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{-# LANGUAGE MultiParamTypeClasses #-}
module Chelleport where
import Chelleport.AppShell (MonadAppShell (hideWindow, shutdownApp), setupAppShell)
import Chelleport.Context (initializeContext)
import Chelleport.Control (MonadControl (getMousePointerPosition, moveMousePointer, pressMouseButton), directionalIncrement, eventToKeycode, isKeyPress, isKeyPressWith, isKeyReleaseWith)
import Chelleport.Draw (MonadDraw, cellSize)
import Chelleport.KeySequence (findMatchPosition, generateGrid, isValidKey, nextChars, toKeyChar)
import Chelleport.Types
import Chelleport.Utils (intToCInt)
import qualified Chelleport.View
import Control.Monad.IO.Class (MonadIO)
import Control.Monad.Reader (ReaderT (runReaderT))
import Data.List ((\\))
import Data.Maybe (fromMaybe, isJust)
import qualified SDL
runEff ::
(MonadIO m) =>
DrawContext ->
AppM m x ->
m x
runEff ctx action = runReaderT (runAppM action) ctx
run :: IO ()
run = do
ctx <- initializeContext
setupAppShell
ctx
(runEff ctx initialState)
(\state -> runEff ctx . update state)
(const eventHandler)
(runEff ctx . Chelleport.View.render)
initialState :: (MonadIO m) => m State
initialState = do
let cells = fromMaybe (pure undefined) $ generateGrid 0 (rows, columns) hintKeys
pure $
State
{ stateGrid = cells,
stateKeySequence = [],
stateIsMatched = False,
stateIsShiftPressed = False
}
where
rows = 9
columns = 16
hintKeys = ['A' .. 'Z'] \\ "Q"
eventHandler :: SDL.Event -> Maybe AppAction
eventHandler event =
case SDL.eventPayload event of
SDL.QuitEvent -> Just ShutdownApp
SDL.KeyboardEvent ev
| isKeyPressWith ev SDL.KeycodeQ -> Just ShutdownApp
| isKeyPressWith ev SDL.KeycodeEscape -> Just ShutdownApp
| isKeyPressWith ev SDL.KeycodeSpace -> Just TriggerLeftClick
| isKeyPressWith ev SDL.KeycodeTab -> Just ResetKeys
| isKeyPress ev && isValidKey (eventToKeycode ev) ->
Just $ HandleKeyInput $ eventToKeycode ev
| isKeyPressWith ev SDL.KeycodeLShift || isKeyPressWith ev SDL.KeycodeRShift ->
Just $ UpdateShiftState True
| isKeyReleaseWith ev SDL.KeycodeLShift || isKeyReleaseWith ev SDL.KeycodeRShift ->
Just $ UpdateShiftState False
_ -> Nothing
update ::
(MonadAppShell m, MonadDraw m, MonadControl m) =>
State ->
AppAction ->
m (State, Maybe AppAction)
-- Act on key inputs
update state (HandleKeyInput key) = do
case (toKeyChar key, validChars) of
(Just keyChar, Just validChars')
| stateIsMatched state && keyChar `elem` ("HJKL" :: String) -> do
incr <- incrementValue
let action = IncrementMouseCursor $ directionalIncrement incr keyChar
pure (state, Just action)
| keyChar `elem` validChars' -> do
let newKeySequence = stateKeySequence state ++ [keyChar]
let matchPosition = findMatchPosition newKeySequence $ stateGrid state
let state' = state {stateKeySequence = newKeySequence, stateIsMatched = isJust matchPosition}
pure (state', MoveMousePosition <$> matchPosition)
_ -> pure (state, Nothing)
where
validChars = nextChars (stateKeySequence state) (stateGrid state)
incrementValue = do
(wcell, hcell) <- cellSize state
if stateIsShiftPressed state
then pure (wcell `div` 4, hcell `div` 4)
else pure (wcell `div` 16, hcell `div` 16)
-- Move mouse incrementally
update state (IncrementMouseCursor (incX, incY)) = do
(curX, curY) <- getMousePointerPosition
moveMousePointer (curX + intToCInt incX) (curY + intToCInt incY)
pure (state, Nothing)
-- Move mouse to given position
update state (MoveMousePosition (row, col)) = do
(x, y) <- getPosition
moveMousePointer x y
pure (state, Nothing)
where
getPosition = do
(wcell, hcell) <- cellSize state
let x = (wcell `div` 2) + wcell * intToCInt col
let y = (hcell `div` 2) + hcell * intToCInt row
pure (x, y)
-- Reset entered key sequence and state
update state ResetKeys = do
pure (state {stateKeySequence = [], stateIsMatched = False}, Nothing)
-- Trigger left click
update state TriggerLeftClick = do
hideWindow
pressMouseButton LeftClick
pure (state, Just ShutdownApp)
-- Cleanup everything and exit
update state ShutdownApp = do
shutdownApp
pure (state, Nothing)
-- Set/unset whether shift is pressed
update state (UpdateShiftState shift) =
pure (state {stateIsShiftPressed = shift}, Nothing)
|
