struct coord {
    s16 X;
    s16 Y;
    s16 Z;
    s16 d;
};

struct collisionObj {
    u16 vertId1;
    u16 vertId2;
    u16 colId;
    u8 collisHeigth;
    u8 collisFlag;
};

struct cylCollObj {
    u16 coordsVertex;
    u16 radius;
    u16 objectId;
    u8 collisHeigth;
    u8 collisFlag;
};

struct block {
    u32 blockSize;
    u32 blockOffset;
};

struct header {
    block vertexMap;
    block collisionLines;
    block cylinders;
    block hz2;//and so on...
    
    coord coords[vertexMap.blockSize]
        @ vertexMap.blockOffset;
    collisionObj coll[collisionLines.blockSize]
        @ collisionLines.blockOffset;
    cylCollObj cyl[cylinders.blockSize]
        @ cylinders.blockOffset;
};  

header colls @ 0x00;