pituicat/src/Main.hs

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{-# LANGUAGE OverloadedStrings #-}
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module Main where
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import Affection
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import SDL (($=), get)
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import qualified SDL
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import qualified SDL.Raw.Video as SDL (glSetAttribute)
import qualified SDL.Raw.Enum as SDL
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import qualified Graphics.Rendering.OpenGL as GL
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import Control.Monad (when, void)
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import Control.Concurrent.STM
import qualified Data.Map.Strict as M
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import Data.String (fromString)
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import Linear
-- internal imports
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import StateMachine()
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import Types
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import Classes
import Scenes.Test
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instance Affectionate GameData where
preLoop = preLoad
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handleEvents = handle
update = Main.update
draw = Main.draw
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loadState = Main.init
cleanUp _ = return ()
hasNextStep = liftIO . atomically . readTVar . gameRunning
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main :: IO ()
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main = do
let config = AffectionConfig
{ initComponents = All
, windowTitle = "Pituicat"
, windowConfigs =
[ ( 0
, SDL.defaultWindow
{ SDL.windowInitialSize = V2 800 600
, SDL.windowResizable = True
, SDL.windowGraphicsContext = SDL.OpenGLContext SDL.defaultOpenGL
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{ SDL.glProfile = SDL.Core SDL.Normal 4 0
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}
}
, SDL.Windowed
)
]
} :: AffectionConfig GameData
withAffection config
preLoad :: GameData -> Affection ()
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preLoad gd = do
void $ partSubscribe
(subKeyboard $ gameSubsystems gd)
(\(MsgKeyboardEvent time win motion False keysym) -> do
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translator <- liftIO $ atomically $ readTVar (gameActionTranslation gd)
case
((SDL.keysymScancode keysym, SDL.keysymModifier keysym) `M.lookup`
translator)
of
Just action ->
partEmit
(subTranslator $ gameSubsystems gd)
(TranslatorMessage action time motion)
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Nothing ->
return ()
)
void $ partSubscribe
(subWindow $ gameSubsystems gd)
(\(MsgWindowClose time win) ->
atomically $ writeTVar (gameRunning gd) False
)
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handle :: GameData -> [SDL.EventPayload] -> Affection ()
handle gd evs = do
state <- liftIO (atomically $ readTVar $ gameState gd)
smEvent state gd evs
update :: GameData -> Double -> Affection ()
update gd dt = do
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liftIO ((logIO Verbose) =<< (atomically $
(("Progress: " <>) . snd) <$> (readTMVar $ gameStateLoadProgress gd)))
state <- liftIO $ atomically $ readTVar $ gameState gd
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isStagePresent <- liftIO $ atomically $ fmap not $ isEmptyTMVar $ gameScene gd
if isStagePresent
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then do
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liftIO $ logIO Verbose "Stage is present"
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(Stage sceneContainer) <- liftIO $ atomically $ readTMVar $ gameScene gd
sceneLoaded <- isSceneLoaded sceneContainer
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if not sceneLoaded
then do
liftIO $ logIO Verbose "Loading scene"
smLoad state gd
else
smUpdate state gd dt
else
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liftIO $ logIO Error "No Stage to play on"
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draw :: GameData -> Affection ()
draw gd = do
state <- liftIO (atomically $ readTVar $ gameState gd)
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liftIO $ logIO Verbose (fromString $ "now drawing: " <> show state)
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GL.clearColor $= GL.Color4 0 0 0 1
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smDraw state gd
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err <- SDL.get GL.errors
when (not $ null err) (liftIO $ logIO Error ("loop errors: " <> fromString (show err)))
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init :: IO GameData
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init = do
GL.blend $= GL.Enabled
GL.blendFunc $= (GL.SrcAlpha, GL.OneMinusSrcAlpha)
void $ SDL.glSetAttribute SDL.SDL_GL_SHARE_WITH_CURRENT_CONTEXT 1
GameData
<$> (newTMVarIO =<< (Stage <$> (initScene :: IO Test)))
<*> newTVarIO Loading
<*> newTMVarIO (0, "Ohai!")
<*> (Subsystems
<$> (SubWindow <$> newTVarIO [])
<*> (SubMouse <$> newTVarIO [])
<*> (SubKeyboard <$> newTVarIO [])
<*> (SubTranslator <$> newTVarIO [])
)
<*> newTVarIO (M.fromList [])
<*> newTVarIO True
<*> newTVarIO Nothing
<*> newTVarIO Nothing