Minecraft:Entity format

Template:Exclusive Entities are stored in the entities folder of respective dimension folders. It is stored like Minecraft Minecraft:Anvil format files, which are named in the form r.x.z.mca.

Directory structure

• Template:File
  • Template:File: Contains entity files for the Minecraft:Overworld. These used to be part of region.
    • Template:File
  • Template:File: Contains region files of the Minecraft:Nether.
    • Template:File
      • Template:File
  • Template:File: Contains region files of Minecraft:the End.
    • Template:File
      • Template:File

Entity inheritance

Most entities share similar functionalities with each other from abstract classes or interfaces. For instance, horses (and their undead variants), donkeys, camels, mules, and llamas all inherit from Abstract Horse, which share some of its horse-like behaviors and properties to their inheritance. This inheritance can be seen under the game's code for all of its entities.

An entity that inherits from an abstract class or other entity share their implementation and functionalities with each other, while an entity that inherits from an interface may not necessarily share its functionalities, rather implement the required behaviors from the interface itself. As such, an entity's implementation of the interface may be different from other entities. Any entity may implement multiple interfaces, while only inheriting a single abstract class or other entity.

Abstract classes

<section begin="mob-class"/>Template:Blist<section end="mob-class"/>

<section begin="inheritance-projectile"/>Template:Blist<section end="inheritance-projectile"/>

NBT structure

Every Minecraft:entity is an unnamed Template:Nbt compound contained in the Entities list of a chunk file. The sole exception is the Player entity, stored in level.dat, or in <player>.dat files on servers.

• Template:Nbt The root tag.
  • Template:Nbt: Version of the chunk data.
  • Template:Nbt: Position of this chunk.
    • Template:Nbt: X coordinate.
    • Template:Nbt: Z coordinate.
  • Template:Nbt: All the entities. Each compound in this list defines an entity in this chunk.
    • Template:Nbt: An entity. See #Entity format below.

Entity format

All entities are with the following structure:

• Template:Nbt Entity data

Chunk format/Entity

Mobs

Mobs are a subclass of Living Entity with additional tags to store their health, attacking/damaged state, potion effects, and more depending on the mob. Players and Minecraft:armor stands are a subclass of living entities.

• Template:Nbt Mob data
  • Template:Nbt inherit/entity

Chunk format/Mob

Mob-specific data

Many mobs additionally have individual data.

Projectiles

Projectiles are a subclass of Entity.

Items and XP Orbs

Items and XPOrbs are a subclass of Entity.

Vehicles

Vehicles are subclasses of Entity.

Dynamic tiles

Dynamic tiles are a subclass of Entity and are used to simulate realistically moving blocks.

Display

Display entities are subclasses of Entity.

Other

Other entity types that are a subclass of Entity but do not fit into any of the above categories.