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{-# LANGUAGE DeriveDataTypeable, PatternGuards #-}
module DefaultPlayer ( DefaultPlayer(..)
) where
import qualified Data.Set as S
import Data.Fixed
import Data.Ratio ((%))
import Data.Typeable
import Graphics.Rendering.OpenGL.GL (GLfloat, Vector3(..), Vertex2(..))
import Graphics.Rendering.OpenGL.GL.BeginEnd (unsafeRenderPrimitive, PrimitiveMode(..))
import Graphics.Rendering.OpenGL.GL.CoordTrans (unsafePreservingMatrix, translate, rotate)
import Graphics.Rendering.OpenGL.GL.VertexSpec
import Tank
import GLDriver
import Player
data DefaultPlayer = DefaultPlayer (S.Set Key) Float Float Bool
deriving (Typeable, Show)
instance Player DefaultPlayer where
playerUpdate (DefaultPlayer keys aimx aimy shoot) tank =
let 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)
ax = aimx - (fromRational . toRational . tankX $ tank)
ay = aimy - (fromRational . toRational . tankY $ tank)
move = (x /= 0 || y /= 0)
angle = if move then Just $ fromRational $ round ((atan2 y x)*1000000*180/pi)%1000000 else Nothing
aangle = if (ax /= 0 || ay /= 0) then Just $ fromRational $ round ((atan2 ay ax)*1000000*180/pi)%1000000 else Nothing
in return (DefaultPlayer keys aimx aimy False, angle, move, aangle, shoot)
handleEvent (DefaultPlayer keys aimx aimy shoot) ev
| Just (KeyPressEvent key) <- fromEvent ev = DefaultPlayer (S.insert key keys) aimx aimy shoot
| Just (KeyReleaseEvent key) <- fromEvent ev = DefaultPlayer (S.delete key keys) aimx aimy shoot
| Just (MouseMotionEvent x y) <- fromEvent ev = DefaultPlayer keys x y shoot
| Just (MousePressEvent x y) <- fromEvent ev = DefaultPlayer keys x y True
| otherwise = DefaultPlayer keys aimx aimy shoot
renderPlayer (DefaultPlayer _ aimx aimy _) = unsafePreservingMatrix $ do
translate $ Vector3 (realToFrac aimx) (realToFrac aimy) (0.2 :: GLfloat)
rotate 30 $ Vector3 1 0 (0 :: GLfloat)
unsafeRenderPrimitive Quads $ do
texCoord $ TexCoord2 (0 :: GLfloat) (0 :: GLfloat)
vertex $ Vertex2 (-0.2 :: GLfloat) (-0.2 :: GLfloat)
texCoord $ TexCoord2 (0 :: GLfloat) (1 :: GLfloat)
vertex $ Vertex2 (-0.2 :: GLfloat) (0.2 :: GLfloat)
texCoord $ TexCoord2 (1 :: GLfloat) (1 :: GLfloat)
vertex $ Vertex2 (0.2 :: GLfloat) (0.2 :: GLfloat)
texCoord $ TexCoord2 (1 :: GLfloat) (0 :: GLfloat)
vertex $ Vertex2 (0.2 :: GLfloat) (-0.2 :: GLfloat)
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