code/SokobanCoord.icl

   1 module SokobanCoord
   2
   3 import StdList, StdInt, StdBool, StdChar, StdMisc, StdClass, StdString, StdFile, StdArray, StdTuple, Data.Maybe, Data.Map, Control.Monad, Data.Tuple, Data.Void
   4 import Sokoban
   5
   6 inpath  :== "screen.2001"
   7 outpath :== "solver.smv"
   8
   9 checkX :: [[SokobanTile]] Int -> Int
  10 checkX p x = if (x > (length p - 1)) (-1) x
  11
  12 checkY :: [[SokobanTile]] Int Int -> Int
  13 checkY p x y
  14   | ((x < 0) || (x > (length p - 1))) = -1
  15   | otherwise = if (y > (length (p !! x) - 1)) (-1) y
  16
  17 genField :: [[SokobanTile]] Int Int -> String
  18 genField p x y = "    init(x" +++ toString x +++ "_" +++ toString y +++ ") := " +++ fromTile ((p !! x) !! y) +++ ";\n"
  19
  20 genVars :: Int Int -> String
  21 genVars x y = "    x" +++ toString x +++ "_" +++ toString y +++ " : {Wall, Free, Box, BoxOnTarget, Target, Agent, AgentOnTarget};\n"
  22
  23 genCoord :: [[SokobanTile]] Int Int -> [String]
  24 genCoord p x y = ["  next(x" +++ toString x +++ "_" +++ toString y +++ ") := case\n",
  25                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Wall: Wall;\n",
  26                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x  (y+1)) +++ " = Agent & move = Left: Agent;\n",
  27                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Agent & move = Up: Agent;\n",
  28                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Agent & move = Right : Agent;\n",
  29                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Free & x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Agent & move = Down : Agent;\n",
  30                 "    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",
  31                 "    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",
  32                 "    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",
  33                 "    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",
  34                 "    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",
  35                 "    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",
  36                 "    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",
  37                 "    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",
  38
  39                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y+1)) +++ " = Box & x"
  40                         +++ 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",
  41                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p x y) +++ " = Box & x"
  42                         +++ 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",
  43                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Box & x"
  44                         +++ 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",
  45                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Agent & (x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Box & x"
  46                         +++ 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",
  47
  48                 "    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",
  49                 "    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",
  50                 "    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",
  51                 "    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",
  52                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x  (y+1)) +++ " = Agent & move = Left: AgentOnTarget;\n",
  53                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p (x+1)) +++ "_" +++ toString (checkY p (x+1) y) +++ " = Agent & move = Up: AgentOnTarget;\n",
  54                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p x) +++ "_" +++ toString (checkY p x (y-1)) +++ " = Agent & move = Right : AgentOnTarget;\n",
  55                 "    x" +++ toString x +++ "_" +++ toString y +++ " = Target & x" +++ toString (checkX p (x-1)) +++ "_" +++ toString (checkY p (x-1) y) +++ " = Agent & move = Down : AgentOnTarget;\n",
  56                 "    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",
  57                 "    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",
  58                 "    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",
  59                 "    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",
  60                 "    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",
  61                 "    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",
  62                 "    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",
  63                 "    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",
  64                 "    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",
  65                 "    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)) +++ "_"
  66                         +++ toString (checkY p (x-1) y) +++ " = Target) & move = Up: AgentOnTarget;\n",
  67                 "    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",
  68                 "    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)) +++ "_"
  69                         +++ toString (checkY p (x+1) y) +++ " = Target) & move = Down : AgentOnTarget;\n",
  70                 "    TRUE : x" +++ toString x +++ "_" +++ toString y +++ ";\n",
  71                 "  esac;\n"
  72                 ]
  73
  74 instance == SokobanTile
  75 where
  76   (==) Wall Wall = True
  77   (==) Free Free = True
  78   (==) Box Box = True
  79   (==) Agent Agent = True
  80   (==) Target Target = True
  81   (==) TargetBox TargetBox = True
  82   (==) TargetAgent TargetAgent = True
  83   (==) _ _ = False
  84
  85 fromTile :: SokobanTile -> String
  86 fromTile Wall = "Wall"
  87 fromTile Free = "Free"
  88 fromTile Box = "Box"
  89 fromTile Target = "Target"
  90 fromTile Agent = "Agent"
  91 fromTile TargetAgent = "AgentOnTarget"
  92 fromTile TargetBox = "BoxOnTarget"
  93
  94 genCond :: [[SokobanTile]] Int Int -> String
  95 genCond p x y
  96   | x < 0 || y < 0 || x > (length p) - 1 = ""
  97   | otherwise
  98     | y > (length (p !! x) - 1) = ""
  99     | otherwise = if ((p !! x) !! y == Target) ("x" +++ toString x +++ "_" +++ toString y +++ " = BoxOnTarget") ""
 100
 101 addLogic :: [String] -> [String]
 102 addLogic [] = []
 103 addLogic [x] = [x]
 104 addLogic [x:xs] = [x +++ " & ": addLogic xs]
 105
 106 genAll :: SokobanPuzzle -> [String]
 107 genAll puzzle = let (Sokoban p) = puzzle in
 108          [
 109           "MODULE main\n",
 110           "VAR\n"
 111           ]
 112       ++ [genVars x y \\ x <- [0..(length p - 1)], y <- [0..(length (p !! x) - 1)]]
 113       ++ ["    move : {Up, Down, Left, Right};\n"]
 114       ++ [
 115           "  ASSIGN\n",
 116           "    init(move) := {Up, Down, Left, Right};\n"
 117          ]
 118       ++ [genField p x y \\ x <- [0..(length p - 1)], y <- [0..(length (p !! x) - 1)]]
 119       ++ flatten [filter (\x -> not (contains '-' x)) (genCoord p x y) \\ x <- [0..(length p - 1)], y <- [0..(length (p !! x) - 1)]]
 120       ++ ["  next(move) := {Up, Down, Left, Right};\n"]
 121       ++ ["INVARSPEC !("]
 122       ++ addLogic (filter (\x -> x <> "" ) [genCond p x y \\ x <- [0..(length p - 1)], y <- [0..(length (p !! x) - 1)]])
 123       ++ [")\n"]
 124
 125 contains :: Char String -> Bool
 126 contains char str = not (isEmpty [c\\c<-:str | char == c])
 127
 128 readLines :: File -> [String]
 129 readLines file
 130   | sfend file = []
 131   # (line, file) = sfreadline file
 132   | otherwise = [line: readLines file]
 133
 134 writeLines :: [String] *File -> *File
 135 writeLines [] file = file
 136 writeLines [l:ls] file = writeLines ls (file <<< l)
 137
 138 openInpFile :: *World String -> (File, *World)
 139 openInpFile world path
 140   # (ok, file, world) = sfopen path 0 world
 141   | not ok = abort "Error reading the file."
 142   = (file, world)
 143
 144 openOutFile :: *World String -> (*File, *World)
 145 openOutFile world path
 146   # (ok, file, world) = fopen path 1 world
 147   | not ok = abort "Can not write to a file."
 148   = (file, world)
 149
 150 closeFile :: *World *File -> (Bool, *World)
 151 closeFile world file
 152   # world = fclose file world
 153   = world
 154
 155 Start :: *World -> *World
 156 Start w
 157   # (p, w) = parse inpath w
 158   # s = genAll p
 159   # (f, w) = openOutFile w outpath
 160   # f = writeLines s f
 161   # (ok, w) = closeFile w f
 162   = w