refactor(users/glittershark): Rename to grfn r/2485

Rename my //users directory and all places that refer to glittershark to
grfn, including nix references and documentation.

This may require some extra attention inside of gerrit's database after
it lands to allow me to actually push things.

Change-Id: I4728b7ec2c60024392c1c1fa6e0d4a59b3e266fa
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2933
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: lukegb <lukegb@tvl.fyi>
Reviewed-by: glittershark <grfn@gws.fyi>

1 files changed, 469 insertions, 0 deletions

diff --git a/users/grfn/xanthous/src/Xanthous/App.hs b/users/grfn/xanthous/src/Xanthous/App.hs
new file mode 100644
index 000000000000..9091961b725c
--- /dev/null
+++ b/users/grfn/xanthous/src/Xanthous/App.hs
@@ -0,0 +1,469 @@
+{-# LANGUAGE UndecidableInstances #-}
+{-# LANGUAGE RecordWildCards      #-}
+--------------------------------------------------------------------------------
+module Xanthous.App
+  ( makeApp
+  , RunType(..)
+  ) where
+--------------------------------------------------------------------------------
+import           Xanthous.Prelude
+import           Brick hiding (App, halt, continue, raw)
+import qualified Brick
+import           Graphics.Vty.Attributes (defAttr)
+import           Graphics.Vty.Input.Events (Event(EvKey))
+import           Control.Monad.State (get, gets)
+import           Control.Monad.State.Class (modify)
+import           Data.Aeson (object, ToJSON)
+import qualified Data.Aeson as A
+import qualified Data.Vector as V
+import           System.Exit
+import           System.Directory (doesFileExist)
+import           Data.List.NonEmpty (NonEmpty(..))
+--------------------------------------------------------------------------------
+import           Xanthous.App.Common
+import           Xanthous.App.Time
+import           Xanthous.App.Prompt
+import           Xanthous.App.Autocommands
+import           Xanthous.Command
+import           Xanthous.Data
+                 ( move
+                 , Dimensions'(Dimensions)
+                 , positioned
+                 , position
+                 , Position
+                 , (|*|)
+                 )
+import           Xanthous.Data.App (ResourceName, Panel(..), AppEvent(..))
+import qualified Xanthous.Data.EntityMap as EntityMap
+import           Xanthous.Data.Levels (prevLevel, nextLevel)
+import qualified Xanthous.Data.Levels as Levels
+import           Xanthous.Data.Entities (blocksObject)
+import           Xanthous.Game
+import           Xanthous.Game.State
+import           Xanthous.Game.Env
+import           Xanthous.Game.Draw (drawGame)
+import           Xanthous.Game.Prompt
+import qualified Xanthous.Messages as Messages
+import           Xanthous.Random
+import           Xanthous.Util (removeVectorIndex)
+import           Xanthous.Util.Inflection (toSentence)
+--------------------------------------------------------------------------------
+import qualified Xanthous.Entities.Character as Character
+import           Xanthous.Entities.Character hiding (pickUpItem)
+import           Xanthous.Entities.Item (Item)
+import qualified Xanthous.Entities.Item as Item
+import           Xanthous.Entities.Creature (Creature)
+import qualified Xanthous.Entities.Creature as Creature
+import           Xanthous.Entities.Environment
+                 (Door, open, closed, locked, GroundMessage(..), Staircase(..))
+import           Xanthous.Entities.RawTypes
+                 ( edible, eatMessage, hitpointsHealed
+                 , attackMessage
+                 )
+import           Xanthous.Generators
+import qualified Xanthous.Generators.CaveAutomata as CaveAutomata
+import qualified Xanthous.Generators.Dungeon as Dungeon
+--------------------------------------------------------------------------------
+
+type App = Brick.App GameState AppEvent ResourceName
+
+data RunType = NewGame | LoadGame
+  deriving stock (Eq)
+
+makeApp :: GameEnv -> RunType -> IO App
+makeApp env rt = pure $ Brick.App
+  { appDraw = drawGame
+  , appChooseCursor = const headMay
+  , appHandleEvent = \game event -> runAppM (handleEvent event) env game
+  , appStartEvent = case rt of
+      NewGame -> runAppM (startEvent >> get) env
+      LoadGame -> pure
+  , appAttrMap = const $ attrMap defAttr []
+  }
+
+runAppM :: AppM a -> GameEnv -> GameState -> EventM ResourceName a
+runAppM appm ge = fmap fst . runAppT appm ge
+
+startEvent :: AppM ()
+startEvent = do
+  initLevel
+  modify updateCharacterVision
+  use (character . characterName) >>= \case
+    Nothing -> prompt_ @'StringPrompt ["character", "namePrompt"] Uncancellable
+      $ \(StringResult s) -> do
+        character . characterName ?= s
+        say ["welcome"] =<< use character
+    Just n -> say ["welcome"] $ object [ "characterName" A..= n ]
+
+initLevel :: AppM ()
+initLevel = do
+  level <- genLevel 0
+  entities <>= levelToEntityMap level
+  characterPosition .= level ^. levelCharacterPosition
+
+--------------------------------------------------------------------------------
+
+handleEvent :: BrickEvent ResourceName AppEvent -> AppM (Next GameState)
+handleEvent ev = use promptState >>= \case
+  NoPrompt -> handleNoPromptEvent ev
+  WaitingPrompt msg pr -> handlePromptEvent msg pr ev
+
+
+handleNoPromptEvent :: BrickEvent ResourceName AppEvent -> AppM (Next GameState)
+handleNoPromptEvent (VtyEvent (EvKey k mods))
+  | Just command <- commandFromKey k mods
+  = do messageHistory %= nextTurn
+       cancelAutocommand
+       handleCommand command
+handleNoPromptEvent (AppEvent AutoContinue) = do
+  preuse (autocommand . _ActiveAutocommand . _1) >>= traverse_ autoStep
+  continue
+handleNoPromptEvent _ = continue
+
+handleCommand :: Command -> AppM (Next GameState)
+handleCommand Quit = confirm_ ["quit", "confirm"] (liftIO exitSuccess) >> continue
+handleCommand (Move dir) = do
+  newPos <- uses characterPosition $ move dir
+  collisionAt newPos >>= \case
+    Nothing -> do
+      characterPosition .= newPos
+      stepGameBy =<< uses (character . speed) (|*| 1)
+      describeEntitiesAt newPos
+    Just Combat -> attackAt newPos
+    Just Stop -> pure ()
+  continue
+
+handleCommand PickUp = do
+  pos <- use characterPosition
+  uses entities (entitiesAtPositionWithType @Item pos) >>= \case
+    [] -> say_ ["pickUp", "nothingToPickUp"]
+    [item] -> pickUpItem item
+    items' ->
+      menu_ ["pickUp", "menu"] Cancellable (entityMenu_ items')
+      $ \(MenuResult item) -> pickUpItem item
+  continue
+  where
+    pickUpItem (itemID, item) = do
+      character %= Character.pickUpItem item
+      entities . at itemID .= Nothing
+      say ["pickUp", "pickUp"] $ object [ "item" A..= item ]
+      stepGameBy 100 -- TODO
+
+handleCommand Drop = do
+  selectItemFromInventory_ ["drop", "menu"] Cancellable id
+    (say_ ["drop", "nothing"])
+    $ \(MenuResult item) -> do
+      entitiesAtCharacter %= (SomeEntity item <|)
+      say ["drop", "dropped"] $ object [ "item" A..= item ]
+  continue
+
+handleCommand PreviousMessage = do
+  messageHistory %= previousMessage
+  continue
+
+handleCommand Open = do
+  prompt_ @'DirectionPrompt ["open", "prompt"] Cancellable
+    $ \(DirectionResult dir) -> do
+      pos <- move dir <$> use characterPosition
+      doors <- uses entities $ entitiesAtPositionWithType @Door pos
+      if | null doors -> say_ ["open", "nothingToOpen"]
+         | any (view $ _2 . locked) doors -> say_ ["open", "locked"]
+         | all (view $ _2 . open) doors   -> say_ ["open", "alreadyOpen"]
+         | otherwise -> do
+             for_ doors $ \(eid, _) ->
+               entities . ix eid . positioned . _SomeEntity . open .= True
+             say_ ["open", "success"]
+      pure ()
+  stepGame -- TODO
+  continue
+
+handleCommand Close = do
+  prompt_ @'DirectionPrompt ["close", "prompt"] Cancellable
+    $ \(DirectionResult dir) -> do
+      pos <- move dir <$> use characterPosition
+      (nonDoors, doors) <- uses entities
+        $ partitionEithers
+        . toList
+        . map ( (matching . aside $ _SomeEntity @Door)
+              . over _2 (view positioned)
+              )
+        . EntityMap.atPositionWithIDs pos
+      if | null doors -> say_ ["close", "nothingToClose"]
+         | all (view $ _2 . closed) doors -> say_ ["close", "alreadyClosed"]
+         | any (view blocksObject . entityAttributes . snd) nonDoors ->
+           say ["close", "blocked"]
+           $ object [ "entityDescriptions"
+                      A..= ( toSentence
+                           . map description
+                           . filter (view blocksObject . entityAttributes)
+                           . map snd
+                           ) nonDoors
+                    , "blockOrBlocks"
+                      A..= ( if length nonDoors == 1
+                             then "blocks"
+                             else "block"
+                           :: Text)
+                    ]
+         | otherwise -> do
+             for_ doors $ \(eid, _) ->
+               entities . ix eid . positioned . _SomeEntity . closed .= True
+             for_ nonDoors $ \(eid, _) ->
+               entities . ix eid . position %= move dir
+             say_ ["close", "success"]
+      pure ()
+  stepGame -- TODO
+  continue
+
+handleCommand Look = do
+  prompt_ @'PointOnMap ["look", "prompt"] Cancellable
+    $ \(PointOnMapResult pos) ->
+      gets (revealedEntitiesAtPosition pos)
+      >>= \case
+        Empty -> say_ ["look", "nothing"]
+        ents -> describeEntities ents
+  continue
+
+handleCommand Wait = stepGame >> continue
+
+handleCommand Eat = do
+  uses (character . inventory . backpack)
+       (V.mapMaybe (\item -> (item,) <$> item ^. Item.itemType . edible))
+    >>= \case
+      Empty -> say_ ["eat", "noFood"]
+      food ->
+        let foodMenuItem idx (item, edibleItem)
+              = ( item ^. Item.itemType . char . char
+                , MenuOption (description item) (idx, item, edibleItem))
+                -- TODO refactor to use entityMenu_
+            menuItems = mkMenuItems $ imap foodMenuItem food
+        in menu_ ["eat", "menuPrompt"] Cancellable menuItems
+          $ \(MenuResult (idx, item, edibleItem)) -> do
+            character . inventory . backpack %= removeVectorIndex idx
+            let msg = fromMaybe (Messages.lookup ["eat", "eat"])
+                      $ edibleItem ^. eatMessage
+            character . characterHitpoints' +=
+              edibleItem ^. hitpointsHealed . to fromIntegral
+            message msg $ object ["item" A..= item]
+            stepGame -- TODO
+  continue
+
+handleCommand Read = do
+  -- TODO allow reading things in the inventory (combo direction+menu prompt?)
+  prompt_ @'DirectionPrompt ["read", "prompt"] Cancellable
+    $ \(DirectionResult dir) -> do
+      pos <- uses characterPosition $ move dir
+      uses entities
+        (fmap snd . entitiesAtPositionWithType @GroundMessage pos) >>= \case
+          Empty -> say_ ["read", "nothing"]
+          GroundMessage msg :< Empty ->
+            say ["read", "result"] $ object ["message" A..= msg]
+          msgs ->
+            let readAndContinue Empty = pure ()
+                readAndContinue (msg :< msgs') =
+                  prompt @'Continue
+                    ["read", "result"]
+                    (object ["message" A..= msg])
+                    Cancellable
+                  . const
+                  $ readAndContinue msgs'
+                readAndContinue _ = error "this is total"
+            in readAndContinue msgs
+  continue
+
+handleCommand ShowInventory = showPanel InventoryPanel >> continue
+
+handleCommand Wield = do
+  selectItemFromInventory_ ["wield", "menu"] Cancellable asWieldedItem
+    (say_ ["wield", "nothing"])
+    $ \(MenuResult item) -> do
+      prevItems <- character . inventory . wielded <<.= inRightHand item
+      character . inventory . backpack
+        <>= fromList (prevItems ^.. wieldedItems . wieldedItem)
+      say ["wield", "wielded"] item
+  continue
+
+handleCommand Save = do
+  -- TODO default save locations / config file?
+  prompt_ @'StringPrompt ["save", "location"] Cancellable
+    $ \(StringResult filename) -> do
+       exists <- liftIO . doesFileExist $ unpack filename
+       if exists
+       then confirm ["save", "overwrite"] (object ["filename" A..= filename])
+            $ doSave filename
+       else doSave filename
+  continue
+  where
+    doSave filename = do
+      src <- gets saveGame
+      lift . liftIO $ do
+        writeFile (unpack filename) $ toStrict src
+        exitSuccess
+
+handleCommand GoUp = do
+  hasStairs <- uses entitiesAtCharacter $ elem (SomeEntity UpStaircase)
+  if hasStairs
+  then uses levels prevLevel >>= \case
+    Just levs' -> levels .= levs'
+    Nothing ->
+      -- TODO in nethack, this leaves the game. Maybe something similar here?
+      say_ ["cant", "goUp"]
+  else say_ ["cant", "goUp"]
+
+  continue
+
+handleCommand GoDown = do
+  hasStairs <- uses entitiesAtCharacter $ elem (SomeEntity DownStaircase)
+
+  if hasStairs
+  then do
+    levs <- use levels
+    let newLevelNum = Levels.pos levs + 1
+    levs' <- nextLevel (levelToGameLevel <$> genLevel newLevelNum) levs
+    cEID <- use characterEntityID
+    pCharacter <- entities . at cEID <<.= Nothing
+    levels .= levs'
+    entities . at cEID .= pCharacter
+    characterPosition .= extract levs' ^. upStaircasePosition
+  else say_ ["cant", "goDown"]
+
+  continue
+
+handleCommand (StartAutoMove dir) = do
+  runAutocommand $ AutoMove dir
+  continue
+
+--
+
+handleCommand ToggleRevealAll = do
+  val <- debugState . allRevealed <%= not
+  say ["debug", "toggleRevealAll"] $ object [ "revealAll" A..= val ]
+  continue
+
+--------------------------------------------------------------------------------
+attackAt :: Position -> AppM ()
+attackAt pos =
+  uses entities (entitiesAtPositionWithType @Creature pos) >>= \case
+    Empty               -> say_ ["combat", "nothingToAttack"]
+    (creature :< Empty) -> attackCreature creature
+    creatures ->
+      menu_ ["combat", "menu"] Cancellable (entityMenu_ creatures)
+      $ \(MenuResult creature) -> attackCreature creature
+ where
+  attackCreature (creatureID, creature) = do
+    charDamage <- uses character characterDamage
+    let creature' = Creature.damage charDamage creature
+        msgParams = object ["creature" A..= creature']
+    if Creature.isDead creature'
+      then do
+        say ["combat", "killed"] msgParams
+        entities . at creatureID .= Nothing
+      else do
+        msg <- uses character getAttackMessage
+        message msg msgParams
+        entities . ix creatureID . positioned .= SomeEntity creature'
+
+    whenM (uses character $ isNothing . weapon)
+      $ whenM (chance (0.08 :: Float)) $ do
+        say_ ["combat", "fistSelfDamage"]
+        character %= Character.damage 1
+
+    stepGame -- TODO
+  weapon chr = chr ^? inventory . wielded . wieldedItems . wieldableItem
+  getAttackMessage chr =
+    case weapon chr of
+      Just wi ->
+        fromMaybe (Messages.lookup ["combat", "hit", "generic"])
+        $ wi ^. attackMessage
+      Nothing ->
+        Messages.lookup ["combat", "hit", "fists"]
+
+entityMenu_
+  :: (Comonad w, Entity entity)
+  => [w entity]
+  -> Map Char (MenuOption (w entity))
+entityMenu_ = mkMenuItems @[_] . map entityMenuItem
+  where
+    entityMenuItem wentity
+      = let entity = extract wentity
+      in (entityMenuChar entity, MenuOption (description entity) wentity)
+
+
+entityMenuChar :: Entity a => a -> Char
+entityMenuChar entity
+  = let ec = entityChar entity ^. char
+    in if ec `elem` (['a'..'z'] ++ ['A'..'Z'])
+        then ec
+        else 'a'
+
+-- | Prompt with an item to select out of the inventory, remove it from the
+-- inventory, and call callback with it
+selectItemFromInventory
+  :: forall item params.
+    (ToJSON params)
+  => [Text]            -- ^ Menu message
+  -> params            -- ^ Menu message params
+  -> PromptCancellable -- ^ Is the menu cancellable?
+  -> Prism' Item item  -- ^ Attach some extra information to the item, in a
+                      --   recoverable fashion. Prism vs iso so we can discard
+                      --   items.
+  -> AppM ()            -- ^ Action to take if there are no items matching
+  -> (PromptResult ('Menu item) -> AppM ())
+  -> AppM ()
+selectItemFromInventory msgPath msgParams cancellable extraInfo onEmpty cb =
+  uses (character . inventory . backpack)
+       (V.mapMaybe $ preview extraInfo)
+    >>= \case
+      Empty -> onEmpty
+      items' ->
+        menu msgPath msgParams cancellable (itemMenu items')
+        $ \(MenuResult (idx, item)) -> do
+          character . inventory . backpack %= removeVectorIndex idx
+          cb $ MenuResult item
+  where
+    itemMenu = mkMenuItems . imap itemMenuItem
+    itemMenuItem idx extraInfoItem =
+      let item = extraInfo # extraInfoItem
+      in ( entityMenuChar item
+         , MenuOption (description item) (idx, extraInfoItem))
+
+selectItemFromInventory_
+  :: forall item.
+    [Text]            -- ^ Menu message
+  -> PromptCancellable -- ^ Is the menu cancellable?
+  -> Prism' Item item  -- ^ Attach some extra information to the item, in a
+                      --   recoverable fashion. Prism vs iso so we can discard
+                      --   items.
+  -> AppM ()            -- ^ Action to take if there are no items matching
+  -> (PromptResult ('Menu item) -> AppM ())
+  -> AppM ()
+selectItemFromInventory_ msgPath = selectItemFromInventory msgPath ()
+
+-- entityMenu :: Entity entity => [entity] -> Map Char (MenuOption entity)
+-- entityMenu = map (map runIdentity) . entityMenu_ . fmap Identity
+
+showPanel :: Panel -> AppM ()
+showPanel panel = do
+  activePanel ?= panel
+  prompt_ @'Continue ["generic", "continue"] Uncancellable
+    . const
+    $ activePanel .= Nothing
+
+--------------------------------------------------------------------------------
+
+genLevel
+  :: Int -- ^ level number
+  -> AppM Level
+genLevel _num = do
+  let dims = Dimensions 80 80
+  generator <- choose $ CaveAutomata :| [Dungeon]
+  level <- case generator of
+    CaveAutomata -> generateLevel SCaveAutomata CaveAutomata.defaultParams dims
+    Dungeon -> generateLevel SDungeon Dungeon.defaultParams dims
+  pure $!! level
+
+levelToGameLevel :: Level -> GameLevel
+levelToGameLevel level =
+  let _levelEntities = levelToEntityMap level
+      _upStaircasePosition = level ^. levelCharacterPosition
+      _levelRevealedPositions = mempty
+  in GameLevel {..}