techage_modpack_ru_upd/hyperloop/data_base.lua

61 lines
1.6 KiB
Lua
Raw Normal View History

2020-05-31 23:31:18 +03:00
--[[
Hyperloop Mod
=============
Copyright (C) 2017-2019 Joachim Stolberg
LGPLv2.1+
See LICENSE.txt for more information
mod storage and data integrity
]]--
-- for lazy programmers
local S = function(pos) if pos then return minetest.pos_to_string(pos) end end
local P = minetest.string_to_pos
local M = minetest.get_meta
hyperloop.Stations = hyperloop.Network:new()
hyperloop.Elevators = hyperloop.Network:new()
-- Check all nodes on the map and delete useless data base entries
local function check_data_base()
-- used for VM get_node
local tube = tubelib2.Tube:new({})
hyperloop.Stations:filter(function(pos)
local _,node = tube:get_node(pos)
return node.name == "hyperloop:station" or node.name == "hyperloop:junction"
end)
hyperloop.Elevators:filter(function(pos)
local _,node = tube:get_node(pos)
return node.name == "hyperloop:elevator_bottom"
end)
end
local storage = minetest.get_mod_storage()
hyperloop.Stations:deserialize(storage:get_string("Stations"))
hyperloop.Elevators:deserialize(storage:get_string("Elevators"))
local function update_mod_storage()
minetest.log("action", "[Hyperloop] Store data...")
storage:set_string("Stations", hyperloop.Stations:serialize())
storage:set_string("Elevators", hyperloop.Elevators:serialize())
-- store data each hour
minetest.after(60*60, update_mod_storage)
minetest.log("action", "[Hyperloop] Data stored")
end
minetest.register_on_shutdown(function()
update_mod_storage()
end)
-- delete data base entries without corresponding nodes
minetest.after(5, check_data_base)
-- store data after one hour
minetest.after(60*60, update_mod_storage)