Reading terrain from ADT files

[vetanix]

Long time reader, first time poster.

I am trying to create a basic terrain mesh from the ADT files. There are 16x16 map tiles in each ADT, which I think I read correctly, but I can't figure out the relative height between the tiles. The first vertex of each tile is at height 0 and the rest are relative to this vertex, which means that there must be a variable that shows the "real" height of the entire tile.

I tried to adjust the tiles according to the closest ones, but of course it doesn't quite work as you can see (the rows are way off):

[Flowerew]

ADT/v18 - WoW.Dev Wiki

There's no need to adjust heights, if you use the position from the mcnk chunk.

Reading heightmap: mcvtchunk_s.h - wowmapper - Project Hosting on Google Code
Merging tiles: adt_c.cpp - wowmapper - Project Hosting on Google Code (Adt_c::BuildTerrain, starting from line: 40)

edit:
#define TU 100.0f / (3.0f * 16.0f) // Tile Units

[eLaps]

which means that there must be a variable that shows the "real" height of the entire tile.

Yes, mcnk->position[2].

ps: as said by Flowerew u_u

[andy012345]

Heres some code I used a while back for making triangles with the adt: void LoadADTData(int mapid, in - Anonymous - t6ypi0XJ - Pastebin.com

[MaiN]

public static class Constants
{
    public const float TileSize = 533.33333333333333333333333333333333333333333333f;
    public const float ChunkSize = TileSize / 16.0f;
}

.. in my mapchunk handler ..

OuterPositions = new Vector3[9,9];
int heightCount = 0;

// Outer heights
const float seperator = Constants.ChunkSize / 8.0f;
for (int y = 0; y < 9; y++)
{
    for (int x = 0; x < 9; x++)
    {
        OuterPositions[x, y] = new Vector3(
            Information.Position.X - y * seperator,
            Information.Position.Y - x * seperator,
            Information.Position.Z + HeightChunk.Heights[heightCount++]);
    }

    heightCount += 8;
}

heightCount = 9;
// Inner heights
MiddlePositions = new Vector3[8,8];
for (int y = 0; y < 8; y++)
{
    for (int x = 0; x < 8; x++)
    {
        MiddlePositions[x, y] = new Vector3(
            Information.Position.X - seperator / 2 - y * seperator,
            Information.Position.Y - seperator / 2 - x * seperator,
            Information.Position.Z + HeightChunk.Heights[heightCount++]);
    }

    heightCount += 9;
}

Information is the read struct.

[eLaps]

public const float TileSize = 533.33333333333333333333333333333333333333333333f;

Even if it still wouldn't be enough, maybe you should consider doubles twocents

[MaiN]

Even if it still wouldn't be enough, maybe you should consider doubles twocents

It's not a problem using a float, I just ensure I use the max capacity of the float.

[Apoc]

Or you could be as precise as the compiler lets you and do

public const float TileSize = 533f + (1f/3f);

[Flowerew]

Or you could be as precise as the compiler lets you and do

public const float TileSize = 533f + (1f/3f);

no! this is madness!

[Xarg0]

Madness????
THIS IS REALFRACTION!!!!!

[asbest0s]

Or you could be as precise as the compiler lets you and do

public const float TileSize = 533f + (1f/3f);

or just 1600f/3f to make it look even cleaner

[danielrhodea]

Hi,

How would I use the wow classes mentioned in this thread to dump adt to raw vertex model (.obj or similar) data with textures correctly mapped?