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-rw-r--r--src/Xanthous/AI/Gormlak.hs74
-rw-r--r--src/Xanthous/AI/Gormlak.hs-boot7
-rw-r--r--src/Xanthous/Entities/Creature.hs58
-rw-r--r--src/Xanthous/Entities/Creature.hs-boot2
-rw-r--r--src/Xanthous/Entities/Creature/Hippocampus.hs64
-rw-r--r--src/Xanthous/Entities/Entities.hs1
-rw-r--r--src/Xanthous/Entities/Entities.hs-boot14
-rw-r--r--src/Xanthous/Game/Lenses.hs6
-rw-r--r--xanthous.cabal4
9 files changed, 149 insertions, 81 deletions
diff --git a/src/Xanthous/AI/Gormlak.hs b/src/Xanthous/AI/Gormlak.hs
index 3e950f67f364..031262533d21 100644
--- a/src/Xanthous/AI/Gormlak.hs
+++ b/src/Xanthous/AI/Gormlak.hs
@@ -1,14 +1,18 @@
 {-# OPTIONS_GHC -fno-warn-orphans #-}
+{-# LANGUAGE UndecidableInstances #-}
 --------------------------------------------------------------------------------
-module Xanthous.AI.Gormlak () where
+module Xanthous.AI.Gormlak
+  ( HasVisionRadius(..)
+  , GormlakBrain(..)
+  ) where
 --------------------------------------------------------------------------------
 import           Xanthous.Prelude hiding (lines)
 --------------------------------------------------------------------------------
-import           Data.Coerce
 import           Control.Monad.State
 import           Control.Monad.Random
 import           Data.Aeson (object)
 import qualified Data.Aeson as A
+import           Data.Generics.Product.Fields
 --------------------------------------------------------------------------------
 import           Xanthous.Data
                  ( Positioned(..), positioned, position
@@ -16,14 +20,11 @@ import           Xanthous.Data
                  , Ticks, (|*|), invertedRate
                  )
 import           Xanthous.Data.EntityMap
-import qualified Xanthous.Entities.Creature as Creature
-import           Xanthous.Entities.Creature
-                 ( Creature, hippocampus, creatureType
-                 , destination, destinationProgress, destinationPosition
-                 )
+import           Xanthous.Entities.Creature.Hippocampus
 import           Xanthous.Entities.Character (Character)
 import qualified Xanthous.Entities.Character as Character
 import qualified Xanthous.Entities.RawTypes as Raw
+import           Xanthous.Entities.RawTypes (CreatureType)
 import           Xanthous.Game.State
 import           Xanthous.Game.Lenses
                  ( Collision(..), entityCollision, collisionAt
@@ -34,28 +35,44 @@ import           Xanthous.Random
 import           Xanthous.Monad (say)
 --------------------------------------------------------------------------------
 
+--  TODO move the following two classes to a more central location
+
+class HasVisionRadius a where visionRadius :: a -> Word
+
+type IsCreature entity =
+  ( HasVisionRadius entity
+  , HasField "_hippocampus" entity entity Hippocampus Hippocampus
+  , HasField "_creatureType" entity entity CreatureType CreatureType
+  , A.ToJSON entity
+  )
+
+--------------------------------------------------------------------------------
+
 stepGormlak
-  :: (MonadState GameState m, MonadRandom m)
+  :: forall entity m.
+    ( MonadState GameState m, MonadRandom m
+    , IsCreature entity
+    )
   => Ticks
-  -> Positioned Creature
-  -> m (Positioned Creature)
+  -> Positioned entity
+  -> m (Positioned entity)
 stepGormlak ticks pe@(Positioned pos creature) = do
   dest <- maybe (selectDestination pos creature) pure
-         $ creature ^. hippocampus . destination
+         $ creature ^. field @"_hippocampus" . destination
   let progress' =
         dest ^. destinationProgress
-        + creature ^. creatureType . Raw.speed . invertedRate |*| ticks
+        + creature ^. field @"_creatureType" . Raw.speed . invertedRate |*| ticks
   if progress' < 1
     then pure
          $ pe
-         & positioned . hippocampus . destination
+         & positioned . field @"_hippocampus" . destination
          ?~ (dest & destinationProgress .~ progress')
     else do
       let newPos = dest ^. destinationPosition
           remainingSpeed = progress' - 1
       newDest <- selectDestination newPos creature
                 <&> destinationProgress +~ remainingSpeed
-      let pe' = pe & positioned . hippocampus . destination ?~ newDest
+      let pe' = pe & positioned . field @"_hippocampus" . destination ?~ newDest
       collisionAt newPos >>= \case
         Nothing -> pure $ pe' & position .~ newPos
         Just Stop -> pure pe'
@@ -64,7 +81,7 @@ stepGormlak ticks pe@(Positioned pos creature) = do
           when (any (entityIs @Character) ents) attackCharacter
           pure pe'
   where
-    selectDestination pos' creature' = Creature.destinationFromPos <$> do
+    selectDestination pos' creature' = destinationFromPos <$> do
       canSeeCharacter <- uses entities $ canSee (entityIs @Character) pos' vision
       if canSeeCharacter
         then do
@@ -76,29 +93,32 @@ stepGormlak ticks pe@(Positioned pos creature) = do
         lines <- map (takeWhile (isNothing . entityCollision . map snd . snd)
                     -- the first item on these lines is always the creature itself
                     . fromMaybe mempty . tailMay)
-                . linesOfSight pos' (Creature.visionRadius creature')
+                . linesOfSight pos' (visionRadius creature')
                 <$> use entities
         line <- choose $ weightedBy length lines
         pure $ fromMaybe pos' $ fmap fst . headMay =<< line
 
-    vision = Creature.visionRadius creature
+    vision = visionRadius creature
     attackCharacter = do
       say ["combat", "creatureAttack"] $ object [ "creature" A..= creature ]
       character %= Character.damage 1
 
-newtype GormlakBrain = GormlakBrain Creature
+newtype GormlakBrain entity = GormlakBrain { _unGormlakBrain :: entity }
 
-instance Brain GormlakBrain where
-  step ticks = fmap coerce . stepGormlak ticks . coerce
+instance (IsCreature entity) => Brain (GormlakBrain entity) where
+  step ticks
+    = fmap (fmap GormlakBrain)
+    . stepGormlak ticks
+    . fmap _unGormlakBrain
   entityCanMove = const True
 
 --------------------------------------------------------------------------------
 
-instance Brain Creature where
-  step = brainVia GormlakBrain
-  entityCanMove = const True
+-- instance Brain Creature where
+--   step = brainVia GormlakBrain
+--   entityCanMove = const True
 
-instance Entity Creature where
-  blocksVision _ = False
-  description = view $ Creature.creatureType . Raw.description
-  entityChar = view $ Creature.creatureType . char
+-- instance Entity Creature where
+--   blocksVision _ = False
+--   description = view $ Creature.creatureType . Raw.description
+--   entityChar = view $ Creature.creatureType . char
diff --git a/src/Xanthous/AI/Gormlak.hs-boot b/src/Xanthous/AI/Gormlak.hs-boot
deleted file mode 100644
index 47e62f624905..000000000000
--- a/src/Xanthous/AI/Gormlak.hs-boot
+++ /dev/null
@@ -1,7 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans #-}
-module Xanthous.AI.Gormlak where
-
-import Xanthous.Game.State
-import Xanthous.Entities.Creature
-
-instance Entity Creature
diff --git a/src/Xanthous/Entities/Creature.hs b/src/Xanthous/Entities/Creature.hs
index 19c7834228e0..6e955324a06a 100644
--- a/src/Xanthous/Entities/Creature.hs
+++ b/src/Xanthous/Entities/Creature.hs
@@ -34,47 +34,13 @@ import           Test.QuickCheck.Arbitrary.Generic
 import           Data.Aeson.Generic.DerivingVia
 import           Data.Aeson (ToJSON, FromJSON)
 --------------------------------------------------------------------------------
-import           Xanthous.Entities.RawTypes
-                 hiding (Creature, description, damage)
+import           Xanthous.AI.Gormlak
+import           Xanthous.Entities.RawTypes hiding
+                 (Creature, description, damage)
+import qualified Xanthous.Entities.RawTypes as Raw
 import           Xanthous.Game.State
 import           Xanthous.Data
---------------------------------------------------------------------------------
-
-data Destination = Destination
-  { _destinationPosition :: !Position
-    -- | The progress towards the destination, tracked as an offset from the
-    -- creature's original position.
-    --
-    -- When this value reaches >= 1, the creature has reached their destination
-  , _destinationProgress :: !Tiles
-  }
-  deriving stock (Eq, Show, Ord, Generic)
-  deriving anyclass (NFData, CoArbitrary, Function)
-  deriving (ToJSON, FromJSON)
-       via WithOptions '[ FieldLabelModifier '[Drop 1] ]
-                       Destination
-instance Arbitrary Destination where arbitrary = genericArbitrary
-makeLenses ''Destination
-
-destinationFromPos :: Position -> Destination
-destinationFromPos _destinationPosition =
-  let _destinationProgress = 0
-  in Destination{..}
-
-data Hippocampus = Hippocampus
-  { _destination :: !(Maybe Destination)
-  }
-  deriving stock (Eq, Show, Ord, Generic)
-  deriving anyclass (NFData, CoArbitrary, Function)
-  deriving (ToJSON, FromJSON)
-       via WithOptions '[ FieldLabelModifier '[Drop 1] ]
-                       Hippocampus
-instance Arbitrary Hippocampus where arbitrary = genericArbitrary
-makeLenses ''Hippocampus
-
-initialHippocampus :: Hippocampus
-initialHippocampus = Hippocampus Nothing
-
+import           Xanthous.Entities.Creature.Hippocampus
 --------------------------------------------------------------------------------
 
 data Creature = Creature
@@ -91,6 +57,17 @@ data Creature = Creature
 instance Arbitrary Creature where arbitrary = genericArbitrary
 makeLenses ''Creature
 
+instance HasVisionRadius Creature where
+  visionRadius = const 50 -- TODO
+
+instance Brain Creature where
+  step = brainVia GormlakBrain
+  entityCanMove = const True
+
+instance Entity Creature where
+  blocksVision _ = False
+  description = view $ creatureType . Raw.description
+  entityChar = view $ creatureType . char
 
 --------------------------------------------------------------------------------
 
@@ -109,7 +86,4 @@ damage amount = hitpoints %~ \hp ->
 isDead :: Creature -> Bool
 isDead = views hitpoints (== 0)
 
-visionRadius :: Creature -> Word
-visionRadius = const 50 -- TODO
-
 {-# ANN module ("Hlint: ignore Use newtype instead of data" :: String) #-}
diff --git a/src/Xanthous/Entities/Creature.hs-boot b/src/Xanthous/Entities/Creature.hs-boot
new file mode 100644
index 000000000000..4c930d26426d
--- /dev/null
+++ b/src/Xanthous/Entities/Creature.hs-boot
@@ -0,0 +1,2 @@
+module Xanthous.Entities.Creature where
+data Creature
diff --git a/src/Xanthous/Entities/Creature/Hippocampus.hs b/src/Xanthous/Entities/Creature/Hippocampus.hs
new file mode 100644
index 000000000000..501a5b597221
--- /dev/null
+++ b/src/Xanthous/Entities/Creature/Hippocampus.hs
@@ -0,0 +1,64 @@
+{-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE TemplateHaskell #-}
+--------------------------------------------------------------------------------
+module Xanthous.Entities.Creature.Hippocampus
+  (-- * Hippocampus
+    Hippocampus(..)
+  , initialHippocampus
+    -- ** Lenses
+  , destination
+    -- ** Destination
+  , Destination(..)
+  , destinationFromPos
+    -- *** Lenses
+  , destinationPosition
+  , destinationProgress
+  )
+where
+--------------------------------------------------------------------------------
+import           Xanthous.Prelude
+--------------------------------------------------------------------------------
+import           Data.Aeson.Generic.DerivingVia
+import           Data.Aeson (ToJSON, FromJSON)
+import           Test.QuickCheck
+import           Test.QuickCheck.Arbitrary.Generic
+--------------------------------------------------------------------------------
+import           Xanthous.Data
+import           Xanthous.Util.QuickCheck
+--------------------------------------------------------------------------------
+
+
+data Destination = Destination
+  { _destinationPosition :: !Position
+    -- | The progress towards the destination, tracked as an offset from the
+    -- creature's original position.
+    --
+    -- When this value reaches >= 1, the creature has reached their destination
+  , _destinationProgress :: !Tiles
+  }
+  deriving stock (Eq, Show, Ord, Generic)
+  deriving anyclass (NFData, CoArbitrary, Function)
+  deriving (ToJSON, FromJSON)
+       via WithOptions '[ FieldLabelModifier '[Drop 1] ]
+                       Destination
+instance Arbitrary Destination where arbitrary = genericArbitrary
+makeLenses ''Destination
+
+destinationFromPos :: Position -> Destination
+destinationFromPos _destinationPosition =
+  let _destinationProgress = 0
+  in Destination{..}
+
+data Hippocampus = Hippocampus
+  { _destination :: !(Maybe Destination)
+  }
+  deriving stock (Eq, Show, Ord, Generic)
+  deriving anyclass (NFData, CoArbitrary, Function)
+  deriving Arbitrary via GenericArbitrary Hippocampus
+  deriving (ToJSON, FromJSON)
+       via WithOptions '[ FieldLabelModifier '[Drop 1] ]
+                       Hippocampus
+makeLenses ''Hippocampus
+
+initialHippocampus :: Hippocampus
+initialHippocampus = Hippocampus Nothing
diff --git a/src/Xanthous/Entities/Entities.hs b/src/Xanthous/Entities/Entities.hs
index 802aecddebdf..8793565a2a34 100644
--- a/src/Xanthous/Entities/Entities.hs
+++ b/src/Xanthous/Entities/Entities.hs
@@ -14,7 +14,6 @@ import           Xanthous.Entities.Item
 import           Xanthous.Entities.Creature
 import           Xanthous.Entities.Environment
 import           Xanthous.Game.State
-import           {-# SOURCE #-} Xanthous.AI.Gormlak ()
 import           Xanthous.Util.QuickCheck
 import           Data.Aeson.Generic.DerivingVia
 --------------------------------------------------------------------------------
diff --git a/src/Xanthous/Entities/Entities.hs-boot b/src/Xanthous/Entities/Entities.hs-boot
new file mode 100644
index 000000000000..519a862c6a5a
--- /dev/null
+++ b/src/Xanthous/Entities/Entities.hs-boot
@@ -0,0 +1,14 @@
+{-# OPTIONS_GHC -fno-warn-orphans #-}
+module Xanthous.Entities.Entities where
+
+import Test.QuickCheck
+import Data.Aeson
+import Xanthous.Game.State (SomeEntity, GameState, Entity)
+
+instance Arbitrary SomeEntity
+instance Function SomeEntity
+instance CoArbitrary SomeEntity
+instance FromJSON SomeEntity
+instance Entity SomeEntity
+
+instance FromJSON GameState
diff --git a/src/Xanthous/Game/Lenses.hs b/src/Xanthous/Game/Lenses.hs
index 4a080f85f017..580435a0688b 100644
--- a/src/Xanthous/Game/Lenses.hs
+++ b/src/Xanthous/Game/Lenses.hs
@@ -27,9 +27,9 @@ import qualified Xanthous.Data.EntityMap as EntityMap
 import           Xanthous.Data.EntityMap.Graphics (visiblePositions)
 import           Xanthous.Entities.Character (Character, mkCharacter)
 import           Xanthous.Entities.Environment (Door, open, GroundMessage)
-import           Xanthous.Entities.Item (Item)
-import           Xanthous.Entities.Creature (Creature)
-import           Xanthous.Entities.Entities ()
+import            Xanthous.Entities.Item (Item)
+import           {-# SOURCE #-} Xanthous.Entities.Creature (Creature)
+import           {-# SOURCE #-} Xanthous.Entities.Entities ()
 --------------------------------------------------------------------------------
 
 getInitialState :: IO GameState
diff --git a/xanthous.cabal b/xanthous.cabal
index f173b1a114a9..090739c2894b 100644
--- a/xanthous.cabal
+++ b/xanthous.cabal
@@ -4,7 +4,7 @@ cabal-version: 1.12
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: a4f6c2c91e3c94c81de5d6b27201cb22e7f9f9c5d8a4f14beec63c1540d01ca1
+-- hash: 36af39a9e3b4e97923c1b363d7d84e2c99f126efd908778d0d048d0c472f2723
 
 name:           xanthous
 version:        0.1.0.0
@@ -40,6 +40,7 @@ library
       Xanthous.Data.VectorBag
       Xanthous.Entities.Character
       Xanthous.Entities.Creature
+      Xanthous.Entities.Creature.Hippocampus
       Xanthous.Entities.Draw.Util
       Xanthous.Entities.Entities
       Xanthous.Entities.Environment
@@ -141,6 +142,7 @@ executable xanthous
       Xanthous.Data.VectorBag
       Xanthous.Entities.Character
       Xanthous.Entities.Creature
+      Xanthous.Entities.Creature.Hippocampus
       Xanthous.Entities.Draw.Util
       Xanthous.Entities.Entities
       Xanthous.Entities.Environment
generated by cgit-pink 1.4.1 (git 2.44.2) at 2024-07-28T06ยท56+0000