boolean shifted_relocation; /* no level centering when relocating player */
boolean can_pass_to_walkable; /* player can pass to empty or walkable tile */
boolean grow_into_diggable; /* amoeba can grow into anything diggable */
+ boolean auto_exit_sokoban; /* automatically finish solved Sokoban levels */
boolean continuous_snapping; /* repeated snapping without releasing key */
boolean block_snap_field; /* snapping blocks field to show animation */