add set and go mine

api.lua

@@ -39,6 +39,28 @@ local function load_home()
 end
 load_home()
 
+
+-- load_mine
+local function load_mine()
+	local input = io.open(unified_inventory.mine_filename, "r")
+	if input then
+		while true do
+			local x = input:read("*n")
+			if x == nil then
+				break
+			end
+			local y = input:read("*n")
+			local z = input:read("*n")
+			local name = input:read("*l")
+			unified_inventory.minepos[name:sub(2)] = {x = x, y = y, z = z}
+		end
+		io.close(input)
+		else
+		unified_inventory.minepos = {}
+	end
+end
+load_mine() 
+
 function unified_inventory.set_home(player, pos)
 	local player_name = player:get_player_name()
 	unified_inventory.home_pos[player_name] = pos
@@ -62,6 +84,31 @@ function unified_inventory.go_home(player)
 	end
 end
 
+-- set_mine
+function unified_inventory.set_mine(player, pos)
+	local player_name=player:get_player_name()
+	unified_inventory.minepos[player_name] = pos
+	-- save the mine data from the table to the file
+	local output = io.open(unified_inventory.mine_filename, "w")
+	for k, v in pairs(unified_inventory.minepos) do
+		if v ~= nil then
+			output:write(math.floor(v.x).." "
+					..math.floor(v.y).." "
+					..math.floor(v.z).." "
+					..k.."\n")
+		end
+	end
+	io.close(output)
+end
+
+-- go_mine
+function unified_inventory.go_mine(player)
+	local pos = unified_inventory.minepos[player:get_player_name()]
+	if pos ~= nil then
+		player:setpos(pos)
+	end
+end
+
 -- register_craft
 function unified_inventory.register_craft(options)
 	if not options.output then

init.lua

@@ -24,6 +24,8 @@ unified_inventory.buttons = {}
 unified_inventory.home_pos = {}
 unified_inventory.home_filename =
 		worldpath.."/unified_inventory_home.home"
+unified_inventory.mine_filename =
+		worldpath.."/unified_inventory_mine.mine"
 		
 -- Default inventory page
 unified_inventory.default = "craft"

register.lua

@@ -56,6 +56,33 @@ unified_inventory.register_button("home_gui_go", {
 		unified_inventory.go_home(player)
 	end,
 })
+	
+unified_inventory.register_button("mine_gui_set", {
+	type = "image",
+	image = "ui_setmine.png",
+	action = function(player)
+		local player_name = player:get_player_name()
+		unified_inventory.set_mine(player, player:getpos())
+		local mine = unified_inventory.minepos[player_name]
+		if mine ~= nil then
+			minetest.sound_play("dingdong",
+					{to_player=player_name, gain = 1.0})
+			minetest.chat_send_player(player_name,
+					"Mine position set to: "
+					..minetest.pos_to_string(mine))
+		end
+	end,
+})
+
+unified_inventory.register_button("mine_gui_go", {
+	type = "image",
+	image = "ui_gomine.png",
+	action = function(player)
+		minetest.sound_play("teleport",
+				{to_player=player:get_player_name(), gain = 1.0})
+		unified_inventory.go_mine(player)
+	end,
+})
 
 unified_inventory.register_button("misc_set_day", {
 	type = "image",