diff options
Diffstat (limited to 'users/grfn/xanthous/src/Xanthous/App/Prompt.hs')
| -rw-r--r-- | users/grfn/xanthous/src/Xanthous/App/Prompt.hs | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/users/grfn/xanthous/src/Xanthous/App/Prompt.hs b/users/grfn/xanthous/src/Xanthous/App/Prompt.hs new file mode 100644 index 000000000000..f9ee9fe1686f --- /dev/null +++ b/users/grfn/xanthous/src/Xanthous/App/Prompt.hs @@ -0,0 +1,228 @@ +{-# LANGUAGE UndecidableInstances #-} +-------------------------------------------------------------------------------- +module Xanthous.App.Prompt + ( handlePromptEvent + , clearPrompt + , prompt + , prompt_ + , stringPromptWithDefault + , stringPromptWithDefault_ + , confirm_ + , confirm + , menu + , menu_ + , firePrompt_ + ) where +-------------------------------------------------------------------------------- +import Xanthous.Prelude +-------------------------------------------------------------------------------- +import Brick (BrickEvent(..), Next) +import Brick.Widgets.Edit (handleEditorEvent) +import Data.Aeson (ToJSON, object) +import Graphics.Vty.Input.Events (Event(EvKey), Key(..)) +-------------------------------------------------------------------------------- +import Xanthous.App.Common +import Xanthous.Data (move, Tiles, Position, positioned, _Position) +import qualified Xanthous.Data as Data +import Xanthous.Command (directionFromChar) +import Xanthous.Data.App (ResourceName, AppEvent) +import Xanthous.Game.Prompt +import Xanthous.Game.State +import qualified Xanthous.Messages as Messages +import qualified Xanthous.Data.EntityMap as EntityMap +import Xanthous.Entities.Creature (creatureType, Creature) +import Xanthous.Entities.RawTypes (hostile) +import qualified Linear.Metric as Metric +-------------------------------------------------------------------------------- + +handlePromptEvent + :: Text -- ^ Prompt message + -> Prompt AppM + -> BrickEvent ResourceName AppEvent + -> AppM (Next GameState) + +handlePromptEvent _ (Prompt Cancellable _ _ _ _) (VtyEvent (EvKey KEsc [])) + = clearPrompt >> continue +handlePromptEvent _ pr (VtyEvent (EvKey KEnter [])) + = clearPrompt >> submitPrompt pr >> continue + +handlePromptEvent _ pr@(Prompt _ SConfirm _ _ _) (VtyEvent (EvKey (KChar 'y') [])) + = clearPrompt >> submitPrompt pr >> continue + +handlePromptEvent _ (Prompt _ SConfirm _ _ _) (VtyEvent (EvKey (KChar 'n') [])) + = clearPrompt >> continue + +handlePromptEvent + msg + (Prompt c SStringPrompt (StringPromptState edit) pri cb) + ev + = do + edit' <- lift $ handleEditorEvent ev edit + let prompt' = Prompt c SStringPrompt (StringPromptState edit') pri cb + promptState .= WaitingPrompt msg prompt' + continue + +handlePromptEvent _ (Prompt _ SDirectionPrompt _ _ cb) + (VtyEvent (EvKey (KChar (directionFromChar -> Just dir)) [])) + = clearPrompt >> cb (DirectionResult dir) >> continue +handlePromptEvent _ (Prompt _ SDirectionPrompt _ _ _) _ = continue + +handlePromptEvent _ (Prompt _ SMenu _ items' cb) (VtyEvent (EvKey (KChar chr) [])) + | Just (MenuOption _ res) <- items' ^. at chr + = clearPrompt >> cb (MenuResult res) >> continue + | otherwise + = continue + +handlePromptEvent + msg + (Prompt c SPointOnMap (PointOnMapPromptState pos) pri cb) + (VtyEvent (EvKey (KChar (directionFromChar -> Just dir)) [])) + = let pos' = move dir pos + prompt' = Prompt c SPointOnMap (PointOnMapPromptState pos') pri cb + in promptState .= WaitingPrompt msg prompt' + >> continue +handlePromptEvent _ (Prompt _ SPointOnMap _ _ _) _ = continue + +handlePromptEvent + msg + (Prompt c SFire (FirePromptState pos) pri@(origin, range) cb) + (VtyEvent (EvKey (KChar (directionFromChar -> Just dir)) [])) + = do + let pos' = move dir pos + prompt' = Prompt c SFire (FirePromptState pos') pri cb + when (Data.distance origin pos' <= range) $ + promptState .= WaitingPrompt msg prompt' + continue + +handlePromptEvent + _ + (Prompt Cancellable _ _ _ _) + (VtyEvent (EvKey (KChar 'q') [])) + = clearPrompt >> continue +handlePromptEvent _ _ _ = continue + +clearPrompt :: AppM () +clearPrompt = promptState .= NoPrompt + +type PromptParams :: PromptType -> Type +type family PromptParams pt where + PromptParams ('Menu a) = Map Char (MenuOption a) -- Menu items + PromptParams 'Fire = Tiles -- Range + PromptParams _ = () + +prompt + :: forall (pt :: PromptType) (params :: Type). + (ToJSON params, SingPromptType pt, PromptParams pt ~ ()) + => [Text] -- ^ Message key + -> params -- ^ Message params + -> PromptCancellable + -> (PromptResult pt -> AppM ()) -- ^ Prompt promise handler + -> AppM () +prompt msgPath params cancellable cb = do + let pt = singPromptType @pt + msg <- Messages.message msgPath params + mp :: Maybe (Prompt AppM) <- case pt of + SPointOnMap -> do + charPos <- use characterPosition + pure . Just $ mkPointOnMapPrompt cancellable charPos cb + SStringPrompt -> pure . Just $ mkStringPrompt cancellable cb + SConfirm -> pure . Just $ mkPrompt cancellable pt cb + SDirectionPrompt -> pure . Just $ mkPrompt cancellable pt cb + SContinue -> pure . Just $ mkPrompt cancellable pt cb + for_ mp $ \p -> promptState .= WaitingPrompt msg p + +prompt_ + :: forall (pt :: PromptType). + (SingPromptType pt, PromptParams pt ~ ()) + => [Text] -- ^ Message key + -> PromptCancellable + -> (PromptResult pt -> AppM ()) -- ^ Prompt promise handler + -> AppM () +prompt_ msg = prompt msg $ object [] + +stringPromptWithDefault + :: forall (params :: Type). (ToJSON params) + => [Text] -- ^ Message key + -> params -- ^ Message params + -> PromptCancellable + -> Text -- ^ Prompt default + -> (PromptResult 'StringPrompt -> AppM ()) -- ^ Prompt promise handler + -> AppM () +stringPromptWithDefault msgPath params cancellable def cb = do + msg <- Messages.message msgPath params + let p = mkStringPromptWithDefault cancellable def cb + promptState .= WaitingPrompt msg p + +stringPromptWithDefault_ + :: [Text] -- ^ Message key + -> PromptCancellable + -> Text -- ^ Prompt default + -> (PromptResult 'StringPrompt -> AppM ()) -- ^ Prompt promise handler + -> AppM () +stringPromptWithDefault_ msg = stringPromptWithDefault msg $ object [] + +confirm + :: ToJSON params + => [Text] -- ^ Message key + -> params + -> AppM () + -> AppM () +confirm msgPath params + = prompt @'Confirm msgPath params Cancellable . const + +confirm_ :: [Text] -> AppM () -> AppM () +confirm_ msgPath = confirm msgPath $ object [] + +menu :: forall (a :: Type) (params :: Type). + (ToJSON params) + => [Text] -- ^ Message key + -> params -- ^ Message params + -> PromptCancellable + -> Map Char (MenuOption a) -- ^ Menu items + -> (PromptResult ('Menu a) -> AppM ()) -- ^ Menu promise handler + -> AppM () +menu msgPath params cancellable items' cb = do + msg <- Messages.message msgPath params + let p = mkMenu cancellable items' cb + promptState .= WaitingPrompt msg p + +menu_ :: forall (a :: Type). + [Text] -- ^ Message key + -> PromptCancellable + -> Map Char (MenuOption a) -- ^ Menu items + -> (PromptResult ('Menu a) -> AppM ()) -- ^ Menu promise handler + -> AppM () +menu_ msgPath = menu msgPath $ object [] + +firePrompt_ + :: [Text] -- ^ Message key + -> PromptCancellable + -> Tiles -- ^ Range + -> (PromptResult 'Fire -> AppM ()) -- ^ Promise handler + -> AppM () +firePrompt_ msgPath cancellable range cb = do + msg <- Messages.message msgPath $ object [] + initialPos <- maybe (use characterPosition) pure =<< nearestEnemyPosition + let p = mkFirePrompt cancellable initialPos range cb + promptState .= WaitingPrompt msg p + +-- | Returns the position of the nearest visible hostile creature, if any +nearestEnemyPosition :: AppM (Maybe Position) +nearestEnemyPosition = do + charPos <- use characterPosition + em <- use entities + ps <- characterVisiblePositions + let candidates = toList ps >>= \p -> + let ents = EntityMap.atPositionWithIDs p em + in ents + ^.. folded + . _2 + . positioned + . _SomeEntity @Creature + . creatureType + . filtered (view hostile) + . to (const (distance charPos p, p)) + pure . headMay . fmap snd $ sortOn fst candidates + where + distance :: Position -> Position -> Double + distance = Metric.distance `on` (fmap fromIntegral . view _Position) |