3 import StdList, StdInt, StdBool, StdChar, StdMisc, StdClass, StdString, StdFile, StdArray, StdTuple, Data.Maybe, Data.Map, Control.Monad, Data.Tuple, Data.Void
6 inpath :== "screen.2001"
7 outpath :== "solver.smv"
10 puzzle :: SokobanPuzzle
11 puzzle = Sokoban [[Wall, Wall, Wall, Wall, Wall, Wall],
12 [Wall, Free, Free, Free, Free, Wall],
13 [Wall, Agent,Free, Box, Free, Wall],
14 [Wall, Free, Free, Free, Target, Wall],
15 [Wall, Wall, Wall, Wall, Wall, Wall]]
18 instance == SokobanTile
23 (==) Agent Agent = True
24 (==) Target Target = True
25 (==) TargetBox TargetBox = True
26 (==) TargetAgent TargetAgent = True
29 checkX :: [[SokobanTile]] Int -> Int
30 checkX p x = if (x > (length p - 1)) (-1) x
32 checkY :: [[SokobanTile]] Int Int -> Int
34 | ((x < 0) || (x > (length p - 1))) = -1
35 | otherwise = if (y > (length (p !! x) - 1)) (-1) y
37 genField :: [[SokobanTile]] Int Int -> String
38 genField p x y = " init(x" +++ toString x +++ "_" +++ toString y +++ ") := " +++ fromTile ((p !! x) !! y) +++ ";\n"
40 genVars :: Int Int -> String
41 genVars x y = " x" +++ toString x +++ "_" +++ toString y +++ " : {Wall, Free, Box, BoxOnTarget, Target, Agent, AgentOnTarget};\n"
43 genCoord :: [[SokobanTile]] Int Int -> [String]
44 genCoord p x y = [" next(x" +++ toString x +++ "_" +++ toString y +++ ") := case\n",
45 " x" +++ toString x +++ "_" +++ toString y +++ " = Wall: Wall;\n",
46 " x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Agent & move = Left: Agent;\n",
47 " x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Agent & move = Up: Agent;\n",
48 " x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Agent & move = Right : Agent;\n",
49 " x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Agent & move = Down : Agent;\n",
50 " x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Box & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+2)) +++ " = Agent & move = Left: Box;\n",
51 " x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Box & x" +++ toString (checkX p (x+2)) +++ "_" +++ toString (checkY p (x+2) y) +++ " = Agent & move = Up: Box;\n",
52 " x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Box & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-2)) +++ " = Agent & move = Right : Box;\n",
53 " x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Box & x" +++ toString (checkX p (x-2)) +++ "_" +++ toString (checkY p (x-2) y) +++ " = Agent & move = Down : Box;\n",
54 " x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Free | x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Target) & move = Right: Free;\n",
55 " x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Free | x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p x y) +++ " = Target) & move = Down: Free;\n",
56 " x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Free | x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Target) & move = Left : Free;\n",
57 " x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ "= Free | x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Target) & move = Up : Free;\n",
59 " x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Box & x"
60 +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+2)) +++ " = Free | x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+2)) +++ " = Target) & move = Right: Free;\n",
61 " x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p x y) +++ " = Box & x"
62 +++ toString (checkX p (x+2)) +++ "_" +++ toString (checkY p (x+2) y) +++ " = Free | x" +++ toString (checkX p (x+2)) +++ "_" +++ toString (checkY p (x+2) y) +++ " = Target) & move = Down: Free;\n",
63 " x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Box & x"
64 +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-2)) +++ " = Free | x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-2)) +++ " = Target) & move = Left: Free;\n",
65 " x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Box & x"
66 +++ toString (checkX p (x-2)) +++ "_" +++ toString (checkY p (x-2) y) +++ " = Free | x" +++ toString (checkX p (x-2)) +++ "_" +++ toString (checkY p (x-2) y) +++ " = Target) & move = Up: Free;\n",
68 " x" +++ toString x +++ "_" +++ toString y +++ " = Box & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Agent & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Free | x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Target) & move = Left: Agent;\n",
69 " x" +++ toString x +++ "_" +++ toString y +++ " = Box & x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Agent & (x" +++ toString (x-1) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Free | x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Target) & move = Up: Agent;\n",
70 " x" +++ toString x +++ "_" +++ toString y +++ " = Box & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Agent & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Free | x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Target) & move = Right : Agent;\n",
71 " x" +++ toString x +++ "_" +++ toString y +++ " = Box & x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Agent & (x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Free | x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p x y) +++ " = Target) & move = Down : Agent;\n",
72 " x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Agent & move = Left: AgentOnTarget;\n",
73 " x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Agent & move = Up: AgentOnTarget;\n",
74 " x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Agent & move = Right : AgentOnTarget;\n",
75 " x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Agent & move = Down : AgentOnTarget;\n",
76 " x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Box & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+2)) +++ " = Agent & move = Left: BoxOnTarget;\n",
77 " x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Box & x" +++ toString (checkX p (x+2)) +++ "_" +++ toString (checkY p (x+2) y) +++ " = Agent & move = Up: BoxOnTarget;\n",
78 " x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Box & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-2)) +++ " = Agent & move = Right : BoxOnTarget;\n",
79 " x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Box & x" +++ toString (checkX p (x-2)) +++ "_" +++ toString (checkY p (x-2) y) +++ " = Agent & move = Down : BoxOnTarget;\n",
80 " x" +++ toString x +++ "_" +++ toString y +++ " = AgentOnTarget & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Free | x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Target) & move = Right: Target;\n",
81 " x" +++ toString x +++ "_" +++ toString y +++ " = AgentOnTarget & (x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Free | x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Target) & move = Down: Target;\n",
82 " x" +++ toString x +++ "_" +++ toString y +++ " = AgentOnTarget & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Free | x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Target) & move = Left : Target;\n",
83 " x" +++ toString x +++ "_" +++ toString y +++ " = AgentOnTarget & (x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Free | x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Target) & move = Up : Target;\n",
84 " x" +++ toString x +++ "_" +++ toString y +++ " = BoxOnTarget & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Agent & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Free | x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Target) & move = Left: AgentOnTarget;\n",
85 " x" +++ toString x +++ "_" +++ toString y +++ " = BoxOnTarget & x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Agent & (x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Free | x" +++ toString (checkX p (x-1)) +++ "_"
86 +++ toString (checkY p (x-1) y) +++ " = Target) & move = Up: AgentOnTarget;\n",
87 " x" +++ toString x +++ "_" +++ toString y +++ " = BoxOnTarget & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Agent & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Free | x" +++ toString x +++ "_" +++ toString (checkY p x (y+1)) +++ " = Target) & move = Right : AgentOnTarget;\n",
88 " x" +++ toString x +++ "_" +++ toString y +++ " = BoxOnTarget & x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Agent & (x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Free | x" +++ toString (checkX p (x+1)) +++ "_"
89 +++ toString (checkY p (x+1) y) +++ " = Target) & move = Down : AgentOnTarget;\n",
90 " TRUE : x" +++ toString x +++ "_" +++ toString y +++ ";\n",
94 fromTile :: SokobanTile -> String
95 fromTile Wall = "Wall"
96 fromTile Free = "Free"
98 fromTile Target = "Target"
99 fromTile Agent = "Agent"
100 fromTile TargetAgent = "AgentOnTarget"
101 fromTile TargetBox = "BoxOnTarget"
103 genCond :: [[SokobanTile]] Int Int -> String
105 | x < 0 || y < 0 || x > (length p) - 1 = ""
107 | y > (length (p !! x) - 1) = ""
108 | otherwise = if ((p !! x) !! y == Target) ("x" +++ toString x +++ "_" +++ toString y +++ " = BoxOnTarget") ""
110 addLogic :: [String] -> [String]
113 addLogic [x:xs] = [x +++ " & ": addLogic xs]
115 genAll :: SokobanPuzzle -> [String]
116 genAll puzzle = let (Sokoban p) = puzzle in
121 ++ [genVars x y \\ x <- [0..(length p - 1)], y <- [0..(length (p !! x) - 1)]]
122 ++ [" move : {Up, Down, Left, Right};\n"]
125 " init(move) := {Up, Down, Left, Right};\n"
127 ++ [genField p x y \\ x <- [0..(length p - 1)], y <- [0..(length (p !! x) - 1)]]
128 ++ flatten [filter (\x -> not (contains '-' x)) (genCoord p x y) \\ x <- [0..(length p - 1)], y <- [0..(length (p !! x) - 1)]]
129 ++ [" next(move) := {Up, Down, Left, Right};\n"]
131 ++ addLogic (filter (\x -> x <> "" ) [genCond p x y \\ x <- [0..(length p - 1)], y <- [0..(length (p !! x) - 1)]])
134 contains :: Char String -> Bool
135 contains char str = not (isEmpty [c\\c<-:str | char == c])
137 readLines :: File -> [String]
140 # (line, file) = sfreadline file
141 | otherwise = [line: readLines file]
143 writeLines :: [String] *File -> *File
144 writeLines [] file = file
145 writeLines [l:ls] file = writeLines ls (file <<< l)
147 openInpFile :: *World String -> (File, *World)
148 openInpFile world path
149 # (ok, file, world) = sfopen path 0 world
150 | not ok = abort "Error reading the file."
153 openOutFile :: *World String -> (*File, *World)
154 openOutFile world path
155 # (ok, file, world) = fopen path 1 world
156 | not ok = abort "Can not write to a file."
159 closeFile :: *World *File -> (Bool, *World)
161 # world = fclose file world
164 Start :: *World -> *World
166 # (p, w) = parse inpath w
168 # (f, w) = openOutFile w outpath
170 # (ok, w) = closeFile w f