LUA port of mg v7?

[burli]

Hi,
has anyone ported mg v7 to lua yet?

[red-001]

Why would you want that? Mapgens written in c++ are a lot faster then ones written in lua.

[burli]

Because it's difficult or impossible to add new features or modify specific parts of a c++ mg in lua. I want to modify the mg and maybe port it back to c++ later

[red-001]

Well I'm pretty sure that no-one ported it. You will have to do it yourself or make your modifications in C++.

[fishyWET]

There is a simple api for making biomes in v7/v5/valleys mapgen
https://github.com/minetest/minetest/blob/master/doc/lua_api.txt#L3947-L4077
Of which is used by mods such as ethereal.

[burli]

I know, but I think it is pretty useless to write a c++ mapgen and than dump most of it and replace it with lua. And still there are things I can't add without lots of issues, for example I can't add caves without flying plants

The current mapgen system is damage by design and it's easier to write the mapgen completely in lua, which is a problem because of the memory limit of luajit

[paramat]

> I know, but I think it is pretty useless to write a c++ mapgen and than dump most of it and replace it with lua

? The biome API is accessed from Lua but is engine C++ code so is very fast.

Flying plants? What is the specific problem?

> The current mapgen system is damage by design

In what way?

You can use normal Lua instead of LuaJIT if you want to write complex Lua mapgens, i use normal Lua (i have to).
See my mods for good examples of Lua mapgen.
I could write a Lua mgv7 but am not interested.

[burli]

> I know, but I think it is pretty useless to write a c++ mapgen and than dump most of it and replace it with lua

? The biome API is accessed from Lua but is engine C++ code so is very fast.

Flying plants? What is the specific problem?

Any mod I tried or I have written by myself that adds some kind of caves has the same problem. Any time, the caves hit the surface I have flying plants over that hole, even if I removed all the decoration and placed it again

> The current mapgen system is damage by design

In what way?

You can use it "as is", maybe add/modify some decoration. But larger modifications are slow, have ugly glitches or are just impossible.

You can use normal Lua instead of LuaJIT if you want to write complex Lua mapgens, i use normal Lua (i have to).
See my mods for good examples of Lua mapgen.

I know that I can use Lua instead of LuaJIT, but do I want that? I know that I can write the whole mapgen in Lua like the valleys mg. But more than a proof of concept is pointless.