-- stratum ore helper

local function add_stratum(y_min, y_max, node)

	minetest.register_ore({
		ore_type = "stratum",
		ore = node,
		wherein = {"bakedclay:orange"},
		clust_scarcity = 1,
		y_max = y_max,
		y_min = y_min,
		biomes = {"mesa"}
	})
end

-- add baked clay layers (mesa biome is between 20 and 71)

for n = 0, 5 do

	add_stratum(20 + (n * 9), 21 + (n * 9), "bakedclay:brown")
	add_stratum(22 + (n * 9), 23 + (n * 9), "bakedclay:grey")
	add_stratum(25 + (n * 9), 26 + (n * 9), "bakedclay:red")
end

-- scatter ore helper

local function add_ore(a, b, c, d, e, f, g)

	minetest.register_ore({
		ore_type = "scatter",
		ore = a,
		wherein = b,
		clust_scarcity = c,
		clust_num_ores = d,
		clust_size = e,
		y_min = f,
		y_max = g
	})
end

-- Coal

add_ore("default:stone_with_coal", "default:desert_stone", 24*24*24, 27, 6, -31000, -16)

-- Iron

add_ore("default:stone_with_iron", "default:desert_stone", 9*9*9, 5, 3, -63, -16)
add_ore("default:stone_with_iron", "default:desert_stone", 24*24*24, 27, 6, -31000, -64)

--Mese

add_ore("default:stone_with_mese", "default:desert_stone", 14*14*14, 5, 3, -31000, -256)

-- Gold

add_ore("default:stone_with_gold", "default:desert_stone", 15*15*15, 3, 2, -255, -64)
add_ore("default:stone_with_gold", "default:desert_stone", 13*13*13, 5, 3, -31000, -256)

-- Diamond

add_ore("default:stone_with_diamond", "default:desert_stone", 17*17*17, 4, 3, -255, -128)
add_ore("default:stone_with_diamond", "default:desert_stone", 15*15*15, 4, 3, -31000, -256)

-- Copper

add_ore("default:stone_with_copper", "default:desert_stone", 9*9*9, 5, 3, -31000, -64)

-- Coral Sand

add_ore("ethereal:sandy", "default:sand", 10*10*10, 24, 4, -100, -10)

-- Etherium

minetest.register_ore({
	ore_type = "scatter",
	ore = "ethereal:etherium_ore",
	wherein = "default:desert_stone",
	clust_scarcity = 10 * 10 * 10,
	clust_num_ores = 1,
	clust_size = 1,
	y_min = 5,
	y_max = 40,
	biomes = {"caves"}
})

-- Etherium in floatlands

minetest.register_ore({
	ore_type = "scatter",
	ore = "ethereal:stone_with_etherium_ore",
	wherein = "default:stone",
	clust_scarcity = 9 * 9 * 9,
	clust_num_ores = 6,
	clust_size = 2,
	y_min = 1025,
	y_max = 31000
})