77 lines
2.7 KiB
Lua
77 lines
2.7 KiB
Lua
-- minetest/default/mapgen.lua
|
|
|
|
local function generate_ore(name, wherein, minp, maxp, seed, chunks_per_volume, ore_per_chunk, height_min, height_max)
|
|
if maxp.y < height_min or minp.y > height_max then
|
|
return
|
|
end
|
|
local y_min = math.max(minp.y, height_min)
|
|
local y_max = math.min(maxp.y, height_max)
|
|
local volume = (maxp.x-minp.x+1)*(y_max-y_min+1)*(maxp.z-minp.z+1)
|
|
local pr = PseudoRandom(seed)
|
|
local num_chunks = math.floor(chunks_per_volume * volume)
|
|
local inverse_chance = math.floor(27 / ore_per_chunk)
|
|
--print("generate_ore num_chunks: "..dump(num_chunks))
|
|
for i=1,num_chunks do
|
|
local y0 = pr:next(y_min, y_max)
|
|
if y0 >= height_min and y0 <= height_max then
|
|
local x0 = pr:next(minp.x, maxp.x)
|
|
local z0 = pr:next(minp.z, maxp.z)
|
|
local p0 = {x=x0, y=y0, z=z0}
|
|
for x1=-1,1 do
|
|
for y1=-1,1 do
|
|
for z1=-1,1 do
|
|
if pr:next(1,inverse_chance) == 1 then
|
|
local x2 = x0+x1
|
|
local y2 = y0+y1
|
|
local z2 = z0+z1
|
|
local p2 = {x=x2, y=y2, z=z2}
|
|
if minetest.env:get_node(p2).name == wherein then
|
|
minetest.env:set_node(p2, {name=name})
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
--print("generate_ore done")
|
|
end
|
|
|
|
minetest.register_on_generated(function(minp, maxp, seed)
|
|
generate_ore("default:stone_with_coal", "default:stone", minp, maxp, seed, 1/8/8/8, 5, -64, 64)
|
|
generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+1, 1/16/16/16, 5, 3, 7)
|
|
generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+2, 1/12/12/12, 5, -16, 2)
|
|
generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+3, 1/9/9/9, 5, -64, -17)
|
|
-- Generate clay
|
|
if maxp.y >= 2 and minp.y <= 0 then
|
|
-- Assume X and Z lengths are equal
|
|
local divlen = 4
|
|
local divs = (maxp.x-minp.x)/divlen+1;
|
|
for divx=1,divs do
|
|
for divz=1,divs do
|
|
local cx = minp.x + math.floor((divx+0.5)*divlen)
|
|
local cz = minp.z + math.floor((divz+0.5)*divlen)
|
|
local is_shallow = true
|
|
if minetest.env:get_node({x=cx-divlen*2,y=1,z=cz+0}).name == "default:water_source" or
|
|
minetest.env:get_node({x=cx+divlen*2,y=1,z=cz+0}).name == "default:water_source" or
|
|
minetest.env:get_node({x=cx,y=1,z=cz-divlen*2}).name == "default:water_source" or
|
|
minetest.env:get_node({x=cx,y=1,z=cz+divlen*2}).name == "default:water_source" then
|
|
is_shallow = false
|
|
end
|
|
if is_shallow and
|
|
minetest.env:get_node({x=cx,y=1,z=cz}).name == "default:water_source" and
|
|
minetest.env:get_node({x=cx,y=0,z=cz}).name == "default:sand" then
|
|
for x1=-divlen,divlen do
|
|
for z1=-divlen,divlen do
|
|
if minetest.env:get_node({x=cx+x1,y=0,z=cz+z1}).name == "default:sand" then
|
|
minetest.env:set_node({x=cx+x1,y=0,z=cz+z1}, {name="default:clay"})
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end)
|
|
|