47 lines
1.6 KiB
Lua
47 lines
1.6 KiB
Lua
-- minetest/default/mapgen.lua
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local function generate_ore(name, wherein, minp, maxp, seed, chunks_per_volume, ore_per_chunk, height_min, height_max)
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if maxp.y < height_min or minp.y > height_max then
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return
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end
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local y_min = math.max(minp.y, height_min)
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local y_max = math.min(maxp.y, height_max)
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local volume = (maxp.x-minp.x+1)*(y_max-y_min+1)*(maxp.z-minp.z+1)
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local pr = PseudoRandom(seed)
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local num_chunks = math.floor(chunks_per_volume * volume)
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local inverse_chance = math.floor(27 / ore_per_chunk)
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--print("generate_ore num_chunks: "..dump(num_chunks))
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for i=1,num_chunks do
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local y0 = pr:next(y_min, y_max)
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if y0 >= height_min and y0 <= height_max then
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local x0 = pr:next(minp.x, maxp.x)
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local z0 = pr:next(minp.z, maxp.z)
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local p0 = {x=x0, y=y0, z=z0}
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for x1=-1,1 do
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for y1=-1,1 do
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for z1=-1,1 do
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if pr:next(1,inverse_chance) == 1 then
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local x2 = x0+x1
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local y2 = y0+y1
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local z2 = z0+z1
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local p2 = {x=x2, y=y2, z=z2}
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if minetest.env:get_node(p2).name == wherein then
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minetest.env:set_node(p2, {name=name})
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end
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end
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end
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end
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end
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end
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end
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--print("generate_ore done")
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end
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minetest.register_on_generated(function(minp, maxp, seed)
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generate_ore("default:stone_with_coal", "default:stone", minp, maxp, seed, 1/8/8/8, 5, -64, 64)
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generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+1, 1/16/16/16, 5, 3, 7)
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generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+1, 1/12/12/12, 5, -16, 2)
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generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+1, 1/9/9/9, 5, -64, -17)
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end)
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