr l r _ b _ )) =
-      and [tl, t, tr, b] && (and . fmap not) [l, r]
-
-randomCreatures :: MonadRandom m => Cells -> m (EntityMap Creature)
-randomCreatures = randomEntities Creature.newWithType (0.0007, 0.002)
-
-tutorialMessage :: MonadRandom m
-  => Cells
-  -> Position -- ^ CharacterPosition
-  -> m (EntityMap GroundMessage)
-tutorialMessage cells characterPosition = do
-  let distance = 2
-  pos <- fmap (fromMaybe (error "No valid positions for tutorial message?"))
-        . choose . ChooseElement
-        $ accessiblePositionsWithin distance cells characterPosition
-  msg <- message_ ["tutorial", "message1"]
-  pure $ _EntityMap # [(pos, GroundMessage msg)]
-  where
-    accessiblePositionsWithin :: Int -> Cells -> Position -> [Position]
-    accessiblePositionsWithin dist valid pos =
-      review _Position
-      <$> filter
-            (\pt -> not $ valid ! (fromIntegral <$> pt))
-            (circle (pos ^. _Position) dist)
-
-randomEntities
-  :: forall entity raw m. (MonadRandom m, RawType raw)
-  => (raw -> entity)
-  -> (Float, Float)
-  -> Cells
-  -> m (EntityMap entity)
-randomEntities newWithType sizeRange cells =
-  case fromNullable $ rawsWithType @raw of
-    Nothing -> pure mempty
-    Just raws -> do
-      let len = rangeSize $ bounds cells
-      (numEntities :: Int) <-
-        floor . (* fromIntegral len) <$> getRandomR sizeRange
-      entities <- for [0..numEntities] $ const $ do
-        pos <- randomPosition cells
-        raw <- choose raws
-        let entity = newWithType raw
-        pure (pos, entity)
-      pure $ _EntityMap # entities
-
-randomPosition :: MonadRandom m => Cells -> m Position
-randomPosition = fmap positionFromV2 . choose . impureNonNull . cellCandidates
-
--- cellCandidates :: Cells -> Cells
-cellCandidates :: Cells -> Set (V2 Word)
-cellCandidates
-  -- find the largest contiguous region of cells in the cave.
-  = maximumBy (compare `on` length)
-  . fromMaybe (error "No regions generated! this should never happen.")
-  . fromNullable
-  . regions
-  -- cells ends up with true = wall, we want true = can put an item here
-  . amap not