{-# LANGUAGE ExplicitForAll #-}

{-| This game mode lets you manage your own input. Pressing ESC will not abort the program.
  You also don't get automatic pan and zoom controls like with `display`.
-}
module Brillo.Interface.IO.Game (
  module Brillo.Data.Display,
  module Brillo.Data.Picture,
  module Brillo.Data.Color,
  playIO,
  Event (..),
  Key (..),
  SpecialKey (..),
  MouseButton (..),
  KeyState (..),
  Modifiers (..),
)
where

import Brillo.Data.Color
import Brillo.Data.Display
import Brillo.Data.Picture
import Brillo.Internals.Interface.Backend
import Brillo.Internals.Interface.Game


-- | Play a game in a window, using IO actions to build the pictures.
playIO
  :: forall world
   . Display
  -- ^ Display mode.
  -> Color
  -- ^ Background color.
  -> Int
  -- ^ Number of simulation steps to take for each second of real time.
  -> world
  -- ^ The initial world.
  -> (world -> IO Picture)
  -- ^ An action to convert the world a picture.
  -> (Event -> world -> IO world)
  -- ^ A function to handle input events.
  -> (Float -> world -> IO world)
  -- ^ A function to step the world one iteration.
  --   It is passed the period of time (in seconds) needing to be advanced.
  -> IO ()
playIO :: forall world.
Display
-> Color
-> Int
-> world
-> (world -> IO Picture)
-> (Event -> world -> IO world)
-> (Float -> world -> IO world)
-> IO ()
playIO
  Display
display
  Color
backColor
  Int
simResolution
  world
worldStart
  world -> IO Picture
worldToPicture
  Event -> world -> IO world
worldHandleEvent
  Float -> world -> IO world
worldAdvance =
    GLFWState
-> Display
-> Color
-> Int
-> world
-> (world -> IO Picture)
-> (Event -> world -> IO world)
-> (Float -> world -> IO world)
-> Bool
-> IO ()
forall world a.
Backend a =>
a
-> Display
-> Color
-> Int
-> world
-> (world -> IO Picture)
-> (Event -> world -> IO world)
-> (Float -> world -> IO world)
-> Bool
-> IO ()
playWithBackendIO
      GLFWState
defaultBackendState
      Display
display
      Color
backColor
      Int
simResolution
      world
worldStart
      world -> IO Picture
worldToPicture
      Event -> world -> IO world
worldHandleEvent
      Float -> world -> IO world
worldAdvance
      Bool
False