forked from mtcontrib/pipeworks
Add digilines to teleport tube and refactor code (#49)
This commit is contained in:
OgelGames
GitHub
@@ -1,206 +1,304 @@
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local S = minetest.get_translator("pipeworks")
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local filename=minetest.get_worldpath() .. "/teleport_tubes" -- Only used for backward-compat
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local storage=minetest.get_mod_storage()
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local filename = minetest.get_worldpath().."/teleport_tubes" -- Only used for backward-compat
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local storage = minetest.get_mod_storage()
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local tp_tube_db = nil -- nil forces a read
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local tp_tube_db_version = 4
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local has_digilines = minetest.get_modpath("digilines")
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-- cached rceiver list: hash(pos) => {receivers}
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local cache = {}
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-- V1: Serialized text file indexed by vector position.
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-- V2: Serialized text file indexed by hash position.
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-- V3: Mod storage using serialized tables.
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-- V4: Mod storage using "<can_receive>:<channel>" format.
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local tube_db_version = 4
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local tube_db = {}
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local receiver_cache = {}
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local function hash(pos)
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return string.format("%.30g", minetest.hash_node_position(pos))
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local function hash_pos(pos)
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vector.round(pos)
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return string.format("%.0f", minetest.hash_node_position(pos))
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end
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-- New entry format: <can receive (number)> ':' <channel (string)>
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local function serialize_tube_db_entry(entry)
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return entry.cr .. ":" .. entry.channel
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local function serialize_tube(tube)
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return string.format("%d:%s", tube.cr, tube.channel)
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end
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local function deserialize_tube_db_entry(hash, str)
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local sep = str:find(":", 2, true)
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if not sep then return minetest.deserialize(str) end
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local cr = tonumber(str:sub(1, sep - 1))
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if not cr then return minetest.deserialize(str) end
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local channel = str:sub(sep + 1)
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local pos = minetest.get_position_from_hash(tonumber(hash))
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return {x = pos.x, y = pos.y, z = pos.z, cr = cr, channel = channel}
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local function deserialize_tube(hash, str)
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local sep = str:sub(2, 2) == ":"
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local cr = tonumber(str:sub(1, 1))
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local channel = str:sub(3)
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if sep and cr and channel then
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local pos = minetest.get_position_from_hash(tonumber(hash))
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return {x = pos.x, y = pos.y, z = pos.z, cr = cr, channel = channel}
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end
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end
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local function save_tube_db()
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-- reset tp-tube cache
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cache = {}
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local fields = {version = tp_tube_db_version}
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for key, val in pairs(tp_tube_db) do
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fields[key] = serialize_tube_db_entry(val)
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receiver_cache = {}
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local fields = {version = tube_db_version}
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for key, val in pairs(tube_db) do
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fields[key] = serialize_tube(val)
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end
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storage:from_table({fields = fields})
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end
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local function save_tube_db_entry(hash)
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-- reset tp-tube cache
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cache = {}
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local function save_tube(hash)
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local tube = tube_db[hash]
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receiver_cache[tube.channel] = nil
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storage:set_string(hash, serialize_tube(tube))
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end
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local val = tp_tube_db[hash]
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storage:set_string(hash, val and serialize_tube_db_entry(val) or "")
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local function remove_tube(pos)
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local hash = hash_pos(pos)
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if tube_db[hash] then
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receiver_cache[tube_db[hash].channel] = nil
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tube_db[hash] = nil
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storage:set_string(hash, "")
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end
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end
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local function migrate_tube_db()
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local old_version = tp_tube_db.version or 0
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tp_tube_db.version = nil
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if old_version < 2.0 then
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local tmp_db = {}
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for _, val in pairs(tp_tube_db) do
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if(val.channel ~= "") then -- skip unconfigured tubes
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tmp_db[hash(val)] = val
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if storage:get_int("version") == 3 then
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for key, val in pairs(storage:to_table().fields) do
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if tonumber(key) then
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tube_db[key] = minetest.deserialize(val)
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elseif key ~= "version" then
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error("Unknown field in teleport tube database: "..key)
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end
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end
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tp_tube_db = tmp_db
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save_tube_db()
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return
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end
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local file = io.open(filename, "r")
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if file then
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local content = file:read("*all")
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io.close(file)
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if content and content ~= "" then
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tube_db = minetest.deserialize(content)
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end
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end
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local version = tube_db.version or 0
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tube_db.version = nil
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if version < 2 then
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local tmp_db = {}
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for _, val in pairs(tube_db) do
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if val.channel ~= "" then -- Skip unconfigured tubes
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tmp_db[hash_pos(val)] = val
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end
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end
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tube_db = tmp_db
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end
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save_tube_db()
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end
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local function read_tube_db()
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local file = not storage:contains("version") and io.open(filename, "r")
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if not file then
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tp_tube_db = {}
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local version = storage:get_int("version")
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if version < tube_db_version then
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migrate_tube_db()
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elseif version > tube_db_version then
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error("Cannot read teleport tube database of version "..version)
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else
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for key, val in pairs(storage:to_table().fields) do
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if tonumber(key) then
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tp_tube_db[key] = deserialize_tube_db_entry(key, val)
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elseif key == "version" then
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tp_tube_db.version = tonumber(val)
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else
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error("Unknown field in teleport tube DB: " .. key)
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tube_db[key] = deserialize_tube(key, val)
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elseif key ~= "version" then
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error("Unknown field in teleport tube database: "..key)
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end
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end
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end
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tube_db.version = nil
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end
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if tp_tube_db.version == nil then
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tp_tube_db.version = tp_tube_db_version
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storage:set_string("version", tp_tube_db.version)
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elseif tp_tube_db.version > tp_tube_db_version then
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error("Cannot read teleport tube DB of version " .. tp_tube_db.version)
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local function set_tube(pos, channel, cr)
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local hash = hash_pos(pos)
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local tube = tube_db[hash]
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if tube then
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if tube.channel ~= channel or tube.cr ~= cr then
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tube.channel = channel
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tube.cr = cr
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save_tube(hash)
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end
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else
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local file_content = file:read("*all")
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io.close(file)
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pipeworks.logger("Moving teleport tube DB into mod storage from " .. filename)
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if file_content and file_content ~= "" then
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tp_tube_db = minetest.deserialize(file_content)
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else
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tp_tube_db = {version = 2.0}
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end
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tube_db[hash] = {x = pos.x, y = pos.y, z = pos.z, channel = channel, cr = cr}
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save_tube(hash)
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end
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if(not tp_tube_db.version or tonumber(tp_tube_db.version) < tp_tube_db_version) then
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migrate_tube_db()
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end
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tp_tube_db.version = nil
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return tp_tube_db
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end
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-- debug formatter for coordinates used below
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local fmt = function(pos)
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return pos.x..", "..pos.y..", "..pos.z
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end
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-- updates or adds a tube
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local function set_tube(pos, channel, can_receive)
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local tubes = tp_tube_db or read_tube_db()
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local hash = hash(pos)
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local tube = tubes[hash]
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if tube then
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tube.channel = channel
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tube.cr = can_receive
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save_tube_db_entry(hash)
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return
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end
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-- we haven't found any tp tube to update, so lets add it
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-- but sanity check that the hash has not already been inserted.
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-- if so, complain very loudly and refuse the update so the player knows something is amiss.
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-- to catch regressions of https://github.com/minetest-mods/pipeworks/issues/166
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local existing = tp_tube_db[hash]
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if existing ~= nil then
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local e = "error"
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minetest.log(e, "pipeworks teleport tube update refused due to position hash collision")
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minetest.log(e, "collided hash: "..hash)
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minetest.log(e, "tried-to-place tube: "..fmt(pos))
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minetest.log(e, "existing tube: "..fmt(existing))
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return
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end
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tp_tube_db[hash] = {x=pos.x,y=pos.y,z=pos.z,channel=channel,cr=can_receive}
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save_tube_db_entry(hash)
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end
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local function remove_tube(pos)
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local tubes = tp_tube_db or read_tube_db()
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local hash = hash(pos)
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tubes[hash] = nil
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save_tube_db_entry(hash)
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end
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local function read_node_with_vm(pos)
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local vm = VoxelManip()
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local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
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local data = vm:get_data()
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local area = VoxelArea:new({MinEdge = MinEdge, MaxEdge = MaxEdge})
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return minetest.get_name_from_content_id(data[area:index(pos.x, pos.y, pos.z)])
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end
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local function get_receivers(pos, channel)
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local hash = minetest.hash_node_position(pos)
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local hash = hash_pos(pos)
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local cache = receiver_cache[channel] or {}
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if cache[hash] then
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-- re-use cached result
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return cache[hash]
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end
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local tubes = tp_tube_db or read_tube_db()
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local receivers = {}
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for key, val in pairs(tubes) do
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-- skip all non-receivers and the tube that it came from as early as possible, as this is called often
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if (val.cr == 1 and val.channel == channel and (val.x ~= pos.x or val.y ~= pos.y or val.z ~= pos.z)) then
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local is_loaded = (minetest.get_node_or_nil(val) ~= nil)
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local node_name = is_loaded and minetest.get_node(pos).name or read_node_with_vm(val)
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if minetest.registered_nodes[node_name] and minetest.registered_nodes[node_name].is_teleport_tube then
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for key, val in pairs(tube_db) do
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if val.cr == 1 and val.channel == channel and not vector.equals(val, pos) then
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minetest.load_area(val)
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local node_name = minetest.get_node(val).name
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if node_name:find("pipeworks:teleport_tube") then
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table.insert(receivers, val)
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else
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tp_tube_db[key] = nil
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save_tube_db_entry(key)
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remove_tube(val)
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end
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end
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end
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-- cache the result for next time
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cache[hash] = receivers
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receiver_cache[channel] = cache
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return receivers
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end
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local function update_meta(meta, can_receive)
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meta:set_int("can_receive", can_receive and 1 or 0)
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local cr_state = can_receive and "on" or "off"
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local itext = S("Channels are public by default").."\n"..
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S("Use <player>:<channel> for fully private channels").."\n"..
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S("Use <player>\\;<channel> for private receivers")
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local size = "8.5,4"
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meta:set_string("formspec",
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"formspec_version[2]"..
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"size["..size.."]"..
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pipeworks.fs_helpers.get_prepends(size) ..
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"image[0.5,o;1,1;pipeworks_teleport_tube_inv.png]"..
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"label[1.5,0.5;"..S("Teleporting Tube").."]"..
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"field[0.5,1.6;4.3,0.75;channel;"..S("Channel")..";${channel}]"..
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"button[4.8,1.6;1.5,0.75;set_channel;"..S("Set").."]"..
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"label[7.0,0.5;"..S("Receive").."]"..
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"image_button[7.0,0.75;1,0.6;pipeworks_button_" .. cr_state .. ".png;cr" .. (can_receive and 0 or 1) .. ";;;false;pipeworks_button_interm.png]"..
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"button_exit[6.3,1.6;2,0.75;close;"..S("Close").."]"..
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"label[0.5,2.7;"..itext.."]")
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local help_text = S("Channels are public by default").."\n"..
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S("Use <player>:<channel> for fully private channels").."\n"..
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S("Use <player>\\;<channel> for private receivers")
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local size = has_digilines and "8,5.9" or "8,4.4"
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local formspec = "formspec_version[2]size["..size.."]"..
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pipeworks.fs_helpers.get_prepends(size)..
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"image[0.5,0.3;1,1;pipeworks_teleport_tube_inv.png]"..
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"label[1.75,0.8;"..S("Teleporting Tube").."]"..
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"field[0.5,1.7;5,0.8;channel;"..S("Channel")..";${channel}]"..
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"button_exit[5.5,1.7;2,0.8;save;"..S("Save").."]"..
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"label[6.5,0.6;"..S("Receive").."]"..
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"label[0.5,2.8;"..help_text.."]"
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if has_digilines then
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formspec = formspec..
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"field[0.5,4.6;5,0.8;digiline_channel;"..S("Digiline Channel")..";${digiline_channel}]"..
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"button_exit[5.5,4.6;2,0.8;save;"..S("Save").."]"
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end
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local function update_meta(meta)
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local channel = meta:get_string("channel")
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local cr = meta:get_int("can_receive") == 1
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if channel == "" then
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meta:set_string("infotext", S("Unconfigured Teleportation Tube"))
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else
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local desc = cr and "sending and receiving" or "sending"
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meta:set_string("infotext", S("Teleportation Tube @1 on '@2'", desc, channel))
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end
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local state = cr and "on" or "off"
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meta:set_string("formspec", formspec..
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"image_button[6.4,0.8;1,0.6;pipeworks_button_"..state..
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".png;cr_"..state..";;;false;pipeworks_button_interm.png]")
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end
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local function update_tube(pos, channel, cr, player_name)
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local meta = minetest.get_meta(pos)
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if meta:get_string("channel") == channel and meta:get_int("can_receive") == cr then
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return
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end
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if channel == "" then
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meta:set_string("channel", "")
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meta:set_int("can_receive", cr)
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remove_tube(pos)
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return
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end
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local name, mode = channel:match("^([^:;]+)([:;])")
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if name and mode and name ~= player_name then
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if mode == ":" then
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minetest.chat_send_player(player_name,
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S("Sorry, channel '@1' is reserved for exclusive use by @2", channel, name))
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return
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elseif mode == ";" and cr ~= 0 then
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minetest.chat_send_player(player_name,
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S("Sorry, receiving from channel '@1' is reserved for @2", channel, name))
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return
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end
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end
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meta:set_string("channel", channel)
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meta:set_int("can_receive", cr)
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set_tube(pos, channel, cr)
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end
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local function receive_fields(pos, _, fields, sender)
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if not fields.channel or not pipeworks.may_configure(pos, sender) then
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return
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end
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local meta = minetest.get_meta(pos)
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local channel = fields.channel:trim()
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local cr = meta:get_int("can_receive")
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if fields.cr_on then
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cr = 0
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elseif fields.cr_off then
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cr = 1
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end
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if has_digilines and fields.digiline_channel then
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meta:set_string("digiline_channel", fields.digiline_channel)
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end
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update_tube(pos, channel, cr, sender:get_player_name())
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update_meta(meta)
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end
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local function can_go(pos, node, velocity, stack)
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velocity.x = 0
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velocity.y = 0
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velocity.z = 0
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local channel = minetest.get_meta(pos):get_string("channel")
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if channel == "" then
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return {}
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end
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local receivers = get_receivers(pos, channel)
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if #receivers == 0 then
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return {}
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end
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local target = receivers[math.random(1, #receivers)]
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pos.x = target.x
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pos.y = target.y
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pos.z = target.z
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return pipeworks.meseadjlist
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end
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local function repair_tube(pos, node)
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minetest.swap_node(pos, {name = node.name, param2 = node.param2})
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pipeworks.scan_for_tube_objects(pos)
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local meta = minetest.get_meta(pos)
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local channel = meta:get_string("channel")
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if channel ~= "" then
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set_tube(pos, channel, meta:get_int("can_receive"))
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end
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update_meta(meta)
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end
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local function digiline_action(pos, _, channel, msg)
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local meta = minetest.get_meta(pos)
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if channel ~= meta:get_string("digiline_channel") or type(msg) ~= "string" then
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return
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end
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local name = meta:get_string("owner")
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local cr = meta:get_int("can_receive")
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update_tube(pos, msg, cr, name)
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update_meta(meta)
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end
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local def = {
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tube = {
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can_go = can_go,
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on_repair = repair_tube,
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},
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on_construct = function(pos)
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local meta = minetest.get_meta(pos)
|
||||
meta:set_int("can_receive", 1) -- Enabled by default
|
||||
update_meta(meta)
|
||||
end,
|
||||
on_receive_fields = receive_fields,
|
||||
on_destruct = remove_tube,
|
||||
}
|
||||
|
||||
if has_digilines then
|
||||
def.after_place_node = function(pos, placer)
|
||||
-- Set owner for digilines
|
||||
minetest.get_meta(pos):set_string("owner", placer:get_player_name())
|
||||
pipeworks.after_place(pos)
|
||||
end
|
||||
def.digiline = {
|
||||
receptor = {
|
||||
rules = pipeworks.digilines_rules,
|
||||
},
|
||||
effector = {
|
||||
rules = pipeworks.digilines_rules,
|
||||
action = digiline_action,
|
||||
}
|
||||
}
|
||||
end
|
||||
|
||||
pipeworks.register_tube("pipeworks:teleport_tube", {
|
||||
@@ -210,120 +308,14 @@ pipeworks.register_tube("pipeworks:teleport_tube", {
|
||||
plain = { "pipeworks_teleport_tube_plain.png" },
|
||||
ends = { "pipeworks_teleport_tube_end.png" },
|
||||
short = "pipeworks_teleport_tube_short.png",
|
||||
node_def = {
|
||||
is_teleport_tube = true,
|
||||
tube = {
|
||||
can_go = function(pos,node,velocity,stack)
|
||||
velocity.x = 0
|
||||
velocity.y = 0
|
||||
velocity.z = 0
|
||||
|
||||
local channel = minetest.get_meta(pos):get_string("channel")
|
||||
if channel == "" then return {} end
|
||||
|
||||
local target = get_receivers(pos, channel)
|
||||
if target[1] == nil then return {} end
|
||||
|
||||
local d = math.random(1,#target)
|
||||
pos.x = target[d].x
|
||||
pos.y = target[d].y
|
||||
pos.z = target[d].z
|
||||
return pipeworks.meseadjlist
|
||||
end,
|
||||
on_repair = function(pos, node)
|
||||
local meta = minetest.get_meta(pos)
|
||||
local channel = meta:get_string("channel")
|
||||
minetest.swap_node(pos, { name = node.name, param2 = node.param2 })
|
||||
pipeworks.scan_for_tube_objects(pos)
|
||||
if channel ~= "" then
|
||||
local can_receive = meta:get_int("can_receive")
|
||||
set_tube(pos, channel, can_receive)
|
||||
local cr_description = (can_receive == 1) and "sending and receiving" or "sending"
|
||||
meta:set_string("infotext", S("Teleportation Tube @1 on '@2'", cr_description, channel))
|
||||
end
|
||||
end
|
||||
},
|
||||
on_construct = function(pos)
|
||||
local meta = minetest.get_meta(pos)
|
||||
update_meta(meta, true)
|
||||
meta:set_string("infotext", S("Unconfigured Teleportation Tube"))
|
||||
end,
|
||||
on_receive_fields = function(pos,formname,fields,sender)
|
||||
if not fields.channel -- ignore escaping or clientside manipulation of the form
|
||||
or (fields.quit and not fields.key_enter_field)
|
||||
or not pipeworks.may_configure(pos, sender) then
|
||||
return
|
||||
end
|
||||
local new_channel = tostring(fields.channel):trim()
|
||||
|
||||
local meta = minetest.get_meta(pos)
|
||||
local can_receive = meta:get_int("can_receive")
|
||||
|
||||
-- check for private channels each time before actually changing anything
|
||||
-- to not even allow switching between can_receive states of private channels
|
||||
if new_channel ~= "" then
|
||||
local sender_name = sender:get_player_name()
|
||||
local name, mode = new_channel:match("^([^:;]+)([:;])")
|
||||
if name and mode and name ~= sender_name then
|
||||
--channels starting with '[name]:' can only be used by the named player
|
||||
if mode == ":" then
|
||||
minetest.chat_send_player(sender_name, S("Sorry, channel '@1' is reserved for exclusive use by @2",
|
||||
new_channel, name))
|
||||
return
|
||||
|
||||
--channels starting with '[name];' can be used by other players, but cannot be received from
|
||||
elseif mode == ";" and (fields.cr1 or (can_receive ~= 0 and not fields.cr0)) then
|
||||
minetest.chat_send_player(sender_name, S("Sorry, receiving from channel '@1' is reserved for @2",
|
||||
new_channel, name))
|
||||
return
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
local dirty = false
|
||||
|
||||
-- was the channel changed?
|
||||
local channel = meta:get_string("channel")
|
||||
if new_channel ~= channel and (fields.key_enter_field == "channel" or fields.set_channel) then
|
||||
channel = new_channel
|
||||
meta:set_string("channel", channel)
|
||||
dirty = true
|
||||
end
|
||||
|
||||
-- test if a can_receive button was pressed
|
||||
if fields.cr0 and can_receive ~= 0 then
|
||||
can_receive = 0
|
||||
update_meta(meta, false)
|
||||
dirty = true
|
||||
elseif fields.cr1 and can_receive ~= 1 then
|
||||
can_receive = 1
|
||||
update_meta(meta, true)
|
||||
dirty = true
|
||||
end
|
||||
|
||||
-- save if we changed something, handle the empty channel while we're at it
|
||||
if dirty then
|
||||
if channel ~= "" then
|
||||
set_tube(pos, channel, can_receive)
|
||||
local cr_description = (can_receive == 1) and "sending and receiving" or "sending"
|
||||
meta:set_string("infotext", S("Teleportation Tube @1 on '@2'", cr_description, channel))
|
||||
else
|
||||
-- remove empty channel tubes, to not have to search through them
|
||||
remove_tube(pos)
|
||||
meta:set_string("infotext", S("Unconfigured Teleportation Tube"))
|
||||
end
|
||||
end
|
||||
end,
|
||||
on_destruct = function(pos)
|
||||
remove_tube(pos)
|
||||
end
|
||||
},
|
||||
node_def = def,
|
||||
})
|
||||
|
||||
if minetest.get_modpath("mesecons_mvps") ~= nil then
|
||||
if minetest.get_modpath("mesecons_mvps") then
|
||||
-- Update tubes when moved by pistons
|
||||
mesecon.register_on_mvps_move(function(moved_nodes)
|
||||
for _, n in ipairs(moved_nodes) do
|
||||
if string.find(n.node.name, "pipeworks:teleport_tube") ~= nil then
|
||||
if n.node.name:find("pipeworks:teleport_tube") then
|
||||
local meta = minetest.get_meta(n.pos)
|
||||
set_tube(n.pos, meta:get_string("channel"), meta:get_int("can_receive"))
|
||||
end
|
||||
@@ -333,11 +325,21 @@ end
|
||||
|
||||
-- Expose teleport tube database API for other mods
|
||||
pipeworks.tptube = {
|
||||
hash = hash,
|
||||
version = tube_db_version,
|
||||
hash = hash_pos,
|
||||
get_db = function() return tube_db end,
|
||||
save_tube_db = save_tube_db,
|
||||
save_tube_db_entry = save_tube_db_entry,
|
||||
get_db = function() return tp_tube_db or read_tube_db() end,
|
||||
set_tube = set_tube,
|
||||
update_meta = update_meta,
|
||||
tp_tube_db_version = tp_tube_db_version
|
||||
save_tube = save_tube,
|
||||
update_tube = update_tube,
|
||||
update_meta = function(meta, cr)
|
||||
-- Legacy behaviour
|
||||
if cr ~= nil then
|
||||
meta:set_int("can_receive", cr and 1 or 0)
|
||||
end
|
||||
update_meta(meta)
|
||||
end,
|
||||
}
|
||||
|
||||
-- Load the database
|
||||
read_tube_db()
|
||||
|
||||
Reference in New Issue
Block a user