New generic player implementation

1 files changed, 35 insertions, 0 deletions

diff --git a/DefaultPlayer.hs b/DefaultPlayer.hs
new file mode 100644
index 0000000..351928f
--- /dev/null
+++ b/DefaultPlayer.hs
@@ -0,0 +1,35 @@
+{-# LANGUAGE DeriveDataTypeable, PatternGuards #-}
+
+module DefaultPlayer ( DefaultPlayer(..)
+                     ) where
+
+
+import qualified Data.Set as S
+import Data.Fixed
+import Data.Ratio ((%))
+import Data.Typeable
+
+import GLDriver
+import Player
+import Tank
+
+
+data DefaultPlayer = DefaultPlayer (S.Set Key)
+                     deriving (Typeable, Show)
+
+instance Player DefaultPlayer where
+    playerMovement (DefaultPlayer keys) _ = playerMovement' keys
+    
+    handleEvent (DefaultPlayer keys) ev
+        | Just (KeyPressEvent key)   <- fromEvent ev = DefaultPlayer $ S.insert key keys
+        | Just (KeyReleaseEvent key) <- fromEvent ev = DefaultPlayer $ S.delete key keys
+        | otherwise = DefaultPlayer keys
+
+
+playerMovement' :: S.Set Key -> (DefaultPlayer, Maybe Micro, Bool)
+playerMovement' keys = (DefaultPlayer keys, angle, move)
+    where
+      x = (if (S.member KeyLeft keys) then (-1) else 0) + (if (S.member KeyRight keys) then 1 else 0)
+      y = (if (S.member KeyDown keys) then (-1) else 0) + (if (S.member KeyUp keys) then 1 else 0)
+      move = (x /= 0 || y /= 0)
+      angle = if move then Just $ fromRational $ round ((atan2 y x)*1000000*180/pi)%1000000 else Nothing