use table.copy instead of clone-node

init.lua

@@ -36,17 +36,6 @@ else
 end
 moretrees.intllib = S
 
--- clone node
-
-function moretrees.clone_node(name)
-	local node2 = {}
-	local node = minetest.registered_nodes[name]
-	for k,v in pairs(node) do
-		node2[k]=v
-	end
-	return node2
-end
-
 -- infinite stacks checking
 
 if minetest.get_modpath("unified_inventory") or not

node_defs.lua

@@ -404,7 +404,7 @@ default.register_leafdecay({
 
 
 if moretrees.enable_redefine_apple then
-	local appledef = moretrees.clone_node("default:apple")
+	local appledef = table.copy(minetest.registered_nodes["default:apple"])
 	appledef.groups.attached_node = 1
 	minetest.register_node(":default:apple", appledef)
 end

saplings.lua

@@ -10,16 +10,28 @@ local dirt_surfaces = {
 	["default:dirt_with_dry_grass"] = true,
 	["default:dirt_with_coniferous_litter"] = true,
 	["default:dirt_with_rainforest_litter"] = true,
-	["default:dirt_with_snow"] = true,
 	["woodsoils:dirt_with_leaves_1"] = true,
 	["woodsoils:dirt_with_leaves_2"] = true,
 	["woodsoils:grass_with_leaves_1"] = true,
 	["woodsoils:grass_with_leaves_2"] = true
 }
 
-local cold_surfaces = "default:dirt_with_snow"
+local conifer_surfaces =  {
+	set = true,
+	["default:dirt"] = true,
+	["default:dirt_with_grass"] = true,
+	["default:dirt_with_dry_grass"] = true,
+	["default:dirt_with_coniferous_litter"] = true,
+	["default:dirt_with_rainforest_litter"] = true,
+	["woodsoils:dirt_with_leaves_1"] = true,
+	["woodsoils:dirt_with_leaves_2"] = true,
+	["woodsoils:grass_with_leaves_1"] = true,
+	["woodsoils:grass_with_leaves_2"] = true,
+	["default:dirt_with_snow"] = true
+}
 
 local sand_surfaces = {
+	set = true,
 	["default:sand"] = true,
 	["default:desert_sand"] = true,
 	["cottages:loam"] = true,
@@ -38,7 +50,7 @@ for i in ipairs(moretrees.treelist) do
 	  or treename == "fir"
 	  or treename == "cedar"
 	  or treename == "pine" then
-		surfaces = cold_surfaces
+		surfaces = conifer_surfaces
 	elseif string.find(treename, "palm") then
 		surfaces = sand_surfaces
 	else
@@ -62,13 +74,11 @@ for i in ipairs(moretrees.treelist) do
 		grow_function = grow_function,
 	})
 
-	if moretrees.spawn_saplings then
 	biome_lib:grow_plants({
 		grow_delay = 2,
 		grow_chance = 1,
 		grow_plant = "moretrees:"..treename.."_sapling_ongen",
-			grow_nodes = moretrees[tree_biome].surface,
+		grow_nodes = surfaces,
 		grow_function = grow_function,
 	})
 end
-end