worldedit_hud_helper/io.lua

89 lines
2.5 KiB
Lua

local filepath_data = minetest.get_worldpath().."/worldedit_hud_helper_data.tsv"
-- Splits a string using a given delimiter.
-- @source https://stackoverflow.com/a/7615129/1460422
-- @param inputstr string The string to split.
-- @param sep string The delimiter.
-- @returns string[] A table of substrings split out of the input string.
local function split(inputstr, sep)
if sep == nil then
sep = "%s"
end
local t = {}
for str in string.gmatch(inputstr, "([^"..sep.."]+)") do
table.insert(t, str)
end
return t
end
--- Serialises and saves the settings for all players to disk.
-- Settings are saved to a file in the world's directory called
-- 'worldedit_hud_helper_data.tsv'.
-- @returns nil
function worldedit_hud_helper.save()
local result = {
table.concat({
"player_name",
"enabled",
"node_name_offset_y",
"rotation_offset_y"
}, "\t")
}
for player_name, player_info in pairs(worldedit_hud_helper.info) do
print("DEBUG player_name", player_name)
local next = table.concat({
player_name,
tostring(player_info.enabled),
tostring(player_info.node_name_offset_y),
tostring(player_info.rotation_offset_y),
}, "\t")
print("DEBUG next", next)
table.insert(result, next)
end
local handle = io.open(filepath_data, "w+")
handle:write(table.concat(result, "\n"))
handle:close()
end
--- Calls worldedit_hud_helper.save(), but pushes the call to the end of the
-- function queue.
function worldedit_hud_helper.save_defer()
minetest.after(0, function()
worldedit_hud_helper.save()
end)
end
--- Loads all the settings for all players from disk.
-- CAUTION: This should only be called ONCE on server start when no players are
-- connected!
-- Note that this does NOT reinitialise any player's HUDs, since it is expected
-- that they are not connected yet when this function is called.
-- Note also that if no settings have yet been saved to disk (i.e. the settings
-- file doesn't exist), then this function silently returns.
-- @returns nil
function worldedit_hud_helper.load()
local handle = io.open(filepath_data, "r")
if handle == nil then return end
local i = 0
for line in handle:lines() do
if i > 0 then
local parts = split(line)
local player_name = parts[1]
local player_info = worldedit_hud_helper.initialise_info(player_name)
player_info.enabled = parts[2]
player_info.node_name_offset_y = parts[3]
player_info.rotation_offset_y = parts[4]
end
i = i + 1
end
minetest.log("info", "[worldedit_hud_helper] Loaded per-world settings for "..i.." players.")
end