packages feed

intricacy-0.7.1.1: InteractUtil.hs

-- This file is part of Intricacy
-- Copyright (C) 2013 Martin Bays <mbays@sdf.org>
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of version 3 of the GNU General Public License as
-- published by the Free Software Foundation, or any later version.
--
-- You should have received a copy of the GNU General Public License
-- along with this program.  If not, see http://www.gnu.org/licenses/.

module InteractUtil where

import Control.Monad.State
import Control.Applicative
import qualified Data.Map as Map
import Data.Map (Map)
import Control.Monad.Writer
import Control.Monad.Trans.Maybe
import Data.Maybe
import Data.Char
import Data.List
import System.Directory
import Data.Array
import Data.Function (on)

import Hex
import Command
import Physics
import Mundanities
import GameStateTypes
import EditGameState
import Frame
import Lock
import Protocol
import Metagame
import MainState
import InputMode
import Util

checkWon :: UIMonad uiM => MainStateT uiM ()
checkWon = do
    st <- gets psCurrentState
    frame <- gets psFrame
    wasSolved <- gets psSolved
    let solved = checkSolved (frame,st)
    when (solved /= wasSolved) $ do
        modify $ \ps -> ps {psSolved = solved}
        obdg <- lift $ getUIBinding IMPlay CmdOpen
        lift $ if solved then do
                drawMessage $ "Unlocked! '"++obdg++"' to open."
                reportAlerts st [AlertUnlocked]
            else drawMessage ""

doForce force = do
    st:_ <- gets esGameStateStack
    let (st',alerts) = runWriter $ resolveSinglePlForce force st
    lift (reportAlerts st' alerts) >> pushEState st'
drawTile pos tile painting = do
    modify $ \es -> es {selectedPiece = Nothing}
    lastMP <- gets lastModPos
    modifyEState $ modTile tile pos lastMP painting
    modify $ \es -> es {lastModPos = pos}
paintTilePath frame tile from to = if from == to
    then modify $ \es -> es {lastModPos = to}
    else do
        let from' = (hexVec2HexDirOrZero $ to-^from) +^ from
        when (inEditable frame from') $ drawTile from' tile True
        paintTilePath frame tile from' to

pushEState :: UIMonad uiM => GameState -> MainStateT uiM ()
pushEState st = do
    st':sts <- gets esGameStateStack
    when (st' /= st) $ modify $ \es -> es {esGameStateStack = st:st':sts, esUndoneStack = []}
pushPState :: UIMonad uiM => (GameState,PlayerMove) -> MainStateT uiM ()
pushPState (st,pm) = do
    st' <- gets psCurrentState
    stms <- gets psGameStateMoveStack
    when (st' /= st) $ modify $ \ps -> ps {psCurrentState = st,
            psGameStateMoveStack = (st',pm):stms, psUndoneStack = []}
modifyEState :: UIMonad uiM => (GameState -> GameState) -> MainStateT uiM ()
modifyEState f = do
    st:_ <- gets esGameStateStack
    pushEState $ f st

doPhysicsTick :: UIMonad uiM => PlayerMove -> GameState -> uiM (GameState, [Alert])
doPhysicsTick pm st =
    let r@(st',alerts) = runWriter $ physicsTick pm st in
    reportAlerts st' alerts >> return r

nextLock :: Bool -> FilePath -> IO FilePath
nextLock newer path = do
    lockdir <- confFilePath "locks"
    time <- (Just <$> (fullLockPath path >>= getModificationTime))
        `catchIO` const (return Nothing)
    paths <- getDirContentsRec lockdir
    maybe path (drop (length lockdir + 1) . fst) . listToMaybe .
        (if newer then id else reverse) . sortBy (compare `on` snd) .
        filter (maybe (const True)
            (\x y -> (if newer then (<) else (>)) x (snd y)) time) <$>
        (\p -> (,) p <$> getModificationTime p) `mapM` paths

hasLocks :: IO Bool
hasLocks = do
    lockdir <- confFilePath "locks"
    not.null <$> getDirContentsRec lockdir

setLockPath :: UIMonad uiM => FilePath -> MainStateT uiM ()
setLockPath path = do
    lock <- liftIO $ fullLockPath path >>= readLock
    modify $ \ms -> ms {curLockPath = path, curLock = lock}

declare undecl@(Undeclared soln ls al) = do
    ourName <- mgetOurName
    ourUInfo <- mgetUInfo ourName
    [pbdg,ebdg,hbdg] <- mapM (lift.lift . getUIBinding IMMeta)
        [ CmdPlaceLock Nothing, CmdEdit, CmdHome ]
    haveLock <- isJust <$> gets curLock
    idx <- askLockIndex "Secure behind which lock?"
        (if haveLock
            then "First you must place ('"++pbdg++"') a lock to secure your solution behind, while at home ('"++hbdg++"')."
            else "First design a lock in the editor ('"++ebdg++"'), behind which to secure your solution.")
        (\i -> isJust $ userLocks ourUInfo ! i)
    guard $ isJust $ userLocks ourUInfo ! idx
    lift $ curServerActionAsyncThenInvalidate
        (DeclareSolution soln ls al idx)
        -- rather than recurse through the tree to find what scores may have
        -- changed as a result of this declaration, or leave it to timeouts
        -- and explicit refreshes to reveal it, we just invalidate all UInfos.
        (Just AllCodenames)

startMark = '^'

marksSet :: UIMonad uiM => MainStateT uiM [Char]
marksSet = do
    mst <- get
    return $ case ms2im mst of
        IMEdit -> Map.keys $ esMarks mst
        IMPlay -> Map.keys $ psMarks mst
        IMReplay -> Map.keys $ rsMarks mst
        _ -> []

jumpMark :: UIMonad uiM => Char -> MainStateT uiM ()
jumpMark ch = do
    mst <- get
    void.runMaybeT $ case ms2im mst of
        IMEdit -> do
            st <- liftMaybe $ ch `Map.lookup` esMarks mst
            lift $ setMark True '\'' >> pushEState st
        IMPlay -> do
            mst' <- liftMaybe $ ch `Map.lookup` psMarks mst
            put mst' { psMarks = Map.insert '\'' mst $ psMarks mst }
        IMReplay -> do
            mst' <- liftMaybe $ ch `Map.lookup` rsMarks mst
            put mst' { rsMarks = Map.insert '\'' mst $ rsMarks mst }
        _ -> return ()

setMark :: (Monad m) => Bool -> Char -> MainStateT m ()
setMark overwrite ch = get >>= \mst -> case mst of
    -- ugh... remind me why I'm not using lens?
    EditState { esMarks = marks, esGameStateStack = (st:_) } ->
        put $ mst { esMarks = insertMark ch st marks }
    PlayState {} -> put $ mst { psMarks = insertMark ch mst $ psMarks mst }
    ReplayState {} -> put $ mst { rsMarks = insertMark ch mst $ rsMarks mst }
    _ -> return ()
    where insertMark = Map.insertWith $ \new old -> if overwrite then new else old

askLockIndex :: UIMonad uiM => [Char] -> String -> (Int -> Bool) -> MaybeT (MainStateT uiM) Int
askLockIndex prompt failMessage pred = do
    let ok = filter pred [0,1,2]
    case length ok of
        0 -> (lift.lift) (drawError failMessage) >> mzero
        1 -> return $ head ok
        _ -> ask ok
    where
        ask ok = do
            let prompt' = prompt ++ " [" ++ intersperse ',' (map lockIndexChar ok) ++ "]"
            idx <- MaybeT $ lift $ join . (((charLockIndex<$>).listToMaybe)<$>) <$>
                textInput prompt' 1 False True Nothing Nothing
            if idx `elem` ok then return idx else ask ok
confirmOrBail :: UIMonad uiM => String -> MaybeT (MainStateT uiM) ()
confirmOrBail prompt = (guard =<<) $ lift.lift $ confirm prompt
confirm :: UIMonad uiM => String -> uiM Bool
confirm prompt = do
    drawPrompt False $ prompt ++ " [y/N] "
    setYNButtons
    waitConfirm <* endPrompt
    where
        waitConfirm = do
            cmds <- getInput IMTextInput
            case msum $ map ansOfCmd cmds of
                Just answer -> return answer
                Nothing -> waitConfirm
        ansOfCmd (CmdInputChar 'y') = Just True
        ansOfCmd (CmdInputChar 'Y') = Just True
        ansOfCmd (CmdInputChar c) = if isPrint c then Just False else Nothing
        ansOfCmd CmdRedraw = Just False
        ansOfCmd CmdRefresh = Nothing
        ansOfCmd CmdUnselect = Nothing
        ansOfCmd _ = Just False

-- | TODO: draw cursor
textInput :: UIMonad uiM => String -> Int -> Bool -> Bool -> Maybe [String] -> Maybe String -> uiM (Maybe String)
textInput prompt maxlen hidden endOnMax mposss init = getText (fromMaybe "" init, Nothing) <* endPrompt
    where
        getText :: UIMonad uiM => (String, Maybe String) -> uiM (Maybe String)
        getText (s,mstem) = do
            drawPrompt (length s == maxlen) $ prompt ++ " " ++ if hidden then replicate (length s) '*' else s
            if endOnMax && isNothing mstem && maxlen <= length s
            then return $ Just $ take maxlen s
            else do
                cmds <- getInput IMTextInput
                case foldM applyCmd (s,mstem) cmds of
                    Left False -> return Nothing
                    Left True -> return $ Just s
                    Right (s',mstem') -> getText (s',mstem')
            where
                applyCmd (s,mstem) (CmdInputChar c) = case c of
                    '\ESC' -> Left False
                    '\a' -> Left False -- ^G
                    '\ETX' -> Left False -- ^C
                    '\n' -> Left True
                    '\r' -> Left True
                    '\NAK' -> Right ("",Nothing)  -- ^U
                    '\b' -> Right $ (take (length s - 1) s, Nothing)
                    '\DEL' -> Right $ (take (length s - 1) s, Nothing)
                    '\t' -> case mposss of
                        Nothing -> Right (s,mstem)
                        Just possibilities -> case mstem of
                            Nothing -> let
                                completions = filter (completes s) possibilities
                                pref = if null completions then s else
                                    let c = head completions
                                    in head [ c' | n <- reverse [0..length c],
                                        let c'=take n c, all (completes c') completions ]
                                in Right (pref,Just pref)
                            Just stem -> let
                                completions = filter (completes stem) possibilities
                                later = filter (>s) completions
                                s' | null completions = s
                                   | null later = head completions
                                   | otherwise = minimum later
                                in Right (s',mstem)
                    _ -> Right $ if isPrint c
                            then ((if length s >= maxlen then id else (++[c])) s, Nothing)
                            else (s,mstem)
                applyCmd x (CmdInputSelLock idx) =
                    setTextOrSubmit x $ [lockIndexChar idx]
                applyCmd x (CmdInputSelUndecl (Undeclared _ _ (ActiveLock name idx))) =
                    setTextOrSubmit x $ name++[':',lockIndexChar idx]
                applyCmd x (CmdInputCodename name) =
                    setTextOrSubmit x $ name
                applyCmd x CmdRefresh = Right x
                applyCmd x CmdUnselect = Right x
                applyCmd _ _ = Left False
        completes s s' = take (length s) s' == s
        setTextOrSubmit (s,_) t = if s == t then Left True else Right (t,Nothing)