fix many codestyle issues (functions, strings, modpaths)

mods/CORE/_mcl_autogroup/init.lua

@@ -83,7 +83,7 @@ local function get_hardness_values_for_groups()
 
 	for _, ndef in pairs(minetest.registered_nodes) do
 		for g, _ in pairs(mcl_autogroup.registered_diggroups) do
-			if ndef.groups[g] ~= nil then
+			if ndef.groups[g] then
 				maps[g][ndef._mcl_hardness or 0] = true
 			end
 		end

mods/CORE/controls/init.lua

@@ -1,6 +1,8 @@
 local get_connected_players = minetest.get_connected_players
 local clock = os.clock
 
+local pairs = pairs
+
 controls = {}
 controls.players = {}
 
@@ -20,15 +22,15 @@ function controls.register_on_hold(func)
 end
 
 local known_controls = {
-	jump=true,
-	right=true,
-	left=true,
-	LMB=true,
-	RMB=true,
-	sneak=true,
-	aux1=true,
-	down=true,
-	up=true,
+	jump = true,
+	right = true,
+	left = true,
+	LMB = true,
+	RMB = true,
+	sneak = true,
+	aux1 = true,
+	down = true,
+	up = true,
 }
 
 minetest.register_on_joinplayer(function(player)
@@ -49,27 +51,27 @@ minetest.register_globalstep(function(dtime)
 		local player_name = player:get_player_name()
 		local player_controls = player:get_player_control()
 		if controls.players[player_name] then
-		for cname, cbool in pairs(player_controls) do
-		if known_controls[cname] == true then
-			--Press a key
-			if cbool==true and controls.players[player_name][cname][1]==false then
-				for _, func in pairs(controls.registered_on_press) do
-					func(player, cname)
+			for cname, cbool in pairs(player_controls) do
+				if known_controls[cname] == true then
+					--Press a key
+					if cbool == true and controls.players[player_name][cname][1] == false then
+						for _, func in pairs(controls.registered_on_press) do
+							func(player, cname)
+						end
+						controls.players[player_name][cname] = {true, clock()}
+					elseif cbool == true and controls.players[player_name][cname][1] == true then
+						for _, func in pairs(controls.registered_on_hold) do
+							func(player, cname, clock()-controls.players[player_name][cname][2])
+						end
+					--Release a key
+					elseif cbool == false and controls.players[player_name][cname][1] == true then
+						for _, func in pairs(controls.registered_on_release) do
+							func(player, cname, clock()-controls.players[player_name][cname][2])
+						end
+						controls.players[player_name][cname] = {false}
+					end
 				end
-				controls.players[player_name][cname] = {true, clock()}
-			elseif cbool==true and controls.players[player_name][cname][1]==true then
-				for _, func in pairs(controls.registered_on_hold) do
-					func(player, cname, clock()-controls.players[player_name][cname][2])
-				end
-			--Release a key
-			elseif cbool==false and controls.players[player_name][cname][1]==true then
-				for _, func in pairs(controls.registered_on_release) do
-					func(player, cname, clock()-controls.players[player_name][cname][2])
-				end
-				controls.players[player_name][cname] = {false}
 			end
 		end
-		end
-		end
 	end
 end)

mods/CORE/mcl_explosions/init.lua

@@ -12,9 +12,13 @@ under the LGPLv2.1 license.
 
 mcl_explosions = {}
 
-local mod_fire = minetest.get_modpath("mcl_fire") ~= nil
+local mod_fire = minetest.get_modpath("mcl_fire")
 --local CONTENT_FIRE = minetest.get_content_id("mcl_fire:fire")
 
+local math = math
+local vector = vector
+local table = table
+
 local hash_node_position = minetest.hash_node_position
 local get_objects_inside_radius = minetest.get_objects_inside_radius
 local get_position_from_hash = minetest.get_position_from_hash
@@ -24,6 +28,7 @@ local get_voxel_manip = minetest.get_voxel_manip
 local bulk_set_node = minetest.bulk_set_node
 local check_for_falling = minetest.check_for_falling
 local add_item = minetest.add_item
+local pos_to_string = minetest.pos_to_string
 
 -- Saved sphere explosion shapes for various radiuses
 local sphere_shapes = {}
@@ -240,7 +245,7 @@ local function trace_explode(pos, strength, raydirs, radius, info, direct, sourc
 		local ent = obj:get_luaentity()
 
 		-- Ignore items to lower lag
-		if (obj:is_player() or (ent and ent.name ~= '__builtin.item')) and obj:get_hp() > 0 then
+		if (obj:is_player() or (ent and ent.name ~= "__builtin.item")) and obj:get_hp() > 0 then
 			local opos = obj:get_pos()
 			local collisionbox = nil
 
@@ -356,9 +361,9 @@ local function trace_explode(pos, strength, raydirs, radius, info, direct, sourc
 		local on_blast = node_on_blast[data[idx]]
 		local remove = true
 
-		if do_drop or on_blast ~= nil then
+		if do_drop or on_blast then
 			local npos = get_position_from_hash(hash)
-			if on_blast ~= nil then
+			if on_blast then
 				on_blast(npos, 1.0, do_drop)
 				remove = false
 			else
@@ -400,8 +405,7 @@ local function trace_explode(pos, strength, raydirs, radius, info, direct, sourc
 	end
 
 	-- Log explosion
-	minetest.log('action', 'Explosion at ' .. minetest.pos_to_string(pos) ..
-		' with strength ' .. strength .. ' and radius ' .. radius)
+	minetest.log("action", "Explosion at "..pos_to_string(pos).." with strength "..strength.." and radius "..radius)
 end
 
 -- Create an explosion with strength at pos.

mods/CORE/mcl_worlds/init.lua

@@ -1,5 +1,7 @@
 mcl_worlds = {}
 
+local get_connected_players = minetest.get_connected_players
+
 -- For a given position, returns a 2-tuple:
 -- 1st return value: true if pos is in void
 -- 2nd return value: true if it is in the deadly part of the void
@@ -44,12 +46,16 @@ function mcl_worlds.y_to_layer(y)
 	end
 end
 
+local y_to_layer = mcl_worlds.y_to_layer
+
 -- Takes a pos and returns the dimension it belongs to (same as above)
 function mcl_worlds.pos_to_dimension(pos)
-	local _, dim = mcl_worlds.y_to_layer(pos.y)
+	local _, dim = y_to_layer(pos.y)
 	return dim
 end
 
+local pos_to_dimension = mcl_worlds.pos_to_dimension
+
 -- Takes a Minecraft layer and a “dimension” name
 -- and returns the corresponding Y coordinate for
 -- MineClone 2.
@@ -119,6 +125,8 @@ function mcl_worlds.dimension_change(player, dimension)
 	last_dimension[playername] = dimension
 end
 
+local dimension_change = mcl_worlds.dimension_change
+
 ----------------------- INTERNAL STUFF ----------------------
 
 -- Update the dimension callbacks every DIM_UPDATE seconds
@@ -126,19 +134,19 @@ local DIM_UPDATE = 1
 local dimtimer = 0
 
 minetest.register_on_joinplayer(function(player)
-	last_dimension[player:get_player_name()] = mcl_worlds.pos_to_dimension(player:get_pos())
+	last_dimension[player:get_player_name()] = pos_to_dimension(player:get_pos())
 end)
 
 minetest.register_globalstep(function(dtime)
 	-- regular updates based on iterval
 	dimtimer = dimtimer + dtime;
 	if dimtimer >= DIM_UPDATE then
-		local players = minetest.get_connected_players()
-		for p=1, #players do
-			local dim = mcl_worlds.pos_to_dimension(players[p]:get_pos())
+		local players = get_connected_players()
+		for p = 1, #players do
+			local dim = pos_to_dimension(players[p]:get_pos())
 			local name = players[p]:get_player_name()
 			if dim ~= last_dimension[name] then
-				mcl_worlds.dimension_change(players[p], dim)
+				dimension_change(players[p], dim)
 			end
 		end
 		dimtimer = 0

mods/CORE/walkover/init.lua

@@ -4,6 +4,7 @@ local get_connected_players = minetest.get_connected_players
 local get_node = minetest.get_node
 local vector_add = vector.add
 local ceil = math.ceil
+local pairs = pairs
 
 walkover = {}
 walkover.registered_globals = {}
@@ -34,9 +35,9 @@ minetest.register_globalstep(function(dtime)
 		local pp = player:get_pos()
 		pp.y = ceil(pp.y)
 			local loc = vector_add(pp, {x=0,y=-1,z=0})
-			if loc ~= nil then
+			if loc then
 				local nodeiamon = get_node(loc)
-				if nodeiamon ~= nil then
+				if nodeiamon then
 					if on_walk[nodeiamon.name] then
 						on_walk[nodeiamon.name](loc, nodeiamon, player)
 					end

mods/ENTITIES/mcl_boats/init.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_boats")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 local boat_visual_size = {x = 1, y = 1, z = 1}
 local paddling_speed = 22
@@ -470,6 +470,6 @@ minetest.register_craft({
 	burntime = 20,
 })
 
-if minetest.get_modpath("doc_identifier") ~= nil then
+if minetest.get_modpath("doc_identifier") then
 	doc.sub.identifier.register_object("mcl_boats:boat", "craftitems", "mcl_boats:boat")
 end

mods/ENTITIES/mcl_burning/init.lua

@@ -1,5 +1,10 @@
 local modpath = minetest.get_modpath(minetest.get_current_modname())
 
+local pairs = pairs
+
+local get_connected_players = minetest.get_connected_players
+local get_item_group = minetest.get_item_group
+
 mcl_burning = {
 	storage = {},
 	animation_frames = tonumber(minetest.settings:get("fire_animation_frames")) or 8
@@ -8,7 +13,7 @@ mcl_burning = {
 dofile(modpath .. "/api.lua")
 
 minetest.register_globalstep(function(dtime)
-	for _, player in pairs(minetest.get_connected_players()) do
+	for _, player in pairs(get_connected_players()) do
 		local storage = mcl_burning.storage[player]
 		if not mcl_burning.tick(player, dtime, storage) and not mcl_burning.is_affected_by_rain(player) then
 			local nodes = mcl_burning.get_touching_nodes(player, {"group:puts_out_fire", "group:set_on_fire"}, storage)
@@ -16,12 +21,12 @@ minetest.register_globalstep(function(dtime)
 
 			for _, pos in pairs(nodes) do
 				local node = minetest.get_node(pos)
-				if minetest.get_item_group(node.name, "puts_out_fire") > 0 then
+				if get_item_group(node.name, "puts_out_fire") > 0 then
 					burn_time = 0
 					break
 				end
 
-				local value = minetest.get_item_group(node.name, "set_on_fire")
+				local value = get_item_group(node.name, "set_on_fire")
 				if value > burn_time then
 					burn_time = value
 				end

mods/ENTITIES/mcl_item_entity/init.lua

@@ -1,5 +1,5 @@
 --these are lua locals, used for higher performance
-local minetest, math, vector, ipairs = minetest, math, vector, ipairs
+local minetest, math, vector, ipairs, pairs = minetest, math, vector, ipairs, pairs
 
 --this is used for the player pool in the sound buffer
 local pool = {}
@@ -233,7 +233,7 @@ function minetest.handle_node_drops(pos, drops, digger)
 	local dug_node = minetest.get_node(pos)
 	local tooldef
 	local tool
-	if digger ~= nil then
+	if digger then
 		tool = digger:get_wielded_item()
 		tooldef = minetest.registered_tools[tool:get_name()]
 
@@ -314,7 +314,7 @@ function minetest.handle_node_drops(pos, drops, digger)
 			end
 			-- Spawn item and apply random speed
 			local obj = minetest.add_item(dpos, drop_item)
-			if obj ~= nil then
+			if obj then
 				local x = math.random(1, 5)
 				if math.random(1,2) == 1 then
 					x = -x
@@ -394,7 +394,7 @@ minetest.register_entity(":__builtin:item", {
 	-- The itemstring MUST be set immediately to a non-empty string after creating the entity.
 	-- The hand is NOT permitted as dropped item. ;-)
 	-- Item entities will be deleted if they still have an empty itemstring on their first on_step tick.
-	itemstring = '',
+	itemstring = "",
 
 	-- If true, item will fall
 	physical_state = true,
@@ -585,7 +585,7 @@ minetest.register_entity(":__builtin:item", {
 			return
 		end
 		self.age = self.age + dtime
-		if self._collector_timer ~= nil then
+		if self._collector_timer then
 			self._collector_timer = self._collector_timer + dtime
 		end
 		if time_to_live > 0 and self.age > time_to_live then

mods/ENTITIES/mcl_minecarts/init.lua

@@ -1,9 +1,10 @@
-local S = minetest.get_translator("mcl_minecarts")
+local modname = minetest.get_current_modname()
+local S = minetest.get_translator(modname)
 
 local has_mcl_wip = minetest.get_modpath("mcl_wip")
 
 mcl_minecarts = {}
-mcl_minecarts.modpath = minetest.get_modpath("mcl_minecarts")
+mcl_minecarts.modpath = minetest.get_modpath(modname)
 mcl_minecarts.speed_max = 10
 mcl_minecarts.check_float_time = 15
 
@@ -204,7 +205,7 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
 			rou_pos = vector.round(pos)
 			node = minetest.get_node(rou_pos)
 			local g = minetest.get_item_group(node.name, "connect_to_raillike")
-			if g ~= self._railtype and self._railtype ~= nil then
+			if g ~= self._railtype and self._railtype then
 				-- Detach driver
 				if player then
 					if self._old_pos then
@@ -523,7 +524,7 @@ function mcl_minecarts.place_minecart(itemstack, pointed_thing, placer)
 	local cart = minetest.add_entity(railpos, entity_id)
 	local railtype = minetest.get_item_group(node.name, "connect_to_raillike")
 	local le = cart:get_luaentity()
-	if le ~= nil then
+	if le then
 		le._railtype = railtype
 	end
 	local cart_dir = mcl_minecarts:get_rail_direction(railpos, {x=1, y=0, z=0}, nil, nil, railtype)
@@ -606,7 +607,7 @@ Register a minecart
 local function register_minecart(itemstring, entity_id, description, tt_help, longdesc, usagehelp, mesh, textures, icon, drop, on_rightclick, on_activate_by_rail, creative)
 	register_entity(entity_id, mesh, textures, drop, on_rightclick, on_activate_by_rail)
 	register_craftitem(itemstring, entity_id, description, tt_help, longdesc, usagehelp, icon, creative)
-	if minetest.get_modpath("doc_identifier") ~= nil then
+	if minetest.get_modpath("doc_identifier") then
 		doc.sub.identifier.register_object(entity_id, "craftitems", itemstring)
 	end
 end

mods/ENTITIES/mcl_minecarts/rails.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_minecarts")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- Template rail function
 local function register_rail(itemstring, tiles, def_extras, creative)
@@ -206,11 +206,11 @@ register_rail("mcl_minecarts:detector_rail_on",
 
 -- Crafting
 minetest.register_craft({
-	output = 'mcl_minecarts:rail 16',
+	output = "mcl_minecarts:rail 16",
 	recipe = {
-		{'mcl_core:iron_ingot', '', 'mcl_core:iron_ingot'},
-		{'mcl_core:iron_ingot', 'mcl_core:stick', 'mcl_core:iron_ingot'},
-		{'mcl_core:iron_ingot', '', 'mcl_core:iron_ingot'},
+		{"mcl_core:iron_ingot", "", "mcl_core:iron_ingot"},
+		{"mcl_core:iron_ingot", "mcl_core:stick", "mcl_core:iron_ingot"},
+		{"mcl_core:iron_ingot", "", "mcl_core:iron_ingot"},
 	}
 })
 

mods/ENTITIES/mcl_mobs/api/api.lua

@@ -96,7 +96,7 @@ local mod_mobspawners = minetest_get_modpath("mcl_mobspawners")
 --local height_switcher = false
 
 -- Get translator
-local S = minetest.get_translator("mcl_mobs")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- CMI support check
 --local use_cmi = minetest.global_exists("cmi")
@@ -429,7 +429,7 @@ function mobs:register_mob(name, def)
 		--harmed_by_heal = def.harmed_by_heal,
 	})
 
-	if minetest_get_modpath("doc_identifier") ~= nil then
+	if minetest_get_modpath("doc_identifier") then
 		doc.sub.identifier.register_object(name, "basics", "mobs")
 	end
 

mods/ENTITIES/mcl_mobs/api/mob_functions/ai.lua

@@ -990,7 +990,7 @@ function mobs.mob_step(self, dtime)
 			if self.memory <= 0 then
 
 				--reset states when coming out of hostile state
-				if self.attacking ~= nil then
+				if self.attacking then
 					self.state_timer = -1
 				end
 

mods/ENTITIES/mcl_mobs/api/mob_functions/attack_type_instructions.lua

@@ -41,7 +41,7 @@ mobs.explode_attack_walk = function(self,dtime)
     --make mob walk up to player within 2 nodes distance then start exploding
     if distance_from_attacking >= self.reach and
     --don't allow explosion to cancel unless out of the reach boundary
-    not (self.explosion_animation ~= nil and self.explosion_animation > 0 and distance_from_attacking <= self.defuse_reach) then
+    not (self.explosion_animation and self.explosion_animation > 0 and distance_from_attacking <= self.defuse_reach) then
 
         mobs.set_velocity(self, self.run_velocity)
         mobs.set_mob_animation(self,"run")
@@ -85,9 +85,8 @@ end
 
 --this is a small helper function to make working with explosion animations easier
 mobs.reverse_explosion_animation = function(self,dtime)
-
     --if explosion animation was greater than 0 then reverse it
-    if self.explosion_animation ~= nil and self.explosion_animation > 0 then
+    if self.explosion_animation and self.explosion_animation > 0 then
         self.explosion_animation = self.explosion_animation - dtime
         if self.explosion_animation < 0 then
             self.explosion_animation = 0

mods/ENTITIES/mcl_mobs/api/mob_functions/projectile_handling.lua

@@ -36,9 +36,8 @@ mobs.shoot_projectile_handling = function(arrow_item, pos, dir, yaw, shooter, po
 	le._collectable = collectable
 
     --play custom shoot sound
-    if shooter ~= nil and shooter.shoot_sound then
+    if shooter and shooter.shoot_sound then
         minetest.sound_play(shooter.shoot_sound, {pos=pos, max_hear_distance=16}, true)
     end
-
 	return obj
 end

mods/ENTITIES/mcl_mobs/api/spawning.lua

@@ -5,6 +5,7 @@ local get_node_light               = minetest.get_node_light
 local find_nodes_in_area_under_air = minetest.find_nodes_in_area_under_air
 local get_biome_name               = minetest.get_biome_name
 local get_objects_inside_radius    = minetest.get_objects_inside_radius
+local get_connected_players        = minetest.get_connected_players
 
 
 local math_random    = math.random
@@ -18,6 +19,7 @@ local vector_floor    = vector.floor
 local table_copy     = table.copy
 local table_remove   = table.remove
 
+local pairs = pairs
 
 -- range for mob count
 local aoc_range = 48
@@ -279,7 +281,7 @@ function mobs:spawn_specific(name, dimension, type_of_spawning, biomes, min_ligh
 			end
 
 			-- if toggle set to nil then ignore day/night check
-			if day_toggle ~= nil then
+			if day_toggle then
 
 				local tod = (minetest.get_timeofday() or 0) * 24000
 
@@ -369,7 +371,7 @@ function mobs:spawn_specific(name, dimension, type_of_spawning, biomes, min_ligh
 						if minetest.registered_nodes[node_ok(pos2).name].walkable == true then
 							-- inside block
 							minetest.log("info", "Mob spawn of "..name.." at "..minetest.pos_to_string(pos).." failed, too little space!")
-							if ent.spawn_small_alternative ~= nil and (not minetest.registered_nodes[node_ok(pos).name].walkable) then
+							if ent.spawn_small_alternative and (not minetest.registered_nodes[node_ok(pos).name].walkable) then
 								minetest.log("info", "Trying to spawn smaller alternative mob: "..ent.spawn_small_alternative)
 								spawn_action(orig_pos, node, active_object_count, active_object_count_wider, ent.spawn_small_alternative)
 							end
@@ -540,7 +542,7 @@ if mobs_spawn then
 		timer = timer + dtime
 		if timer >= 10 then
 			timer = 0
-			for _,player in pairs(minetest.get_connected_players()) do
+			for _,player in pairs(get_connected_players()) do
 				-- after this line each "break" means "continue"
 				local do_mob_spawning = true
 				repeat
@@ -548,15 +550,15 @@ if mobs_spawn then
 					--they happen in a single server step
 
 					local player_pos = player:get_pos()
-					local _,dimension = mcl_worlds.y_to_layer(player_pos.y)
+					local dimension = mcl_worlds.pos_to_dimension(player_pos)
 
 					if dimension == "void" or dimension == "default" then
 						break -- ignore void and unloaded area
 					end
 
-					local min,max = decypher_limits(player_pos.y)
+					local min, max = decypher_limits(player_pos.y)
 
-					for i = 1,math_random(1,4) do
+					for i = 1, math_random(1,4) do
 						-- after this line each "break" means "continue"
 						local do_mob_algorithm = true
 						repeat

mods/ENTITIES/mcl_mobs/crafts.lua

@@ -1,5 +1,5 @@
 
-local S = minetest.get_translator("mcl_mobs")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- name tag
 minetest.register_craftitem("mcl_mobs:nametag", {

mods/ENTITIES/mcl_paintings/init.lua

@@ -1,8 +1,9 @@
 mcl_paintings = {}
 
-dofile(minetest.get_modpath(minetest.get_current_modname()).."/paintings.lua")
+local modname = minetest.get_current_modname()
+dofile(minetest.get_modpath(modname).."/paintings.lua")
 
-local S = minetest.get_translator("mcl_paintings")
+local S = minetest.get_translator(modname)
 
 local math = math
 

mods/ENTITIES/mobs_mc/1_items_default.lua

@@ -8,7 +8,7 @@
 -- NOTE: Most strings intentionally not marked for translation, other mods already have these items.
 -- TODO: Remove this file eventually, most items are already outsourced in other mods.
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 local c = mobs_mc.is_item_variable_overridden
 
@@ -234,8 +234,8 @@ end
 if c("ender_eye") and c("blaze_powder") and c("blaze_rod") then
 	minetest.register_craft({
 		type = "shapeless",
-		output = 'mobs_mc:ender_eye',
-		recipe = { 'mobs_mc:blaze_powder', 'mobs_mc:blaze_rod'},
+		output = "mobs_mc:ender_eye",
+		recipe = { "mobs_mc:blaze_powder", "mobs_mc:blaze_rod"},
 	})
 end
 

mods/ENTITIES/mobs_mc/2_throwing.lua

@@ -6,7 +6,7 @@
 -- NOTE: Strings intentionally not marked for translation, other mods already have these items.
 -- TODO: Remove this file eventually, all items here are already outsourced in other mods.
 
---local S = minetest.get_translator("mobs_mc")
+--local S = minetest.get_translator(minetest.get_current_modname())
 
 --maikerumines throwing code
 --arrow (weapon)
@@ -83,7 +83,7 @@ THROWING_ARROW_ENTITY.on_step = function(self, dtime)
 	if self.timer>0.2 then
 		local objs = minetest.get_objects_inside_radius({x=pos.x,y=pos.y,z=pos.z}, 1.5)
 		for k, obj in pairs(objs) do
-			if obj:get_luaentity() ~= nil then
+			if obj:get_luaentity() then
 				if obj:get_luaentity().name ~= "mobs_mc:arrow_entity" and obj:get_luaentity().name ~= "__builtin:item" then
 					local damage = 3
 					minetest.sound_play("damage", {pos = pos}, true)
@@ -108,7 +108,7 @@ THROWING_ARROW_ENTITY.on_step = function(self, dtime)
 	if self.lastpos.x~=nil then
 		if node.name ~= "air" then
 			minetest.sound_play("bowhit1", {pos = pos}, true)
-			minetest.add_item(self.lastpos, 'mobs_mc:arrow')
+			minetest.add_item(self.lastpos, "mobs_mc:arrow")
 			self.object:remove()
 		end
 	end
@@ -155,7 +155,7 @@ end
 
 if c("arrow") and c("flint") and c("feather") and c("stick") then
 	minetest.register_craft({
-		output = 'mobs_mc:arrow 4',
+		output = "mobs_mc:arrow 4",
 		recipe = {
 			{mobs_mc.items.flint},
 			{mobs_mc.items.stick},
@@ -181,11 +181,11 @@ if c("bow") then
 	})
 
 	minetest.register_craft({
-		output = 'mobs_mc:bow_wood',
+		output = "mobs_mc:bow_wood",
 		recipe = {
-			{mobs_mc.items.string, mobs_mc.items.stick, ''},
-			{mobs_mc.items.string, '', mobs_mc.items.stick},
-			{mobs_mc.items.string, mobs_mc.items.stick, ''},
+			{mobs_mc.items.string, mobs_mc.items.stick, ""},
+			{mobs_mc.items.string, "", mobs_mc.items.stick},
+			{mobs_mc.items.string, mobs_mc.items.stick, ""},
 		}
 	})
 end
@@ -259,7 +259,7 @@ if c("egg") then
 	})
 
 	-- shoot egg
-	local mobs_shoot_egg = function (item, player, pointed_thing)
+	local function mobs_shoot_egg(item, player, pointed_thing)
 
 		local playerpos = player:get_pos()
 
@@ -349,7 +349,7 @@ mobs:register_arrow("mobs_mc:snowball_entity", {
 
 if c("snowball") then
 	-- shoot snowball
-	local mobs_shoot_snowball = function (item, player, pointed_thing)
+	local function mobs_shoot_snowball(item, player, pointed_thing)
 
 		local playerpos = player:get_pos()
 

mods/ENTITIES/mobs_mc/4_heads.lua

@@ -5,7 +5,7 @@
 -- TODO: Remove this file eventually, all items here are already outsourced in other mods.
 -- TODO: Add translation.
 
---local S = minetest.get_translator("mobs_mc")
+--local S = local S = minetest.get_translator(minetest.get_current_modname())
 
 -- Heads system
 

mods/ENTITIES/mobs_mc/agent.lua

@@ -2,7 +2,7 @@
 --################### AGENT - seemingly unused
 --###################
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mobs:register_mob("mobs_mc:agent", {
 	type = "npc",

mods/ENTITIES/mobs_mc/bat.lua

@@ -1,6 +1,6 @@
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mobs:register_mob("mobs_mc:bat", {
 	description = S("Bat"),

mods/ENTITIES/mobs_mc/blaze.lua

@@ -3,7 +3,7 @@
 -- Model and mobs_blaze.png see https://github.com/22i/minecraft-voxel-blender-models -hi 22i ~jordan4ibanez
 -- blaze.lua partial copy of mobs_mc/ghast.lua
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### BLAZE

mods/ENTITIES/mobs_mc/chicken.lua

@@ -1,6 +1,6 @@
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### CHICKEN

mods/ENTITIES/mobs_mc/cow+mooshroom.lua

@@ -1,6 +1,6 @@
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 local cow_def = {
 	description = S("Cow"),

mods/ENTITIES/mobs_mc/creeper.lua

@@ -1,6 +1,6 @@
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### CREEPER
@@ -72,7 +72,7 @@ mobs:register_mob("mobs_mc:creeper", {
 	-- TODO: Make creeper flash after doing this as well.
 	-- TODO: Test and debug this code.
 	on_rightclick = function(self, clicker)
-		if self._forced_explosion_countdown_timer ~= nil then
+		if self._forced_explosion_countdown_timer then
 			return
 		end
 		local item = clicker:get_wielded_item()
@@ -92,7 +92,7 @@ mobs:register_mob("mobs_mc:creeper", {
 		end
 	end,
 	do_custom = function(self, dtime)
-		if self._forced_explosion_countdown_timer ~= nil then
+		if self._forced_explosion_countdown_timer then
 			self._forced_explosion_countdown_timer = self._forced_explosion_countdown_timer - dtime
 			if self._forced_explosion_countdown_timer <= 0 then
 				mobs:boom(self, mcl_util.get_object_center(self.object), self.explosion_strength)
@@ -196,7 +196,7 @@ mobs:register_mob("mobs_mc:creeper_charged", {
 	-- TODO: Make creeper flash after doing this as well.
 	-- TODO: Test and debug this code.
 	on_rightclick = function(self, clicker)
-		if self._forced_explosion_countdown_timer ~= nil then
+		if self._forced_explosion_countdown_timer then
 			return
 		end
 		local item = clicker:get_wielded_item()
@@ -216,7 +216,7 @@ mobs:register_mob("mobs_mc:creeper_charged", {
 		end
 	end,
 	do_custom = function(self, dtime)
-		if self._forced_explosion_countdown_timer ~= nil then
+		if self._forced_explosion_countdown_timer then
 			self._forced_explosion_countdown_timer = self._forced_explosion_countdown_timer - dtime
 			if self._forced_explosion_countdown_timer <= 0 then
 				mobs:boom(self, mcl_util.get_object_center(self.object), self.explosion_strength)

mods/ENTITIES/mobs_mc/ender_dragon.lua

@@ -2,7 +2,7 @@
 --################### ENDERDRAGON
 --###################
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mobs:register_mob("mobs_mc:enderdragon", {
 	description = S("Ender Dragon"),

mods/ENTITIES/mobs_mc/enderman.lua

@@ -24,9 +24,11 @@
 -- added rain damage.
 -- fixed the grass_with_dirt issue.
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
-local telesound = function(pos, is_source)
+local vector = vector
+
+local function telesound(pos, is_source)
 	local snd
 	if is_source then
 		snd = "mobs_mc_enderman_teleport_src"
@@ -302,7 +304,7 @@ mobs:register_mob("mobs_mc:enderman", {
 				if self.attacking then
 					local target = self.attacking
 					local pos = target:get_pos()
-					if pos ~= nil then
+					if pos then
 						if vector.distance(self.object:get_pos(), target:get_pos()) > 10 then
 							self:teleport(target)
 						end
@@ -341,8 +343,8 @@ mobs:register_mob("mobs_mc:enderman", {
 			--	self:teleport(nil)
 			--	self.state = ""
 			--else
-				if self.attack ~= nil and not minetest.settings:get_bool("creative_mode") then
-					self.state = 'attack'
+				if self.attack and not minetest.settings:get_bool("creative_mode") then
+					self.state = "attack"
 				end
 			--end
 		end
@@ -459,7 +461,7 @@ mobs:register_mob("mobs_mc:enderman", {
 					end
 				end
 			end
-		elseif self._taken_node ~= nil and self._taken_node ~= "" and self._take_place_timer >= self._next_take_place_time then
+		elseif self._taken_node and self._taken_node ~= "" and self._take_place_timer >= self._next_take_place_time then
 			-- Place taken node
 			self._take_place_timer = 0
 			self._next_take_place_time = math.random(take_frequency_min, take_frequency_max)
@@ -485,12 +487,12 @@ mobs:register_mob("mobs_mc:enderman", {
 		end
 	end,
 	do_teleport = function(self, target)
-		if target ~= nil then
+		if target then
 			local target_pos = target:get_pos()
 			-- Find all solid nodes below air in a 10×10×10 cuboid centered on the target
 			local nodes = minetest.find_nodes_in_area_under_air(vector.subtract(target_pos, 5), vector.add(target_pos, 5), {"group:solid", "group:cracky", "group:crumbly"})
 			local telepos
-			if nodes ~= nil then
+			if nodes then
 				if #nodes > 0 then
 					-- Up to 64 attempts to teleport
 					for n=1, math.min(64, #nodes) do
@@ -525,7 +527,7 @@ mobs:register_mob("mobs_mc:enderman", {
 				-- We need to add (or subtract) different random numbers to each vector component, so it couldn't be done with a nice single vector.add() or .subtract():
 				local randomCube = vector.new( pos.x + 8*(pr:next(0,16)-8), pos.y + 8*(pr:next(0,16)-8), pos.z + 8*(pr:next(0,16)-8) )
 				local nodes = minetest.find_nodes_in_area_under_air(vector.subtract(randomCube, 4), vector.add(randomCube, 4), {"group:solid", "group:cracky", "group:crumbly"})
-				if nodes ~= nil then
+				if nodes then
 					if #nodes > 0 then
 						-- Up to 8 low-level (in total up to 8*8 = 64) attempts to teleport
 						for n=1, math.min(8, #nodes) do
@@ -557,13 +559,13 @@ mobs:register_mob("mobs_mc:enderman", {
 	end,
 	on_die = function(self, pos)
 		-- Drop carried node on death
-		if self._taken_node ~= nil and self._taken_node ~= "" then
+		if self._taken_node and self._taken_node ~= "" then
 			minetest.add_item(pos, self._taken_node)
 		end
 	end,
 	do_punch = function(self, hitter, tflp, tool_caps, dir)
 		-- damage from rain caused by itself so we don't want it to attack itself.
-		if hitter ~= self.object and hitter ~= nil then
+		if hitter ~= self.object and hitter then
 			--if (minetest.get_timeofday() * 24000) > 5001 and (minetest.get_timeofday() * 24000) < 19000 then
 			--	self:teleport(nil)
 			--else

mods/ENTITIES/mobs_mc/endermite.lua

@@ -2,7 +2,7 @@
 --################### ENDERMITE
 --###################
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mobs:register_mob("mobs_mc:endermite", {
 	description = S("Endermite"),

mods/ENTITIES/mobs_mc/ghast.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### GHAST

mods/ENTITIES/mobs_mc/guardian.lua

@@ -2,7 +2,7 @@
 --################### GUARDIAN
 --###################
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mobs:register_mob("mobs_mc:guardian", {
 	description = S("Guardian"),

mods/ENTITIES/mobs_mc/guardian_elder.lua

@@ -4,7 +4,7 @@
 --################### GUARDIAN
 --###################
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mobs:register_mob("mobs_mc:guardian_elder", {
 	description = S("Elder Guardian"),

mods/ENTITIES/mobs_mc/horse.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### HORSE

mods/ENTITIES/mobs_mc/init.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local path = minetest.get_modpath("mobs_mc")
+local path = minetest.get_modpath(minetest.get_current_modname())
 
 if not minetest.get_modpath("mobs_mc_gameconfig") then
 	mobs_mc = {}

mods/ENTITIES/mobs_mc/iron_golem.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### IRON GOLEM

mods/ENTITIES/mobs_mc/llama.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### LLAMA

mods/ENTITIES/mobs_mc/ocelot.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### OCELOT AND CAT

mods/ENTITIES/mobs_mc/parrot.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### PARROT

mods/ENTITIES/mobs_mc/pig.lua

@@ -1,6 +1,6 @@
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mobs:register_mob("mobs_mc:pig", {
 	description = S("Pig"),

mods/ENTITIES/mobs_mc/polar_bear.lua

@@ -1,6 +1,6 @@
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### POLARBEAR

mods/ENTITIES/mobs_mc/rabbit.lua

@@ -1,6 +1,6 @@
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 local rabbit = {
 	description = S("Rabbit"),

mods/ENTITIES/mobs_mc/sheep.lua

@@ -1,6 +1,6 @@
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### SHEEP
@@ -38,7 +38,7 @@ local rainbow_colors = {
 	"unicolor_red_violet"
 }
 
-if minetest.get_modpath("mcl_wool") ~= nil then
+if minetest.get_modpath("mcl_wool") then
 	colors["unicolor_light_blue"] = { mobs_mc.items.wool_light_blue, "#5050FFD0" }
 end
 

mods/ENTITIES/mobs_mc/shulker.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### SHULKER

mods/ENTITIES/mobs_mc/silverfish.lua

@@ -2,7 +2,7 @@
 --################### SILVERFISH
 --###################
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mobs:register_mob("mobs_mc:silverfish", {
 	description = S("Silverfish"),
@@ -61,7 +61,7 @@ if minetest.get_modpath("default") and mobs_mc.create_monster_egg_nodes then
 		description = "Stone Monster Egg",
 		tiles = {"default_stone.png"},
 		groups = {oddly_breakable_by_hand = 2, spawns_silverfish = 1},
-		drop = '',
+		drop = "",
 		is_ground_content = true,
 		sounds = default.node_sound_stone_defaults(),
 		after_dig_node = spawn_silverfish,
@@ -72,7 +72,7 @@ if minetest.get_modpath("default") and mobs_mc.create_monster_egg_nodes then
 		tiles = {"default_cobble.png"},
 		is_ground_content = false,
 		groups = {oddly_breakable_by_hand = 2, spawns_silverfish = 1},
-		drop = '',
+		drop = "",
 		sounds = default.node_sound_stone_defaults(),
 		after_dig_node = spawn_silverfish,
 	})
@@ -82,7 +82,7 @@ if minetest.get_modpath("default") and mobs_mc.create_monster_egg_nodes then
 		tiles = {"default_mossycobble.png"},
 		is_ground_content = false,
 		groups = {oddly_breakable_by_hand = 2, spawns_silverfish = 1},
-		drop = '',
+		drop = "",
 		sounds = default.node_sound_stone_defaults(),
 		after_dig_node = spawn_silverfish,
 	})
@@ -94,7 +94,7 @@ if minetest.get_modpath("default") and mobs_mc.create_monster_egg_nodes then
 		tiles = {"default_stone_brick.png"},
 		is_ground_content = false,
 		groups = {oddly_breakable_by_hand = 2, spawns_silverfish = 1},
-		drop = '',
+		drop = "",
 		sounds = default.node_sound_stone_defaults(),
 		after_dig_node = spawn_silverfish,
 	})
@@ -104,7 +104,7 @@ if minetest.get_modpath("default") and mobs_mc.create_monster_egg_nodes then
 		tiles = {"default_stone_block.png"},
 		is_ground_content = false,
 		groups = {oddly_breakable_by_hand = 2, spawns_silverfish = 1},
-		drop = '',
+		drop = "",
 		sounds = default.node_sound_stone_defaults(),
 		after_dig_node = spawn_silverfish,
 	})

mods/ENTITIES/mobs_mc/skeleton+stray.lua

@@ -3,8 +3,8 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
-local mod_bows = minetest.get_modpath("mcl_bows") ~= nil
+local S = minetest.get_translator(minetest.get_current_modname())
+local mod_bows = minetest.get_modpath("mcl_bows")
 
 --###################
 --################### SKELETON

mods/ENTITIES/mobs_mc/skeleton_wither.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### WITHER SKELETON

mods/ENTITIES/mobs_mc/slime+magma_cube.lua

@@ -1,6 +1,6 @@
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- Returns a function that spawns children in a circle around pos.
 -- To be used as on_die callback.
@@ -41,10 +41,10 @@ local spawn_children_on_die = function(child_mob, children_count, spawn_distance
 		-- If mother was murdered, children attack the killer after 1 second
 		if self.state == "attack" then
 			minetest.after(1.0, function(children, enemy)
-				for c=1, #children do
+				for c = 1, #children do
 					local child = children[c]
 					local le = child:get_luaentity()
-					if le ~= nil then
+					if le then
 						le.state = "attack"
 						le.attack = enemy
 					end

mods/ENTITIES/mobs_mc/snowman.lua

@@ -3,12 +3,12 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 local snow_trail_frequency = 0.5 -- Time in seconds for checking to add a new snow trail
 
 local mobs_griefing = minetest.settings:get_bool("mobs_griefing") ~= false
-local mod_throwing = minetest.get_modpath("mcl_throwing") ~= nil
+local mod_throwing = minetest.get_modpath("mcl_throwing")
 
 local gotten_texture = {
 	"mobs_mc_snowman.png",

mods/ENTITIES/mobs_mc/spider.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### SPIDER

mods/ENTITIES/mobs_mc/squid.lua

@@ -4,7 +4,7 @@
 --################### SQUID
 --###################
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mobs:register_mob("mobs_mc:squid", {
 	description = S("Squid"),

mods/ENTITIES/mobs_mc/vex.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### VEX

mods/ENTITIES/mobs_mc/villager.lua

@@ -19,7 +19,7 @@
 --     TODO: Internal inventory, pick up items, trade with other villagers
 --     TODO: Farm stuff
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 local N = function(s) return s end
 local F = minetest.formspec_escape
 

mods/ENTITIES/mobs_mc/villager_evoker.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### EVOKER

mods/ENTITIES/mobs_mc/villager_illusioner.lua

@@ -3,8 +3,8 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
-local mod_bows = minetest.get_modpath("mcl_bows") ~= nil
+local S = minetest.get_translator(minetest.get_current_modname())
+local mod_bows = minetest.get_modpath("mcl_bows")
 
 mobs:register_mob("mobs_mc:illusioner", {
 	description = S("Illusioner"),

mods/ENTITIES/mobs_mc/villager_vindicator.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### VINDICATOR

mods/ENTITIES/mobs_mc/villager_zombie.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### ZOMBIE VILLAGER

mods/ENTITIES/mobs_mc/witch.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### WITCH

mods/ENTITIES/mobs_mc/wither.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### WITHER

mods/ENTITIES/mobs_mc/wolf.lua

@@ -1,6 +1,6 @@
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 local default_walk_chance = 50
 

mods/ENTITIES/mobs_mc/zombie.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### ZOMBIE

mods/ENTITIES/mobs_mc/zombiepig.lua

@@ -3,7 +3,7 @@
 --made for MC like Survival game
 --License for code WTFPL and otherwise stated in readmes
 
-local S = minetest.get_translator("mobs_mc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --###################
 --################### ZOMBIE PIGMAN

mods/ENVIRONMENT/mcl_void_damage/init.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_void_damage")
+local S = minetest.get_translator(minetest.get_current_modname())
 --local enable_damage = minetest.settings:get_bool("enable_damage")
 
 local pos_to_dim = mcl_worlds.pos_to_dimension

mods/ENVIRONMENT/mcl_weather/init.lua

@@ -1,4 +1,4 @@
-local modpath = minetest.get_modpath("mcl_weather")
+local modpath = minetest.get_modpath(minetest.get_current_modname())
 
 mcl_weather = {}
 
@@ -12,6 +12,6 @@ dofile(modpath.."/snow.lua")
 dofile(modpath.."/rain.lua")
 dofile(modpath.."/nether_dust.lua")
 
-if minetest.get_modpath("lightning") ~= nil then
+if minetest.get_modpath("lightning") then
 	dofile(modpath.."/thunder.lua")
 end

mods/ENVIRONMENT/mcl_weather/rain.lua

@@ -96,7 +96,7 @@ end
 -- be sure to remove sound before removing player otherwise soundhandler reference will be lost.
 function mcl_weather.rain.remove_player(player)
 	local player_meta = mcl_weather.players[player:get_player_name()]
-	if player_meta ~= nil and player_meta.origin_sky ~= nil then
+	if player_meta and player_meta.origin_sky then
 		player:set_clouds({color="#FFF0F0E5"})
 		mcl_weather.players[player:get_player_name()] = nil
 	end
@@ -120,12 +120,12 @@ end)
 -- when player stay on 'edge' where sound should play and stop depending from random raindrop appearance.
 function mcl_weather.rain.update_sound(player)
 	local player_meta = mcl_weather.players[player:get_player_name()]
-	if player_meta ~= nil then
-		if player_meta.sound_updated ~= nil and player_meta.sound_updated + 5 > minetest.get_gametime() then
+	if player_meta then
+		if player_meta.sound_updated and player_meta.sound_updated + 5 > minetest.get_gametime() then
 			return false
 		end
 
-		if player_meta.sound_handler ~= nil then
+		if player_meta.sound_handler then
 			if mcl_weather.rain.last_rp_count == 0 then
 				minetest.sound_fade(player_meta.sound_handler, -0.5, 0.0)
 				player_meta.sound_handler = nil
@@ -141,7 +141,7 @@ end
 -- rain sound removed from player.
 function mcl_weather.rain.remove_sound(player)
 	local player_meta = mcl_weather.players[player:get_player_name()]
-	if player_meta ~= nil and player_meta.sound_handler ~= nil then
+	if player_meta and player_meta.sound_handler then
 		minetest.sound_fade(player_meta.sound_handler, -0.5, 0.0)
 		player_meta.sound_handler = nil
 		player_meta.sound_updated = nil

mods/ENVIRONMENT/mcl_weather/weather_core.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_weather")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 local math = math
 
@@ -49,7 +49,7 @@ minetest.register_on_shutdown(save_weather)
 
 function mcl_weather.get_rand_end_time(min_duration, max_duration)
 	local r
-	if min_duration ~= nil and max_duration ~= nil then
+	if min_duration and max_duration then
 		r = math.random(min_duration, max_duration)
 	else
 		r = math.random(mcl_weather.min_duration, mcl_weather.max_duration)
@@ -170,8 +170,8 @@ end
 function mcl_weather.change_weather(new_weather, explicit_end_time, changer_name)
 	local changer_name = changer_name or debug.getinfo(2).name.."()"
 
-	if (mcl_weather.reg_weathers ~= nil and mcl_weather.reg_weathers[new_weather] ~= nil) then
-		if (mcl_weather.state ~= nil and mcl_weather.reg_weathers[mcl_weather.state] ~= nil) then
+	if (mcl_weather.reg_weathers and mcl_weather.reg_weathers[new_weather]) then
+		if (mcl_weather.state and mcl_weather.reg_weathers[mcl_weather.state]) then
 			mcl_weather.reg_weathers[mcl_weather.state].clear()
 		end
 
@@ -269,7 +269,7 @@ minetest.register_chatcommand("toggledownfall", {
 -- Configuration setting which allows user to disable ABM for weathers (if they use it).
 -- Weather mods expected to be use this flag before registering ABM.
 local weather_allow_abm = minetest.settings:get_bool("weather_allow_abm")
-if weather_allow_abm ~= nil and weather_allow_abm == false then
+if weather_allow_abm == false then
 	mcl_weather.allow_abm = false
 end
 

mods/HELP/doc/doc/init.lua

@@ -1,6 +1,10 @@
-local S = minetest.get_translator("doc")
+local S = minetest.get_translator(minetest.get_current_modname())
 local F = function(f) return minetest.formspec_escape(S(f)) end
 
+local mod_central_messages = minetest.get_modpath("central_message")
+local mod_inventory_plus = minetest.get_modpath("inventory_plus")
+
+local math = math
 local colorize = minetest.colorize
 
 doc = {}
@@ -63,7 +67,7 @@ local set_category_order_was_called = false
 local function get_entry(category_id, entry_id)
 	local category = doc.data.categories[category_id]
 	local entry
-	if category ~= nil then
+	if category then
 		entry = category.entries[entry_id]
 	end
 	if category == nil or entry == nil then
@@ -93,7 +97,7 @@ end
 
 -- Add a new category
 function doc.add_category(id, def)
-	if doc.data.categories[id] == nil and id ~= nil then
+	if doc.data.categories[id] == nil and id then
 		doc.data.categories[id] = {}
 		doc.data.categories[id].entries = {}
 		doc.data.categories[id].entry_count = 0
@@ -123,7 +127,7 @@ end
 -- Add a new entry
 function doc.add_entry(category_id, entry_id, def)
 	local cat = doc.data.categories[category_id]
-	if cat ~= nil then
+	if cat then
 		local hidden = def.hidden or (def.hidden == nil and cat.def.hide_entries_by_default)
 		if hidden then
 			cat.hidden_count = cat.hidden_count + 1
@@ -177,7 +181,7 @@ function doc.mark_entry_as_revealed(playername, category_id, entry_id)
 		doc.data.players[playername].entry_textlist_needs_updating = true
 		-- Notify player of entry revelation
 		if doc.data.players[playername].stored_data.notify_on_reveal == true then
-			if minetest.get_modpath("central_message") ~= nil then
+			if mod_central_messages then
 				local cat = doc.data.categories[category_id]
 				cmsg.push_message_player(minetest.get_player_by_name(playername), S("New help entry unlocked: @1 > @2", cat.def.name, entry.name))
 			end
@@ -224,7 +228,7 @@ function doc.mark_all_entries_as_revealed(playername)
 		msg = S("All help entries are already revealed.")
 	end
 	-- Notify
-	if minetest.get_modpath("central_message") ~= nil then
+	if mod_central_messages then
 		cmsg.push_message_player(minetest.get_player_by_name(playername), msg)
 	else
 		minetest.chat_send_player(playername, msg)
@@ -427,7 +431,7 @@ end
 -- Returns the currently viewed entry and/or category of the player
 function doc.get_selection(playername)
 	local playerdata = doc.data.players[playername]
-	if playerdata ~= nil then
+	if playerdata then
 		local cat = playerdata.category
 		if cat then
 			local entry = playerdata.entry
@@ -459,7 +463,7 @@ function doc.entry_builders.text_and_gallery(data, playername)
 	local stolen_height = 0
 	local formstring = ""
 	-- Only add the gallery if images are in the data, otherwise, the text widget gets all of the space
-	if data.images ~= nil then
+	if data.images then
 		local gallery
 		gallery, stolen_height = doc.widgets.gallery(data.images, playername, nil, doc.FORMSPEC.ENTRY_END_Y + 0.2, nil, nil, nil, nil, false)
 		formstring = formstring .. gallery
@@ -605,7 +609,7 @@ do
 		minetest.log("action", "[doc] doc.mt opened.")
 		local string = file:read()
 		io.close(file)
-		if(string ~= nil) then
+		if string then
 			local savetable = minetest.deserialize(string)
 			for name, players_stored_data in pairs(savetable.players_stored_data) do
 				doc.data.players[name] = {}
@@ -672,13 +676,13 @@ function doc.formspec_main(playername)
 				local data = doc.data.categories[id]
 				local bw = doc.FORMSPEC.WIDTH / math.floor(((doc.data.category_count-1) / CATEGORYFIELDSIZE.HEIGHT)+1)
 				-- Skip categories which do not exist
-				if data ~= nil then
+				if data then
 					-- Category buton
 					local button = "button["..((x-1)*bw)..","..y..";"..bw..",1;doc_button_category_"..id..";"..minetest.formspec_escape(data.def.name).."]"
 					local tooltip = ""
 					-- Optional description
-					if data.def.description ~= nil then
-					tooltip = "tooltip[doc_button_category_"..id..";"..minetest.formspec_escape(data.def.description).."]"
+					if data.def.description then
+						tooltip = "tooltip[doc_button_category_"..id..";"..minetest.formspec_escape(data.def.description).."]"
 					end
 					formstring = formstring .. button .. tooltip
 					y = y + 1
@@ -701,7 +705,7 @@ function doc.formspec_main(playername)
 				end
 			end
 			local sel = doc.data.categories[doc.data.players[playername].category]
-			if sel ~= nil then
+			if sel then
 				formstring = formstring .. ";"
 				formstring = formstring .. doc.data.categories[doc.data.players[playername].category].order_position
 			end
@@ -711,7 +715,7 @@ function doc.formspec_main(playername)
 			notify_checkbox_y = doc.FORMSPEC.HEIGHT-1
 		end
 		local text
-		if minetest.get_modpath("central_message") then
+		if mod_central_messages then
 			text = F("Notify me when new help is available")
 		else
 			text = F("Play notification sound when new help is available")
@@ -944,7 +948,7 @@ function doc.process_form(player,formname,fields)
 	local playername = player:get_player_name()
 	--[[ process clicks on the tab header ]]
 	if(formname == "doc:main" or formname == "doc:category" or formname == "doc:entry") then
-		if fields.doc_header ~= nil then
+		if fields.doc_header then
 			local tab = tonumber(fields.doc_header)
 			local formspec, subformname, contents
 			local cid, eid
@@ -959,7 +963,7 @@ function doc.process_form(player,formname,fields)
 			elseif(tab==3) then
 				doc.data.players[playername].galidx = 1
 				contents = doc.formspec_entry(cid, eid, playername)
-				if cid ~= nil and eid ~= nil then
+				if cid and eid then
 					doc.mark_entry_as_viewed(playername, cid, eid)
 				end
 				subformname = "entry"
@@ -984,7 +988,7 @@ function doc.process_form(player,formname,fields)
 		if fields["doc_mainlist"] then
 			local event = minetest.explode_textlist_event(fields["doc_mainlist"])
 			local cid = doc.data.category_order[event.index]
-			if cid ~= nil then
+			if cid then
 				if event.type == "CHG" then
 					doc.data.players[playername].catsel = nil
 					doc.data.players[playername].category = cid
@@ -1014,10 +1018,10 @@ function doc.process_form(player,formname,fields)
 	elseif(formname == "doc:category") then
 		if fields["doc_button_goto_entry"] then
 			local cid = doc.data.players[playername].category
-			if cid ~= nil then
+			if cid then
 				local eid = nil
 				local eids, catsel = doc.data.players[playername].entry_ids, doc.data.players[playername].catsel
-				if eids ~= nil and catsel ~= nil then
+				if eids and catsel then
 					eid = eids[catsel]
 				end
 				doc.data.players[playername].galidx = 1
@@ -1040,7 +1044,7 @@ function doc.process_form(player,formname,fields)
 				local cid = doc.data.players[playername].category
 				local eid = nil
 				local eids, catsel = doc.data.players[playername].entry_ids, event.index
-				if eids ~= nil and catsel ~= nil then
+				if eids and catsel then
 					eid = eids[catsel]
 				end
 				doc.mark_entry_as_viewed(playername, cid, eid)
@@ -1101,7 +1105,7 @@ function doc.process_form(player,formname,fields)
 			minetest.show_formspec(playername, "doc:entry", formspec)
 		end
 	else
-		if fields["doc_inventory_plus"] and minetest.get_modpath("inventory_plus") then
+		if fields["doc_inventory_plus"] and mod_inventory_plus then
 			doc.show_doc(playername)
 			return
 		end
@@ -1169,7 +1173,7 @@ minetest.register_on_joinplayer(function(player)
 	end
 
 	-- Add button for Inventory++
-	if minetest.get_modpath("inventory_plus") ~= nil then
+	if mod_inventory_plus then
 		inventory_plus.register_button(player, "doc_inventory_plus", S("Help"))
 	end
 end)
@@ -1180,7 +1184,7 @@ local function button_action(player)
 end
 
 -- Unified Inventory
-if minetest.get_modpath("unified_inventory") ~= nil then
+if minetest.get_modpath("unified_inventory") then
 	unified_inventory.register_button("doc", {
 		type = "image",
 		image = "doc_button_icon_hires.png",
@@ -1190,7 +1194,7 @@ if minetest.get_modpath("unified_inventory") ~= nil then
 end
 
 -- sfinv_buttons
-if minetest.get_modpath("sfinv_buttons") ~= nil then
+if minetest.get_modpath("sfinv_buttons") then
 	sfinv_buttons.register_button("doc", {
 		image = "doc_button_icon_lores.png",
 		tooltip = S("Collection of help texts"),

mods/HELP/doc/doc_identifier/init.lua

@@ -1,5 +1,7 @@
 local S = minetest.get_translator(minetest.get_current_modname())
 
+local mod_doc_basics = minetest.get_modpath("doc_basics")
+
 local doc_identifier = {}
 
 doc_identifier.registered_objects = {}
@@ -25,9 +27,9 @@ function doc_identifier.identify(itemstack, user, pointed_thing)
 		elseif itype == "error_unknown" then
 			vsize = vsize + 2
 			local mod
-			if param ~= nil then
+			if param then
 				local colon = string.find(param, ":")
-				if colon ~= nil and colon > 1 then
+				if colon and colon > 1 then
 					mod = string.sub(param,1,colon-1)
 				end
 			end
@@ -37,8 +39,8 @@ function doc_identifier.identify(itemstack, user, pointed_thing)
 				S("• The author of the game or a mod has made a mistake")
 			message = message .. "\n\n"
 
-			if mod ~= nil then
-				if minetest.get_modpath(mod) ~= nil then
+			if mod then
+				if minetest.get_modpath(mod) then
 					message = message .. S("It appears to originate from the mod “@1”, which is enabled.", mod)
 					message = message .. "\n"
 				else
@@ -46,7 +48,7 @@ function doc_identifier.identify(itemstack, user, pointed_thing)
 					message = message .. "\n"
 				end
 			end
-			if param ~= nil then
+			if param then
 				message = message .. S("Its identifier is “@1”.", param)
 			end
 		elseif itype == "error_ignore" then
@@ -67,7 +69,7 @@ function doc_identifier.identify(itemstack, user, pointed_thing)
 	if pointed_thing.type == "node" then
 		local pos = pointed_thing.under
 		local node = minetest.get_node(pos)
-		if minetest.registered_nodes[node.name] ~= nil then
+		if minetest.registered_nodes[node.name] then
 			--local nodedef = minetest.registered_nodes[node.name]
 			if(node.name == "ignore") then
 				show_message(username, "error_ignore")
@@ -83,14 +85,14 @@ function doc_identifier.identify(itemstack, user, pointed_thing)
 		local object = pointed_thing.ref
 		local le = object:get_luaentity()
 		if object:is_player() then
-			if minetest.get_modpath("doc_basics") ~= nil and doc.entry_exists("basics", "players") then
+			if mod_doc_basics and doc.entry_exists("basics", "players") then
 				doc.show_entry(username, "basics", "players", true)
 			else
 				-- Fallback message
 				show_message(username, "player")
 			end
 		-- luaentity exists
-		elseif le ~= nil then
+		elseif le then
 			local ro = doc_identifier.registered_objects[le.name]
 			-- Dropped items
 			if le.name == "__builtin:item" then
@@ -113,7 +115,7 @@ function doc_identifier.identify(itemstack, user, pointed_thing)
 					doc.show_entry(username, "nodes", itemstring, true)
 				end
 			-- A known registered object
-			elseif ro ~= nil then
+			elseif ro then
 				doc.show_entry(username, ro.category, ro.entry, true)
 			-- Undefined object (error)
 			elseif minetest.registered_entities[le.name] == nil then
@@ -196,7 +198,7 @@ minetest.register_craft({
 		   {"group:stick", ""} }
 })
 
-if minetest.get_modpath("mcl_core") ~= nil then
+if minetest.get_modpath("mcl_core") then
 	minetest.register_craft({
 		output = "doc_identifier:identifier_solid",
 		recipe = { { "mcl_core:glass" },

mods/HELP/doc/doc_items/init.lua

@@ -42,12 +42,12 @@ local forbidden_core_factoids = {}
 -- Helper functions
 local function yesno(bool)
 	if bool == true then
-        return S("Yes")
+		return S("Yes")
 	elseif bool == false then
-        return S("No")
+		return S("No")
 	else
-        return "N/A"
-    end
+		return "N/A"
+	end
 end
 
 local function groups_to_string(grouptable, filter)
@@ -60,7 +60,7 @@ local function groups_to_string(grouptable, filter)
 				-- List seperator
 				gstring = gstring .. S(", ")
 			end
-			if groupdefs[id] ~= nil and doc.sub.items.settings.friendly_group_names == true then
+			if groupdefs[id] and doc.sub.items.settings.friendly_group_names == true then
 				gstring = gstring .. groupdefs[id]
 			else
 				gstring = gstring .. id
@@ -123,9 +123,9 @@ end
 
 local function get_entry_name(itemstring)
 	local def = minetest.registered_items[itemstring]
-	if def._doc_items_entry_name ~= nil then
+	if def._doc_items_entry_name then
 		return def._doc_items_entry_name
-	elseif item_name_overrides[itemstring] ~= nil then
+	elseif item_name_overrides[itemstring] then
 		return item_name_overrides[itemstring]
 	else
 		return def.description
@@ -133,7 +133,7 @@ local function get_entry_name(itemstring)
 end
 
 function doc.sub.items.get_group_name(groupname)
-	if groupdefs[groupname] ~= nil and doc.sub.items.settings.friendly_group_names == true then
+	if groupdefs[groupname] and doc.sub.items.settings.friendly_group_names == true then
 		return groupdefs[groupname]
 	else
 		return groupname
@@ -163,9 +163,9 @@ local function factoid_toolcaps(tool_capabilities, check_uses)
 
 	local formstring = ""
 	if check_uses == nil then check_uses = false end
-	if tool_capabilities ~= nil and tool_capabilities ~= {} then
+	if tool_capabilities and tool_capabilities ~= {} then
 		local groupcaps = tool_capabilities.groupcaps
-		if groupcaps ~= nil then
+		if groupcaps then
 			local miningcapstr = ""
 			local miningtimesstr = ""
 			local miningusesstr = ""
@@ -198,7 +198,7 @@ local function factoid_toolcaps(tool_capabilities, check_uses)
 				caplines = caplines + 1
 
 				for rating=3, 1, -1 do
-					if v.times ~= nil and v.times[rating] ~= nil then
+					if v.times and v.times[rating] then
 						local maxtime = v.times[rating]
 						local mintime
 						local mintimestr, maxtimestr
@@ -265,7 +265,7 @@ local function factoid_toolcaps(tool_capabilities, check_uses)
 
 		-- Weapon data
 		local damage_groups = tool_capabilities.damage_groups
-		if damage_groups ~= nil then
+		if damage_groups then
 			formstring = formstring .. S("This is a melee weapon which deals damage by punching.") .. "\n"
 			-- Damage groups
 			formstring = formstring .. S("Maximum damage per hit:") .. "\n"
@@ -276,7 +276,7 @@ local function factoid_toolcaps(tool_capabilities, check_uses)
 
 			-- Full punch interval
 			local punch = 1.0
-			if tool_capabilities.full_punch_interval ~= nil then
+			if tool_capabilities.full_punch_interval then
 				punch = tool_capabilities.full_punch_interval
 			end
 			formstring = formstring .. S("Full punch interval: @1 s", string.format("%.1f", punch))
@@ -302,7 +302,7 @@ local function factoid_mining_node(data)
 		-- Check if there are no mining groups at all
 		local nogroups = true
 		for groupname,_ in pairs(mininggroups) do
-			if data.def.groups[groupname] ~= nil or groupname == "dig_immediate" then
+			if data.def.groups[groupname] or groupname == "dig_immediate" then
 				nogroups = false
 				break
 			end
@@ -334,7 +334,7 @@ local function factoid_mining_node(data)
 			local minegroupcount = 0
 			for group,_ in pairs(mininggroups) do
 				local rating = data.def.groups[group]
-				if rating ~= nil then
+				if rating then
 					mstring = mstring .. S("• @1: @2", doc.sub.items.get_group_name(group), rating).."\n"
 					minegroupcount = minegroupcount + 1
 				end
@@ -358,14 +358,14 @@ local function range_factoid(itemstring, def)
 	local handrange = minetest.registered_items[""].range
 	local itemrange = def.range
 	if itemstring == "" then
-		if handrange ~= nil then
+		if handrange then
 			return S("Range: @1", itemrange)
 		else
 			return S("Range: 4")
 		end
 	else
 		if handrange == nil then handrange = 4 end
-		if itemrange ~= nil then
+		if itemrange then
 			return S("Range: @1", itemrange)
 		else
 			return S("Range: @1 (@2)", get_entry_name(""), handrange)
@@ -381,7 +381,7 @@ local function factoid_fuel(itemstring, ctype)
 
 	local formstring = ""
 	local result, decremented =  minetest.get_craft_result({method = "fuel", items = {itemstring}})
-	if result ~= nil and result.time > 0 then
+	if result and result.time > 0 then
 		local base
 		local burntext = burntime_to_text(result.time)
 		if ctype == "tools" then
@@ -424,7 +424,7 @@ local function entry_image(data)
 			formstring = formstring .. "image["..(doc.FORMSPEC.ENTRY_END_X-1)..","..doc.FORMSPEC.ENTRY_START_Y..";1,1;"..
 				minetest.registered_items[""].wield_image.."]"
 		-- Other items
-		elseif data.image ~= nil then
+		elseif data.image then
 			formstring = formstring .. "image["..(doc.FORMSPEC.ENTRY_END_X-1)..","..doc.FORMSPEC.ENTRY_START_Y..";1,1;"..data.image.."]"
 		else
 			formstring = formstring .. "item_image["..(doc.FORMSPEC.ENTRY_END_X-1)..","..doc.FORMSPEC.ENTRY_START_Y..";1,1;"..data.itemstring.."]"
@@ -442,7 +442,7 @@ factoid_generators.craftitems = {}
 --[[ Returns a list of all registered factoids for the specified category and type
 * category_id: Identifier of the Documentation System category in which the factoid appears
 * factoid_type: If set, oly returns factoid with a matching factoid_type.
-                If nil, all factoids for this category will be generated
+				If nil, all factoids for this category will be generated
 * data: Entry data to parse ]]
 local function factoid_custom(category_id, factoid_type, data)
 	local ftable = factoid_generators[category_id]
@@ -466,11 +466,11 @@ local function factoids_header(data, ctype)
 
 		local longdesc = data.longdesc
 		local usagehelp = data.usagehelp
-		if longdesc ~= nil then
+		if longdesc then
 			datastring = datastring .. S("Description: @1", longdesc)
 			datastring = newline2(datastring)
 		end
-		if usagehelp ~= nil then
+		if usagehelp then
 			datastring = datastring .. S("Usage help: @1", usagehelp)
 			datastring = newline2(datastring)
 		end
@@ -494,7 +494,7 @@ local function factoids_header(data, ctype)
 				datastring = datastring .. S("This item points to liquids.").."\n"
 			end
 		end
-			if data.def.on_use ~= nil then
+			if data.def.on_use then
 			if ctype == "nodes" then
 				datastring = datastring .. S("Punches with this block don't work as usual; melee combat and mining are either not possible or work differently.").."\n"
 			elseif ctype == "tools" then
@@ -528,7 +528,7 @@ local function factoids_footer(data, playername, ctype)
 	-- Show other “exposable” groups
 	if not forbidden_core_factoids.groups then
 		local gstring, gcount = groups_to_string(data.def.groups, miscgroups)
-		if gstring ~= nil then
+		if gstring then
 			if gcount == 1 then
 				if ctype == "nodes" then
 					datastring = datastring .. S("This block belongs to the @1 group.", gstring) .. "\n"
@@ -607,7 +607,7 @@ doc.add_category("nodes", {
 				datastring = datastring .. S("This block is a liquid with these properties:") .. "\n"
 				local range, renew, viscos
 				if data.def.liquid_range then range = data.def.liquid_range else range = 8 end
-				if data.def.liquid_renewable ~= nil then renew = data.def.liquid_renewable else renew = true end
+				if data.def.liquid_renewable then renew = data.def.liquid_renewable else renew = true end
 				if data.def.liquid_viscosity then viscos = data.def.liquid_viscosity else viscos = 0 end
 				if renew then
 					datastring = datastring .. S("• Renewable") .. "\n"
@@ -627,7 +627,7 @@ doc.add_category("nodes", {
 			--- Direct interaction with the player
 			---- Damage (very important)
 			if not forbidden_core_factoids.node_damage then
-				if data.def.damage_per_second ~= nil and data.def.damage_per_second > 1 then
+				if data.def.damage_per_second and data.def.damage_per_second > 1 then
 					datastring = datastring .. S("This block causes a damage of @1 hit points per second.", data.def.damage_per_second) .. "\n"
 				elseif data.def.damage_per_second == 1 then
 					datastring = datastring .. S("This block causes a damage of @1 hit point per second.", data.def.damage_per_second) .. "\n"
@@ -640,7 +640,7 @@ doc.add_category("nodes", {
 					end
 				end
 				local fdap = data.def.groups.fall_damage_add_percent
-				if fdap ~= nil and fdap ~= 0 then
+				if fdap and fdap ~= 0 then
 					if fdap > 0 then
 						datastring = datastring .. S("The fall damage on this block is increased by @1%.", fdap) .. "\n"
 					elseif fdap <= -100 then
@@ -662,11 +662,11 @@ doc.add_category("nodes", {
 					datastring = datastring .. S("This block can be climbed.").."\n"
 				end
 				local bouncy = data.def.groups.bouncy
-				if bouncy ~= nil and bouncy ~= 0 then
+				if bouncy and bouncy ~= 0 then
 					datastring = datastring .. S("This block will make you bounce off with an elasticity of @1%.", bouncy).."\n"
 				end
 				local slippery = data.def.groups.slippery
-				if slippery ~= nil and slippery ~= 0 then
+				if slippery and slippery ~= 0 then
 					datastring = datastring .. S("This block is slippery.") .. "\n"
 				end
 				datastring = datastring .. factoid_custom("nodes", "movement", data)
@@ -766,7 +766,7 @@ doc.add_category("nodes", {
 			datastring = newline2(datastring)
 
 			--- List nodes/groups to which this node connects to
-			if not forbidden_core_factoids.connects_to and data.def.connects_to ~= nil then
+			if not forbidden_core_factoids.connects_to and data.def.connects_to then
 				local nodes = {}
 				local groups = {}
 				for c=1,#data.def.connects_to do
@@ -781,7 +781,7 @@ doc.add_category("nodes", {
 				local nstring = ""
 				for n=1,#nodes do
 					local name
-					if item_name_overrides[nodes[n]] ~= nil then
+					if item_name_overrides[nodes[n]] then
 						name = item_name_overrides[nodes[n]]
 					else
 						name = description_for_formspec(nodes[n])
@@ -789,7 +789,7 @@ doc.add_category("nodes", {
 					if n > 1 then
 						nstring = nstring .. S(", ")
 					end
-					if name ~= nil then
+					if name then
 						nstring = nstring .. name
 					else
 						nstring = nstring .. S("Unknown Node")
@@ -820,7 +820,7 @@ doc.add_category("nodes", {
 			datastring = newline2(datastring)
 
 			-- Non-default drops
-			if not forbidden_core_factoids.drops and data.def.drop ~= nil and data.def.drop ~= data.itemstring and data.itemstring ~= "air" then
+			if not forbidden_core_factoids.drops and data.def.drop and data.def.drop ~= data.itemstring and data.itemstring ~= "air" then
 				-- TODO: Calculate drop probabilities of max > 1 like for max == 1
 				local function get_desc(stack)
 					return description_for_formspec(stack:get_name())
@@ -838,7 +838,7 @@ doc.add_category("nodes", {
 							datastring = datastring .. S("This block will drop the following when mined: @1.", desc).."\n"
 						end
 					end
-				elseif type(data.def.drop) == "table" and data.def.drop.items ~= nil then
+				elseif type(data.def.drop) == "table" and data.def.drop.items then
 					local max = data.def.drop.max_items
 					local dropstring = ""
 					local dropstring_base
@@ -892,7 +892,7 @@ doc.add_category("nodes", {
 						if chance > 0 then
 							probtable = {}
 							probtable.items = {}
-							for j=1,#data.def.drop.items[i].items do
+							for j = 1, #data.def.drop.items[i].items do
 								local dropstack = ItemStack(data.def.drop.items[i].items[j])
 								local itemstring = dropstack:get_name()
 								local desc = get_desc(dropstack)
@@ -963,7 +963,7 @@ doc.add_category("nodes", {
 						dropstring = dropstring .. dropstring_this
 						pcount = pcount + 1
 					end
-					if max ~= nil and max > 1 then
+					if max and max > 1 then
 						datastring = datastring .. S(dropstring_base, max, dropstring)
 					else
 						datastring = datastring .. S(dropstring_base, dropstring)
@@ -998,15 +998,15 @@ doc.add_category("tools", {
 		if entries[2].eid == "" then return false end
 
 		local comp = {}
-		for e=1, 2 do
+		for e = 1, 2 do
 			comp[e] = {}
 		end
 		-- No tool capabilities: Instant loser
-		if entries[1].data.def.tool_capabilities == nil and entries[2].data.def.tool_capabilities ~= nil then return false end
-		if entries[2].data.def.tool_capabilities == nil and entries[1].data.def.tool_capabilities ~= nil then return true end
+		if entries[1].data.def.tool_capabilities == nil and entries[2].data.def.tool_capabilities then return false end
+		if entries[2].data.def.tool_capabilities == nil and entries[1].data.def.tool_capabilities then return true end
 		-- No tool capabilities for both: Compare by uses
 		if entries[1].data.def.tool_capabilities == nil and entries[2].data.def.tool_capabilities == nil then
-			for e=1, 2 do
+			for e = 1, 2 do
 				if type(entries[e].data.def._doc_items_durability) == "number" then
 					comp[e].uses = entries[e].data.def._doc_items_durability
 				else
@@ -1061,7 +1061,7 @@ doc.add_category("tools", {
 			comp[e].count = groupcount
 			comp[e].group = group
 			comp[e].mintime = mintime
-			if realuses ~= nil then
+			if realuses then
 				comp[e].uses = realuses
 			elseif type(entries[e].data.def._doc_items_durability) == "number" then
 				comp[e].uses = entries[e].data.def._doc_items_durability
@@ -1166,9 +1166,9 @@ local function gather_descs()
 	-- 1st pass: Gather groups of interest
 	for id, def in pairs(minetest.registered_items) do
 		-- Gather all groups used for mining
-		if def.tool_capabilities ~= nil then
+		if def.tool_capabilities then
 			local groupcaps = def.tool_capabilities.groupcaps
-			if groupcaps ~= nil then
+			if groupcaps then
 				for k,v in pairs(groupcaps) do
 					if mininggroups[k] ~= true then
 						mininggroups[k] = true
@@ -1179,7 +1179,7 @@ local function gather_descs()
 
 		-- ... and gather all groups which appear in crafting recipes
 		local crafts = minetest.get_all_craft_recipes(id)
-		if crafts ~= nil then
+		if crafts then
 			for c=1,#crafts do
 				for k,v in pairs(crafts[c].items) do
 					if string.sub(v,1,6) == "group:" then
@@ -1194,7 +1194,7 @@ local function gather_descs()
 		end
 
 		-- ... and gather all groups used in connects_to
-		if def.connects_to ~= nil then
+		if def.connects_to then
 			for c=1, #def.connects_to do
 				if string.sub(def.connects_to[c],1,6) == "group:" then
 					local group = string.sub(def.connects_to[c],7,-1)
@@ -1213,7 +1213,7 @@ local function gather_descs()
 	else
 		help.longdesc["air"] = S("A transparent block, basically empty space. It is usually left behind after digging something.")
 	end
-	if minetest.registered_items["ignore"]._doc_items_create_entry ~= nil then
+	if minetest.registered_items["ignore"]._doc_items_create_entry then
 		suppressed["ignore"] = minetest.registered_items["ignore"]._doc_items_create_entry == true
 	end
 
@@ -1246,19 +1246,19 @@ local function gather_descs()
 		for id, def in pairs(deftable) do
 			local name, ld, uh, im
 			local forced = false
-			if def._doc_items_create_entry == true and def ~= nil then forced = true end
+			if def._doc_items_create_entry == true and def then forced = true end
 			name = get_entry_name(id)
 			if not (((def.description == nil or def.description == "") and def._doc_items_entry_name == nil) or (def._doc_items_create_entry == false) or (suppressed[id] == true)) or forced then
 				if def._doc_items_longdesc then
 					ld = def._doc_items_longdesc
 				end
-				if help.longdesc[id] ~= nil then
+				if help.longdesc[id] then
 					ld = help.longdesc[id]
 				end
 				if def._doc_items_usagehelp then
 					uh = def._doc_items_usagehelp
 				end
-				if help.usagehelp[id] ~= nil then
+				if help.usagehelp[id] then
 					uh = help.usagehelp[id]
 				end
 				if def._doc_items_image then
@@ -1307,13 +1307,13 @@ local function reveal_item(playername, itemstring)
 	if itemstring == nil or itemstring == "" or playername == nil or playername == "" then
 		return false
 	end
-	if minetest.registered_nodes[itemstring] ~= nil then
+	if minetest.registered_nodes[itemstring] then
 		category_id = "nodes"
-	elseif minetest.registered_tools[itemstring] ~= nil then
+	elseif minetest.registered_tools[itemstring] then
 		category_id = "tools"
-	elseif minetest.registered_craftitems[itemstring] ~= nil then
+	elseif minetest.registered_craftitems[itemstring] then
 		category_id = "craftitems"
-	elseif minetest.registered_items[itemstring] ~= nil then
+	elseif minetest.registered_items[itemstring] then
 		category_id = "craftitems"
 	else
 		return false
@@ -1333,7 +1333,7 @@ end
 minetest.register_on_dignode(function(pos, oldnode, digger)
 	if digger == nil then return end
 	local playername = digger:get_player_name()
-	if playername ~= nil and playername ~= "" and oldnode ~= nil then
+	if playername and playername ~= "" and oldnode then
 		reveal_item(playername, oldnode.name)
 		reveal_items_in_inventory(digger)
 	end
@@ -1342,7 +1342,7 @@ end)
 minetest.register_on_punchnode(function(pos, node, puncher, pointed_thing)
 	if puncher == nil then return end
 	local playername = puncher:get_player_name()
-	if playername ~= nil and playername ~= "" and node ~= nil then
+	if playername and playername ~= "" and node then
 		reveal_item(playername, node.name)
 	end
 end)
@@ -1350,7 +1350,7 @@ end)
 minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack, pointed_thing)
 	if placer == nil then return end
 	local playername = placer:get_player_name()
-	if playername ~= nil and playername ~= "" and itemstack ~= nil and not itemstack:is_empty() then
+	if playername and playername ~= "" and itemstack and not itemstack:is_empty() then
 		reveal_item(playername, itemstack:get_name())
 	end
 end)
@@ -1358,7 +1358,7 @@ end)
 minetest.register_on_craft(function(itemstack, player, old_craft_grid, craft_inv)
 	if player == nil then return end
 	local playername = player:get_player_name()
-	if playername ~= nil and playername ~= "" and itemstack ~= nil and not itemstack:is_empty() then
+	if playername and playername ~= "" and itemstack and not itemstack:is_empty() then
 		reveal_item(playername, itemstack:get_name())
 	end
 end)
@@ -1370,7 +1370,7 @@ minetest.register_on_player_inventory_action(function(player, action, inventory,
 	if action == "take" or action == "put" then
 		itemstack = inventory_info.stack
 	end
-	if itemstack ~= nil and playername ~= nil and playername ~= "" and (not itemstack:is_empty()) then
+	if itemstack and playername and playername ~= "" and (not itemstack:is_empty()) then
 		reveal_item(playername, itemstack:get_name())
 	end
 end)
@@ -1378,9 +1378,9 @@ end)
 minetest.register_on_item_eat(function(hp_change, replace_with_item, itemstack, user, pointed_thing)
 	if user == nil then return end
 	local playername = user:get_player_name()
-	if playername ~= nil and playername ~= "" and itemstack ~= nil and not itemstack:is_empty() then
+	if playername and playername ~= "" and itemstack and not itemstack:is_empty() then
 		reveal_item(playername, itemstack:get_name())
-		if replace_with_item ~= nil then
+		if replace_with_item then
 			reveal_item(playername, replace_with_item)
 		end
 	end
@@ -1390,10 +1390,12 @@ minetest.register_on_joinplayer(function(player)
 	reveal_items_in_inventory(player)
 end)
 
---[[ Periodically check all items in player inventory and reveal them all.
+--[[
+Periodically check all items in player inventory and reveal them all.
 TODO: Check whether there's a serious performance impact on servers with many players.
-TODO: If possible, try to replace this functionality by updating the revealed items as
-      soon the player obtained a new item (probably needs new Minetest callbacks). ]]
+TODO: If possible, try to replace this functionality by updating the revealed items as soon the player obtained a new item (probably needs new Minetest callbacks).
+]]
+
 local checktime = 8
 local timer = 0
 minetest.register_globalstep(function(dtime)

mods/HELP/mcl_doc/init.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_doc")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- Disable built-in factoids; it is planned to add custom ones as replacements
 doc.sub.items.disable_core_factoid("node_mining")
@@ -50,8 +50,8 @@ end)
 
 doc.sub.items.register_factoid("nodes", "groups", function(itemstring, def)
 	local formstring = ""
-	if def.groups.leafdecay ~= nil then
-		if def.drop ~= "" and def.drop ~= nil and def.drop ~= itemstring then
+	if def.groups.leafdecay then
+		if def.drop ~= "" and def.drop and def.drop ~= itemstring then
 			formstring = S("This block quickly decays when there is no wood block of any species within a distance of @1. When decaying, it disappears and may drop one of its regular drops. The block does not decay when the block has been placed by a player.", def.groups.leafdecay)
 		else
 			formstring = S("This block quickly decays and disappears when there is no wood block of any species within a distance of @1. The block does not decay when the block has been placed by a player.", def.groups.leafdecay)
@@ -399,7 +399,7 @@ doc.sub.items.register_factoid("tools", "misc", function(itemstring, def)
 	local formstring = ""
 	-- Weapon data
 	local damage_groups = tool_capabilities.damage_groups
-	if damage_groups ~= nil and damage_groups.fleshy ~= nil then
+	if damage_groups and damage_groups.fleshy then
 		formstring = formstring .. S("This is a melee weapon which deals damage by punching.") .. "\n"
 
 		-- Damage groups
@@ -408,7 +408,7 @@ doc.sub.items.register_factoid("tools", "misc", function(itemstring, def)
 
 		-- Full punch interval
 		local punch = 1.0
-		if tool_capabilities.full_punch_interval ~= nil then
+		if tool_capabilities.full_punch_interval then
 			punch = tool_capabilities.full_punch_interval
 		end
 		formstring = formstring .. S("Full punch interval: @1 s", string.format("%.1f", punch))

mods/HELP/mcl_doc_basics/init.lua

@@ -2,7 +2,7 @@
 Basic help for MCL2. Fork of doc_basics
 ]]
 
-local S = minetest.get_translator("mcl_doc_basics")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 doc.add_category("basics",
 {

mods/HELP/mcl_doc_basics/mcl_extension.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_doc_basics")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 doc.add_entry("advanced", "creative", {
 	name = S("Creative Mode"),

mods/HELP/mcl_tt/init.lua

@@ -1,2 +1,4 @@
-dofile(minetest.get_modpath("mcl_tt").."/snippets_base.lua")
-dofile(minetest.get_modpath("mcl_tt").."/snippets_mcl.lua")
+local modpath = minetest.get_modpath(minetest.get_current_modname())
+
+dofile(modpath.."/snippets_base.lua")
+dofile(modpath.."/snippets_mcl.lua")

mods/HELP/mcl_tt/snippets_base.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_tt")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 --[[local function get_min_digtime(caps)
 	local mintime

mods/HELP/mcl_tt/snippets_mcl.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_tt")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- Armor
 tt.register_snippet(function(itemstring)

mods/HELP/tt/init.lua

@@ -43,7 +43,7 @@ local function apply_snippets(desc, itemstring, toolcaps, itemstack)
 end
 
 local function should_change(itemstring, def)
-	return itemstring ~= "" and itemstring ~= "air" and itemstring ~= "ignore" and itemstring ~= "unknown" and def ~= nil and def.description ~= nil and def.description ~= "" and def._tt_ignore ~= true
+	return itemstring ~= "" and itemstring ~= "air" and itemstring ~= "ignore" and itemstring ~= "unknown" and def and def.description and def.description ~= "" and def._tt_ignore ~= true
 end
 
 local function append_snippets()

mods/HUD/awards/api.lua

@@ -14,11 +14,16 @@
 -- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 --
 
+local modname = minetest.get_current_modname()
+local modpath = minetest.get_modpath(modname)
+local S = minetest.get_translator(modname)
+
 -- The global award namespace
 awards = {
-	show_mode = "hud"
+	show_mode = "hud",
 }
-dofile(minetest.get_modpath("awards").."/api_helpers.lua")
+
+dofile(modpath.."/api_helpers.lua")
 
 -- Table Save Load Functions
 function awards.save()
@@ -29,8 +34,6 @@ function awards.save()
 	end
 end
 
-local S = minetest.get_translator("awards")
-
 function awards.init()
 	awards.players = awards.load()
 	awards.def = {}
@@ -53,7 +56,7 @@ end
 function awards.register_trigger(name, func)
 	awards.trigger_types[name] = func
 	awards.on[name] = {}
-	awards['register_on_'..name] = function(func)
+	awards["register_on_"..name] = function(func)
 		table.insert(awards.on[name], func)
 	end
 end

mods/HUD/awards/chat_commands.lua

@@ -14,7 +14,7 @@
 -- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 --
 
-local S = minetest.get_translator("awards")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 minetest.register_chatcommand("awards", {
 	params = S("[c|clear|disable|enable]"),

mods/HUD/awards/init.lua

@@ -14,9 +14,11 @@
 -- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 --
 
-dofile(minetest.get_modpath("awards").."/api.lua")
-dofile(minetest.get_modpath("awards").."/chat_commands.lua")
-dofile(minetest.get_modpath("awards").."/sfinv.lua")
-dofile(minetest.get_modpath("awards").."/unified_inventory.lua")
-dofile(minetest.get_modpath("awards").."/triggers.lua")
+local modpath = minetest.get_modpath(minetest.get_current_modname())
+
+dofile(modpath.."/api.lua")
+dofile(modpath.."/chat_commands.lua")
+dofile(modpath.."/sfinv.lua")
+dofile(modpath.."/unified_inventory.lua")
+dofile(modpath.."/triggers.lua")
 

mods/HUD/awards/sfinv.lua

@@ -1,5 +1,5 @@
 if minetest.get_modpath("sfinv") then
-	local S = minetest.get_translator("awards")
+	local S = minetest.get_translator(minetest.get_current_modname())
 
 	sfinv.register_page("awards:awards", {
 		title = S("Awards"),

mods/HUD/awards/triggers.lua

@@ -14,7 +14,7 @@
 -- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 --
 
-local S = minetest.get_translator("awards")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 awards.register_trigger("dig", function(def)
 	local tmp = {
@@ -382,7 +382,7 @@ end)
 minetest.register_on_chat_message(function(name, message)
 	-- Run checks
 	local idx = string.find(message,"/")
-	if not name or (idx ~= nil and idx <= 1)  then
+	if not name or (idx and idx <= 1)  then
 		return
 	end
 

mods/HUD/hudbars/default_settings.lua

@@ -37,7 +37,7 @@ hb.settings.alignment_pattern = hb.load_setting("hudbars_alignment_pattern", "st
 hb.settings.autohide_breath = hb.load_setting("hudbars_autohide_breath", "bool", true)
 
 local sorting = minetest.settings:get("hudbars_sorting")
-if sorting ~= nil then
+if sorting then
 	hb.settings.sorting = {}
 	hb.settings.sorting_reverse = {}
 	for k,v in string.gmatch(sorting, "(%w+)=(%w+)") do

mods/HUD/hudbars/init.lua

@@ -27,10 +27,10 @@ function hb.load_setting(sname, stype, defaultval, valid_values)
 	elseif stype == "number" then
 		sval = tonumber(minetest.settings:get(sname))
 	end
-	if sval ~= nil then
-		if valid_values ~= nil then
+	if sval then
+		if valid_values then
 			local valid = false
-			for i=1,#valid_values do
+			for i = 1, #valid_values do
 				if sval == valid_values[i] then
 					valid = true
 				end
@@ -114,7 +114,7 @@ function hb.get_hudtable(identifier)
 end
 
 function hb.get_hudbar_position_index(identifier)
-	if hb.settings.sorting[identifier] ~= nil then
+	if hb.settings.sorting[identifier] then
 		return hb.settings.sorting[identifier]
 	else
 		local i = 0
@@ -215,7 +215,7 @@ function hb.register_hudbar(identifier, text_color, label, textures, direction,
 				offset = { x = offset.x - 1, y = offset.y - 1 },
 				z_index = 0,
 			})
-			if textures.icon ~= nil then
+			if textures.icon then
 				ids.icon = player:hud_add({
 					hud_elem_type = "image",
 					position = pos,
@@ -335,7 +335,7 @@ function hb.change_hudbar(player, identifier, new_value, new_max_value, new_icon
 	end
 	local value_changed, max_changed = false, false
 
-	if new_value ~= nil then
+	if new_value then
 		if new_value ~= hudtable.hudstate[name].value then
 			hudtable.hudstate[name].value = new_value
 			value_changed = true
@@ -343,7 +343,7 @@ function hb.change_hudbar(player, identifier, new_value, new_max_value, new_icon
 	else
 		new_value = hudtable.hudstate[name].value
 	end
-	if new_max_value ~= nil then
+	if new_max_value then
 		if new_max_value ~= hudtable.hudstate[name].max then
 			hudtable.hudstate[name].max = new_max_value
 			max_changed = true
@@ -353,29 +353,29 @@ function hb.change_hudbar(player, identifier, new_value, new_max_value, new_icon
 	end
 
 	if hb.settings.bar_type == "progress_bar" then
-		if new_icon ~= nil and hudtable.hudids[name].icon ~= nil then
+		if new_icon and hudtable.hudids[name].icon then
 			player:hud_change(hudtable.hudids[name].icon, "text", new_icon)
 		end
-		if new_bgicon ~= nil and hudtable.hudids[name].bgicon ~= nil then
+		if new_bgicon and hudtable.hudids[name].bgicon then
 			player:hud_change(hudtable.hudids[name].bgicon, "text", new_bgicon)
 		end
-		if new_bar ~= nil then
+		if new_bar then
 			player:hud_change(hudtable.hudids[name].bar , "text", new_bar)
 		end
-		if new_label ~= nil then
+		if new_label then
 			hudtable.label = new_label
 			local new_text = make_label(hudtable.format_string, hudtable.format_string_config, new_label, hudtable.hudstate[name].value, hudtable.hudstate[name].max)
 			player:hud_change(hudtable.hudids[name].text, "text", new_text)
 		end
-		if new_text_color ~= nil then
+		if new_text_color then
 			player:hud_change(hudtable.hudids[name].text, "number", new_text_color)
 		end
 
 	else
-		if new_icon ~= nil and hudtable.hudids[name].bar ~= nil then
+		if new_icon and hudtable.hudids[name].bar then
 			player:hud_change(hudtable.hudids[name].bar, "text", new_icon)
 		end
-		if new_bgicon ~= nil and hudtable.hudids[name].bg ~= nil then
+		if new_bgicon and hudtable.hudids[name].bg then
 			player:hud_change(hudtable.hudids[name].bg, "text", new_bgicon)
 		end
 	end
@@ -426,7 +426,7 @@ function hb.hide_hudbar(player, identifier)
 	local hudtable = hb.get_hudtable(identifier)
 	if hudtable == nil then return false end
 	if hb.settings.bar_type == "progress_bar" then
-		if hudtable.hudids[name].icon ~= nil then
+		if hudtable.hudids[name].icon then
 			player:hud_change(hudtable.hudids[name].icon, "scale", {x=0,y=0})
 		end
 		player:hud_change(hudtable.hudids[name].bg, "scale", {x=0,y=0})
@@ -446,7 +446,7 @@ function hb.unhide_hudbar(player, identifier)
 	local value = hudtable.hudstate[name].value
 	local max = hudtable.hudstate[name].max
 	if hb.settings.bar_type == "progress_bar" then
-		if hudtable.hudids[name].icon ~= nil then
+		if hudtable.hudids[name].icon then
 			player:hud_change(hudtable.hudids[name].icon, "scale", {x=1,y=1})
 		end
 		if hudtable.hudstate[name].max ~= 0 then
@@ -548,7 +548,7 @@ local function update_hud(player, has_damage)
 end
 
 minetest.register_on_player_hpchange(function(player)
-	if hb.players[player:get_player_name()] ~= nil then
+	if hb.players[player:get_player_name()] then
 		update_health(player)
 	end
 end)

mods/HUD/mcl_achievements/init.lua

@@ -3,7 +3,7 @@
 -- If true, activates achievements from other Minecraft editions (XBox, PS, etc.)
 local non_pc_achievements = false
 
-local S = minetest.get_translator("mcl_achievements")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- Achievements from PC Edition
 

mods/HUD/mcl_death_messages/init.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_death_messages")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mcl_death_messages = {
 	assist = {},

mods/HUD/mcl_experience/init.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_experience")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mcl_experience = {}
 

mods/HUD/mcl_hbarmor/init.lua

@@ -19,7 +19,7 @@ local mcl_hbarmor = {
 
 local tick_config = minetest.settings:get("mcl_hbarmor_tick")
 
-if tonumber(tick_config) ~= nil then
+if tonumber(tick_config) then
 	mcl_hbarmor.tick = tonumber(tick_config)
 end
 

mods/HUD/mcl_inventory/creative.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_inventory")
+local S = minetest.get_translator(minetest.get_current_modname())
 local F = minetest.formspec_escape
 
 -- Prepare player info table
@@ -7,7 +7,7 @@ local players = {}
 -- Containing all the items for each Creative Mode tab
 local inventory_lists = {}
 
---local mod_player = minetest.get_modpath("mcl_player") ~= nil
+--local mod_player = minetest.get_modpath("mcl_player")
 
 -- Create tables
 local builtin_filter_ids = {"blocks","deco","redstone","rail","food","tools","combat","mobs","brew","matr","misc","all"}
@@ -37,7 +37,7 @@ do
 				return def.mesecons or def.groups.mesecon or def.groups.mesecon_conductor_craftable or def.groups.mesecon_effecor_off
 			end
 			local function is_tool(def)
-				return def.groups.tool or (def.tool_capabilities ~= nil and def.tool_capabilities.damage_groups == nil)
+				return def.groups.tool or (def.tool_capabilities and def.tool_capabilities.damage_groups == nil)
 			end
 			local function is_weapon_or_armor(def)
 				return def.groups.weapon or def.groups.weapon_ranged or def.groups.ammo or def.groups.combat_item or ((def.groups.armor_head or def.groups.armor_torso or def.groups.armor_legs or def.groups.armor_feet or def.groups.horse_armor) and def.groups.non_combat_armor ~= 1)
@@ -301,7 +301,7 @@ function mcl_inventory.set_creative_formspec(player, start_i, pagenum, inv_size,
 		if page == "nix" then
 			local inv = minetest.get_inventory({type="detached", name="creative_"..playername})
 			inv_size = inv:get_size("main")
-		elseif page ~= nil and page ~= "inv" then
+		elseif page and page ~= "inv" then
 			inv_size = #(inventory_lists[page])
 		else
 			inv_size = 0
@@ -314,7 +314,7 @@ function mcl_inventory.set_creative_formspec(player, start_i, pagenum, inv_size,
 		"listring[current_player;main]"..
 		"listring[detached:trash;main]"
 
-	if page ~= nil then
+	if page then
 		name = page
 		if players[playername] then
 			players[playername].page = page
@@ -322,160 +322,158 @@ function mcl_inventory.set_creative_formspec(player, start_i, pagenum, inv_size,
 	end
 	--bg[name] = "crafting_creative_bg.png"
 
-		local inv_bg = "crafting_inventory_creative.png"
-		if name == "inv" then
-			inv_bg = "crafting_inventory_creative_survival.png"
+	local inv_bg = "crafting_inventory_creative.png"
+	if name == "inv" then
+		inv_bg = "crafting_inventory_creative_survival.png"
 
-			-- Show armor and player image
-			local player_preview
-			if minetest.settings:get_bool("3d_player_preview", true) then
-				player_preview = mcl_player.get_player_formspec_model(player, 3.9, 1.4, 1.2333, 2.4666, "")
-			else
-				player_preview = "image[3.9,1.4;1.2333,2.4666;"..mcl_player.player_get_preview(player).."]"
-			end
-
-			-- Background images for armor slots (hide if occupied)
-			local armor_slot_imgs = ""
-			local inv = player:get_inventory()
-			if inv:get_stack("armor", 2):is_empty() then
-				armor_slot_imgs = armor_slot_imgs .. "image[2.5,1.3;1,1;mcl_inventory_empty_armor_slot_helmet.png]"
-			end
-			if inv:get_stack("armor", 3):is_empty() then
-				armor_slot_imgs = armor_slot_imgs .. "image[2.5,2.75;1,1;mcl_inventory_empty_armor_slot_chestplate.png]"
-			end
-			if inv:get_stack("armor", 4):is_empty() then
-				armor_slot_imgs = armor_slot_imgs .. "image[5.5,1.3;1,1;mcl_inventory_empty_armor_slot_leggings.png]"
-			end
-			if inv:get_stack("armor", 5):is_empty() then
-				armor_slot_imgs = armor_slot_imgs .. "image[5.5,2.75;1,1;mcl_inventory_empty_armor_slot_boots.png]"
-			end
-
-			-- Survival inventory slots
-			main_list = "list[current_player;main;0,3.75;9,3;9]"..
-				mcl_formspec.get_itemslot_bg(0,3.75,9,3)..
-				-- armor
-				"list[current_player;armor;2.5,1.3;1,1;1]"..
-				"list[current_player;armor;2.5,2.75;1,1;2]"..
-				"list[current_player;armor;5.5,1.3;1,1;3]"..
-				"list[current_player;armor;5.5,2.75;1,1;4]"..
-				mcl_formspec.get_itemslot_bg(2.5,1.3,1,1)..
-				mcl_formspec.get_itemslot_bg(2.5,2.75,1,1)..
-				mcl_formspec.get_itemslot_bg(5.5,1.3,1,1)..
-				mcl_formspec.get_itemslot_bg(5.5,2.75,1,1)..
-				armor_slot_imgs..
-				-- player preview
-				player_preview..
-				-- crafting guide button
-				"image_button[9,1;1,1;craftguide_book.png;__mcl_craftguide;]"..
-				"tooltip[__mcl_craftguide;"..F(S("Recipe book")).."]"..
-				-- help button
-				"image_button[9,2;1,1;doc_button_icon_lores.png;__mcl_doc;]"..
-				"tooltip[__mcl_doc;"..F(S("Help")).."]"..
-				-- skins button
-				"image_button[9,3;1,1;mcl_skins_button.png;__mcl_skins;]"..
-				"tooltip[__mcl_skins;"..F(S("Select player skin")).."]"..
-				-- achievements button
-				"image_button[9,4;1,1;mcl_achievements_button.png;__mcl_achievements;]"..
-				--"style_type[image_button;border=;bgimg=;bgimg_pressed=]"..
-				"tooltip[__mcl_achievements;"..F(S("Achievements")).."]"
-
-			-- For shortcuts
-			listrings = listrings ..
-				"listring[detached:"..playername.."_armor;armor]"..
-				"listring[current_player;main]"
+		-- Show armor and player image
+		local player_preview
+		if minetest.settings:get_bool("3d_player_preview", true) then
+			player_preview = mcl_player.get_player_formspec_model(player, 3.9, 1.4, 1.2333, 2.4666, "")
 		else
-			-- Creative inventory slots
-			main_list = "list[detached:creative_"..playername..";main;0,1.75;9,5;"..tostring(start_i).."]"..
-				mcl_formspec.get_itemslot_bg(0,1.75,9,5)..
-			-- Page buttons
-				"label[9.0,5.5;"..F(S("@1/@2", pagenum, pagemax)).."]"..
-				"image_button[9.0,6.0;0.7,0.7;crafting_creative_prev.png;creative_prev;]"..
-				"image_button[9.5,6.0;0.7,0.7;crafting_creative_next.png;creative_next;]"
+			player_preview = "image[3.9,1.4;1.2333,2.4666;"..mcl_player.player_get_preview(player).."]"
 		end
 
-		local tab_icon = {
-			blocks = "mcl_core:brick_block",
-			deco = "mcl_flowers:peony",
-			redstone = "mesecons:redstone",
-			rail = "mcl_minecarts:golden_rail",
-			misc = "mcl_buckets:bucket_lava",
-			nix = "mcl_compass:compass",
-			food = "mcl_core:apple",
-			tools = "mcl_core:axe_iron",
-			combat = "mcl_core:sword_gold",
-			mobs = "mobs_mc:cow",
-			brew = "mcl_potions:dragon_breath",
-			matr = "mcl_core:stick",
-			inv = "mcl_chests:chest",
-		}
-		local function tab(current_tab, this_tab)
-			local bg_img
-			if current_tab == this_tab then
-				bg_img = "crafting_creative_active"..hoch[this_tab]..".png"
-			else
-				bg_img = "crafting_creative_inactive"..hoch[this_tab]..".png"
-			end
-			return
-				"style["..this_tab..";border=false;bgimg=;bgimg_pressed=]"..
-				"item_image_button[" .. boffset[this_tab] ..";1,1;"..tab_icon[this_tab]..";"..this_tab..";]"..
-				"image[" .. offset[this_tab] .. ";1.5,1.44;" .. bg_img .. "]" ..
-				"image[" .. boffset[this_tab] .. ";1,1;crafting_creative_marker.png]"
+		-- Background images for armor slots (hide if occupied)
+		local armor_slot_imgs = ""
+		local inv = player:get_inventory()
+		if inv:get_stack("armor", 2):is_empty() then
+			armor_slot_imgs = armor_slot_imgs .. "image[2.5,1.3;1,1;mcl_inventory_empty_armor_slot_helmet.png]"
 		end
-		local caption = ""
-		if name ~= "inv" and filtername[name] then
-			caption = "label[0,1.2;"..F(minetest.colorize("#313131", filtername[name])).."]"
+		if inv:get_stack("armor", 3):is_empty() then
+			armor_slot_imgs = armor_slot_imgs .. "image[2.5,2.75;1,1;mcl_inventory_empty_armor_slot_chestplate.png]"
+		end
+		if inv:get_stack("armor", 4):is_empty() then
+			armor_slot_imgs = armor_slot_imgs .. "image[5.5,1.3;1,1;mcl_inventory_empty_armor_slot_leggings.png]"
+		end
+		if inv:get_stack("armor", 5):is_empty() then
+			armor_slot_imgs = armor_slot_imgs .. "image[5.5,2.75;1,1;mcl_inventory_empty_armor_slot_boots.png]"
 		end
 
-		local formspec = "size[10,9.3]"..
-			"no_prepend[]"..
-			mcl_vars.gui_nonbg..mcl_vars.gui_bg_color..
-			"background[-0.19,-0.25;10.5,9.87;"..inv_bg.."]"..
-			"label[-5,-5;"..name.."]"..
-			tab(name, "blocks") ..
-			"tooltip[blocks;"..F(filtername["blocks"]).."]"..
-			tab(name, "deco") ..
-			"tooltip[deco;"..F(filtername["deco"]).."]"..
-			tab(name, "redstone") ..
-			"tooltip[redstone;"..F(filtername["redstone"]).."]"..
-			tab(name, "rail") ..
-			"tooltip[rail;"..F(filtername["rail"]).."]"..
-			tab(name, "misc") ..
-			"tooltip[misc;"..F(filtername["misc"]).."]"..
-			tab(name, "nix") ..
-			"tooltip[nix;"..F(filtername["nix"]).."]"..
-			caption..
-			"list[current_player;main;0,7;9,1;]"..
-			mcl_formspec.get_itemslot_bg(0,7,9,1)..
-			main_list..
-			tab(name, "food") ..
-			"tooltip[food;"..F(filtername["food"]).."]"..
-			tab(name, "tools") ..
-			"tooltip[tools;"..F(filtername["tools"]).."]"..
-			tab(name, "combat") ..
-			"tooltip[combat;"..F(filtername["combat"]).."]"..
-			tab(name, "mobs") ..
-			"tooltip[mobs;"..F(filtername["mobs"]).."]"..
-			tab(name, "brew") ..
-			"tooltip[brew;"..F(filtername["brew"]).."]"..
-			tab(name, "matr") ..
-			"tooltip[matr;"..F(filtername["matr"]).."]"..
-			tab(name, "inv") ..
-			"tooltip[inv;"..F(filtername["inv"]).."]"..
-			"list[detached:trash;main;9,7;1,1;]"..
-			mcl_formspec.get_itemslot_bg(9,7,1,1)..
-			"image[9,7;1,1;crafting_creative_trash.png]"..
-			listrings
+		-- Survival inventory slots
+		main_list = "list[current_player;main;0,3.75;9,3;9]"..
+			mcl_formspec.get_itemslot_bg(0,3.75,9,3)..
+			-- armor
+			"list[current_player;armor;2.5,1.3;1,1;1]"..
+			"list[current_player;armor;2.5,2.75;1,1;2]"..
+			"list[current_player;armor;5.5,1.3;1,1;3]"..
+			"list[current_player;armor;5.5,2.75;1,1;4]"..
+			mcl_formspec.get_itemslot_bg(2.5,1.3,1,1)..
+			mcl_formspec.get_itemslot_bg(2.5,2.75,1,1)..
+			mcl_formspec.get_itemslot_bg(5.5,1.3,1,1)..
+			mcl_formspec.get_itemslot_bg(5.5,2.75,1,1)..
+			armor_slot_imgs..
+			-- player preview
+			player_preview..
+			-- crafting guide button
+			"image_button[9,1;1,1;craftguide_book.png;__mcl_craftguide;]"..
+			"tooltip[__mcl_craftguide;"..F(S("Recipe book")).."]"..
+			-- help button
+			"image_button[9,2;1,1;doc_button_icon_lores.png;__mcl_doc;]"..
+			"tooltip[__mcl_doc;"..F(S("Help")).."]"..
+			-- skins button
+			"image_button[9,3;1,1;mcl_skins_button.png;__mcl_skins;]"..
+			"tooltip[__mcl_skins;"..F(S("Select player skin")).."]"..
+			-- achievements button
+			"image_button[9,4;1,1;mcl_achievements_button.png;__mcl_achievements;]"..
+			--"style_type[image_button;border=;bgimg=;bgimg_pressed=]"..
+			"tooltip[__mcl_achievements;"..F(S("Achievements")).."]"
 
-			if name == "nix" then
-				if filter == nil then
-					filter = ""
-				end
-				formspec = formspec .. "field[5.3,1.34;4,0.75;search;;"..minetest.formspec_escape(filter).."]"
-				formspec = formspec .. "field_close_on_enter[search;false]"
-			end
-			if pagenum ~= nil then formspec = formspec .. "p"..tostring(pagenum) end
+		-- For shortcuts
+		listrings = listrings ..
+			"listring[detached:"..playername.."_armor;armor]"..
+			"listring[current_player;main]"
+	else
+		-- Creative inventory slots
+		main_list = "list[detached:creative_"..playername..";main;0,1.75;9,5;"..tostring(start_i).."]"..
+			mcl_formspec.get_itemslot_bg(0,1.75,9,5)..
+		-- Page buttons
+			"label[9.0,5.5;"..F(S("@1/@2", pagenum, pagemax)).."]"..
+			"image_button[9.0,6.0;0.7,0.7;crafting_creative_prev.png;creative_prev;]"..
+			"image_button[9.5,6.0;0.7,0.7;crafting_creative_next.png;creative_next;]"
+	end
 
+	local tab_icon = {
+		blocks = "mcl_core:brick_block",
+		deco = "mcl_flowers:peony",
+		redstone = "mesecons:redstone",
+		rail = "mcl_minecarts:golden_rail",
+		misc = "mcl_buckets:bucket_lava",
+		nix = "mcl_compass:compass",
+		food = "mcl_core:apple",
+		tools = "mcl_core:axe_iron",
+		combat = "mcl_core:sword_gold",
+		mobs = "mobs_mc:cow",
+		brew = "mcl_potions:dragon_breath",
+		matr = "mcl_core:stick",
+		inv = "mcl_chests:chest",
+	}
+	local function tab(current_tab, this_tab)
+		local bg_img
+		if current_tab == this_tab then
+			bg_img = "crafting_creative_active"..hoch[this_tab]..".png"
+		else
+			bg_img = "crafting_creative_inactive"..hoch[this_tab]..".png"
+		end
+		return
+			"style["..this_tab..";border=false;bgimg=;bgimg_pressed=]"..
+			"item_image_button[" .. boffset[this_tab] ..";1,1;"..tab_icon[this_tab]..";"..this_tab..";]"..
+			"image[" .. offset[this_tab] .. ";1.5,1.44;" .. bg_img .. "]" ..
+			"image[" .. boffset[this_tab] .. ";1,1;crafting_creative_marker.png]"
+	end
+	local caption = ""
+	if name ~= "inv" and filtername[name] then
+		caption = "label[0,1.2;"..F(minetest.colorize("#313131", filtername[name])).."]"
+	end
 
+	local formspec = "size[10,9.3]"..
+		"no_prepend[]"..
+		mcl_vars.gui_nonbg..mcl_vars.gui_bg_color..
+		"background[-0.19,-0.25;10.5,9.87;"..inv_bg.."]"..
+		"label[-5,-5;"..name.."]"..
+		tab(name, "blocks") ..
+		"tooltip[blocks;"..F(filtername["blocks"]).."]"..
+		tab(name, "deco") ..
+		"tooltip[deco;"..F(filtername["deco"]).."]"..
+		tab(name, "redstone") ..
+		"tooltip[redstone;"..F(filtername["redstone"]).."]"..
+		tab(name, "rail") ..
+		"tooltip[rail;"..F(filtername["rail"]).."]"..
+		tab(name, "misc") ..
+		"tooltip[misc;"..F(filtername["misc"]).."]"..
+		tab(name, "nix") ..
+		"tooltip[nix;"..F(filtername["nix"]).."]"..
+		caption..
+		"list[current_player;main;0,7;9,1;]"..
+		mcl_formspec.get_itemslot_bg(0,7,9,1)..
+		main_list..
+		tab(name, "food") ..
+		"tooltip[food;"..F(filtername["food"]).."]"..
+		tab(name, "tools") ..
+		"tooltip[tools;"..F(filtername["tools"]).."]"..
+		tab(name, "combat") ..
+		"tooltip[combat;"..F(filtername["combat"]).."]"..
+		tab(name, "mobs") ..
+		"tooltip[mobs;"..F(filtername["mobs"]).."]"..
+		tab(name, "brew") ..
+		"tooltip[brew;"..F(filtername["brew"]).."]"..
+		tab(name, "matr") ..
+		"tooltip[matr;"..F(filtername["matr"]).."]"..
+		tab(name, "inv") ..
+		"tooltip[inv;"..F(filtername["inv"]).."]"..
+		"list[detached:trash;main;9,7;1,1;]"..
+		mcl_formspec.get_itemslot_bg(9,7,1,1)..
+		"image[9,7;1,1;crafting_creative_trash.png]"..
+		listrings
+
+	if name == "nix" then
+		if filter == nil then
+			filter = ""
+		end
+		formspec = formspec .. "field[5.3,1.34;4,0.75;search;;"..minetest.formspec_escape(filter).."]"
+		formspec = formspec .. "field_close_on_enter[search;false]"
+	end
+	if pagenum then formspec = formspec .. "p"..tostring(pagenum) end
 	player:set_inventory_formspec(formspec)
 end
 
@@ -545,7 +543,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	elseif fields.search == "" and not fields.creative_next and not fields.creative_prev then
 		set_inv_page("all", player)
 		page = "nix"
-	elseif fields.search ~= nil and not fields.creative_next and not fields.creative_prev then
+	elseif fields.search and not fields.creative_next and not fields.creative_prev then
 		set_inv_search(string.lower(fields.search),player)
 		page = "nix"
 	end
@@ -578,7 +576,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	if page == "nix" then
 		local inv = minetest.get_inventory({type="detached", name="creative_"..name})
 		inv_size = inv:get_size("main")
-	elseif page ~= nil and page ~= "inv" then
+	elseif page and page ~= "inv" then
 		inv_size = #(inventory_lists[page])
 	else
 		inv_size = 0
@@ -593,7 +591,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	players[name].start_i = start_i
 
 	local filter = ""
-	if not fields.nix and fields.search ~= nil and fields.search ~= "" then
+	if not fields.nix and fields.search and fields.search ~= "" then
 		filter = fields.search
 		players[name].filter = filter
 	end
@@ -644,7 +642,7 @@ if minetest.is_creative_enabled("") then
 		if page == "nix" then
 			local inv = minetest.get_inventory({type="detached", name="creative_"..name})
 			inv_size = inv:get_size("main")
-		elseif page ~= nil and page ~= "inv" then
+		elseif page and page ~= "inv" then
 			inv_size = #(inventory_lists[page])
 		else
 			inv_size = 0

mods/HUD/mcl_inventory/init.lua

@@ -1,10 +1,10 @@
-local S = minetest.get_translator("mcl_inventory")
+local S = minetest.get_translator(minetest.get_current_modname())
 local F = minetest.formspec_escape
 
 mcl_inventory = {}
 
---local mod_player = minetest.get_modpath("mcl_player") ~= nil
---local mod_craftguide = minetest.get_modpath("mcl_craftguide") ~= nil
+--local mod_player = minetest.get_modpath("mcl_player")
+--local mod_craftguide = minetest.get_modpath("mcl_craftguide")
 
 -- Returns a single itemstack in the given inventory to the main inventory, or drop it when there's no space left
 function return_item(itemstack, dropper, pos, inv)

mods/HUD/show_wielded_item/init.lua

@@ -6,6 +6,10 @@ local huds = {}
 local dtimes = {}
 local dlimit = 3  -- HUD element will be hidden after this many seconds
 
+local math = math
+local string = string
+local tonumber = tonumber
+
 local hudbars_mod = minetest.get_modpath("hudbars")
 local xp_mod = minetest.get_modpath("mcl_experience")
 
@@ -74,7 +78,7 @@ minetest.register_globalstep(function(dtime)
 		if dtimes[player_name] and dtimes[player_name] < dlimit then
 			dtimes[player_name] = dtimes[player_name] + dtime
 			if dtimes[player_name] > dlimit and huds[player_name] then
-				player:hud_change(huds[player_name], 'text', "")
+				player:hud_change(huds[player_name], "text", "")
 			end
 		end
 
@@ -105,7 +109,7 @@ minetest.register_globalstep(function(dtime)
 				if firstnewline then
 					desc = string.sub(desc, 1, firstnewline-1)
 				end
-				player:hud_change(huds[player_name], 'text', desc)
+				player:hud_change(huds[player_name], "text", desc)
 			end
 		end
 	end

mods/ITEMS/REDSTONE/mcl_comparators/init.lua

@@ -1,8 +1,8 @@
-local S = minetest.get_translator("mcl_comparators")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- Functions that get the input/output rules of the comparator
 
-local comparator_get_output_rules = function(node)
+local function comparator_get_output_rules(node)
 	local rules = {{x = -1, y = 0, z = 0, spread=true}}
 	for i = 0, node.param2 do
 		rules = mesecon.rotate_rules_left(rules)
@@ -11,7 +11,7 @@ local comparator_get_output_rules = function(node)
 end
 
 
-local comparator_get_input_rules = function(node)
+local function comparator_get_input_rules(node)
 	local rules = {
 		-- we rely on this order in update_self below
 		{x = 1, y = 0, z =  0},  -- back
@@ -27,13 +27,13 @@ end
 
 -- Functions that are called after the delay time
 
-local comparator_turnon = function(params)
+local function comparator_turnon(params)
 	local rules = comparator_get_output_rules(params.node)
 	mesecon.receptor_on(params.pos, rules)
 end
 
 
-local comparator_turnoff = function(params)
+local function comparator_turnoff(params)
 	local rules = comparator_get_output_rules(params.node)
 	mesecon.receptor_off(params.pos, rules)
 end
@@ -41,14 +41,14 @@ end
 
 -- Functions that set the correct node type an schedule a turnon/off
 
-local comparator_activate = function(pos, node)
+local function comparator_activate(pos, node)
 	local def = minetest.registered_nodes[node.name]
 	minetest.swap_node(pos, { name = def.comparator_onstate, param2 = node.param2 })
 	minetest.after(0.1, comparator_turnon , {pos = pos, node = node})
 end
 
 
-local comparator_deactivate = function(pos, node)
+local function comparator_deactivate(pos, node)
 	local def = minetest.registered_nodes[node.name]
 	minetest.swap_node(pos, { name = def.comparator_offstate, param2 = node.param2 })
 	minetest.after(0.1, comparator_turnoff, {pos = pos, node = node})
@@ -56,7 +56,7 @@ end
 
 
 -- weather pos has an inventory that contains at least one item
-local container_inventory_nonempty = function(pos)
+local function container_inventory_nonempty(pos)
 	local invnode = minetest.get_node(pos)
 	local invnodedef = minetest.registered_nodes[invnode.name]
 	-- Ignore stale nodes
@@ -78,14 +78,14 @@ local container_inventory_nonempty = function(pos)
 end
 
 -- weather pos has an constant signal output for the comparator
-local static_signal_output = function(pos)
+local function static_signal_output(pos)
 	local node = minetest.get_node(pos)
 	local g = minetest.get_item_group(node.name, "comparator_signal")
 	return g > 0
 end
 
 -- whether the comparator should be on according to its inputs
-local comparator_desired_on = function(pos, node)
+local function comparator_desired_on(pos, node)
 	local my_input_rules = comparator_get_input_rules(node);
 	local back_rule = my_input_rules[1]
 	local state
@@ -116,7 +116,7 @@ end
 
 
 -- update comparator state, if needed
-local update_self = function(pos, node)
+local function update_self(pos, node)
 	node = node or minetest.get_node(pos)
 	local old_state = mesecon.is_receptor_on(node.name)
 	local new_state = comparator_desired_on(pos, node)
@@ -131,7 +131,7 @@ end
 
 
 -- compute tile depending on state and mode
-local get_tiles = function(state, mode)
+local function get_tiles(state, mode)
 	local top = "mcl_comparators_"..state..".png^"..
 		"mcl_comparators_"..mode..".png"
 	local sides = "mcl_comparators_sides_"..state..".png^"..
@@ -146,13 +146,13 @@ local get_tiles = function(state, mode)
 end
 
 -- Given one mode, get the other mode
-local flipmode = function(mode)
+local function flipmode(mode)
 	if mode == "comp" then    return "sub"
 	elseif mode == "sub" then return "comp"
 	end
 end
 
-local make_rightclick_handler = function(state, mode)
+local function make_rightclick_handler(state, mode)
 	local newnodename =
 		"mcl_comparators:comparator_"..state.."_"..flipmode(mode)
 	return function (pos, node, clicker)
@@ -260,7 +260,7 @@ for _, mode in pairs{"comp", "sub"} do
 			paramtype2 = "facedir",
 			sunlight_propagates = false,
 			is_ground_content = false,
-			drop = 'mcl_comparators:comparator_off_comp',
+			drop = "mcl_comparators:comparator_off_comp",
 			on_construct = update_self,
 			on_rightclick =
 				make_rightclick_handler(state_str, mode),

mods/ITEMS/REDSTONE/mcl_dispensers/init.lua

@@ -7,10 +7,10 @@
 All node definitions share a lot of code, so this is the reason why there
 are so many weird tables below.
 ]]
-local S = minetest.get_translator("mcl_dispensers")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- For after_place_node
-local setup_dispenser = function(pos)
+local function setup_dispenser(pos)
 	-- Set formspec and inventory
 	local form = "size[9,8.75]"..
 	"label[0,4.0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
@@ -29,7 +29,7 @@ local setup_dispenser = function(pos)
 	inv:set_size("main", 9)
 end
 
-local orientate_dispenser = function(pos, placer)
+local function orientate_dispenser(pos, placer)
 	-- Not placed by player
 	if not placer then return end
 
@@ -99,7 +99,7 @@ local dispenserdef = {
 	mesecons = {
 		effector = {
 			-- Dispense random item when triggered
-			action_on = function (pos, node)
+			action_on = function(pos, node)
 				local meta = minetest.get_meta(pos)
 				local inv = meta:get_inventory()
 				local droppos, dropdir
@@ -246,10 +246,11 @@ S("• Flint and steel: Is used to ignite a fire in air and to ignite TNT").."\n
 S("• Spawn eggs: Will summon the mob they contain").."\n"..
 S("• Other items: Are simply dropped")
 
-horizontal_def.after_place_node = function(pos, placer, itemstack, pointed_thing)
+function horizontal_def.after_place_node(pos, placer, itemstack, pointed_thing)
 	setup_dispenser(pos)
 	orientate_dispenser(pos, placer)
 end
+
 horizontal_def.tiles = {
 	"default_furnace_top.png", "default_furnace_bottom.png",
 	"default_furnace_side.png", "default_furnace_side.png",
@@ -287,7 +288,7 @@ minetest.register_node("mcl_dispensers:dispenser_up", up_def)
 
 
 minetest.register_craft({
-	output = 'mcl_dispensers:dispenser',
+	output = "mcl_dispensers:dispenser",
 	recipe = {
 		{"mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble",},
 		{"mcl_core:cobble", "mcl_bows:bow", "mcl_core:cobble",},

mods/ITEMS/REDSTONE/mcl_droppers/init.lua

@@ -8,10 +8,10 @@ All node definitions share a lot of code, so this is the reason why there
 are so many weird tables below.
 ]]
 
-local S = minetest.get_translator("mcl_droppers")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- For after_place_node
-local setup_dropper = function(pos)
+local function setup_dropper(pos)
 	-- Set formspec and inventory
 	local form = "size[9,8.75]"..
 	"label[0,4.0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
@@ -30,7 +30,7 @@ local setup_dropper = function(pos)
 	inv:set_size("main", 9)
 end
 
-local orientate_dropper = function(pos, placer)
+local function orientate_dropper(pos, placer)
 	-- Not placed by player
 	if not placer then return end
 
@@ -98,7 +98,7 @@ local dropperdef = {
 	_mcl_hardness = 3.5,
 	mesecons = {effector = {
 		-- Drop random item when triggered
-		action_on = function (pos, node)
+		action_on = function(pos, node)
 			local meta = minetest.get_meta(pos)
 			local inv = meta:get_inventory()
 			local droppos
@@ -152,7 +152,7 @@ horizontal_def.description = S("Dropper")
 horizontal_def._tt_help = S("9 inventory slots").."\n"..S("Drops item when powered by redstone power")
 horizontal_def._doc_items_longdesc = S("A dropper is a redstone component and a container with 9 inventory slots which, when supplied with redstone power, drops an item or puts it into a container in front of it.")
 horizontal_def._doc_items_usagehelp = S("Droppers can be placed in 6 possible directions, items will be dropped out of the hole. Use the dropper to access its inventory. Supply it with redstone energy once to make the dropper drop or transfer a random item.")
-horizontal_def.after_place_node = function(pos, placer, itemstack, pointed_thing)
+function horizontal_def.after_place_node(pos, placer, itemstack, pointed_thing)
 	setup_dropper(pos)
 	orientate_dropper(pos, placer)
 end
@@ -195,7 +195,7 @@ minetest.register_node("mcl_droppers:dropper_up", up_def)
 
 -- Ladies and gentlemen, I present to you: the crafting recipe!
 minetest.register_craft({
-	output = 'mcl_droppers:dropper',
+	output = "mcl_droppers:dropper",
 	recipe = {
 		{"mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble",},
 		{"mcl_core:cobble", "", "mcl_core:cobble",},

mods/ITEMS/REDSTONE/mcl_droppers/init_new.lua

@@ -8,10 +8,10 @@ All node definitions share a lot of code, so this is the reason why there
 are so many weird tables below.
 ]]
 
-local S = minetest.get_translator("mcl_droppers")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 -- For after_place_node
-local setup_dropper = function(pos)
+local function setup_dropper(pos)
 	-- Set formspec and inventory
 	local form = "size[9,8.75]"..
 	"background[-0.19,-0.25;9.41,9.49;crafting_inventory_9_slots.png]"..
@@ -28,7 +28,7 @@ local setup_dropper = function(pos)
 	inv:set_size("main", 9)
 end
 
-local orientate_dropper = function(pos, placer)
+local function orientate_dropper(pos, placer)
 	-- Not placed by player
 	if not placer then return end
 
@@ -96,7 +96,7 @@ local dropperdef = {
 	_mcl_hardness = 3.5,
 	mesecons = {effector = {
 		-- Drop random item when triggered
-		action_on = function (pos, node)
+		action_on = function(pos, node)
 			local meta = minetest.get_meta(pos)
 			local inv = meta:get_inventory()
 			local droppos
@@ -149,14 +149,16 @@ local horizontal_def = table.copy(dropperdef)
 horizontal_def.description = S("Dropper")
 horizontal_def._doc_items_longdesc = S("A dropper is a redstone component and a container with 9 inventory slots which, when supplied with redstone power, drops an item or puts it into a container in front of it.")
 horizontal_def._doc_items_usagehelp = S("Droppers can be placed in 6 possible directions, items will be dropped out of the hole. Use the dropper to access its inventory. Supply it with redstone energy once to make the dropper drop or transfer a random item.")
-horizontal_def.after_place_node = function(pos, placer, itemstack, pointed_thing)
+
+function horizontal_def.after_place_node(pos, placer, itemstack, pointed_thing)
 	setup_dropper(pos)
 	orientate_dropper(pos, placer)
 end
+
 horizontal_def.tiles = {
 	"default_furnace_top.png", "default_furnace_bottom.png",
 	"default_furnace_side.png", "default_furnace_side.png",
-	"default_furnace_side.png", "mcl_droppers_dropper_front_horizontal.png"
+	"default_furnace_side.png", "mcl_droppers_dropper_front_horizontal.png",
 }
 horizontal_def.paramtype2 = "facedir"
 horizontal_def.groups = {pickaxey=1, container=2, material_stone=1}
@@ -170,7 +172,7 @@ down_def.after_place_node = setup_dropper
 down_def.tiles = {
 	"default_furnace_top.png", "mcl_droppers_dropper_front_vertical.png",
 	"default_furnace_side.png", "default_furnace_side.png",
-	"default_furnace_side.png", "default_furnace_side.png"
+	"default_furnace_side.png", "default_furnace_side.png",
 }
 down_def.groups = {pickaxey=1, container=2,not_in_creative_inventory=1, material_stone=1}
 down_def._doc_items_create_entry = false
@@ -184,7 +186,7 @@ up_def.description = S("Upwards-Facing Dropper")
 up_def.tiles = {
 	"mcl_droppers_dropper_front_vertical.png", "default_furnace_bottom.png",
 	"default_furnace_side.png", "default_furnace_side.png",
-	"default_furnace_side.png", "default_furnace_side.png"
+	"default_furnace_side.png", "default_furnace_side.png",
 }
 minetest.register_node("mcl_droppers:dropper_up", up_def)
 
@@ -192,7 +194,7 @@ minetest.register_node("mcl_droppers:dropper_up", up_def)
 
 -- Ladies and gentlemen, I present to you: the crafting recipe!
 minetest.register_craft({
-	output = 'mcl_droppers:dropper',
+	output = "mcl_droppers:dropper",
 	recipe = {
 		{"mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble",},
 		{"mcl_core:cobble", "", "mcl_core:cobble",},

mods/ITEMS/REDSTONE/mcl_observers/init.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mcl_observers")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 mcl_observers = {}
 

mods/ITEMS/REDSTONE/mesecons/actionqueue.lua

@@ -1,3 +1,5 @@
+local table = table
+
 mesecon.queue.actions={} -- contains all ActionQueue actions
 
 function mesecon.queue:add_function(name, func)
@@ -31,7 +33,7 @@ function mesecon.queue:add_action(pos, func, params, time, overwritecheck, prior
 		end
 	end
 
-	if (toremove ~= nil) then
+	if toremove then
 		table.remove(mesecon.queue.actions, toremove)
 	end
 
@@ -43,7 +45,7 @@ end
 -- this makes sure that resuming mesecons circuits when restarting minetest works fine
 -- However, even that does not work in some cases, that's why we delay the time the globalsteps
 -- start to be execute by 5 seconds
-local get_highest_priority = function (actions)
+local function get_highest_priority(actions)
 	local highestp = -1
 	local highesti
 	for i, ac in ipairs(actions) do

mods/ITEMS/REDSTONE/mesecons/internal.lua

@@ -138,7 +138,7 @@ local function receptor_get_rules(node)
 	local receptor = mesecon.get_receptor(node.name)
 	if receptor then
 		local rules = receptor.rules
-		if type(rules) == 'function' then
+		if type(rules) == "function" then
 			return rules(node)
 		elseif rules then
 			return rules
@@ -179,7 +179,7 @@ function mesecon.effector_get_rules(node)
 	local effector = mesecon.get_effector(node.name)
 	if effector then
 		local rules = effector.rules
-		if type(rules) == 'function' then
+		if type(rules) == "function" then
 			return rules(node)
 		elseif rules then
 			return rules
@@ -352,7 +352,7 @@ function mesecon.conductor_get_rules(node)
 	local conductor = mesecon.get_conductor(node.name)
 	if conductor then
 		local rules = conductor.rules
-		if type(rules) == 'function' then
+		if type(rules) == "function" then
 			return rules(node)
 		elseif rules then
 			return rules

mods/ITEMS/REDSTONE/mesecons_button/init.lua

@@ -1,7 +1,7 @@
 -- WALL BUTTON
 -- A button that when pressed emits power for a short moment and then turns off again
 
-local S = minetest.get_translator("mesecons_button")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 local button_sounds = {} -- remember button push sounds
 
@@ -37,7 +37,7 @@ function mesecon.push_button(pos, node)
 	timer:start(def._mcl_button_timer)
 end
 
-local on_button_place = function(itemstack, placer, pointed_thing)
+local function on_button_place(itemstack, placer, pointed_thing)
 	if pointed_thing.type ~= "node" then
 		-- no interaction possible with entities
 		return itemstack
@@ -86,7 +86,7 @@ end
 
 local buttonuse = S("Use the button to push it.")
 
-mesecon.register_button = function(basename, description, texture, recipeitem, sounds, plusgroups, button_timer, push_by_arrow, longdesc, button_sound)
+function mesecon.register_button(basename, description, texture, recipeitem, sounds, plusgroups, button_timer, push_by_arrow, longdesc, button_sound)
 	local groups_off = table.copy(plusgroups)
 	groups_off.attached_node=1
 	groups_off.dig_by_water=1
@@ -132,7 +132,7 @@ mesecon.register_button = function(basename, description, texture, recipeitem, s
 		_doc_items_usagehelp = buttonuse,
 		on_place = on_button_place,
 		node_placement_prediction = "",
-		on_rightclick = function (pos, node)
+		on_rightclick = function(pos, node)
 			mesecon.push_button(pos, node)
 		end,
 		sounds = sounds,
@@ -159,7 +159,7 @@ mesecon.register_button = function(basename, description, texture, recipeitem, s
 		sunlight_propagates = true,
 		node_box = boxes_on,
 		groups = groups_on,
-		drop = 'mesecons_button:button_'..basename..'_off',
+		drop = "mesecons_button:button_"..basename.."_off",
 		_doc_items_create_entry = false,
 		node_placement_prediction = "",
 		sounds = sounds,

mods/ITEMS/REDSTONE/mesecons_commandblock/init.lua

@@ -1,6 +1,8 @@
-local S = minetest.get_translator("mesecons_commandblock")
+local S = minetest.get_translator(minetest.get_current_modname())
 local F = minetest.formspec_escape
 
+local tonumber = tonumber
+
 local color_red = mcl_colors.RED
 
 local command_blocks_activated = minetest.settings:get_bool("mcl_enable_commandblocks", true)
@@ -27,7 +29,7 @@ local function resolve_commands(commands, pos)
 	local commander = meta:get_string("commander")
 
 	-- A non-printable character used while replacing “@@”.
-	local SUBSTITUTE_CHARACTER = '\26' -- ASCII SUB
+	local SUBSTITUTE_CHARACTER = "\26" -- ASCII SUB
 
 	-- No players online: remove all commands containing
 	-- problematic placeholders.
@@ -137,7 +139,7 @@ local function commandblock_action_off(pos, node)
 	end
 end
 
-local on_rightclick = function(pos, node, player, itemstack, pointed_thing)
+local function on_rightclick(pos, node, player, itemstack, pointed_thing)
 	if not command_blocks_activated then
 		minetest.chat_send_player(player:get_player_name(), msg_not_activated)
 		return
@@ -192,18 +194,18 @@ local on_rightclick = function(pos, node, player, itemstack, pointed_thing)
 	minetest.show_formspec(pname, "commandblock_"..pos.x.."_"..pos.y.."_"..pos.z, formspec)
 end
 
-local on_place = function(itemstack, placer, pointed_thing)
+local function on_place(itemstack, placer, pointed_thing)
 	if pointed_thing.type ~= "node" then
 		return itemstack
 	end
 
 	-- Use pointed node's on_rightclick function first, if present
-	local node = minetest.get_node(pointed_thing.under)
-	if placer and not placer:get_player_control().sneak then
-		if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
-			return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack) or itemstack
-		end
-	end
+    local new_stack = mcl_util.call_on_rightclick(itemstack, placer, pointed_thing)
+    if new_stack then
+        return new_stack
+    end
+
+	--local node = minetest.get_node(pointed_thing.under)
 
 	local privs = minetest.get_player_privs(placer:get_player_name())
 	if not privs.maphack then
@@ -295,8 +297,8 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 		end
 
 		local index, _, x, y, z = string.find(formname, "commandblock_(-?%d+)_(-?%d+)_(-?%d+)")
-		if index ~= nil and x ~= nil and y ~= nil and z ~= nil then
-			local pos = {x=tonumber(x), y=tonumber(y), z=tonumber(z)}
+		if index and x and y and z then
+			local pos = {x = tonumber(x), y = tonumber(y), z = tonumber(z)}
 			local meta = minetest.get_meta(pos)
 			if not minetest.is_creative_enabled(player:get_player_name()) then
 				minetest.chat_send_player(player:get_player_name(), S("Editing the command block has failed! You can only change the command block in Creative Mode!"))

mods/ITEMS/REDSTONE/mesecons_commandblock/mod.conf

@@ -1,3 +1,3 @@
 name = mesecons_commandblock
-depends = mesecons, mcl_colors
+depends = mesecons, mcl_colors, mcl_util
 optional_depends = doc, doc_items

mods/ITEMS/REDSTONE/mesecons_delayer/init.lua

@@ -1,4 +1,4 @@
-local S = minetest.get_translator("mesecons_delayer")
+local S = minetest.get_translator(minetest.get_current_modname())
 
 local DELAYS = { 0.1, 0.2, 0.3, 0.4 }
 local DEFAULT_DELAY = DELAYS[1]
@@ -264,8 +264,8 @@ for i = 1, 4 do
 		paramtype2 = "facedir",
 		sunlight_propagates = false,
 		is_ground_content = false,
-		drop = 'mesecons_delayer:delayer_off_1',
-		on_rightclick = function (pos, node, clicker)
+		drop = "mesecons_delayer:delayer_off_1",
+		on_rightclick = function(pos, node, clicker)
 			local protname = clicker:get_player_name()
 			if minetest.is_protected(pos, protname) then
 				minetest.record_protection_violation(pos, protname)
@@ -330,8 +330,8 @@ for i = 1, 4 do
 		paramtype2 = "facedir",
 		sunlight_propagates = false,
 		is_ground_content = false,
-		drop = 'mesecons_delayer:delayer_off_1',
-		on_rightclick = function (pos, node, clicker)
+		drop = "mesecons_delayer:delayer_off_1",
+		on_rightclick = function(pos, node, clicker)
 			local protname = clicker:get_player_name()
 			if minetest.is_protected(pos, protname) then
 				minetest.record_protection_violation(pos, protname)
@@ -410,7 +410,7 @@ minetest.register_node("mesecons_delayer:delayer_off_locked", {
 	paramtype2 = "facedir",
 	sunlight_propagates = false,
 	is_ground_content = false,
-	drop = 'mesecons_delayer:delayer_off_1',
+	drop = "mesecons_delayer:delayer_off_1",
 	delayer_time = DEFAULT_DELAY,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	mesecons = {
@@ -465,7 +465,7 @@ minetest.register_node("mesecons_delayer:delayer_on_locked", {
 	paramtype2 = "facedir",
 	sunlight_propagates = false,
 	is_ground_content = false,
-	drop = 'mesecons_delayer:delayer_off_1',
+	drop = "mesecons_delayer:delayer_off_1",
 	delayer_time = DEFAULT_DELAY,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	mesecons = {