Minecraft Inventory Slot Numbers

A GUI is an in-game screen with which has interactive objects. It consists of text fields, images, buttons, slots etc.

GUI Properties

This is looping through every slot in the inventory and if it's null or the item is an air block (I'm not sure if it returns null or an air block) then add the slot number to the list. You can modify it.

There are 5 properties:

  • Anyone know the ID of the Helmet slot in the normal Inventory?
  • The inventory is filled with air even though there is nothing there, That's why an empty inventory counts as 36 because of the 36 air blocks in each slot. However, there is not an easier way than to just loop through each slot.
  • GUI Width: The width of your GUI (in pixels)
  • GUI Height: The height of your GUI (in pixels)
  • GUI Type: 2 options: With Slots or WIthout Slots. If you select With Slots, you will be able to create slots (Input and output slots) and inventories.
  • Render background layer: Check this box if you want a backgound (Grey-White color). If not, uncheck the box.
  • Bind GUI to block: If you want to make a Tile Entity, you have to choose the block with the option for inventory activated.
Minecraft player inventory slot numbers

GUI Components

There are 6 components:

  • Buttons: The buttons are objects with events. This event works like the normal events.
  • Images: Just images from your PC.
  • Text Label: Plain text that supports MCreator's default tags for some variables (both in-game and global MCreator's variables). The text can also be colored.
  • Text Input: A section where the player can write any text and can be detected and used to execute events, example uses are like a custom command block or search function.
  • Input Slot: Description below
  • Output Slot: Description below

Slots and Inventory Components

To create a slot (input or output) you must first enable inventory, with the Inventory Option:

Slots Options

It has 2 buttons: Input and Output Slot:

  • Input Slot: Choose it if you want to put items in there.
  • Output Slot: Choose it if you want to put items with events, not by hand.

Input slot

  • Belongs to: Select the inventory that you created earlier.
  • Slot ID: It is the ID of this specific slot. It's necessary to don't have the same number more than one time.
  • Custom Color: If you want to put a color in the slot, select the color. If not, skip clicking this button.
  • Limit stack input: If you want to limit the type of item that the slot accepts (Like a redstone dust or a torch), select the desired item. If not, just ignore this option.
  • Add Event: It's just self-explanatory.
Numbers

Finally, just move the slot where you want it to be

Output Slot

  • Belongs to: Select the inventory that you created earlier.
  • Slot ID: It is the ID of this specific slot. It's necessary to don't have the same number more than one time.
  • Custom Color: If you want to put a color in the slot, select the color. If not, skip clicking this button.
  • Add Event: It's just self-explanatory.

Putting items in Output Slots

  1. Add an Event (In blocks, items, guns, slots, etc.)
  2. Select: Place items in GUI slot
  3. Write the ID of your Output slot (visible on the GUI, it's a number like 02)
  4. Write the name of the Inventory of your Output slot
  5. Select the item that you want to put in and select the amount.

Edit Options

These buttons will help you make a GUI:

  • Move Component: Moves the components you select.
  • Remove Component: Removes selected component.
  • Remove Inventory: Removes selected inventory.
  • Snap components on the grid: Toggles grid used to easily align components.

Minecraft displays the player inventory differently, according to how the window was opened. Ranges of slot indices vary in meaning between different “windows”. The Open Window packet indicates which window is being opened according to:

  • 2Chest
Window Type Description
minecraft:container Fallback for unknown types; also used for Ender chests. Behaves the same as minecraft:chest.
minecraft:chestChest, large chest, or minecart with chest
minecraft:crafting_tableCrafting table
minecraft:furnaceFurnace
minecraft:dispenserDispenser
minecraft:enchanting_tableEnchantment table
minecraft:brewing_standBrewing stand
minecraft:villagerVillager
minecraft:beaconBeacon
minecraft:anvilAnvil
minecraft:hopperHopper or minecart with hopper
minecraft:dropperDropper
minecraft:shulker_boxShulker box
EntityHorseHorse, donkey, mule or Llama

The slot number is calculated starting at 0, counting up through the window's unique slots, and then counting through the players inventory.

For all windows, the slot in the upper-left corner of the player's inventory is slot n where n is the number of unique slots, and slot number -999 is always used for clicking outside the window.

The number of unique slots in the window is sent in the Open Window (Play, 0x2d, clientbound) packet for all storage windows (e.g. Chest, Dropper). For non-storage windows (the items get dropped when the window is closed, e.g. Workbench, Anvil), the received number of unique slots is always 0, but it can be looked up by the client from the window type.

The default inventory window, which is never explicitly opened by the server, has 10 unique slots.

Rectangular regions are always indexed starting with the upper-left corner and scanning across rows. If a window has a crafting region, the output slot is always slot 0 followed immediately by the input region.

Each window type is described in the following sections. All slot index ranges are inclusive and reflect the indices observed in the Minecraft protocol.

For the window properties (additional data in each window, e.g. smelting progress or enchantments), refer to the table in the Window Property packet.

Using -1 as slot index and as window id will set the cursor item (the stack dragged with the mouse).

Player Inventory

Inventory slots

This is the inventory window that the player can always open, typically by pressing E since Beta 1.4. Before, you had to press I.

Slot range Description
0 crafting output
1–4 2×2 crafting input (1 + x + 2 * y)
5–8 armor (head, chest, legs, feet)
9–35 main inventory
36–44 hotbar
45 Offhand slot

Note that this is different from inventory items stored in a player.dat file. This may help: https://gist.github.com/459a1691c3dd751db160

Chest

Chest slots

This is the window that is opened when the player right-clicks on a single chest block.

Slot range Description
0–26 chest
27–53 main inventory
54–62 hotbar
Double/large chest slots

Large chest

This is the window that is opened when the player right-clicks on a double chest block (two adjacent chest blocks).

Slot range Description
0–53 chest
54–80 main inventory
81–89 hotbar

It is possible to receive different 'Number Of Slots' parameters than those two. In vanilla, using /setblock four times around a chest and then opening the middle chest will open a window with 5*27 chest slots. Some custom servers will send chest inventories with other sizes, usually ranging from 1 row to 6 rows. These may be used for custom GUIs. It is thus important to correctly use the 'Number Of Slots' parameter in the open window packet to determine the number of rows in the chest, rather than hardcoding what constitutes a regular chest or a large chest.

Crafting table

Crafting table slots

This is the window that is opened when the player right-clicks on a workbench.

Slot range Description
0 crafting output
1–9 3×3 crafting input (1 + x + 3 * y)
10–36 main inventory
37–45 hotbar

If the 'Number Of Slots' parameter is not set to 0, the opened window will behave like a container window.

Furnace

Furnace slots

The window that appears when a furnace is right-clicked.

Slot range Description
0 ingredient
1 fuel
2 output
3–29 main inventory
30–38 hotbar

If the 'Number Of Slots' parameter is inferior to 3, placing an item in a slot may crash the client.

Dispenser

Dispenser/dropper slots

The inventory that appears when a dispenser or dropper is opened.

Slot range Description
0–8 3×3 dispenser contents (x + 3 * y)
9–35 main inventory
36-44 hotbar

If the 'Number Of Slots' parameter is inferior to 9, placing an item in a slot may crash the client.

Enchantment Table

Enchantment table slots

The inventory of an enchantment table. The enchant buttons trigger a Enchant item packet.

Slot range Description
0 item to enchant
1 lapis lazuli slot
2–28 main inventory
29–37 hotbar

Brewing stand

Brewing stand slots

The GUI that appears when a brewing stand is opened.

Slot range Description
0-2 bottles/potions
3 potion ingredient
4 blaze powder
5-31 main inventory
32-40 hotbar

Villager trading

Villeger slots

Minecraft Inventory Slot Numbers

The GUI that appears when a villager is right-clicked. Note that if the villager only requires one item, you can put it in either (or both) slots.

Slot range Description
0-1 input items
2 result
3–29 main inventory
30–38 hotbar

Beacon

Beacon slots

The window that appears when a beacon is right-clicked.

Slot range Description
0 payment item
1–27 main inventory
28–36 hotbar

Anvil

Anvil slots
Slot range Description
0 first item
1 second item
2 result
3–29 main inventory
30–38 hotbar

Hopper

Minecraft inventory slot numbers for pc
Hopper slots

The window that appears when a hopper or hopper minecart is opened.

Slot range Description
0-4 hopper slots
5–31 main inventory
32–40 hotbar

Shulker box

Shulker box slots

This is the window that is opened when the player right-clicks on a shulker box chest.

Slot range Description
0–26 box slots
27–53 main inventory
54–62 hotbar

Llama

Llama slots
Minecraft Inventory Slot Numbers

The inventory that appears when a tamed llama is right-clicked and has a chest, or when the player's inventory is opened while riding a tamed llama. Depending on the value of the strength field, the number of chest rows may vary (max is 5, so 15 slots).

There still is a saddle slot, even though it cannot be used and is invisible.

Slot positions within the llama inventory vary - slot 2 may be at (1,0) or at (0,1) depending on the number of columns.

Slot range Description
0 saddle
1 carpet
2-(2+3*Strength) llama inventory
(2+3*Strength)+1-(2+3*Strength)+27 player inventory
(2+3*Strength)+28-(2+3*Strength)+35 hotbar
  • Unchested llama

  • Llama with strength 1

  • Llama with strength 2

  • Llama with strength 3

  • Llama with strength 4

  • Llama with strength 5

Horse

Horse slots

The window for when a tamed horse is right-clicked or the player's inventory is opened while riding a horse.

Slot range Description
0 saddle
1 armor
2–28 main inventory
29–37 hotbar
  • Horse slots

  • Skeleton horse slots

  • Zombie horse slots

Donkey

Minecraft Inventory Slot Numbers

Donkey slots

The inventory that appears when a tamed donkey (or mule?) is right-clicked, or when the player's inventory is opened while riding a tamed donkey or mule.

There still is an armor slot, even though it cannot be used and is invisible.

Minecraft Inventory Slot Numbers For Pc

Slot range Description
0 saddle
1 armor
2–16 donkey inventory
17–43 (2-28 if unchested) player inventory
44–52 (29-37 if unchested) hotbar
  • Unchested donkey

  • Chested donkey

  • Unchested mule

  • Chested mule

Minecraft Player Inventory Slot Numbers

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