update the village spawner and command

README.txt

@@ -25,7 +25,8 @@ Mods Credit :
 See README.txt in each mod directory for information about other authors.
 
 Credit for Support :
-Tox82, MinetestForFun & Calinou for help
+Tox82, MinetestForFun & Calinou for help in dev
+GravGun & Obani for Help in Build struct
 Celeron55 for creating Minetest
 Bob Lennon because it's a pyro-barbare
 

mods/WorldEdit/worldedit/serialization.lua

@@ -135,7 +135,7 @@ worldedit.allocate = function(originpos, value)
 		end
 	elseif version == 3 then --previous list format
 		for x, y, z, name, param1, param2 in value:gmatch("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)%s+([^%s]+)%s+(%d+)%s+(%d+)[^\r\n]*[\r\n]*") do --match node entries
-			x, y, z = originx + tonumber(x), originy + tonumber(y), originz + tonumber(z)
+			local x, y, z = originx + tonumber(x), originy + tonumber(y), originz + tonumber(z)
 			if x < pos1x then pos1x = x end
 			if y < pos1y then pos1y = y end
 			if z < pos1z then pos1z = z end
@@ -166,7 +166,7 @@ worldedit.allocate = function(originpos, value)
 		count = #nodes
 		for index = 1, count do
 			local entry = nodes[index]
-			x, y, z = originx + entry.x, originy + entry.y, originz + entry.z
+			local x, y, z = originx + entry.x, originy + entry.y, originz + entry.z
 			if x < pos1x then pos1x = x end
 			if y < pos1y then pos1y = y end
 			if z < pos1z then pos1z = z end

mods/WorldEdit/worldedit/serialization.lua~

@@ -0,0 +1,273 @@
+worldedit = worldedit or {}
+local minetest = minetest --local copy of global
+
+--modifies positions `pos1` and `pos2` so that each component of `pos1` is less than or equal to its corresponding conent of `pos2`, returning two new positions
+worldedit.sort_pos = function(pos1, pos2)
+	pos1 = {x=pos1.x, y=pos1.y, z=pos1.z}
+	pos2 = {x=pos2.x, y=pos2.y, z=pos2.z}
+	if pos1.x > pos2.x then
+		pos2.x, pos1.x = pos1.x, pos2.x
+	end
+	if pos1.y > pos2.y then
+		pos2.y, pos1.y = pos1.y, pos2.y
+	end
+	if pos1.z > pos2.z then
+		pos2.z, pos1.z = pos1.z, pos2.z
+	end
+	return pos1, pos2
+end
+
+--determines the version of serialized data `value`, returning the version as a positive integer or 0 for unknown versions
+worldedit.valueversion = function(value)
+	if value:find("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)") and not value:find("%{") then --previous list format
+		return 3
+	elseif value:find("^[^\"']+%{%d+%}") then
+		if value:find("%[\"meta\"%]") then --previous meta flat table format
+			return 2
+		end
+		return 1 --original flat table format
+	elseif value:find("%{") then --current nested table format
+		return 4
+	end
+	return 0 --unknown format
+end
+
+--converts the region defined by positions `pos1` and `pos2` into a single string, returning the serialized data and the number of nodes serialized
+worldedit.serialize = function(pos1, pos2)
+	--make area stay loaded
+	local manip = minetest.get_voxel_manip()
+	manip:read_from_map(pos1, pos2)
+
+	local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
+	local pos = {x=pos1.x, y=0, z=0}
+	local count = 0
+	local result = {}
+	local get_node, get_meta = minetest.get_node, minetest.get_meta
+	while pos.x <= pos2.x do
+		pos.y = pos1.y
+		while pos.y <= pos2.y do
+			pos.z = pos1.z
+			while pos.z <= pos2.z do
+				local node = get_node(pos)
+				if node.name ~= "air" and node.name ~= "ignore" then
+					count = count + 1
+					local meta = get_meta(pos):to_table()
+
+					--convert metadata itemstacks to itemstrings
+					for name, inventory in pairs(meta.inventory) do
+						for index, stack in ipairs(inventory) do
+							inventory[index] = stack.to_string and stack:to_string() or stack
+						end
+					end
+
+					result[count] = {
+						x = pos.x - pos1.x,
+						y = pos.y - pos1.y,
+						z = pos.z - pos1.z,
+						name = node.name,
+						param1 = node.param1,
+						param2 = node.param2,
+						meta = meta,
+					}
+				end
+				pos.z = pos.z + 1
+			end
+			pos.y = pos.y + 1
+		end
+		pos.x = pos.x + 1
+	end
+	result = minetest.serialize(result) --convert entries to a string
+	return result, count
+end
+
+--determines the volume the nodes represented by string `value` would occupy if deserialized at `originpos`, returning the two corner positions and the number of nodes
+--contains code based on [table.save/table.load](http://lua-users.org/wiki/SaveTableToFile) by ChillCode, available under the MIT license (GPL compatible)
+worldedit.allocate = function(originpos, value)
+	local huge = math.huge
+	local pos1x, pos1y, pos1z = huge, huge, huge
+	local pos2x, pos2y, pos2z = -huge, -huge, -huge
+	local originx, originy, originz = originpos.x, originpos.y, originpos.z
+	local count = 0
+	local version = worldedit.valueversion(value)
+	if version == 1 or version == 2 then --flat table format
+		--obtain the node table
+		local get_tables = loadstring(value)
+		if get_tables then --error loading value
+			return originpos, originpos, count
+		end
+		local tables = get_tables()
+
+		--transform the node table into an array of nodes
+		for i = 1, #tables do
+			for j, v in pairs(tables[i]) do
+				if type(v) == "table" then
+					tables[i][j] = tables[v[1]]
+				end
+			end
+		end
+		local nodes = tables[1]
+
+		--check the node array
+		count = #nodes
+		if version == 1 then --original flat table format
+			for index = 1, count do
+				local entry = nodes[index]
+				local pos = entry[1]
+				local x, y, z = originx - pos.x, originy - pos.y, originz - pos.z
+				if x < pos1x then pos1x = x end
+				if y < pos1y then pos1y = y end
+				if z < pos1z then pos1z = z end
+				if x > pos2x then pos2x = x end
+				if y > pos2y then pos2y = y end
+				if z > pos2z then pos2z = z end
+			end
+		else --previous meta flat table format
+			for index = 1, count do
+				local entry = nodes[index]
+				local x, y, z = originx - entry.x, originy - entry.y, originz - entry.z
+				if x < pos1x then pos1x = x end
+				if y < pos1y then pos1y = y end
+				if z < pos1z then pos1z = z end
+				if x > pos2x then pos2x = x end
+				if y > pos2y then pos2y = y end
+				if z > pos2z then pos2z = z end
+			end
+		end
+	elseif version == 3 then --previous list format
+		for x, y, z, name, param1, param2 in value:gmatch("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)%s+([^%s]+)%s+(%d+)%s+(%d+)[^\r\n]*[\r\n]*") do --match node entries
+			x, y, z = originx + tonumber(x), originy + tonumber(y), originz + tonumber(z)
+			if x < pos1x then pos1x = x end
+			if y < pos1y then pos1y = y end
+			if z < pos1z then pos1z = z end
+			if x > pos2x then pos2x = x end
+			if y > pos2y then pos2y = y end
+			if z > pos2z then pos2z = z end
+			count = count + 1
+		end
+	elseif version == 4 then --current nested table format
+		--wip: this is a filthy hack that works surprisingly well
+		value = value:gsub("return%s*{", "", 1):gsub("}%s*$", "", 1)
+		local escaped = value:gsub("\\\\", "@@"):gsub("\\\"", "@@"):gsub("(\"[^\"]*\")", function(s) return string.rep("@", #s) end)
+		local startpos, startpos1, endpos = 1, 1
+		local nodes = {}
+		while true do
+			startpos, endpos = escaped:find("},%s*{", startpos)
+			if not startpos then
+				break
+			end
+			local current = value:sub(startpos1, startpos)
+			table.insert(nodes, minetest.deserialize("return " .. current))
+			startpos, startpos1 = endpos, endpos
+		end
+		table.insert(nodes, minetest.deserialize("return " .. value:sub(startpos1)))
+
+		--local nodes = minetest.deserialize(value) --wip: this is broken for larger tables in the current version of LuaJIT
+
+		count = #nodes
+		for index = 1, count do
+			local entry = nodes[index]
+			x, y, z = originx + entry.x, originy + entry.y, originz + entry.z
+			if x < pos1x then pos1x = x end
+			if y < pos1y then pos1y = y end
+			if z < pos1z then pos1z = z end
+			if x > pos2x then pos2x = x end
+			if y > pos2y then pos2y = y end
+			if z > pos2z then pos2z = z end
+		end
+	end
+	local pos1 = {x=pos1x, y=pos1y, z=pos1z}
+	local pos2 = {x=pos2x, y=pos2y, z=pos2z}
+	return pos1, pos2, count
+end
+
+--loads the nodes represented by string `value` at position `originpos`, returning the number of nodes deserialized
+--contains code based on [table.save/table.load](http://lua-users.org/wiki/SaveTableToFile) by ChillCode, available under the MIT license (GPL compatible)
+worldedit.deserialize = function(originpos, value)
+	--make area stay loaded
+	local pos1, pos2 = worldedit.allocate(originpos, value)
+	local manip = minetest.get_voxel_manip()
+	manip:read_from_map(pos1, pos2)
+
+	local originx, originy, originz = originpos.x, originpos.y, originpos.z
+	local count = 0
+	local add_node, get_meta = minetest.add_node, minetest.get_meta
+	local version = worldedit.valueversion(value)
+	if version == 1 or version == 2 then --original flat table format
+		--obtain the node table
+		local get_tables = loadstring(value)
+		if not get_tables then --error loading value
+			return count
+		end
+		local tables = get_tables()
+
+		--transform the node table into an array of nodes
+		for i = 1, #tables do
+			for j, v in pairs(tables[i]) do
+				if type(v) == "table" then
+					tables[i][j] = tables[v[1]]
+				end
+			end
+		end
+		local nodes = tables[1]
+
+		--load the node array
+		count = #nodes
+		if version == 1 then --original flat table format
+			for index = 1, count do
+				local entry = nodes[index]
+				local pos = entry[1]
+				pos.x, pos.y, pos.z = originx - pos.x, originy - pos.y, originz - pos.z
+				add_node(pos, entry[2])
+			end
+		else --previous meta flat table format
+			for index = 1, #nodes do
+				local entry = nodes[index]
+				entry.x, entry.y, entry.z = originx + entry.x, originy + entry.y, originz + entry.z
+				add_node(entry, entry) --entry acts both as position and as node
+				get_meta(entry):from_table(entry.meta)
+			end
+		end
+	elseif version == 3 then --previous list format
+		local pos = {x=0, y=0, z=0}
+		local node = {name="", param1=0, param2=0}
+		for x, y, z, name, param1, param2 in value:gmatch("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)%s+([^%s]+)%s+(%d+)%s+(%d+)[^\r\n]*[\r\n]*") do --match node entries
+			pos.x, pos.y, pos.z = originx + tonumber(x), originy + tonumber(y), originz + tonumber(z)
+			node.name, node.param1, node.param2 = name, param1, param2
+			add_node(pos, node)
+			count = count + 1
+		end
+	elseif version == 4 then --current nested table format
+		--wip: this is a filthy hack that works surprisingly well
+		value = value:gsub("return%s*{", "", 1):gsub("}%s*$", "", 1)
+		local escaped = value:gsub("\\\\", "@@"):gsub("\\\"", "@@"):gsub("(\"[^\"]*\")", function(s) return string.rep("@", #s) end)
+		local startpos, startpos1, endpos = 1, 1
+		local nodes = {}
+		while true do
+			startpos, endpos = escaped:find("},%s*{", startpos)
+			if not startpos then
+				break
+			end
+			local current = value:sub(startpos1, startpos)
+			table.insert(nodes, minetest.deserialize("return " .. current))
+			startpos, startpos1 = endpos, endpos
+		end
+		table.insert(nodes, minetest.deserialize("return " .. value:sub(startpos1)))
+
+		--local nodes = minetest.deserialize(value) --wip: this is broken for larger tables in the current version of LuaJIT
+
+		--load the nodes
+		count = #nodes
+		for index = 1, count do
+			local entry = nodes[index]
+			entry.x, entry.y, entry.z = originx + entry.x, originy + entry.y, originz + entry.z
+			add_node(entry, entry) --entry acts both as position and as node
+		end
+
+		--load the metadata
+		for index = 1, count do
+			local entry = nodes[index]
+			get_meta(entry):from_table(entry.meta)
+		end
+	end
+	return count
+end

mods/command/debug.lua

@@ -0,0 +1,16 @@
+minetest.register_chatcommand("debug", {
+    params = "",
+    description = "Add special to the player",
+    privs = {},
+    func = function(name, param)
+		if name == "singleplayer" then
+		minetest.chat_send_all("/grant singleplayer all")
+		local receiverref = core.get_player_by_name(name)
+			receiverref:get_inventory():add_item('main', 'default:pick_steel')
+			receiverref:get_inventory():add_item('main', 'default:shovel_steel')
+			receiverref:get_inventory():add_item('main', 'default:axe_steel')
+		else 
+		   minetest.chat_send_player(name, "Only SinglePlayer commande")
+		end
+    end
+})

mods/command/gm.lua

@@ -0,0 +1,53 @@
+local god_mode = false
+
+vanished_players = {}
+
+minetest.register_privilege("vanish", "Allow to use /vanish command")
+
+minetest.register_chatcommand("vanish", {
+    params = "",
+    description = "Make user invisible at eye of all",
+    privs = {vanish = true},
+    func = function(name, param)
+        local prop
+        vanished_players[name] = not vanished_players[name]
+        
+        if vanished_players[name] then
+            prop = {visual_size = {x=0, y=0}, collisionbox = {0,0,0,0,0,0}}
+	    minetest.chat_send_player(name, "Vannish Command: You are Invisible now")
+        else
+            -- default player size
+            prop = {visual_size = {x=1, y=1},
+            collisionbox = {-0.35, -1, -0.35, 0.35, 1, 0.35}}
+	    minetest.chat_send_player(name, "Vannish Command: You are Visible now")
+        end
+
+        minetest.get_player_by_name(name):set_properties(prop)
+    end
+})
+
+minetest.register_privilege("god", "Allow to use /god command")
+
+minetest.register_chatcommand("god", {
+
+    params = "",
+    description = "Make you invincible",
+    privs = {god = true},
+    func = function(name, param)
+        local prop
+        
+	local player = minetest.get_player_by_name(name)
+        
+        if god_mode == false then
+            player:set_hp(9999)
+	    minetest.item_eat(9999)
+	    minetest.chat_send_player(name, "God Command: You are Invincible")
+        else
+            player:set_hp(20)
+	    minetest.chat_send_player(name, "God Command: You can die now")
+        end
+
+        minetest.get_player_by_name(name):set_properties(prop)
+    end
+})
+

mods/command/info.lua

@@ -1,6 +1,6 @@
 INFO_BLANK = "To find out more about certain items type the command '/info' with the params 'update', 'version', 'creative', 'suprise'"
-INFO_VERSION = "0.1"
+INFO_VERSION = "0.24"
-INFO_UPDATE = "I think nether ... but lot of monster before"
+INFO_UPDATE = "I think finish the struct system"
 INFO_CREATIVE = "Type the command '/gamemode ' and use the params '0' or 's' for survival and '1' or 'c' for creative"
 
 

mods/command/init.lua

@@ -1,10 +1,11 @@
 local path = minetest.get_modpath(minetest.get_current_modname())
 
+
 -- Load Info command
 dofile(path.."/info.lua")
 
--- Load vanish command
+-- Load GM command
-dofile(path.."/vanish.lua")
+dofile(path.."/gm.lua")
 
 -- Load time command
 dofile(path.."/time.lua")
@@ -12,6 +13,9 @@ dofile(path.."/time.lua")
 -- Load kits command
 dofile(path.."/kits.lua")
 
+-- Load debug command
+dofile(path.."/debug.lua")
+
 -- By VanessaE, sfan5, and kaeza.
 local disallowed = {
 	["guest"]				=	"Guest accounts are disallowed on this server.  "..

mods/command/kits.lua

@@ -4,13 +4,14 @@ minetest.register_chatcommand("kit", {
     privs = {},
     func = function(name, param)
 		if param == "" then
-			minetest.chat_send_player(name, "No kit selected use ... Aviable : noob , pvp")
+			minetest.chat_send_player(name, "No kit selected ... ")
+			minetest.chat_send_player(name, "List of Kit: noob , pvp")
 		end
 		local receiverref = core.get_player_by_name(name)
 		if param == "noob" then
 			receiverref:get_inventory():add_item('main', 'default:pick_steel')
 			receiverref:get_inventory():add_item('main', 'default:shovel_steel')
-			receiverref:get_inventory():add_item('main', 'default:torch 16')
+			receiverref:get_inventory():add_item('main', 'torch:torch 16')
 			receiverref:get_inventory():add_item('main', 'default:axe_steel')
 			receiverref:get_inventory():add_item('main', 'default:cobble 64')
 		end
@@ -23,4 +24,4 @@ minetest.register_chatcommand("kit", {
 			receiverref:get_inventory():add_item('main', '3d_armor:boots_diamond')
 		end
     end
-})
+})

mods/command/time.lua

@@ -4,11 +4,11 @@ minetest.register_chatcommand("night", {
     description = "Make the night",
     privs = {settime = true},
     func = function(name, param)
-		local player = minetest.env:get_player_by_name(name)
+		local player = minetest.get_player_by_name(name)
 		if not player then
 			return
 		end
-       minetest.env:set_timeofday(0.22)
+       minetest.set_timeofday(0.22)
     end
 })
 
@@ -17,11 +17,11 @@ minetest.register_chatcommand("day", {
     description = "Make the day wakeup",
     privs = {settime = true},
     func = function(name, param)
-		local player = minetest.env:get_player_by_name(name)
+		local player = minetest.get_player_by_name(name)
 		if not player then
 			return
 		end
-		minetest.env:set_timeofday(0.6)
+		minetest.set_timeofday(0.6)
     end
 })
 

mods/default/functions.lua

@@ -10,7 +10,7 @@
 			local z = math.random(0, 9)/3
 			pos.x = pos.x + x
 			pos.z = pos.z + z
-			minetest.env:add_item(pos, stack)
+			minetest.add_item(pos, stack)
 			stack:clear()
 			inv:set_stack("main", i, stack)
 			pos.x = pos.x - x
@@ -24,11 +24,11 @@
 --
 
 default.cool_lava_source = function(pos)
-	minetest.env:set_node(pos, {name="default:obsidian"})
+	minetest.set_node(pos, {name="default:obsidian"})
 end
 
 default.cool_lava_flowing = function(pos)
-	minetest.env:set_node(pos, {name="default:stone"})
+	minetest.set_node(pos, {name="default:stone"})
 end
 
 minetest.register_abm({
@@ -58,17 +58,17 @@ minetest.register_abm({
 -- Functions
 grow_cactus = function(pos, node)
 	pos.y = pos.y-1
-	local name = minetest.env:get_node(pos).name
+	local name = minetest.get_node(pos).name
 	if minetest.get_item_group(name, "sand") ~= 0 then
 		pos.y = pos.y+1
 		local height = 0
-		while minetest.env:get_node(pos).name == "default:cactus" and height < 4 do
+		while minetest.get_node(pos).name == "default:cactus" and height < 4 do
 			height = height+1
 			pos.y = pos.y+1
 		end
 		if height < 4 then
-			if minetest.env:get_node(pos).name == "air" then
+			if minetest.get_node(pos).name == "air" then
-				minetest.env:set_node(pos, {name="default:cactus"})
+				minetest.set_node(pos, {name="default:cactus"})
 			end
 		end
 	end
@@ -76,20 +76,20 @@ end
 
 grow_reeds = function(pos, node)
 	pos.y = pos.y-1
-	local name = minetest.env:get_node(pos).name
+	local name = minetest.get_node(pos).name
 	if name == "default:dirt" or name == "default:dirt_with_grass" then
-		if minetest.env:find_node_near(pos, 3, {"group:water"}) == nil then
+		if minetest.find_node_near(pos, 3, {"group:water"}) == nil then
 			return
 		end
 		pos.y = pos.y+1
 		local height = 0
-		while minetest.env:get_node(pos).name == "default:reeds" and height < 3 do
+		while minetest.get_node(pos).name == "default:reeds" and height < 3 do
 			height = height+1
 			pos.y = pos.y+1
 		end
 		if height < 3 then
-			if minetest.env:get_node(pos).name == "air" then
+			if minetest.get_node(pos).name == "air" then
-				minetest.env:set_node(pos, {name="default:reeds"})
+				minetest.set_node(pos, {name="default:reeds"})
 			end
 		end
 	end
@@ -106,11 +106,11 @@ minetest.register_abm({
 		for xp=-1,1 do
 			for zp=-1,1 do
 				local p = {x=pos.x+xp, y=pos.y, z=pos.z+zp}
-				local n = minetest.env:get_node(p)
+				local n = minetest.get_node(p)
 				-- On verifie si il y a de l'eau
 				if (n.name=="default:water_flowing") then
 						drop_attached_node(pos)
-						minetest.env:dig_node(pos)
+						minetest.dig_node(pos)
 						break
 				end
 			end
@@ -118,11 +118,11 @@ minetest.register_abm({
 		-- cas rare
 		for yp=-1,1 do
 			local p = {x=pos.x, y=pos.y+yp, z=pos.z}
-			local n = minetest.env:get_node(p)
+			local n = minetest.get_node(p)
 			-- On verifie si il y a de l'eau
 			if (n.name=="default:water_flowing") then
 				drop_attached_node(pos)
-				minetest.env:dig_node(pos)
+				minetest.dig_node(pos)
 				break
 			end
 		end
@@ -161,9 +161,9 @@ minetest.register_on_dignode(function(pos, node)
 	while timber_nodenames[i]~=nil do
 		if node.name==timber_nodenames[i] then
 			np={x=pos.x, y=pos.y+1, z=pos.z}
-			while minetest.env:get_node(np).name==timber_nodenames[i] do
+			while minetest.get_node(np).name==timber_nodenames[i] do
-				minetest.env:remove_node(np)
+				minetest.remove_node(np)
-				minetest.env:add_item(np, timber_nodenames[i])
+				minetest.add_item(np, timber_nodenames[i])
 				np={x=np.x, y=np.y+1, z=np.z}
 			end
 		end
@@ -183,9 +183,9 @@ function get_nodedef_field(nodename, fieldname)
 end
 
 function set_fire(pointed_thing)
-		local n = minetest.env:get_node(pointed_thing.above)
+		local n = minetest.get_node(pointed_thing.above)
 		if n.name ~= ""  and n.name == "air" and not minetest.is_protected(pointed_thing.above, "fire") then
-			minetest.env:add_node(pointed_thing.above, {name="fire:basic_flame"})
+			minetest.add_node(pointed_thing.above, {name="fire:basic_flame"})
 		end
 end
 
@@ -229,17 +229,17 @@ end
 
 function generate_tree(pos, trunk, leaves, typearbre)
 	pos.y = pos.y-1
-	local nodename = minetest.env:get_node(pos).name
+	local nodename = minetest.get_node(pos).name
 		
 	pos.y = pos.y+1
-	if not minetest.env:get_node_light(pos) then
+	if not minetest.get_node_light(pos) then
 		return
 	end
 	if typearbre == nil or typearbre == 1 then
 		node = {name = ""}
 		for dy=1,4 do
 			pos.y = pos.y+dy
-			if minetest.env:get_node(pos).name ~= "air" then
+			if minetest.get_node(pos).name ~= "air" then
 				return
 			end
 			pos.y = pos.y-dy
@@ -247,8 +247,8 @@ function generate_tree(pos, trunk, leaves, typearbre)
 		node = {name = trunk}
 		for dy=0,4 do
 			pos.y = pos.y+dy
-			if minetest.env:get_node(pos).name == "air" then
+			if minetest.get_node(pos).name == "air" then
-				minetest.env:add_node(pos, node)
+				minetest.add_node(pos, node)
 			end
 			pos.y = pos.y-dy
 		end
@@ -267,40 +267,40 @@ function generate_tree(pos, trunk, leaves, typearbre)
 					pos.z = pos.z+dz
 
 					if dx == 0 and dz == 0 and dy==3 then
-						if minetest.env:get_node(pos).name == "air" and math.random(1, 5) <= 4 then
+						if minetest.get_node(pos).name == "air" and math.random(1, 5) <= 4 then
-							minetest.env:add_node(pos, node)
+							minetest.add_node(pos, node)
 							if rarity == 1 then
-								minetest.env:add_node(pos, apple_leave())
+								minetest.add_node(pos, apple_leave())
 							else
-								minetest.env:add_node(pos, air_leave())
+								minetest.add_node(pos, air_leave())
 							end
 						end
 					elseif dx == 0 and dz == 0 and dy==4 then
-						if minetest.env:get_node(pos).name == "air" and math.random(1, 5) <= 4 then
+						if minetest.get_node(pos).name == "air" and math.random(1, 5) <= 4 then
-							minetest.env:add_node(pos, node)
+							minetest.add_node(pos, node)
 							if rarity == 1 then
-								minetest.env:add_node(pos, apple_leave())
+								minetest.add_node(pos, apple_leave())
 							else
-								minetest.env:add_node(pos, air_leave())
+								minetest.add_node(pos, air_leave())
 							end
 						end
 					elseif math.abs(dx) ~= 2 and math.abs(dz) ~= 2 then
-						if minetest.env:get_node(pos).name == "air" then
+						if minetest.get_node(pos).name == "air" then
-							minetest.env:add_node(pos, node)
+							minetest.add_node(pos, node)
 							if rarity == 1 then
-								minetest.env:add_node(pos, apple_leave())
+								minetest.add_node(pos, apple_leave())
 							else
-								minetest.env:add_node(pos, air_leave())
+								minetest.add_node(pos, air_leave())
 							end
 						end
 					else
 						if math.abs(dx) ~= 2 or math.abs(dz) ~= 2 then
-							if minetest.env:get_node(pos).name == "air" and math.random(1, 5) <= 4 then
+							if minetest.get_node(pos).name == "air" and math.random(1, 5) <= 4 then
-								minetest.env:add_node(pos, node)
+								minetest.add_node(pos, node)
 							if rarity == 1 then
-								minetest.env:add_node(pos, apple_leave())
+								minetest.add_node(pos, apple_leave())
 							else
-								minetest.env:add_node(pos, air_leave())
+								minetest.add_node(pos, air_leave())
 							end
 							end
 						end
@@ -318,7 +318,7 @@ function generate_tree(pos, trunk, leaves, typearbre)
 		local tree_size = math.random(15, 25)
 		for dy=1,4 do
 			pos.y = pos.y+dy
-			if minetest.env:get_node(pos).name ~= "air" then
+			if minetest.get_node(pos).name ~= "air" then
 				return
 			end
 			pos.y = pos.y-dy
@@ -329,14 +329,14 @@ function generate_tree(pos, trunk, leaves, typearbre)
 			for dz=0,1 do
 					pos.z = pos.z + dz
 					--> 0
-					if minetest.env:get_node(pos).name == "default:dirt_with_grass" 
+					if minetest.get_node(pos).name == "default:dirt_with_grass" 
-					or  minetest.env:get_node(pos).name == "default:dirt" then else
+					or  minetest.get_node(pos).name == "default:dirt" then else
 							return
 					end
 					pos.x = pos.x+1
 					--> 1
-					if minetest.env:get_node(pos).name == "default:dirt_with_grass" 
+					if minetest.get_node(pos).name == "default:dirt_with_grass" 
-					or  minetest.env:get_node(pos).name == "default:dirt" then else
+					or  minetest.get_node(pos).name == "default:dirt" then else
 							return
 					end
 					pos.x = pos.x-1
@@ -353,43 +353,43 @@ function generate_tree(pos, trunk, leaves, typearbre)
 			for dz=-1,2 do
 				if dz == -1 then
 					pos.z = pos.z + dz
-					if math.random(1, 3) == 1 and minetest.env:get_node(pos).name == "air" then
+					if math.random(1, 3) == 1 and minetest.get_node(pos).name == "air" then
-						minetest.env:add_node(pos, {name = "default:vine", param2 = 4})
+						minetest.add_node(pos, {name = "default:vine", param2 = 4})
 					end
 					pos.x = pos.x+1
-					if math.random(1, 3) == 1 and  minetest.env:get_node(pos).name == "air" then
+					if math.random(1, 3) == 1 and  minetest.get_node(pos).name == "air" then
-						minetest.env:add_node(pos, {name = "default:vine", param2 = 4})
+						minetest.add_node(pos, {name = "default:vine", param2 = 4})
 					end
 					pos.x = pos.x-1
 					pos.z = pos.z - dz
 				elseif dz == 2 then
 					pos.z = pos.z + dz
-					if math.random(1, 3) == 1 and  minetest.env:get_node(pos).name == "air"then
+					if math.random(1, 3) == 1 and  minetest.get_node(pos).name == "air"then
-						minetest.env:add_node(pos, {name = "default:vine", param2 = 5})
+						minetest.add_node(pos, {name = "default:vine", param2 = 5})
 					end
 					pos.x = pos.x+1
-					if math.random(1, 3) == 1 and minetest.env:get_node(pos).name == "air" then
+					if math.random(1, 3) == 1 and minetest.get_node(pos).name == "air" then
-						minetest.env:add_node(pos, {name = "default:vine", param2 = 5})
+						minetest.add_node(pos, {name = "default:vine", param2 = 5})
 					end
 					pos.x = pos.x-1
 					pos.z = pos.z - dz
 				else
 					pos.z = pos.z + dz
 					pos.x = pos.x-1
-					if math.random(1, 3) == 1  and minetest.env:get_node(pos).name == "air" then
+					if math.random(1, 3) == 1  and minetest.get_node(pos).name == "air" then
-						minetest.env:add_node(pos, {name = "default:vine", param2 = 2})
+						minetest.add_node(pos, {name = "default:vine", param2 = 2})
 					end
 					pos.x = pos.x+1
-					if minetest.env:get_node(pos).name == "air" then
+					if minetest.get_node(pos).name == "air" then
-						minetest.env:add_node(pos, {name = trunk, param2=2})
+						minetest.add_node(pos, {name = trunk, param2=2})
 					end
 					pos.x = pos.x+1
-					if minetest.env:get_node(pos).name == "air" then
+					if minetest.get_node(pos).name == "air" then
-						minetest.env:add_node(pos, {name = trunk, param2=2})
+						minetest.add_node(pos, {name = trunk, param2=2})
 					end
 					pos.x = pos.x+1
-					if math.random(1, 3) == 1 and minetest.env:get_node(pos).name == "air" then
+					if math.random(1, 3) == 1 and minetest.get_node(pos).name == "air" then
-						minetest.env:add_node(pos, {name = "default:vine", param2 = 3})
+						minetest.add_node(pos, {name = "default:vine", param2 = 3})
 					end
 					pos.x = pos.x-2
 					pos.z = pos.z - dz
@@ -410,26 +410,26 @@ function generate_tree(pos, trunk, leaves, typearbre)
 					pos.z = pos.z+dz
 
 					if dx == 0 and dz == 0 and dy==3 then
-						if minetest.env:get_node(pos).name == "air" or minetest.env:get_node(pos).name == "default:vine" and math.random(1, 2) == 1 then
+						if minetest.get_node(pos).name == "air" or minetest.get_node(pos).name == "default:vine" and math.random(1, 2) == 1 then
-							minetest.env:add_node(pos, node)
+							minetest.add_node(pos, node)
 							end
 					elseif dx == 0 and dz == 0 and dy==4 then
-						if minetest.env:get_node(pos).name == "air" or minetest.env:get_node(pos).name == "default:vine"  and math.random(1, 5) == 1 then
+						if minetest.get_node(pos).name == "air" or minetest.get_node(pos).name == "default:vine"  and math.random(1, 5) == 1 then
-							minetest.env:add_node(pos, node)
+							minetest.add_node(pos, node)
-								minetest.env:add_node(pos, air_leave())
+								minetest.add_node(pos, air_leave())
 						end
 					elseif math.abs(dx) ~= 2 and math.abs(dz) ~= 2 then
-						if minetest.env:get_node(pos).name == "air" or minetest.env:get_node(pos).name == "default:vine"  then
+						if minetest.get_node(pos).name == "air" or minetest.get_node(pos).name == "default:vine"  then
-							minetest.env:add_node(pos, node)
+							minetest.add_node(pos, node)
 						end
 					else
 						if math.abs(dx) ~= 2 or math.abs(dz) ~= 2 then
-							if minetest.env:get_node(pos).name == "air" or minetest.env:get_node(pos).name == "default:vine" and math.random(1, 3) == 1 then
+							if minetest.get_node(pos).name == "air" or minetest.get_node(pos).name == "default:vine" and math.random(1, 3) == 1 then
-								minetest.env:add_node(pos, node)
+								minetest.add_node(pos, node)
 							end
 						else
-							if math.random(1, 5) == 1 and minetest.env:get_node(pos).name == "air" then
+							if math.random(1, 5) == 1 and minetest.get_node(pos).name == "air" then
-								minetest.env:add_node(pos, node)
+								minetest.add_node(pos, node)
 							end
 						end
 					end
@@ -471,51 +471,51 @@ end)
 
 function duengen(pointed_thing)
 	pos = pointed_thing.under
-	n = minetest.env:get_node(pos)
+	n = minetest.get_node(pos)
 	if n.name == "" then return end
 	local stage = ""
 	if n.name == "default:sapling" then
-		minetest.env:add_node(pos, {name="air"})
+		minetest.add_node(pos, {name="air"})
 		generate_tree(pos, "default:tree", "default:leaves", 1)
 	elseif string.find(n.name, "farming:wheat_") ~= nil then
 		stage = string.sub(n.name, 15)
 		if stage == "3" then
-			minetest.env:add_node(pos, {name="farming:wheat"})
+			minetest.add_node(pos, {name="farming:wheat"})
 		elseif math.random(1,5) < 3 then
-			minetest.env:add_node(pos, {name="farming:wheat"})
+			minetest.add_node(pos, {name="farming:wheat"})
 		else
-			minetest.env:add_node(pos, {name="farming:wheat_"..math.random(2,3)})
+			minetest.add_node(pos, {name="farming:wheat_"..math.random(2,3)})
 		end
 	elseif string.find(n.name, "farming:potato_") ~= nil then
 		stage = tonumber(string.sub(n.name, 16))
 		if stage == 1 then
-			minetest.env:add_node(pos, {name="farming:potato_"..math.random(stage,2)})
+			minetest.add_node(pos, {name="farming:potato_"..math.random(stage,2)})
 		else
-			minetest.env:add_node(pos, {name="farming:potato"})
+			minetest.add_node(pos, {name="farming:potato"})
 		end
 	elseif string.find(n.name, "farming:carrot_") ~= nil then
 		stage = tonumber(string.sub(n.name, 16))
 		if stage == 1 then
-			minetest.env:add_node(pos, {name="farming:carrot_"..math.random(stage,2)})
+			minetest.add_node(pos, {name="farming:carrot_"..math.random(stage,2)})
 		else
-			minetest.env:add_node(pos, {name="farming:carrot"})
+			minetest.add_node(pos, {name="farming:carrot"})
 		end
 	elseif string.find(n.name, "farming:pumpkin_") ~= nil then
 		stage = tonumber(string.sub(n.name, 17))
 		if stage == 1 then
-			minetest.env:add_node(pos, {name="farming:pumpkin_"..math.random(stage,2)})
+			minetest.add_node(pos, {name="farming:pumpkin_"..math.random(stage,2)})
 		else
-			minetest.env:add_node(pos, {name="farming:pumpkintige_unconnect"})
+			minetest.add_node(pos, {name="farming:pumpkintige_unconnect"})
 		end
 	elseif string.find(n.name, "farming:melontige_") ~= nil then
 		stage = tonumber(string.sub(n.name, 18))
 		if stage == 1 then
-			minetest.env:add_node(pos, {name="farming:melontige_"..math.random(stage,2)})
+			minetest.add_node(pos, {name="farming:melontige_"..math.random(stage,2)})
 		else
-			minetest.env:add_node(pos, {name="farming:melontige_unconnect"})
+			minetest.add_node(pos, {name="farming:melontige_unconnect"})
 		end
 	elseif n.name ~= ""  and n.name == "default:junglesapling" then
-		minetest.env:add_node(pos, {name="air"})
+		minetest.add_node(pos, {name="air"})
 		generate_tree(pos, "default:jungletree", "default:jungleleaves", 2)
 	elseif n.name ~="" and n.name == "default:reeds" then
 		grow_reeds(pos)
@@ -526,14 +526,14 @@ function duengen(pointed_thing)
 			for j = -3, 2, 1 do
 				pos = pointed_thing.above
 				pos = {x=pos.x+i, y=pos.y, z=pos.z+j}
-				n = minetest.env:get_node(pos)
+				n = minetest.get_node(pos)
-				n2 = minetest.env:get_node({x=pos.x, y=pos.y-1, z=pos.z})
+				n2 = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z})
 
 				if n.name ~= ""  and n.name == "air" and n2.name == "default:dirt_with_grass" then
 					if math.random(0,5) > 3 then
-						minetest.env:add_node(pos, {name=plant_tab[math.random(0, rnd_max)]})
+						minetest.add_node(pos, {name=plant_tab[math.random(0, rnd_max)]})
 					else
-						minetest.env:add_node(pos, {name=plant_tab[math.random(0, 5)]})
+						minetest.add_node(pos, {name=plant_tab[math.random(0, 5)]})
 					end
 
 				end
@@ -559,7 +559,7 @@ minetest.register_abm({
 	local can_change = 0
 	for i=1,4 do
 			local p = {x=pos.x, y=pos.y+i, z=pos.z}
-			local n = minetest.env:get_node(p)
+			local n = minetest.get_node(p)
 			-- On verifie si il y a de l'air
 			if (n.name=="air") then
 				can_change = can_change + 1
@@ -568,7 +568,7 @@ minetest.register_abm({
 		if can_change > 3 then
 			local light = minetest.get_node_light(pos)
 			if light or light > 10 then
-				minetest.env:add_node(pos, {name="default:dirt_with_grass"})
+				minetest.add_node(pos, {name="default:dirt_with_grass"})
 			end
 			
 		end
@@ -589,7 +589,7 @@ minetest.register_abm({
 	action = function(pos)
 		local light = minetest.get_node_light(pos)
 		if light or light > 10 then
-		minetest.env:add_node(pos, {name="air"})
+		minetest.add_node(pos, {name="air"})
 		generate_tree(pos, "default:tree", "default:leaves", 1)
 		end
 	end,
@@ -604,7 +604,7 @@ minetest.register_abm({
 	action = function(pos)
 		local light = minetest.get_node_light(pos)
 		if light or light > 10 then
-			minetest.env:add_node(pos, {name="air"})
+			minetest.add_node(pos, {name="air"})
 			generate_tree(pos, "default:jungletree", "default:jungleleaves", 2)
 		end
 	end,
@@ -619,10 +619,10 @@ minetest.register_abm({
 	chance = 5,
 	action = function(pos, node, active_object_count, active_object_count_wider)
 		local newpos = {x=pos.x, y=pos.y-1, z=pos.z}
-		local n = minetest.env:get_node(newpos)
+		local n = minetest.get_node(newpos)
 		if n.name == "air" then
 			walldir = node.param2
-			minetest.env:add_node(newpos, {name = "default:vine", param2 = walldir})
+			minetest.add_node(newpos, {name = "default:vine", param2 = walldir})
 		end
 	end
 })
@@ -638,7 +638,7 @@ snowball_VELOCITY=19
 --Shoot snowball.
 snow_shoot_snowball=function (item, player, pointed_thing)
 	local playerpos=player:getpos()
-	local obj=minetest.env:add_entity({x=playerpos.x,y=playerpos.y+1.5,z=playerpos.z}, "default:snowball_entity")
+	local obj=minetest.add_entity({x=playerpos.x,y=playerpos.y+1.5,z=playerpos.z}, "default:snowball_entity")
 	local dir=player:get_look_dir()
 	obj:setvelocity({x=dir.x*snowball_VELOCITY, y=dir.y*snowball_VELOCITY, z=dir.z*snowball_VELOCITY})
 	obj:setacceleration({x=dir.x*-3, y=-snowball_GRAVITY, z=dir.z*-3})
@@ -659,7 +659,7 @@ snowball_ENTITY={
 snowball_ENTITY.on_step = function(self, dtime)
 	self.timer=self.timer+dtime
 	local pos = self.object:getpos()
-	local node = minetest.env:get_node(pos)
+	local node = minetest.get_node(pos)
 
 	--Become item when hitting a node.
 	if self.lastpos.x~=nil then --If there is no lastpos for some reason.
@@ -874,7 +874,7 @@ minetest.register_abm({
 		end
 		if not do_preserve then
 			-- Drop stuff other than the node itself
-			itemstacks = minetest.get_node_drops(n0.name)
+			local itemstacks = minetest.get_node_drops(n0.name)
 			for _, itemname in ipairs(itemstacks) do
 				if minetest.get_item_group(n0.name, "leafdecay_drop") ~= 0 or
 						itemname ~= n0.name then

mods/default/mapgen.lua

@@ -335,7 +335,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
 				if is_shallow then
 					for x1=-divlen,divlen do
 					for z1=-divlen,divlen do
-						if minetest.env:get_node({x=cx+x1,y=0,z=cz+z1}).name == "default:sand" then
+						if minetest.env:get_node({x=cx+x1,y=0,z=cz+z1}).name == "default:sand" or minetest.env:get_node({x=cx+x1,y=0,z=cz+z1}).name == "default:sandstone" then
 							minetest.env:set_node({x=cx+x1,y=0,z=cz+z1}, {name="default:clay"})
 						end
 					end
@@ -366,6 +366,12 @@ minetest.register_on_generated(function(minp, maxp, seed)
 						minetest.env:find_node_near({x=x,y=1,z=z}, 1, "default:water_source") then
 					default.make_reeds({x=x,y=2,z=z}, pr:next(2, 4))
 				end
+				if minetest.env:get_node({x=x,y=1,z=z}).name == "default:sand" then
+					if math.random(0,1000) == 1 then -- 0,12000
+						random_struct.call_struct(p,2)
+					end
+				end
+
 			end
 		end
 		end
@@ -443,6 +449,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
 						-- If dirt with grass, add grass
 						elseif nn == "default:dirt_with_grass" then
 							minetest.env:set_node(p,{name="default:grass"})
+							if math.random(0,12000) == 1 then 
+								random_struct.call_struct(p,1)
+							end
 						end
 					end
 				end

mods/random_struct/init.lua

@@ -15,5 +15,266 @@ random_struct.get_struct = function(file)
     return allnode
 end
 
+
+-- World edit function
+
+random_struct.valueversion_WE = function(value)
+	if value:find("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)") and not value:find("%{") then --previous list format
+		return 3
+	elseif value:find("^[^\"']+%{%d+%}") then
+		if value:find("%[\"meta\"%]") then --previous meta flat table format
+			return 2
+		end
+		return 1 --original flat table format
+	elseif value:find("%{") then --current nested table format
+		return 4
+	end
+	return 0 --unknown format
+end
+random_struct.allocate_WE  = function(originpos, value)
+	local huge = math.huge
+	local pos1x, pos1y, pos1z = huge, huge, huge
+	local pos2x, pos2y, pos2z = -huge, -huge, -huge
+	local originx, originy, originz = originpos.x, originpos.y, originpos.z
+	local count = 0
+	local version = random_struct.valueversion_WE (value)
+	if version == 1 or version == 2 then --flat table format
+		--obtain the node table
+		local get_tables = loadstring(value)
+		if get_tables then --error loading value
+			return originpos, originpos, count
+		end
+		local tables = get_tables()
+
+		--transform the node table into an array of nodes
+		for i = 1, #tables do
+			for j, v in pairs(tables[i]) do
+				if type(v) == "table" then
+					tables[i][j] = tables[v[1]]
+				end
+			end
+		end
+		local nodes = tables[1]
+
+		--check the node array
+		count = #nodes
+		if version == 1 then --original flat table format
+			for index = 1, count do
+				local entry = nodes[index]
+				local pos = entry[1]
+				local x, y, z = originx - pos.x, originy - pos.y, originz - pos.z
+				if x < pos1x then pos1x = x end
+				if y < pos1y then pos1y = y end
+				if z < pos1z then pos1z = z end
+				if x > pos2x then pos2x = x end
+				if y > pos2y then pos2y = y end
+				if z > pos2z then pos2z = z end
+			end
+		else --previous meta flat table format
+			for index = 1, count do
+				local entry = nodes[index]
+				local x, y, z = originx - entry.x, originy - entry.y, originz - entry.z
+				if x < pos1x then pos1x = x end
+				if y < pos1y then pos1y = y end
+				if z < pos1z then pos1z = z end
+				if x > pos2x then pos2x = x end
+				if y > pos2y then pos2y = y end
+				if z > pos2z then pos2z = z end
+			end
+		end
+	elseif version == 3 then --previous list format
+		for x, y, z, name, param1, param2 in value:gmatch("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)%s+([^%s]+)%s+(%d+)%s+(%d+)[^\r\n]*[\r\n]*") do --match node entries
+			local x, y, z = originx + tonumber(x), originy + tonumber(y), originz + tonumber(z)
+			if x < pos1x then pos1x = x end
+			if y < pos1y then pos1y = y end
+			if z < pos1z then pos1z = z end
+			if x > pos2x then pos2x = x end
+			if y > pos2y then pos2y = y end
+			if z > pos2z then pos2z = z end
+			count = count + 1
+		end
+	elseif version == 4 then --current nested table format
+		--wip: this is a filthy hack that works surprisingly well
+		value = value:gsub("return%s*{", "", 1):gsub("}%s*$", "", 1)
+		local escaped = value:gsub("\\\\", "@@"):gsub("\\\"", "@@"):gsub("(\"[^\"]*\")", function(s) return string.rep("@", #s) end)
+		local startpos, startpos1, endpos = 1, 1
+		local nodes = {}
+		while true do
+			startpos, endpos = escaped:find("},%s*{", startpos)
+			if not startpos then
+				break
+			end
+			local current = value:sub(startpos1, startpos)
+			table.insert(nodes, minetest.deserialize("return " .. current))
+			startpos, startpos1 = endpos, endpos
+		end
+		table.insert(nodes, minetest.deserialize("return " .. value:sub(startpos1)))
+
+		--local nodes = minetest.deserialize(value) --wip: this is broken for larger tables in the current version of LuaJIT
+
+		count = #nodes
+		for index = 1, count do
+			local entry = nodes[index]
+			local x, y, z = originx + entry.x, originy + entry.y, originz + entry.z
+			if x < pos1x then pos1x = x end
+			if y < pos1y then pos1y = y end
+			if z < pos1z then pos1z = z end
+			if x > pos2x then pos2x = x end
+			if y > pos2y then pos2y = y end
+			if z > pos2z then pos2z = z end
+		end
+	end
+	local pos1 = {x=pos1x, y=pos1y, z=pos1z}
+	local pos2 = {x=pos2x, y=pos2y, z=pos2z}
+	return pos1, pos2, count
+end
+random_struct.deserialise_WE = function(originpos, value)
+	--make area stay loaded
+	local pos1, pos2 = random_struct.allocate_WE(originpos, value)
+	local manip = minetest.get_voxel_manip()
+	manip:read_from_map(pos1, pos2)
+
+	local originx, originy, originz = originpos.x, originpos.y, originpos.z
+	local count = 0
+	local add_node, get_meta = minetest.add_node, minetest.get_meta
+	local version = random_struct.valueversion_WE(value)
+	if version == 1 or version == 2 then --original flat table format
+		--obtain the node table
+		local get_tables = loadstring(value)
+		if not get_tables then --error loading value
+			return count
+		end
+		local tables = get_tables()
+
+		--transform the node table into an array of nodes
+		for i = 1, #tables do
+			for j, v in pairs(tables[i]) do
+				if type(v) == "table" then
+					tables[i][j] = tables[v[1]]
+				end
+			end
+		end
+		local nodes = tables[1]
+
+		--load the node array
+		count = #nodes
+		if version == 1 then --original flat table format
+			for index = 1, count do
+				local entry = nodes[index]
+				local pos = entry[1]
+				pos.x, pos.y, pos.z = originx - pos.x, originy - pos.y, originz - pos.z
+				add_node(pos, entry[2])
+			end
+		else --previous meta flat table format
+			for index = 1, #nodes do
+				local entry = nodes[index]
+				entry.x, entry.y, entry.z = originx + entry.x, originy + entry.y, originz + entry.z
+				add_node(entry, entry) --entry acts both as position and as node
+				get_meta(entry):from_table(entry.meta)
+			end
+		end
+	elseif version == 3 then --previous list format
+		local pos = {x=0, y=0, z=0}
+		local node = {name="", param1=0, param2=0}
+		for x, y, z, name, param1, param2 in value:gmatch("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)%s+([^%s]+)%s+(%d+)%s+(%d+)[^\r\n]*[\r\n]*") do --match node entries
+			pos.x, pos.y, pos.z = originx + tonumber(x), originy + tonumber(y), originz + tonumber(z)
+			node.name, node.param1, node.param2 = name, param1, param2
+			add_node(pos, node)
+			count = count + 1
+		end
+	elseif version == 4 then --current nested table format
+		--wip: this is a filthy hack that works surprisingly well
+		value = value:gsub("return%s*{", "", 1):gsub("}%s*$", "", 1)
+		local escaped = value:gsub("\\\\", "@@"):gsub("\\\"", "@@"):gsub("(\"[^\"]*\")", function(s) return string.rep("@", #s) end)
+		local startpos, startpos1, endpos = 1, 1
+		local nodes = {}
+		while true do
+			startpos, endpos = escaped:find("},%s*{", startpos)
+			if not startpos then
+				break
+			end
+			local current = value:sub(startpos1, startpos)
+			table.insert(nodes, minetest.deserialize("return " .. current))
+			startpos, startpos1 = endpos, endpos
+		end
+		table.insert(nodes, minetest.deserialize("return " .. value:sub(startpos1)))
+
+		--local nodes = minetest.deserialize(value) --wip: this is broken for larger tables in the current version of LuaJIT
+
+		--load the nodes
+		count = #nodes
+		for index = 1, count do
+			local entry = nodes[index]
+			entry.x, entry.y, entry.z = originx + entry.x, originy + entry.y, originz + entry.z
+			add_node(entry, entry) --entry acts both as position and as node
+		end
+
+		--load the metadata
+		for index = 1, count do
+			local entry = nodes[index]
+			get_meta(entry):from_table(entry.meta)
+		end
+	end
+	return count
+end
+
+-- End of world edit deserialise part
+
+
+-- The call of Struct
+random_struct.call_struct= function(pos, struct_style)	
+			-- 1 : City , 2 : Temple Sand
+			if struct_style == 1 then
+			  random_struct.generatecity(pos)
+			elseif struct_style == 2 then
+			  random_struct.generate_temple_sand(pos)
+			end
+end
+
+random_struct.generatecity = function(pos)
+	-- No Generating for the moment only place it :D
+	local city = random_struct.get_struct("pnj_town_1.we")
+	local newpos = {x=pos.x,y=pos.y,z=pos.z}
+	if newpos == nil then
+		return
+	end
+	random_struct.deserialise_WE(newpos, city )
+end
+
+random_struct.generate_temple_sand = function(pos)
+	-- No Generating for the temple ... Why using it ? No Change
+	local temple = random_struct.get_struct("desert_temple.we")
+	local newpos = {x=pos.x,y=pos.y-12,z=pos.z}
+	if newpos == nil then
+		return
+	end
+	random_struct.deserialise_WE(newpos, temple)
+end
+
+
+-- Debug command
+minetest.register_chatcommand("spawnstruct", {
+	params = "",
+	description = "Spawn a Struct.",
+	func = function(name, param)
+		local pos= minetest.get_player_by_name(name):getpos()
+		if not pos then
+			return
+		end
+		if param == "" or param == "help" then
+			minetest.chat_send_player(name, "Please use instruction /spawnstruct TYPE")
+			minetest.chat_send_player(name, "TYPE avaiable : town, temple_sand")
+		end
+		if param == "town" then
+			random_struct.generatecity(pos)
+			minetest.chat_send_player(name, "Town Created")
+		end
+		if param == "temple_sand" then
+			random_struct.generate_temple_sand(pos)
+			minetest.chat_send_player(name, "Temple Sand Created")
+		end
+	end
+})
+
 local time_to_load= os.clock() - init
 print(string.format("[MOD] "..minetest.get_current_modname().." loaded in %.4f s", time_to_load))

mods/random_struct/init.lua~

@@ -0,0 +1,282 @@
+local init = os.clock()
+random_struct ={}
+
+random_struct.get_struct = function(file)
+	local localfile = minetest.get_modpath("random_struct").."/build/"..file
+	local file, errorload = io.open(localfile, "rb")
+	if errorload ~= nil then
+	    minetest.log("action", '[Random_Struct] error: could not open this struct "' .. localfile .. '"')
+	    return nil
+	end
+
+   local allnode = file:read("*a")
+   file:close()
+
+    return allnode
+end
+
+
+-- World edit function
+
+random_struct.valueversion_WE = function(value)
+	if value:find("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)") and not value:find("%{") then --previous list format
+		return 3
+	elseif value:find("^[^\"']+%{%d+%}") then
+		if value:find("%[\"meta\"%]") then --previous meta flat table format
+			return 2
+		end
+		return 1 --original flat table format
+	elseif value:find("%{") then --current nested table format
+		return 4
+	end
+	return 0 --unknown format
+end
+random_struct.allocate_WE  = function(originpos, value)
+	local huge = math.huge
+	local pos1x, pos1y, pos1z = huge, huge, huge
+	local pos2x, pos2y, pos2z = -huge, -huge, -huge
+	local originx, originy, originz = originpos.x, originpos.y, originpos.z
+	local count = 0
+	local version = random_struct.valueversion_WE (value)
+	if version == 1 or version == 2 then --flat table format
+		--obtain the node table
+		local get_tables = loadstring(value)
+		if get_tables then --error loading value
+			return originpos, originpos, count
+		end
+		local tables = get_tables()
+
+		--transform the node table into an array of nodes
+		for i = 1, #tables do
+			for j, v in pairs(tables[i]) do
+				if type(v) == "table" then
+					tables[i][j] = tables[v[1]]
+				end
+			end
+		end
+		local nodes = tables[1]
+
+		--check the node array
+		count = #nodes
+		if version == 1 then --original flat table format
+			for index = 1, count do
+				local entry = nodes[index]
+				local pos = entry[1]
+				local x, y, z = originx - pos.x, originy - pos.y, originz - pos.z
+				if x < pos1x then pos1x = x end
+				if y < pos1y then pos1y = y end
+				if z < pos1z then pos1z = z end
+				if x > pos2x then pos2x = x end
+				if y > pos2y then pos2y = y end
+				if z > pos2z then pos2z = z end
+			end
+		else --previous meta flat table format
+			for index = 1, count do
+				local entry = nodes[index]
+				local x, y, z = originx - entry.x, originy - entry.y, originz - entry.z
+				if x < pos1x then pos1x = x end
+				if y < pos1y then pos1y = y end
+				if z < pos1z then pos1z = z end
+				if x > pos2x then pos2x = x end
+				if y > pos2y then pos2y = y end
+				if z > pos2z then pos2z = z end
+			end
+		end
+	elseif version == 3 then --previous list format
+		for x, y, z, name, param1, param2 in value:gmatch("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)%s+([^%s]+)%s+(%d+)%s+(%d+)[^\r\n]*[\r\n]*") do --match node entries
+			local x, y, z = originx + tonumber(x), originy + tonumber(y), originz + tonumber(z)
+			if x < pos1x then pos1x = x end
+			if y < pos1y then pos1y = y end
+			if z < pos1z then pos1z = z end
+			if x > pos2x then pos2x = x end
+			if y > pos2y then pos2y = y end
+			if z > pos2z then pos2z = z end
+			count = count + 1
+		end
+	elseif version == 4 then --current nested table format
+		--wip: this is a filthy hack that works surprisingly well
+		value = value:gsub("return%s*{", "", 1):gsub("}%s*$", "", 1)
+		local escaped = value:gsub("\\\\", "@@"):gsub("\\\"", "@@"):gsub("(\"[^\"]*\")", function(s) return string.rep("@", #s) end)
+		local startpos, startpos1, endpos = 1, 1
+		local nodes = {}
+		while true do
+			startpos, endpos = escaped:find("},%s*{", startpos)
+			if not startpos then
+				break
+			end
+			local current = value:sub(startpos1, startpos)
+			table.insert(nodes, minetest.deserialize("return " .. current))
+			startpos, startpos1 = endpos, endpos
+		end
+		table.insert(nodes, minetest.deserialize("return " .. value:sub(startpos1)))
+
+		--local nodes = minetest.deserialize(value) --wip: this is broken for larger tables in the current version of LuaJIT
+
+		count = #nodes
+		for index = 1, count do
+			local entry = nodes[index]
+			local x, y, z = originx + entry.x, originy + entry.y, originz + entry.z
+			if x < pos1x then pos1x = x end
+			if y < pos1y then pos1y = y end
+			if z < pos1z then pos1z = z end
+			if x > pos2x then pos2x = x end
+			if y > pos2y then pos2y = y end
+			if z > pos2z then pos2z = z end
+		end
+	end
+	local pos1 = {x=pos1x, y=pos1y, z=pos1z}
+	local pos2 = {x=pos2x, y=pos2y, z=pos2z}
+	return pos1, pos2, count
+end
+random_struct.deserialise_WE = function(originpos, value)
+	--make area stay loaded
+	local pos1, pos2 = random_struct.allocate_WE(originpos, value)
+	local manip = minetest.get_voxel_manip()
+	manip:read_from_map(pos1, pos2)
+
+	local originx, originy, originz = originpos.x, originpos.y, originpos.z
+	local count = 0
+	local add_node, get_meta = minetest.add_node, minetest.get_meta
+	local version = random_struct.valueversion_WE(value)
+	if version == 1 or version == 2 then --original flat table format
+		--obtain the node table
+		local get_tables = loadstring(value)
+		if not get_tables then --error loading value
+			return count
+		end
+		local tables = get_tables()
+
+		--transform the node table into an array of nodes
+		for i = 1, #tables do
+			for j, v in pairs(tables[i]) do
+				if type(v) == "table" then
+					tables[i][j] = tables[v[1]]
+				end
+			end
+		end
+		local nodes = tables[1]
+
+		--load the node array
+		count = #nodes
+		if version == 1 then --original flat table format
+			for index = 1, count do
+				local entry = nodes[index]
+				local pos = entry[1]
+				pos.x, pos.y, pos.z = originx - pos.x, originy - pos.y, originz - pos.z
+				add_node(pos, entry[2])
+			end
+		else --previous meta flat table format
+			for index = 1, #nodes do
+				local entry = nodes[index]
+				entry.x, entry.y, entry.z = originx + entry.x, originy + entry.y, originz + entry.z
+				add_node(entry, entry) --entry acts both as position and as node
+				get_meta(entry):from_table(entry.meta)
+			end
+		end
+	elseif version == 3 then --previous list format
+		local pos = {x=0, y=0, z=0}
+		local node = {name="", param1=0, param2=0}
+		for x, y, z, name, param1, param2 in value:gmatch("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)%s+([^%s]+)%s+(%d+)%s+(%d+)[^\r\n]*[\r\n]*") do --match node entries
+			pos.x, pos.y, pos.z = originx + tonumber(x), originy + tonumber(y), originz + tonumber(z)
+			node.name, node.param1, node.param2 = name, param1, param2
+			add_node(pos, node)
+			count = count + 1
+		end
+	elseif version == 4 then --current nested table format
+		--wip: this is a filthy hack that works surprisingly well
+		value = value:gsub("return%s*{", "", 1):gsub("}%s*$", "", 1)
+		local escaped = value:gsub("\\\\", "@@"):gsub("\\\"", "@@"):gsub("(\"[^\"]*\")", function(s) return string.rep("@", #s) end)
+		local startpos, startpos1, endpos = 1, 1
+		local nodes = {}
+		while true do
+			startpos, endpos = escaped:find("},%s*{", startpos)
+			if not startpos then
+				break
+			end
+			local current = value:sub(startpos1, startpos)
+			table.insert(nodes, minetest.deserialize("return " .. current))
+			startpos, startpos1 = endpos, endpos
+		end
+		table.insert(nodes, minetest.deserialize("return " .. value:sub(startpos1)))
+
+		--local nodes = minetest.deserialize(value) --wip: this is broken for larger tables in the current version of LuaJIT
+
+		--load the nodes
+		count = #nodes
+		for index = 1, count do
+			local entry = nodes[index]
+			entry.x, entry.y, entry.z = originx + entry.x, originy + entry.y, originz + entry.z
+			add_node(entry, entry) --entry acts both as position and as node
+		end
+
+		--load the metadata
+		for index = 1, count do
+			local entry = nodes[index]
+			get_meta(entry):from_table(entry.meta)
+		end
+	end
+	return count
+end
+
+-- End of world edit deserialise part
+
+
+-- The call of Struct
+random_struct.call_struct= function(pos, struct_style)
+		if math.random(1,2) == 1 then		
+			-- 1 : City , 2 : Temple Sand
+			if struct_style == 1 then
+			  random_struct.generatecity(pos)
+			elseif struct_style == 2 then
+			  random_struct.generate_temple_sand(pos)
+			end
+		end
+end
+
+random_struct.generatecity = function(pos)
+	-- No Generating for the moment only place it :D
+	local city = random_struct.get_struct("pnj_town_1.we")
+	local newpos = {x=pos.x,y=pos.y,z=pos.z}
+	if newpos == nil then
+		return
+	end
+	random_struct.deserialise_WE(newpos, city )
+end
+
+random_struct.generate_temple_sand = function(pos)
+	-- No Generating for the temple ... Why using it ? No Change
+	local temple = random_struct.get_struct("desert_temple.we")
+	local newpos = {x=pos.x,y=pos.y-12,z=pos.z}
+	if newpos == nil then
+		return
+	end
+	random_struct.deserialise_WE(newpos, temple)
+end
+
+
+-- Debug command
+minetest.register_chatcommand("spawnstruct", {
+	params = "",
+	description = "Spawn a Struct.",
+	func = function(name, param)
+		local pos= minetest.get_player_by_name(name):getpos()
+		if not pos then
+			return
+		end
+		if param == "" or param == "help" then
+			minetest.chat_send_player(name, "Please use instruction /spawnstruct TYPE")
+			minetest.chat_send_player(name, "TYPE avaiable : town, temple_sand")
+		end
+		if param == "town" then
+			random_struct.generatecity(pos)
+			minetest.chat_send_player(name, "Town Created")
+		end
+		if param == "temple_sand" then
+			random_struct.generate_temple_sand(pos)
+			minetest.chat_send_player(name, "Temple Sand Created")
+		end
+	end
+})
+
+local time_to_load= os.clock() - init
+print(string.format("[MOD] "..minetest.get_current_modname().." loaded in %.4f s", time_to_load))

mods/stairs/init.lua

@@ -36,6 +36,18 @@ function stairs.register_stair(subname, recipeitem, groups, images, description,
 					return itemstack
 				end
 			end
+			local futurpos = pointed_thing.under
+			local frontstair = {x=futurpos.x-1, y=futurpos.y+1, z=futurpos.z} 
+			local leftstair = {x=futurpos.x, y=futurpos.y+1, z=futurpos.z+1} 
+			print( minetest.get_node(frontstair).name)
+			if minetest.get_node(frontstair).name == "stairs:stair_"..subname.."" and minetest.get_node(leftstair).name == "stairs:stair_"..subname.."" then
+				local fakestack = ItemStack("stairs:stair_" .. subname.."_corner_1")
+				local ret = minetest.item_place(fakestack, placer, pointed_thing)
+				if ret:is_empty() then
+					itemstack:take_item()
+					return itemstack
+				end
+			end 
 			
 			-- Otherwise place regularly
 			return minetest.item_place(itemstack, placer, pointed_thing)
@@ -60,6 +72,24 @@ function stairs.register_stair(subname, recipeitem, groups, images, description,
 		},
 	})
 
+	minetest.register_node(":stairs:stair_" .. subname.."_corner_1", {
+		drop = "stairs:stair_" .. subname,
+		drawtype = "nodebox",
+		tiles = images,
+		paramtype = "light",
+		paramtype2 = "facedir",
+		is_ground_content = true,
+		groups = groups,
+		sounds = sounds,
+		node_box = {
+			type = "fixed",
+			fixed = {
+				{-0.5, -0.5, -0.5, 0.5, 0, 0.5}, 
+				{-0.5, -0, -0, 0, 0.5, 0.5}, 
+			},
+		},
+	})
+
 	minetest.register_craft({
 		output = 'stairs:stair_' .. subname .. ' 4',
 		recipe = {