Add setting for optional traditional ore spawning

mods/MAPGEN/mcl_mapgen_core/init.lua

@@ -404,6 +404,22 @@ if minetest.settings:get_bool("mcl_generate_ores", true) then
 		y_max          = mcl_worlds.layer_to_y(15),
 	})
 
+	--
+	-- Netherite
+	-- (default netherite spawning in mcl_secret_ores)
+	if minetest.settings:get_bool("mcl_traditional_ancient_debris_ore",false) then
+		minetest.register_ore({
+			ore_type       = "scatter",
+			ore            = "mcl_nether:ancient_debris",
+			wherein        = {"mcl_nether:netherrack","mcl_nether:soul_sand","mcl_blackstone:blackstone","mcl_blackstone:basalt"},
+			clust_scarcity = 50000,
+			clust_num_ores = 4,
+			clust_size     = 3,
+			y_min = mcl_vars.mg_nether_min,
+			y_max = mcl_vars.mg_lava_nether_max,
+		})
+	end
+
 	--
 	-- Redstone
 	--

mods/MAPGEN/mcl_secret_ores/init.lua

@@ -0,0 +1,85 @@
+mcl_secret_ores = {}
+mcl_secret_ores.registered_ores = {}
+
+local trad_ore = minetest.settings:get_bool("mcl_traditional_ancient_debris_ore",false)
+local noise_params = {
+		offset = 0.27,
+		scale = 1,
+		spread = {x = 523, y = 123, z = 542 },
+		seed = 252342,
+		octaves = 1,
+		persist = 0,
+		flags = "absvalue",
+	}
+
+local adjacents = {
+	{ x =-1, y = 0, z = 0},
+	{ x = 1, y = 0, z = 0},
+	{ x = 0, y =-1, z = 0},
+	{ x = 0, y = 1, z = 0},
+	{ x = 0, y = 0, z =-1},
+	{ x = 0, y = 0, z = 1}
+}
+local seed = minetest.get_mapgen_setting("seed")
+
+local function is_occluded(pos,dp)
+	for k,v in pairs(adjacents) do
+		local np=vector.add(pos,v)
+		local n = minetest.get_node(np)
+		if  not vector.equals(np,dp) and n.name=="air" then return false end
+	end
+	return true
+end
+
+function mcl_secret_ores.on_dig(pos, oldnode,def)
+	if (def.y_min and pos.y < def.y_min) or ( def.y_max and pos.y > def.y_max ) then return end
+	for k,v in pairs(adjacents) do
+		local p=vector.add(pos,v)
+		local n=minetest.get_node_or_nil(p)
+		if n and table.indexof(def.wherein,n.name) and n.param2 == 0 and is_occluded(p,pos) and def.randomfunc(p,def) then
+			if def.clust_num_ores then --enforce local limit
+				local oo = minetest.find_nodes_in_area(vector.offset(p,-15,-15,-15),vector.offset(p,15,15,15),{def.ore})
+				if oo and #oo > def.clust_num_ores then return end
+			end
+			minetest.set_node(p,{name=def.ore})
+			return
+		end
+	end
+end
+
+function mcl_secret_ores.register_ore(def)
+	if not def.randomfunc then
+		def.randomfunc = function(p) return math.random(100) == 1 end
+	end
+	table.insert(mcl_secret_ores.registered_ores,def)
+end
+minetest.register_on_mods_loaded(function()
+	for _,def in pairs(mcl_secret_ores.registered_ores) do
+		for _,n in pairs(def.wherein) do
+			local node = minetest.registered_nodes[n]
+			local old_on_dig = node.on_dig
+			minetest.override_item(n, {on_dig = function(pos,oldnode,digger)
+				mcl_secret_ores.on_dig(pos, oldnode,def)
+				return old_on_dig(pos,oldnode,digger)
+			end,
+			place_param2 = 1
+			})
+		end
+	end
+end)
+
+if not trad_ore then
+	mcl_secret_ores.register_ore({
+		ore_type       = "scatter",
+		ore            = "mcl_nether:ancient_debris",
+		wherein        = {"mcl_nether:netherrack","mcl_nether:soul_sand","mcl_blackstone:blackstone","mcl_blackstone:basalt"},
+		clust_num_ores = 8,
+		y_min = mcl_vars.mg_nether_min,
+		y_max = mcl_vars.mg_lava_nether_max,
+		randomfunc = function(p,def)
+			local noise = minetest.get_perlin(noise_params)
+			local n = noise:get_3d(p)
+			if n > 1 then return true end
+		end
+	})
+end

mods/MAPGEN/mcl_secret_ores/mod.conf

@@ -0,0 +1,3 @@
+name = mcl_secret_ores
+author = cora
+depends = mcl_init

settingtypes.txt

@@ -39,6 +39,9 @@ mcl_doTileDrops (Blocks have drops) bool true
 # If enabled, TNT explosions destroy blocks.
 mcl_tnt_griefing (TNT destroys blocks) bool true
 
+# If enabled Ancient debris will spawn like other ores. Cheaters will be abel to see it. Off by default.
+mcl_traditional_ancient_debris_ore (spawn ancient debris as traditional [xrayable] ore) bool false
+
 [Players]
 # If enabled, players respawn at the bed they last lay on instead of normal
 # spawn.