Add large oak trees

mods/ITEMS/mcl_core/functions.lua

@@ -330,13 +330,31 @@ end
 function mcl_core.generate_oak_tree(pos)
 	local r = math.random(1, 12)
 	local path
+	local offset
+	-- Balloon oak
 	if r == 1 then
-		path = minetest.get_modpath("mcl_core") .. "/schematics/mcl_core_oak_balloon_small.mts"
+		local s = math.random(1, 12)
+		if s == 1 then
+			-- Small balloon oak
+			path = minetest.get_modpath("mcl_core") .. "/schematics/mcl_core_oak_balloon.mts"
+			offset = { x = -2, y = -1, z = -2 }
+		else
+			-- Large balloon oak
+			local t = math.random(1, 2)
+			path = minetest.get_modpath("mcl_core") .. "/schematics/mcl_core_oak_large_"..t..".mts"
+			if t == 1 then
+				offset = { x = -3, y = -1, z = -3 }
+			elseif t == 2 then
+				offset = { x = -4, y = -1, z = -4 }
+			end
+		end
+	-- Classic oak
 	else
 		path = minetest.get_modpath("mcl_core") .. "/schematics/mcl_core_oak_classic.mts"
+		offset = { x = -2, y = -1, z = -2 }
 
 	end
-	minetest.place_schematic({x = pos.x - 2, y = pos.y - 1 , z = pos.z - 2}, path, "random", nil, false)
+	minetest.place_schematic(vector.add(pos, offset), path, "random", nil, false)
 end
 
 -- Birch

mods/MAPGEN/mcl_biomes/init.lua

@@ -1040,6 +1040,44 @@ local function register_decorations()
 	})
 
 	-- Oak
+	minetest.register_decoration({
+		deco_type = "schematic",
+		place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
+		sidelen = 80,
+		noise_params = {
+			offset = 0.00075,
+			scale = 0.0011,
+			spread = {x = 250, y = 250, z = 250},
+			seed = 3,
+			octaves = 3,
+			persist = 0.66
+		},
+		biomes = {"deciduous_forest"},
+		y_min = 1,
+		y_max = mcl_vars.mg_overworld_max,
+		schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_large_1.mts",
+		flags = "place_center_x, place_center_z",
+		rotation = "random",
+	})
+	minetest.register_decoration({
+		deco_type = "schematic",
+		place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
+		sidelen = 80,
+		noise_params = {
+			offset = 0.00075,
+			scale = 0.0011,
+			spread = {x = 250, y = 250, z = 250},
+			seed = 3,
+			octaves = 3,
+			persist = 0.66
+		},
+		biomes = {"deciduous_forest"},
+		y_min = 1,
+		y_max = mcl_vars.mg_overworld_max,
+		schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_large_2.mts",
+		flags = "place_center_x, place_center_z",
+		rotation = "random",
+	})
 	minetest.register_decoration({
 		deco_type = "schematic",
 		place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},