VoxeLibre/mods/ITEMS/mcl_chests/init.lua

local S = minetest.get_translator("mcl_chests")
local mod_doc = minetest.get_modpath("doc")

-- Chest Entity
local animate_chests = (minetest.settings:get_bool("animated_chests") ~= false)
local entity_animations = {
	shulker = {
		speed = 50,
		open = {x = 45, y = 95},
		close = {x = 95, y = 145},
	},
	chest = {
		speed = 25,
		open = {x = 0, y = 7},
		close = {x = 13, y = 20},
	}
}

minetest.register_entity("mcl_chests:chest", {
	initial_properties = {
		visual = "mesh",
		visual_size = {x = 3, y = 3},
		pointable = false,
		physical = false,
		static_save = false,
	},

	set_animation = function(self, animname)
		local anim_table = entity_animations[self.animation_type]
		local anim = anim_table[animname]
		if not anim then return end
		self.object:set_animation(anim, anim_table.speed, 0, false)
	end,

	open = function(self, playername)
		self.players[playername] = true
		if not self.is_open then
			self:set_animation("open")
			minetest.sound_play(self.sound_prefix .. "_open", {
				pos = self.node_pos,
			})
			self.is_open = true
		end
	end,

	close = function(self, playername)
		local playerlist = self.players
		playerlist[playername] = nil
		if self.is_open then
			for _ in pairs(playerlist) do
				return
			end
			self:set_animation("close")
			minetest.sound_play(self.sound_prefix .. "_close", {
				pos = self.node_pos,
			})
			self.is_open = false
		end
	end,

	initialize = function(self, node_pos, node_name, textures, dir, double, sound_prefix, mesh_prefix, animation_type)
		self.node_pos = node_pos
		self.node_name = node_name
		self.sound_prefix = sound_prefix
		self.animation_type = animation_type
		local obj = self.object
		obj:set_properties({
			textures = textures,
			mesh = mesh_prefix .. (double and "_double" or "") .. ".b3d",
		})
		self:set_yaw(dir)
	end,

	reinitialize = function(self, node_name)
		self.node_name = node_name
	end,

	set_yaw = function(self, dir)
		self.object:set_yaw(minetest.dir_to_yaw(dir))
	end,

	check = function(self)
		local node_pos, node_name = self.node_pos, self.node_name
		if not node_pos or not node_name then
			return false
		end
		local node = minetest.get_node(node_pos)
		if node.name ~= node_name then
			return false
		end
		return true
	end,

	on_activate = function(self)
		self.object:set_armor_groups({immortal = 1})
		self.players = {}
	end,

	on_step = function(self, dtime)
		if not self:check() then
			self.object:remove()
		end
	end
})

local function get_entity_pos(pos, dir, double)
	pos = vector.new(pos)
	pos.y = pos.y - 0.49
	if double then
		local add, mul, vec, cross = vector.add, vector.multiply, vector.new, vector.cross
		pos = add(pos, mul(cross(dir, vec(0, 1, 0)), -0.5))
	end
	return pos
end

local function find_entity(pos)
	for _, obj in pairs(minetest.get_objects_inside_radius(pos, 0)) do
		local luaentity = obj:get_luaentity()
		if luaentity and luaentity.name == "mcl_chests:chest" then
			return luaentity
		end
	end
end

local function get_entity_info(pos, param2, double, dir, entity_pos)
	dir = dir or minetest.facedir_to_dir(param2)
	return dir, get_entity_pos(pos, dir, double)
end

local function create_entity(pos, node_name, textures, param2, double, sound_prefix, mesh_prefix, animation_type, dir, entity_pos)
	dir, entity_pos = get_entity_info(pos, param2, double, dir, entity_pos)
	local obj = minetest.add_entity(entity_pos, "mcl_chests:chest")
	local luaentity = obj:get_luaentity()
	luaentity:initialize(pos, node_name, textures, dir, double, sound_prefix, mesh_prefix, animation_type)
	return luaentity
end

local function find_or_create_entity(pos, node_name, textures, param2, double, sound_prefix, mesh_prefix, animation_type, dir, entity_pos)
	dir, entity_pos = get_entity_info(pos, param2, double, dir, entity_pos)
	return find_entity(entity_pos) or create_entity(pos, node_name, textures, param2, double, sound_prefix, mesh_prefix, animation_type, dir, entity_pos)
end

local no_rotate, simple_rotate
if minetest.get_modpath("screwdriver") then
	no_rotate = screwdriver.disallow
	simple_rotate = function(pos, node, user, mode, new_param2)
		if screwdriver.rotate_simple(pos, node, user, mode, new_param2) ~= false then
			local nodename = node.name
			local nodedef = minetest.registered_nodes[nodename]
			local dir = minetest.facedir_to_dir(new_param2)
			find_or_create_entity(pos, nodename, nodedef._chest_entity_textures, new_param2, false, nodedef._chest_entity_sound, nodedef._chest_entity_mesh, nodedef._chest_entity_animation_type, dir):set_yaw(dir)
		else
			return false
		end
	end
end

--[[ List of open chests.
Key: Player name
Value:
    If player is using a chest: { pos = <chest node position> }
    Otherwise: nil ]]
local open_chests = {}

local function back_is_blocked(pos, dir)
	pos = vector.add(pos, dir)
	local def = minetest.registered_nodes[minetest.get_node(pos).name]
	pos.y = pos.y + 1
	local def2 = minetest.registered_nodes[minetest.get_node(pos).name]
	return not def or def.groups.opaque == 1 or not def2 or def2.groups.opaque == 1
end
-- To be called if a player opened a chest
local player_chest_open = function(player, pos, node_name, textures, param2, double, sound, mesh, shulker)
	local name = player:get_player_name()
	open_chests[name] = {pos = pos, node_name = node_name, textures = textures, param2 = param2, double = double, sound = sound, mesh = mesh, shulker = shulker}
	if animate_chests then
		local dir = minetest.facedir_to_dir(param2)
		find_or_create_entity(pos, node_name, textures, param2, double, sound, mesh, shulker and "shulker" or "chest", dir):open(name)
	end
end

-- Simple protection checking functions
local protection_check_move = function(pos, from_list, from_index, to_list, to_index, count, player)
	local name = player:get_player_name()
	if minetest.is_protected(pos, name) then
		minetest.record_protection_violation(pos, name)
		return 0
	else
		return count
	end
end
local protection_check_put_take = function(pos, listname, index, stack, player)
	local name = player:get_player_name()
	if minetest.is_protected(pos, name) then
		minetest.record_protection_violation(pos, name)
		return 0
	else
		return stack:get_count()
	end
end

local trapped_chest_mesecons_rules = mesecon.rules.pplate

-- To be called when a chest is closed (only relevant for trapped chest atm)
local chest_update_after_close = function(pos)
	local node = minetest.get_node(pos)

	if node.name == "mcl_chests:trapped_chest_on_small" then
		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_small", param2 = node.param2})
		find_or_create_entity(pos, "mcl_chests:trapped_chest_small", {"mcl_chests_trapped.png"}, node.param2, false, "default_chest", "mcl_chests_chest", "chest"):reinitialize("mcl_chests:trapped_chest_small")
		mesecon.receptor_off(pos, trapped_chest_mesecons_rules)
	elseif node.name == "mcl_chests:trapped_chest_on_left" then
		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_left", param2 = node.param2})
		find_or_create_entity(pos, "mcl_chests:trapped_chest_left", {"mcl_chests_trapped_double.png"}, node.param2, true, "default_chest", "mcl_chests_chest", "chest"):reinitialize("mcl_chests:trapped_chest_left")
		mesecon.receptor_off(pos, trapped_chest_mesecons_rules)

		local pos_other = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "left")
		minetest.swap_node(pos_other, {name="mcl_chests:trapped_chest_right", param2 = node.param2})
		mesecon.receptor_off(pos_other, trapped_chest_mesecons_rules)
	elseif node.name == "mcl_chests:trapped_chest_on_right" then
		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_right", param2 = node.param2})
		mesecon.receptor_off(pos, trapped_chest_mesecons_rules)

		local pos_other = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "right")
		minetest.swap_node(pos_other, {name="mcl_chests:trapped_chest_left", param2 = node.param2})
		find_or_create_entity(pos_other, "mcl_chests:trapped_chest_left", {"mcl_chests_trapped_double.png"}, node.param2, true, "default_chest", "mcl_chests_chest", "chest"):reinitialize("mcl_chests:trapped_chest_left")
		mesecon.receptor_off(pos_other, trapped_chest_mesecons_rules)
	end
end

-- To be called if a player closed a chest
local player_chest_close = function(player)
	local name = player:get_player_name()
	local open_chest = open_chests[name]
	if open_chest == nil then
		return
	end
	if animate_chests then
		find_or_create_entity(open_chest.pos, open_chest.node_name, open_chest.textures, open_chest.param2, open_chest.double, open_chest.sound, open_chest.mesh, open_chest.shulker and "shulker" or "chest"):close(name)
	end
	chest_update_after_close(open_chest.pos)

	open_chests[name] = nil
end

-- This is a helper function to register both chests and trapped chests. Trapped chests will make use of the additional parameters
local register_chest = function(basename, desc, longdesc, usagehelp, tt_help, tiles_table, hidden, mesecons, on_rightclick_addendum, on_rightclick_addendum_left, on_rightclick_addendum_right, drop, canonical_basename)
-- START OF register_chest FUNCTION BODY
if not drop then
	drop = "mcl_chests:"..basename
else
	drop = "mcl_chests:"..drop
end
-- The basename of the "canonical" version of the node, if set (e.g.: trapped_chest_on → trapped_chest).
-- Used to get a shared formspec ID and to swap the node back to the canonical version in on_construct.
if not canonical_basename then
	canonical_basename = basename
end

local double_chest_add_item = function(top_inv, bottom_inv, listname, stack)
	if not stack or stack:is_empty() then
		return
	end

	local name = stack:get_name()

	local top_off = function(inv, stack)
		for c, chest_stack in ipairs(inv:get_list(listname)) do
			if stack:is_empty() then
				break
			end

			if chest_stack:get_name() == name and chest_stack:get_free_space() > 0 then
				stack = chest_stack:add_item(stack)
				inv:set_stack(listname, c, chest_stack)
			end
		end

		return stack
	end

	stack = top_off(top_inv, stack)
	stack = top_off(bottom_inv, stack)

	if not stack:is_empty() then
		stack = top_inv:add_item(listname, stack)
		if not stack:is_empty() then
			bottom_inv:add_item(listname, stack)
		end
	end
end

local drop_items_chest = function(pos, oldnode, oldmetadata)
	local meta = minetest.get_meta(pos)
	local meta2 = meta
	if oldmetadata then
		meta:from_table(oldmetadata)
	end
	local inv = meta:get_inventory()
	for i=1,inv:get_size("main") do
		local stack = inv:get_stack("main", i)
		if not stack:is_empty() then
			local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
			minetest.add_item(p, stack)
		end
	end
	meta:from_table(meta2:to_table())
end

local on_chest_blast = function(pos)
	local node = minetest.get_node(pos)
	drop_items_chest(pos, node)
	minetest.remove_node(pos)
end

local function limit_put_list(stack, list)
	for _, other in ipairs(list) do
		stack = other:add_item(stack)
		if stack:is_empty() then
			break
		end
	end
	return stack
end

local function limit_put(stack, inv1, inv2)
	local leftover = ItemStack(stack)
	leftover = limit_put_list(leftover, inv1:get_list("main"))
	leftover = limit_put_list(leftover, inv2:get_list("main"))
	return stack:get_count() - leftover:get_count()
end

local small_name = "mcl_chests:"..basename.."_small"
local small_textures = tiles_table.small
local left_name = "mcl_chests:"..basename.."_left"
local left_textures = tiles_table.double

minetest.register_node("mcl_chests:"..basename, {
	description = desc,
	_tt_help = tt_help,
	_doc_items_longdesc = longdesc,
	_doc_items_usagehelp = usagehelp,
	_doc_items_hidden = hidden,
	drawtype = "mesh",
	mesh = "mcl_chests_chest.obj",
	tiles = small_textures,
	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
	paramtype = "light",
	paramtype2 = "facedir",
	stack_max = 64,
	sounds = mcl_sounds.node_sound_wood_defaults(),
	groups = {deco_block=1},
	on_construct = function(pos, node)
		local node = minetest.get_node(pos)
		node.name = small_name
		minetest.set_node(pos, node)
	end,
	after_place_node = function(pos, placer, itemstack, pointed_thing)
		minetest.get_meta(pos):set_string("name", itemstack:get_meta():get_string("name"))
	end,
})

local function close_forms(canonical_basename, pos)
	local players = minetest.get_connected_players()
	for p=1, #players do
		if vector.distance(players[p]:get_pos(), pos) <= 30 then
			minetest.close_formspec(players[p]:get_player_name(), "mcl_chests:"..canonical_basename.."_"..pos.x.."_"..pos.y.."_"..pos.z)
		end
	end
end

minetest.register_node(small_name, {
	description = desc,
	_tt_help = tt_help,
	_doc_items_longdesc = longdesc,
	_doc_items_usagehelp = usagehelp,
	_doc_items_hidden = hidden,
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
        fixed = {-0.4375, -0.5, -0.4375, 0.4375, 0.375, 0.4375},
	},
	tiles = {"mcl_chests_blank.png"},
	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "clip" or true,
	_chest_entity_textures = small_textures,
	_chest_entity_sound = "default_chest",
	_chest_entity_mesh = "mcl_chests_chest",
	_chest_entity_animation_type = "chest",
	paramtype = "light",
	paramtype2 = "facedir",
	stack_max = 64,
	drop = drop,
	groups = {handy=1,axey=1, container=2, deco_block=1, material_wood=1,flammable=-1,chest_entity=1, not_in_creative_inventory=1},
	is_ground_content = false,
	sounds = mcl_sounds.node_sound_wood_defaults(),
	on_construct = function(pos)
		local param2 = minetest.get_node(pos).param2
		local meta = minetest.get_meta(pos)
		--[[ This is a workaround for Minetest issue 5894
		<https://github.com/minetest/minetest/issues/5894>.
		Apparently if we don't do this, large chests initially don't work when
		placed at chunk borders, and some chests randomly don't work after
		placing. ]]
		-- FIXME: Remove this workaround when the bug has been fixed.
		-- BEGIN OF WORKAROUND --
		meta:set_string("workaround", "ignore_me")
		meta:set_string("workaround", nil) -- Done to keep metadata clean
		-- END OF WORKAROUND --
		local inv = meta:get_inventory()
		inv:set_size("main", 9*3)
		--[[ The "input" list is *another* workaround (hahahaha!) around the fact that Minetest
		does not support listrings to put items into an alternative list if the first one
		happens to be full. See <https://github.com/minetest/minetest/issues/5343>.
		This list is a hidden input-only list and immediately puts items into the appropriate chest.
		It is only used for listrings and hoppers. This workaround is not that bad because it only
		requires a simple “inventory allows” check for large chests.]]
		-- FIXME: Refactor the listrings as soon Minetest supports alternative listrings
		-- BEGIN OF LISTRING WORKAROUND
		inv:set_size("input", 1)
		-- END OF LISTRING WORKAROUND
		if minetest.get_node(mcl_util.get_double_container_neighbor_pos(pos, param2, "right")).name == "mcl_chests:"..canonical_basename.."_small" then
			minetest.swap_node(pos, {name="mcl_chests:"..canonical_basename.."_right",param2=param2})
			local p = mcl_util.get_double_container_neighbor_pos(pos, param2, "right")
			minetest.swap_node(p, { name = "mcl_chests:"..canonical_basename.."_left", param2 = param2 })
			create_entity(p, "mcl_chests:"..canonical_basename.."_left", left_textures, param2, true, "default_chest", "mcl_chests_chest", "chest")
		elseif minetest.get_node(mcl_util.get_double_container_neighbor_pos(pos, param2, "left")).name == "mcl_chests:"..canonical_basename.."_small" then
			minetest.swap_node(pos, {name="mcl_chests:"..canonical_basename.."_left",param2=param2})
			create_entity(pos, "mcl_chests:"..canonical_basename.."_left", left_textures, param2, true, "default_chest", "mcl_chests_chest", "chest")
			local p = mcl_util.get_double_container_neighbor_pos(pos, param2, "left")
			minetest.swap_node(p, { name = "mcl_chests:"..canonical_basename.."_right", param2 = param2 })
		else
			minetest.swap_node(pos, { name = "mcl_chests:"..canonical_basename.."_small", param2 = param2 })
			create_entity(pos, small_name, small_textures, param2, false, "default_chest", "mcl_chests_chest", "chest")
		end
	end,
	after_place_node = function(pos, placer, itemstack, pointed_thing)
		minetest.get_meta(pos):set_string("name", itemstack:get_meta():get_string("name"))
	end,
	after_dig_node = drop_items_chest,
	on_blast = on_chest_blast,
	allow_metadata_inventory_move = protection_check_move,
	allow_metadata_inventory_take = protection_check_put_take,
	allow_metadata_inventory_put = protection_check_put_take,
	on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
		minetest.log("action", player:get_player_name()..
				" moves stuff in chest at "..minetest.pos_to_string(pos))
	end,
	on_metadata_inventory_put = function(pos, listname, index, stack, player)
		minetest.log("action", player:get_player_name()..
				" moves stuff to chest at "..minetest.pos_to_string(pos))
		-- BEGIN OF LISTRING WORKAROUND
		if listname == "input" then
			local inv = minetest.get_inventory({type="node", pos=pos})
			inv:add_item("main", stack)
		end
		-- END OF LISTRING WORKAROUND
	end,
	on_metadata_inventory_take = function(pos, listname, index, stack, player)
		minetest.log("action", player:get_player_name()..
				" takes stuff from chest at "..minetest.pos_to_string(pos))
	end,
	_mcl_blast_resistance = 2.5,
	_mcl_hardness = 2.5,

	on_rightclick = function(pos, node, clicker)
		if minetest.registered_nodes[minetest.get_node({x = pos.x, y = pos.y + 1, z = pos.z}).name].groups.opaque == 1 then
			-- won't open if there is no space from the top
			return false
		end
		local name = minetest.get_meta(pos):get_string("name")
		if name == "" then
			name = S("Chest")
		end

		minetest.show_formspec(clicker:get_player_name(),
		"mcl_chests:"..canonical_basename.."_"..pos.x.."_"..pos.y.."_"..pos.z,
		"size[9,8.75]"..
		"label[0,0;"..minetest.formspec_escape(minetest.colorize("#313131", name)).."]"..
		"list[nodemeta:"..pos.x..","..pos.y..","..pos.z..";main;0,0.5;9,3;]"..
		mcl_formspec.get_itemslot_bg(0,0.5,9,3)..
		"label[0,4.0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
		"list[current_player;main;0,4.5;9,3;9]"..
		mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
		"list[current_player;main;0,7.74;9,1;]"..
		mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
		"listring[nodemeta:"..pos.x..","..pos.y..","..pos.z..";main]"..
		"listring[current_player;main]")

		if on_rightclick_addendum then
			on_rightclick_addendum(pos, node, clicker)
		end

		player_chest_open(clicker, pos, small_name, small_textures, node.param2, false, "default_chest", "mcl_chests_chest")
	end,

	on_destruct = function(pos)
		close_forms(canonical_basename, pos)
	end,
	mesecons = mesecons,
	on_rotate = simple_rotate,
})

minetest.register_node(left_name, {
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
        fixed = {-0.4375, -0.5, -0.4375, 0.5, 0.375, 0.4375},
	},
	tiles = {"mcl_chests_blank.png"},
	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "clip" or true,
	_chest_entity_textures = left_textures,
	_chest_entity_sound = "default_chest",
	_chest_entity_mesh = "mcl_chests_chest",
	_chest_entity_animation_type = "chest",
	paramtype = "light",
	paramtype2 = "facedir",
	groups = {handy=1,axey=1, container=5,not_in_creative_inventory=1, material_wood=1,flammable=-1,chest_entity=1,double_chest=1},
	drop = drop,
	is_ground_content = false,
	sounds = mcl_sounds.node_sound_wood_defaults(),
	on_construct = function(pos)
		local n = minetest.get_node(pos)
		local param2 = n.param2
		local p = mcl_util.get_double_container_neighbor_pos(pos, param2, "left")
		if not p or minetest.get_node(p).name ~= "mcl_chests:"..canonical_basename.."_right" then
			n.name = "mcl_chests:"..canonical_basename.."_small"
			minetest.swap_node(pos, n)
		end
		create_entity(pos, left_name, left_textures, param2, true, "default_chest", "mcl_chests_chest", "chest")
	end,
	after_place_node = function(pos, placer, itemstack, pointed_thing)
		minetest.get_meta(pos):set_string("name", itemstack:get_meta():get_string("name"))
	end,
	on_destruct = function(pos)
		local n = minetest.get_node(pos)
		if n.name == small_name then
			return
		end

		close_forms(canonical_basename, pos)

		local param2 = n.param2
		local p = mcl_util.get_double_container_neighbor_pos(pos, param2, "left")
		if not p or minetest.get_node(p).name ~= "mcl_chests:"..basename.."_right" then
			return
		end
		close_forms(canonical_basename, p)

		minetest.swap_node(p, { name = small_name, param2 = param2 })
		create_entity(p, small_name, small_textures, param2, false, "default_chest", "mcl_chests_chest", "chest")
	end,
	after_dig_node = drop_items_chest,
	on_blast = on_chest_blast,
	allow_metadata_inventory_move = protection_check_move,
	allow_metadata_inventory_take = protection_check_put_take,
	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
		local name = player:get_player_name()
		if minetest.is_protected(pos, name) then
			minetest.record_protection_violation(pos, name)
			return 0
		-- BEGIN OF LISTRING WORKAROUND
		elseif listname == "input" then
			local inv = minetest.get_inventory({type="node", pos=pos})
			local other_pos = mcl_util.get_double_container_neighbor_pos(pos, minetest.get_node(pos).param2, "left")
			local other_inv = minetest.get_inventory({type="node", pos=other_pos})
			return limit_put(stack, inv, other_inv)
			--[[if inv:room_for_item("main", stack) then
				return -1
			else

				if other_inv:room_for_item("main", stack) then
					return -1
				else
					return 0
				end
			end]]--
		-- END OF LISTRING WORKAROUND
		else
			return stack:get_count()
		end
	end,
	on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
		minetest.log("action", player:get_player_name()..
				" moves stuff in chest at "..minetest.pos_to_string(pos))
	end,
	on_metadata_inventory_put = function(pos, listname, index, stack, player)
		minetest.log("action", player:get_player_name()..
				" moves stuff to chest at "..minetest.pos_to_string(pos))
		-- BEGIN OF LISTRING WORKAROUND
		if listname == "input" then
			local inv = minetest.get_inventory({type="node", pos=pos})
			local other_pos = mcl_util.get_double_container_neighbor_pos(pos, minetest.get_node(pos).param2, "left")
			local other_inv = minetest.get_inventory({type="node", pos=other_pos})

			inv:set_stack("input", 1, nil)

			double_chest_add_item(inv, other_inv, "main", stack)
		end
		-- END OF LISTRING WORKAROUND
	end,
	on_metadata_inventory_take = function(pos, listname, index, stack, player)
		minetest.log("action", player:get_player_name()..
				" takes stuff from chest at "..minetest.pos_to_string(pos))
	end,
	_mcl_blast_resistance = 2.5,
	_mcl_hardness = 2.5,

	on_rightclick = function(pos, node, clicker)
		local pos_other = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "left")
		if minetest.registered_nodes[minetest.get_node({x = pos.x, y = pos.y + 1, z = pos.z}).name].groups.opaque == 1
			or minetest.registered_nodes[minetest.get_node({x = pos_other.x, y = pos_other.y + 1, z = pos_other.z}).name].groups.opaque == 1 then
				-- won't open if there is no space from the top
				return false
		end

		local name = minetest.get_meta(pos):get_string("name")
		if name == "" then
			name = minetest.get_meta(pos_other):get_string("name")
		end
		if name == "" then
			name = S("Large Chest")
		end

		minetest.show_formspec(clicker:get_player_name(),
		"mcl_chests:"..canonical_basename.."_"..pos.x.."_"..pos.y.."_"..pos.z,
		"size[9,11.5]"..
		"label[0,0;"..minetest.formspec_escape(minetest.colorize("#313131", name)).."]"..
		"list[nodemeta:"..pos.x..","..pos.y..","..pos.z..";main;0,0.5;9,3;]"..
		mcl_formspec.get_itemslot_bg(0,0.5,9,3)..
		"list[nodemeta:"..pos_other.x..","..pos_other.y..","..pos_other.z..";main;0,3.5;9,3;]"..
		mcl_formspec.get_itemslot_bg(0,3.5,9,3)..
		"label[0,7;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
		"list[current_player;main;0,7.5;9,3;9]"..
		mcl_formspec.get_itemslot_bg(0,7.5,9,3)..
		"list[current_player;main;0,10.75;9,1;]"..
		mcl_formspec.get_itemslot_bg(0,10.75,9,1)..
		-- BEGIN OF LISTRING WORKAROUND
		"listring[current_player;main]"..
		"listring[nodemeta:"..pos.x..","..pos.y..","..pos.z..";input]"..
		-- END OF LISTRING WORKAROUND
		"listring[current_player;main]"..
		"listring[nodemeta:"..pos.x..","..pos.y..","..pos.z..";main]"..
		"listring[current_player;main]"..
		"listring[nodemeta:"..pos_other.x..","..pos_other.y..","..pos_other.z..";main]")

		if on_rightclick_addendum_left then
			on_rightclick_addendum_left(pos, node, clicker)
		end

		player_chest_open(clicker, pos, left_name, left_textures, node.param2, true, "default_chest", "mcl_chests_chest")
	end,
	mesecons = mesecons,
	on_rotate = no_rotate,
})

minetest.register_node("mcl_chests:"..basename.."_right", {
	drawtype = "nodebox",
	paramtype = "light",
	paramtype2 = "facedir",
	node_box = {
		type = "fixed",
        fixed = {-0.5, -0.5, -0.4375, 0.4375, 0.375, 0.4375},
	},
	tiles = {"mcl_chests_blank.png"},
	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "clip" or true,
	groups = {handy=1,axey=1, container=6,not_in_creative_inventory=1, material_wood=1,flammable=-1,double_chest=2},
	drop = drop,
	is_ground_content = false,
	sounds = mcl_sounds.node_sound_wood_defaults(),
	on_construct = function(pos)
		local n = minetest.get_node(pos)
		local param2 = n.param2
		local p = mcl_util.get_double_container_neighbor_pos(pos, param2, "right")
		if not p or minetest.get_node(p).name ~= "mcl_chests:"..canonical_basename.."_left" then
			n.name = "mcl_chests:"..canonical_basename.."_small"
			minetest.swap_node(pos, n)
		end
	end,
	after_place_node = function(pos, placer, itemstack, pointed_thing)
		minetest.get_meta(pos):set_string("name", itemstack:get_meta():get_string("name"))
	end,
	on_destruct = function(pos)
		local n = minetest.get_node(pos)
		if n.name == small_name then
			return
		end

		close_forms(canonical_basename, pos)

		local param2 = n.param2
		local p = mcl_util.get_double_container_neighbor_pos(pos, param2, "right")
		if not p or minetest.get_node(p).name ~= "mcl_chests:"..basename.."_left" then
			return
		end
		close_forms(canonical_basename, p)

		minetest.swap_node(p, { name = small_name, param2 = param2 })
		create_entity(p, small_name, small_textures, param2, false, "default_chest", "mcl_chests_chest", "chest")
		local meta = minetest.get_meta(pos)
	end,
	after_dig_node = drop_items_chest,
	on_blast = on_chest_blast,
	allow_metadata_inventory_move = protection_check_move,
	allow_metadata_inventory_take = protection_check_put_take,
	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
		local name = player:get_player_name()
		if minetest.is_protected(pos, name) then
			minetest.record_protection_violation(pos, name)
			return 0
		-- BEGIN OF LISTRING WORKAROUND
		elseif listname == "input" then
			local other_pos = mcl_util.get_double_container_neighbor_pos(pos, minetest.get_node(pos).param2, "right")
			local other_inv = minetest.get_inventory({type="node", pos=other_pos})
			local inv = minetest.get_inventory({type="node", pos=pos})
			--[[if other_inv:room_for_item("main", stack) then
				return -1
			else
				if inv:room_for_item("main", stack) then
					return -1
				else
					return 0
				end
			end--]]
			return limit_put(stack, other_inv, inv)
		-- END OF LISTRING WORKAROUND
		else
			return stack:get_count()
		end
	end,
	on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
		minetest.log("action", player:get_player_name()..
				" moves stuff in chest at "..minetest.pos_to_string(pos))
	end,
	on_metadata_inventory_put = function(pos, listname, index, stack, player)
		minetest.log("action", player:get_player_name()..
				" moves stuff to chest at "..minetest.pos_to_string(pos))
		-- BEGIN OF LISTRING WORKAROUND
		if listname == "input" then
			local other_pos = mcl_util.get_double_container_neighbor_pos(pos, minetest.get_node(pos).param2, "right")
			local other_inv = minetest.get_inventory({type="node", pos=other_pos})
			local inv = minetest.get_inventory({type="node", pos=pos})

			inv:set_stack("input", 1, nil)

			double_chest_add_item(other_inv, inv, "main", stack)
		end
		-- END OF LISTRING WORKAROUND
	end,
	on_metadata_inventory_take = function(pos, listname, index, stack, player)
		minetest.log("action", player:get_player_name()..
				" takes stuff from chest at "..minetest.pos_to_string(pos))
	end,
	_mcl_blast_resistance = 2.5,
	_mcl_hardness = 2.5,

	on_rightclick = function(pos, node, clicker)
		local pos_other = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "right")
		if minetest.registered_nodes[minetest.get_node({x = pos.x, y = pos.y + 1, z = pos.z}).name].groups.opaque == 1
			or minetest.registered_nodes[minetest.get_node({x = pos_other.x, y = pos_other.y + 1, z = pos_other.z}).name].groups.opaque == 1 then
				-- won't open if there is no space from the top
				return false
		end

		local name = minetest.get_meta(pos_other):get_string("name")
		if name == "" then
			name = minetest.get_meta(pos):get_string("name")
		end
		if name == "" then
			name = S("Large Chest")
		end

		minetest.show_formspec(clicker:get_player_name(),
		"mcl_chests:"..canonical_basename.."_"..pos.x.."_"..pos.y.."_"..pos.z,

		"size[9,11.5]"..
		"label[0,0;"..minetest.formspec_escape(minetest.colorize("#313131", name)).."]"..
		"list[nodemeta:"..pos_other.x..","..pos_other.y..","..pos_other.z..";main;0,0.5;9,3;]"..
		mcl_formspec.get_itemslot_bg(0,0.5,9,3)..
		"list[nodemeta:"..pos.x..","..pos.y..","..pos.z..";main;0,3.5;9,3;]"..
		mcl_formspec.get_itemslot_bg(0,3.5,9,3)..
		"label[0,7;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
		"list[current_player;main;0,7.5;9,3;9]"..
		mcl_formspec.get_itemslot_bg(0,7.5,9,3)..
		"list[current_player;main;0,10.75;9,1;]"..
		mcl_formspec.get_itemslot_bg(0,10.75,9,1)..
		-- BEGIN OF LISTRING WORKAROUND
		"listring[current_player;main]"..
		"listring[nodemeta:"..pos.x..","..pos.y..","..pos.z..";input]"..
		-- END OF LISTRING WORKAROUND
		"listring[current_player;main]"..
		"listring[nodemeta:"..pos_other.x..","..pos_other.y..","..pos_other.z..";main]"..
		"listring[current_player;main]"..
		"listring[nodemeta:"..pos.x..","..pos.y..","..pos.z..";main]")

		if on_rightclick_addendum_right then
			on_rightclick_addendum_right(pos, node, clicker)
		end

		player_chest_open(clicker, pos_other, left_name, left_textures, node.param2, true, "default_chest", "mcl_chests_chest")
	end,
	mesecons = mesecons,
	on_rotate = no_rotate,
})

if mod_doc then
	doc.add_entry_alias("nodes", small_name, "nodes", "mcl_chests:"..basename.."_left")
	doc.add_entry_alias("nodes", small_name, "nodes", "mcl_chests:"..basename.."_right")
end

-- END OF register_chest FUNCTION BODY
end

local chestusage = S("To access its inventory, rightclick it. When broken, the items will drop out.")

register_chest("chest",
	S("Chest"),
	S("Chests are containers which provide 27 inventory slots. Chests can be turned into large chests with double the capacity by placing two chests next to each other."),
	chestusage,
	S("27 inventory slots") .. "\n" .. S("Can be combined to a large chest"),
	{
		small = {"mcl_chests_normal.png"},
		double = {"mcl_chests_normal_double.png"},
		inv = {"default_chest_top.png", "mcl_chests_chest_bottom.png",
		"mcl_chests_chest_right.png", "mcl_chests_chest_left.png",
		"mcl_chests_chest_back.png", "default_chest_front.png"},
		--[[left = {"default_chest_top_big.png", "default_chest_top_big.png",
		"mcl_chests_chest_right.png", "mcl_chests_chest_left.png",
		"default_chest_side_big.png^[transformFX", "default_chest_front_big.png"},
		right = {"default_chest_top_big.png^[transformFX", "default_chest_top_big.png^[transformFX",
		"mcl_chests_chest_right.png", "mcl_chests_chest_left.png",
		"default_chest_side_big.png", "default_chest_front_big.png^[transformFX"},]]--
	},
	false
)

local traptiles = {
	small = {"mcl_chests_trapped.png"},
	double = {"mcl_chests_trapped_double.png"},
	inv = {"mcl_chests_chest_trapped_top.png", "mcl_chests_chest_trapped_bottom.png",
	"mcl_chests_chest_trapped_right.png", "mcl_chests_chest_trapped_left.png",
	"mcl_chests_chest_trapped_back.png", "mcl_chests_chest_trapped_front.png"},
	--[[left = {"mcl_chests_chest_trapped_top_big.png", "mcl_chests_chest_trapped_top_big.png",
	"mcl_chests_chest_trapped_right.png", "mcl_chests_chest_trapped_left.png",
	"mcl_chests_chest_trapped_side_big.png^[transformFX", "mcl_chests_chest_trapped_front_big.png"},
	right = {"mcl_chests_chest_trapped_top_big.png^[transformFX", "mcl_chests_chest_trapped_top_big.png^[transformFX",
	"mcl_chests_chest_trapped_right.png", "mcl_chests_chest_trapped_left.png",
	"mcl_chests_chest_trapped_side_big.png", "mcl_chests_chest_trapped_front_big.png^[transformFX"},]]--
}

register_chest("trapped_chest",
	S("Trapped Chest"),
	S("A trapped chest is a container which provides 27 inventory slots. When it is opened, it sends a redstone signal to its adjacent blocks as long it stays open. Trapped chests can be turned into large trapped chests with double the capacity by placing two trapped chests next to each other."),
	chestusage,
	S("27 inventory slots") .. "\n" .. S("Can be combined to a large chest") .. "\n" .. S("Emits a redstone signal when opened"),
	traptiles,
	nil,
	{receptor = {
		state = mesecon.state.off,
		rules = trapped_chest_mesecons_rules,
	}},
	function(pos, node, clicker)
		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_on_small", param2 = node.param2})
		find_or_create_entity(pos, "mcl_chests:trapped_chest_on_small", {"mcl_chests_trapped.png"}, node.param2, false, "default_chest", "mcl_chests_chest", "chest"):reinitialize("mcl_chests:trapped_chest_on_small")
		mesecon.receptor_on(pos, trapped_chest_mesecons_rules)
	end,
	function(pos, node, clicker)
		local meta = minetest.get_meta(pos)
		meta:set_int("players", 1)

		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_on_left", param2 = node.param2})
		find_or_create_entity(pos, "mcl_chests:trapped_chest_on_left", {"mcl_chests_trapped_double.png"}, node.param2, true, "default_chest", "mcl_chests_chest", "chest"):reinitialize("mcl_chests:trapped_chest_on_left")
		mesecon.receptor_on(pos, trapped_chest_mesecons_rules)

		local pos_other = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "left")
		minetest.swap_node(pos_other, {name="mcl_chests:trapped_chest_on_right", param2 = node.param2})
		mesecon.receptor_on(pos_other, trapped_chest_mesecons_rules)
	end,
	function(pos, node, clicker)
		local pos_other = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "right")

		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_on_right", param2 = node.param2})
		mesecon.receptor_on(pos, trapped_chest_mesecons_rules)

		minetest.swap_node(pos_other, {name="mcl_chests:trapped_chest_on_left", param2 = node.param2})
		find_or_create_entity(pos_other, "mcl_chests:trapped_chest_on_left", {"mcl_chests_trapped_double.png"}, node.param2, true, "default_chest", "mcl_chests_chest", "chest"):reinitialize("mcl_chests:trapped_chest_on_left")
		mesecon.receptor_on(pos_other, trapped_chest_mesecons_rules)
	end
)

register_chest("trapped_chest_on",
	nil, nil, nil, nil, traptiles, true,
	{receptor = {
		state = mesecon.state.on,
		rules = trapped_chest_mesecons_rules,
	}},
	nil, nil, nil,
	"trapped_chest",
	"trapped_chest"
)

local function close_if_trapped_chest(pos, player)
	local node = minetest.get_node(pos)

	if node.name == "mcl_chests:trapped_chest_on_small" then
		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_small", param2 = node.param2})
		find_or_create_entity(pos, "mcl_chests:trapped_chest_small", {"mcl_chests_trapped.png"}, node.param2, false, "default_chest", "mcl_chests_chest", "chest"):reinitialize("mcl_chests:trapped_chest_small")
		mesecon.receptor_off(pos, trapped_chest_mesecons_rules)

		player_chest_close(player)
	elseif node.name == "mcl_chests:trapped_chest_on_left" then
		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_left", param2 = node.param2})
		find_or_create_entity(pos, "mcl_chests:trapped_chest_left", {"mcl_chests_trapped_double.png"}, node.param2, true, "default_chest", "mcl_chests_chest", "chest"):reinitialize("mcl_chests:trapped_chest_left")
		mesecon.receptor_off(pos, trapped_chest_mesecons_rules)

		local pos_other = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "left")
		minetest.swap_node(pos_other, {name="mcl_chests:trapped_chest_right", param2 = node.param2})
		mesecon.receptor_off(pos_other, trapped_chest_mesecons_rules)

		player_chest_close(player)
	elseif node.name == "mcl_chests:trapped_chest_on_right" then
		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_right", param2 = node.param2})
		mesecon.receptor_off(pos, trapped_chest_mesecons_rules)

		local pos_other = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "right")
		minetest.swap_node(pos_other, {name="mcl_chests:trapped_chest_left", param2 = node.param2})
		find_or_create_entity(pos_other, "mcl_chests:trapped_chest_left", {"mcl_chests_trapped_double.png"}, node.param2, true, "default_chest", "mcl_chests_chest", "chest"):reinitialize("mcl_chests:trapped_chest_left")
		mesecon.receptor_off(pos_other, trapped_chest_mesecons_rules)

		player_chest_close(player)
	end
end

-- Disable chest when it has been closed
minetest.register_on_player_receive_fields(function(player, formname, fields)
	if formname:find("mcl_chests:") == 1 then
		if fields.quit then
			player_chest_close(player)
		end
	end
end)

minetest.register_on_leaveplayer(function(player)
	player_chest_close(player)
end)

minetest.register_craft({
	output = 'mcl_chests:chest',
	recipe = {
		{'group:wood', 'group:wood', 'group:wood'},
		{'group:wood', '', 'group:wood'},
		{'group:wood', 'group:wood', 'group:wood'},
	}
})

minetest.register_craft({
	type = 'fuel',
	recipe = 'mcl_chests:chest',
	burntime = 15
})

minetest.register_craft({
	type = 'fuel',
	recipe = 'mcl_chests:trapped_chest',
	burntime = 15
})

minetest.register_node("mcl_chests:ender_chest", {
	description = S("Ender Chest"),
	_tt_help = S("27 interdimensional inventory slots") .. "\n" .. S("Put items inside, retrieve them from any ender chest"),
	_doc_items_longdesc = S("Ender chests grant you access to a single personal interdimensional inventory with 27 slots. This inventory is the same no matter from which ender chest you access it from. If you put one item into one ender chest, you will find it in all other ender chests. Each player will only see their own items, but not the items of other players."),
	_doc_items_usagehelp = S("Rightclick the ender chest to access your personal interdimensional inventory."),
	drawtype = "mesh",
	mesh = "mcl_chests_chest.obj",
	tiles = {"mcl_chests_ender.png"},
	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
	paramtype = "light",
	paramtype2 = "facedir",
	stack_max = 64,
	groups = {deco_block=1},
	sounds = mcl_sounds.node_sound_stone_defaults(),
	on_construct = function(pos, node)
		local node = minetest.get_node(pos)
		node.name = "mcl_chests:ender_chest_small"
		minetest.set_node(pos, node)
	end,
})

local formspec_ender_chest = "size[9,8.75]"..
	"label[0,0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Ender Chest"))).."]"..
	"list[current_player;enderchest;0,0.5;9,3;]"..
	mcl_formspec.get_itemslot_bg(0,0.5,9,3)..
	"label[0,4.0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
	"list[current_player;main;0,4.5;9,3;9]"..
	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
	"list[current_player;main;0,7.74;9,1;]"..
	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
	"listring[current_player;enderchest]"..
	"listring[current_player;main]"


minetest.register_node("mcl_chests:ender_chest_small", {
	description = S("Ender Chest"),
	_tt_help = S("27 interdimensional inventory slots") .. "\n" .. S("Put items inside, retrieve them from any ender chest"),
	_doc_items_longdesc = S("Ender chests grant you access to a single personal interdimensional inventory with 27 slots. This inventory is the same no matter from which ender chest you access it from. If you put one item into one ender chest, you will find it in all other ender chests. Each player will only see their own items, but not the items of other players."),
	_doc_items_usagehelp = S("Rightclick the ender chest to access your personal interdimensional inventory."),
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
        fixed = {-0.4375, -0.5, -0.4375, 0.5, 0.375, 0.4375},
	},
	_chest_entity_textures = {"mcl_chests_ender.png"},
	_chest_entity_sound = "mcl_chests_enderchest",
	_chest_entity_mesh = "mcl_chests_chest",
	_chest_entity_animation_type = "chest",
	tiles = {"mcl_chests_blank.png"},
	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "clip" or true,
	--[[{"mcl_chests_ender_chest_top.png", "mcl_chests_ender_chest_bottom.png",
		"mcl_chests_ender_chest_right.png", "mcl_chests_ender_chest_left.png",
		"mcl_chests_ender_chest_back.png", "mcl_chests_ender_chest_front.png"},]]--
	-- Note: The “container” group is missing here because the ender chest does not
	-- have an inventory on its own
	groups = {pickaxey=1, deco_block=1, material_stone=1, chest_entity=1, not_in_creative_inventory=1},
	is_ground_content = false,
	paramtype = "light",
	light_source = 7,
	paramtype2 = "facedir",
	sounds = mcl_sounds.node_sound_stone_defaults(),
	drop = "mcl_core:obsidian 8",
	on_construct = function(pos)
		create_entity(pos, "mcl_chests:ender_chest_small", {"mcl_chests_ender.png"}, minetest.get_node(pos).param2, false, "mcl_chests_enderchest", "mcl_chests_chest", "chest")
	end,
	on_rightclick = function(pos, node, clicker)
		if minetest.registered_nodes[minetest.get_node({x = pos.x, y = pos.y + 1, z = pos.z}).name].groups.opaque == 1 then
				-- won't open if there is no space from the top
				return false
		end
		minetest.show_formspec(clicker:get_player_name(), "mcl_chests:ender_chest_"..clicker:get_player_name(), formspec_ender_chest)
		player_chest_open(clicker, pos, "mcl_chests:ender_chest_small", {"mcl_chests_ender.png"}, node.param2, false, "mcl_chests_enderchest", "mcl_chests_chest")
	end,
	on_receive_fields = function(pos, formname, fields, sender)
		if fields.quit then
			player_chest_close(sender)
		end
	end,
	_mcl_blast_resistance = 3000,
	_mcl_hardness = 22.5,
	_mcl_silk_touch_drop = {"mcl_chests:ender_chest"},
	on_rotate = simple_rotate,
})

minetest.register_on_joinplayer(function(player)
	local inv = player:get_inventory()
	inv:set_size("enderchest", 9*3)
end)

minetest.register_craft({
	output = 'mcl_chests:ender_chest',
	recipe = {
		{'mcl_core:obsidian', 'mcl_core:obsidian', 'mcl_core:obsidian'},
		{'mcl_core:obsidian', 'mcl_end:ender_eye', 'mcl_core:obsidian'},
		{'mcl_core:obsidian', 'mcl_core:obsidian', 'mcl_core:obsidian'},
	}
})

-- Shulker boxes
local boxtypes = {
	white = S("White Shulker Box"),
	grey = S("Light Grey Shulker Box"),
	orange = S("Orange Shulker Box"),
	cyan = S("Cyan Shulker Box"),
	magenta = S("Magenta Shulker Box"),
	violet = S("Purple Shulker Box"),
	lightblue = S("Light Blue Shulker Box"),
	blue = S("Blue Shulker Box"),
	yellow = S("Yellow Shulker Box"),
	brown = S("Brown Shulker Box"),
	green = S("Lime Shulker Box"),
	dark_green = S("Green Shulker Box"),
	pink = S("Pink Shulker Box"),
	red = S("Red Shulker Box"),
	dark_grey = S("Grey Shulker Box"),
	black = S("Black Shulker Box"),
}

local shulker_mob_textures = {
	white = "mobs_mc_shulker_white.png",
	grey = "mobs_mc_shulker_silver.png",
	orange = "mobs_mc_shulker_orange.png",
	cyan = "mobs_mc_shulker_cyan.png",
	magenta = "mobs_mc_shulker_magenta.png",
	violet = "mobs_mc_shulker_purple.png",
	lightblue = "mobs_mc_shulker_light_blue.png",
	blue = "mobs_mc_shulker_blue.png",
	yellow = "mobs_mc_shulker_yellow.png",
	brown = "mobs_mc_shulker_brown.png",
	green = "mobs_mc_shulker_lime.png",
	dark_green = "mobs_mc_shulker_green.png",
	pink = "mobs_mc_shulker_pink.png",
	red = "mobs_mc_shulker_red.png",
	dark_grey = "mobs_mc_shulker_gray.png",
	black = "mobs_mc_shulker_black.png",
}
local canonical_shulker_color = "violet"

local function formspec_shulker_box(name)
	if name == "" then
		name = S("Shulker Box")
	end
	return "size[9,8.75]"..
	"label[0,0;"..minetest.formspec_escape(minetest.colorize("#313131", name)).."]"..
	"list[current_name;main;0,0.5;9,3;]"..
	mcl_formspec.get_itemslot_bg(0,0.5,9,3)..
	"label[0,4.0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
	"list[current_player;main;0,4.5;9,3;9]"..
	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
	"list[current_player;main;0,7.74;9,1;]"..
	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
	"listring[current_name;main]"..
	"listring[current_player;main]"
end

local function set_shulkerbox_meta(nmeta, imeta)
	local name = imeta:get_string("name")
	nmeta:set_string("description", imeta:get_string("description"))
	nmeta:set_string("name", name)
	nmeta:set_string("formspec", formspec_shulker_box(name))
end

for color, desc in pairs(boxtypes) do
	local mob_texture = shulker_mob_textures[color]
	local is_canonical = color == canonical_shulker_color
	local longdesc, usagehelp, create_entry, entry_name
	if mod_doc then
		if is_canonical then
			longdesc = S("A shulker box is a portable container which provides 27 inventory slots for any item except shulker boxes. Shulker boxes keep their inventory when broken, so shulker boxes as well as their contents can be taken as a single item. Shulker boxes come in many different colors.")
			usagehelp = S("To access the inventory of a shulker box, place and right-click it. To take a shulker box and its contents with you, just break and collect it, the items will not fall out.")
			entry_name = S("Shulker Box")
		else
			create_entry = false
		end
	end

	local small_name = "mcl_chests:"..color.."_shulker_box_small"

	minetest.register_node("mcl_chests:"..color.."_shulker_box", {
		description = desc,
		_tt_help = S("27 inventory slots") .. "\n" .. S("Can be carried around with its contents"),
		_doc_items_create_entry = create_entry,
		_doc_items_entry_name = entry_name,
		_doc_items_longdesc = longdesc,
		_doc_items_usagehelp = usagehelp,
		tiles = {mob_texture},
		use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
		drawtype = "mesh",
		mesh = "mcl_chests_shulker.obj",
		--[["mcl_chests_"..color.."_shulker_box_top.png", -- top
			"[combine:16x16:-32,-28="..mob_texture, -- bottom
			"[combine:16x16:0,-36="..mob_texture..":0,-16="..mob_texture, -- side
			"[combine:16x16:-32,-36="..mob_texture..":-32,-16="..mob_texture, -- side
			"[combine:16x16:-16,-36="..mob_texture..":-16,-16="..mob_texture, -- side
			"[combine:16x16:-48,-36="..mob_texture..":-48,-16="..mob_texture, -- side]]--
		groups = {handy=1,pickaxey=1, container=3, deco_block=1, dig_by_piston=1, shulker_box=1, old_shulker_box_node=1},
		is_ground_content = false,
		sounds = mcl_sounds.node_sound_stone_defaults(),
		stack_max = 1,
		drop = "",
		paramtype = "light",
		paramtype2 = "facedir",
		on_construct = function(pos)
			local node = minetest.get_node(pos)
			node.name = small_name
			minetest.set_node(pos, node)
		end,
		after_place_node = function(pos, placer, itemstack, pointed_thing)
			local nmeta = minetest.get_meta(pos)
			local imetadata = itemstack:get_metadata()
			local iinv_main = minetest.deserialize(imetadata)
			local ninv = nmeta:get_inventory()
			ninv:set_list("main", iinv_main)
			ninv:set_size("main", 9*3)
			set_shulkerbox_meta(nmeta, itemstack:get_meta())

			if minetest.is_creative_enabled(placer:get_player_name()) then
				if not ninv:is_empty("main") then
					return nil
				else
					return itemstack
				end
			else
				return nil
			end
		end,
		_on_dispense = function(stack, pos, droppos, dropnode, dropdir)
			-- Place shulker box as node
			if minetest.registered_nodes[dropnode.name].buildable_to then
				minetest.set_node(droppos, {name = small_name, param2 = minetest.dir_to_facedir(dropdir)})
				local ninv = minetest.get_inventory({type="node", pos=droppos})
				local imetadata = stack:get_metadata()
				local iinv_main = minetest.deserialize(imetadata)
				ninv:set_list("main", iinv_main)
				ninv:set_size("main", 9*3)
				set_shulkerbox_meta(minetest.get_meta(droppos), stack:get_meta())
				stack:take_item()
			end
			return stack
		end,
	})

	minetest.register_node(small_name, {
		description = desc,
		_tt_help = S("27 inventory slots") .. "\n" .. S("Can be carried around with its contents"),
		_doc_items_create_entry = create_entry,
		_doc_items_entry_name = entry_name,
		_doc_items_longdesc = longdesc,
		_doc_items_usagehelp = usagehelp,
		drawtype = "nodebox",
		tiles = {"mcl_chests_blank.png"},
		use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "clip" or true,
		_chest_entity_textures = {mob_texture},
		_chest_entity_sound = "mcl_chests_shulker",
		_chest_entity_mesh = "mcl_chests_shulker",
		_chest_entity_animation_type = "shulker",
		groups = {handy=1,pickaxey=1, container=3, deco_block=1, dig_by_piston=1, shulker_box=1, chest_entity=1, not_in_creative_inventory=1},
		is_ground_content = false,
		sounds = mcl_sounds.node_sound_stone_defaults(),
		stack_max = 1,
		drop = "",
		paramtype = "light",
		paramtype2 = "facedir",
--		TODO: Make shulker boxes rotatable
--		This doesn't work, it just destroys the inventory:
--		on_place = minetest.rotate_node,
		on_construct = function(pos)
			local meta = minetest.get_meta(pos)
			meta:set_string("formspec", formspec_shulker_box(nil))
			local inv = meta:get_inventory()
			inv:set_size("main", 9*3)
			create_entity(pos, small_name, {mob_texture}, minetest.get_node(pos).param2, false, "mcl_chests_shulker", "mcl_chests_shulker", "shulker")
		end,
		after_place_node = function(pos, placer, itemstack, pointed_thing)
			local nmeta = minetest.get_meta(pos)
			local imetadata = itemstack:get_metadata()
			local iinv_main = minetest.deserialize(imetadata)
			local ninv = nmeta:get_inventory()
			ninv:set_list("main", iinv_main)
			ninv:set_size("main", 9*3)
			set_shulkerbox_meta(nmeta, itemstack:get_meta())

			if minetest.is_creative_enabled(placer:get_player_name()) then
				if not ninv:is_empty("main") then
					return nil
				else
					return itemstack
				end
			else
				return nil
			end
		end,
		on_rightclick = function(pos, node, clicker)
			 player_chest_open(clicker, pos, small_name, {mob_texture}, node.param2, false, "mcl_chests_shulker", "mcl_chests_shulker", true)
		end,
		on_receive_fields = function(pos, formname, fields, sender)
			if fields.quit then
				player_chest_close(sender)
			end
		end,
		on_destruct = function(pos)
			local meta = minetest.get_meta(pos)
			local inv = meta:get_inventory()
			local items = {}
			for i=1, inv:get_size("main") do
				local stack = inv:get_stack("main", i)
				items[i] = stack:to_string()
			end
			local data = minetest.serialize(items)
			local boxitem = ItemStack("mcl_chests:"..color.."_shulker_box")
			local boxitem_meta = boxitem:get_meta()
			boxitem_meta:set_string("description", meta:get_string("description"))
			boxitem_meta:set_string("name", meta:get_string("name"))
			boxitem:set_metadata(data)

			if minetest.is_creative_enabled("") then
				if not inv:is_empty("main") then
					minetest.add_item(pos, boxitem)
				end
			else
				minetest.add_item(pos, boxitem)
			end
		end,
		allow_metadata_inventory_move = protection_check_move,
		allow_metadata_inventory_take = protection_check_put_take,
		allow_metadata_inventory_put = function(pos, listname, index, stack, player)
			local name = player:get_player_name()
			if minetest.is_protected(pos, name) then
				minetest.record_protection_violation(pos, name)
				return 0
			end
			-- Do not allow to place shulker boxes into shulker boxes
			local group = minetest.get_item_group(stack:get_name(), "shulker_box")
			if group == 0 or group == nil then
				return stack:get_count()
			else
				return 0
			end
		end,
		_mcl_blast_resistance = 6,
		_mcl_hardness = 2,
	})

	if mod_doc and not is_canonical then
		doc.add_entry_alias("nodes", "mcl_chests:"..canonical_shulker_color.."_shulker_box", "nodes", "mcl_chests:"..color.."_shulker_box")
		doc.add_entry_alias("nodes", "mcl_chests:"..canonical_shulker_color.."_shulker_box_small", "nodes", "mcl_chests:"..color.."_shulker_box_small")
	end

	minetest.register_craft({
		type = "shapeless",
		output = 'mcl_chests:'..color..'_shulker_box',
		recipe = { 'group:shulker_box', 'mcl_dye:'..color }
	})
end

minetest.register_craft({
	output = 'mcl_chests:violet_shulker_box',
	recipe = {
		{'mcl_mobitems:shulker_shell'},
		{'mcl_chests:chest'},
		{'mcl_mobitems:shulker_shell'},
	}
})

-- Save metadata of shulker box when used in crafting
minetest.register_on_craft(function(itemstack, player, old_craft_grid, craft_inv)
	local new = itemstack:get_name()
	if minetest.get_item_group(itemstack:get_name(), "shulker_box") ~= 1 then
		return
	end
	local original
	for i = 1, #old_craft_grid do
		local item = old_craft_grid[i]:get_name()
		if minetest.get_item_group(item, "shulker_box") == 1 then
			original = old_craft_grid[i]
			break
		end
	end
	if original then
		local ometa = original:get_meta():to_table()
		local nmeta = itemstack:get_meta()
		nmeta:from_table(ometa)
		return itemstack
	end
end)

local function select_and_spawn_entity(pos, node)
	local node_name = node.name
	local node_def = minetest.registered_nodes[node_name]
	local double_chest = minetest.get_item_group(node_name, "double_chest") > 0
	find_or_create_entity(pos, node_name, node_def._chest_entity_textures, node.param2, double_chest, node_def._chest_entity_sound, node_def._chest_entity_mesh, node_def._chest_entity_animation_type)
end

minetest.register_lbm({
	label = "Spawn Chest entities",
	name = "mcl_chests:spawn_chest_entities",
	nodenames = {"group:chest_entity"},
	run_at_every_load = true,
	action = select_and_spawn_entity,
})

minetest.register_lbm({
	label = "Replace old chest nodes",
	name = "mcl_chests:replace_old",
	nodenames = {"mcl_chests:chest", "mcl_chests:trapped_chest", "mcl_chests:trapped_chest_on", "mcl_chests:ender_chest", "group:old_shulker_box_node"},
	run_at_every_load = true,
	action = function(pos, node)
		local node_name = node.name
		node.name = node_name .. "_small"
		minetest.swap_node(pos, node)
		select_and_spawn_entity(pos, node)
		if node_name == "mcl_chests:trapped_chest_on" then
			minetest.log("action", "[mcl_chests] Disabled active trapped chest on load: " ..minetest.pos_to_string(pos))
			chest_update_after_close(pos)
		elseif node_name == "mcl_chests:ender_chest" then
			local meta = minetest.get_meta(pos)
			meta:set_string("formspec", formspec_ender_chest)
		end
	end
})

minetest.register_lbm({
	-- Disable active/open trapped chests when loaded because nobody could
	-- have them open at loading time.
	-- Fixes redstone weirdness.
	label = "Disable active trapped chests",
	name = "mcl_chests:reset_trapped_chests",
	nodenames = { "mcl_chests:trapped_chest_on_small", "mcl_chests:trapped_chest_on_left", "mcl_chests:trapped_chest_on_right" },
	run_at_every_load = true,
	action = function(pos, node)
		minetest.log("action", "[mcl_chests] Disabled active trapped chest on load: " ..minetest.pos_to_string(pos))
		chest_update_after_close(pos)
	end,
})

minetest.register_lbm({
	label = "Update shulker box formspecs (0.60.0)",
	name = "mcl_chests:update_shulker_box_formspecs_0_60_0",
	nodenames = { "group:shulker_box" },
	run_at_every_load = false,
	action = function(pos, node)
		local meta = minetest.get_meta(pos)
		meta:set_string("formspec", formspec_shulker_box)
	end,
})

minetest.register_lbm({
	label = "Upgrade old ender chest formspec",
    name = "mcl_chests:replace_old_ender_form",
    nodenames = {"mcl_chests:ender_chest_small"},
    run_at_every_load = false,
    action = function(pos, node)
		minetest.get_meta(pos):set_string("formspec", "")
    end,
})