Support entities facing left

Perhaps it would be better to support "custom properties" in tiled, but
this is OK for now.

5 files changed, 19 insertions, 14 deletions

diff --git a/src/Game/Entities.hs b/src/Game/Entities.hs
index 2f647d9..6506a60 100644
--- a/src/Game/Entities.hs
+++ b/src/Game/Entities.hs
@@ -44,8 +44,8 @@ mkEntities sprites m controls = do
   pure $ Entities sprites playerRef (player : (entryEffect : entities))
   where
     toEntity :: IORef Entity -> M.Object -> IO Entity
-    toEntity playerRef (M.SlimeEntity x y) = mkSlime sprites x y (collision playerRef 16) (M.isBlocked m)
-    toEntity playerRef (M.RobotEntity x y) = mkRobot sprites x y (collision playerRef 24) (M.isBlocked m)
+    toEntity playerRef (M.SlimeEntity x y d) = mkSlime sprites x y d (collision playerRef 16) (M.isBlocked m)
+    toEntity playerRef (M.RobotEntity x y d) = mkRobot sprites x y d (collision playerRef 24) (M.isBlocked m)
     toEntity playerRef (M.BatteryEntity x y) = mkBattery sprites x y (collision playerRef 16)
     toEntity _ (M.PlayerEntity _ _) = error "Player already processed"
 
diff --git a/src/Game/Entities/Robot.hs b/src/Game/Entities/Robot.hs
index 44fc310..664079a 100644
--- a/src/Game/Entities/Robot.hs
+++ b/src/Game/Entities/Robot.hs
@@ -6,8 +6,8 @@ import Game.Entities.Const
 import Game.Entities.Types
 import qualified Game.Sprites as S
 
-mkRobot :: S.SpriteSheet -> Int -> Int -> Collision -> IsBlocked -> IO Entity
-mkRobot sprites x y playerCollision isBlocked = do
+mkRobot :: S.SpriteSheet -> Int -> Int -> Dir -> Collision -> IsBlocked -> IO Entity
+mkRobot sprites x y d playerCollision isBlocked = do
   s <- S.get sprites "robot"
   pure
     Entity
@@ -16,10 +16,10 @@ mkRobot sprites x y playerCollision isBlocked = do
         y = y,
         delay = frameDelay,
         frame = 0,
-        set = toSpriteSet DirRight,
+        set = toSpriteSet d,
         jumping = False,
         gravity = gravityOff,
-        dir = DirRight,
+        dir = d,
         sprite = s,
         update = updateRobot playerCollision isBlocked,
         destroy = False,
diff --git a/src/Game/Entities/Slime.hs b/src/Game/Entities/Slime.hs
index c102712..7607fb7 100644
--- a/src/Game/Entities/Slime.hs
+++ b/src/Game/Entities/Slime.hs
@@ -6,8 +6,8 @@ import Game.Entities.Const
 import Game.Entities.Types
 import qualified Game.Sprites as S
 
-mkSlime :: S.SpriteSheet -> Int -> Int -> Collision -> IsBlocked -> IO Entity
-mkSlime sprites x y playerCollision isBlocked = do
+mkSlime :: S.SpriteSheet -> Int -> Int -> Dir -> Collision -> IsBlocked -> IO Entity
+mkSlime sprites x y d playerCollision isBlocked = do
   s <- S.get sprites "slime"
   pure
     Entity
@@ -19,7 +19,7 @@ mkSlime sprites x y playerCollision isBlocked = do
         set = 0,
         jumping = False,
         gravity = gravityOff,
-        dir = DirRight,
+        dir = d,
         sprite = s,
         update = updateSlime playerCollision isBlocked,
         destroy = False,
diff --git a/src/Game/Entities/Types.hs b/src/Game/Entities/Types.hs
index 34bddd3..05b419e 100644
--- a/src/Game/Entities/Types.hs
+++ b/src/Game/Entities/Types.hs
@@ -12,7 +12,7 @@ where
 import Data.IORef
 import qualified Game.Sprites as S
 
-data Dir = DirRight | DirLeft deriving (Eq)
+data Dir = DirRight | DirLeft deriving (Eq, Show, Ord)
 
 data Type = TypePlayer | TypePickup | TypeEffect | TypeEnemy deriving (Eq)
 
diff --git a/src/Game/Map.hs b/src/Game/Map.hs
index 3fb72f9..ea20b17 100644
--- a/src/Game/Map.hs
+++ b/src/Game/Map.hs
@@ -14,6 +14,7 @@ where
 
 import Control.Monad
 import Data.Maybe (fromMaybe, mapMaybe)
+import Game.Entities.Types (Dir (..))
 import qualified Game.Utils as U
 import SDL (($=))
 import qualified SDL
@@ -39,8 +40,8 @@ data Layer
 data Object
   = PlayerEntity Int Int
   | BatteryEntity Int Int
-  | SlimeEntity Int Int
-  | RobotEntity Int Int
+  | SlimeEntity Int Int Dir
+  | RobotEntity Int Int Dir
   deriving (Show, Eq, Ord)
 
 data JsonMapData = JsonMapData
@@ -81,9 +82,13 @@ instance JSON Object where
       Just "Battery" ->
         BatteryEntity <$> valFromObj "x" obj <*> valFromObj "y" obj
       Just "Slime" ->
-        SlimeEntity <$> valFromObj "x" obj <*> valFromObj "y" obj
+        SlimeEntity <$> valFromObj "x" obj <*> valFromObj "y" obj <*> pure DirRight
       Just "Robot" ->
-        RobotEntity <$> valFromObj "x" obj <*> valFromObj "y" obj
+        RobotEntity <$> valFromObj "x" obj <*> valFromObj "y" obj <*> pure DirRight
+      Just "Slime-l" ->
+        SlimeEntity <$> valFromObj "x" obj <*> valFromObj "y" obj <*> pure DirLeft
+      Just "Robot-l" ->
+        RobotEntity <$> valFromObj "x" obj <*> valFromObj "y" obj <*> pure DirLeft
       Just (JSString (JSONString s)) -> Error $ "unsupported entity " ++ show s
       e -> Error $ "unsupported entity in " ++ show e
   readJSON _ = mzero