diff --git a/src/Test.hs b/src/Test.hs
index 19c2358..06bc2b7 100644
--- a/src/Test.hs
+++ b/src/Test.hs
@@ -199,20 +199,29 @@ updateMap dt = do
       let npos@(V2 nr nc) = pos' + fmap (* (4 * dt)) vel'
           dpos@(V2 dpr dpc) = npos - pos'
           len = sqrt (dpos `dot` dpos)
-          lll = Prelude.map (\i ->
-                  let lrow =
-                        [ (nr - (fromIntegral $ floor nr))
-                        , (nr - (fromIntegral $ floor nr)) + (dpr / len)
-                        ..
-                        ]
-                      lcol =
-                        [ (nc - (fromIntegral $ floor nc))
-                        , (nc - (fromIntegral $ floor nc)) + (dpc / len)
-                        ..
-                        ]
-                  in  (fromIntegral (floor (lrow !! i)), fromIntegral (floor (lcol !! i)))
-                  )
-                  [ 0 .. floor len]
+          lll = (,)
+            <$> (
+              if dpr < 0
+              then [(floor dpr :: Int) .. 0]
+              else [0 .. (ceiling dpr :: Int)])
+            <*> (
+              if dpc < 0
+              then [(floor dpc :: Int) .. 0]
+              else [0 .. (ceiling dpc :: Int)])
+          -- lll = Prelude.map (\i ->
+          --         let lrow =
+          --               [ (nr - (fromIntegral $ floor nr))
+          --               , (nr - (fromIntegral $ floor nr)) + (dpr / len)
+          --               ..
+          --               ]
+          --             lcol =
+          --               [ (nc - (fromIntegral $ floor nc))
+          --               , (nc - (fromIntegral $ floor nc)) + (dpc / len)
+          --               ..
+          --               ]
+          --         in  (fromIntegral (floor (lrow !! i)), fromIntegral (floor (lcol !! i)))
+          --         )
+          --         [ 0 .. floor len]
           ent = defEntity'
             { pos = Set $ pos' + dpos * Prelude.foldl
               (\acc a -> let ret = checkBoundsCollision2 pos' npos dt acc a
@@ -222,19 +231,16 @@ updateMap dt = do
                 concatMap
                 (\(dr, dc) ->
                   let bs = fromMaybe [] (imgObstacle <$> (M.safeGet
-                        (floor (nr + dr))
-                        (floor (nc + dc))
+                        (fromIntegral $ floor nr + dr)
+                        (fromIntegral $ floor nc + dc)
                         (imgMat (stateData ud))))
                   in  Prelude.map (\(Boundaries (minr, minc) (maxr, maxc))->
                         Boundaries
-                          (minr + dr, minc + dc)
-                          (maxr + dr, maxc + dc)
+                          (minr + fromIntegral dr, minc + fromIntegral dc)
+                          (maxr + fromIntegral dr, maxc + fromIntegral dc)
                         ) bs
                   )
-                (A.log
-                  A.Verbose
-                  ("paassing relative tiles: " ++ show lll ++ " " ++ show len)
-                  lll)
+                lll
               )
             }
       return ent
@@ -367,10 +373,13 @@ checkBoundsCollision2
   -> V2 Double
 checkBoundsCollision2
   pre@(V2 pr pc) next@(V2 nr nc) dt acc (Boundaries (minr, minc) (maxr, maxc))
-    | colltr < 0 && colltc < 0  = V2 0 0
-    | colltr < 0 && colltc >= 0 = (V2 0 1) * acc
-    | colltc < 0 && colltr >= 0 = (V2 1 0) * acc
-    | otherwise                 = acc
+    -- | colltr < 0 && colltc < 0   = A.log A.Debug (show (colltr, colltc)) (V2 (colltr / dt) (colltc / dt))
+    | (colltr < 0 && colltc < 0) || (inrow && incol) = A.log A.Debug ("both " ++ show (colltr, colltc)) (V2 0 0)
+    -- | colltr < 0 && colltc >= dt = (V2 (colltr / dt) 1)
+    | colltr < 0 && incol = (A.log A.Debug ("row fixed " ++ show (colltr, colltc))(V2 0 1)) * acc
+    -- | colltc < 0 && colltc >= dt = (V2 1 (colltr / dt))
+    | colltc < 0 && inrow = (A.log A.Debug ("col fixed " ++ show (colltr, colltc))(V2 1 0)) * acc
+    | otherwise                = acc
     where
       vel@(V2 vr vc) = fmap (/ dt) (next - pre)
       colltr
@@ -381,3 +390,5 @@ checkBoundsCollision2
         | vc > 0 = (((fromIntegral (floor nc :: Int)) + minc - 0.15) - nc) / vc
         | vc < 0 = (((fromIntegral (floor nc :: Int)) + maxc + 0.15) - nc) / vc
         | otherwise = 0
+      inrow = pr > minr && pr < maxr
+      incol = pc > minc && pc < maxc