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module Main where
import Pong
import Spear.App
import Spear.Game
import Spear.Math.AABB
import Spear.Math.Matrix4 as Matrix4 hiding (position)
import Spear.Math.Spatial
import Spear.Math.Spatial2
import Spear.Math.Vector
import Spear.Physics.Collision
import Spear.Render.Core.Pipeline
import Spear.Render.Core.State
import Spear.Render.Immediate
import Spear.Sound.Sound
import Spear.Sound.State
import Spear.Window
import Control.Monad (when)
import Data.Maybe (mapMaybe)
data GameState = GameState
{ context :: AppContext
, renderCoreState :: RenderCoreState
, immRenderState :: ImmRenderState
, viewProjection :: Matrix4
, backgroundMusic :: SoundSource
, world :: [GameObject]
}
options = defaultAppOptions { title = "Pong" }
app = App options initGame endGame step render resize
main :: IO ()
main = runApp app
initGame :: AppContext -> Game () GameState
initGame context = do
(immRenderState, renderCoreState) <- runSiblingGame newImmRenderer newRenderCoreState
(music, soundState') <- flip runSiblingGame (appSoundState context) $ do
musicBuffer <- loadAudioFile "/home/jeanne/Casual Tiki Party Main.wav"
music <- makeSoundSource
liftIO $ do
setSoundSourceBuffer music musicBuffer
setSoundLoopMode music Loop
playSounds [music]
return music
let context' = context { appSoundState = soundState' }
return $ GameState context' renderCoreState immRenderState Matrix4.id music newWorld
endGame :: Game GameState ()
endGame = do
game <- get
runSubGame' (deleteImmRenderer $ immRenderState game) (renderCoreState game)
step :: Elapsed -> Dt -> [InputEvent] -> Game GameState Bool
step elapsed dt inputEvents = do
gameState <- get
events <- processInput (appWindow . context $ gameState)
--when (events /= []) $ liftIO . putStrLn $ show events
modify $ \gameState -> gameState
{ world = stepWorld (realToFrac elapsed) (realToFrac dt) events (world gameState)
}
return (not $ exitRequested inputEvents)
processInput :: Window -> Game GameState [GameEvent]
processInput window = processKeys window
[ (KEY_A, MoveLeft)
, (KEY_D, MoveRight)
]
exitRequested = elem (KeyDown KEY_ESC)
render :: Game GameState ()
render = do
gameState <- get
immRenderState' <- flip execSubGame (immRenderState gameState) $ do
immStart
immSetViewProjectionMatrix (viewProjection gameState)
-- Clear the background to a different colour than the playable area to make
-- the latter distinguishable.
liftIO $ do
setClearColour (0.2, 0.2, 0.2, 0.0)
clearBuffers [ColourBuffer]
render' $ world gameState
immEnd
put $ gameState { immRenderState = immRenderState' }
render' :: [GameObject] -> Game ImmRenderState ()
render' world = do
immLoadIdentity
renderBackground
-- Draw objects.
immSetColour (vec4 1.0 1.0 1.0 1.0)
mapM_ renderGO world
renderBackground :: Game ImmRenderState ()
renderBackground =
let pmin = 0 :: Float
pmax = 1 :: Float
in do
immSetColour (vec4 0.0 0.25 0.41 1.0)
immDrawQuads2d [
(vec2 pmin pmin
,vec2 pmax pmin
,vec2 pmax pmax
,vec2 pmin pmax)]
renderGO :: GameObject -> Game ImmRenderState ()
renderGO go =
let (AABB2Volume (AABB2 (Vector2 xmin ymin) (Vector2 xmax ymax))) = boundingVolume go
in
immDrawQuads2d [
(vec2 xmin ymin
,vec2 xmax ymin
,vec2 xmax ymax
,vec2 xmin ymax)]
resize :: WindowEvent -> Game GameState ()
resize (ResizeEvent w h) =
let r = fromIntegral w / fromIntegral h
pad = if r > 1 then (r-1) / 2 else (1/r - 1) / 2
left = if r > 1 then -pad else 0
right = if r > 1 then 1 + pad else 1
bottom = if r > 1 then 0 else -pad
top = if r > 1 then 1 else 1 + pad
in do
liftIO $ setViewport 0 0 w h
modify $ \state -> state {
viewProjection = Matrix4.ortho left right bottom top (-1) 1
}
|
