Read .aimesh_ngrid files from League of Legends

aimesh_ngrid.bt

//--------------------------------------
//--- 010 Editor v5.0.2 Binary Template
//
// File: .aimesh_ngrid Template
// Author: Pupix <manolea.robert@gmail.com>
// Revision: 1.0
// Purpose: Read .aimesh_ngrid files from League of Legends
//--------------------------------------

//--------------------------------------
// STRUCTS                                 
//--------------------------------------

struct POSITION {
    float X;
    float Y;
    float Z;
};

struct HEADER {
    byte MajorVersion;
    short MinorVersion;

    if (MajorVersion > 0) {

        POSITION MinGridPos;
        POSITION MaxGridPos;
        float CellSize;
        uint XCellCount;
        uint YCellCount;

    } else {

        // In this version CellCount are actually
        // the last 2 shorts before file end padding
        // AFAIK only very old SR has it
        local uint XCellCount = 294;
        local uint YCellCount = 295;
    }
};

struct CELL3 {
    float height;
    uint32 Unk1;
    float Arrival;
    byte Open;
    float Heuristic;
    uint32 Actors;
    short X;
    short Z;
    float Unk2;
    float Unk3;
    uint32 Unk4;
    uint32 SessionIDRelated;
    float Ref;
    short ArrivalDirection;
    short Flags;
    short RefNodes[2];
    byte unk5[3];
};

struct CELL5 {
    float Height;
    uint32 Unk1;
    float Arrival;
    byte Open;
    float Heuristic;
    uint32 Actors;
    short X;
    short Z;
    float Unk2;
    float Unk3;
    uint32 Unk4;
    uint32 SessionIDRelated;
    float Ref;
    short ArrivalDirection;
    short Flags;
    short RefNodes[2];
    byte unk5[3];
};

struct CELL7 {
    float Height;
    ushort Unk1;
    float MinHeight;
    ushort Unk2;
    float Heuristic;
    uint32 Actors;
    short X;
    short Z;
    float Unk3;
    float Unk4;
    uint32 SessionIDRelated;
    float Ref;
    short ArrivalDirection;
    short Flags;
    short RefNodes[2];
};

struct FLOAT_MAP {
    uint XCount;
    uint YCount;
    float Unk1;
    float Unk2;
    
    float Unk3[XCount * YCount];
    float Unk4[810899];
    
    short Unk5;
    short Unk6;
};

//--------------------------------------
// PARSING                                 
//--------------------------------------

HEADER header;

local int CellCounter = header.XCellCount * header.YCellCount;

switch (header.MajorVersion) {
    case 3:
        CELL3 NavigationGrid[CellCounter];
        break;
    case 5:
        CELL5 NavigationGrid[CellCounter];
        ushort Unk1[CellCounter];
        byte Unk2[528];
        break;
    case 7:
        CELL7 NavigationGrid[CellCounter];
        ushort Unk1[CellCounter];
        ushort Unk2[CellCounter];
        ushort Unk3[CellCounter];
        byte Unk4[1056];
        break;
    default:

};

// More unknowns
FLOAT_MAP unk;


/*
FLAGS
CELL_IS_BRUSH = 0x1,
CELL_WALL = 0x2,
CELL_ALWAYS_VISIBLE = 0x100,
*/