MapGridIsImpassableAt -> MapGridGetCollisionAt, and add fixes

src/fldeff_cut.c

@@ -191,7 +191,12 @@ bool8 SetUpFieldMove_Cut(void)
                         sHyperCutTiles[6 + (i * 5) + j] = TRUE;
                         ret = TRUE;
                     }
-                    if (MapGridIsImpassableAt(x, y) == TRUE)
+                #ifdef BUGFIX
+                    // Collision has a range 0-3, any value != 0 is impassable
+                    if (MapGridGetCollisionAt(x, y))
+                #else
+                    if (MapGridGetCollisionAt(x, y) == 1)
+                #endif
                     {
                         cutTiles[i * 3 + j] = FALSE;
                     }