-- Diorite, andesite and granite
local specialstones = { "mcl_core:diorite", "mcl_core:andesite", "mcl_core:granite" }
for s=1, #specialstones do
	local node = specialstones[s]
	minetest.register_ore({
		ore_type       = "blob",
		ore            = node,
		wherein        = {"mcl_core:stone"},
		clust_scarcity = 15*15*15,
		clust_num_ores = 33,
		clust_size     = 5,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_vars.mg_overworld_max,
		noise_params = {
			offset  = 0,
			scale   = 1,
			spread  = {x=250, y=250, z=250},
			seed    = 12345,
			octaves = 3,
			persist = 0.6,
			lacunarity = 2,
			flags = "defaults",
		}
	})
	minetest.register_ore({
		ore_type       = "blob",
		ore            = node,
		wherein        = {"mcl_core:stone"},
		clust_scarcity = 10*10*10,
		clust_num_ores = 58,
		clust_size     = 7,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_vars.mg_overworld_max,
		noise_params = {
			offset  = 0,
			scale   = 1,
			spread  = {x=250, y=250, z=250},
			seed    = 12345,
			octaves = 3,
			persist = 0.6,
			lacunarity = 2,
			flags = "defaults",
		}
	})
end

local stonelike = {"mcl_core:stone", "mcl_core:diorite", "mcl_core:andesite", "mcl_core:granite"}

-- Dirt
minetest.register_ore({
	ore_type       = "blob",
	ore            = "mcl_core:dirt",
	wherein        = stonelike,
	clust_scarcity = 15*15*15,
	clust_num_ores = 33,
	clust_size     = 4,
	y_min          = mcl_vars.mg_overworld_min,
	y_max          = mcl_vars.mg_overworld_max,
	noise_params = {
		offset  = 0,
		scale   = 1,
		spread  = {x=250, y=250, z=250},
		seed    = 12345,
		octaves = 3,
		persist = 0.6,
		lacunarity = 2,
		flags = "defaults",
	}
})

-- Gravel
minetest.register_ore({
	ore_type       = "blob",
	ore            = "mcl_core:gravel",
	wherein        = stonelike,
	clust_scarcity = 14*14*14,
	clust_num_ores = 33,
	clust_size     = 5,
	y_min          = mcl_vars.mg_overworld_min,
	y_max          = mcl_worlds.layer_to_y(111),
	noise_params = {
		offset  = 0,
		scale   = 1,
		spread  = {x=250, y=250, z=250},
		seed    = 12345,
		octaves = 3,
		persist = 0.6,
		lacunarity = 2,
		flags = "defaults",
	}
})


if minetest.settings:get_bool("mcl_generate_ores", true) then
	--
	-- Coal
	--

	-- Common spawn
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_coal",
		wherein        = stonelike,
		clust_scarcity = 525*3,
		clust_num_ores = 5,
		clust_size     = 3,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_worlds.layer_to_y(50),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_coal",
		wherein        = stonelike,
		clust_scarcity = 510*3,
		clust_num_ores = 8,
		clust_size     = 3,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_worlds.layer_to_y(50),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_coal",
		wherein        = stonelike,
		clust_scarcity = 500*3,
		clust_num_ores = 12,
		clust_size     = 3,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_worlds.layer_to_y(50),
	})

	-- Medium-rare spawn
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_coal",
		wherein        = stonelike,
		clust_scarcity = 550*3,
		clust_num_ores = 4,
		clust_size     = 2,
		y_min          = mcl_worlds.layer_to_y(51),
		y_max          = mcl_worlds.layer_to_y(80),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_coal",
		wherein        = stonelike,
		clust_scarcity = 525*3,
		clust_num_ores = 6,
		clust_size     = 3,
		y_min          = mcl_worlds.layer_to_y(51),
		y_max          = mcl_worlds.layer_to_y(80),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_coal",
		wherein        = stonelike,
		clust_scarcity = 500*3,
		clust_num_ores = 8,
		clust_size     = 3,
		y_min          = mcl_worlds.layer_to_y(51),
		y_max          = mcl_worlds.layer_to_y(80),
	})

	-- Rare spawn
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_coal",
		wherein         = stonelike,
		clust_scarcity = 600*3,
		clust_num_ores = 3,
		clust_size     = 2,
		y_min          = mcl_worlds.layer_to_y(81),
		y_max          = mcl_worlds.layer_to_y(128),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_coal",
		wherein         = stonelike,
		clust_scarcity = 550*3,
		clust_num_ores = 4,
		clust_size     = 3,
		y_min          = mcl_worlds.layer_to_y(81),
		y_max          = mcl_worlds.layer_to_y(128),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_coal",
		wherein         = stonelike,
		clust_scarcity = 500*3,
		clust_num_ores = 5,
		clust_size     = 3,
		y_min          = mcl_worlds.layer_to_y(81),
		y_max          = mcl_worlds.layer_to_y(128),
	})

	--
	-- Iron
	--
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_iron",
		wherein         = stonelike,
		clust_scarcity = 830,
		clust_num_ores = 5,
		clust_size     = 3,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_worlds.layer_to_y(39),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_iron",
		wherein         = stonelike,
		clust_scarcity = 1660,
		clust_num_ores = 4,
		clust_size     = 2,
		y_min          = mcl_worlds.layer_to_y(40),
		y_max          = mcl_worlds.layer_to_y(63),
	})

	--
	-- Gold
	--

	-- Common spawn
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_gold",
		wherein         = stonelike,
		clust_scarcity = 4775,
		clust_num_ores = 5,
		clust_size     = 3,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_worlds.layer_to_y(30),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_gold",
		wherein         = stonelike,
		clust_scarcity = 6560,
		clust_num_ores = 7,
		clust_size     = 3,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_worlds.layer_to_y(30),
	})

	-- Rare spawn
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_gold",
		wherein         = stonelike,
		clust_scarcity = 13000,
		clust_num_ores = 4,
		clust_size     = 2,
		y_min          = mcl_worlds.layer_to_y(31),
		y_max          = mcl_worlds.layer_to_y(33),
	})

	--
	-- Diamond
	--

	-- Common spawn
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_diamond",
		wherein         = stonelike,
		clust_scarcity = 10000,
		clust_num_ores = 4,
		clust_size     = 3,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_worlds.layer_to_y(12),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_diamond",
		wherein         = stonelike,
		clust_scarcity = 5000,
		clust_num_ores = 2,
		clust_size     = 2,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_worlds.layer_to_y(12),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_diamond",
		wherein         = stonelike,
		clust_scarcity = 10000,
		clust_num_ores = 8,
		clust_size     = 3,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_worlds.layer_to_y(12),
	})

	-- Rare spawn
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_diamond",
		wherein         = stonelike,
		clust_scarcity = 20000,
		clust_num_ores = 1,
		clust_size     = 1,
		y_min          = mcl_worlds.layer_to_y(13),
		y_max          = mcl_worlds.layer_to_y(15),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_diamond",
		wherein         = stonelike,
		clust_scarcity = 20000,
		clust_num_ores = 2,
		clust_size     = 2,
		y_min          = mcl_worlds.layer_to_y(13),
		y_max          = mcl_worlds.layer_to_y(15),
	})

		--
	-- Ancient debris
	--
	local ancient_debris_wherein = {"mcl_nether:netherrack","mcl_blackstone:blackstone","mcl_blackstone:basalt"}
	-- Common spawn
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_nether:ancient_debris",
		wherein         = ancient_debris_wherein,
		clust_scarcity = 25000, -- 0.004% chance
		clust_num_ores = 3,
		clust_size     = 3,
		y_min = mcl_vars.mg_nether_min + 8,
		y_max = mcl_vars.mg_nether_min + 22,
	})

		-- Rare spawn (below)
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_nether:ancient_debris",
		wherein         = ancient_debris_wherein,
		clust_scarcity = 32000,
		clust_num_ores = 2,
		clust_size     = 3,
		y_min = mcl_vars.mg_nether_min,
		y_max = mcl_vars.mg_nether_min + 8,
	})

	-- Rare spawn (above)
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_nether:ancient_debris",
		wherein         = ancient_debris_wherein,
		clust_scarcity = 32000,
		clust_num_ores = 2,
		clust_size     = 3,
		y_min = mcl_vars.mg_nether_min + 22,
		y_max = mcl_vars.mg_nether_min + 119,
	})

	--
	-- Redstone
	--

	-- Common spawn
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_redstone",
		wherein         = stonelike,
		clust_scarcity = 500,
		clust_num_ores = 4,
		clust_size     = 3,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_worlds.layer_to_y(13),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_redstone",
		wherein         = stonelike,
		clust_scarcity = 800,
		clust_num_ores = 7,
		clust_size     = 4,
		y_min          = mcl_vars.mg_overworld_min,
		y_max          = mcl_worlds.layer_to_y(13),
	})

	-- Rare spawn
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_redstone",
		wherein         = stonelike,
		clust_scarcity = 1000,
		clust_num_ores = 4,
		clust_size     = 3,
		y_min          = mcl_worlds.layer_to_y(13),
		y_max          = mcl_worlds.layer_to_y(15),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_redstone",
		wherein         = stonelike,
		clust_scarcity = 1600,
		clust_num_ores = 7,
		clust_size     = 4,
		y_min          = mcl_worlds.layer_to_y(13),
		y_max          = mcl_worlds.layer_to_y(15),
	})

	--
	-- Emerald
	--

	if mg_name == "v6" then
		-- Generate everywhere in v6, but rarely.

		-- Common spawn
		minetest.register_ore({
			ore_type       = "scatter",
			ore            = "mcl_core:stone_with_emerald",
			wherein        = stonelike,
			clust_scarcity = 14340,
			clust_num_ores = 1,
			clust_size     = 1,
			y_min          = mcl_vars.mg_overworld_min,
			y_max          = mcl_worlds.layer_to_y(29),
		})
		-- Rare spawn
		minetest.register_ore({
			ore_type       = "scatter",
			ore            = "mcl_core:stone_with_emerald",
			wherein        = stonelike,
			clust_scarcity = 21510,
			clust_num_ores = 1,
			clust_size     = 1,
			y_min          = mcl_worlds.layer_to_y(30),
			y_max          = mcl_worlds.layer_to_y(32),
		})
	end

	--
	-- Lapis Lazuli
	--

	-- Common spawn (in the center)
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_lapis",
		wherein         = stonelike,
		clust_scarcity = 10000,
		clust_num_ores = 7,
		clust_size     = 4,
		y_min          = mcl_worlds.layer_to_y(14),
		y_max          = mcl_worlds.layer_to_y(16),
	})

	-- Rare spawn (below center)
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_lapis",
		wherein         = stonelike,
		clust_scarcity = 12000,
		clust_num_ores = 6,
		clust_size     = 3,
		y_min          = mcl_worlds.layer_to_y(10),
		y_max          = mcl_worlds.layer_to_y(13),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_lapis",
		wherein         = stonelike,
		clust_scarcity = 14000,
		clust_num_ores = 5,
		clust_size     = 3,
		y_min          = mcl_worlds.layer_to_y(6),
		y_max          = mcl_worlds.layer_to_y(9),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_lapis",
		wherein         = stonelike,
		clust_scarcity = 16000,
		clust_num_ores = 4,
		clust_size     = 3,
		y_min          = mcl_worlds.layer_to_y(2),
		y_max          = mcl_worlds.layer_to_y(5),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_lapis",
		wherein         = stonelike,
		clust_scarcity = 18000,
		clust_num_ores = 3,
		clust_size     = 2,
		y_min          = mcl_worlds.layer_to_y(0),
		y_max          = mcl_worlds.layer_to_y(2),
	})

	-- Rare spawn (above center)
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_lapis",
		wherein         = stonelike,
		clust_scarcity = 12000,
		clust_num_ores = 6,
		clust_size     = 3,
		y_min          = mcl_worlds.layer_to_y(17),
		y_max          = mcl_worlds.layer_to_y(20),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_lapis",
		wherein         = stonelike,
		clust_scarcity = 14000,
		clust_num_ores = 5,
		clust_size     = 3,
		y_min          = mcl_worlds.layer_to_y(21),
		y_max          = mcl_worlds.layer_to_y(24),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_lapis",
		wherein         = stonelike,
		clust_scarcity = 16000,
		clust_num_ores = 4,
		clust_size     = 3,
		y_min          = mcl_worlds.layer_to_y(25),
		y_max          = mcl_worlds.layer_to_y(28),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_lapis",
		wherein         = stonelike,
		clust_scarcity = 18000,
		clust_num_ores = 3,
		clust_size     = 2,
		y_min          = mcl_worlds.layer_to_y(29),
		y_max          = mcl_worlds.layer_to_y(32),
	})
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "mcl_core:stone_with_lapis",
		wherein         = stonelike,
		clust_scarcity = 32000,
		clust_num_ores = 1,
		clust_size     = 1,
		y_min          = mcl_worlds.layer_to_y(31),
		y_max          = mcl_worlds.layer_to_y(32),
	})
end

if not superflat then
-- Water and lava springs (single blocks of lava/water source)
-- Water appears at nearly every height, but not near the bottom
minetest.register_ore({
	ore_type       = "scatter",
	ore            = "mcl_core:water_source",
	wherein         = {"mcl_core:stone", "mcl_core:andesite", "mcl_core:diorite", "mcl_core:granite", "mcl_core:dirt"},
	clust_scarcity = 9000,
	clust_num_ores = 1,
	clust_size     = 1,
	y_min          = mcl_worlds.layer_to_y(5),
	y_max          = mcl_worlds.layer_to_y(128),
})

-- Lava springs are rather common at -31 and below
minetest.register_ore({
	ore_type       = "scatter",
	ore            = "mcl_core:lava_source",
	wherein         = stonelike,
	clust_scarcity = 2000,
	clust_num_ores = 1,
	clust_size     = 1,
	y_min          = mcl_worlds.layer_to_y(1),
	y_max          = mcl_worlds.layer_to_y(10),
})

minetest.register_ore({
	ore_type       = "scatter",
	ore            = "mcl_core:lava_source",
	wherein         = stonelike,
	clust_scarcity = 9000,
	clust_num_ores = 1,
	clust_size     = 1,
	y_min          = mcl_worlds.layer_to_y(11),
	y_max          = mcl_worlds.layer_to_y(31),
})

-- Lava springs will become gradually rarer with increasing height
minetest.register_ore({
	ore_type       = "scatter",
	ore            = "mcl_core:lava_source",
	wherein         = stonelike,
	clust_scarcity = 32000,
	clust_num_ores = 1,
	clust_size     = 1,
	y_min          = mcl_worlds.layer_to_y(32),
	y_max          = mcl_worlds.layer_to_y(47),
})

minetest.register_ore({
	ore_type       = "scatter",
	ore            = "mcl_core:lava_source",
	wherein         = stonelike,
	clust_scarcity = 72000,
	clust_num_ores = 1,
	clust_size     = 1,
	y_min          = mcl_worlds.layer_to_y(48),
	y_max          = mcl_worlds.layer_to_y(61),
})

-- Lava may even appear above surface, but this is very rare
minetest.register_ore({
	ore_type       = "scatter",
	ore            = "mcl_core:lava_source",
	wherein         = stonelike,
	clust_scarcity = 96000,
	clust_num_ores = 1,
	clust_size     = 1,
	y_min          = mcl_worlds.layer_to_y(62),
	y_max          = mcl_worlds.layer_to_y(127),
})
end