removed findPlacement repetition

cw/src/Challenges.hs

@@ -66,21 +66,19 @@ findLocation css (x,y) s@(l:ls) | x > limit && y > limit                     = N
 
 {--| checks for hidden word in possible directions    |--}
 findPlacement :: WordSearchGrid -> Posn -> String -> Maybe Placement
-findPlacement css (x,y) s | checkWordDir css (x,y) Forward s           = Just ((x,y),Forward)
-                          | checkWordDir css (x,y) Back s              = Just ((x,y),Back)
-                          | checkWordDir css (x,y) Up s                = Just ((x,y),Up)
-                          | checkWordDir css (x,y) Down s              = Just ((x,y),Down)
-                          | checkWordDir css (x,y) UpForward s         = Just ((x,y),UpForward)
-                          | checkWordDir css (x,y) UpBack s            = Just ((x,y),UpBack)
-                          | checkWordDir css (x,y) DownForward s       = Just ((x,y),DownForward)
-                          | checkWordDir css (x,y) DownBack s          = Just ((x,y),DownBack)
-                          | otherwise                                  = Nothing
-
-
-checkWordDir :: WordSearchGrid -> Posn -> Orientation -> String -> Bool
-checkWordDir css (x,y) dir (l:[]) | nextElem css (x,y) dir == Just l   = True
+findPlacement css (x,y) s = findP dirs
+    where
+      findP []                                  = Nothing
+      findP (d:ds) | checkWordDir css (x,y) s d = Just ( (x,y),d )
+                   | otherwise                  = findP ds
+
+      dirs = [Forward,Back,Up,Down,UpForward,UpBack,DownForward,DownBack]
+
+
+checkWordDir :: WordSearchGrid -> Posn -> String -> Orientation -> Bool
+checkWordDir css (x,y) (l:[]) dir | nextElem css (x,y) dir == Just l   = True
                                   | otherwise                          = False
-checkWordDir css (x,y) dir (l:ls) | nextElem css (x,y) dir == Just l   = checkWordDir css (nextPos dir (x,y)) dir ls
+checkWordDir css (x,y) (l:ls) dir | nextElem css (x,y) dir == Just l   = checkWordDir css (nextPos dir (x,y)) ls dir
                                   | otherwise                          = False