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-{-# LANGUAGE RecordWildCards #-}
-{-# LANGUAGE GADTs           #-}
-{-# LANGUAGE TemplateHaskell #-}
---------------------------------------------------------------------------------
-module Xanthous.Generators
-  ( generate
-  , Generator(..)
-  , SGenerator(..)
-  , GeneratorInput(..)
-  , generateFromInput
-  , parseGeneratorInput
-  , showCells
-  , Level(..)
-  , levelWalls
-  , levelItems
-  , levelCreatures
-  , levelDoors
-  , levelCharacterPosition
-  , levelTutorialMessage
-  , levelExtra
-  , generateLevel
-  , levelToEntityMap
-  ) where
---------------------------------------------------------------------------------
-import           Xanthous.Prelude
-import           Data.Array.Unboxed
-import qualified Options.Applicative as Opt
-import           Control.Monad.Random
---------------------------------------------------------------------------------
-import qualified Xanthous.Generators.CaveAutomata as CaveAutomata
-import qualified Xanthous.Generators.Dungeon as Dungeon
-import           Xanthous.Generators.Util
-import           Xanthous.Generators.LevelContents
-import           Xanthous.Generators.Village as Village
-import           Xanthous.Data (Dimensions, Position'(Position), Position)
-import           Xanthous.Data.EntityMap (EntityMap, _EntityMap)
-import qualified Xanthous.Data.EntityMap as EntityMap
-import           Xanthous.Entities.Environment
-import           Xanthous.Entities.Item (Item)
-import           Xanthous.Entities.Creature (Creature)
-import           Xanthous.Game.State (SomeEntity(..))
-import           Linear.V2
---------------------------------------------------------------------------------
-
-data Generator
-  = CaveAutomata
-  | Dungeon
-  deriving stock (Show, Eq)
-
-data SGenerator (gen :: Generator) where
-  SCaveAutomata :: SGenerator 'CaveAutomata
-  SDungeon :: SGenerator 'Dungeon
-
-type family Params (gen :: Generator) :: Type where
-  Params 'CaveAutomata = CaveAutomata.Params
-  Params 'Dungeon = Dungeon.Params
-
-generate
-  :: RandomGen g
-  => SGenerator gen
-  -> Params gen
-  -> Dimensions
-  -> g
-  -> Cells
-generate SCaveAutomata = CaveAutomata.generate
-generate SDungeon = Dungeon.generate
-
-data GeneratorInput where
-  GeneratorInput :: forall gen. SGenerator gen -> Params gen -> GeneratorInput
-
-generateFromInput :: RandomGen g => GeneratorInput -> Dimensions -> g -> Cells
-generateFromInput (GeneratorInput sg ps) = generate sg ps
-
-parseGeneratorInput :: Opt.Parser GeneratorInput
-parseGeneratorInput = Opt.subparser
-  $ generatorCommand SCaveAutomata
-      "cave"
-      "Cellular-automata based cave generator"
-      CaveAutomata.parseParams
-  <> generatorCommand SDungeon
-      "dungeon"
-      "Classic dungeon map generator"
-      Dungeon.parseParams
-  where
-    generatorCommand sgen name desc parseParams =
-      Opt.command name
-        (Opt.info
-          (GeneratorInput <$> pure sgen <*> parseParams)
-          (Opt.progDesc desc)
-        )
-
-
-showCells :: Cells -> Text
-showCells arr =
-  let (V2 minX minY, V2 maxX maxY) = bounds arr
-      showCellVal True = "x"
-      showCellVal False = " "
-      showCell = showCellVal . (arr !)
-      row r = foldMap (showCell . (`V2` r)) [minX..maxX]
-      rows = row <$> [minY..maxY]
-  in intercalate "\n" rows
-
-cellsToWalls :: Cells -> EntityMap Wall
-cellsToWalls cells = foldl' maybeInsertWall mempty . assocs $ cells
-  where
-    maybeInsertWall em (pos@(V2 x y), True)
-      | not (surroundedOnAllSides pos) =
-        let x' = fromIntegral x
-            y' = fromIntegral y
-        in EntityMap.insertAt (Position x' y') Wall em
-    maybeInsertWall em _ = em
-    surroundedOnAllSides pos = numAliveNeighbors cells pos == 8
-
---------------------------------------------------------------------------------
-
-data Level = Level
-  { _levelWalls             :: !(EntityMap Wall)
-  , _levelDoors             :: !(EntityMap Door)
-  , _levelItems             :: !(EntityMap Item)
-  , _levelCreatures         :: !(EntityMap Creature)
-  , _levelTutorialMessage   :: !(EntityMap GroundMessage)
-  , _levelStaircases        :: !(EntityMap Staircase)
-  , _levelExtra             :: !(EntityMap SomeEntity) -- ^ TODO this is a bit of a hack...
-  , _levelCharacterPosition :: !Position
-  }
-  deriving stock (Generic)
-  deriving anyclass (NFData)
-makeLenses ''Level
-
-generateLevel
-  :: MonadRandom m
-  => SGenerator gen
-  -> Params gen
-  -> Dimensions
-  -> m Level
-generateLevel gen ps dims = do
-  rand <- mkStdGen <$> getRandom
-  let cells = generate gen ps dims rand
-      _levelWalls = cellsToWalls cells
-  village <- generateVillage cells gen
-  let _levelExtra = village
-  _levelItems <- randomItems cells
-  _levelCreatures <- randomCreatures cells
-  _levelDoors <- randomDoors cells
-  _levelCharacterPosition <- chooseCharacterPosition cells
-  let upStaircase = _EntityMap # [(_levelCharacterPosition, UpStaircase)]
-  downStaircase <- placeDownStaircase cells
-  let _levelStaircases = upStaircase <> downStaircase
-  _levelTutorialMessage <- tutorialMessage cells _levelCharacterPosition
-  pure Level {..}
-
-levelToEntityMap :: Level -> EntityMap SomeEntity
-levelToEntityMap level
-  = (SomeEntity <$> level ^. levelWalls)
-  <> (SomeEntity <$> level ^. levelDoors)
-  <> (SomeEntity <$> level ^. levelItems)
-  <> (SomeEntity <$> level ^. levelCreatures)
-  <> (SomeEntity <$> level ^. levelTutorialMessage)
-  <> (SomeEntity <$> level ^. levelStaircases)
-  <> (level ^. levelExtra)
-
-generateVillage
-  :: MonadRandom m
-  => Cells -- ^ Wall positions
-  -> SGenerator gen
-  -> m (EntityMap SomeEntity)
-generateVillage wallPositions SCaveAutomata = Village.fromCave wallPositions
-generateVillage _ _ = pure mempty