How to make a game that loads a prebuilt map with each created world?

[PolySaken]

Is there a reliable way to make a game where each newly created world is a handmade map, rather than a generated world? I tried overwriting the world database during mod loading but it corrupted every time. Will I have to wait for rubenwardy's custom main menus?

[Sokomine]

In theory, you might start with a singlenode map and place everything there by using place_schematic. That might be pretty slow and impractical for large maps. There's also sometimes trouble with players falling down through the non-existing floor when using singlenode and placing things manually. So perhaps there's really only waiting...

[PolySaken]

In theory, you might start with a singlenode map and place everything there by using place_schematic. That might be pretty slow and impractical for large maps. There's also sometimes trouble with players falling down through the non-existing floor when using singlenode and placing things manually. So perhaps there's really only waiting...

I tried building everything with voxelmanip and such but it takes ages so the player falling out of the world is the main issue.
Also they can see otherwise hidden areas during generation

[Festus1965]

Can you enlarge why you want to have like this ?

A moment I thought like, every new gamer might get a copy same start area as the others,
on the other side, every -older/used- server IS loading a handmade map, as most of former generated Mapblock might not be the same as beginning anymore.

May, if I/we ? understand more clear what you want, we might find a solution ?

[PolySaken]

I wan to make a game where the map is handmade like most actual games, instead of generating a new one each time.

[Zughy]

The author wants to use prefabs, i.e. schematics. Sokomine solution is the closest one to what you want, I think

[LibraSubtilis]

You don't have to place everything yourself, if you use a specific seed. It is possible to set the seed with minetest.set_mapgen_setting.

[PolySaken]

You don't have to place everything yourself, if you use a specific seed. It is possible to set the seed with minetest.set_mapgen_setting.

I want to build everything myself.

[Hume2]

I made a mod for that purpose: viewtopic.php?f=9&t=24214 (exaple usage)
It places a map when the world is created and it can place the map there any time after, restart it, etc.. However, it is effective only for smaller maps and it starts to be slow for maps which are bigger than 80×80×80. It's a shame that Minetest doesn't support such operations in the core. There is a theoretical solution: Redirect the mapchunks to the sample map as long as they aren't modified. And when one mapchunk is modified, copy it to the world file and modify it there.

[Zughy]

Or you could load new blocks asynchronously like Skywars do when it regenerates a map

[orwell]

IMO support for this should be somehow implemented in the engine. There could be an option in the game.conf to pre-initialize any world created with this game by copying a world directory supplied with the game (in sqlite format). It would probably be sufficient to restrict this to sqlite database backends as it targets inexperienced users (servers using another backend would need to "migrate" this world afterwards)
The "tutorial" subgame could also profit from this.

Alternatively, it is possible to place a complete subgame into the <world dir>/game/ directory. Minetest then uses the game provided there. The main menu does not display this properly, but a PR exists. You could provide your game as a packaged world with the game in the game/ directory and instruct users to unpack it for a new world.

[rubenwardy]

The way I do this with Craft the Web, Qiskit Blocks, and CTF is to place a schematic as a custom map generator.

See https://github.com/CERN/CTW/blob/develo ... ge.lua#L34 for example code

[bzt]

You could also take a look at Wuzzy's "Tutorial" game.
https://content.minetest.net/packages/Wuzzy/tutorial/

It loads a pretty big castle as map quickly without the user seeing the hidden parts.

Cheers,
bzt

[LibraSubtilis]

You don't have to place everything yourself, if you use a specific seed. It is possible to set the seed with minetest.set_mapgen_setting.

I want to build everything myself.

Yes, that was obvious. I was just suggesting an alternative. I think there are many good seeds that could be used as a base for a good map.

[hex]

Try writing to the map DB *after* all mods are loaded, and it should be fine.

[PolySaken]

I think I'll wait for custom main menus so I can make the 'new world' button just copy a premade file.

[hex]

Wasn't there a thing that worked in reverse, allowing you to bundle the game in the world folder?

[PolySaken]

Wasn't there a thing that worked in reverse, allowing you to bundle the game in the world folder?

there is for mods, but since worlds only show up in the correct game menu world-specific games would be impossible.