Editing SetLineBlocking

{{ACSFunction|description=Changes one or more lines' blocking properties by one of the given presets.
|usage=''void'' '''SetLineBlocking'''(''int'' ''tag'', ''int'' ''block'')
|parameters=
*''tag'': tag of linedefs to affect. If 0, change the activating line.
*''block'': one of the following options:
:*'''BLOCK_NOTHING''' or 0: remove all involved blocking flags (see below);
:*'''BLOCK_CREATURES''' or 1: sets the classic '''blocking''' ("impassable") flag, which blocks actors other than projectiles or bouncers. Removes the '''blockeverything''' and '''blockplayers''' flags.
:*'''BLOCK_EVERYTHING''' or 2: sets the '''blockeverything''' flag (effectively making it act like a solid wall). It also sets the '''blocking''' classic flag, but removes the '''blockplayers''' flag.
:*'''BLOCK_PLAYERS''' or 4: sets the [[MBF21]] '''blockplayers''' flag. Disables the '''blocking''' and '''blockeverything''' flags.
|notes=Not all blocking flags (such as '''blocklandmonsters''') are covered by this function.
|id=ACS internal}}