Initial waypoints tab upload

datastorage.lua

@@ -0,0 +1,83 @@
+datastorage={}
+datastorage["!registered_players"]={}
+
+datastorage.save_data = function(table_pointer)
+	local data = minetest.serialize( datastorage[table_pointer] )
+	local path = minetest.get_worldpath().."/datastorage_"..table_pointer..".data"
+	local file = io.open( path, "w" )
+	if( file ) then
+		file:write( data )
+		file:close()
+		return true
+	else return nil
+	end
+end
+
+datastorage.load_data = function(table_pointer)
+	local path = minetest.get_worldpath().."/datastorage_"..table_pointer..".data"
+	local file = io.open( path, "r" )
+	if( file ) then
+		local data = file:read("*all")
+		datastorage[table_pointer] = minetest.deserialize( data )
+		file:close()
+	return true
+	else return nil
+	end
+end
+
+datastorage.get_container = function (player, key)
+	local player_name = player:get_player_name()
+	local container = datastorage[player_name]
+	if container[key] == nil then
+		container[key] = {}
+	end
+	datastorage.save_data(player_name)
+	return container[key]
+end
+
+-- forced save of all player's data
+datastorage.save_container = function (player)
+	local player_name = player:get_player_name()
+	datastorage.save_data(player_name)
+end
+
+
+-- Init
+if datastorage.load_data("!registered_players") == nil then
+	datastorage["!registered_players"]={}
+	datastorage.save_data("!registered_players")
+end
+
+minetest.register_on_joinplayer(function(player)
+	local player_name = player:get_player_name()
+	local registered = nil
+	for __,tab in ipairs(datastorage["!registered_players"]) do
+		if tab["player_name"] == player_name then registered = true break end
+	end
+	if registered == nil then
+		local new={}
+		new["player_name"]=player_name
+		table.insert(datastorage["!registered_players"],new)
+		datastorage[player_name]={}
+		datastorage.save_data("!registered_players")
+		datastorage.save_data(player_name)
+	else 
+		datastorage.load_data(player_name)
+	end
+end
+)
+
+minetest.register_on_leaveplayer(function(player)
+	local player_name = player:get_player_name()
+	datastorage.save_data(player_name)
+	datastorage[player_name] = nil
+end
+)
+
+minetest.register_on_shutdown(function()
+	for __,tab in ipairs(datastorage["!registered_players"]) do
+		if datastorage[tab["player_name"]] == nil then break end
+		datastorage.save_data(tab["player_name"]) 
+	end
+end
+)