Generate sponges in v6

mods/MAPGEN/mcl_mapgen_core/depends.txt

@@ -4,6 +4,8 @@ biomeinfo
 mclx_core?
 mcl_worlds
 mcl_cocoas
+mcl_sponges
+mcl_ocean
 mcl_stairs
 mcl_monster_eggs
 mcl_structures

mods/MAPGEN/mcl_mapgen_core/init.lua

@@ -948,6 +948,28 @@ local function register_mgv6_decorations()
 
 	end
 
+	-- Wet Sponge
+	-- TODO: Remove this when we got ocean monuments
+	minetest.register_decoration({
+		deco_type = "simple",
+		decoration = "mcl_sponges:sponge_wet",
+		spawn_by = {"group:water"},
+		num_spawn_by = 1,
+		place_on = {"mcl_core:dirt","mcl_core:sand"},
+		sidelen = 16,
+		noise_params = {
+			offset = 0.00295,
+			scale = 0.006,
+			spread = {x = 250, y = 250, z = 250},
+			seed = 999,
+			octaves = 3,
+			persist = 0.666
+		},
+		flags = "force_placement",
+		y_min = mcl_vars.overworld_min,
+		y_max = -20,
+	})
+
 	-- Add a small amount of tall grass everywhere to avoid areas completely empty devoid of tall grass
 	minetest.register_decoration({
 		deco_type = "simple",