copy all standard Dreambuilder mods in from the old subgame

(exactly as last supplied there, updates to these mods will follow later)

1 files changed, 242 insertions, 0 deletions

diff --git a/pipeworks/teleport_tube.lua b/pipeworks/teleport_tube.lua
new file mode 100644
index 0000000..3a870f5
--- /dev/null
+++ b/pipeworks/teleport_tube.lua
@@ -0,0 +1,242 @@
+local filename=minetest.get_worldpath() .. "/teleport_tubes"
+
+local tp_tube_db = nil -- nil forces a read
+local tp_tube_db_version = 2.0
+
+local function hash(pos)
+	return string.format("%d", minetest.hash_node_position(pos))
+end
+
+local function save_tube_db()
+	local file, err = io.open(filename, "w")
+	if file then
+		tp_tube_db.version = tp_tube_db_version
+		file:write(minetest.serialize(tp_tube_db))
+		tp_tube_db.version = nil
+		io.close(file)
+	else
+		error(err)
+	end
+end
+
+local function migrate_tube_db()
+		local tmp_db = {}
+		tp_tube_db.version = nil
+		for key, val in pairs(tp_tube_db) do
+			if(val.channel ~= "") then -- skip unconfigured tubes
+				tmp_db[hash(val)] = val
+			end
+		end
+		tp_tube_db = tmp_db
+		save_tube_db()
+end
+
+local function read_tube_db()
+	local file = io.open(filename, "r")
+	if file ~= nil then
+		local file_content = file:read("*all")
+		io.close(file)
+
+		if file_content and file_content ~= "" then
+			tp_tube_db = minetest.deserialize(file_content)
+			if(not tp_tube_db.version or tonumber(tp_tube_db.version) < tp_tube_db_version) then
+				migrate_tube_db()
+			end
+			tp_tube_db.version = nil -- we add it back when saving
+			return tp_tube_db -- we read sucessfully
+		end
+	end
+	tp_tube_db = {}
+	return tp_tube_db
+end
+
+-- updates or adds a tube
+local function set_tube(pos, channel, can_receive)
+	local tubes = tp_tube_db or read_tube_db()
+	local hash = hash(pos)
+	local tube = tubes[hash]
+	if tube then
+		tube.channel = channel
+		tube.cr = can_receive
+		save_tube_db()
+		return
+	end
+
+	-- we haven't found any tp tube to update, so lets add it
+	tp_tube_db[hash] = {x=pos.x,y=pos.y,z=pos.z,channel=channel,cr=can_receive}
+	save_tube_db()
+end
+
+local function remove_tube(pos)
+	local tubes = tp_tube_db or read_tube_db()
+	tubes[hash(pos)] = nil
+	save_tube_db()
+end
+
+local function read_node_with_vm(pos)
+	local vm = VoxelManip()
+	local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
+	local data = vm:get_data()
+	local area = VoxelArea:new({MinEdge = MinEdge, MaxEdge = MaxEdge})
+	return minetest.get_name_from_content_id(data[area:index(pos.x, pos.y, pos.z)])
+end
+
+local function get_receivers(pos, channel)
+	local tubes = tp_tube_db or read_tube_db()
+	local receivers = {}
+	local dirty = false
+	for key, val in pairs(tubes) do
+		-- skip all non-receivers and the tube that it came from as early as possible, as this is called often
+		if (val.cr == 1 and val.channel == channel and (val.x ~= pos.x or val.y ~= pos.y or val.z ~= pos.z)) then
+			local is_loaded = (minetest.get_node_or_nil(val) ~= nil)
+			local node_name = is_loaded and minetest.get_node(pos).name or read_node_with_vm(val)
+
+			if minetest.registered_nodes[node_name] and minetest.registered_nodes[node_name].is_teleport_tube then
+				table.insert(receivers, val)
+			else
+				tp_tube_db[key] = nil
+				dirty = true
+			end
+		end
+	end
+	if dirty then
+		save_tube_db()
+	end
+	return receivers
+end
+
+local function update_meta(meta, can_receive)
+	meta:set_int("can_receive", can_receive and 1 or 0)
+	local cr_state = can_receive and "on" or "off"
+	meta:set_string("formspec","size[8.6,2.2]"..
+			"field[0.6,0.6;7,1;channel;Channel:;${channel}]"..
+			"label[7.3,0;Receive]"..
+			"image_button[7.3,0.3;1,1;pipeworks_button_" .. cr_state .. ".png;cr" .. (can_receive and 0 or 1) .. ";;;false;pipeworks_button_interm.png]"..
+			"image[0.3,1.3;1,1;pipeworks_teleport_tube_inv.png]"..
+			"label[1.6,1.2;channels are public by default]" ..
+			"label[1.6,1.5;use <player>:<channel> for fully private channels]" ..
+			"label[1.6,1.8;use <player>\\;<channel> for private receivers]" ..
+			default.gui_bg..
+			default.gui_bg_img)
+end
+
+pipeworks.register_tube("pipeworks:teleport_tube", {
+	description = "Teleporting Pneumatic Tube Segment",
+	inventory_image = "pipeworks_teleport_tube_inv.png",
+	noctr = { "pipeworks_teleport_tube_noctr.png" },
+	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_construct = function(pos)
+			local meta = minetest.get_meta(pos)
+			update_meta(meta, true)
+			meta:set_string("infotext", "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 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, "Sorry, channel '"..new_channel.."' is reserved for exclusive use by "..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, "Sorry, receiving from channel '"..new_channel.."' is reserved for "..name)
+						return
+					end
+				end
+			end
+
+			local dirty = false
+
+			-- was the channel changed?
+			local channel = meta:get_string("channel")
+			if new_channel ~= 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", string.format("Teleportation Tube %s on '%s'", cr_description, channel))
+				else
+					-- remove empty channel tubes, to not have to search through them
+					remove_tube(pos)
+					meta:set_string("infotext", "unconfigured Teleportation Tube")
+				end
+			end
+		end,
+		on_destruct = function(pos)
+			remove_tube(pos)
+		end
+	},
+})
+minetest.register_craft( {
+	output = "pipeworks:teleport_tube_1 2",
+	recipe = {
+	        { "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
+	        { "default:desert_stone", "default:mese", "default:desert_stone" },
+	        { "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
+	},
+})
+
+if minetest.get_modpath("mesecons_mvps") ~= nil then
+	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
+				local meta = minetest.get_meta(n.pos)
+				set_tube(n.pos, meta:get_string("channel"), meta:get_int("can_receive"))
+			end
+		end
+	end)
+end