Thanks! Guess I have to update my local lua_api.txt :)paramat wrote:You can actually stop caves removing particular nodes (in MGV6 and MGV7) by adding:
is _ground_content = false
True...paramat wrote:If i wrote a mapgen with a biome API that out-performed MGV7 it would be too slow for most people.
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data[vi] = c_n23destone Code: Select all
local c_sandstone = minetest.get_content_id("default:sandstone")Code: Select all
data[vi] = c_sandstoneCode: Select all
local c_dirt = minetest.get_content_id("default:dirt") -- *
local c_grass = minetest.get_content_id("default:dirt_with_grass") -- *
local sidelen = x1 - x0 + 1
local chulens = {x=sidelen, y=sidelen, z=sidelen}
local minposxyz = {x=x0, y=y0, z=z0}
local minposxz = {x=x0, y=z0}
local nvals_terrain = minetest.get_perlin_map(np_terrain, chulens):get3dMap_flat(minposxyz)
local nvals_biome = minetest.get_perlin_map(np_biome, chulens):get2dMap_flat(minposxz)
local nixyz = 1 -- 3D noise index
local nixz = 1 -- 2D noise index
local stable = {}
local under = {} -- *
for z = z0, z1 do
for x = x0, x1 do
local si = x - x0 + 1
under[si] = 0 -- *
local nodename = minetest.get_node({x=x,y=y0-1,z=z}).name
if nodename == "air"
or nodename == "default:water_source" then
stable[si] = 0
else
stable[si] = STABLE
end
end
for y = y0, y1 do
local vi = area:index(x0, y, z)
local viu = area:index(x0, y-1, z) -- *
for x = x0, x1 do
local si = x - x0 + 1
local grad = (TERCEN - y) / TERSCA
local density = nvals_terrain[nixyz] + grad
local n_biome = nvals_biome[nixz] -- biome noise for node
local biome = false -- set biome id to undefined
if n_biome > 0.46 + math.random() * 0.04 then -- set biome id
biome = 3
elseif n_biome < -0.5 + math.random() * 0.04 then
biome = 1
else
biome = 2
end
if density >= TSTONE then
if biome == 3 then
data[vi] = c_n23destone
else -- biomes 1 and 2
data[vi] = c_n23stone
end
stable[si] = stable[si] + 1
under[si] = 0 -- *
elseif density >= 0 and density < TSTONE and stable[si] >= 2 then
if y <= YWATER + 3 then
data[vi] = c_sand
under[si] = 0 -- *
elseif biome == 3 then
data[vi] = c_desand
under[si] = 3 -- *
elseif biome == 1 then
data[vi] = c_flosand
under[si] = 1 -- *
else -- biome = 2
data[vi] = c_dirt -- *
under[si] = 2 -- *
end
elseif y <= YWATER then
if biome == 1 and y >= YWATER - 3 then
data[vi] = c_ice
else -- biomes 2 and 3
data[vi] = c_water
end
stable[si] = 0
under[si] = 0 -- *
elseif density < 0 and under[si] ~= 0 then -- *
if under[si] = 2 then -- *
data[viu] = c_grass -- *
end -- *
under[si] = 0 -- *
else
data[vi] = c_air
stable[si] = 0
under[si] = 0 -- *
end
nixyz = nixyz + 1 -- increment 3D noise index
nixz = nixz + 1 -- increment 2D noise index
vi = vi + 1
viu = viu + 1 -- *
end
nixz = nixz - 80 -- rewind 2D noise index by 80 nodes for next x row above
end
nixz = nixz + 80 -- fast-forward 2D noise index by 80 nodes for next northward xy plane
endHey Paramat, your code works fine! Thank you very much, it is very usefull! I'm trying to customize this mod and add some new features, so I have some questions:paramat wrote:Does that code work?
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for z = z0, z1 do -- for each xy plane progressing northwards
for x = x0, x1 do
local si = x - x0 + 1
local nodename = minetest.get_node({x=x,y=y0-1,z=z}).name
if nodename == "air"
or nodename == "default:water_source" then
stable[si] = 0
else
stable[si] = STABLE
end
end
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local si = x - x0 + 1
local nodename = minetest.get_node({x=x,y=y0-1,z=z}).name
if nodename == "air"
or nodename == "ignore"
or nodename == "default:water_source" then
stable[si] = 0
else
stable[si] = STABLE
end
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local si = x - x0 + 1
local nodename = minetest.get_node({x=x,y=y0-1,z=z}).name
if nodename == "ignore"
or minetest.registered_nodes[nodename].walkable == false then
stable[si] = 0
else
stable[si] = STABLE
end
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local chulay = math.floor((minp.y + 32) / 80) -- chunk layer number, 0 = surface chunk
local tercen = (math.floor(chulay / CHUINT) * CHUINT + CHUINT / 2) * 80 - 32 -- terrain centre of this realm layer
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