[Not a mod but...] Create image from a map file

[Mat Fenric]

Hello

I have loaded the source code of VintageStoryAPI, VSEssentialsMod, VSCreativeMod and VSSurvivalMod to find how load a map and generate images for a web site (so, not for a mod).

I know that the map is a .db file in the VintagestoryData\Maps directory

It's possible to read it with the method OpenOrCreate of a MapBD object, get a MapPieceDB object with GetMapPiece method and read the Pixels int array.

But I don't know how to initiate a ILogger object for the MapDB constructor.

MapDB mapdb = new MapDB(logger);

And I don't know yet how I will be able to read the Pixels int array to tranform the int in pixel data and generate the image.

My actual attempt :

string errorMessage = null;
string mapdbfilepath = @"[...]\VintagestoryData\Maps\[...].db";

//? api.World.Logger - ILogger Logger
MapDB mapdb = new MapDB(logger);
mapdb.OpenOrCreate(mapdbfilepath, ref errorMessage, false, true, false);

Vec2i coord = new Vec2i(0, 0);
MapPieceDB piece = mapdb.GetMapPiece(coord);

if (piece?.Pixels != null)
{
    lblIntsMap.Text = string.Empty;

    foreach (int pixel in piece.Pixels)
        lblIntsMap.Text += pixel.ToString();
}

I'm not sure how the coordinates of the Vec2i cord object work...

Can you help me ?

[DArkHekRoMaNT]

20 minutes ago, Mat Fenric said:

I'm not sure how the coordinates of the Vec2i cord object work...

I think it takes a map for the chunk at these coordinates. Try 500_000 500_000 - this should give one of the chunks next to the spawn. The game uses absolute unsigned coordinates, which are translated into coordinates relative to the spawn for the player.

Or 500_000/api.WorldManager.ChunkSize

[Mat Fenric]

I forgot to indicate that I am in a website (ASP.NET, C#), so I do not have access (I suppose) to an "api" object.

Edited December 17, 2021 by Mat Fenric

[Mat Fenric]

7 minutes ago, DArkHekRoMaNT said:

I think it takes a map for the chunk at these coordinates. Try 500_000 500_000 - this should give one of the chunks next to the spawn. The game uses absolute unsigned coordinates, which are translated into coordinates relative to the spawn for the player.

Or 500_000/api.WorldManager.ChunkSize

Good tip, thank you.

[Mat Fenric]

@DArkHekRoMaNTIt 's not block coordinates but chunk coordinates, so the middle is 15 625 x 15 625 (for 1 024 000 blocks by side map and 32 by side chunk).

For everyone, I found a way to read the file.

Now I need to know how to transform data like this into pixel color:

Quote

-15517387, -14515600, -14337470, -14996173, -15238566, -15574202, -15120567, -14657446, -15712449, -14915227, -15247020, -14595008, -15318210, -15909570, -15581383, -15644605, -14270390, -14858429, -15453650, -15579068, -12941203, -13470627, -13470627, -15381435, -14588327, -14785187, -15579064, -15247539, -15048360, -15445172, -14786472, -15049640

 

[DArkHekRoMaNT]

34 minutes ago, Mat Fenric said:

 

Now I need to know how to transform data like this into pixel color:

Looks like common int color. Same as hex color, but decimal

Edited December 17, 2021 by DArkHekRoMaNT

[Mat Fenric]

3 hours ago, DArkHekRoMaNT said:

Looks like common int color. Same as hex color, but decimal

My actual generation versus the map in game :

[Mat Fenric]

Finally, I have found the solution (not the best I suppose, but it works).

Left my image, right VS map.

[Jairus Strunk]

Dude... can you, in very simple terms. tell me how you did this so I can export a map from my db file?

[Mat Fenric]

In very simple terms, I developed a computer program that analyzes the map data and converts it into an image.

[Jairus Strunk]

5 hours ago, Mat Fenric said:

In very simple terms, I developed a computer program that analyzes the map data and converts it into an image.

Any chance you can package and post that? Sounds lovely and I can't find anything else that does it

 

[Mat Fenric]

Unfortunately this program remained at the prototype stage and has not evolved for almost two years.

It probably doesn't work with current versions of VS.