X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=code%2FSokobanObjectwise.icl;h=15fb732e63b2f230d023c634a381dacff171a7c3;hb=a7a9fa5ded371c89459ba6872290774488ec7c3d;hp=f234ae1ed96fffc984a8fd89ee74b8ebbfe5806d;hpb=81190f3341c4f7f12529ffa32f5f6a3ca984da77;p=mc1516pa.git

diff --git a/code/SokobanObjectwise.icl b/code/SokobanObjectwise.icl
index f234ae1..15fb732 100644
--- a/code/SokobanObjectwise.icl
+++ b/code/SokobanObjectwise.icl
@@ -1,5 +1,159 @@
 module SokobanObjectwise
 
+import StdString
+import StdFile
+import StdTuple
+import StdFunc
+import StdOrdList
+import StdList
+
+from Data.Func import $
+from Data.List import intercalate, maximum, permutations
+from Text import class Text(concat,join), instance Text String
+
 import Sokoban
 
-Start = "hi"
+:: AnnotatedSokoban :== [(Int, Int, SokobanTile)]
+
+Start :: *World -> *World
+Start w
+# (io, w) = stdio w
+# (puzzle, io) = parseFromFile io
+# io = io <<< encode puzzle <<< "\n"
+= snd (fclose io w)
+
+encode :: SokobanPuzzle -> String
+encode p = join "\n" [
+	"MODULE main",
+	"VAR",
+	encodeObVar "agent" maxX maxY,
+	join "\n" [encodeObVar ("b" <+ i) maxX maxY\\i<-boxnums],
+	"\tmovement: {left, up, right, down, finished};",
+	"--Handy variable for deltas",
+	deltaDefine,
+	"--Initial values",
+	"INIT",
+	encodeObInit "agent" agent <+ " &",
+	join " &\n" [encodeObInit ("b" <+ i) p\\p<-boxes & i<-[0..]],
+	"--Agent not on the box",
+	"INVAR " <+ encodeAgentNotOnBox boxnums <+ ";",
+	"--Allowed box positions on the field",
+	join "\n" ["INVAR "<+encodeObPosition ("b"<+b) legalPos<+";"\\b<-boxnums],
+	"--Box not on box",
+	encodeBoxOnBoxes (indexList boxes),
+	"--Allowed agent positions",
+	"INVAR " <+ encodeObPosition "agent" legalPos,
+	"--Goal state",
+	"INVAR " <+ encodeGoalState boxnums targetPos <+ ";",
+	"",
+	encodeObMovement "agent",
+	encodeBoxMovement boxnums,
+	"CTLSPEC ! EF (movement = finished);",
+
+	""]
+	where
+		targetPos = getTargets annot
+		boxes = getBoxes annot
+		boxnums = indexList boxes
+		agent = hd $ getAgents annot
+		legalPos = legalPositions annot
+		annot = annotate p
+		(maxX, maxY) = getMetrics annot
+
+deltaDefine :: String
+deltaDefine = join "\n" [
+	"DEFINE dx := case",
+	"\t\tmovement = left : -1;",
+	"\t\tmovement = right: +1;",
+	"\t\tTRUE:              0;",
+	"\tesac;",
+	"\tdy := case",
+	"\t\tmovement = up  : -1;",
+	"\t\tmovement = down: +1;",
+	"\t\tTRUE:             0;",
+	"\tesac;"]
+
+//THIS IS NAIVE AND SHOULD BE IMPROVED
+legalPositions :: AnnotatedSokoban -> [(Int, Int)]
+legalPositions p = [(x, y)\\(x, y, t)<-p | case t of Wall=False; _=True]
+
+annotate :: SokobanPuzzle -> AnnotatedSokoban
+annotate (Sokoban p) = flatten [[(x, y, t)\\t<-r & x<-[0..]]\\r<-p & y<-[0..]]
+
+getTargets :: AnnotatedSokoban -> [(Int, Int)]
+getTargets p = [(x, y)\\(x, y, t)<-p | 
+	case t of Target=True;TargetBox=True;TargetAgent=True;_=False] 
+
+getMetrics :: AnnotatedSokoban -> (Int, Int)
+getMetrics p = (maximum (map fst3 p),maximum (map snd3 p))
+
+getAgents :: AnnotatedSokoban -> [(Int, Int)]
+getAgents p = [(x, y)\\(x, y, Agent)<-p] ++ [(x, y)\\(x, y, TargetAgent)<-p]
+
+getBoxes :: AnnotatedSokoban -> [(Int, Int)]
+getBoxes p = [(x, y)\\(x, y, Box)<-p] ++ [(x, y)\\(x, y, TargetBox)<-p]
+
+(<+) infixr 5 :: a b -> String | toString a & toString b
+(<+) a b = toString a +++ toString b
+
+encodeGoalState :: [Int] [(Int, Int)] -> String
+encodeGoalState boxes targets = "(" <+
+	join " |\n\t" (map encodeOneGoal boxtargets) <+ ")<->movement=finished"
+	where
+		boxtargets = map (zip2 targets) (permutations boxes)
+		
+		encodeOneGoal :: [((Int, Int), Int)] -> String
+		encodeOneGoal p = "(" <+ join " & " (encodeOneGoal` p) <+ ")"
+
+		encodeOneGoal` :: [((Int, Int), Int)] -> [String]
+		encodeOneGoal` [] = []
+		encodeOneGoal` [((x, y), b):xs] = [
+			"b" <+ b <+ "x = " <+ x <+ " & " <+
+			"b" <+ b <+ "y = " <+ y:encodeOneGoal` xs]
+
+encodeBoxOnBoxes :: [Int] -> String
+encodeBoxOnBoxes [] = ""
+encodeBoxOnBoxes [b] = ""
+encodeBoxOnBoxes [b:bs] = "INVAR " <+ encodeBoxOnBox b bs <+ ";\n" <+
+	encodeBoxOnBoxes bs
+	where
+		encodeBoxOnBox :: Int [Int] -> String
+		encodeBoxOnBox x bs = join " & " ["!(b" <+ x <+ "x=b" <+ b <+ "x &" <+ 
+			"b" <+ x <+ "y=b" <+ b <+ "y)"\\b<-bs]
+
+encodeAgentNotOnBox :: [Int] -> String
+encodeAgentNotOnBox bs = join " &\n\t" [
+	"!(b" <+ i <+ "x = agentx & b" <+ i <+ "y = agenty)"\\i<-bs]
+
+encodeObMovement :: String -> String
+encodeObMovement s = "TRANS next(" <+ s <+ "x) = " <+ s <+ "x + dx;\n" <+
+	"TRANS next(" <+ s <+ "y) = " <+ s <+ "y + dy;"
+
+encodeObPosition :: String [(Int, Int)] -> String
+encodeObPosition b p = join " |\n\t" [forThisX b x p\\x<-removeDup $ map fst p]
+	where
+		forThisX :: String Int [(Int, Int)] -> String
+		forThisX s cx p = "(" <+ s <+ "x=" <+ cx <+ " & (" <+
+			join " | " [s <+ "y=" <+ y \\(x, y)<-p | x == cx] <+ "))"
+
+encodeObInit :: String (Int, Int) -> String
+encodeObInit s (x, y) = "\t" <+ s <+ "x=" <+ x <+ " & " <+ s <+ "y=" <+ y
+
+encodeObVar :: String Int Int -> String
+encodeObVar s mx my = "\t" <+ s <+ "x: 0.." <+ mx <+ ";\n" <+ 
+	"\t" <+ s <+ "y: 0.." <+ my <+ ";\n"
+
+encodeBoxMovement :: [Int] -> String
+encodeBoxMovement bs = join "\n" $ map ebm bs
+	where
+		ebm :: Int -> String
+		ebm i = "TRANS next(b" <+ i <+ "x) = case\n" <+
+			"\t\tnext(agentx) = b" <+ i <+ "x & " <+
+			"next(agenty) = b" <+ i <+ "y: b" <+ i <+ "x + dx;\n" <+
+			"\t\tTRUE: b" <+ i <+ "x;\n" <+
+			"\tesac;\n" <+
+			"TRANS next(b" <+ i <+ "y) = case\n" <+
+			"\t\tnext(agentx) = b" <+ i <+ "x & " <+
+			"next(agenty) = b" <+ i <+ "y: b" <+ i <+ "y + dy;\n" <+
+			"\t\tTRUE: b" <+ i <+ "y;\n" <+
+			"\tesac;"