Module entity 

This module contains entity-related traits and types.

Re-exports

pub use projectile::AbstractThrownPotion;

pub use projectile::EntityHitResult;

pub use projectile::Projectile;

pub use projectile::ProjectileBase;

pub use projectile::ProjectileDeflection;

pub use projectile::ProjectileEventSource;

pub use projectile::ProjectileHit;

pub use projectile::SPLASH_HORIZONTAL_REACH;

pub use projectile::SPLASH_RANGE_SQ;

pub use projectile::SPLASH_VERTICAL_REACH;

pub use projectile::ThrowableItemProjectile;

pub use projectile::ThrowableProjectile;

pub use projectile::ViewVectorHitResult;

pub use projectile::compute_margin;

pub use projectile::get_hit_result_on_view_vector;

pub use projectile::spawn_throwable_item_projectile;

Modules

ageable 🔒

Shared vanilla AgeableMob state and hooks.

ai 🔒

Vanilla-shaped mob AI foundations.

animal 🔒

Shared vanilla Animal state and hooks.

attribute

Runtime entity attribute system.

base 🔒

Common base functionality shared by all entities.

block_attached_entity 🔒

Shared Vanilla BlockAttachedEntity state and hooks.

block_effects 🔒

callback 🔒

Entity lifecycle callbacks for movement and removal tracking.

combat_rules 🔒

consume_effect

Consume-effect behaviors: one small module per vanilla ConsumeEffect subtype under net/minecraft/world/item/consume_effects.

conversion 🔒

damage

Exact damage attribution and server-owned recent damage history.

dismount_helper 🔒

Vanilla dismount location helper

entities

Concrete entity implementations.

entity 🔒

entity_manager_benchmark_support

Fixtures for benchmarking the world entity manager without a live world.

entity_selector

Shared entity predicates.

fluid_contact 🔒

Entity contact with world fluids.

generated_entities 🔒

Generated entity factory and spawn rule registrations.

identity 🔒

inside_block_effects 🔒

item_based_steering 🔒

Vanilla item-steered vehicle helpers.

item_frame 🔒

Shared item-frame entity behavior.

leash 🔒

living_base 🔒

Shared fields for all living entities.

living_entity 🔒

living_reference 🔒

manager 🔒

World-level entity ownership and lookup.

mob 🔒

Vanilla-shaped mob foundations.

mob_effect

Mob-effect behaviors: one small module per vanilla MobEffect subtype under net/minecraft/world/effect.

monster 🔒

Shared hostile-mob markers, behavior, and spawn rules.

movement_sync 🔒

Shared movement synchronization state for tracked entities.

potion_contents 🔒

Vanilla PotionContents behavior extension: the methods that need LivingEntity/World, which can’t live alongside the data in steel_registry::data_components::PotionContents.

projectile

Vanilla Projectile class hierarchy, mirrored as Rust traits + base structs.

pushing 🔒

Entity pushing, with a batched fast path that keeps vanilla’s contact order.

reference 🔒

registry 🔒

Entity registry for creating entity instances.

selector 🔒

Entity selection predicates shared by queries, after vanilla EntitySelector.

spawn 🔒

spawn_placements 🔒

Entity-type spawn placement dispatch.

storage 🔒

Proto-chunk entity storage.

synced_data 🔒

ticking 🔒

Shared vanilla entity tick helpers.

tracker 🔒

Entity tracking system for managing which players can see which entities.

Structs

AcceptedClientMovement

Final state accepted from a client-authored movement packet.

ActiveItemUseState

Vanilla active item-use state stored on LivingEntity.

BlockEffectFireSnapshot 🔒

ChunkEntityLoadResult

Entity changes produced when a chunk becomes loaded.

ConversionParams

Controls which state a converted mob inherits.

EntityAmethystStepSound

Sound parameters for vanilla amethyst step chimes.

EntityBase

Common fields and methods shared by all entities.

EntityBaseLoad

Base fields restored from persistent entity data.

EntityBaseSaveData

Shared vanilla entity save data that is not part of the movement snapshot.

EntityBaseState

Vanilla Entity movement state stored as one locked snapshot.

EntityChangeSenders

Packet sinks used by EntityTracker::send_changes.

EntityChunkCallback

Callback attached to each entity for tracking chunk/section movement.

EntityFireFreezeState

Vanilla base fire and freezing state.

EntityFluidContact

Fluid heights intersecting an entity’s current bounding box.

EntityGeneration

Opaque generation counter for one runtime construction of an entity.

EntityGroundContact

Vanilla ground-support state updated by Entity.checkSupportingBlock.

EntityLifecycleChanges

Entity lifecycle changes caused by manager membership or visibility updates.

EntityLoadRequest

Entity load request before the registry assigns a runtime ID.

EntityMoveUpdate

Section/chunk membership update caused by a committed entity move.

EntityMovement

A vanilla movement segment used by block-contact effects.

EntityMovementFlags

Vanilla collision and ground-contact flags updated by Entity.move.

EntityMovementProgress

Vanilla movement distance counters used by step, swim, and flap side effects.

EntityMovementSyncPackets

At most two movement packets are emitted for one tracked movement update: one body movement/rotation packet and one head-rotation packet.

EntityMovementSyncState

Per-entity movement sync state for tracked position and rotation.

EntityMovementSyncUpdate

Runtime values accepted by tracked entity movement sync.

EntityPositionSyncSnapshot

Runtime values needed to build a vanilla position sync packet.

EntityPositionSyncState

Per-entity position sync state shared by player and entity tracking.

EntityPushSnapshot

Saved inputs for one push contact.

EntityReference

A UUID reference that re-resolves removed entities within the same domain.

EntityRegistry

Registry for entity factories and spawn rules.

EntityRotationSyncState

Last packed rotation values known to tracking clients.

EntityTracker

World-level entity tracker.

EntityVelocitySyncState

Per-entity velocity sync state for tracked entities.

InactiveEntityCallback

Callback for entities retained outside live world membership.

InsideBlockEffectCollector

Step-scoped collector for vanilla inside-block side effects.

LivingEntityBase

Common runtime fields shared by all living entities.

LivingEntityRef

A living entity capability tied to the same shared allocation used for attribution.

LivingRotationState

Vanilla living-entity body/head rotation state.

LivingSwingState

Arm-swing animation state stored on a living entity.

LivingTravelInput

Movement input stored on vanilla LivingEntity.

MobEffectInstance

Runtime mob-effect state.

NullEntityCallback

Null callback for entities not yet in the world.

PackedEntityRotation

Packed body rotation used by entity movement packets.

PendingWorldChangeToken

Runtime token for an in-flight world change request.

PlayerEntityCallback

Callback for players.

ServerEntityMovementSyncState

Per-tracked-entity movement state owned by the entity tracker.

ServerEntityMovementSyncUpdate

Runtime values accepted by vanilla ServerEntity.sendChanges movement sync.

SwimmingEnvironment 🔒

WorldEntityManager

Central world entity manager.

Enums

AcceptedClientMovementOutcome

Result of applying accepted client-authored movement.

AddEntityError

Error returned when adding an entity to the runtime world fails.

BlockEffectSegmentResult 🔒

ConversionType

How conversion handles the source mob.

EntityAnchor

The point on an entity used by commands that resolve positions or facing.

EntityMoveError

Error returned when a live entity move cannot be committed.

EntityMovementEmission

Vanilla movement side effects emitted by Entity.move.

EntityMovementSyncPacket

Concrete movement sync packet ready for broadcast.

EntityOwnership

Whether the manager owns persistence for an entity.

EntityPositionRotSyncPacket

Position sync packet for entities that include rotation in delta updates.

EntityPositionSyncDecision

Encoded position sync selected for an entity movement update.

EntityPositionSyncPacket

Position sync packet for entities that do not include rotation in delta updates.

EntityVerticalMovementStateUpdate

Vanilla server-driven gate for vertical collision and ground-contact updates.

EntityVisibility

Entity visibility for a chunk column.

InsideBlockEffectType

Vanilla inside-block effect kinds applied after entity/block intersections.

MobEffectSyncChange

A queued mob-effect packet change produced by living effect state.

MobEffectSyncPacket

Concrete mob-effect packet ready to send to a player connection.

RemovalReason

Reasons an entity can be removed from the world.

TeleportPositionCommit 🔒

Constants

BUBBLE_COLUMN_ABOVE_DOWN_MIN_SPEED 🔒

BUBBLE_COLUMN_ABOVE_UP_ACCELERATION 🔒

BUBBLE_COLUMN_ABOVE_UP_MAX_SPEED 🔒

BUBBLE_COLUMN_DOWN_ACCELERATION 🔒

BUBBLE_COLUMN_INSIDE_DOWN_MIN_SPEED 🔒

BUBBLE_COLUMN_INSIDE_UP_ACCELERATION 🔒

BUBBLE_COLUMN_INSIDE_UP_MAX_SPEED 🔒

DAMAGE_KNOCKBACK_POWER 🔒

DEATH_DURATION

Duration in ticks of the death animation before entity removal.

DEFAULT_AIR_DRAG

The default air drag value for entities.

DEFAULT_MAX_AIR_SUPPLY

Default maximum air supply in ticks before an entity starts drowning.

DEFAULT_SWING_DURATION

Vanilla default SwingAnimation duration in ticks.

DEFAULT_TICKS_REQUIRED_TO_FREEZE

Default ticks of powder-snow exposure required before an entity starts taking freeze damage.

ENTITY_LOAD_MAX_HORIZONTAL_POSITION 🔒

ENTITY_LOAD_MAX_VERTICAL_POSITION 🔒

HURT_DURATION_TICKS

Duration in ticks of the vanilla hurt animation.

IN_WALL_EYE_BOX_HEIGHT 🔒

KNOCKBACK_DIRECTION_EPSILON_SQ 🔒

LEASH_SCAN_HALF_SIZE 🔒

LEASH_SCAN_SIZE 🔒

MAX_ENTITY_TAGS

Maximum number of scoreboard tags a single entity may carry.

MOVEMENT_RECORD_EPSILON 🔒

MOVE_TOWARDS_CLOSEST_SPACE_DIRECTIONS 🔒

NO_PHYSICS_COLLISION_EPSILON 🔒

POSITION_SYNC_THRESHOLD

Squared position delta needed before vanilla considers a movement worth syncing.

SPEED_MODIFIER_POWDER_SNOW_ID 🔒

WATER_ENTITY_FLOW_SCALE 🔒

Statics

ENTITIES

Global entity registry.

ENTITY_COUNTER 🔒

Global counter for allocating unique entity IDs.

Traits

DefaultEntityPush

Vanilla push and cramming behavior with no overrides. Implementors only read state, only write velocity and the velocity sync flag, and never re-enter the entity manager. Entities that override contact, velocity or cramming hooks must not opt in.

Entity

A trait for entities.

EntityEventSource

Object-safe access to an entity trait object from default Entity methods.

EntityLevelCallback

Callback interface for entity lifecycle events.

EntitySyncedData

Thread-safe access to an entity’s vanilla synchronized data.

ItemFrame

Vanilla ItemFrame behavior used by comparators.

LivingEntity

A trait for living entities that can take damage, heal, and die.

LivingEntitySyncedData

Thread-safe access to synchronized data declared by vanilla LivingEntity.

Functions

aabb_contains_any_liquid 🔒

apply_block_effect_segment 🔒

apply_effects_from_block_movements 🔒

apply_post_teleport_transition 🔒

apply_step_on_block 🔒

axis_component 🔒

block_state_suffocates_eye_box 🔒

change_entity_world 🔒

change_non_player_entity_world 🔒

clamp_loaded_entity_position 🔒

Clamps an entity position using vanilla’s load-time world-bound limits.

closest_open_space_direction 🔒

collided_with_fluid 🔒

direction_step 🔒

entity_eye_suffocation_box 🔒

entity_loot_ref 🔒

entity_type_name 🔒

equipment_items_to_packet_items 🔒

fall_damage_reset_clip_target 🔒

fall_flying_collision_damage 🔒

fall_flying_free_fall_interval 🔒

finish_inside_block_effects 🔒

get_input_vector 🔒

get_kill_credit 🔒

Returns the living entity that will be credited with killing this entity.

horizontal_distance 🔒

indirect_passengers 🔒

init_entities

Initializes the global entity registry, once the main registry is frozen.

leash_scan_area 🔒

leashables_leashed_to_holder_in_area_near_position

Finds the leashable mobs near a position whose holder is holder.

living_loot_equipment 🔒

Clones every equipment slot of entity so loot predicates can read it without holding the equipment lock while the table rolls.

loot_equipment 🔒

living_loot_equipment for any entity; None for non-living entities.

nbt_bool 🔒

next_entity_id

Allocates a new unique entity ID.

passenger_transition 🔒

passenger_transition_position 🔒

passenger_transition_rotation 🔒

physics_state_for_move 🔒

record_movement_for_block_effects 🔒

relative_on_axis 🔒

remove_after_changing_dimensions 🔒

remove_entity_name_actions 🔒

reset_forward_direction_of_relative_portal_position 🔒

select_swimming_state 🔒

send_teleport_transition_to_riding_players 🔒

should_apply_entity_cramming_damage 🔒

should_apply_resolved_movement 🔒

start_riding_entities 🔒

sync_dirty_mob_effects

Pushes newly dirty mob-effect state into a living entity’s synced data.

teleport_entity_cross_world 🔒

teleport_entity_same_world 🔒

teleport_set_position 🔒

transfer_leashables_to_holder 🔒

trapdoor_usable_as_ladder_state 🔒

world_aabb_center 🔒

Type Aliases

ActiveMobEffect

Active mob-effect state stored on a living entity.

AfterConversion

Finalizes a freshly converted mob.

InsideBlockEffectCallback

Callback queued around an inside-block effect.

SharedEntity

Shared ownership of an entity through its gameplay interface.

WeakEntity

Type alias for a weak entity reference.