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introduce resourcet

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nek0 2022-07-10 04:18:22 +02:00
parent 60d38217c8
commit 1b8d754cd6
5 changed files with 133 additions and 75 deletions
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1
affection.cabal
View file

@ -117,6 +117,7 @@ library
, stm
, uuid
, vector
, resourcet
-- This example shows the message system. only makes sense when compiling with
-- verbose flag.

2
cabal.project
View file

@ -1,4 +1,4 @@
constraints: affection +verbose
constraints: affection +verbose +examples
profiling: true
packages:
./.

107
src/Affection.hs
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@ -1,6 +1,5 @@
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE Strict #-}
{-# LANGUAGE ExplicitForAll #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE TypeApplications #-}
@ -30,6 +29,7 @@ import System.Clock
import Control.Monad.Loops
import Control.Monad.State.Strict
import Control.Monad.Trans.Resource
-- internal imports
@ -47,47 +47,83 @@ withAffection
:: forall us. (Affectionate us)
=> AffectionConfig us -- ^ Configuration of the Game and its engine.
-> IO ()
withAffection AffectionConfig{..} = do
withAffection AffectionConfig{..} = runResourceT $ do
liftIO $ logIO Debug "Affection starting"
liftIO $ logIO Debug "Initializing SDL"
-- intialiaze SDL
case initComponents of
All ->
SDL.initializeAll
Only is ->
SDL.initialize is
-- give SDL render quality
SDL.HintRenderScaleQuality SDL.$= SDL.ScaleLinear
-- just checking…
do
renderQuality <- SDL.get SDL.HintRenderScaleQuality
when (renderQuality /= SDL.ScaleLinear) $
logIO Warn "Linear texture filtering not enabled!"
renderQuality <- SDL.get SDL.HintRenderScaleQuality
when (renderQuality /= SDL.ScaleLinear) $
liftIO $ logIO Warn "Linear texture filtering not enabled!"
void $ liftIO (logIO Debug . fromString . show <$> (SDL.version :: IO (Integer, Integer, Integer)))
-- construct window
liftIO $ logIO Debug "Creating Window(s)"
windows <- zip3 (map (\(x,_,_) -> x) windowConfigs) <$>
windows <-
mapM
(SDL.createWindow windowTitle . (\(_,y,_) -> y))
windowConfigs <*>
pure (map (\(_,_,z) -> z) windowConfigs)
(\(_, sdlWindowConfig, mode) -> do
(windowKey, window) <-
allocate
(SDL.createWindow windowTitle sdlWindowConfig)
(\window -> do
logIO Debug "Destroying Window"
SDL.destroyWindow window
)
return $ AffectionWindow window windowKey mode
)
windowConfigs
-- Show windows
mapM_ (SDL.showWindow . awWindow) windows
-- set modes of windows
mapM_ (\(AffectionWindow window _ mode) -> SDL.setWindowMode window mode) windows
-- Make GL context shareable
void $ SDL.glSetAttribute SDL.SDL_GL_SHARE_WITH_CURRENT_CONTEXT 1
-- Create OpenGL contexts
contexts <-
mapM
(\(AffectionWindow window _ _) -> do
(contextKey, context) <-
allocate
(SDL.glCreateContext window)
(\context -> do
logIO Debug "Destroying context"
SDL.glDeleteContext context
)
return $ AffectionContext context contextKey
)
windows
mapM_ (SDL.showWindow . (\(_,y,_) -> y)) windows
_ <- SDL.glSetAttribute SDL.SDL_GL_SHARE_WITH_CURRENT_CONTEXT 1
contexts <- zip (map (\(x,_,_) -> x) windows) <$>
mapM (SDL.glCreateContext . (\(_,y,_) -> y)) windows
mapM_ (\w -> SDL.setWindowMode ((\(_,y,_) -> y) w) ((\(_,_,z) -> z) w)) windows
-- sync updates with monitor
-- SDL.swapInterval $= SDL.SynchronizedUpdates -- <- causes Problems with windows
liftIO $ logIO Debug "Getting Time"
-- print current used GL Version
version <- peekArray0 (0 :: Word8) =<< GLRaw.glGetString GLRaw.GL_VERSION
print (B.pack version)
version <- liftIO $ peekArray0 (0 :: Word8) =<< GLRaw.glGetString GLRaw.GL_VERSION
liftIO $ print (B.pack version)
-- get current time
execTime <- getTime Monotonic
liftIO $ logIO Debug "Getting Time"
execTime <- liftIO $ getTime Monotonic
liftIO $ logIO Debug "Loading initial data container"
-- construct game data object from provided Affectionate instance
gameData <- loadState @us
(gameDataKey, gameData) <-
allocate
(liftIO $ loadState @us)
(liftIO . cleanUp)
-- build state container
let initContainer = AffectionData
{ drawWindows = windows
@ -97,11 +133,12 @@ withAffection AffectionConfig{..} = do
, sysTime = execTime
, pausedTime = False
}
-- initialize and run state
(_, _) <- runStateT
(A.runState
void $ liftIO $ runAffection initContainer
(do
liftIO $ logIO Debug "Running Pre-Loop stage"
-- run preLoop function from Affectionate
preLoop gameData
liftIO $ logIO Debug "Starting Loop"
@ -109,31 +146,40 @@ withAffection AffectionConfig{..} = do
(do
-- get state
ad <- get
-- Measure time difference form last run
now <- liftIO $ getTime Monotonic
let lastTime = sysTime ad
-- compute dt and update elapsedTime
let dt = fromIntegral
(toNanoSecs $ diffTimeSpec lastTime now) / (10 ^ (9 :: Int))
ne = elapsedTime ad + dt
-- update state data object with new time values
put $ ad
{ elapsedTime = ne
, deltaTime = dt
}
-- poll events
liftIO SDL.pumpEvents
evs <- preHandleEvents =<< liftIO SDL.pollEvents
-- handle events
handleEvents gameData evs
-- execute user defined update loop
unless (pausedTime ad) (update gameData dt)
-- clear GL buffer >> execute user defined draw loop >> flush GL buffer
liftIO $ GL.clear [GL.ColorBuffer, GL.DepthBuffer, GL.StencilBuffer]
draw gameData
liftIO GL.flush
-- actual displaying of newly drawn frame
mapM_ (SDL.glSwapWindow . (\(_,y,_) -> y)) windows
mapM_ (SDL.glSwapWindow . awWindow) windows
-- save new time
ad3 <- get
when (sysTime ad == sysTime ad3) (
@ -143,11 +189,16 @@ withAffection AffectionConfig{..} = do
)
)
)
) initContainer
-- Cleanup works
liftIO $ logIO Debug "Loop ended. Cleaning"
cleanUp gameData
liftIO $ logIO Debug "Destroying Window"
mapM_ (SDL.glDeleteContext . snd) contexts
mapM_ (SDL.destroyWindow . (\(_,y,_) -> y)) windows
release gameDataKey
-- mapM_ (SDL.glDeleteContext . snd) contexts
-- mapM_ (SDL.destroyWindow . (\(_,y,_) -> y)) windows
-- SDL.quit -- <- This causes segfaults depending on hardware
liftIO $ logIO Debug "This is the end"
runAffection
:: AffectionData
-> AffectionState AffectionData ResIO a
-> IO (a, AffectionData)
runAffection initialState a = runResourceT $ runStateT (A.runState a) initialState

43
src/Affection/Types.hs
View file

@ -5,6 +5,8 @@ module Affection.Types
, AffectionData(..)
, AffectionStateInner
, AffectionState(..)
, AffectionWindow(..)
, AffectionContext(..)
, InitComponents(..)
, Angle
-- | SDL reexports
@ -23,6 +25,7 @@ import qualified Data.Text as T
import Control.Monad.IO.Class
import Control.Monad.State.Strict
import Control.Monad.Trans.Resource
import qualified Control.Monad.Parallel as MP
import System.Clock (TimeSpec)
@ -50,35 +53,35 @@ data InitComponents
-- | Main type for defining the look, feel and action of the whole application.
data AffectionData = AffectionData
{ drawWindows ::
[
( Word -- --^ Window identifier
, SDL.Window -- --^ Window linked with identifier
, SDL.WindowMode -- -- ^ current screen mode
)
] -- ^ SDL windows
, glContext ::
[
( Word -- --^ Window identifier
, SDL.GLContext -- --^ Associated OpenGL context
)
] -- ^ OpenGL rendering contexts
, elapsedTime :: Double -- ^ Elapsed time in seconds
, deltaTime :: Double -- ^ Elapsed time in seconds since last tick
, sysTime :: TimeSpec -- ^ System time (NOT the time on the clock)
, pausedTime :: Bool -- ^ Should the update loop be executed?
{ drawWindows :: [ AffectionWindow ] -- ^ SDL windows
, glContext :: [ AffectionContext ] -- ^ OpenGL rendering contexts
, elapsedTime :: Double -- ^ Elapsed time in seconds
, deltaTime :: Double -- ^ Elapsed time in seconds since last tick
, sysTime :: TimeSpec -- ^ System time (NOT the time on the clock)
, pausedTime :: Bool -- ^ Should the update loop be executed?
}
-- | Inner 'StateT' monad for the update state
type AffectionStateInner sd a = StateT sd a
type AffectionStateInner sd m = StateT sd m
-- | Affection's state monad
newtype AffectionState sd m a = AffectionState
{ runState :: AffectionStateInner sd m a }
deriving (Functor, Applicative, Monad, MonadIO, MonadState sd)
deriving (Functor, Applicative, Monad, MonadIO, MonadState sd, MonadResource)
instance MP.MonadParallel m => MP.MonadParallel (AffectionState sd m)
type Affection a = AffectionState AffectionData IO a
type Affection a = AffectionState AffectionData ResIO a
type Angle = Double
data AffectionWindow = AffectionWindow
{ awWindow :: SDL.Window
, awReleaseKey :: ReleaseKey
, awMode :: SDL.WindowMode
}
data AffectionContext = AffectionContext
{ acContext :: SDL.GLContext
, acReleaseKey :: ReleaseKey
}

55
src/Affection/Util.hs
View file

@ -39,32 +39,35 @@ getDelta = gets deltaTime
toggleScreen :: Word -> Affection ()
toggleScreen windowIdent = do
ad <- get
let mwindow = find (\(ident, _, _) -> ident == windowIdent) (drawWindows ad)
case mwindow of
Just (ident, window, mode) -> do
newMode <- case mode of
SDL.FullscreenDesktop -> do
SDL.setWindowMode window SDL.Windowed
return SDL.Windowed
SDL.Windowed -> do
SDL.setWindowMode window SDL.FullscreenDesktop
return SDL.FullscreenDesktop
x -> do
liftIO $ logIO Warn ("Unexpected window mode: " <> fromString (show x))
return x
now <- liftIO $ getTime Monotonic
put ad
{ sysTime = now
, drawWindows = map
(\e@(lid, win, _) ->
if lid == ident
then (lid, win, newMode)
else e
)
(drawWindows ad)
}
Nothing -> do
liftIO $ logIO Warn ("No window found with ident " <> fromString (show windowIdent))
(stop, alteredWindowList) <- foldM
(\(stop, resWindows) (num, aw@(AffectionWindow window _ mode)) -> do
if stop || num == windowIdent
then do
newMode <- case mode of
SDL.FullscreenDesktop -> do
liftIO $ SDL.setWindowMode window SDL.Windowed
return SDL.Windowed
SDL.Windowed -> do
liftIO $ SDL.setWindowMode window SDL.FullscreenDesktop
return SDL.FullscreenDesktop
x -> do
liftIO $ logIO Warn ("Unexpected window mode: " <> fromString (show x))
return x
return (True, resWindows ++ [aw { awMode = newMode }])
else
return (stop, resWindows ++ [aw])
)
(False, [])
(zip [0..] (drawWindows ad))
if stop
then do
now <- liftIO $ getTime Monotonic
put ad
{ sysTime = now
, drawWindows = alteredWindowList
}
else
liftIO $ logIO Warn ("No window found with ident " <> fromString (show windowIdent))
-- | Fit the GL Viewport to Window size
fitViewport