I have often considered adding a new mapgen to MT that would be a modernised version of Mapgen V6 that is as similar as possible but functions like the other mapgens and has all the biomes registered by games.
However, it is actually possible to approximately emulate Mapgen V6 in Mapgen V7 using customised settings.
This is only possible in MT 5.2.0 or later due to the 'randomwalk' caves now being more configurable, allowing Mapgen V7 to have Mapgen V6 type caves.
Copy-paste the lines below into your 'minetest.conf' file before starting a new Mapgen V7 world:
////////////////////////////////
mgv7_spflags = nomountains, noridges, nofloatlands, nocaverns
mgv7_cave_width = 10
mgv7_large_cave_depth = 47
mgv7_small_cave_num_min = 24
mgv7_small_cave_num_max = 24
mgv7_large_cave_num_min = 2
mgv7_large_cave_num_max = 2
mgv7_np_terrain_base = {
offset = 21.0,
scale = 16.0,
spread = (500, 500, 500),
seed = 85039,
octaves = 5,
persistence = 0.6,
lacunarity = 2.0,
flags = eased
}
mgv7_np_terrain_alt = {
offset = -3.0,
scale = 20.0,
spread = (250, 250, 250),
seed = 82341,
octaves = 5,
persistence = 0.6,
lacunarity = 2.0,
flags = eased
}
mgv7_np_terrain_persist = {
offset = 0.6,
scale = 0.0,
spread = (2000, 2000, 2000),
seed = 539,
octaves = 1,
persistence = 0.6,
lacunarity = 2.0,
flags = eased
}
mgv7_np_height_select = {
offset = -19.5,
scale = 100.0,
spread = (250, 250, 250),
seed = 4213,
octaves = 5,
persistence = 0.69,
lacunarity = 2.0,
flags = eased
}
mgv7_np_filler_depth = {
offset = 4.0,
scale = 2.0,
spread = (200, 200, 200),
seed = 91013,
octaves = 3,
persistence = 0.55,
lacunarity = 2.0,
flags = eased
}
////////////////////////////////
Or you can set these parameters in the 'All Settings' menu if you prefer, but that will take much longer to do.
The emulation is only approximate, it differs in the following ways:
- There is no 'mudflow' erosion
- The cliff / slope transitions between the lowland and highland do not have a wide range of steepnesses, they are now all steep cliffs
- The number of small and large caves per mapchunk is fixed and not varied by noise or biome
- Using the same world seed as a Mapgen V6 world will probably not result in hills, lakes, cliffs, caves, dungeons etc. being in the same locations, even though the character and elements of the mapgen will be similar
- When using MTGame, lava is found below y = -256 and ores are deeper, just like all non-V6 mapgens