Game.LambdaHack.Client.UI.Frontend.Sdl

Text frontend based on SDL2.

Documentation

startup :: ClientOptions -> IO RawFrontend

Set up and start the main loop providing input and output.

Apparently some SDL backends are not thread-safe (https:/wiki.libsdl.orgFAQDevelopment), so we stick to main thread.

frontendName :: String

The name of the frontend.

Internal operations

type FontAtlas = EnumMap AttrCharW32 Texture

data FrontendSession

Session data maintained by the frontend.

Constructors

FrontendSession

Fields

• swindow :: Window
• srenderer :: Renderer
• sfont :: Font
• satlas :: IORef FontAtlas
• stexture :: IORef Texture
• spreviousFrame :: IORef SingleFrame
• sforcedShutdown :: IORef Bool
• sdisplayPermitted :: MVar Bool

startupFun :: ClientOptions -> MVar RawFrontend -> IO ()

shutdown :: FrontendSession -> IO ()

forceShutdown :: FrontendSession -> IO ()

display

Arguments

:: ClientOptions

-> FrontendSession

frontend session data

-> SingleFrame

the screen frame to draw

-> IO ()

Add a frame to be drawn.

displayNoLock

Arguments

:: ClientOptions

-> FrontendSession

frontend session data

-> SingleFrame

the screen frame to draw

-> IO ()

modTranslate :: KeyModifier -> Modifier

Translates modifiers to our own encoding, ignoring Shift.

keyTranslate :: Bool -> Keycode -> Key

colorToRGBA :: Color -> V4 Word8