pituicat/src/Main.hs
2021-01-14 23:08:57 +01:00

154 lines
4.4 KiB
Haskell

{-# LANGUAGE OverloadedStrings #-}
module Main where
import Affection
import SDL (($=), get)
import qualified SDL
import qualified SDL.Raw.Video as SDL (glSetAttribute)
import qualified SDL.Raw.Enum as SDL
import qualified Graphics.Rendering.OpenGL as GL
import Control.Monad (when, void)
import Control.Concurrent.STM
import qualified Data.Map.Strict as M
import Data.String (fromString)
import Linear
-- internal imports
import StateMachine()
import Types
import Classes
import Util
import Scenes.Test
instance Affectionate GameData where
preLoop = preLoad
handleEvents = handle
update = Main.update
draw = Main.draw
loadState = Main.init
cleanUp _ = return ()
hasNextStep = liftIO . atomically . readTVar . gameRunning
main :: IO ()
main = do
let config = AffectionConfig
{ initComponents = All
, windowTitle = "Pituicat"
, windowConfigs =
[ ( 0
, SDL.defaultWindow
{ SDL.windowInitialSize = V2 800 600
, SDL.windowResizable = False
, SDL.windowGraphicsContext = SDL.OpenGLContext SDL.defaultOpenGL
{ SDL.glProfile = SDL.Core SDL.Normal 4 0
}
}
, SDL.Windowed
)
]
} :: AffectionConfig GameData
withAffection config
preLoad :: GameData -> Affection ()
preLoad gd = do
translatorUUID <- partSubscribe
(subKeyboard $ gameSubsystems gd)
(\mesg ->
case mesg of
(MsgKeyboardEvent time win motion False keysym) -> do
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)
Nothing ->
globalKeyHandle gd mesg
_ ->
return ()
)
windowCloseUUID <- partSubscribe
(subWindow $ gameSubsystems gd)
(\mesg -> case mesg of
MsgWindowClose time win ->
liftIO $ atomically $ writeTVar (gameRunning gd) False
MsgWindowResize _ _ _ ->
fitViewport (800 / 600) mesg
_ ->
return ()
)
liftIO $ atomically $ writeTVar
(gameGeneralClean gd)
[translatorUUID, windowCloseUUID]
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
loadProgress <- liftIO $ atomically $ readTMVar $ gameStateLoadProgress gd
when (fst loadProgress < 1) $
liftIO (logIO Verbose ("Progress: " <> snd loadProgress))
state <- liftIO $ atomically $ readTVar $ gameState gd
isStagePresent <- liftIO $ atomically $ fmap not $ isEmptyTMVar $ gameScene gd
if isStagePresent
then do
liftIO $ logIO Verbose "Stage is present"
(Stage sceneContainer) <- liftIO $ atomically $ readTMVar $ gameScene gd
sceneLoaded <- isSceneLoaded sceneContainer
if not sceneLoaded
then do
liftIO $ logIO Verbose "Loading scene"
smLoad state gd
evHandler <- partSubscribe
(subTranslator $ gameSubsystems gd)
(onEvents sceneContainer)
liftIO $ atomically $ writeTVar (gameSceneClean gd) (Just evHandler)
else
smUpdate state gd dt
else
liftIO $ logIO Error "No Stage to play on"
draw :: GameData -> Affection ()
draw gd = do
state <- liftIO (atomically $ readTVar $ gameState gd)
liftIO $ logIO Verbose (fromString $ "now drawing: " <> show state)
GL.clearColor $= GL.Color4 0 0 0 1
smDraw state gd
err <- SDL.get GL.errors
when (not $ null err) (liftIO $ logIO Error ("loop errors: " <> fromString (show err)))
init :: IO GameData
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 defaultTranslation
<*> newTVarIO True
<*> newTVarIO Nothing
<*> newTVarIO Nothing
<*> newTVarIO []
<*> newTVarIO Nothing