- if <def[tileup]> == Closed && <def[tileleft]> == Closed && <def[tiledown]> == Closed && <def[tileright]> == Closed:
            - define tile NoneOpen
        - if <def[tileup]> == Open && <def[tileleft]> == Closed && <def[tiledown]> == Closed && <def[tileright]> == Closed:
            - define tile NorthOpen
        - if <def[tileup]> == Closed && <def[tileleft]> == Open && <def[tiledown]> == Closed && <def[tileright]> == Closed:
            - define tile WestOpen
        - if <def[tileup]> == Closed && <def[tileleft]> == Closed && <def[tiledown]> == Open && <def[tileright]> == Closed:
            - define tile SouthOpen
        - if <def[tileup]> == Closed && <def[tileleft]> == Closed && <def[tiledown]> == Closed && <def[tileright]> == Open:
            - define tile EastOpen
        - if <def[tileup]> == Open && <def[tileleft]> == Open && <def[tiledown]> == Closed && <def[tileright]> == Closed:
            - define tile NorthWestOpen
        - if <def[tileup]> == Open && <def[tileleft]> == Closed && <def[tiledown]> == Open && <def[tileright]> == Closed:
            - define tile NorthSouthOpen
        - if <def[tileup]> == Open && <def[tileleft]> == Closed && <def[tiledown]> == Closed && <def[tileright]> == Open:
            - define tile NorthEastOpen
        - if <def[tileup]> == Closed && <def[tileleft]> == Open && <def[tiledown]> == Open && <def[tileright]> == Closed:
            - define tile WestSouthOpen
        - if <def[tileup]> == Closed && <def[tileleft]> == Open && <def[tiledown]> == Closed && <def[tileright]> == Open:
            - define tile WestEastOpen
        - if <def[tileup]> == Closed && <def[tileleft]> == Closed && <def[tiledown]> == Open && <def[tileright]> == Open:
            - define tile SouthEastOpen
        - if <def[tileup]> == Open && <def[tileleft]> == Open && <def[tiledown]> == Open && <def[tileright]> == Closed:
            - define tile NorthWestSouthOpen
        - if <def[tileup]> == Open && <def[tileleft]> == Open && <def[tiledown]> == Closed && <def[tileright]> == Open:
            - define tile NorthWestEastOpen
        - if <def[tileup]> == Open && <def[tileleft]> == Closed && <def[tiledown]> == Open && <def[tileright]> == Open:
            - define tile NorthSouthEastOpen
        - if <def[tileup]> == Closed && <def[tileleft]> == Open && <def[tiledown]> == Open && <def[tileright]> == Open:
            - define tile WestSouthEastOpen
        - if <def[tileup]> == Open && <def[tileleft]> == Open && <def[tiledown]> == Open && <def[tileright]> == Open:
            - define tile AllOpen