Add mcl_secret_ores for x-ray safe netherite

mods/MAPGEN/mcl_secret_ores/init.lua

@@ -0,0 +1,63 @@
+mcl_secret_ores = {}
+mcl_secret_ores.registered_ores = {}
+
+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)
+	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) then
+			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)
+				old_on_dig(pos,oldnode,digger)
+			end,
+			place_param2 = 1
+			})
+		end
+	end
+end)
+
+mcl_secret_ores.register_ore({
+	wherein = {"mcl_nether:netherrack"},
+	ore = "mcl_nether:ancient_debris",
+	randomfunc = function(p)
+		p = vector.round(p)
+		local pr = PseudoRandom(p.x*p.y*p.z)
+		if pr:next(1,1000) == 1 then return true end
+	end,
+})

mods/MAPGEN/mcl_secret_ores/mod.conf

@@ -0,0 +1,2 @@
+name = mcl_secret_ores
+author = cora