From da66780a569712c23ae4f2996cfb4608a9f9d69d Mon Sep 17 00:00:00 2001
From: Vanessa Ezekowitz <vanessaezekowitz@gmail.com>
Date: Fri, 1 Apr 2016 20:02:19 -0400
Subject: copy all standard Dreambuilder mods in from the old subgame (exactly
 as last supplied there, updates to these mods will follow later)

---
 worldedit/worldedit_commands/depends.txt           |    1 +
 worldedit/worldedit_commands/init.lua              | 1160 ++++++++++++++++++++
 worldedit/worldedit_commands/mark.lua              |  162 +++
 worldedit/worldedit_commands/safe.lua              |   68 ++
 .../worldedit_commands/textures/worldedit_cube.png |  Bin 0 -> 147 bytes
 .../worldedit_commands/textures/worldedit_pos1.png |  Bin 0 -> 142 bytes
 .../worldedit_commands/textures/worldedit_pos2.png |  Bin 0 -> 157 bytes
 7 files changed, 1391 insertions(+)
 create mode 100644 worldedit/worldedit_commands/depends.txt
 create mode 100644 worldedit/worldedit_commands/init.lua
 create mode 100644 worldedit/worldedit_commands/mark.lua
 create mode 100644 worldedit/worldedit_commands/safe.lua
 create mode 100644 worldedit/worldedit_commands/textures/worldedit_cube.png
 create mode 100644 worldedit/worldedit_commands/textures/worldedit_pos1.png
 create mode 100644 worldedit/worldedit_commands/textures/worldedit_pos2.png

(limited to 'worldedit/worldedit_commands')

diff --git a/worldedit/worldedit_commands/depends.txt b/worldedit/worldedit_commands/depends.txt
new file mode 100644
index 0000000..df8caff
--- /dev/null
+++ b/worldedit/worldedit_commands/depends.txt
@@ -0,0 +1 @@
+worldedit
\ No newline at end of file
diff --git a/worldedit/worldedit_commands/init.lua b/worldedit/worldedit_commands/init.lua
new file mode 100644
index 0000000..83a127e
--- /dev/null
+++ b/worldedit/worldedit_commands/init.lua
@@ -0,0 +1,1160 @@
+minetest.register_privilege("worldedit", "Can use WorldEdit commands")
+
+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")
+local safe_region, check_region = dofile(minetest.get_modpath("worldedit_commands") .. "/safe.lua")
+
+local function get_position(name) --position 1 retrieval function for when not using `safe_region`
+	local pos1 = worldedit.pos1[name]
+	if pos1 == nil then
+		worldedit.player_notify(name, "no position 1 selected")
+	end
+	return pos1
+end
+
+local function get_node(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
+
+function worldedit.player_notify(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)
+	nodename = nodename:gsub("^%s*(.-)%s*$", "%1")
+	if nodename == "" then return nil end
+	local fullname = ItemStack({name=nodename}):get_name() --resolve aliases of node names to full names
+	if minetest.registered_nodes[fullname] or fullname == "air" then --directly found node name or alias of nodename
+		return fullname
+	end
+	for key, value in pairs(minetest.registered_nodes) do
+		if key:find(":" .. nodename, 1, true) then --found in mod
+			return key
+		end
+	end
+	nodename = nodename:lower() --lowercase both for case insensitive comparison
+	for key, value in pairs(minetest.registered_nodes) do
+		if value.description:lower() == nodename then --found in description
+			return key
+		end
+	end
+	return nil
+end
+
+-- Determines the axis in which a player is facing, returning an axis ("x", "y", or "z") and the sign (1 or -1)
+function worldedit.player_axis(name)
+	local dir = minetest.get_player_by_name(name):get_look_dir()
+	local x, y, z = math.abs(dir.x), math.abs(dir.y), math.abs(dir.z)
+	if x > y then
+		if x > z then
+			return "x", dir.x > 0 and 1 or -1
+		end
+	elseif y > z then
+		return "y", dir.y > 0 and 1 or -1
+	end
+	return "z", dir.z > 0 and 1 or -1
+end
+
+local function mkdir(path)
+	if minetest.mkdir then
+		minetest.mkdir(path)
+	else
+		os.execute('mkdir "' .. path .. '"')
+	end
+end
+
+local function check_filename(name)
+	return name:find("^[%w%s%^&'@{}%[%],%$=!%-#%(%)%%%.%+~_]+$") ~= nil
+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,
+})
+
+minetest.register_chatcommand("/deleteblocks", {
+	params = "",
+	description = "remove all MapBlocks (16x16x16) containing the selected area from the map",
+	privs = {worldedit=true},
+	func = safe_region(function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		local success = minetest.delete_area(pos1, pos2)
+		if success then
+			worldedit.player_notify(name, "Area deleted.")
+		else
+			worldedit.player_notify(name, "There was an error during deletion of the area.")
+		end
+	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 node = get_node(name, param)
+		if not node then
+			worldedit.player_notify(name, "Could not identify node \"" .. param .. "\"")
+			return
+		end
+
+		local count = worldedit.set(worldedit.pos1[name], worldedit.pos2[name], node)
+		worldedit.player_notify(name, count .. " nodes set")
+	end, check_region),
+})
+
+minetest.register_chatcommand("/mix", {
+	params = "<node1> ...",
+	description = "Fill the current WorldEdit region with a random mix of <node1>, ...",
+	privs = {worldedit=true},
+	func = safe_region(function(name, param)
+		local nodes = {}
+		for nodename in param:gmatch("[^%s]+") do
+			local node = get_node(name, nodename)
+			if not node then
+				worldedit.player_notify(name, "Could not identify node \"" .. name .. "\"")
+				return
+			end
+			nodes[#nodes + 1] = node
+		end
+
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		local count = worldedit.set(pos1, pos2, nodes)
+		worldedit.player_notify(name, count .. " nodes set")
+	end, check_region),
+})
+
+local check_replace = function(name, param)
+	local found, _, searchnode, replacenode = param:find("^([^%s]+)%s+(.+)$")
+	if found == nil then
+		worldedit.player_notify(name, "invalid usage: " .. param)
+		return nil
+	end
+	local newsearchnode = worldedit.normalize_nodename(searchnode)
+	if not newsearchnode then
+		worldedit.player_notify(name, "invalid search node name: " .. searchnode)
+		return nil
+	end
+	local newreplacenode = worldedit.normalize_nodename(replacenode)
+	if not newreplacenode then
+		worldedit.player_notify(name, "invalid replace node name: " .. replacenode)
+		return nil
+	end
+	return check_region(name, param)
+end
+
+minetest.register_chatcommand("/replace", {
+	params = "<search node> <replace node>",
+	description = "Replace all instances of <search node> with <replace node> in the current WorldEdit region",
+	privs = {worldedit=true},
+	func = safe_region(function(name, param)
+		local found, _, search_node, replace_node = param:find("^([^%s]+)%s+(.+)$")
+		local norm_search_node = worldedit.normalize_nodename(search_node)
+		local norm_replace_node = worldedit.normalize_nodename(replace_node)
+		local count = worldedit.replace(worldedit.pos1[name], worldedit.pos2[name],
+				norm_search_node, norm_replace_node)
+		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 found, _, search_node, replace_node = param:find("^([^%s]+)%s+(.+)$")
+		local norm_search_node = worldedit.normalize_nodename(search_node)
+		local norm_replace_node = worldedit.normalize_nodename(replace_node)
+		local count = worldedit.replace(worldedit.pos1[name], worldedit.pos2[name],
+				norm_search_node, norm_replace_node, true)
+		worldedit.player_notify(name, count .. " nodes replaced")
+	end, check_replace),
+})
+
+local check_sphere = function(name, param)
+	if worldedit.pos1[name] == nil then
+		worldedit.player_notify(name, "no position 1 selected")
+		return nil
+	end
+	local found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
+	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 found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
+		local node = get_node(name, nodename)
+		local count = worldedit.sphere(worldedit.pos1[name], tonumber(radius), node, true)
+		worldedit.player_notify(name, count .. " nodes added")
+	end, check_sphere),
+})
+
+minetest.register_chatcommand("/sphere", {
+	params = "<radius> <node>",
+	description = "Add sphere centered at WorldEdit position 1 with radius <radius>, composed of <node>",
+	privs = {worldedit=true},
+	func = safe_region(function(name, param)
+		local found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
+		local node = get_node(name, nodename)
+		local count = worldedit.sphere(worldedit.pos1[name], 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+(.+)$")
+	if found == nil then
+		worldedit.player_notify(name, "invalid usage: " .. param)
+		return nil
+	end
+	local node = get_node(name, nodename)
+	if not node then return nil end
+	return math.ceil((2 * math.pi * (tonumber(radius) ^ 3)) / 3) --volume of dome
+end
+
+minetest.register_chatcommand("/hollowdome", {
+	params = "<radius> <node>",
+	description = "Add hollow dome centered at WorldEdit position 1 with radius <radius>, composed of <node>",
+	privs = {worldedit=true},
+	func = safe_region(function(name, param)
+		local found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
+		local node = get_node(name, nodename)
+		local count = worldedit.dome(worldedit.pos1[name], tonumber(radius), node, true)
+		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 found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
+		local node = get_node(name, nodename)
+		local count = worldedit.dome(worldedit.pos1[name], tonumber(radius), node)
+		worldedit.player_notify(name, count .. " nodes added")
+	end, check_dome),
+})
+
+local check_cylinder = function(name, param)
+	if worldedit.pos1[name] == nil then
+		worldedit.player_notify(name, "no position 1 selected")
+		return nil
+	end
+	local found, _, axis, length, radius, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(%d+)%s+(.+)$")
+	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 found, _, axis, length, radius, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(%d+)%s+(.+)$")
+		length = tonumber(length)
+		if axis == "?" then
+			axis, sign = worldedit.player_axis(name)
+			length = length * sign
+		end
+		local node = get_node(name, nodename)
+		local count = worldedit.cylinder(worldedit.pos1[name], axis, length, tonumber(radius), node, true)
+		worldedit.player_notify(name, count .. " nodes added")
+	end, check_cylinder),
+})
+
+minetest.register_chatcommand("/cylinder", {
+	params = "x/y/z/? <length> <radius> <node>",
+	description = "Add cylinder at WorldEdit position 1 along the x/y/z/? axis with length <length> and radius <radius>, composed of <node>",
+	privs = {worldedit=true},
+	func = safe_region(function(name, param)
+		local found, _, axis, length, radius, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(%d+)%s+(.+)$")
+		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(worldedit.pos1[name], 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 found, _, axis, height, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(.+)$")
+		height = tonumber(height)
+		if axis == "?" then
+			axis, sign = worldedit.player_axis(name)
+			height = height * sign
+		end
+		local node = get_node(name, nodename)
+		local count = worldedit.pyramid(worldedit.pos1[name], axis, height, node)
+		worldedit.player_notify(name, count .. " nodes added")
+	end,
+	function(name, param)
+		if worldedit.pos1[name] == nil then
+			worldedit.player_notify(name, "no position 1 selected")
+			return nil
+		end
+		local found, _, axis, height, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(.+)$")
+		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 found, _, length, height, space, nodename = param:find("^(%d+)%s+(%d+)%s+(%d+)%s+(.+)$")
+		local node = get_node(name, nodename)
+		local count = worldedit.spiral(worldedit.pos1[name], tonumber(length), tonumber(height), tonumber(space), node)
+		worldedit.player_notify(name, count .. " nodes added")
+	end,
+	function(name, param)
+		if worldedit.pos1[name] == nil then
+			worldedit.player_notify(name, "no position 1 selected")
+			return nil
+		end
+		local found, _, length, height, space, nodename = param:find("^(%d+)%s+(%d+)%s+(%d+)%s+(.+)$")
+		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 found, _, axis, amount = param:find("^([xyz%?])%s+([+-]?%d+)$")
+		if found == nil then
+			worldedit.player_notify(name, "invalid usage: " .. param)
+			return
+		end
+		amount = tonumber(amount)
+		if axis == "?" then
+			axis, sign = worldedit.player_axis(name)
+			amount = amount * sign
+		end
+
+		local count = worldedit.copy(worldedit.pos1[name], worldedit.pos2[name], axis, amount)
+		worldedit.player_notify(name, count .. " nodes copied")
+	end,
+	function(name, param)
+		local volume = check_region(name, param)
+		return volume and volume * 2 or volume
+	end),
+})
+
+minetest.register_chatcommand("/move", {
+	params = "x/y/z/? <amount>",
+	description = "Move the current WorldEdit region along the x/y/z/? axis by <amount> nodes",
+	privs = {worldedit=true},
+	func = safe_region(function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		local found, _, axis, amount = param:find("^([xyz%?])%s+([+-]?%d+)$")
+		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 found, _, axis, repetitions = param:find("^([xyz%?])%s+([+-]?%d+)$")
+		repetitions = tonumber(repetitions)
+		if axis == "?" then
+			axis, sign = worldedit.player_axis(name)
+			repetitions = repetitions * sign
+		end
+		local count = worldedit.stack(worldedit.pos1[name], worldedit.pos2[name], axis, repetitions)
+		worldedit.player_notify(name, count .. " nodes stacked")
+	end,
+	function(name, param)
+		local found, _, axis, repetitions = param:find("^([xyz%?])%s+([+-]?%d+)$")
+		if found == nil then
+			worldedit.player_notify(name, "invalid usage: " .. param)
+			return
+		end
+		local count = check_region(name, param)
+		if count then return (tonumber(repetitions) + 1) * count end
+		return nil
+	end),
+})
+
+minetest.register_chatcommand("/stack2", {
+	params = "<count> <x> <y> <z>",
+	description = "Stack the current WorldEdit region <count> times by offset <x>, <y>, <z>",
+	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, "Select a position first!")
+			return
+		end
+		local repetitions, incs = param:match("(%d+)%s*(.+)")
+		if repetitions == nil then
+			worldedit.player_notify(name, "invalid count: " .. param)
+			return
+		end
+		repetitions = tonumber(repetitions)
+
+		local x, y, z = incs:match("([+-]?%d+) ([+-]?%d+) ([+-]?%d+)")
+		if x == nil then
+			worldedit.player_notify(name, "invalid increments: " .. param)
+			return
+		end
+		x, y, z = tonumber(x), tonumber(y), tonumber(z)
+
+		local count = worldedit.volume(pos1, pos2) * repetitions
+
+		return safe_region(function()
+			worldedit.stack2(pos1, pos2, {x=x, y=y, z=z}, repetitions,
+				function() worldedit.player_notify(name, count .. " nodes stacked") end)
+		end, function()
+			return count
+		end)(name,param) -- more hax --wip: clean this up a little bit
+	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)
+		if param == "?" then param = worldedit.player_axis(name) end
+		local count = worldedit.flip(worldedit.pos1[name], worldedit.pos2[name], 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 found, _, angle = param:find("^([+-]?%d+)$")
+		local count = worldedit.orient(worldedit.pos1[name], worldedit.pos2[name], angle)
+		worldedit.player_notify(name, count .. " nodes oriented")
+	end,
+	function(name, param)
+		local found, _, angle = param:find("^([+-]?%d+)$")
+		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 count = worldedit.fixlight(worldedit.pos1[name], worldedit.pos2[name])
+		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 count = worldedit.hide(worldedit.pos1[name], worldedit.pos2[name])
+		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 node = get_node(name, param)
+		local count = worldedit.suppress(worldedit.pos1[name], worldedit.pos2[name], node)
+		worldedit.player_notify(name, count .. " nodes suppressed")
+	end, check_region),
+})
+
+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 node = get_node(name, param)
+		local count = worldedit.highlight(worldedit.pos1[name], worldedit.pos2[name], node)
+		worldedit.player_notify(name, count .. " nodes highlighted")
+	end, check_region),
+})
+
+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 count = worldedit.restore(worldedit.pos1[name], worldedit.pos2[name])
+		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)
+		if param == "" then
+			worldedit.player_notify(name, "invalid usage: " .. param)
+			return
+		end
+		if not check_filename(param) then
+			worldedit.player_notify(name, "Disallowed file name: " .. param)
+			return
+		end
+		local result, count = worldedit.serialize(worldedit.pos1[name],
+				worldedit.pos2[name])
+
+		local path = minetest.get_worldpath() .. "/schems"
+		-- Create directory if it does not already exist
+		mkdir(path)
+
+		local filename = path .. "/" .. param .. ".we"
+		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)
+		if pos == nil then return end
+
+		if param == "" then
+			worldedit.player_notify(name, "invalid usage: " .. param)
+			return
+		end
+		if not check_filename(param) then
+			worldedit.player_notify(name, "Disallowed 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()
+
+		local version = worldedit.read_header(value)
+		if version == 0 then
+			worldedit.player_notify(name, "File is invalid!")
+			return
+		elseif version > worldedit.LATEST_SERIALIZATION_VERSION then
+			worldedit.player_notify(name, "File was created with newer version of WorldEdit!")
+		end
+		local nodepos1, nodepos2, count = 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")
+	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()
+
+		local version = worldedit.read_header(value)
+		if version == 0 then
+			worldedit.player_notify(name, "File is invalid!")
+			return
+		elseif version > worldedit.LATEST_SERIALIZATION_VERSION then
+			worldedit.player_notify(name, "File was created with newer version of WorldEdit!")
+			return
+		end
+
+		local count = worldedit.deserialize(pos, value)
+
+		worldedit.player_notify(name, count .. " nodes loaded")
+	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 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(worldedit.pos1[name], worldedit.pos2[name], 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)
+		if param == nil then
+			worldedit.player_notify(name, "No filename specified")
+			return
+		end
+		if not check_filename(param) then
+			worldedit.player_notify(name, "Disallowed file name: " .. param)
+			return
+		end
+
+		local path = minetest.get_worldpath() .. "/schems"
+		-- Create directory if it does not already exist
+		mkdir(path)
+
+		local filename = path .. "/" .. param .. ".mts"
+		local ret = minetest.create_schematic(worldedit.pos1[name],
+				worldedit.pos2[name], 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 == "" then
+			worldedit.player_notify(name, "no filename specified")
+			return
+		end
+		if not check_filename(param) then
+			worldedit.player_notify(name, "Disallowed file name: " .. param)
+			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 count = worldedit.clear_objects(worldedit.pos1[name], worldedit.pos2[name])
+		worldedit.player_notify(name, count .. " objects cleared")
+	end),
+})
diff --git a/worldedit/worldedit_commands/mark.lua b/worldedit/worldedit_commands/mark.lua
new file mode 100644
index 0000000..4062cae
--- /dev/null
+++ b/worldedit/worldedit_commands/mark.lua
@@ -0,0 +1,162 @@
+worldedit.marker1 = {}
+worldedit.marker2 = {}
+worldedit.marker_region = {}
+
+--marks worldedit region position 1
+worldedit.mark_pos1 = function(name)
+	local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+
+	if pos1 ~= nil then
+		--make area stay loaded
+		local manip = minetest.get_voxel_manip()
+		manip:read_from_map(pos1, pos1)
+	end
+	if worldedit.marker1[name] ~= nil then --marker already exists
+		worldedit.marker1[name]:remove() --remove marker
+		worldedit.marker1[name] = nil
+	end
+	if pos1 ~= nil then
+		--add marker
+		worldedit.marker1[name] = minetest.add_entity(pos1, "worldedit:pos1")
+		if worldedit.marker1[name] ~= nil then
+			worldedit.marker1[name]:get_luaentity().player_name = name
+		end
+	end
+	worldedit.mark_region(name)
+end
+
+--marks worldedit region position 2
+worldedit.mark_pos2 = function(name)
+	local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+
+	if pos2 ~= nil then
+		--make area stay loaded
+		local manip = minetest.get_voxel_manip()
+		manip:read_from_map(pos2, pos2)
+	end
+	if worldedit.marker2[name] ~= nil then --marker already exists
+		worldedit.marker2[name]:remove() --remove marker
+		worldedit.marker2[name] = nil
+	end
+	if pos2 ~= nil then
+		--add marker
+		worldedit.marker2[name] = minetest.add_entity(pos2, "worldedit:pos2")
+		if worldedit.marker2[name] ~= nil then
+			worldedit.marker2[name]:get_luaentity().player_name = name
+		end
+	end
+	worldedit.mark_region(name)
+end
+
+worldedit.mark_region = function(name)
+	local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+
+	if worldedit.marker_region[name] ~= nil then --marker already exists
+		--wip: make the area stay loaded somehow
+		for _, entity in ipairs(worldedit.marker_region[name]) do
+			entity:remove()
+		end
+		worldedit.marker_region[name] = nil
+	end
+	if pos1 ~= nil and pos2 ~= nil then
+		local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
+		local thickness = 0.2
+		local sizex, sizey, sizez = (1 + pos2.x - pos1.x) / 2, (1 + pos2.y - pos1.y) / 2, (1 + pos2.z - pos1.z) / 2
+
+		--make area stay loaded
+		local manip = minetest.get_voxel_manip()
+		manip:read_from_map(pos1, pos2)
+
+		local markers = {}
+
+		--XY plane markers
+		for _, z in ipairs({pos1.z - 0.5, pos2.z + 0.5}) do
+			local marker = minetest.add_entity({x=pos1.x + sizex - 0.5, y=pos1.y + sizey - 0.5, z=z}, "worldedit:region_cube")
+			marker:set_properties({
+				visual_size={x=sizex * 2, y=sizey * 2},
+				collisionbox = {-sizex, -sizey, -thickness, sizex, sizey, thickness},
+			})
+			marker:get_luaentity().player_name = name
+			table.insert(markers, marker)
+		end
+
+		--YZ plane markers
+		for _, x in ipairs({pos1.x - 0.5, pos2.x + 0.5}) do
+			local marker = minetest.add_entity({x=x, y=pos1.y + sizey - 0.5, z=pos1.z + sizez - 0.5}, "worldedit:region_cube")
+			marker:set_properties({
+				visual_size={x=sizez * 2, y=sizey * 2},
+				collisionbox = {-thickness, -sizey, -sizez, thickness, sizey, sizez},
+			})
+			marker:setyaw(math.pi / 2)
+			marker:get_luaentity().player_name = name
+			table.insert(markers, marker)
+		end
+
+		worldedit.marker_region[name] = markers
+	end
+end
+
+minetest.register_entity(":worldedit:pos1", {
+	initial_properties = {
+		visual = "cube",
+		visual_size = {x=1.1, y=1.1},
+		textures = {"worldedit_pos1.png", "worldedit_pos1.png",
+			"worldedit_pos1.png", "worldedit_pos1.png",
+			"worldedit_pos1.png", "worldedit_pos1.png"},
+		collisionbox = {-0.55, -0.55, -0.55, 0.55, 0.55, 0.55},
+		physical = false,
+	},
+	on_step = function(self, dtime)
+		if worldedit.marker1[self.player_name] == nil then
+			self.object:remove()
+		end
+	end,
+	on_punch = function(self, hitter)
+		self.object:remove()
+		worldedit.marker1[self.player_name] = nil
+	end,
+})
+
+minetest.register_entity(":worldedit:pos2", {
+	initial_properties = {
+		visual = "cube",
+		visual_size = {x=1.1, y=1.1},
+		textures = {"worldedit_pos2.png", "worldedit_pos2.png",
+			"worldedit_pos2.png", "worldedit_pos2.png",
+			"worldedit_pos2.png", "worldedit_pos2.png"},
+		collisionbox = {-0.55, -0.55, -0.55, 0.55, 0.55, 0.55},
+		physical = false,
+	},
+	on_step = function(self, dtime)
+		if worldedit.marker2[self.player_name] == nil then
+			self.object:remove()
+		end
+	end,
+	on_punch = function(self, hitter)
+		self.object:remove()
+		worldedit.marker2[self.player_name] = nil
+	end,
+})
+
+minetest.register_entity(":worldedit:region_cube", {
+	initial_properties = {
+		visual = "upright_sprite",
+		visual_size = {x=1.1, y=1.1},
+		textures = {"worldedit_cube.png"},
+		visual_size = {x=10, y=10},
+		physical = false,
+	},
+	on_step = function(self, dtime)
+		if worldedit.marker_region[self.player_name] == nil then
+			self.object:remove()
+			return
+		end
+	end,
+	on_punch = function(self, hitter)
+		for _, entity in ipairs(worldedit.marker_region[self.player_name]) do
+			entity:remove()
+		end
+		worldedit.marker_region[self.player_name] = nil
+	end,
+})
+
diff --git a/worldedit/worldedit_commands/safe.lua b/worldedit/worldedit_commands/safe.lua
new file mode 100644
index 0000000..e640853
--- /dev/null
+++ b/worldedit/worldedit_commands/safe.lua
@@ -0,0 +1,68 @@
+local safe_region_callback = {}
+local safe_region_param = {}
+
+local function check_region(name, param)
+	local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name] --obtain positions
+	if pos1 == nil or pos2 == nil then
+		worldedit.player_notify(name, "no region selected")
+		return nil
+	end
+	return worldedit.volume(pos1, pos2)
+end
+
+--`callback` is a callback to run when the user confirms
+--`nodes_needed` is a function accepting `param`, `pos1`, and `pos2` to calculate the number of nodes needed
+local function safe_region(callback, nodes_needed)
+	--default node volume calculation
+	nodes_needed = nodes_needed or check_region
+
+	return function(name, param)
+		--check if the operation applies to a safe number of nodes
+		local count = nodes_needed(name, param)
+		if count == nil then return end --invalid command
+		if count < 10000 then
+			return callback(name, param)
+		end
+
+		--save callback to call later
+		safe_region_callback[name], safe_region_param[name] = callback, param
+		worldedit.player_notify(name, "WARNING: this operation could affect up to " .. count .. " nodes; type //y to continue or //n to cancel")
+	end
+end
+
+minetest.register_chatcommand("/y", {
+	params = "",
+	description = "Confirm a pending operation",
+	func = function(name)
+		local callback, param = safe_region_callback[name], safe_region_param[name]
+		if not callback then
+			worldedit.player_notify(name, "no operation pending")
+			return
+		end
+
+		--obtain positions
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			worldedit.player_notify(name, "no region selected")
+			return
+		end
+
+		safe_region_callback[name], safe_region_param[name] = nil, nil --reset pending operation
+		callback(name, param, pos1, pos2)
+	end,
+})
+
+minetest.register_chatcommand("/n", {
+	params = "",
+	description = "Confirm a pending operation",
+	func = function(name)
+		if not safe_region_callback[name] then
+			worldedit.player_notify(name, "no operation pending")
+			return
+		end
+		safe_region_callback[name], safe_region_param[name] = nil, nil
+	end,
+})
+
+return safe_region, check_region
+
diff --git a/worldedit/worldedit_commands/textures/worldedit_cube.png b/worldedit/worldedit_commands/textures/worldedit_cube.png
new file mode 100644
index 0000000..fde36a8
Binary files /dev/null and b/worldedit/worldedit_commands/textures/worldedit_cube.png differ
diff --git a/worldedit/worldedit_commands/textures/worldedit_pos1.png b/worldedit/worldedit_commands/textures/worldedit_pos1.png
new file mode 100644
index 0000000..4c304aa
Binary files /dev/null and b/worldedit/worldedit_commands/textures/worldedit_pos1.png differ
diff --git a/worldedit/worldedit_commands/textures/worldedit_pos2.png b/worldedit/worldedit_commands/textures/worldedit_pos2.png
new file mode 100644
index 0000000..1502f16
Binary files /dev/null and b/worldedit/worldedit_commands/textures/worldedit_pos2.png differ
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