LambdaHack-0.2.6: A roguelike game engine in early and active development

Safe HaskellNone




Display game data on the screen and receive user input using one of the available raw frontends and derived operations.


Re-exported part of the raw frontend

data FrontendSession Source

Session data maintained by the frontend.

startup :: String -> (FrontendSession -> IO ()) -> IO ()Source

Spawns the gtk input and output thread, which spawns all the other required threads. We create a separate thread for gtk to minimize communication with the heavy main thread. The other threads have to be spawned after gtk is initialized, because they call postGUIAsync, and need sview and stags.

frontendName :: StringSource

The name of the frontend.

nextEvent :: FrontendSession -> Maybe Bool -> IO (Key, Modifier)Source

Input key via the frontend. Fail if there is no frame to show to the player as a prompt for the keypress.

Derived operations

displayFrame :: FrontendSession -> Bool -> Maybe SingleFrame -> IO ()Source

Push a frame or a single frame's worth of delay to the frame queue.

promptGetKey :: FrontendSession -> [(Key, Modifier)] -> SingleFrame -> IO (Key, Modifier)Source

Display a prompt, wait for any of the specified keys (for any key, if the list is empty). Repeat if an unexpected key received.