Add support for telemosaic

.luacheckrc

@@ -9,6 +9,7 @@ read_globals = {
 	"core",
 	"table.copy",
 	"table.indexof",
+	"string.split",
 	"minetest",
 	"ItemStack",
 	"barter",

README.md

@@ -64,6 +64,7 @@ To make maintaining support easier, wrench only supports specific versions of mo
 - `technic` - https://github.com/mt-mods/technic OR https://github.com/minetest-mods/technic
 - `technic_chests` - https://github.com/mt-mods/technic
 - `technic_cnc` - https://github.com/mt-mods/technic
+- `telemosaic` - https://github.com/mt-mods/telemosaic
 - `vacuum` - https://github.com/mt-mods/vacuum
 - `vessels` - https://github.com/minetest/minetest_game
 - `wine` - https://codeberg.org/tenplus1/wine

init.lua

@@ -62,6 +62,7 @@ local mods = {
 	"technic",
 	"technic_chests",
 	"technic_cnc",
+	"telemosaic",
 	"vacuum",
 	"vessels",
 	"wine",

nodes/telemosaic.lua

@@ -0,0 +1,63 @@
+
+local S = wrench.translator
+
+local function get_dest_string(meta)
+	local dest = meta:get("telemosaic:dest")
+	if dest and dest:find(":") then
+		-- Old version
+		local list = string.split(dest, ':')
+		local p = {
+			x = tonumber(list[1]),
+			y = tonumber(list[2]),
+			z = tonumber(list[3])
+		}
+		if p.x and p.y and p.z then
+			return core.pos_to_string(p)
+		end
+	else
+		return dest
+	end
+end
+
+local function save_old_pos(pos)
+	core.get_meta(pos):set_string("old_pos", core.pos_to_string(pos))
+end
+
+local function after_place(pos)
+	local meta = core.get_meta(pos)
+	local old_pos = meta:get("old_pos")
+	local dest = get_dest_string(meta)
+	if not old_pos or not dest then
+		return
+	end
+	local other_meta = core.get_meta(core.string_to_pos(dest))
+	local other_dest = get_dest_string(other_meta)
+	if other_dest and old_pos == other_dest then
+		-- Update the connected telemosaic
+		other_meta:set_string("telemosaic:dest", core.pos_to_string(pos))
+	end
+	meta:set_string("old_pos", "")
+end
+
+local function description(pos, meta, node, player)
+	local suffix = node.name:match("_protected$") and "_protected" or ""
+	local name = core.registered_nodes["telemosaic:beacon_off"..suffix].description
+	local dest = get_dest_string(meta) or ""
+	return S("@1 with destination @2", name, dest)
+end
+
+local def = {
+	metas = {
+		["telemosaic:dest"] = wrench.META_TYPE_STRING,
+		channel = core.get_modpath("digilines") and wrench.META_TYPE_STRING or nil,
+		old_pos = wrench.META_TYPE_STRING,  -- Temporary value used to update connected beacons
+	},
+	description = description,
+	after_place = after_place,
+	can_pickup = save_old_pos,
+}
+
+for _,state in ipairs({"", "_disabled", "_err"}) do
+	wrench.register_node("telemosaic:beacon"..state, def)
+	wrench.register_node("telemosaic:beacon"..state.."_protected", def)
+end