35 lines
1.3 KiB
Haskell
35 lines
1.3 KiB
Haskell
{-# 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) Micro Micro
|
|
deriving (Typeable, Show)
|
|
|
|
instance Player DefaultPlayer where
|
|
playerUpdate (DefaultPlayer keys aimx aimy) tank = playerUpdate' keys aimx aimy tank
|
|
|
|
handleEvent (DefaultPlayer keys aimx aimy) ev
|
|
| Just (KeyPressEvent key) <- fromEvent ev = DefaultPlayer (S.insert key keys) aimx aimy
|
|
| Just (KeyReleaseEvent key) <- fromEvent ev = DefaultPlayer (S.delete key keys) aimx aimy
|
|
| otherwise = DefaultPlayer keys aimx aimy
|
|
|
|
|
|
playerUpdate' :: S.Set Key -> Micro -> Micro -> Tank -> (DefaultPlayer, Maybe Micro, Bool, Maybe Micro)
|
|
playerUpdate' keys aimx aimy tank = (DefaultPlayer keys aimx aimy, angle, move, Nothing)
|
|
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
|