Rename folder

src/bags.lua

@@ -0,0 +1,96 @@
+local S, fmt, msg, spawn_item = i3.get("S", "fmt", "msg", "spawn_item")
+
+local function init_backpack(player)
+	local name = player:get_player_name()
+	local data = i3.data[name]
+	local inv = player:get_inventory()
+
+	inv:set_size("main", data.bag_size and i3.BAG_SIZES[data.bag_size] or i3.INV_SIZE)
+
+	data.bag = core.create_detached_inventory(fmt("%s_backpack", name), {
+		allow_put = function(_inv, listname, _, stack)
+			local empty = _inv:get_stack(listname, 1):is_empty()
+			local item_group = minetest.get_item_group(stack:get_name(), "bag")
+
+			if empty and item_group > 0 and item_group <= #i3.BAG_SIZES then
+				return 1
+			end
+
+			msg(name, S"This is not a backpack")
+
+			return 0
+		end,
+
+		on_put = function(_, _, _, stack)
+			local stackname = stack:get_name()
+			data.bag_item = stackname
+			data.bag_size = minetest.get_item_group(stackname, "bag")
+
+			inv:set_size("main", i3.BAG_SIZES[data.bag_size])
+			i3.set_fs(player)
+		end,
+
+		on_take = function()
+			for i = i3.INV_SIZE + 1, i3.BAG_SIZES[data.bag_size] do
+				local stack = inv:get_stack("main", i)
+
+				if not stack:is_empty() then
+					spawn_item(player, stack)
+				end
+			end
+
+			data.bag_item = nil
+			data.bag_size = nil
+
+			inv:set_size("main", i3.INV_SIZE)
+			i3.set_fs(player)
+		end,
+	})
+
+	data.bag:set_size("main", 1)
+
+	if data.bag_item then
+		data.bag:set_stack("main", 1, data.bag_item)
+	end
+end
+
+local bag_recipes = {
+	small = {
+		rcp = {
+			{"", "farming:string", ""},
+			{"group:wool", "group:wool", "group:wool"},
+			{"group:wool", "group:wool", "group:wool"},
+		},
+		size = 1,
+	},
+	medium = {
+		rcp = {
+			{"farming:string", "i3:bag_small", "farming:string"},
+			{"farming:string", "i3:bag_small", "farming:string"},
+		},
+		size = 2,
+	},
+	large = {
+		rcp = {
+			{"farming:string", "i3:bag_medium", "farming:string"},
+			{"farming:string", "i3:bag_medium", "farming:string"},
+		},
+		size = 3,
+	},
+}
+
+for size, item in pairs(bag_recipes) do
+	local bagname = fmt("i3:bag_%s", size)
+
+	core.register_craftitem(bagname, {
+		description = fmt("%s Backpack", size:gsub("^%l", string.upper)),
+		inventory_image = fmt("i3_bag_%s.png", size),
+		stack_max = 1,
+		groups = {bag = item.size}
+	})
+
+	core.register_craft {output = bagname, recipe = item.rcp}
+	core.register_craft {type = "fuel", recipe = bagname, burntime = 3}
+end
+
+return init_backpack