Inventory

An Inventory is a set of slots where items appear, or can be placed for storage.

Stacks
Each slot in an inventory can contain multiples of the same item type; such a grouping is known as a "stack". Each item has its own maximum per-slot stack value, indicated on the item's wiki page via "Max Stack". The Max Stack for reusable weapons and tools is only 1, whereas for consumable items it is usually between 30 and 250. Individual items from a stack can be removed using the right-click button, which can be held down to continuously remove items from the stack, or the left mouse button can be used to remove the entire stack at once.

Main inventory
The player's main inventory can be viewed and modified by pressing the ESC key (default). This is where items the player has picked up will appear, and can be accessed for use or removed. Generally the term "Inventory" when used on its own refers to the main inventory.

The main inventory consists of the following slots:

Hotbar (10 slots)
The 10 hotbar slots comprise the top row of the main inventory, and are where the current useable items appear. Items placed in the hotbar can be used with a left mouse click (when the inventory is closed). You can change the selected item by either using the scroll wheel, clicking the item on the hotbar, or pressing the associated number key. Any item can be placed here; even items that are not useable can be placed here for storage. A lock at the left of the hotbar will prevent the player from accidentally clicking on a slot to select it.

Storage (30 slots)
Any item can be placed here. Items picked up will be placed here starting from the bottom-right.

Coins (4 slots)
Coins the player has picked up, or acquired via selling items, will appear in these slots. Only coins can be placed here.

Ammo (4 slots)
These slots are for storing ammunition. Ammunition can also be stored in other slots, but ammunition stored here will be used first, and ammunition items picked up will be placed here first. Only ammunition can be placed here.

Trash Can (1 slot)
The trash can slot is used for discarding unwanted items. Any item can be placed here. Once an item is placed here, it will remain there until another item is placed in the same slot (or the user quits the game). The newly placed item will then take the same slot, and the previous item will be discarded permanently.

Clothing (3 slots)
This is where helmet/shirt/pant items can be equipped. These slots are generally used for Armor. There is one slot for each part of the body. Only clothing items can be placed here.

Social (3 slots)
Vanity items can be placed here for a visual effect only. Armor and other items that normally provide functionality can also be placed in these slots, though they will have no effect other than appearance. Other than this, they function similarly to the clothing slots.

Accessories (5 slots)
Accessories can be placed here. No other item can be placed on these slots.

Storage item inventory
Storage items have 20 inventory slots where the player can find new items or store excess items.

NPC inventory
NPCs who sell items each have their own 20-slot inventory where the items available for purchase are shown. Items sold to the NPC will also appear there, but only while the inventory remains on-screen; accessing the same NPC later will not show the sold items. Items being sold by the NPC will always be placed from the top-left to the bottom-right.

Housing menu
Housing menu is a menu that allows you to place NPC Flags and thus manually appoint a house for a NPC. It is useful for example if you want your own room, but NPC moved into it.

It shows the NPC that you have and also show you a question mark that you use to see if your house is considered like a home for the NPC. You can access this menu by clicking on the little house in your inventory.

To change the housings do the following: open your inventory, click the little gray House icon which is over your armor, choose an NPC, place his NPC Flag somewhere in a room. If you want to check if the house is suitable, click the "?" mark and click a house.