From 1c31bd7f0d78447ea35e195b59fc1b2577ebaf18 Mon Sep 17 00:00:00 2001
From: Anthony Zhang <azhang9@gmail.com>
Date: Sat, 13 Oct 2012 21:45:50 -0400
Subject: Separate components into separate mods, add visualization API with
 hide(), suppress(), find(), and restore() for nondestructive node
 visualization. Corresponding chat commands are //hide, //suppress, //find,
 and //restore. Commands and functions documented.

---
 worldedit_commands/init.lua | 726 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 726 insertions(+)
 create mode 100644 worldedit_commands/init.lua

(limited to 'worldedit_commands/init.lua')

diff --git a/worldedit_commands/init.lua b/worldedit_commands/init.lua
new file mode 100644
index 0000000..a1ba9ae
--- /dev/null
+++ b/worldedit_commands/init.lua
@@ -0,0 +1,726 @@
+minetest.register_privilege("worldedit", "Can use WorldEdit commands")
+
+worldedit.set_pos = {}
+
+worldedit.pos1 = {}
+worldedit.pos2 = {}
+
+dofile(minetest.get_modpath("worldedit_commands") .. "/mark.lua")
+
+--determines whether `nodename` is a valid node name, returning a boolean
+worldedit.node_is_valid = function(nodename)
+	return minetest.registered_nodes[nodename] ~= nil
+	or minetest.registered_nodes["default:" .. nodename] ~= 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.env: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("/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)
+		minetest.chat_send_player(name, "WorldEdit 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)
+		minetest.chat_send_player(name, "WorldEdit region marked")
+	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.env:get_player_by_name(name):getpos()
+		pos.x, pos.y, pos.z = math.floor(pos.x), math.floor(pos.y), math.floor(pos.z)
+		worldedit.pos1[name] = pos
+		worldedit.mark_pos1(name)
+		minetest.chat_send_player(name, "WorldEdit 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.env:get_player_by_name(name):getpos()
+		pos.x, pos.y, pos.z = math.floor(pos.x), math.floor(pos.y), math.floor(pos.z)
+		worldedit.pos2[name] = pos
+		worldedit.mark_pos2(name)
+		minetest.chat_send_player(name, "WorldEdit position 2 set to " .. minetest.pos_to_string(pos))
+	end,
+})
+
+minetest.register_chatcommand("/p", {
+	params = "set/get",
+	description = "Set WorldEdit region by punching two 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] = 1
+			minetest.chat_send_player(name, "Select positions by punching two nodes")
+		elseif param == "get" then --display current WorldEdit positions
+			if worldedit.pos1[name] ~= nil then
+				minetest.chat_send_player(name, "WorldEdit position 1: " .. minetest.pos_to_string(worldedit.pos1[name]))
+			else
+				minetest.chat_send_player(name, "WorldEdit position 1 not set")
+			end
+			if worldedit.pos2[name] ~= nil then
+				minetest.chat_send_player(name, "WorldEdit position 2: " .. minetest.pos_to_string(worldedit.pos2[name]))
+			else
+				minetest.chat_send_player(name, "WorldEdit position 2 not set")
+			end
+		else
+			minetest.chat_send_player(name, "Unknown subcommand: " .. param)
+		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] == 1 then --setting position 1
+			worldedit.set_pos[name] = 2 --set position 2 on the next invocation
+			worldedit.pos1[name] = pos
+			worldedit.mark_pos1(name)
+			minetest.chat_send_player(name, "WorldEdit region position 1 set to " .. minetest.pos_to_string(pos))
+		else --setting position 2
+			worldedit.set_pos[name] = nil --finished setting positions
+			worldedit.pos2[name] = pos
+			worldedit.mark_pos2(name)
+			minetest.chat_send_player(name, "WorldEdit region position 2 set to " .. minetest.pos_to_string(pos))
+		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
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local volume = worldedit.volume(pos1, pos2)
+		minetest.chat_send_player(name, "Current WorldEdit region has a volume of " .. volume .. " nodes (" .. pos2.x - pos1.x .. "*" .. pos2.y - pos1.y .. "*" .. pos2.z - pos1.z .. ")")
+	end,
+})
+
+minetest.register_chatcommand("/set", {
+	params = "<node>",
+	description = "Set the current WorldEdit region to <node>",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		if param == "" or not worldedit.node_is_valid(param) then
+			minetest.chat_send_player(name, "Invalid node name: " .. param)
+			return
+		end
+
+		local count = worldedit.set(pos1, pos2, param)
+		minetest.chat_send_player(name, count .. " nodes set")
+	end,
+})
+
+minetest.register_chatcommand("/replace", {
+	params = "<search node> <replace node>",
+	description = "Replace all instances of <search node> with <place node> in 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
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, searchnode, replacenode = param:find("^([^%s]+)%s+([^%s]+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if not worldedit.node_is_valid(searchnode) then
+			minetest.chat_send_player(name, "Invalid search node name: " .. searchnode)
+			return
+		end
+		if not worldedit.node_is_valid(replacenode) then
+			minetest.chat_send_player(name, "Invalid replace node name: " .. replacenode)
+			return
+		end
+
+		local count = worldedit.replace(pos1, pos2, searchnode, replacenode)
+		minetest.chat_send_player(name, count .. " nodes replaced")
+	end,
+})
+
+minetest.register_chatcommand("/hollowsphere", {
+	params = "<radius> <node>",
+	description = "Add hollow sphere at WorldEdit position 1 with radius <radius>, composed of <node>",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos = worldedit.pos1[name]
+		if pos == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, radius, nodename = param:find("^(%d+)%s+([^%s]+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if not worldedit.node_is_valid(nodename) then
+			minetest.chat_send_player(name, "Invalid node name: " .. param)
+			return
+		end
+
+		local count = worldedit.hollow_sphere(pos, tonumber(radius), nodename)
+		minetest.chat_send_player(name, count .. " nodes added")
+	end,
+})
+
+minetest.register_chatcommand("/sphere", {
+	params = "<radius> <node>",
+	description = "Add sphere at WorldEdit position 1 with radius <radius>, composed of <node>",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos = worldedit.pos1[name]
+		if pos == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, radius, nodename = param:find("^(%d+)%s+([^%s]+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if not worldedit.node_is_valid(nodename) then
+			minetest.chat_send_player(name, "Invalid node name: " .. param)
+			return
+		end
+
+		local count = worldedit.sphere(pos, tonumber(radius), nodename)
+		minetest.chat_send_player(name, count .. " nodes added")
+	end,
+})
+
+minetest.register_chatcommand("/hollowcylinder", {
+	params = "x/y/z/? <length> <radius> <node>",
+	description = "Add hollow cylinder at WorldEdit position 1 along the x/y/z/? axis with length <length> and radius <radius>, composed of <node>",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos = worldedit.pos1[name]
+		if pos == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, axis, length, radius, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(%d+)%s+([^%s]+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if axis == "?" then
+			axis, sign = worldedit.player_axis(name)
+			length = length * sign
+		end
+		if not worldedit.node_is_valid(nodename) then
+			minetest.chat_send_player(name, "Invalid node name: " .. param)
+			return
+		end
+
+		local count = worldedit.hollow_cylinder(pos, axis, tonumber(length), tonumber(radius), nodename)
+		minetest.chat_send_player(name, count .. " nodes added")
+	end,
+})
+
+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 = function(name, param)
+		local pos = worldedit.pos1[name]
+		if pos == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, axis, length, radius, nodename = param:find("^([xyz%?])%s+([+-]?%d+)%s+(%d+)%s+([^%s]+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if axis == "?" then
+			axis, sign = worldedit.player_axis(name)
+			length = length * sign
+		end
+		if not worldedit.node_is_valid(nodename) then
+			minetest.chat_send_player(name, "Invalid node name: " .. param)
+			return
+		end
+
+		local count = worldedit.cylinder(pos, axis, tonumber(length), tonumber(radius), nodename)
+		minetest.chat_send_player(name, count .. " nodes added")
+	end,
+})
+
+minetest.register_chatcommand("/pyramid", {
+	params = "<height> <node>",
+	description = "Add pyramid at WorldEdit position 1 with height <height>, composed of <node>",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos = worldedit.pos1[name]
+		if pos == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, size, nodename = param:find("(%d+)%s+([^%s]+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if not worldedit.node_is_valid(nodename) then
+			minetest.chat_send_player(name, "Invalid node name: " .. param)
+			return
+		end
+
+		local count = worldedit.pyramid(pos, tonumber(size), nodename)
+		minetest.chat_send_player(name, count .. " nodes added")
+	end,
+})
+
+minetest.register_chatcommand("/spiral", {
+	params = "<width> <height> <space> <node>",
+	description = "Add spiral at WorldEdit position 1 with width <width>, height <height>, space between walls <space>, composed of <node>",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos = worldedit.pos1[name]
+		if pos == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, width, height, space, nodename = param:find("(%d+)%s+(%d+)%s+(%d+)%s+([^%s]+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if not worldedit.node_is_valid(nodename) then
+			minetest.chat_send_player(name, "Invalid node name: " .. param)
+			return
+		end
+
+		local count = worldedit.spiral(pos, tonumber(width), tonumber(height), tonumber(space), nodename)
+		minetest.chat_send_player(name, count .. " nodes changed")
+	end,
+})
+
+minetest.register_chatcommand("/copy", {
+	params = "x/y/z/? <amount>",
+	description = "Copy the current WorldEdit region along the x/y/z/? axis by <amount> nodes",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, axis, amount = param:find("^([xyz%?])%s+([+-]?%d+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if axis == "?" then
+			axis, sign = worldedit.player_axis(name)
+			amount = amount * sign
+		end
+
+		local count = worldedit.copy(pos1, pos2, axis, tonumber(amount))
+		minetest.chat_send_player(name, count .. " nodes copied")
+	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 = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, axis, amount = param:find("^([xyz%?])%s+([+-]?%d+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if axis == "?" then
+			axis, sign = worldedit.player_axis(name)
+			amount = amount * sign
+		end
+
+		local count = worldedit.move(pos1, pos2, axis, tonumber(amount))
+
+		pos1[axis] = pos1[axis] + amount
+		pos2[axis] = pos2[axis] + amount
+		worldedit.mark_pos1(name)
+		worldedit.mark_pos2(name)
+
+		minetest.chat_send_player(name, count .. " nodes moved")
+	end,
+})
+
+minetest.register_chatcommand("/stack", {
+	params = "x/y/z/? <count>",
+	description = "Stack the current WorldEdit region along the x/y/z/? axis <count> times",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, axis, count = param:find("^([xyz%?])%s+([+-]?%d+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if axis == "?" then
+			axis, sign = worldedit.player_axis(name)
+			count = count * sign
+		end
+
+		local count = worldedit.stack(pos1, pos2, axis, tonumber(count))
+		minetest.chat_send_player(name, count .. " nodes stacked")
+	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 = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, axis1, axis2 = param:find("^([xyz%?])%s+([xyz%?])$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if axis1 == "?" then
+			axis1 = worldedit.player_axis(name)
+		end
+		if axis2 == "?" then
+			axis2 = worldedit.player_axis(name)
+		end
+		if axis1 == axis2 then
+			minetest.chat_send_player(name, "Invalid usage: axes are the same")
+			return
+		end
+
+		local count = worldedit.transpose(pos1, pos2, axis1, axis2)
+		minetest.chat_send_player(name, count .. " nodes transposed")
+	end,
+})
+
+minetest.register_chatcommand("/flip", {
+	params = "x/y/z/?",
+	description = "Flip the current WorldEdit region along the x/y/z/? axis",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		if param == "?" then
+			param = worldedit.player_axis(name)
+		end
+		if param ~= "x" and param ~= "y" and param ~= "z" then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+
+		local count = worldedit.flip(pos1, pos2, param)
+		minetest.chat_send_player(name, count .. " nodes flipped")
+	end,
+})
+
+minetest.register_chatcommand("/rotate", {
+	params = "<axis> <angle>",
+	description = "Rotate the current WorldEdit region around the axis <axis> by angle <angle> (90 degree increment)",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local found, _, axis, angle = param:find("^([xyz%?])%s+([+-]?%d+)$")
+		if found == nil then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		if axis == "?" then
+			axis = worldedit.player_axis(name)
+		end
+		if angle % 90 ~= 0 then
+			minetest.chat_send_player(name, "Invalid usage: angle must be multiple of 90")
+			return
+		end
+
+		local count = worldedit.rotate(pos1, pos2, axis, angle)
+		minetest.chat_send_player(name, count .. " nodes rotated")
+	end,
+})
+
+minetest.register_chatcommand("/dig", {
+	params = "",
+	description = "Dig 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
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local count = worldedit.dig(pos1, pos2)
+		minetest.chat_send_player(name, count .. " nodes dug")
+	end,
+})
+
+minetest.register_chatcommand("/hide", {
+	params = "<node>",
+	description = "Hide all nodes in the current WorldEdit region non-destructively",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local count = worldedit.hide(pos1, pos2)
+		minetest.chat_send_player(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 = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		if param == "" or not worldedit.node_is_valid(param) then
+			minetest.chat_send_player(name, "Invalid node name: " .. param)
+			return
+		end
+
+		local count = worldedit.suppress(pos1, pos2, param)
+		minetest.chat_send_player(name, count .. " nodes suppressed")
+	end,
+})
+
+minetest.register_chatcommand("/find", {
+	params = "<node>",
+	description = "Find <node> in the current WorldEdit region by hiding everything else non-destructively",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		if param == "" or not worldedit.node_is_valid(param) then
+			minetest.chat_send_player(name, "Invalid node name: " .. param)
+			return
+		end
+
+		local count = worldedit.find(pos1, pos2, param)
+		minetest.chat_send_player(name, count .. " nodes found")
+	end,
+})
+
+minetest.register_chatcommand("/restore", {
+	params = "",
+	description = "Restores nodes hidden with WorldEdit in 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
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		local count = worldedit.restore(pos1, pos2)
+		minetest.chat_send_player(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 = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		if param == "" then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+
+		local result, count = worldedit.serialize(pos1, pos2)
+
+		local path = minetest.get_worldpath() .. "/schems"
+		local filename = path .. "/" .. param .. ".we"
+		os.execute("mkdir \"" .. path .. "\"") --create directory if it does not already exist
+		local file, err = io.open(filename, "wb")
+		if err ~= nil then
+			minetest.chat_send_player(name, "Could not save file to \"" .. filename .. "\"")
+			return
+		end
+		file:write(result)
+		file:flush()
+		file:close()
+
+		minetest.chat_send_player(name, count .. " nodes saved")
+	end,
+})
+
+minetest.register_chatcommand("/load", {
+	params = "<file>",
+	description = "Load nodes from \"(world folder)/schems/<file>.we\" with position 1 of the current WorldEdit region as the origin",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos1 = worldedit.pos1[name]
+		if pos1 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+
+		if param == "" then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+
+		local filename = minetest.get_worldpath() .. "/schems/" .. param .. ".we"
+		local file, err = io.open(filename, "rb")
+		if err ~= nil then
+			minetest.chat_send_player(name, "Could not open file \"" .. filename .. "\"")
+			return
+		end
+		local value = file:read("*a")
+		file:close()
+
+		local count
+		if value:find("{") then --old WorldEdit format
+			count = worldedit.deserialize_old(pos1, value)
+		else --new WorldEdit format
+			count = worldedit.deserialize(pos1, value)
+		end
+
+		minetest.chat_send_player(name, count .. " nodes loaded")
+	end,
+})
+
+minetest.register_chatcommand("/metasave", {
+	params = "<file>",
+	description = "Save the current WorldEdit region to \"(world folder)/schems/<file>.wem\"",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+		if param == "" then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		local count, err = worldedit.metasave(pos1, pos2, param)
+		if err then
+			minetest.chat_send_player(name, "error loading file: " .. err)
+		else
+			minetest.chat_send_player(name, count .. " nodes saved")
+		end
+	end,
+})
+
+minetest.register_chatcommand("/metaload", {
+	params = "<file>",
+	description = "Load nodes from \"(world folder)/schems/<file>.wem\" with position 1 of the current WorldEdit region as the origin",
+	privs = {worldedit=true},
+	func = function(name, param)
+		local pos1 = worldedit.pos1[name]
+		if pos1 == nil then
+			minetest.chat_send_player(name, "No WorldEdit region selected")
+			return
+		end
+		if param == "" then
+			minetest.chat_send_player(name, "Invalid usage: " .. param)
+			return
+		end
+		local count, err = worldedit.metaload(pos1, param)
+		if err then
+			minetest.chat_send_player(name, "error loading file: " .. err)
+		else
+			minetest.chat_send_player(name, count .. " nodes loaded")
+		end
+	end,
+})
-- 
cgit v1.2.3