diff options
Diffstat (limited to 'src/Chelleport/KeySequence.hs')
| -rw-r--r-- | src/Chelleport/KeySequence.hs | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/src/Chelleport/KeySequence.hs b/src/Chelleport/KeySequence.hs index fd8eaa7..70d56e2 100644 --- a/src/Chelleport/KeySequence.hs +++ b/src/Chelleport/KeySequence.hs @@ -14,8 +14,8 @@ nextChars keySequence cells = [] -> Nothing _ -> Just nextCharactersInSequence where - matches = concatMap (filter $ isPrefixOf keySequence) cells nextCharactersInSequence = uniq $ concatMap (take 1 . drop (length keySequence)) matches + matches = concatMap (filter $ isPrefixOf keySequence) cells findMatchPosition :: KeySequence -> KeyGrid -> Maybe (Int, Int) findMatchPosition keySequence = findWithIndex searchRows 0 @@ -23,16 +23,16 @@ findMatchPosition keySequence = findWithIndex searchRows 0 searchRows = fmap fst . findWithIndex searchInRow 0 searchInRow = guard . (== keySequence) -isValidKey :: SDL.Keycode -> Bool -isValidKey = (`Map.member` keycodeCharMapping) +isAlphabetic :: SDL.Keycode -> Bool +isAlphabetic = (`Map.member` keycodeCharMapping) -- Linear Congruential Generator lcg :: Int -> Int -lcg seed = (a * seed + c) `mod` fromIntegral m +lcg seed = (multiplier * seed + increment) `mod` modulus where - a = 1664525 - c = 1013904223 - m = (2 :: Integer) ^ (32 :: Integer) + multiplier = 1664525 + increment = 1013904223 + modulus = fromIntegral $ (2 :: Integer) ^ (32 :: Integer) getIndexRounded :: Int -> [a] -> a getIndexRounded i ls = ls !! (i `mod` length ls) @@ -54,6 +54,12 @@ generateGrid seed (rows, columns) hintKeys toKeyChar :: SDL.Keycode -> Maybe Char toKeyChar = (`Map.lookup` keycodeCharMapping) +keycodeToInt :: SDL.Keycode -> Maybe Int +keycodeToInt = (`elemIndex` digitKeycodes) + +isKeycodeDigit :: SDL.Keycode -> Bool +isKeycodeDigit = isJust . keycodeToInt + keycodeCharMapping :: Map.Map SDL.Keycode Char keycodeCharMapping = Map.fromList @@ -85,12 +91,6 @@ keycodeCharMapping = (SDL.KeycodeZ, 'Z') ] -keycodeToInt :: SDL.Keycode -> Maybe Int -keycodeToInt = (`elemIndex` digitKeycodes) - -isKeycodeDigit :: SDL.Keycode -> Bool -isKeycodeDigit = isJust . keycodeToInt - digitKeycodes :: [SDL.Keycode] digitKeycodes = [ SDL.Keycode0, |