Introducing Tuff and Rhyolitic Tuff

Tuff and Rhyolitic Tuff are materials used in the Medival to build churches or houses of rich people.
Tuff, Tuff bricks and tuff ruble are now available in Darkage.

mapgen.lua

@@ -157,6 +157,10 @@ local function generate_claylike(data, varea, name, minp, maxp, seed, chance, mi
 	end
 end
 
+local mgparams = minetest.get_mapgen_params()
+local seed = mgparams.seed
+
+
 -- Generate desert stone with iron in derset.
 minetest.register_ore({
 	ore_type       = "scatter",
@@ -188,6 +192,44 @@ minetest.register_ore({
 	},
 })
 
+minetest.register_ore({
+	ore_type        	= "sheet",
+	ore             	= "darkage:tuff",
+	wherein         	= {"default:stone", "default:dirt", "default:gravel", "default:stone_with_coal"},
+	column_height_max = 20,
+	column_height_min = 15,
+	y_min            = -200,
+	y_max            = 200,
+	noise_threshold = 0.5,
+	noise_params     = {
+		offset = 0.35,
+		scale = 0.19,
+		seed = seed+12,
+		spread = {x = 45, y = 45, z = 45},
+		octaves = 1,
+		persistence = 0.6
+	},
+})
+
+minetest.register_ore({
+	ore_type        	= "sheet",
+	ore             	= "darkage:rhyolitic_tuff",
+	wherein         	= {"default:stone", "default:dirt", "default:gravel", "default:stone_with_coal"},
+	column_height_max = 20,
+	column_height_min = 15,
+	y_min            = -2000,
+	y_max            = 200,
+	noise_threshold = 0.53,
+	noise_params     = {
+		offset = 0.35,
+		scale = 0.2,
+		seed = seed+13,
+		spread = {x = 100, y = 100, z = 100},
+		octaves = 1,
+		persistence = 0.6
+	},
+})
+
 -- Generate strati
 local function generate_strati(minp, maxp, seed)