Amulets/runes' inventory created with load and save features

- Added texture for the inventory's background to be customized later, adding
   copies of our textures in each slot
 - Added unified_inventory as a dependency for runes
 - Added inventory for runes and amulets and its handler

mods/runes/api.lua

@@ -205,8 +205,91 @@ runes.functions.register_amulet = function(name, desc, maxcount, manadiff)
 	minetest.register_craftitem("runes:" .. name .. "_amulet", {
 		description = desc,
 		inventory_image = "runes_" .. name .. "_amulet.png",
-		groups = {amulet = 1},
+		groups = {amulet = 1, rune = 1},
 		stack_max = maxcount,
 	})
 	runes.datas.amulets[name] = manadiff
 end
+
+-- Inventory
+
+unified_inventory.register_button("runes", {
+	type = "image",
+	image = "runes_heal_major.png",
+})
+unified_inventory.register_page("runes", {
+	get_formspec = function(player)
+		local name = player:get_player_name()
+		local formspec = "background[0,0.2;8,4;runes_rune_inventory.png]"..
+			"background[0,4.5;8,4;ui_wooden_chest_inventory.png]"..
+			"size[8,10]"..
+			"list[detached:"..name.."_runes;runes;0,0.2;8,4;]"
+		return {formspec=formspec}
+	end,
+})
+
+runes.functions.register_detached_inventory = function(player)
+	local name = player:get_player_name()
+	local player_inv = player:get_inventory()
+	local datafile = io.open(minetest.get_worldpath().."/runes/"..name.."_rune.inv", "r")
+	local rune_inv_data = {}
+	if datafile then
+		local line = datafile:read()
+		if line then
+			rune_inv_data = minetest.deserialize(line)
+		end
+		io.close(datafile)
+	end
+	local rune_inv = minetest.create_detached_inventory(name.."_runes",{
+		on_put = function(inv, listname, index, stack, player)
+			player:get_inventory():set_stack(listname, index, stack)
+			armor:set_player_armor(player)
+			armor:update_inventory(player)
+		end,
+		on_take = function(inv, listname, index, stack, player)
+			player:get_inventory():set_stack(listname, index, nil)
+			armor:set_player_armor(player)
+			armor:update_inventory(player)
+		end,
+		allow_put = function(inv, listname, index, stack, player)
+			if minetest.get_item_group(stack:get_name(), "rune") > 0 then
+				return stack:get_count()
+			end
+			return 0
+		end,
+		allow_take = function(inv, listname, index, stack, player)
+			return stack:get_count()
+		end,
+		allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
+			return count
+		end,
+	})
+	rune_inv:set_size("runes", 8*4)
+	rune_inv:set_list("runes",rune_inv_data)
+	minetest.log("action","[runes] Rune inventory loaded for player " .. name)
+end
+
+minetest.register_on_joinplayer(runes.functions.register_detached_inventory)
+
+runes.functions.save_detached_inventory = function(player)
+	local name = player:get_player_name()
+	local player_inv = player:get_inventory()
+	local datafile = io.open(minetest.get_worldpath().."/runes/"..name.."_rune.inv", "w")
+	local rune_inv_data = minetest.get_inventory({type = "detached", name=name.."_runes"})
+	local translated_rune_data = {}
+	for index, data in pairs(rune_inv_data:get_list("runes")) do
+		translated_rune_data[index] = data:get_name() .. " " .. data:get_count()
+	end
+	if datafile then
+		datafile:write(minetest.serialize(translated_rune_data))
+	end
+	io.close(datafile)
+	minetest.log("action", "[runes] Rune inventory saved for player " .. name)
+end
+
+minetest.register_on_leaveplayer(runes.functions.save_detached_inventory)
+minetest.register_on_shutdown(function()
+	for index, player in pairs(minetest.get_connected_players()) do
+		runes.functions.save_detached_inventory(player)
+	end
+end)

mods/runes/depends.txt

@@ -1,2 +1,3 @@
 default
+unified_inventory
 mana