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- -- minetest/default/mapgen.lua
- --
- -- Aliases for map generator outputs
- --
- minetest.register_alias("mapgen_air", "air")
- minetest.register_alias("mapgen_stone", "default:stone")
- minetest.register_alias("mapgen_stone_with_gold", "mitchsmod:stone_with_gold")
- minetest.register_alias("mapgen_stone_with_diamond", "mitchsmod:stone_with_diamond")
- minetest.register_alias("mapgen_stone_with_obsidian", "mitchsmod:stone_with_obsidian")
- -- Ore generation
- --
- local function generate_ore(name, wherein, minp, maxp, seed, chunks_per_volume, chunk_size, 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(chunk_size*chunk_size*chunk_size / 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-chunk_size+1)
- if y0 >= height_min and y0 <= height_max then
- local x0 = pr:next(minp.x, maxp.x-chunk_size+1)
- local z0 = pr:next(minp.z, maxp.z-chunk_size+1)
- local p0 = {x=x0, y=y0, z=z0}
- for x1=0,chunk_size-1 do
- for y1=0,chunk_size-1 do
- for z1=0,chunk_size-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 regular ores
- generate_ore("mitchsmod:stone_with_gold", "default:stone", minp, maxp, seed+7, 1/24/24/24, 6,7, -31000, 64)
- generate_ore("mitchsmod:stone_with_diamond", "default:stone", minp, maxp, seed+7, 1/24/24/24, 6,7, -31000, 0)
- generate_ore("mitchsmod:stone_with_obsidian", "default:stone", minp, maxp, seed+6, 1/24/24/24, 6,6, -31000, -64)
- end)
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