minetest.register_privilege("worldedit", "Can use WorldEdit commands")

--wip: fold the hollow stuff into the main functions and add a hollow flag at the end, then add the compatibility stuff

worldedit.set_pos = {}
worldedit.inspect = {}

worldedit.pos1 = {}
worldedit.pos2 = {}
if minetest.place_schematic then
	worldedit.prob_pos = {}
	worldedit.prob_list = {}
end

dofile(minetest.get_modpath("worldedit_commands") .. "/mark.lua")
dofile(minetest.get_modpath("worldedit_commands") .. "/safe.lua")

local get_position = function(name)
	local pos1 = worldedit.pos1[name]
	if pos1 == nil then
		worldedit.player_notify(name, "no position 1 selected")
	end
	return pos1
end

local get_node = function(name, nodename)
	local node = worldedit.normalize_nodename(nodename)
	if not node then
		worldedit.player_notify(name, "invalid node name: " .. nodename)
		return nil
	end
	return node
end

worldedit.player_notify = function(name, message)
	minetest.chat_send_player(name, "WorldEdit -!- " .. message, false)
end

--determines whether `nodename` is a valid node name, returning a boolean
worldedit.normalize_nodename = function(nodename)
	if nodename == "" then return nil end
	local fullname = ItemStack({name=nodename}):get_name() --resolve aliases of node names to full names
	if minetest.registered_nodes[fullname] or fullname == "air" then --directly found node name or alias of nodename
		return fullname
	end
	for key, value in pairs(minetest.registered_nodes) do
		if key:find(":" .. nodename, 1, true) then --found in mod
			return key
		end
	end
	nodename = nodename:lower() --lowercase both for case insensitive comparison
	for key, value in pairs(minetest.registered_nodes) do
		if value.description:lower() == nodename then --found in description
			return key
		end
	end
	return nil
end

--determines the axis in which a player is facing, returning an axis ("x", "y", or "z") and the sign (1 or -1)
worldedit.player_axis = function(name)
	local dir = minetest.get_player_by_name(name):get_look_dir()
	local x, y, z = math.abs(dir.x), math.abs(dir.y), math.abs(dir.z)
	if x > y then
		if x > z then
			return "x", dir.x > 0 and 1 or -1
		end
	elseif y > z then
		return "y", dir.y > 0 and 1 or -1
	end
	return "z", dir.z > 0 and 1 or -1
end

minetest.register_chatcommand("/about", {
	params = "",
	description = "Get information about the mod",
	func = function(name, param)
		worldedit.player_notify(name, "WorldEdit " .. worldedit.version_string .. " is available on this server. Type /help to get a list of commands, or get more information at https://github.com/Uberi/MineTest-WorldEdit/")
	end,
})

minetest.register_chatcommand("/inspect", {
	params = "on/off/1/0/true/false/yes/no/enable/disable/<blank>",
	description = "Enable or disable node inspection",
	privs = {worldedit=true},
	func = function(name, param)
		if param == "on" or param == "1" or param == "true" or param == "yes" or param == "enable" or param == "" then
			worldedit.inspect[name] = true
			local axis, sign = worldedit.player_axis(name)
			worldedit.player_notify(name, string.format("inspector: inspection enabled for %s, currently facing the %s axis",
				name, axis .. (sign > 0 and "+" or "-")))
		elseif param == "off" or param == "0" or param == "false" or param == "no" or param == "disable" then
			worldedit.inspect[name] = nil
			worldedit.player_notify(name, "inspector: inspection disabled")
		else
			worldedit.player_notify(name, "invalid usage: " .. param)
		end
	end,
})

minetest.register_on_punchnode(function(pos, node, puncher)
	local name = puncher:get_player_name()
	if worldedit.inspect[name] then
		if minetest.check_player_privs(name, {worldedit=true}) then
			local axis, sign = worldedit.player_axis(name)
			message = string.format("inspector: %s at %s (param1=%d, param2=%d) punched by %s facing the %s axis",
				node.name, minetest.pos_to_string(pos), node.param1, node.param2, name, axis .. (sign > 0 and "+" or "-"))
		else
			message = "inspector: worldedit privileges required"
		end
		worldedit.player_notify(name, message)
	end
end)

minetest.register_chatcommand("/reset", {
	params = "",
	description = "Reset the region so that it is empty",
	privs = {worldedit=true},
	func = function(name, param)
		worldedit.pos1[name] = nil
		worldedit.pos2[name] = nil
		worldedit.mark_pos1(name)
		worldedit.mark_pos2(name)
		worldedit.set_pos[name] = nil
		worldedit.player_notify(name, "region reset")
	end,
})

minetest.register_chatcommand("/mark", {
	params = "",
	description = "Show markers at the region positions",
	privs = {worldedit=true},
	func = function(name, param)
		worldedit.mark_pos1(name)
		worldedit.mark_pos2(name)
		worldedit.player_notify(name, "region marked")
	end,
})

minetest.register_chatcommand("/unmark", {
	params = "",
	description = "Hide markers if currently shown",
	privs = {worldedit=true},
	func = function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		worldedit.pos1[name] = nil
		worldedit.pos2[name] = nil
		worldedit.mark_pos1(name)
		worldedit.mark_pos2(name)
		worldedit.pos1[name] = pos1
		worldedit.pos2[name] = pos2
		worldedit.player_notify(name, "region unmarked")
	end,
})

minetest.register_chatcommand("/pos1", {
	params = "",
	description = "Set WorldEdit region position 1 to the player's location",
	privs = {worldedit=true},
	func = function(name, param)
		local pos = minetest.get_player_by_name(name):getpos()
		pos.x, pos.y, pos.z = math.floor(pos.x + 0.5), math.floor(pos.y + 0.5), math.floor(pos.z + 0.5)
		worldedit.pos1[name] = pos
		worldedit.mark_pos1(name)
		worldedit.player_notify(name, "position 1 set to " .. minetest.pos_to_string(pos))
	end,
})

minetest.register_chatcommand("/pos2", {
	params = "",
	description = "Set WorldEdit region position 2 to the player's location",
	privs = {worldedit=true},
	func = function(name, param)
		local pos = minetest.get_player_by_name(name):getpos()
		pos.x, pos.y, pos.z = math.floor(pos.x + 0.5), math.floor(pos.y + 0.5), math.floor(pos.z + 0.5)
		worldedit.pos2[name] = pos
		worldedit.mark_pos2(name)
		worldedit.player_notify(name, "position 2 set to " .. minetest.pos_to_string(pos))
	end,
})

minetest.register_chatcommand("/p", {
	params = "set/set1/set2/get",
	description = "Set WorldEdit region, WorldEdit position 1, or WorldEdit position 2 by punching nodes, or display the current WorldEdit region",
	privs = {worldedit=true},
	func = function(name, param)
		if param == "set" then --set both WorldEdit positions
			worldedit.set_pos[name] = "pos1"
			worldedit.player_notify(name, "select positions by punching two nodes")
		elseif param == "set1" then --set WorldEdit position 1
			worldedit.set_pos[name] = "pos1only"
			worldedit.player_notify(name, "select position 1 by punching a node")
		elseif param == "set2" then --set WorldEdit position 2
			worldedit.set_pos[name] = "pos2"
			worldedit.player_notify(name, "select position 2 by punching a node")
		elseif param == "get" then --display current WorldEdit positions
			if worldedit.pos1[name] ~= nil then
				worldedit.player_notify(name, "position 1: " .. minetest.pos_to_string(worldedit.pos1[name]))
			else
				worldedit.player_notify(name, "position 1 not set")
			end
			if worldedit.pos2[name] ~= nil then
				worldedit.player_notify(name, "position 2: " .. minetest.pos_to_string(worldedit.pos2[name]))
			else
				worldedit.player_notify(name, "position 2 not set")
			end
		else
			worldedit.player_notify(name, "unknown subcommand: " .. param)
		end
	end,
})

minetest.register_chatcommand("/fixedpos", {
	params = "set1/set2 x y z",
	description = "Set a WorldEdit region position to the position at (<x>, <y>, <z>)",
	privs = {worldedit=true},
	func = function(name, param)
		local found, _, flag, x, y, z = param:find("^(set[12])%s+([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)$")
		if found == nil then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return
		end
		local pos = {x=tonumber(x), y=tonumber(y), z=tonumber(z)}
		if flag == "set1" then
			worldedit.pos1[name] = pos
			worldedit.mark_pos1(name)
			worldedit.player_notify(name, "position 1 set to " .. minetest.pos_to_string(pos))
		else --flag == "set2"
			worldedit.pos2[name] = pos
			worldedit.mark_pos2(name)
			worldedit.player_notify(name, "position 2 set to " .. minetest.pos_to_string(pos))
		end
	end,
})

minetest.register_on_punchnode(function(pos, node, puncher)
	local name = puncher:get_player_name()
	if name ~= "" and worldedit.set_pos[name] ~= nil then --currently setting position
		if worldedit.set_pos[name] == "pos1" then --setting position 1
			worldedit.pos1[name] = pos
			worldedit.mark_pos1(name)
			worldedit.set_pos[name] = "pos2" --set position 2 on the next invocation
			worldedit.player_notify(name, "position 1 set to " .. minetest.pos_to_string(pos))
		elseif worldedit.set_pos[name] == "pos1only" then --setting position 1 only
			worldedit.pos1[name] = pos
			worldedit.mark_pos1(name)
			worldedit.set_pos[name] = nil --finished setting positions
			worldedit.player_notify(name, "position 1 set to " .. minetest.pos_to_string(pos))
		elseif worldedit.set_pos[name] == "pos2" then --setting position 2
			worldedit.pos2[name] = pos
			worldedit.mark_pos2(name)
			worldedit.set_pos[name] = nil --finished setting positions
			worldedit.player_notify(name, "position 2 set to " .. minetest.pos_to_string(pos))
		elseif worldedit.set_pos[name] == "prob" then --setting Minetest schematic node probabilities
			worldedit.prob_pos[name] = pos
			minetest.show_formspec(puncher:get_player_name(), "prob_val_enter", "field[text;;]")
		end
	end
end)

minetest.register_chatcommand("/volume", {
	params = "",
	description = "Display the volume of the current WorldEdit region",
	privs = {worldedit=true},
	func = function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		if pos1 == nil or pos2 == nil then
			worldedit.player_notify(name, "no region selected")
			return nil
		end

		local volume = worldedit.volume(pos1, pos2)
		local abs = math.abs
		worldedit.player_notify(name, "current region has a volume of " .. volume .. " nodes ("
			.. abs(pos2.x - pos1.x) + 1 .. "*"
			.. abs(pos2.y - pos1.y) + 1 .. "*"
			.. abs(pos2.z - pos1.z) + 1 .. ")")
	end,
})

local check_set = function(name, param)
	local node = get_node(name, param)
	if not node then return nil end
	return check_region(name, param)
end

minetest.register_chatcommand("/set", {
	params = "<node>",
	description = "Set the current WorldEdit region to <node>",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local node = get_node(name, param)
		local count = worldedit.set(pos1, pos2, node)
		worldedit.player_notify(name, count .. " nodes set")
	end, check_set),
})

local check_replace = function(name, param)
	local found, _, searchnode, replacenode = param:find("^([^%s]+)%s+(.+)$")
	if found == nil then
		worldedit.player_notify(name, "invalid usage: " .. param)
		return nil
	end
	local newsearchnode = worldedit.normalize_nodename(searchnode)
	if not newsearchnode then
		worldedit.player_notify(name, "invalid search node name: " .. searchnode)
		return nil
	end
	local newreplacenode = worldedit.normalize_nodename(replacenode)
	if not newreplacenode then
		worldedit.player_notify(name, "invalid replace node name: " .. replacenode)
		return nil
	end
	return check_region(name, param)
end

minetest.register_chatcommand("/replace", {
	params = "<search node> <replace node>",
	description = "Replace all instances of <search node> with <replace node> in the current WorldEdit region",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local found, _, searchnode, replacenode = param:find("^([^%s]+)%s+(.+)$")
		local newsearchnode = worldedit.normalize_nodename(searchnode)
		local newreplacenode = worldedit.normalize_nodename(replacenode)
		local count = worldedit.replace(pos1, pos2, newsearchnode, newreplacenode)
		worldedit.player_notify(name, count .. " nodes replaced")
	end, check_replace),
})

minetest.register_chatcommand("/replaceinverse", {
	params = "<search node> <replace node>",
	description = "Replace all nodes other than <search node> with <replace node> in the current WorldEdit region",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local found, _, searchnode, replacenode = param:find("^([^%s]+)%s+(.+)$")
		local newsearchnode = worldedit.normalize_nodename(searchnode)
		local newreplacenode = worldedit.normalize_nodename(replacenode)
		local count = worldedit.replaceinverse(pos1, pos2, searchnode, replacenode)
		worldedit.player_notify(name, count .. " nodes replaced")
	end, check_replace),
})

local check_sphere = function(name, param)
	if worldedit.pos1[name] == nil then
		worldedit.player_notify(name, "no position 1 selected")
		return nil
	end
	local found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
	if found == nil then
		worldedit.player_notify(name, "invalid usage: " .. param)
		return nil
	end
	local node = get_node(name, nodename)
	if not node then return nil end
	return math.ceil((4 * math.pi * (tonumber(radius) ^ 3)) / 3) --volume of sphere
end

minetest.register_chatcommand("/hollowsphere", {
	params = "<radius> <node>",
	description = "Add hollow sphere centered at WorldEdit position 1 with radius <radius>, composed of <node>",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos = worldedit.pos1[name]
		local found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
		local node = get_node(name, nodename)
		local count = worldedit.hollow_sphere(pos, tonumber(radius), node)
		worldedit.player_notify(name, count .. " nodes added")
	end, check_sphere),
})

minetest.register_chatcommand("/sphere", {
	params = "<radius> <node>",
	description = "Add sphere centered at WorldEdit position 1 with radius <radius>, composed of <node>",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos = worldedit.pos1[name]
		local found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
		local node = get_node(name, nodename)
		local count = worldedit.sphere(pos, tonumber(radius), node)
		worldedit.player_notify(name, count .. " nodes added")
	end, check_sphere),
})

local check_dome = function(name, param)
	if worldedit.pos1[name] == nil then
		worldedit.player_notify(name, "no position 1 selected")
		return nil
	end
	local found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
	if found == nil then
		worldedit.player_notify(name, "invalid usage: " .. param)
		return nil
	end
	local node = get_node(name, nodename)
	if not node then return nil end
	return math.ceil((2 * math.pi * (tonumber(radius) ^ 3)) / 3) --volume of dome
end

minetest.register_chatcommand("/hollowdome", {
	params = "<radius> <node>",
	description = "Add hollow dome centered at WorldEdit position 1 with radius <radius>, composed of <node>",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos = worldedit.pos1[name]
		local found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
		local node = get_node(name, nodename)
		local count = worldedit.hollow_dome(pos, tonumber(radius), node)
		worldedit.player_notify(name, count .. " nodes added")
	end, check_dome),
})

minetest.register_chatcommand("/dome", {
	params = "<radius> <node>",
	description = "Add dome centered at WorldEdit position 1 with radius <radius>, composed of <node>",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos = worldedit.pos1[name]
		local found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
		local node = get_node(name, nodename)
		local count = worldedit.dome(pos, tonumber(radius), node)
		worldedit.player_notify(name, count .. " nodes added")
	end, check_dome),
})

local check_cylinder = function(name, param)
	if worldedit.pos1[name] == nil then
		worldedit.player_notify(name, "no position 1 selected")
		return nil
	end
	local found, _, axis, length, radius, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(%d+)%s+(.+)$")
	if found == nil then
		worldedit.player_notify(name, "invalid usage: " .. param)
		return nil
	end
	local node = get_node(name, nodename)
	if not node then return nil end
	return math.ceil(math.pi * (tonumber(radius) ^ 2) * tonumber(length))
end

minetest.register_chatcommand("/hollowcylinder", {
	params = "x/y/z/? <length> <radius> <node>",
	description = "Add hollow cylinder at WorldEdit position 1 along the x/y/z/? axis with length <length> and radius <radius>, composed of <node>",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos = worldedit.pos1[name]
		local found, _, axis, length, radius, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(%d+)%s+(.+)$")
		length = tonumber(length)
		if axis == "?" then
			axis, sign = worldedit.player_axis(name)
			length = length * sign
		end
		local node = get_node(name, nodename)
		local count = worldedit.hollow_cylinder(pos, axis, length, tonumber(radius), node)
		worldedit.player_notify(name, count .. " nodes added")
	end, check_cylinder),
})

minetest.register_chatcommand("/cylinder", {
	params = "x/y/z/? <length> <radius> <node>",
	description = "Add cylinder at WorldEdit position 1 along the x/y/z/? axis with length <length> and radius <radius>, composed of <node>",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos = worldedit.pos1[name]
		local found, _, axis, length, radius, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(%d+)%s+(.+)$")
		length = tonumber(length)
		if axis == "?" then
			axis, sign = worldedit.player_axis(name)
			length = length * sign
		end
		local node = get_node(name, nodename)
		local count = worldedit.cylinder(pos, axis, length, tonumber(radius), node)
		worldedit.player_notify(name, count .. " nodes added")
	end, check_cylinder),
})

minetest.register_chatcommand("/pyramid", {
	params = "x/y/z/? <height> <node>",
	description = "Add pyramid centered at WorldEdit position 1 along the x/y/z/? axis with height <height>, composed of <node>",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos = get_position(name)
		local found, _, axis, height, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(.+)$")
		height = tonumber(height)
		if axis == "?" then
			axis, sign = worldedit.player_axis(name)
			height = height * sign
		end
		local node = get_node(name, nodename)
		local count = worldedit.pyramid(pos, axis, height, node)
		worldedit.player_notify(name, count .. " nodes added")
	end,
	function(name, param)
		if worldedit.pos1[name] == nil then
			worldedit.player_notify(name, "no position 1 selected")
			return nil
		end
		local found, _, axis, height, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(.+)$")
		if found == nil then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return nil
		end
		local node = get_node(name, nodename)
		if not node then return nil end
		height = tonumber(height)
		return math.ceil(((height * 2 + 1) ^ 2) * height / 3)
	end),
})

minetest.register_chatcommand("/spiral", {
	params = "<length> <height> <space> <node>",
	description = "Add spiral centered at WorldEdit position 1 with side length <length>, height <height>, space between walls <space>, composed of <node>",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos = worldedit.pos1[name]
		local found, _, length, height, space, nodename = param:find("^(%d+)%s+(%d+)%s+(%d+)%s+(.+)$")
		local node = get_node(name, nodename)
		local count = worldedit.spiral(pos, tonumber(length), tonumber(height), tonumber(space), node)
		worldedit.player_notify(name, count .. " nodes added")
	end,
	function(name, param)
		if worldedit.pos1[name] == nil then
			worldedit.player_notify(name, "no position 1 selected")
			return nil
		end
		local found, _, length, height, space, nodename = param:find("^(%d+)%s+(%d+)%s+(%d+)%s+(.+)$")
		if found == nil then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return nil
		end
		local node = get_node(name, nodename)
		if not node then return nil end
		return check_region(name, param)
	end),
})

minetest.register_chatcommand("/copy", {
	params = "x/y/z/? <amount>",
	description = "Copy the current WorldEdit region along the x/y/z/? axis by <amount> nodes",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local found, _, axis, amount = param:find("^([xyz%?])%s+([+-]?%d+)$")
		if found == nil then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return
		end
		amount = tonumber(amount)
		if axis == "?" then
			axis, sign = worldedit.player_axis(name)
			amount = amount * sign
		end

		local count = worldedit.copy(pos1, pos2, axis, amount)
		worldedit.player_notify(name, count .. " nodes copied")
	end,
	function(name, param)
		local volume = check_region(name, param)
		return volume and volume * 2 or volume
	end),
})

minetest.register_chatcommand("/move", {
	params = "x/y/z/? <amount>",
	description = "Move the current WorldEdit region along the x/y/z/? axis by <amount> nodes",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local found, _, axis, amount = param:find("^([xyz%?])%s+([+-]?%d+)$")
		if found == nil then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return
		end
		amount = tonumber(amount)
		if axis == "?" then
			axis, sign = worldedit.player_axis(name)
			amount = amount * sign
		end

		local count = worldedit.move(pos1, pos2, axis, amount)

		pos1[axis] = pos1[axis] + amount
		pos2[axis] = pos2[axis] + amount
		worldedit.mark_pos1(name)
		worldedit.mark_pos2(name)
		worldedit.player_notify(name, count .. " nodes moved")
	end, check_region),
})

minetest.register_chatcommand("/stack", {
	params = "x/y/z/? <count>",
	description = "Stack the current WorldEdit region along the x/y/z/? axis <count> times",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local found, _, axis, repetitions = param:find("^([xyz%?])%s+([+-]?%d+)$")
		repetitions = tonumber(repetitions)
		if axis == "?" then
			axis, sign = worldedit.player_axis(name)
			repetitions = repetitions * sign
		end
		local count = worldedit.stack(pos1, pos2, axis, repetitions)
		worldedit.player_notify(name, count .. " nodes stacked")
	end,
	function(name, param)
		local found, _, axis, repetitions = param:find("^([xyz%?])%s+([+-]?%d+)$")
		if found == nil then
			worldedit.player_notify(name, "invalid usage: " .. param)
		end
		local count = check_region(name, param)
		if count then return (tonumber(repetitions) + 1) * count end
		return nil
	end),
})

minetest.register_chatcommand("/stretch", {
	params = "<stretchx> <stretchy> <stretchz>",
	description = "Scale the current WorldEdit positions and region by a factor of <stretchx>, <stretchy>, <stretchz> along the X, Y, and Z axes, repectively, with position 1 as the origin",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local found, _, stretchx, stretchy, stretchz = param:find("^(%d+)%s+(%d+)%s+(%d+)$")
		stretchx, stretchy, stretchz = tonumber(stretchx), tonumber(stretchy), tonumber(stretchz)
		local count, pos1, pos2 = worldedit.stretch(pos1, pos2, stretchx, stretchy, stretchz)

		--reset markers to scaled positions
		worldedit.pos1[name] = pos1
		worldedit.pos2[name] = pos2
		worldedit.mark_pos1(name)
		worldedit.mark_pos2(name)

		worldedit.player_notify(name, count .. " nodes stretched")
	end,
	function(name, param)
		local found, _, stretchx, stretchy, stretchz = param:find("^(%d+)%s+(%d+)%s+(%d+)$")
		if found == nil then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return nil
		end
		stretchx, stretchy, stretchz = tonumber(stretchx), tonumber(stretchy), tonumber(stretchz)
		if stretchx == 0 or stretchy == 0 or stretchz == 0 then
			worldedit.player_notify(name, "invalid scaling factors: " .. param)
		end
		local count = check_region(name, param)
		if count then return tonumber(stretchx) * tonumber(stretchy) * tonumber(stretchz) * count end
		return nil
	end),
})

minetest.register_chatcommand("/transpose", {
	params = "x/y/z/? x/y/z/?",
	description = "Transpose the current WorldEdit region along the x/y/z/? and x/y/z/? axes",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local found, _, axis1, axis2 = param:find("^([xyz%?])%s+([xyz%?])$")
		if axis1 == "?" then axis1 = worldedit.player_axis(name) end
		if axis2 == "?" then axis2 = worldedit.player_axis(name) end
		local count, pos1, pos2 = worldedit.transpose(pos1, pos2, axis1, axis2)

		--reset markers to transposed positions
		worldedit.pos1[name] = pos1
		worldedit.pos2[name] = pos2
		worldedit.mark_pos1(name)
		worldedit.mark_pos2(name)

		worldedit.player_notify(name, count .. " nodes transposed")
	end,
	function(name, param)
		local found, _, axis1, axis2 = param:find("^([xyz%?])%s+([xyz%?])$")
		if found == nil then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return nil
		end
		if axis1 == axis2 then
			worldedit.player_notify(name, "invalid usage: axes must be different")
			return nil
		end
		return check_region(name, param)
	end),
})

minetest.register_chatcommand("/flip", {
	params = "x/y/z/?",
	description = "Flip the current WorldEdit region along the x/y/z/? axis",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		if param == "?" then param = worldedit.player_axis(name) end
		local count = worldedit.flip(pos1, pos2, param)
		worldedit.player_notify(name, count .. " nodes flipped")
	end,
	function(name, param)
		if param ~= "x" and param ~= "y" and param ~= "z" and param ~= "?" then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return nil
		end
		return check_region(name, param)
	end),
})

minetest.register_chatcommand("/rotate", {
	params = "<axis> <angle>",
	description = "Rotate the current WorldEdit region around the axis <axis> by angle <angle> (90 degree increment)",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local found, _, axis, angle = param:find("^([xyz%?])%s+([+-]?%d+)$")
		if axis == "?" then axis = worldedit.player_axis(name) end
		local count, pos1, pos2 = worldedit.rotate(pos1, pos2, axis, angle)

		--reset markers to rotated positions
		worldedit.pos1[name] = pos1
		worldedit.pos2[name] = pos2
		worldedit.mark_pos1(name)
		worldedit.mark_pos2(name)

		worldedit.player_notify(name, count .. " nodes rotated")
	end,
	function(name, param)
		local found, _, axis, angle = param:find("^([xyz%?])%s+([+-]?%d+)$")
		if found == nil then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return nil
		end
		if angle % 90 ~= 0 then
			worldedit.player_notify(name, "invalid usage: angle must be multiple of 90")
			return nil
		end
		return check_region(name, param)
	end),
})

minetest.register_chatcommand("/orient", {
	params = "<angle>",
	description = "Rotate oriented nodes in the current WorldEdit region around the Y axis by angle <angle> (90 degree increment)",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local found, _, angle = param:find("^([+-]?%d+)$")
		local count = worldedit.orient(pos1, pos2, angle)
		worldedit.player_notify(name, count .. " nodes oriented")
	end,
	function(name, param)
		local found, _, angle = param:find("^([+-]?%d+)$")
		if found == nil then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return nil
		end
		if angle % 90 ~= 0 then
			worldedit.player_notify(name, "invalid usage: angle must be multiple of 90")
			return nil
		end
		return check_region(name, param)
	end),
})

minetest.register_chatcommand("/fixlight", {
	params = "",
	description = "Fix the lighting in the current WorldEdit region",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local count = worldedit.fixlight(pos1, pos2)
		worldedit.player_notify(name, count .. " nodes updated")
	end),
})

minetest.register_chatcommand("/hide", {
	params = "",
	description = "Hide all nodes in the current WorldEdit region non-destructively",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local count = worldedit.hide(pos1, pos2)
		worldedit.player_notify(name, count .. " nodes hidden")
	end),
})

minetest.register_chatcommand("/suppress", {
	params = "<node>",
	description = "Suppress all <node> in the current WorldEdit region non-destructively",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local node = get_node(name, param)
		local count = worldedit.suppress(pos1, pos2, node)
		worldedit.player_notify(name, count .. " nodes suppressed")
	end, check_set),
})

minetest.register_chatcommand("/highlight", {
	params = "<node>",
	description = "Highlight <node> in the current WorldEdit region by hiding everything else non-destructively",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local node = get_node(name, param)
		local count = worldedit.highlight(pos1, pos2, node)
		worldedit.player_notify(name, count .. " nodes highlighted")
	end, check_set),
})

minetest.register_chatcommand("/restore", {
	params = "",
	description = "Restores nodes hidden with WorldEdit in the current WorldEdit region",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local count = worldedit.restore(pos1, pos2)
		worldedit.player_notify(name, count .. " nodes restored")
	end),
})

minetest.register_chatcommand("/save", {
	params = "<file>",
	description = "Save the current WorldEdit region to \"(world folder)/schems/<file>.we\"",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		if param == "" then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return
		end
		if not string.find(param, "^[%w \t.,+-_=!@#$%%^&*()%[%]{};'\"]+$") then
			worldedit.player_notify(name, "invalid file name: " .. param)
			return
		end

		local result, count = worldedit.serialize(pos1, pos2)

		local path = minetest.get_worldpath() .. "/schems"
		local filename = path .. "/" .. param .. ".we"
		filename = filename:gsub("\"", "\\\""):gsub("\\", "\\\\") --escape any nasty characters
		os.execute("mkdir \"" .. path .. "\"") --create directory if it does not already exist
		local file, err = io.open(filename, "wb")
		if err ~= nil then
			worldedit.player_notify(name, "could not save file to \"" .. filename .. "\"")
			return
		end
		file:write(result)
		file:flush()
		file:close()

		worldedit.player_notify(name, count .. " nodes saved")
	end),
})

minetest.register_chatcommand("/allocate", {
	params = "<file>",
	description = "Set the region defined by nodes from \"(world folder)/schems/<file>.we\" as the current WorldEdit region",
	privs = {worldedit=true},
	func = function(name, param)
		local pos = get_position(name)
		local missingMods = ""
		if pos == nil then return end

		if param == "" then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return
		end
		if not string.find(param, "^[%w \t.,+-_=!@#$%%^&*()%[%]{};'\"]+$") then
			worldedit.player_notify(name, "invalid file name: " .. param)
			return
		end

		local filename = minetest.get_worldpath() .. "/schems/" .. param .. ".we"
		local file, err = io.open(filename, "rb")
		if err ~= nil then
			worldedit.player_notify(name, "could not open file \"" .. filename .. "\"")
			return
		end
		local value = file:read("*a")
		file:close()

		if worldedit.valueversion(value) == 0 then --unknown version
			worldedit.player_notify(name, "invalid file: file is invalid or created with newer version of WorldEdit")
			return
		end
		local nodepos1, nodepos2, count, missingMods = worldedit.allocate(pos, value)

		worldedit.pos1[name] = nodepos1
		worldedit.mark_pos1(name)
		worldedit.pos2[name] = nodepos2
		worldedit.mark_pos2(name)

		worldedit.player_notify(name, count .. " nodes allocated")
		if missingMods ~= "" then
			worldedit.player_notify(name, "Warning: schem file contains references to the following missing mods: ".. missingMods)
		end
	end,
})

minetest.register_chatcommand("/load", {
	params = "<file>",
	description = "Load nodes from \"(world folder)/schems/<file>[.we[m]]\" with position 1 of the current WorldEdit region as the origin",
	privs = {worldedit=true},
	func = function(name, param)
		local pos = get_position(name)
		if pos == nil then return end

		if param == "" then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return
		end
		if not string.find(param, "^[%w \t.,+-_=!@#$%%^&*()%[%]{};'\"]+$") then
			worldedit.player_notify(name, "invalid file name: " .. param)
			return
		end

		--find the file in the world path
		local testpaths = {
			minetest.get_worldpath() .. "/schems/" .. param,
			minetest.get_worldpath() .. "/schems/" .. param .. ".we",
			minetest.get_worldpath() .. "/schems/" .. param .. ".wem",
		}
		local file, err
		for index, path in ipairs(testpaths) do
			file, err = io.open(path, "rb")
			if not err then
				break
			end
		end
		if err then
			worldedit.player_notify(name, "could not open file \"" .. param .. "\"")
			return
		end
		local value = file:read("*a")
		file:close()

		if worldedit.valueversion(value) == 0 then --unknown version
			worldedit.player_notify(name, "invalid file: file is invalid or created with newer version of WorldEdit")
			return
		end

		local count = worldedit.deserialize(pos, value)

		worldedit.player_notify(name, count .. " nodes loaded")
	end,
})

-- Chat command to move pos1 and pos2 to correct origin (ie pos1 located with minimum x,y,z, pos2 with maximum x,y,z)
--  this is ideally used before /save to decrease confusion with placement for /load and /loadalign
-- This command has a helper function of worldedit.correctOrigin (located below) 
-- Shortcut of /co and /oc (to ease confusion) is set in worldedit_shortcommands/init.lua
minetest.register_chatcommand("/correctorigin", {
	params = "",
	description = "Moves pos1 and pos2 so region is marked with pos1 at the origin (ie minimum x,y,z)",
	privs = {worldedit=true},
	func = function(name)
		worldedit.correctOrigin(name)
	end,
})

--Corrects pos1 and pos2 so pos1 is located at the region origin - (ie pos1 located with minimum x,y,z, pos2 with maximum z,y,z)
-- not sure where best located, so left with the chat command.
worldedit.correctOrigin = function(name)
	local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]

	if pos1 == nil or pos2 == nil then
		worldedit.player_notify(name, "no region selected")
		return nil
	end

	pos1, pos2 = worldedit.sort_pos(pos1, pos2)

	worldedit.pos1[name] = pos1
	worldedit.mark_pos1(name)
	worldedit.pos2[name] = pos2
	worldedit.mark_pos2(name)
end

-- Chat command to enable a global variable which enables an offset to the player (or pos1) location for /loadalign
-- This can be useful it a particular location is not easily accessible (eg if you want a file y-origin to be below ground level, or x- or z- inside a cliff)
-- the offset is cleared by using the command without params (=arguments)
-- Shortcut of /lao is set in worldedit_shortcommands/init.lua
minetest.register_chatcommand("/loadalignoffset", {
	params = "x y z",
	description = "Set an offset for the worldedit command /loadaligned (x y z)",
	privs = {worldedit=true},
	func = function(name, param)
		local found, _, x, y, z = param:find("^([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)$")
		if x == nil or y == nil or z == nil then
			worldedit.player_notify(name, "LoadAlign Offset set to 0 for all axes (to set provide: 'x y z')")
			laPosOffset = {x=tonumber(0), y=tonumber(0), z=tonumber(0)}
		else
			laPosOffset = {x=tonumber(x), y=tonumber(y), z=tonumber(z)}
		end
	end,
})


-- Chat command to allow loading of a schem file which is aligned to player forward direction. The loaded schem will be in a region to the front, right and above the players location.
-- If the location is not easily accessible (eg if you want a file y-origin to be below ground level, or x- or z- inside a cliff), you can set an offset with /loadalignoffset
-- The player is moved backwards one space to moved them out of the load zone (or more if there is and offset). This may mean the player ends up inside a node (if it suddenly gets dark). You may be able to step out. If not you'll have to teleport to an unblocked location.
-- The /save command saves the file with the origin at the xmin,ymin,zmin, irrespective of where pos1 and pos2 are. To reduce confusion it is suggested that you use the /correctorigin command before saving
--   to move the markers to reflect this, but if you are copying a section one node wide, there are two possible orientations. 
--   You need to be facing in the positive z direction to correctly orient yourself to the orientation when it is reloaded. 
--   If you are using a schem regularly, and markers are not in your prefered orientation, it is best to do an initial /loadalign to get the correct orientation, then resave it
-- The loaded region is marked with pos1/pos2 with pos1 where the origin would have been when the schem was saved.
-- The function has only been tested with the current (version 4) schem files, so consider use with older schem files to be at your own risk. 
--   The most likely bugs with untested versions are: either the entire region is incorrectly rotated or individual nodes are incorrectly oriented (so faces point in the incorrect direction)
-- The functions is a modifications of the original register //load to support alignment relative to player, so code from the screwdriver mod was used as a starter for node orientation.
--   The main functions are in the WorldEdit/worldedit/serialization.lua (worldedit.deserializeAligned which also uses worldedit.getNewRotation, and might need worldedit.screwdriver_handler 
--   depending on compatibility with old files)
-- Shortcut of /la is set in worldedit_shortcommands/init.lua
minetest.register_chatcommand("/loadalign", {
	params = "<file>",
	--  usePlayer (p) forces using player location rather than position markers prior to load. markImport (m) places pos1/pos2 around the new region"
	description = "Load nodes from \"(world folder)/schems/<file>[.we[m]]\" with position 1 (or player location) of the current WorldEdit region as the origin. xyz offset from the player/pos1 position (eg for foundations), can be set with /loadalignoffset.",
	privs = {worldedit=true},
	func = function(name, param)
		local posOffx, posOffy, posOffz
		local player = minetest.get_player_by_name(name)
		local plPos = player:getpos()
		local pos


		-- There's probably a snazzy way of using patterns to enable multiple optional parameters including a filename, but I don't know how...
		-- ideally I would like to be able to supply as params: filename, pos, usePlayer, markImport
		fileName = param
		-- if this function ever gets merged with load, it's probably easier to be able to determine if player should be used as the origin
		-- also anything but 'p' will use pos1 as the origin (if it's set), and just use the player for alignment 
		usePlayer = "p"
		markImport = "m"	-- mark the dimensions of the loaded section (anything but 'm' will not mark


		-- if set use the global posOffset (as this enables offset to be set once and reused)
		if posOffset == nil then
			posOffx, posOffy, posOffz = 0, 0, 0
		else
			posOffx, posOffy, posOffz = laPosOffset.x, laPosOffset.y, laPosOffset.z
		end

		if usePlayer ~= "p" then pos = get_position(name) end
		if pos == nil then
			usePlayer = "p"
			pos = plPos
		end
		pos = {x=math.floor(pos.x+posOffx+0.51),y=math.floor(pos.y+posOffy+0.51),z=math.floor(pos.z+posOffz+0.51)}


		if fileName == "" then
			worldedit.player_notify(name, "invalid usage: " .. param)
			return
		end
		if not string.find(fileName, "^[%w \t.,+-_=!@#$%%^&*()%[%]{};'\"]+$") then
			worldedit.player_notify(name, "invalid file name: " .. param)
			return
		end

		--find the file in the world path, check it exists
		local testpaths = {
			minetest.get_worldpath() .. "/schems/" .. fileName,
			minetest.get_worldpath() .. "/schems/" .. fileName .. ".we",
			minetest.get_worldpath() .. "/schems/" .. fileName .. ".wem",
		}
		local file, err
		for index, path in ipairs(testpaths) do
			file, err = io.open(path, "rb")
			if not err then
				break
			end
		end
		if err then
			worldedit.player_notify(name, "could not open file \"" .. param .. "\"")
			return
		end
		local value = file:read("*a")
		file:close()

		-- check the schem version is recognised
		if worldedit.valueversion(value) == 0 then --unknown version
			worldedit.player_notify(name, "invalid file: file is invalid or created with newer version of WorldEdit")
			return
		end

		-- identify the direction the player is facing, and move them player out of the load region
		local dir = player:get_look_dir()
		local axx, axy, axz = math.abs(dir.x), math.abs(dir.y), math.abs(dir.z)
		if axx > axz and dir.x >= 0 then 
			axis = "X"
			if usePlayer == "p" then player:setpos({x=(plPos.x-1+posOffx), y=plPos.y, z=plPos.z}) end
		elseif axx > axz and dir.x < 0 then 
			axis = "x"
			if usePlayer == "p" then player:setpos({x=(plPos.x+1-posOffx), y=plPos.y, z=plPos.z}) end
		elseif axx < axz and dir.z >= 0 then 
			axis = "Z"
			if usePlayer == "p" then player:setpos({x=plPos.x, y=plPos.y, z=(plPos.z-1+posOffz)}) end
		elseif axx < axz and dir.z < 0 then
			axis = "z"
			if usePlayer == "p" then player:setpos({x=plPos.x, y=plPos.y, z=(plPos.z+1-posOffz)}) end
		end

		local count, pos1, pos2 = worldedit.deserializeAligned(pos, value, axis)

		-- placer pos1 and pos2 markers around the loaded region
		if markImport == "m" then
			worldedit.pos1[name] = pos1
			worldedit.mark_pos1(name)
			worldedit.pos2[name] = pos2
			worldedit.mark_pos2(name)
		end

		worldedit.player_notify(name, (count .. " nodes loaded. PlayerFacing: ".. axis.. " Location: x=".. pos.x.. " y=".. pos.y.. " z=".. pos.z.. " Offset: x=".. posOffx.. " y=".. posOffy.. " z=".. posOffz )) --.. x ", y=".. y, "z=".. z)
	end,
})

minetest.register_chatcommand("/lua", {
	params = "<code>",
	description = "Executes <code> as a Lua chunk in the global namespace",
	privs = {worldedit=true, server=true},
	func = function(name, param)
		local admin = minetest.setting_get("name")
		if not admin or not name == admin then
			worldedit.player_notify(name, "this command can only be run by the server administrator")
			return
		end
		local err = worldedit.lua(param)
		if err then
			worldedit.player_notify(name, "code error: " .. err)
		else
			worldedit.player_notify(name, "code successfully executed", false)
		end
	end,
})

minetest.register_chatcommand("/luatransform", {
	params = "<code>",
	description = "Executes <code> as a Lua chunk in the global namespace with the variable pos available, for each node in the current WorldEdit region",
	privs = {worldedit=true, server=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local admin = minetest.setting_get("name")
		if not admin or not name == admin then
			worldedit.player_notify(name, "this command can only be run by the server administrator")
			return
		end

		local err = worldedit.luatransform(pos1, pos2, param)
		if err then
			worldedit.player_notify(name, "code error: " .. err, false)
		else
			worldedit.player_notify(name, "code successfully executed", false)
		end
	end),
})

minetest.register_chatcommand("/mtschemcreate", {
	params = "<file>",
	description = "Save the current WorldEdit region using the Minetest Schematic format to \"(world folder)/schems/<filename>.mts\"",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		if param == nil then
			worldedit.player_notify(name, "No filename specified")
			return
		end

		local path = minetest.get_worldpath() .. "/schems"
		local filename = path .. "/" .. param .. ".mts"
		filename = filename:gsub("\"", "\\\""):gsub("\\", "\\\\") --escape any nasty characters
		os.execute("mkdir \"" .. path .. "\"") --create directory if it does not already exist

		local ret = minetest.create_schematic(pos1, pos2, worldedit.prob_list[name], filename)
		if ret == nil then
			worldedit.player_notify(name, "failed to create Minetest schematic", false)
		else
			worldedit.player_notify(name, "saved Minetest schematic to " .. param, false)
		end
		worldedit.prob_list[name] = {}
	end),
})

minetest.register_chatcommand("/mtschemplace", {
	params = "<file>",
	description = "Load nodes from \"(world folder)/schems/<file>.mts\" with position 1 of the current WorldEdit region as the origin",
	privs = {worldedit=true},
	func = function(name, param)
		if param == nil then
			worldedit.player_notify(name, "no filename specified")
			return
		end

		local pos = get_position(name)
		if pos == nil then return end

		local path = minetest.get_worldpath() .. "/schems/" .. param .. ".mts"
		if minetest.place_schematic(pos, path) == nil then
			worldedit.player_notify(name, "failed to place Minetest schematic", false)
		else
			worldedit.player_notify(name, "placed Minetest schematic " .. param ..
				" at " .. minetest.pos_to_string(pos), false)
		end
	end,
})

minetest.register_chatcommand("/mtschemprob", {
	params = "start/finish/get",
	description = "Begins node probability entry for Minetest schematics, gets the nodes that have probabilities set, or ends node probability entry",
	privs = {worldedit=true},
	func = function(name, param)
		if param == "start" then --start probability setting
			worldedit.set_pos[name] = "prob"
			worldedit.prob_list[name] = {}
			worldedit.player_notify(name, "select Minetest schematic probability values by punching nodes")
		elseif param == "finish" then --finish probability setting
			worldedit.set_pos[name] = nil
			worldedit.player_notify(name, "finished Minetest schematic probability selection")
		elseif param == "get" then --get all nodes that had probabilities set on them
			local text = ""
			local problist = worldedit.prob_list[name]
			if problist == nil then
				return
			end
			for k,v in pairs(problist) do
				local prob = math.floor(((v["prob"] / 256) * 100) * 100 + 0.5) / 100
				text = text .. minetest.pos_to_string(v["pos"]) .. ": " .. prob .. "% | "
			end
			worldedit.player_notify(name, "currently set node probabilities:")
			worldedit.player_notify(name, text)
		else
			worldedit.player_notify(name, "unknown subcommand: " .. param)
		end
	end,
})

minetest.register_on_player_receive_fields(
	function(player, formname, fields)
		if (formname == "prob_val_enter") and (fields.text ~= "") then
			local name = player:get_player_name()
			local prob_entry = {pos=worldedit.prob_pos[name], prob=tonumber(fields.text)}
			local index = table.getn(worldedit.prob_list[name]) + 1
			worldedit.prob_list[name][index] = prob_entry
		end
	end
)

minetest.register_chatcommand("/clearobjects", {
	params = "",
	description = "Clears all objects within the WorldEdit region",
	privs = {worldedit=true},
	func = safe_region(function(name, param)
		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
		local count = worldedit.clearobjects(pos1, pos2)
		worldedit.player_notify(name, count .. " objects cleared")
	end),
})