pub struct Linedef {
    pub start_vertex: i16,
    pub end_vertex: i16,
    pub flags: i16,
    pub special_type: i16,
    pub sector_tag: i16,
    pub front_sidedef: i16,
    pub back_sidedef: i16,
}

impl Linedef {
    pub fn blocks_players(&self) -> bool {
        self.flags & (1 << 0) != 0
    }

    pub fn blocks_monsters(&self) -> bool {
        self.flags & (1 << 1) != 0
    }

    pub fn is_two_sided(&self) -> bool {
        self.flags & (1 << 2) != 0
    }

    pub fn is_upper_unpegged(&self) -> bool {
        self.flags & (1 << 3) != 0
    }

    pub fn is_lower_unpegged(&self) -> bool {
        self.flags & (1 << 4) != 0
    }

    pub fn is_secret(&self) -> bool {
        self.flags & (1 << 5) != 0
    }

    pub fn blocks_sound(&self) -> bool {
        self.flags & (1 << 6) != 0
    }

    pub fn never_automap(&self) -> bool {
        self.flags & (1 << 7) != 0
    }

    pub fn always_automap(&self) -> bool {
        self.flags & (1 << 8) != 0
    }
}