gistfile1.lua

minetest.register_alias("mapgen_air", "air")
minetest.register_alias("mapgen_stone", "air")
minetest.register_alias("mapgen_tree", "air")
minetest.register_alias("mapgen_leaves", "air")
minetest.register_alias("mapgen_apple", "air")
minetest.register_alias("mapgen_water_source", "air")
minetest.register_alias("mapgen_dirt", "air")
minetest.register_alias("mapgen_sand", "air")
minetest.register_alias("mapgen_gravel", "air")
minetest.register_alias("mapgen_clay", "air")
minetest.register_alias("mapgen_lava_source", "air")
minetest.register_alias("mapgen_cobble", "air")
minetest.register_alias("mapgen_mossycobble", "air")
minetest.register_alias("mapgen_dirt_with_grass", "air")
minetest.register_alias("mapgen_junglegrass", "air")
minetest.register_alias("mapgen_stone_with_coal", "air")
minetest.register_alias("mapgen_stone_with_iron", "air")
minetest.register_alias("mapgen_mese", "air")
minetest.register_alias("mapgen_desert_sand", "air")
minetest.register_alias("mapgen_desert_stone", "air")

minetest.register_on_generated(function(minp, maxp, seed)
	if minp.y < 0 then
		if maxp.y > 0 then
			for x=minp.x,maxp.x do
				for y=minp.y,-1 do
					for z=minp.z,maxp.z do
						local pos = {x=x, y=y, z=z}
						minetest.env:set_node(pos, {name="default:dirt"})
					end
				end
			end
			for x=minp.x,maxp.x do
				for z=minp.z,maxp.z do
					local pos = {x=x, y=0, z=z}
					minetest.env:set_node(pos, {name="default:dirt_with_grass"})
				end
			end
		else
			for x=minp.x,maxp.x do
				for y=minp.y,maxp.y do
					for z=minp.z,maxp.z do
						local pos = {x=x, y=y, z=z}
						minetest.env:set_node(pos, {name="default:dirt"})
					end
				end
			end
		end
	end
end)