Generate mushrooms in the Overworld

mods/MAPGEN/mcl_mapgen_core/init.lua

@@ -672,6 +672,30 @@ local function register_mgv6_decorations()
 		decoration = "mcl_flowers:tallgrass",
 	})
 
+	local mushrooms = {"mcl_mushrooms:mushroom_red", "mcl_mushrooms:mushroom_brown"}
+	local mseeds = { 7133, 8244 }
+	for m=1, #mushrooms do
+		-- Mushrooms next to trees
+		minetest.register_decoration({
+			deco_type = "simple",
+			place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt", "mcl_core:stone", "mcl_core:andesite", "mcl_core:diorite", "mcl_core:granite"},
+			sidelen = 16,
+			noise_params = {
+				offset = 0,
+				scale = 0.04,
+				spread = {x = 100, y = 100, z = 100},
+				seed = mseeds[m],
+				octaves = 3,
+				persist = 0.6
+			},
+			y_min = 1,
+			y_max = 128,
+			decoration = mushrooms[m],
+			spawn_by = { "mcl_core:tree", "mcl_core:sprucetree", "mcl_core:darktree", "mcl_core:birchtree", "mcl_core:jungletree", "mcl_core:acaciatree" },
+			num_spawn_by = 1,
+		})
+	end
+
 	-- Dead bushes
 
 	minetest.register_decoration({