localize unecessary global functions

plantlife.lua

@@ -233,7 +233,7 @@ minetest.register_node("ethereal:crystalgrass", {
 })
 
 -- Define Moss Types (Has grass textures on all sides)
-function ethereal.add_moss(typ, descr, texture, receipe_item)
+local add_moss = function(typ, descr, texture, receipe_item)
 
 	minetest.register_node("ethereal:" .. typ .. "_moss", {
 		description = S(descr .. " Moss"),
@@ -250,11 +250,11 @@ function ethereal.add_moss(typ, descr, texture, receipe_item)
 	})
 end
 
-ethereal.add_moss( "crystal", "Crystal", "ethereal_grass_crystal_top.png", "ethereal:frost_leaves")
-ethereal.add_moss( "mushroom", "Mushroom", "ethereal_grass_mushroom_top.png", "ethereal:mushroom")
-ethereal.add_moss( "fiery", "Fiery", "ethereal_grass_fiery_top.png", "ethereal:dry_shrub")
-ethereal.add_moss( "gray", "Gray", "ethereal_grass_gray_top.png", "ethereal:snowygrass")
-ethereal.add_moss( "green", "Green", "default_grass.png", "default:jungleleaves")
+add_moss( "crystal", "Crystal", "ethereal_grass_crystal_top.png", "ethereal:frost_leaves")
+add_moss( "mushroom", "Mushroom", "ethereal_grass_mushroom_top.png", "ethereal:mushroom")
+add_moss( "fiery", "Fiery", "ethereal_grass_fiery_top.png", "ethereal:dry_shrub")
+add_moss( "gray", "Gray", "ethereal_grass_gray_top.png", "ethereal:snowygrass")
+add_moss( "green", "Green", "default_grass.png", "default:jungleleaves")
 
 -- Illuminated Cave Shrooms (Red, Green and Blue)
 minetest.register_node("ethereal:illumishroom", {
@@ -267,7 +267,7 @@ minetest.register_node("ethereal:illumishroom", {
 	light_source = 5,
 	sunlight_propagates = true,
 	walkable = false,
-	groups = {dig_immediate = 3, attached_node = 1,flammable = 3},
+	groups = {dig_immediate = 3, attached_node = 1, flammable = 3},
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
 		type = "fixed",
@@ -285,7 +285,7 @@ minetest.register_node("ethereal:illumishroom2", {
 	light_source = 5,
 	sunlight_propagates = true,
 	walkable = false,
-	groups = {dig_immediate = 3, attached_node = 1,flammable = 3},
+	groups = {dig_immediate = 3, attached_node = 1, flammable = 3},
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
 		type = "fixed",
@@ -303,7 +303,7 @@ minetest.register_node("ethereal:illumishroom3", {
 	light_source = 5,
 	sunlight_propagates = true,
 	walkable = false,
-	groups = {dig_immediate = 3, attached_node = 1,flammable = 3},
+	groups = {dig_immediate = 3, attached_node = 1, flammable = 3},
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {
 		type = "fixed",

sapling.lua

@@ -25,7 +25,7 @@ minetest.register_node("ethereal:bamboo_sprout", {
 })
 
 -- Register Saplings
-ethereal.register_sapling = function(name, desc, texture, height)
+local register_sapling = function(name, desc, texture, height)
 
 	minetest.register_node(name .. "_sapling", {
 		description = S(desc .. " Tree Sapling"),
@@ -50,18 +50,18 @@ ethereal.register_sapling = function(name, desc, texture, height)
 	})
 end
 
-ethereal.register_sapling("ethereal:willow", "Willow", "willow_sapling", 14)
-ethereal.register_sapling("ethereal:yellow_tree", "Healing", "yellow_tree_sapling", 19)
-ethereal.register_sapling("ethereal:big_tree", "Big", "ethereal_big_tree_sapling", 7)
-ethereal.register_sapling("ethereal:banana_tree", "Banana", "banana_tree_sapling", 8)
-ethereal.register_sapling("ethereal:frost_tree", "Frost", "ethereal_frost_tree_sapling", 19)
-ethereal.register_sapling("ethereal:mushroom", "Mushroom", "ethereal_mushroom_sapling", 11)
-ethereal.register_sapling("ethereal:palm", "Palm", "moretrees_palm_sapling", 9)
-ethereal.register_sapling("ethereal:redwood", "Redwood", "redwood_sapling", 31)
-ethereal.register_sapling("ethereal:orange_tree", "Orange", "orange_tree_sapling", 6)
-ethereal.register_sapling("ethereal:birch", "Birch", "moretrees_birch_sapling", 7)
+register_sapling("ethereal:willow", "Willow", "willow_sapling", 14)
+register_sapling("ethereal:yellow_tree", "Healing", "yellow_tree_sapling", 19)
+register_sapling("ethereal:big_tree", "Big", "ethereal_big_tree_sapling", 7)
+register_sapling("ethereal:banana_tree", "Banana", "banana_tree_sapling", 8)
+register_sapling("ethereal:frost_tree", "Frost", "ethereal_frost_tree_sapling", 19)
+register_sapling("ethereal:mushroom", "Mushroom", "ethereal_mushroom_sapling", 11)
+register_sapling("ethereal:palm", "Palm", "moretrees_palm_sapling", 9)
+register_sapling("ethereal:redwood", "Redwood", "redwood_sapling", 31)
+register_sapling("ethereal:orange_tree", "Orange", "orange_tree_sapling", 6)
+register_sapling("ethereal:birch", "Birch", "moretrees_birch_sapling", 7)
 
-ethereal.add_tree = function (pos, ofx, ofy, ofz, schem)
+local add_tree = function (pos, ofx, ofy, ofz, schem)
 	-- check for schematic
 	if not schem then
 		print (S("Schematic not found"))
@@ -74,55 +74,55 @@ ethereal.add_tree = function (pos, ofx, ofy, ofz, schem)
 		schem, 0, nil, false)
 end
 
-local path = minetest.get_modpath("ethereal").."/schematics/"
+local path = minetest.get_modpath("ethereal") .. "/schematics/"
 
 -- grow tree functions
 function ethereal.grow_yellow_tree(pos)
-	ethereal.add_tree(pos, 4, 0, 4, ethereal.yellowtree)
+	add_tree(pos, 4, 0, 4, ethereal.yellowtree)
 end
 
 function ethereal.grow_big_tree(pos)
-	ethereal.add_tree(pos, 4, 0, 4, ethereal.bigtree)
+	add_tree(pos, 4, 0, 4, ethereal.bigtree)
 end
 
 function ethereal.grow_banana_tree(pos)
-	ethereal.add_tree(pos, 3, 0, 3, ethereal.bananatree)
+	add_tree(pos, 3, 0, 3, ethereal.bananatree)
 end
 
 function ethereal.grow_frost_tree(pos)
-	ethereal.add_tree(pos, 4, 0, 4, ethereal.frosttrees)
+	add_tree(pos, 4, 0, 4, ethereal.frosttrees)
 end
 
 function ethereal.grow_mushroom_tree(pos)
-	ethereal.add_tree(pos, 4, 0, 4, ethereal.mushroomone)
+	add_tree(pos, 4, 0, 4, ethereal.mushroomone)
 end
 
 function ethereal.grow_palm_tree(pos)
-	ethereal.add_tree(pos, 4, 0, 4, ethereal.palmtree)
+	add_tree(pos, 4, 0, 4, ethereal.palmtree)
 end
 
 function ethereal.grow_willow_tree(pos)
-	ethereal.add_tree(pos, 5, 0, 5, ethereal.willow)
+	add_tree(pos, 5, 0, 5, ethereal.willow)
 end
 
 function ethereal.grow_redwood_tree(pos)
-	ethereal.add_tree(pos, 7, 0, 7, ethereal.redwood_tree)
+	add_tree(pos, 7, 0, 7, ethereal.redwood_tree)
 end
 
 function ethereal.grow_orange_tree(pos)
-	ethereal.add_tree(pos, 1, 0, 1, ethereal.orangetree)
+	add_tree(pos, 1, 0, 1, ethereal.orangetree)
 end
 
 function ethereal.grow_bamboo_tree(pos)
-	ethereal.add_tree(pos, 1, 0, 1, ethereal.bambootree)
+	add_tree(pos, 1, 0, 1, ethereal.bambootree)
 end
 
 function ethereal.grow_birch_tree(pos)
-	ethereal.add_tree(pos, 2, 0, 2, ethereal.birchtree)
+	add_tree(pos, 2, 0, 2, ethereal.birchtree)
 end
 
 -- check if sapling has enough height room to grow
-local function enough_height(pos, height)
+local enough_height = function(pos, height)
 
 	local nod = minetest.line_of_sight(
 		{x = pos.x, y = pos.y + 1, z = pos.z},
@@ -135,7 +135,7 @@ local function enough_height(pos, height)
 	end
 end
 
-ethereal.grow_sapling = function (pos, node)
+local grow_sapling = function(pos, node)
 
 	local under =  minetest.get_node({
 		x = pos.x,
@@ -211,12 +211,12 @@ minetest.register_abm({
 	catch_up = false,
 	action = function(pos, node)
 
-		local light_level = minetest.get_node_light(pos)
+		local light_level = minetest.get_node_light(pos) or 0
 
-		if not light_level or light_level < 13 then
+		if light_level < 13 then
 			return
 		end
 
-		ethereal.grow_sapling(pos, node)
+		grow_sapling(pos, node)
 	end,
 })

strawberry.lua

@@ -28,7 +28,7 @@ local crop_def = {
 		fixed = {-0.5, -0.5, -0.5, 0.5, -5/16, 0.5}
 	},
 	groups = {
-		snappy = 3, flammable  =2, plant = 1, attached_node = 1,
+		snappy = 3, flammable = 2, plant = 1, attached_node = 1,
 		not_in_creative_inventory = 1, growing = 1
 	},
 	sounds = default.node_sound_leaves_defaults(),