Bedrock Edition entity components documentation

This is the entity components documentation for Bedrock Edition 1.12.0.

Version: 1.12.0.28

AI Goals

minecraft:behavior.avoid_mob_type

Allows this entity to avoid certain mob types.

Parameters

Type	Name	Default Value	Description
JSON Object	entity_types		List of entity types this mob avoids. Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Boolean must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more
Decimal	max_dist	0.0	Maximum distance to look for an entity
Decimal	max_flee	0.5	Distance in blocks within the mob considers it should stop fleeing.
Decimal	walk_speed_multiplier	1.0	Multiplier for walking speed. 1.0 means keep the regular speed, while higher numbers make the walking speed faster
Decimal	sprint_speed_multiplier	1.0	Multiplier for running speed. 1.0 means keep the regular speed, while higher numbers make the running speed faster
Decimal	probability_per_strength	1.0	Determines how likely it is that this entity will stop avoiding another entity based on that entity's strength
Boolean	ignore_visibility	false	If true, visbility between this entity and the mob type will not be checked.

minecraft:behavior.pick_up_anger

Allows the mob to pick up angry state from other mobs in this area.

Parameters

|- |JSON Object |entity_types | |List of entities to pick up anger from |Minecraft Filters |filters | |Conditions that make this entry in the list valid |Decimal |max_dist |16 |Distance within (in blocks) this mob will pick up anger in the area |Minecraft Filters |filters | |Conditions to make this entry in the list valid |Decimal |speed_multiplier |1.0 |Multiplier speed of the mob when using this AI Goal |}

Parameters

Type	Name	Default Value	Description

minecraft:behavior.beg

Allows this mob to look at and follow the player that holds food they like.

Parameters

Type	Name	Default Value	Description
List	items		List of items that this mob likes
Decimal	look_distance	8.0	Distance in blocks the mob will beg from
Range [a, b]	look_time	[2, 4]	The range of time in seconds this mob will stare at the player holding a food they like, begging for it

minecraft:behavior.pick_up_anger

Allows this entity to pick up angry state from another entity.

Parameters

Type	Name	Default Value	Description
JSON Object	entity_types	minecraft:behavior.break_door Allows this mob to break doors. minecraft:behavior.stomp_turtle_egg Allows this mob to stomp turtle eggs. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer search_range 0 The distance in blocks it will look for turtle eggs to move towards Integer search_height 1 Height in blocks the mob will look for turtle eggs to move towards Integer search_count 10 The number of blocks each tick that the mob will check within its search range and height for a valid block to move to. A value of 0 will have the mob check every block within range in one tick Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot Integer interval 120 A random value to determine when to randomly move somewhere. This has a 1/interval chance to choose this goal minecraft:behavior.breed Allows this mob to breed with other mobs. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal minecraft:behavior.charge_held_item Allows this mob to charge and use their held item. Parameters Type Name Default Value Description List items The list of items that can be used to charge the held item. minecraft:behavior.defend_village_target Allows the mob to stay in the village and fight mobs hostile to the villagers. Parameters Type Name Default Value Description JSON Object entity_types List of entity types this mob considers a threat to the village Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Boolean must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more minecraft:behavior.drink_potion Allows the mob to drink potions based on specified environment conditions. Parameters Type Name Default Value Description speed_modifier 0.0 List potions A list of potions that this entity can drink. Each potion entry has the following parameters: Potion Entry Parameters Type Name Default Value Description Integer id -1 The registry ID of the potion to use Decimal chance 1.0 The percent chance (from 0.0 to 1.0) of this potion being selected when searching for a potion to use. Minecraft Filter filters The filters to use when determining if this potion can be selected. minecraft:behavior.door_interact Allows the mob to open and close doors. minecraft:behavior.eat_block Allows the mob to eat a block (for example, sheep eating grass). Parameters Type Name Default Value Description Trigger on_eat Trigger to fire when the mob eats a block of grass minecraft:behavior.explore_outskirts Allows a mob to explore the outskirts of a village. Parameters Type Name Default Value Description Integer wait_time 0 The time the mob will stand around 'searching' for POIs Decimal explore_dist 5.0 The distance in which the mob will proceed past the village bounds Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal minecraft:behavior.flee_sun Allows the mob to run away from direct sunlight and seek shade. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal minecraft:behavior.float Allows the mob to stay afloat while swimming. minecraft:behavior.follow_owner Allows the mob to follow the player that owns them. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Decimal start_distance 10.0 The distance in blocks that the owner can be away from this mob before it starts following it Decimal stop_distance 2.0 The distance in blocks this mob will stop from its owner while following it minecraft:behavior.follow_parent Allows the mob to follow their parent around. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal minecraft:behavior.follow_caravan Allows the mob to follow mobs that are in a caravan. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer entity_count 1 Number of entities that can be in the caravan JSON Object entity_types List of entity types that this mob can follow in a caravan Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Boolean must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more minecraft:behavior.follow_mob Allows the mob to follow other mobs. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Decimal stop_distance 2.0 The distance in blocks this mob stops from the mob it is following Integer search_range 0 The distance in blocks it will look for a mob to follow minecraft:behavior.go_home Allows the mob to move back to the position they were spawned. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer interval 120 A random value to determine when to randomly move somewhere. This has a 1/interval chance to choose this goal Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot String on_home Event to run when this mob gets home. minecraft:behavior.knockback_roar Allows the mob to perform a damaging knockback that affects all nearby entities. Parameters Type Name Default Value Description Decimal duration 1.0 The duration of the roar (in seconds). Decimal attack_time 0.5 The delay after which the knockback occurs (in seconds). Integer knockback_damage 6 The damage dealt by the knockback roar. Integer knockback_strength 4 The strength of the knockback. Integer knockback_range 4 The radius (in blocks) of the knockback effect. String on_roar_end Event to trigger when roaring ends. Decimal cooldown_time 0.0 Time in seconds the mob has to wait before using the goal again minecraft:behavior.scared Allows the a mob to become scared when the weather outside is thundering Parameters Type Name Default Value Description Integer sound_interval 0 The interval in which a sound will play when active in a 1/delay chance to kick off minecraft:behavior.move_to_water Allows the mob to move back into water when on land. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer search_range 0 The distance in blocks it will look for water to move towards Integer search_height 1 Height in blocks the mob will look for water to move towards Integer search_count 10 The number of blocks each tick that the mob will check within its search range and height for a valid block to move to. A value of 0 will have the mob check every block within range in one tick Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot minecraft:behavior.move_to_land Allows the mob to move back onto land when in water. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer search_range 0 The distance in blocks it will look for land to move towards Integer search_height 1 Height in blocks the mob will look for land to move towards Integer search_count 10 The number of blocks each tick that the mob will check within its search range and height for a valid block to move to. A value of 0 will have the mob check every block within range in one tick Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot minecraft:behavior.move_to_poi Allows the mob to move to a POI if able to. Parameters Type Name Default Value Description String poi_type Tells the goal what POI type it should be looking for Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal minecraft:behavior.move_to_village Allows the mob to move into a random location within a village. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot minecraft:behavior.hide Allows a mob with the hide component to attempt to move to - and hide at - an owned or nearby POI. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Decimal timeout_cooldown 8.0 The cooldown time in seconds before the goal can be reused after an internal failure or timeout condition. String poi_type Defines what POI type to hide at. Decimal duration 1.0 Amount of time in seconds that the mob reacts. minecraft:behavior.work Allows the NPC to use their jobsite POI. Parameters Type Name Default Value Description Integer sound_delay_min 0 The min interval in which a sound will play Integer sound_delay_max 0 The max interval in which a sound will play Integer goal_cooldown 0 The amount of ticks the goal will be on cooldown before it can be used again Integer active_time 0 The amount of ticks the NPC will stay in their the work location Boolean can_work_in_rain false If true, this entity can work when their jobsite POI is being rained on. Integer work_in_rain_tolerance -1 If "can_work_in_rain" is false, this is the maximum number of ticks left in the goal where rain will not interrupt the goal String on_arrival Event to run when the mob reaches their jobsite and finishes working. Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal minecraft:behavior.random_breach Allows the mob to randomly break surface of the water. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer xz_dist 10 Distance in blocks on ground that the mob will look for a new spot to move to. Must be at least 1 Integer y_dist 7 Distance in blocks that the mob will look up or down for a new spot to move to. Must be at least 1 Integer interval 120 A random value to determine when to randomly move somewhere. This has a 1/interval chance to choose this goal Decimal cooldown_time 0.0 Time in seconds the mob has to wait before using the goal again minecraft:behavior.nearest_attackable_target Allows the mob to check for and pursue the nearest valid target. Parameters Type Name Default Value Description JSON Object entity_types List of entity types that this mob considers valid targets Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Boolean must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more Decimal within_radius 0.0 Distance in blocks that the target can be within to launch an attack Integer attack_interval 0 Time in seconds between attacks Boolean must_see false If true, only entities in this mob's viewing range can be selected as targets Decimal must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more Boolean must_reach false If true, only entities that this mob can path to can be selected as targets Boolean reselect_targets false If true, the target will change to the current closest entity whenever a different entity is closer Integer scan_interval 10 How many ticks to wait between scanning for a target. Decimal target_search_height -1.0f Height in blocks to search for a target mob. -1.0f means the height does not matter. Decimal persist_time 0.0f Time in seconds for a valid target to stay targeted when it becomes and invalid target. minecraft:behavior.hurt_by_target Allows the mob to target another mob that hurts them. Parameters Type Name Default Value Description JSON Object entity_types List of entity types that this mob can target when hurt by them Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Boolean must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more Boolean alert_same_type false If true, nearby mobs of the same type will be alerted about the damage Boolean hurt_owner false If true, the mob will hurt its owner and other mobs with the same owner as itself minecraft:behavior.owner_hurt_by_target Allows the mob to target another mob that hurts their owner. Parameters Type Name Default Value Description JSON Object entity_types List of entity types that this mob can target if they hurt their owner Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Boolean must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more minecraft:behavior.owner_hurt_target Allows the mob to target a mob that is hurt by their owner. Parameters Type Name Default Value Description JSON Object entity_types List of entity types that this entity can target if the potential target is hurt by this mob's owner Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Boolean must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more minecraft:behavior.lay_egg Allows the mob to lay an egg block on a sand block if the mob is pregnant. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer search_range 0 The distance in blocks it will look for a sand block to move towards Integer search_height 1 Height in blocks the mob will look for sand block to move towards Integer search_count 10 The number of blocks each tick that the mob will check within its search range and height for a valid block to move to. A value of 0 will have the mob check every block within range in one tick Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot String on_lay Event to run when this mob lays the egg. minecraft:behavior.look_at_player Allows the mob to look at the player when the player is nearby. Parameters Type Name Default Value Description Decimal look_distance 8.0 The distance in blocks from which the entity will look at Decimal probability 0.02 The probability of looking at the target. A value of 1.00 is 100% Range [a, b] look_time [2, 4] Time range to look at the entity Integer angle_of_view_vertical 360 The angle in degrees that the mob can see in the X-axis (left-right) Integer angle_of_view_horizontal 360 The angle in degrees that the mob can see in the Y-axis (up-down) minecraft:behavior.look_at_target Allows the mob to look at the entity they are targeting. Parameters Type Name Default Value Description Decimal look_distance 8.0 The distance in blocks from which the entity will look at Decimal probability 0.02 The probability of looking at the target. A value of 1.00 is 100% Range [a, b] look_time [2, 4] Time range to look at the entity Integer angle_of_view_vertical 360 The angle in degrees that the mob can see in the X-axis (left-right) Integer angle_of_view_horizontal 360 The angle in degrees that the mob can see in the Y-axis (up-down) minecraft:behavior.look_at_entity Allows the mob to look at nearby entities. Parameters Type Name Default Value Description Decimal look_distance 8.0 The distance in blocks from which the entity will look at Decimal probability 0.02 The probability of looking at the target. A value of 1.00 is 100% Range [a, b] look_time [2, 4] Time range to look at the entity Integer angle_of_view_vertical 360 The angle in degrees that the mob can see in the X-axis (left-right) Integer angle_of_view_horizontal 360 The angle in degrees that the mob can see in the Y-axis (up-down) Minecraft Filter filters Filter to determine the conditions for this mob to look at the entity minecraft:behavior.look_at_trading_player Allows the mob to look at the player they are trading with. Parameters Type Name Default Value Description Decimal look_distance 8.0 The distance in blocks from which the entity will look at Decimal probability 0.02 The probability of looking at the target. A value of 1.00 is 100% Range [a, b] look_time [2, 4] Time range to look at the entity Integer angle_of_view_vertical 360 The angle in degrees that the mob can see in the X-axis (left-right) Integer angle_of_view_horizontal 360 The angle in degrees that the mob can see in the Y-axis (up-down) minecraft:behavior.mount_pathing Allows the mob to move around on its own while mounted seeking a target to attack. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Decimal target_dist 0.0 The distance at which this mob wants to be away from its target Boolean track_target false If true, this mob will chase after the target as long as it's a valid target minecraft:behavior.move_indoors Can only be used by villagers. Allows them to seek shelter indoors. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Decimal timeout_cooldown 8.0 The cooldown time in seconds before the goal can be reused after an internal failure or timeout condition minecraft:behavior.move_through_village Can only be used by villagers. Allows the villagers to create paths around the village. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Boolean only_at_night false If true, the mob will only move through the village during night time minecraft:behavior.move_towards_restriction Allows guardians, iron golems and villagers to move within their pre-defined area that the mob should be restricted to. Other mobs don't have a restriction defined. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal minecraft:behavior.move_towards_target Allows mob to move towards its current target. Parameters Type Name Default Value Description Decimal within_radius 0.0 Defines the radius in blocks that the mob tries to be from the target. A value of 0 means it tries to occupy the same block as the target minecraft:behavior.follow_target_captain Allows mob to move towards its current target captain. Parameters Type Name Default Value Description Decimal within_radius 0.0 Defines the maximum distance in blocks a mob can get from its target captain before giving up trying to follow it. Decimal follow_distance 0.0 Defines the distance in blocks the mob will stay from its target while following. minecraft:behavior.move_to_random_block Allows mob to move towards a random block. Parameters Type Name Default Value Description Decimal within_radius 0.0 Defines the distance in blocks the mob has to be from the block for the movement to be finished. Decimal block_distance 16.0 Defines the distance from the mob, in blocks, that the block to move to will be chosen. minecraft:behavior.ocelotattack Can only be used by ocelots. Allows it to perform the sneak and pounce attack. Parameters Type Name Default Value Description Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed while using this attack Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed of this mob while using this attack Decimal sneak_speed_multiplier 1.0 Multiplier for the sneaking speed. 1.0 means the ocelot will move at the speed it normally sneaks minecraft:behavior.ocelot_sit_on_block Allows to mob to be able to sit in place like the ocelot. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal minecraft:behavior.lay_down Allows mobs to lay down at times. Parameters Type Name Default Value Description Integer interval 120 A random value to determine at what intervals something can occur. This has a 1/interval chance to choose this goal Integer random_stop_interval 120 a random value in which the goal can use to pull out of the behavior. This is a 1/interval chance to play the sound minecraft:behavior.offer_flower Allows the mob to offer the player a flower like iron golems do. minecraft:behavior.open_door Allows the mob to open doors. Requires the mob to be able to path through doors, otherwise the mob won't even want to try opening them. Parameters Type Name Default Value Description Boolean close_door_after true If true, the mob will close the door after opening it and going through it minecraft:behavior.panic Allows the mob to enter the panic state, which makes it run around and away from the damage source that made it enter this state. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Boolean ignore_mob_damage false If true, the mob will not panic in response to damage from other mobs (only fire/lava etc.) Boolean prefer_water false If true, the mob will prefer water over land Boolean force false If true, this mob will not stop panicking until it can't move anymore or the goal is removed from it minecraft:behavior.run_around_like_crazy Allows the mob to run around aimlessly. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal minecraft:behavior.restrict_sun Allows the mob to automatically start avoiding the sun when its a clear day out. minecraft:behavior.restrict_open_door Allows the mob to stay indoors during night time. minecraft:behavior.random_look_around Allows the mob to randomly look around. Parameters Type Name Default Value Description Range [a, b] look_time [2, 4] The range of time in seconds the mob will stay looking in a random direction before looking elsewhere minecraft:behavior.silverfish_merge_with_stone Allows the mob to go into stone blocks like silverfish do. Currently, it can only be used by silverfish. minecraft:behavior.silverfish_wake_up_friends Allows the mob to alert mobs in nearby blocks to come out. Currently, it can only be used by silverfish. minecraft:behavior.stay_while_sitting Allows the mob to stay put while it is in a sitting state instead of doing something else. minecraft:behavior.make_love Allows the villager to look for a mate to spawn other villagers with. Can only be used by villagers. minecraft:behavior.snacking Allows the mob to take a load off and snack on food that it found nearby. Parameters Type Name Default Value Description Decimal snacking_cooldown 7.5 The cooldown time in seconds before the mob is able to snack again Decimal snacking_cooldown_min 0.5f The minimum time in seconds before the mob is able to snack again Decimal snacking_stop_chance 0.0017 This is the chance that the mob will stop snacking, from 0 to 1 List items Items that we are interested in snacking on minecraft:behavior.random_sitting Allows the mob to randomly sit for a duration. Parameters Type Name Default Value Description Decimal start_chance 0.1 This is the chance that the mob will start sitting, from 0 to 1 Decimal stop_chance 0.3 This is the chance that the mob will stop sitting, from 0 to 1 Decimal cooldown_time 0.0 Time in seconds the mob has to wait before using the goal again Decimal min_sit_time 10 The minimum amount of time in seconds before the mob can stand back up minecraft:behavior.melee_attack Allows the mob to use close combat melee attacks. Parameters Type Name Default Value Description Decimal melee_fov 90.0 The allowable FOV the actor will use to determine if it can make a valid melee attack Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Boolean track_target false If true, this mob will chase after the target as long as it's a valid target String attack_types Defines the entity types this mob will attack Integer random_stop_interval 0 Defines the probability the mob will stop fighting. A value of 0 disables randomly stopping, while a value of 1 defines a 50% chance Decimal reach_multiplier 2.0 Multiplier for how far outside its box the mob can reach its target (this can be used to simulate a mob with longer arms by making this bigger) Boolean attack_once false If true, this mob will attack only one time. Boolean require_complete_path false If true, this goal will only trigger if the mob can reach its target. minecraft:behavior.stomp_attack Allows the mob to use the polar bear's melee attack. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Boolean track_target false If true, this mob will chase after the target as long as it's a valid target String attack_types Defines the entity types this mob will attack Integer random_stop_interval 0 Defines the probability the mob will stop fighting. A value of 0 disables randomly stopping, while a value of 1 defines a 50% chance Decimal reach_multiplier 2.0 Multiplier for how far outside its box the mob can reach its target (this can be used to simulate a mob with longer arms by making this bigger) Boolean attack_once false If true, this mob will attack only one time. Boolean require_complete_path false If true, this goal will only trigger if the mob can reach its target. minecraft:behavior.delayed_attack Allows the mob to an attack where the hit is delayed. Parameters Type Name Default Value Description Decimal attack_duration 1.0 The duration of the attack animation in seconds Decimal hit_delay_pct 1.0 The percentage of the attack_duration that must pass before the hit is made String sound_event The sound event to play when the attack starts Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Boolean track_target false If true, this mob will chase after the target as long as it's a valid target String attack_types Defines the entity types this mob will attack Integer random_stop_interval 0 Defines the probability the mob will stop fighting. A value of 0 disables randomly stopping, while a value of 1 defines a 50% chance Decimal reach_multiplier 2.0 Multiplier for how far outside its box the mob can reach its target (this can be used to simulate a mob with longer arms by making this bigger) Boolean attack_once false If true, this mob will attack only one time. minecraft:behavior.ranged_attack Allows the mob to use ranged attacks like shooting arrows. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Decimal ranged_fov 90.0 The allowable FOV the actor will use to determine if it can make a valid ranged attack Integer burst_shots 1 Number of shots fired every time the mob uses a charged attack Decimal burst_interval 0.0 Amount of time in seconds between each individual shot when firing multiple shots per attack Integer attack_interval_min 0 Minimum amount of time in seconds the entity will wait after an attack before launching another Integer attack_interval_max 0 Maximum amount of time in seconds the entity will wait after an attack before launching another Decimal attack_radius 0.0 Maximum distance the target can be for this mob to fire. If the target is further away, this mob will move first before firing Decimal charge_charged_trigger 0.0 The minimum amount of time in ticks the mob has to charge before firing a charged attack Decimal charge_shoot_trigger 0.0 The minimum amount of time in ticks for the mob to start charging a charged shot. Must be greater than 0 to enable burst shots minecraft:behavior.random_stroll Allows a mob to randomly stroll around. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer xz_dist 10 Distance in blocks on ground that the mob will look for a new spot to move to. Must be at least 1 Integer y_dist 7 Distance in blocks that the mob will look up or down for a new spot to move to. Must be at least 1 Integer interval 120 A random value to determine when to randomly move somewhere. This has a 1/interval chance to choose this goal minecraft:behavior.random_swim Allows an entity to randomly move through water. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer xz_dist 10 Distance in blocks on ground that the mob will look for a new spot to move to. Must be at least 1 Integer y_dist 7 Distance in blocks that the mob will look up or down for a new spot to move to. Must be at least 1 Integer interval 120 A random value to determine when to randomly move somewhere. This has a 1/interval chance to choose this goal minecraft:behavior.random_fly Allows a mob to randomly fly around. Parameters Type Name Default Value Description Integer xz_dist 10 Distance in blocks on ground that the mob will look for a new spot to move to. Must be at least 1 Integer y_dist 7 Distance in blocks that the mob will look up or down for a new spot to move to. Must be at least 1 Boolean can_land_on_trees true If true, the mob can stop flying and land on a tree instead of the ground minecraft:behavior.swim_wander Has the fish swim around when they can't pathfind. Parameters Type Name Default Value Description Decimal speed_multiplier 10 speed of the entity minecraft:behavior.tempt Allows the mob to be tempted by food they like. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal List items List of items this mob is tempted by Boolean can_get_scared false If true, the mob can stop being tempted if the player moves too fast while close to this mob Decimal within_radius 0.0 Distance in blocks this mob can get tempted by a player holding an item they like minecraft:behavior.trade_interest Allows the mob to look at a player that is holding a tradable item. Parameters Type Name Default Value Description Decimal within_radius 0.0 Distance in blocks this mob can be interested by a player holding an item they like Decimal interest_time 45.0 The max time in seconds that the trader will be interested with showing it's trade items Decimal remove_item_time 1.0 The max time in seconds that the trader will wait when you no longer have items to trade Decimal carried_item_switch_time 2.0 The max time in seconds that the trader will hold an item before attempting to switch for a different item that takes the same trade Decimal cooldown 2.0 The time in seconds before the trader can use this goal again minecraft:behavior.peek Allows the mob to peek out. This is what the shulker uses to look out of its shell. minecraft:behavior.play Allows the mob to play with other baby villagers. This can only be used by villagers. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal minecraft:behavior.receive_love Allows the villager to stop so another villager can breed with it. Can only be used by a Villager. minecraft:behavior.take_flower Can only be used by villagers. Allows the mob to accept flowers from Iron Golems. minecraft:behavior.harvest_farm_block Allows the villager to harvest nearby farms. Can only be used by villagers. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal minecraft:behavior.squid_idle Allows the squid to swim in place idly. Can only be used by the Squid. minecraft:behavior.squid_flee Allows the squid to swim away. Can only be used by the Squid. minecraft:behavior.squid_move_away_from_ground Allows the squid to move away from ground blocks and back to water. Can only be used by the Squid. minecraft:behavior.squid_out_of_water Allows the squid to stick to the ground when outside water. Can only be used by the Squid. minecraft:behavior.squid_dive Allows the squid to dive down in water. Can only be used by the Squid. minecraft:behavior.skeleton_horse_trap Allows Equine mobs to be Horse Traps and be triggered like them, spawning a lightning bolt and a bunch of horses when a player is nearby. Can only be used by Horses, Mules, Donkeys and Skeleton Horses. Parameters Type Name Default Value Description Decimal duration 1.0 Amount of time in seconds the trap exists. After this amount of time is elapsed, the trap is removed from the world if it hasn't been activated Decimal within_radius 0.0 Distance in blocks that the player has to be within to trigger the horse trap minecraft:behavior.sleep Allows mobs that own a bed to in a village to move to and sleep in it. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Decimal cooldown_time 0.0 Time in seconds the mob has to wait before using the goal again Decimal sleep_collider_height 1.0 The height of the mob's collider while sleeping Decimal sleep_collider_width 1.0 The width of the mob's collider while sleeping Decimal sleep_y_offset 1.0 The y offset of the mob's collider while sleeping Decimal timeout_cooldown 8.0 The cooldown time in seconds before the goal can be reused after an internal failure or timeout condition minecraft:behavior.swell Allows the creeper to swell up when a player is nearby. It can only be used by Creepers. Parameters Type Name Default Value Description Decimal start_distance 10.0 This mob starts swelling when a target is at least this many blocks away Decimal stop_distance 2.0 This mob stops swelling when a target has moved away at least this many blocks minecraft:behavior.dragonholdingpattern Allows the ender dragon to fly around in a circle around the center podium. Can only be used by the ender dragon. minecraft:behavior.dragonlanding Allows the ender dragon to stop flying and transition into perching mode. Can only be used by the ender dragon. minecraft:behavior.dragonscanning Allows the ender dragon to look around for a player to attack while in perch mode. Can only be used by the ender dragon. minecraft:behavior.dragonflaming Allows the ender dragon to use its flame breath attack. Can only be used by the ender dragon. minecraft:behavior.dragontakeoff Allows the ender dragon to leave perch mode and go back to flying around. Can only be used by the ender dragon. minecraft:behavior.dragonchargeplayer Allows the ender dragon to attack a player by flying fast at them. The player is chosen by the dragon scanning goal. Can only be used by the ender dragon. minecraft:behavior.dragonstrafeplayer Allows the ender dragon to fly around looking for a player and shoot fireballs at them. Can only be used by the ender dragon. minecraft:behavior.dragondeath Allows the ender dragon to go out with glory. This controls the ender dragon's death animation and can't be used by other mobs. minecraft:behavior.enderman_leave_block Allows the enderman to drop a block they are carrying. Can only be used by Endermen. minecraft:behavior.enderman_take_block Allows the enderman to take a block and carry it around. Can only be used by Endermen. minecraft:behavior.leap_at_target Allows monsters to jump at and attack their target. Can only be used by hostile mobs. Parameters Type Name Default Value Description Decimal yd 0.0 The height in blocks the mob jumps when leaping at its target Boolean must_be_on_ground true If true, the mob will only jump at its target if its on the ground. Setting it to false will allow it to jump even if its already in the air minecraft:behavior.guardian_attack Allows the guardian to use its laser beam attack. Can only be used by Guardians and Elder Guardians. minecraft:behavior.slime_float Can only be used by Slimes and Magma Cubes. Controls their ability to float in water / lava. minecraft:behavior.slime_keep_on_jumping Can only be used by Slimes and Magma Cubes. Allows the mob to continuously jump around like a slime. minecraft:behavior.slime_random_direction Can only be used by Slimes and Magma Cubes. Allows the mob to move in random directions like a slime. minecraft:behavior.slime_attack Can only be used by Slimes and Magma Cubes. Allows the mob to use a melee attack like the slime's. minecraft:behavior.raid_garden Allows the mob to eat crops out of farms until they are full. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer search_range 0 Distance in blocks the mob will look for crops to eat Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot Integer max_to_eat 6 Maximum number of things this entity wants to eat Integer full_delay 100 Amount of time in seconds before this mob wants to eat again Integer eat_delay 2 Time in seconds between each time it eats List blocks Blocks that the mob is looking for to eat minecraft:behavior.inspect_bookshelf Allows the mob to inspect bookshelves. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer search_range 0 Distance in blocks the mob will look for books to inspect Integer search_height 1 The height that the mob will search for bookshelves Integer search_count 10 The number of blocks each tick that the mob will check within its search range and height for a valid block to move to. A value of 0 will have the mob check every block within range in one tick Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot minecraft:behavior.player_ride_tamed Allows the mob to be ridden by the player after being tamed. minecraft:behavior.find_mount Allows the mob to look around for another mob to ride atop it. Parameters Type Name Default Value Description Decimal within_radius 0.0 Distance in blocks within which the mob will look for a mount Integer start_delay 0 Time the mob will wait before starting to move towards the mount Boolean avoid_water false If true, the mob will not go into water blocks when going towards a mount Boolean target_needed false If true, the mob will only look for a mount if it has a target Decimal mount_distance -1.0 This is the distance the mob needs to be, in blocks, from the desired mount to mount it. If the value is below 0, the mob will use its default attack distance minecraft:behavior.controlled_by_player Allows the mob to be controlled by the player. minecraft:behavior.wither_random_attack_pos_goal Allows the wither to launch random attacks. Can only be used by the wither. minecraft:behavior.wither_target_highest_damage Allows the wither to focus its attacks on whichever mob has dealt the most damage to it. Parameters Type Name Default Value Description JSON Object entity_types List of entity types the wither takes into account to find who dealt the most damage to it Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Boolean must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more minecraft:behavior.float_wander Allows the mob to float around like the Ghast. Parameters Type Name Default Value Description Integer xz_dist 10 Distance in blocks on ground that the mob will look for a new spot to move to. Must be at least 1 Integer y_dist 7 Distance in blocks that the mob will look up or down for a new spot to move to. Must be at least 1 Decimal y_offset 0.0 Height in blocks to add to the selected target position Boolean must_reach false If true, the point has to be reachable to be a valid target Boolean random_reselect false If true, the mob will randomly pick a new point while moving to the previously selected one Range [a, b] float_duration [0.0, 0.0] Range of time in seconds the mob will float around before landing and choosing to do something else minecraft:behavior.trade_with_player Allows the player to trade with this mob. minecraft:behavior.summon_entity Allows the mob to attack the player by summoning other entities. Parameters Type Name Default Value Description List summon_choices List of spells for the mob to use to summon entities. Each spell has the following parameters: Parameters of each spell Type Name Default Value Description Decimal min_activation_range 1.0 Lower bound of the activation distance in blocks for this spell Decimal max_activation_range -1.0 Upper bound of the activation distance in blocks for this spell Decimal cooldown_time 0.0 Time in seconds the mob has to wait before using the spell again Decimal weight 0.0 The weight of this spell. Controls how likely the mob is to choose this spell when casting one Boolean do_casting true If true, the mob will do the casting animations and render spell particles Integer particle_color 0 The color of the particles for this spell Minecraft Filter filters Filters that will make this entry in the list valid String start_sound_event The sound event to play when using this spell List sequence List of steps for the spell. Each step has the following parameters: Parameters of each step Type Name Default Value Description String shape line The base shape of this step. Valid values are circle and line Decimal base_delay 0.0 Amount of time in seconds to wait before this step starts Decimal delay_per_summon 0.0 Amount of time in seconds before each entity is summoned in this step Integer num_entities_spawned 1 Number of entities that will be spawned in this step String entity_type The entity type of the entities we will spawn in this step Decimal entity_lifespan -1.0 Amount of time in seconds that the spawned entity will be alive for. A value of -1.0 means it will remain alive for as long as it can Decimal size 1.0 The base size of the entity String target self The target of the spell. This is where the spell will start (line will start here, circle will be centered here) Integer summon_cap 0 Maximum number of summoned entities at any given time Decimal summon_cap_radius 0.0 String sound_event The sound event to play for this step Decimal cast_duration Total delay of the steps Time in seconds the spell casting will take minecraft:behavior.mingle Allows an entity to go to the village bell and mingle with other entities. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Decimal cooldown_time 0.0 Time in seconds the mob has to wait before using the goal again Decimal duration 1.0 Amount of time in seconds that the entity will chat with another entity List mingle_partner_type empty The entity type that this entity is allowed to mingle with Decimal mingle_distance 2.0f The distance from its partner that this entity will mingle. If the entity type is not the same as the entity, this value needs to be identical on both entities. minecraft:behavior.send_event Allows the mob to send an event to another mob. Parameters Type Name Default Value Description List sequence List of events to send Parameters of each event Type Name Default Value Description Decimal base_delay 0.0 Amount of time in seconds before starting this step String event The event to send to the entity String sound_event The sound event to play when this step happens Decimal cast_duration Total delay of the steps Time in seconds for the entire event sending process minecraft:behavior.charge_attack Allows the mob to attack its target by running at it. minecraft:behavior.vex_random_move Allows the mob to move around randomly like the Vex. minecraft:behavior.vex_copy_owner_target Allows the mob to target the same entity its owner is targeting. Parameters Type Name Default Value Description JSON Object entity_types List of entities this mob can copy the owner from Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Boolean must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more minecraft:behavior.pickup_items Allows the mob to pick up items on the ground. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Boolean track_target false If true, this mob will chase after the target as long as it's a valid target Decimal max_dist 0.0 Maximum distance this mob will look for items to pick up Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot minecraft:behavior.share_items Allows the mob to give items it has to others. Parameters Type Name Default Value Description JSON Object entity_types List of entities this mob will share items with Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Boolean must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Decimal max_dist 0.0 Maximum distance in blocks this mob will look for entities to share items with Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot minecraft:behavior.find_underwater_treasure Allows the mob to move towards the nearest underwater ruin or shipwreck. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer search_range 0 The range that the mob will search for a treasure chest within a ruin or shipwreck to move towards. Decimal stop_distance 2.0 The distance the mob will move before stopping. minecraft:behavior.circle_around_anchor Allows the mob to move in a circle around a point or a target. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Range [a, b] radius_range [5.0, 15.0] Range of radius in blocks of the circle to move around. Integer radius_change_chance 250 A random value to determine when to increase the size of the radius up to the maximum. This has a 1/value chance every tick to do so. Range [a, b] height_above_target_range [0.0, 0.0] When the mob finds a target, the range of height in blocks above the target to start the anchor point. Range [a, b] height_offset_range [0.0, 0.0] The range of height in blocks offset the mob can have from its anchor point. Integer height_change_chance 350 A random value to determine when to change the height of the mob from the anchor point. This has a 1/value chance every tick to do so. Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot minecraft:behavior.swoop_attack Allows the mob to move to attack a target. The goal ends if it has a horizontal collision or gets hit. Built to be used with flying mobs. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Range [a, b] delay_range [10.0, 20.0] Range of time in seconds between uses of this goal. minecraft:behavior.pet_sleep_with_owner Allows the pet mob to move onto a bed with its owner while sleeping. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer search_range 0 The distance in blocks from the owner the pet can be to sleep with owner. Integer search_height 1 Height in blocks from the owner the pet can be to sleep with owner. Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot minecraft:behavior.drop_item_for Allows the mob to move near a target and drop an item. Parameters Type Name Default Value Description Decimal speed_multiplier 1.0 Movement speed multiplier of the mob when using this AI Goal Integer search_range 0 The distance in blocks from the target the mob can be. Integer search_height 1 Height in blocks from the target the mob can be. Decimal goal_radius 0.5 Distance in blocks within the mob considers it has reached the goal. This is the "wiggle room" to stop the AI from bouncing back and forth trying to reach a specific spot JSON Object entity_types List of entity types this mob will drop items for. Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Boolean must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more Decimal max_dist 0.0 Maximum distance in blocks this mob will look for entities to drop an item for. Decimal drop_item_chance [1.0] The probability that the mob will drop an item. Decimal offering_distance [1.0] The distance in blocks the mob will try to be away from the entity when it drops the item. Range [a, b] time_of_day_range [0.0, 1.0] The valid times of day that this goal can be used. For reference: noon is 0.0, sunset is 0.25, midnight is 0.5, and sunrise is 0.75, and back to noon for 1.0. String loot_table Loot table to select items from. String on_drop_attempt Event to run when this mob attempts to drop an item. minecraft:behavior.sneeze Allows the mob to stop and sneeze possibly startling nearby mobs and dropping an item. Parameters Type Name Default Value Description Decimal cooldown_time 0.0 Time in seconds the mob has to wait before using the goal again Decimal probability 0.02 The probability of sneezing. A value of 1.00 is 100% Decimal drop_item_chance 1.0 The probability that the mob will drop an item when it sneezes. String loot_table Loot table to select dropped items from. String prepare_sound Sound to play when the sneeze is about to happen. String sound Sound to play when the sneeze occurs. String loot_table Loot table to select dropped items from. Decimal prepare_time 1.0 The time in seconds that the mob takes to prepare to sneeze (while the prepare_sound is playing). JSON Object entity_types List of entity types this mob will startle (cause to jump) when it sneezes. Parameters Type Name Default Value Description Minecraft Filter filters Conditions that make this entry in the list valid Decimal max_dist 16 Maximum distance this mob can be away to be a valid choice Decimal walk_speed_multiplier 1.0 Multiplier for the walking speed. A value of 1.0 means the speed is unchanged Decimal sprint_speed_multiplier 1.0 Multiplier for the running speed. A value of 1.0 means the speed is unchanged Boolean must_see false If true, the mob has to be visible to be a valid choice Decimal must_see_forget_duration 3.0 Determines the amount of time in seconds that this mob will look for a target before forgetting about it and looking for a new one when the target isn't visible any more Decimal within_radius 0.0 Distance in blocks that mobs will be startled. minecraft:behavior.roll This allows the mob to roll forward. Parameters Type Name Default Value Description Decimal probability [1.0] The probability that the mob will use the goal. Filters Filters allow data objects to specify test critera which allows their use. For example, a model that includes a filter will only be used when the filter criteria is true. A typical filter consists of four parameters: name: the name of the test to apply. domain: the domain the test should be performed in. An armor slot, for example. This parameter is only used by a few tests. all tests in 'none_of' must fail in order for the group to pass. operator: the comparison to apply with the value, such as 'equal' or 'greater'. value: the value being compared with the test. A typical filter looks like the following: { "test" : "moon_intensity", "subject" : "self", "operator" : "greater", "value" : 0.5 } Which results in the calling entity (self) calculating the moon_intensity at its location and returning true if the result is greater than 0.5. Tests can be combined into groups using the collections 'all_of' and 'any_of'. All tests in an 'all_of' group must pass in order for the group to pass. One or more tests in an 'any_of' group must pass in order for the group to pass. is_daytime Returns true during the daylight hours. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_daytime", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_daytime" } hourly_clock_time Compares the current 24 hour time with an int value in the range [0, 24000]. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Integer value (Required) An integer value. Examples Full.. { "test": "hourly_clock_time", "subject": "self", "operator": "equals", "value": 0 } Short (using Defaults).. { "test": "hourly_clock_time", "value": 0 } is_game_rule Tests whether a named game rule is active. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String domain (Required) The Game Rule to test. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_game_rule", "subject": "self", "domain": "domobspawning", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_game_rule", "domain": "domobspawning" } is_underwater Returns true when the subject entity is underwater. An entity is considered underwater if it is completely submerged in water blocks. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_underwater", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_underwater" } clock_time Compares the current time with a float value in the range (0.0, 1.0). 0.0= Noon 0.25= Sunset 0.5= Midnight 0.75= Sunrise Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Decimal value (Required) A floating point value. Examples Full.. { "test": "clock_time", "subject": "self", "operator": "equals", "value": 0.0 } Short (using Defaults).. { "test": "clock_time", "value": 0.0 } moon_intensity Compares the current moon intensity with a float value in the range (0.0, 1.0). Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Decimal value (Required) A floating point value. Examples Full.. { "test": "moon_intensity", "subject": "self", "operator": "equals", "value": 0.0 } Short (using Defaults).. { "test": "moon_intensity", "value": 0.0 } in_water Returns true when the subject entity is in water. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "in_water", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "in_water" } moon_phase Compares the current moon phase with an integer value in the range (0, 7). Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Integer value (Required) An integer value. Examples Full.. { "test": "moon_phase", "subject": "self", "operator": "equals", "value": 0 } Short (using Defaults).. { "test": "moon_phase", "value": 0 } distance_to_nearest_player Compares the distance to the nearest Player with a float value. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Decimal value (Required) A floating point value. Examples Full.. { "test": "distance_to_nearest_player", "subject": "self", "operator": "equals", "value": 0.0 } Short (using Defaults).. { "test": "distance_to_nearest_player", "value": 0.0 } has_equipment Tests for the presence of a named item in the designated slot of the subject entity. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String domain any (Optional) The equipment location to test Options Description any feet hand armor torso head leg String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Required) The item name to look for Examples Full.. { "test": "has_equipment", "subject": "self", "domain": "any", "operator": "equals", "value": "dirt" } Short (using Defaults).. { "test": "has_equipment", "value": "dirt" } is_underground Returns true when the subject entity is underground. An entity is considered underground if there are non-solid blocks above it. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_underground", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_underground" } in_water_or_rain Returns true when the subject entity is in water or rain. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "in_water_or_rain", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "in_water_or_rain" } on_ground Returns true when the subject entity is on ground. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "on_ground", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "on_ground" } is_brightness Tests the current brightness against a provided value in the range (0.0f, 1.0f). Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Decimal value (Required) The brightness value to compare with. Examples Full.. { "test": "is_brightness", "subject": "self", "operator": "equals", "value": 0.5 } Short (using Defaults).. { "test": "is_brightness", "value": 0.5 } is_humid Tests whether the Subject is in an area with humidity. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_humid", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_humid" } in_lava Returns true when the subject entity is in lava. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "in_lava", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "in_lava" } is_mark_variant Returns true if the subject entity is the mark variant number provided. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Integer value (Required) An integer value. Examples Full.. { "test": "is_mark_variant", "subject": "self", "operator": "equals", "value": 0 } Short (using Defaults).. { "test": "is_mark_variant", "value": 0 } is_color Returns true if the subject entity is the named color. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Required) The Palette Color to test Options Description white light_green orange silver magenta light_blue yellow pink blue gray cyan purple brown green red black Examples Full.. { "test": "is_color", "subject": "self", "operator": "equals", "value": "white" } Short (using Defaults).. { "test": "is_color", "value": "white" } in_clouds Returns true when the subject entity is in the clouds. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "in_clouds", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "in_clouds" } on_ladder Returns true when the subject entity is on a ladder. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "on_ladder", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "on_ladder" } has_component Returns true when the subject entity contains the named component. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Required) The component name to look for Examples Full.. { "test": "has_component", "subject": "self", "operator": "equals", "value": "minecraft:explode" } Short (using Defaults).. { "test": "has_component", "value": "minecraft:explode" } is_family Returns true when the subject entity is a member of the named family. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Required) The Family name to look for Examples Full.. { "test": "is_family", "subject": "self", "operator": "equals", "value": "player" } Short (using Defaults).. { "test": "is_family", "value": "player" } is_sneaking Returns true if the subject entity is sneaking. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_sneaking", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_sneaking" } has_ability Returns true when the subject entity has the named ability. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Required) The Ability type to test Options Description worldbuilder invulnerable flying mayfly instabuild flySpeed lightning walkSpeed mute noclip Examples Full.. { "test": "has_ability", "subject": "self", "operator": "equals", "value": "instabuild" } Short (using Defaults).. { "test": "has_ability", "value": "instabuild" } is_avoiding_mobs Returns true if the subject entity is fleeing from other mobs. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_avoiding_mobs", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_avoiding_mobs" } has_damage Returns true when the subject entity receives the named damage type. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Required) The Damage type to test Options Description contact none lava attack override projectile suffocation fall starve fire fatal Any damage which kills the subject fire_tick drowning block_explosion entity_explosion void suicide magic wither anvil thorns falling_block piston fly_into_wall Examples Full.. { "test": "has_damage", "subject": "self", "operator": "equals", "value": "fatal" } Short (using Defaults).. { "test": "has_damage", "value": "fatal" } is_owner Returns true if the subject entity is the owner of the calling entity. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_owner", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_owner" } is_target Returns true if the subject entity is the target of the calling entity. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_target", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_target" } is_immobile Returns true if the subject entity is immobile. An entity is immobile if it lacks AI goals, has just changed dimensions or if it is a mob and has no health. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_immobile", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_immobile" } is_altitude Tests the current altitude against a provided value. 0= bedrock elevation. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Integer value (Required) The altitude value to compare with Examples Full.. { "test": "is_altitude", "subject": "self", "operator": "equals", "value": 0 } Short (using Defaults).. { "test": "is_altitude", "value": 0 } is_moving Returns true if the subject entity is moving. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_moving", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_moving" } is_skin_id Returns true if the subject entity is the skin id number provided. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Integer value (Required) An integer value. Examples Full.. { "test": "is_skin_id", "subject": "self", "operator": "equals", "value": 0 } Short (using Defaults).. { "test": "is_skin_id", "value": 0 } is_climbing Returns true if the subject entity is climbing. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_climbing", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_climbing" } is_riding Returns true if the subject entity is riding on another entity. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_riding", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_riding" } in_caravan Returns true if the subject entity is in a caravan. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "in_caravan", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "in_caravan" } is_leashed Returns true if the subject entity is leashed. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_leashed", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_leashed" } is_variant Returns true if the subject entity is the variant number provided. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Integer value (Required) An integer value. Examples Full.. { "test": "is_variant", "subject": "self", "operator": "equals", "value": 0 } Short (using Defaults).. { "test": "is_variant", "value": 0 } has_tag Returns true if the subject entity has the tag provided. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Optional) A string value. Examples Full.. { "test": "has_tag", "subject": "self", "operator": "equals", "value": "" } Short (using Defaults).. { "test": "has_tag" } is_in_village Tests whether the subject is inside the bounds of a village. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_in_village", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_in_village" } is_visible Returns true if the subject entity is visible. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_visible", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_visible" } has_mob_effect Tests whether the subject has the specified mob effect. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Optional) A string value. Examples Full.. { "test": "has_mob_effect", "subject": "self", "operator": "equals", "value": "" } Short (using Defaults).. { "test": "has_mob_effect" } is_difficulty Tests the current difficulty level of the game. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Required) The game's difficulty level to test Options Description peaceful easy normal hard Examples Full.. { "test": "is_difficulty", "subject": "self", "operator": "equals", "value": "normal" } Short (using Defaults).. { "test": "is_difficulty", "value": "normal" } is_biome Tests whether the subject is currently in the named biome. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Required) The Biome type to test Options Description ice forest extreme_hills beach jungle desert flat the_nether mesa plain mushroom_island ocean river savanna stone_beach swamp taiga the_end bamboo_forest Examples Full.. { "test": "is_biome", "subject": "self", "operator": "equals", "value": "beach" } Short (using Defaults).. { "test": "is_biome", "value": "beach" } has_biome_tag Tests whether the biome the subject is in has the specified tag. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Required) The tag to look for Examples Full.. { "test": "has_biome_tag", "subject": "self", "operator": "equals", "value": " " } Short (using Defaults).. { "test": "has_biome_tag", "value": " " } is_snow_covered Tests whether the subject is in an area with snow cover. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "is_snow_covered", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "is_snow_covered" } is_temperature_type Tests whether the current temperature is a given type. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. String value (Required) The Biome temperature category to test Options Description ocean cold mild warm Examples Full.. { "test": "is_temperature_type", "subject": "self", "operator": "equals", "value": "cold" } Short (using Defaults).. { "test": "is_temperature_type", "value": "cold" } is_temperature_value Tests the current temperature against a provided value in the range (0.0, 1.0) where 0.0f is the coldest temp and 1.0f is the hottest. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Decimal value (Required) The Biome temperature value to compare with. Examples Full.. { "test": "is_temperature_value", "subject": "self", "operator": "equals", "value": 0.5 } Short (using Defaults).. { "test": "is_temperature_value", "value": 0.5 } has_trade_supply Tests whether the target has any trade supply left. Will return false if the target cannot be traded with. Parameters Type Name Default Description String subject self (Optional) The subject of this filter test. Options Description self The entity or object calling the test other The other member of an interaction, not the caller. parent The caller's current parent. player The player involved with the interaction. target The caller's current target. String operator equals (Optional) The comparison to apply with 'value'. Options Description >= Test for greater-than or equal to the value. equals Test for equality. <> Test for inequality. == Test for equality. = Test for equality. not Test for inequality. < Test for less-than the value. != Test for inequality. > Test for greater-than the value. <= Test for less-than or equal to the value. Boolean value true (Optional) true or false. Examples Full.. { "test": "has_trade_supply", "subject": "self", "operator": "equals", "value": true } Short (using Defaults).. { "test": "has_trade_supply" } Example This filter group will pass only when the moon_intensity is greater than 0.5 AND the caller's target entity is standing in water. "all_of" : [ : { "test" : "moon_intensity", "subject" : "self", "operator" : "greater", "value" : 0.5 }, : { "test" : "in_water", "subject" : "target", "operator" : "equal", "value" : true } : ] Client Entity Documentation Client entity definitions are contained within a Resource Pack. To start, create a new folder and name it "entity" inside the root of the Resource Pack. In the entity folder create a JSON file and give it a name.The JSON file needs a format version and minecraft:client_entity information. The minecraft:client_entity section contains the description for the entity. Under description there are a number of things that you can set about an entity. Generally, this file is defining what resources a mob requires and gives a friendly name to each, that the other definition files can use. identifier The identifier is used to register the entity with the server. In the Client Entity Definitions JSON the identifier sets the appearance of the entity(materials, textures, geometry, etc.) The matching identifier in the Entity Behavior JSON in the Behavior Pack is what gives the entity its behaviors. min_engine_version When present, players can set the min version needed to allow the JSON to be parsed. The version in the definition is compared to the engine version for which the top resource pack was built.If a definition's min_engine_version is newer than that pack's engine version then the definition is not parsed. Multiple definition files may use the same identifier, in which case only one of those definitions will be loaded. The definition with the same or closest and not greater min_engine_version, as compared to the top resource pack's engine version, will be parsed; all other definitions with the same identifier will not be parsed. This can be useful for continuing to support an older version of an entity, when an older resource pack is used at the top of the resource pack stack, while also supporting a newer version of the entity in all other cases. materials, textures, animations Players can set the materials, texture and geometry used for the entity in this section. Players can set one or more materials, textures, and geometries that can be used by the mob. Players must set user defined names for them. These names are used in the Render Controllers JSON. Players can reference materials, textures, and geometry from the vanilla Minecraft Resource Pack or create their own. Custom materials, textures, and geometry should be in the corresponding folder at the root of the Resource Pack. scripts Scripts allow players to use MoLang to compute calculations once and store that value. This value than can be used over and over again without the need to constantly re-compute the calculations. Scripts currently support pre - animation and scale. More script types will be added later. -Pre-animation scripts are evaluated immediately before animations are processed. -Scale sets the scale of the mob's geometry. Example pre-animation script for cod "scripts": { "pre_animation": [ "variable.ZRot = !query.is_in_water ? Math.cos((query.time_stamp + global.frame_alpha) * 14.32) * 90 : 0.0;", "variable.AnimationAmountBlend = Math.lerp(variable.AnimationAmountPrev, variable.AnimationAmount, global.frame_alpha);" ] }, Example scale script for the bat "scripts": { "scale": "0.35" }, animations Allows the player to assign names to reference the long name for animations. These names are used by the animation controller JSON. Players can reference animations from the vanilla Minecraft Resource Pack or create their own. Custom animations should be in the animation folder at the root of the Resource Pack. animation_controllers Animation controllers decide which animations to play when. Each Controller contains a list of states that play one or more animations. Allows the player to assign names to reference the long names for animation controllers. Names are required and need to be unique from all other names in the animation controllers for that mob. Players can reference animation controllers from the vanilla Minecraft Resource Pack or create their own. Custom animation controllers should be in the animation_controllers folder at the root of the Resource Pack. particle Allows the player to assign a key to reference the long name for particles. When these are present, the particle is created when the entity is spawned. Keys are required and need to be unique from all other keys in the animation controllers. Players can reference particles from the vanilla Minecraft Resource Pack or create their own. Custom particles should be in the particle folder at the root of the Resource Pack. render_controllers Specifies the names of render controllers. This name needs to match the name of a corresponding JSON located in the Render Controllers folder. Players can reference Render Controllers from the vanilla Minecraft Resource Pack or create their own. Custom Render Controllers should be in the textures folder at the root of the Resource Pack. locators Locator offsets are specified in model space. An example of a locator is the "lead" locator used to specify where the lead will attach to graphically. "locators": { "lead": { "head": [ 0.0, 14.0, -6.0 ] } } Example client entity definitions JSON for the pig "format_version": "1.8.0", "minecraft:client_entity": { "description": { "identifier": "minecraft:pig", "min_engine_version": "1.8.0", "materials": { "default": "pig" }, "textures": { "default": "textures/entity/pig/pig", "saddled": "textures/entity/pig/pig_saddle" }, "geometry": { "default": "geometry.pig.v1.8" }, "animations": { "setup": "animation.pig.setup", "walk": "animation.quadruped.walk", "look_at_target": "animation.common.look_at_target", "baby_transform": "animation.pig.baby_transform" }, "animation_controllers": [ { "setup": "controller.animation.pig.setup" }, { "move": "controller.animation.pig.move" }, { "baby": "controller.animation.pig.baby" } ], "render_controllers": [ "controller.render.pig" ], "locators": { "lead": { "head": [ 0.0, 14.0, -6.0 ] } }, "spawn_egg": { "texture": "spawn_egg", "texture_index": 2 } } } enable_attachables This determines if the entity can equip attachables when this is set to true. This allows the entity to render armor. "enable_attachables": true Spawn Egg This sets the color or texture used for the entity spawn egg. There are 2 ways to do this. The first is to use the hex value for the base color and the overlay color. Example spawn egg using hex value "spawn_egg": { "base_color": "#53443E", "overlay_color": "#2E6854" } The other way is to specify a texture. Example spawn egg specifying a texture. The texture is located in the "items_texture" JSON in the textures folder of the resource pack. When there are more than one texture associated with a texture name, you can use an index to pick the one that you want. If no index is specified then it is assumed to be 0 and the first texture in the list is used. Example spawn egg specifying a texture "spawn_egg": { "texture": "spawn_egg", "texture_index": 2 } Server Entity Documentation Entity Definition Properties These properties are part of the Entity Definition as a whole and go before the Component or Component Groups. Make sure to place them before any Components, Component Groups or Events sections or they will be ignored. do_not_upgrade Disables all current and future backwards compatibility for this entity. If new components or properties are added or changed to the vanilla version of this entity, they will not be applied. format_version Specifies the version of the game this entity was made in. If the version is lower than the current version, any changes made to the entity in the vanilla version will be applied to it. Code Example Example { "format_version": "1.8.0", "minecraft:entity": { "do_not_upgrade": {}, "component_groups": { ... } ... } } Entity Description Properties This section defines properties required to identify and construct the entity animations Sets the mapping of internal animation references to actual animations. This is a JSON Object of name/animation pairs Parameters Type Name Default Value Description String name none Internal (to the entity) name of this animation entry String animation none Actual animation to use scripts Sets the mapping of internal animation controller references to actual animation controller. This is a JSON Array of name/animation-controller pairs Parameters Type Name Default Value Description String name none Internal (to the entity) name of this animation entry String animation controller none Actual animation to use Entity Description Properties identifier Sets the name for this entity's description. Parameters Type Default Value Description String The identifier for this entity runtime_identifier Sets the name for the Vanilla Minecraft identifier this entity will use to build itself from. Parameters Type Default Value Description String The identifier for the class to construct this entity with is_spawnable Sets whether or not this entity has a spawn egg in the creative ui. Parameters Type Default Value Description Boolean false Set to determine if this entity has a spawn egg. is_summonable Sets whether or not we can summon this entity using commands such as /summon. Parameters Type Default Value Description Boolean false Flag to mark this entity as being summonable or not. is_experimental Sets whether or not this entity is experimental. Experimental entities are only enabled when the experimental toggle is enabled. Parameters Type Default Value Description Boolean false Flag to mark this entity as being experimental or not. Attributes minecraft:attack Defines an entity's melee attack and any additional effects on it. Parameters Type Name Default Value Description Range [a, b] damage Range of the random amount of damage the melee attack deals. A negative value can heal the entity instead of hurting it String effect_name Identifier of the status ailment to apply to an entity attacked by this entity's melee attack Decimal effect_duration 0.0 Duration in seconds of the status ailment applied to the damaged entity minecraft:spell_effects Defines what mob effects to add and remove to the entity when adding this component. Parameters Type Name Default Value Description List add_effects List of effects to add to this entity after adding this component Parameters Type Name Default Value Description String effect Effect to add to this entity. Includes 'duration' in seconds, 'amplifier' level, 'ambient' if it is to be considered an ambient effect, and 'visible' if the effect should be visible String remove_effects List of identifiers of effects to be removed from this entity after adding this component minecraft:strength Defines the entity's strength to carry items. Parameters Type Name Default Value Description Integer value 1 The initial value of the strength Integer max 5 The maximum strength of this entity Properties minecraft:ambient_sound_interval Sets the entity's delay between playing its ambient sound. Parameters Type Name Default Value Description Decimal min 8.000000 Minimum time in seconds before the entity plays its ambient sound again Decimal max 16.000000 Maximum time in seconds to randomly add to the ambient sound delay time. String event_name ambient Level sound event to be played as the ambient sound. minecraft:burns_in_daylight Specifies if/how a mob burns in daylight. minecraft:can_climb Allows this entity to climb up ladders. minecraft:can_fly Marks the entity as being able to fly, the pathfinder won't be restricted to paths where a solid block is required underneath it. minecraft:can_power_jump Allows the entity to power jump like the horse does in vanilla. minecraft:collision_box Sets the width and height of the entity's collision box. Parameters Type Name Default Value Description Decimal width 1.0 Width and Depth of the collision box in blocks. A negative value will be assumed to be 0 Decimal height 1.0 Height of the collision box in blocks. A negative value will be assumed to be 0 minecraft:color Defines the entity's color. Only works on vanilla entities that have predefined color values (sheep, llama, shulker). Parameters Type Name Default Value Description Integer value 0 The Palette Color value of the entity minecraft:color2 Defines the entity's second texture color. Only works on vanilla entities that have a second predefined color values (tropical fish). Parameters Type Name Default Value Description Integer value 0 The second Palette Color value of the entity minecraft:default_look_angle Sets this entity's default head rotation angle. Parameters Type Name Default Value Description Decimal value 0.0f Angle in degrees minecraft:is_dyeable Allows dyes to be used on this entity to change its color. Parameters Type Name Default Value Description String interact_text The text that will display when interacting with this entity with a dye when playing with Touch-screen controls minecraft:equipment Sets the equipment table to use for this entity. Parameters Type Name Default Value Description String table The file path to the equipment table, relative to the behavior pack's root List slot_drop_chance A list of slots with the chance to drop an equipped item from that slot minecraft:fire_immune Sets that this entity doesn't take damage from fire. minecraft:type_family Defines the families this entity belongs to. Parameters Type Name Default Value Description List family List of family names minecraft:floats_in_liquid Sets that this entity can float in liquid blocks. minecraft:flying_speed Speed in the blocks that this entity flies at. Parameters Type Name Default Value Description Decimal value 0.02 Flying speed in blocks per tick minecraft:foot_size Sets the number of blocks the entity can step without jumping. Parameters Type Name Default Value Description Decimal value 0.5 The value of the size of the entity's step minecraft:friction_modifier Defines how much does friction affect this entity. Parameters Type Name Default Value Description Decimal value 1.0 The higher the number, the more the friction affects this entity. A value of 1.0 means regular friction, while 2.0 means twice as much minecraft:hurt_when_wet Specifies if an actor is hurt when wet. minecraft:ground_offset Sets the offset from the ground that the entity is actually at. Parameters Type Name Default Value Description Decimal value 0.0 The value of the entity's offset from the terrain, in blocks minecraft:is_baby Sets that this entity is a baby. minecraft:is_charged Sets that this entity is charged. minecraft:is_chested Sets that this entity is currently carrying a chest. minecraft:is_hidden_when_invisible Sets that this entity can hide from hostile mobs while invisible. minecraft:is_ignited Sets that this entity is currently on fire. minecraft:is_saddled Sets that this entity is currently saddled. minecraft:is_shaking Sets that this entity is currently shaking. minecraft:is_sheared Sets that this entity is currently sheared. minecraft:is_illager_captain Sets that this entity is an illager captain. minecraft:is_stunned Sets that this entity is currently stunned. minecraft:is_stackable Sets that this entity can be stacked. minecraft:is_tamed Sets that this entity is currently tamed. minecraft:item_controllable Defines what items can be used to control this entity while ridden. Parameters Type Name Default Value Description List control_items List of items that can be used to control this entity minecraft:loot Sets the loot table for what items this entity drops upon death. Parameters Type Name Default Value Description String table The path to the loot table, relative to the Behavior Pack's root minecraft:push_through Sets the distance through which the entity can push through. Parameters Type Name Default Value Description Decimal value 0.0 The value of the entity's push-through, in blocks minecraft:scale Sets the entity's visual size. Parameters Type Name Default Value Description Decimal value 1.0 The value of the scale. 1.0 means the entity will appear at the scale they are defined in their model. Higher numbers make the entity bigger minecraft:skin_id Skin ID value. Can be used to differentiate skins, such as base skins for villagers. Parameters Type Name Default Value Description Integer value 0 The ID of the skin. By convention, 0 is the ID of the base skin minecraft:sound_volume Sets the entity's base volume for sound effects. Parameters Type Name Default Value Description Decimal value 1.0 The value of the volume the entity uses for sound effects minecraft:variant Used to differentiate the component group of a variant of an entity from others (e.g. ocelot, villager). Parameters Type Name Default Value Description Integer value 0 The ID of the variant. By convention, 0 is the ID of the base entity minecraft:mark_variant Additional variant value. Can be used to further differentiate variants. Parameters Type Name Default Value Description Integer value 0 The ID of the variant. By convention, 0 is the ID of the base entity minecraft:walk_animation_speed Sets the speed multiplier for this entity's walk animation speed. Parameters Type Name Default Value Description Decimal value 1.0 The higher the number, the faster the animation for walking plays. A value of 1.0 means normal speed, while 2.0 means twice as fast minecraft:wants_jockey Sets that this entity wants to become a jockey. minecraft:input_ground_controlled When configured as a rideable entity, the entity will be controlled using WASD controls. Components minecraft:addrider Adds a rider to the entity. Requires minecraft:rideable. Parameters Type Name Default Value Description String entity_type The entity type that will be riding this entity String spawn_event The spawn event that will be used when the riding entity is created minecraft:ageable Adds a timer for the entity to grow up. It can be accelerated by giving the entity the items it likes as defined by feedItems. Parameters Type Name Default Value Description Decimal duration 1200.0 Amount of time before the entity grows up, -1 for always a baby. List feedItems List of items that can be fed to the entity. Includes 'item' for the item name and 'growth' to define how much time it grows up by List drop_items List of items that the entity drops when it grows up. String grow_up Event to run when this entity grows up minecraft:angry Defines the entity's 'angry' state using a timer. Parameters Type Name Default Value Description Integer duration 25 The amount of time in seconds that the entity will be angry Integer duration_delta 0 Variance in seconds added to the duration [-delta, delta] Boolean broadcastAnger false If true, other entities of the same entity definition within the broadcastRange will also become angry Integer broadcastRange 20 Distance in blocks within which other entities of the same entity definition will become angry Minecraft Filter broadcast_filters Conditions that make this entry in the list valid String calm_event Event to run after the number of seconds specified in duration expires (when the entity stops being 'angry') minecraft:boostable Defines the conditions and behavior of a rideable entity's boost. Parameters Type Name Default Value Description Integer duration 3 Time in seconds for the boost Decimal speed_multiplier 1.0 Factor by which the entity's normal speed increases. E.g. 2.0 means go twice as fast List boost_items List of items that can be used to boost while riding this entity. Each item has the following properties: Parameters Type Name Default Value Description String item Name of the item that can be used to boost String replaceItem The item used to boost will become this item once it is used up Integer damage 1 This is the damage that the item will take each time it is used minecraft:annotation.break_door Allows the actor to break doors assuming that that flags set up for the component to use in navigation. Parameters Type Name Default Value Description Decimal break_time 12.0 The time in seconds required to break through doors. String min_difficulty hard The minimum difficulty that the world must be on for this entity to break doors. minecraft:breathable Defines what blocks this entity can breathe in and gives them the ability to suffocate. Parameters Type Name Default Value Description Integer totalSupply 15 Time in seconds the entity can hold its breath Integer suffocateTime -20 Time in seconds between suffocation damage Decimal inhaleTime 0.0 Time in seconds to recover breath to maximum Boolean breathes_air true If true, this entity can breathe in air Boolean breathes_water false If true, this entity can breathe in water Boolean breathesLava false If true, this entity can breathe in lava Boolean breathesSolids false If true, this entity can breathe in solid blocks Boolean generatesBubbles true If true, this entity will have visible bubbles while in water List breatheBlocks List of blocks this entity can breathe in, in addition to the above List nonBreatheBlocks List of blocks this entity can't breathe in, in addition to the above minecraft:burns_in_daylight Specifies if/how a mob burns in daylight. minecraft:strength Defines the entity's strength to carry items. Parameters Type Name Default Value Description Integer value 1 The initial value of the strength Integer max 5 The maximum strength of this entity minecraft:breedable Defines the way an entity can get into the 'love' state. Parameters Type Name Default Value Description Boolean requireTame true If true, the entities need to be tamed first before they can breed. Boolean blend_attributes true If true, the entities will blend their attributes in the offspring after they breed. For example, horses blend their health, movement, and jump_strength in their offspring. Decimal extraBabyChance 0.0 Chance that up to 16 babies will spawn between 0.0 and 1.0, where 1.0 is 100% Decimal breedCooldown 60.0 Time in seconds before the Entity can breed again Boolean inheritTamed true If true, the babies will be automatically tamed if its parents are Boolean allowSitting false If true, entities can breed while sitting JSON Object mutation_factor Determines how likely the babies are to NOT inherit one of their parent's variances. Values are between 0.0 and 1.0, with a higher number meaning more likely to mutate Parameters Type Name Default Value Description Decimal variant 0.0 The percentage chance of a mutation on the entity's variant type Decimal extra_variant 0.0 The percentage chance of a mutation on the entity's extra variant type Decimal color 0.0 The percentage chance of a mutation on the entity's color List breedItems The list of items that can be used to get the entity into the 'love' state List environment_requirements The list of nearby block requirements to get the entity into the 'love' state. block The block types required nearby for the entity to breed. count The number of the required block types nearby for the entity to breed. radius How many blocks radius from the mob's center to search in for the required blocks. Bounded between 0 and 16. List breedsWith The list of entity definitions that this entity can breed with. Parameters Type Name Default Value Description String mateType The entity definition of this entity's mate String babyType The entity definition of this entity's babies String breed_event Event to run when this entity breeds Boolean causes_pregnancy false If true, the entity will become pregnant instead of spawning a baby. Minecraft Filter love_filters The filters to run when attempting to fall in love. minecraft:bribeable Defines the way an entity can get into the 'bribed' state. Parameters Type Name Default Value Description Decimal bribe_cooldown 2.0 Time in seconds before the Entity can be bribed again List bribe_items The list of items that can be used to bribe the entity minecraft:inventory Defines this entity's inventory properties. Parameters Type Name Default Value Description String container_type none Type of container this entity has. Can be horse, minecart_chest, minecart_hopper, inventory, container or hopper Integer inventory_size 5 Number of slots the container has Boolean can_be_siphoned_from false If true, the contents of this inventory can be removed by a hopper Boolean private false If true, only the entity can access the inventory Boolean restrict_to_owner false If true, the entity's inventory can only be accessed by its owner or itself Integer additional_slots_per_strength 0 Number of slots that this entity can gain per extra strength minecraft:damage_over_time Applies defined amount of damage to the entity at specified intervals. Parameters Type Name Default Value Description Integer damagePerHurt 1 Amount of damage caused each hurt Integer timeBetweenHurt 0 Time in seconds between damage minecraft:damage_sensor Defines what events to call when this entity is damaged by specific entities or items. Can be either an array or a single instance. Parameters Type Name Default Value Description List on_damage List of triggers with the events to call when taking this specific kind of damage, allows specifying filters for entity definitions and events Boolean deals_damage true If true, the damage dealt to the entity will take away health from it, set to false to make the entity ignore that damage String cause Type of damage that triggers this set of events minecraft:despawn Despawns the associated Actor immediately or when the optional filter evaluates to true. Parameters Type Name Default Value Description Minecraft Filter filters The list of conditions that must be satisfied before the Actor is despawned Boolean remove_child_entities false If true, all entities linked to this entity in a child relationship (e.g. leashed) will also be despawned minecraft:environment_sensor Creates a trigger based on environment conditions. Parameters Type Name Default Value Description List on_environment The list of triggers that fire when the environment conditions match the given filter criteria. minecraft:equippable Defines an entity's behavior for having items equipped to it. Parameters Type Name Default Value Description List slots List of slots and the item that can be equipped Parameters Type Name Default Value Description Integer slot 0 The slot number of this slot List accepted_items The list of items that can go in this slot String item Identifier of the item that can be equipped for this slot String interact_text Text to be displayed when the entity can be equipped with this item when playing with Touch-screen controls String on_equip Event to trigger when this entity is equipped with this item String on_unequip Event to trigger when this item is removed from this entity minecraft:explode Defines how the entity explodes. Parameters Type Name Default Value Description Range [a, b] fuseLength [0.0, 0.0] The range for the random amount of time the fuse will be lit before exploding, a negative value means the explosion will be immediate Decimal power 3.0 The radius of the explosion in blocks and the amount of damage the explosion deals Decimal maxResistance Infinite A blocks explosion resistance will be capped at this value when an explosion occurs Boolean fuseLit false If true, the fuse is already lit when this component is added to the entity Boolean causesFire false If true, blocks in the explosion radius will be set on fire Boolean breaks_blocks true If true, the explosion will destroy blocks in the explosion radius Boolean fireAffectedByGriefing false If true, whether the explosion causes fire is affected by the mob griefing game rule Boolean destroyAffectedByGriefing false If true, whether the explosion breaks blocks is affected by the mob griefing game rule minecraft:navigation.float Allows this entity to generate paths by flying around the air like the regular ghast. Parameters Type Name Default Value Description Boolean can_path_over_water false Tells the pathfinder whether or not it can travel on the surface of the water Boolean can_sink true Tells the pathfinder whether or not it will be pulled down by gravity while in water Boolean avoid_sun false Whether or not the pathfinder should avoid tiles that are exposed to the sun when creating paths Boolean can_pass_doors true Whether a path can be created through a door Boolean can_open_doors false Tells the pathfinder that it can path through a closed door assuming the AI will open the door Boolean can_break_doors false Tells the pathfinder that it can path through a closed door and break it Boolean avoid_water false Tells the pathfinder to avoid water when creating a path Boolean avoid_portals false Tells the pathfinder to avoid portals (like nether portals) when finding a path minecraft:navigation.generic Allows this entity to generate paths by walking, swimming, flying and/or climbing around and jumping up and down a block. Parameters Type Name Default Value Description Boolean can_path_over_water false Tells the pathfinder whether or not it can travel on the surface of the water Boolean can_sink true Tells the pathfinder whether or not it will be pulled down by gravity while in water Boolean avoid_sun false Whether or not the pathfinder should avoid tiles that are exposed to the sun when creating paths Boolean can_pass_doors true Whether a path can be created through a door Boolean can_open_doors false Tells the pathfinder that it can path through a closed door assuming the AI will open the door Boolean can_break_doors false Tells the pathfinder that it can path through a closed door and break it Boolean avoid_water false Tells the pathfinder to avoid water when creating a path Boolean avoid_portals false Tells the pathfinder to avoid portals (like nether portals) when finding a path minecraft:healable Defines the interactions with this entity for healing it. Parameters Type Name Default Value Description Array items The array of items that can be used to heal this entity Parameters Type Name Default Value Description String item Item identifier that can be used to heal this entity Integer heal_amount 1 The amount of health this entity gains when fed this item Minecraft Filter filters The filter group that defines the conditions for using this item to heal the entity Boolean force_use false Determines if item can be used regardless of entity being at full health Minecraft Filter filters The filter group that defines the conditions for this trigger minecraft:hurt_when_wet Specifies if an actor is hurt when wet. minecraft:ravager_blocked Defines the ravager's response to their melee attack being blocked. Parameters Type Name Default Value Description List reaction_choices [ ] A list of weighted responses to the melee attack being blocked Decimal knockback_strength 3.0 The strength with which blocking entities should be knocked back minecraft:insomnia Adds a timer since last rested to see if phantoms should spawn. Parameters Type Name Default Value Description Decimal days_until_insomnia 3.0 Number of days the mob has to stay up until the insomnia effect begins. minecraft:genetics Defines the way a mob's genes and alleles are passed on to its offspring, and how those traits manifest in the child. Compatible parent genes are crossed together, the alleles are handed down from the parents to the child, and any matching genetic variants fire off JSON events to modify the child and express the traits. Parameters Type Name Default Value Description Decimal mutation_rate 0.03125 Chance that an allele will be replaced with a random one instead of the parent's allele during birth. List genes The list of genes that this entity has and will cross with a partner during breeding. Parameters Type Name Default Value Description String name The name of the gene. Integer allele_range The range of positive integer allele values for this gene. Spawned mobs will have a random number in this range assigned to them. Parameters Type Name Default Value Description Integer range_min 0 Lower bound of the allele values for this gene. Integer range_max 0 Upper bound of the allele values for this gene. List genetic_variants The list of genetic variants for this gene. These check for particular allele combinations and fire events when all of them are satisfied. Parameters Type Name Default Value Description Integer main_allele -1 If this value is non-negative, compare the mob's main allele with this value for a match. Can also be a range of integers. Integer hidden_allele -1 If this value is non-negative, compare the mob's hidden allele with this value for a match. Can also be a range of integers. Integer either_allele -1 If this value is non-negative, compare both the mob's main and hidden alleles with this value for a match with either. Can also be a range of integers. Integer both_allele -1 If this value is non-negative, compare both the mob's main and hidden alleles with this value for a match with both. Can also be a range of integers. String birth_event Event to run when this mob is created and matches the above allele conditions. minecraft:giveable Defines sets of items that can be used to trigger events when used on this entity. The item will also be taken and placed in the entity's inventory. Parameters Type Name Default Value Description Decimal cooldown 0.0 An optional cool down in seconds to prevent spamming interactions. List items The list of items that can be given to the entity to place in their inventory. String on_give Event to fire when the correct item is given. minecraft:interact Defines interactions with this entity. Parameters Type Name Default Value Description Decimal cooldown 0.0 Time in seconds before this entity can be interacted with again Boolean swing false If true, the player will do the 'swing' animation when interacting with this entity Boolean use_item false If true, the interaction will use an item Integer hurt_item 0 The amount of damage the item will take when used to interact with this entity. A value of 0 means the item won't lose durability String interact_text Text to show when the player is able to interact in this way with this entity when playing with Touch-screen controls JSON Object add_items Loot table with items to add to the player's inventory upon successful interaction Parameters Type Name Default Value Description String table File path, relative to the Behavior Pack's path, to the loot table file JSON Object spawn_items Loot table with items to drop on the ground upon successful interaction Parameters Type Name Default Value Description String table File path, relative to the Behavior Pack's path, to the loot table file String transform_to_item The item used will transform to this item upon successful interaction. Format: itemName:auxValue String play_sounds List of sounds to play when the interaction occurs String spawn_entities List of entities to spawn when the interaction occurs String on_interact Event to fire when the interaction occurs JSON Object particle_on_start Particle effect that will be triggered at the start of the interaction particle_type The type of particle that will be spawned particle_y_offset Will offset the particle this amount in the y direction particle_offset_towards_interactor Whether or not the particle will appear closer to who performed the interaction minecraft:leashable Allows this entity to be leashed and defines the conditions and events for this entity when is leashed. Parameters Type Name Default Value Description Decimal soft_distance 4.0 Distance in blocks at which the 'spring' effect starts acting to keep this entity close to the entity that leashed it Decimal hard_distance 6.0 Distance in blocks at which the leash stiffens, restricting movement Decimal max_distance 10.0 Distance in blocks at which the leash breaks String on_leash Event to call when this entity is leashed String on_unleash Event to call when this entity is unleashed Boolean can_be_stolen false If true, players can leash this entity even if it is already leashed to another mob minecraft:lookat Defines the behavior when another entity looks at this entity. Parameters Type Name Default Value Description Boolean setTarget true If true, this entity will set the attack target as the entity that looked at it Decimal searchRadius 10.0 Maximum distance this entity will look for another entity looking at it Boolean mAllowInvulnerable false If true, invulnerable entities (e.g. Players in creative mode) are considered valid targets Range [a, b] look_cooldown [0.0, 0.0] The range for the random amount of time during which the entity is 'cooling down' and won't get angered or look for a target Minecraft Filter filters player Defines the entities that can trigger this component String look_event The event identifier to run when the entities specified in filters look at this entity minecraft:managed_wandering_trader This component is used to implement a part of the wandering trader behavior. minecraft:tamemount Allows the entity to be tamed by mounting it. Parameters Type Name Default Value Description Integer minTemper 0 The minimum value for the entity's random starting temper Integer maxTemper 100 The maximum value for the entity's random starting temper String feed_text The text that shows in the feeding interact button String ride_text The text that shows in the riding interact button Integer attemptTemperMod 5 The amount the entity's temper will increase when mounted JSON Object feedItems The list of items that can be used to increase the entity's temper and speed up the taming process Parameters Type Name Default Value Description String item Name of the item this entity likes and can be used to increase this entity's temper Decimal temperMod 0.0 The amount of temper this entity gains when fed this item JSON Object autoRejectItems The list of items that, if carried while interacting with the entity, will anger it Parameters Type Name Default Value Description String item Name of the item this entity dislikes and will cause it to get angry if used while untamed String tame_event Event that triggers when the entity becomes tamed minecraft:movement.sway This move control causes the mob to sway side to side giving the impression it is swimming. Parameters Type Name Default Value Description Decimal max_turn 30.0 The maximum number in degrees the mob can turn per tick. minecraft:movement.generic This move control allows a mob to fly, swim, climb, etc. Parameters Type Name Default Value Description Decimal max_turn 30.0 The maximum number in degrees the mob can turn per tick. minecraft:movement.skip This move control causes the mob to hop as it moves. Parameters Type Name Default Value Description Decimal max_turn 30.0 The maximum number in degrees the mob can turn per tick. minecraft:movement.fly This move control causes the mob to fly. Parameters Type Name Default Value Description Decimal max_turn 30.0 The maximum number in degrees the mob can turn per tick. minecraft:movement.amphibious This move control allows the mob to swim in water and walk on land. Parameters Type Name Default Value Description Decimal max_turn 30.0 The maximum number in degrees the mob can turn per tick. minecraft:nameable Allows this entity to be named (e.g. using a name tag). Parameters Type Name Default Value Description JSON Object name_actions Describes the special names for this entity and the events to call when the entity acquires those names Parameters Type Name Default Value Description String on_named Event to be called when this entity acquires the name specified in 'name_filter' String name_filter List of special names that will cause the events defined in 'on_named' to fire String default_trigger Trigger to run when the entity gets named Boolean alwaysShow false If true, the name will always be shown Boolean allowNameTagRenaming true If true, this entity can be renamed with name tags minecraft:navigation.walk Allows this entity to generate paths by walking around and jumping up and down a block like regular mobs. Parameters Type Name Default Value Description Boolean can_path_over_water false Tells the pathfinder whether or not it can travel on the surface of the water Boolean can_sink true Tells the pathfinder whether or not it will be pulled down by gravity while in water Boolean avoid_sun false Whether or not the pathfinder should avoid tiles that are exposed to the sun when creating paths Boolean can_pass_doors true Whether a path can be created through a door Boolean can_open_doors false Tells the pathfinder that it can path through a closed door assuming the AI will open the door Boolean can_break_doors false Tells the pathfinder that it can path through a closed door and break it Boolean avoid_water false Tells the pathfinder to avoid water when creating a path Boolean avoid_portals false Tells the pathfinder to avoid portals (like nether portals) when finding a path minecraft:peek Defines the entity's 'peek' behavior, defining the events that should be called during it. Parameters Type Name Default Value Description String on_open Event to call when the entity starts peeking String on_close Event to call when the entity is done peeking String on_target_open Event to call when the entity's target entity starts peeking minecraft:preferred_path Specifies costing information for mobs that prefer to walk on preferred paths. Parameters Type Name Default Value Description Integer max_fall_blocks 3 Distance mob can fall without taking damage Integer jump_cost 0 Added cost for jumping up a node Decimal default_block_cost 0 Cost for non-preferred blocks List preferred_path_blocks A list of blocks with their associated cost minecraft:projectile Allows the entity to be a thrown entity. Parameters Type Name Default Value Description Decimal gravity 0.05 The gravity applied to this entity when thrown. The higher the value, the faster the entity falls String particle iconcrack Particle to use upon collision Boolean reflectOnHurt false If true, this entity will be reflected back when hit Boolean destroyOnHurt false If true, this entity will be destroyed when hit Vector [a, b, c] offset [0.0, 0.5, 0.0] The offset from the entity's anchor where the projectile will spawn Decimal power 1.3 Determines the velocity of the projectile Decimal angleoffset 0.0 Determines the angle at which the projectile is thrown Decimal uncertaintyBase 0.0 The base accuracy. Accuracy is determined by the formula uncertaintyBase - difficultyLevel * uncertaintyMultiplier Decimal uncertaintyMultiplier 0.0 Determines how much difficulty affects accuracy. Accuracy is determined by the formula uncertaintyBase - difficultyLevel * uncertaintyMultiplier Boolean critParticleOnHurt false If true, the projectile will produce additional particles when a critical hit happens Boolean knockback true If true, the projectile will knock back the entity it hits String filter Entity Definitions defined here can't be hurt by the projectile Boolean semirandomdiffdamage false If true, damage will be randomized based on damage and speed Decimal onFireTime 5.0 Time in seconds that the entity hit will be on fire for Boolean catchFire false If true, the entity hit will be set on fire Boolean lightning false If true, the entity hit will be struck by lightning Boolean fireAffectedByGriefing false If true, whether the projectile causes fire is affected by the mob griefing game rule Integer potionEffect -1 Defines the effect the arrow will apply to the entity it hits Decimal splashRange 4.0 Radius in blocks of the 'splash' effect Boolean splashPotion false If true, the projectile will be treated like a splash potion Boolean isdangerous false If true, the projectile will be treated as dangerous to the players Boolean shoottarget true If true, the projectile will be shot towards the target of the entity firing it String shootSound The sound that plays when the projectile is shot String hitSound The sound that plays when the projectile hits something Decimal inertia 0.99 The fraction of the projectile's speed maintained every frame while traveling in air Decimal liquid_inertia 0.6 The fraction of the projectile's speed maintained every frame while traveling in water Boolean homing false If true, the projectile homes in to the nearest entity Boolean shouldbounce false If true, the projectile will bounce upon hit Boolean multipletargets true If true, the projectile can hit multiple entities per flight minecraft:raid_trigger Attempts to trigger a raid at the entity's location. Parameters Type Name Default Value Description String triggered_event Event to run we attempt to trigger a raid on the village. minecraft:rail_sensor Defines the behavior of the entity when the rail gets activated or deactivated. Parameters Type Name Default Value Description Boolean check_block_types false If true, on tick this entity will trigger its on_deactivate behavior Boolean tick_command_block_on_activate true If true, command blocks will start ticking when passing over an activated rail Boolean tick_command_block_on_deactivate false If false, command blocks will stop ticking when passing over a deactivated rail Boolean eject_on_activate true If true, this entity will eject all of its riders when it passes over an activated rail Boolean eject_on_deactivate false If true, this entity will eject all of its riders when it passes over a deactivated rail String on_activate Event to call when the rail is activated String on_deactivate Event to call when the rail is deactivated minecraft:rail_movement Defines the entity's movement on the rails. An entity with this component is only allowed to move on the rail. Parameters Type Name Default Value Description Decimal max_speed 0.4 Maximum speed that this entity will move at when on the rail minecraft:rideable Determines whether this entity can be ridden. Allows specifying the different seat positions and quantity. Parameters Type Name Default Value Description Integer seat_count 1 The number of entities that can ride this entity at the same time Boolean crouching_skip_interact true If true, this entity can't be interacted with if the entity interacting with it is crouching String interact_text The text to display when the player can interact with the entity when playing with Touch-screen controls List family_types List of entities that can ride this entity Integer controlling_seat 0 The seat that designates the driver of the entity Boolean pull_in_entities false If true, this entity will pull in entities that are in the correct family_types into any available seats Boolean rider_can_interact false If true, this entity will be picked when looked at by the rider List seats The list of positions and number of riders for each position for entities riding this entity Parameters Type Name Default Value Description Vector [a, b, c] position [0.0, 0.0, 0.0] Position of this seat relative to this entity's position Integer min_rider_count 0 Defines the minimum number of riders that need to be riding this entity before this seat can be used Integer max_rider_count 0 Defines the maximum number of riders that can be riding this entity for this seat to be valid Decimal rotate_rider_by 0.0 Offset to rotate riders by Decimal lock_rider_rotation 181.0 Angle in degrees that a rider is allowed to rotate while riding this entity. Omit this property for no limit minecraft:scale_by_age Defines the entity's size interpolation based on the entity's age. Parameters Type Name Default Value Description Decimal start_scale 1.0 Initial scale of the newborn entity Decimal end_scale 1.0 Ending scale of the entity when it's fully grown minecraft:sittable Defines the entity's 'sit' state. Parameters Type Name Default Value Description String sit_event Event to run when the entity enters the 'sit' state String stand_event Event to run when the entity exits the 'sit' state minecraft:movement.jump Move control that causes the mob to jump as it moves with a specified delay between jumps. Parameters Type Name Default Value Description Decimal max_turn 30.0 The maximum number in degrees the mob can turn per tick. Range [a, b] jump_delay [0.0, 0.0] Delay after landing when using the slime move control. minecraft:movement.basic This component accents the movement of an entity. Parameters Type Name Default Value Description Decimal max_turn 30.0 The maximum number in degrees the mob can turn per tick. minecraft:spawn_entity Adds a timer after which this entity will spawn another entity or item (similar to vanilla's chicken's egg-laying behavior). Parameters Type Name Default Value Description Boolean should_leash false If true, this the spawned entity will be leashed to the parent Integer num_to_spawn 1 The number of entities of this type to spawn each time that this triggers Integer min_wait_time 300 Minimum amount of time to randomly wait in seconds before another entity is spawned Integer max_wait_time 600 Maximum amount of time to randomly wait in seconds before another entity is spawned String spawn_sound plop Identifier of the sound effect to play when the entity is spawned String spawn_item egg Item identifier of the item to spawn String spawn_entity Identifier of the entity to spawn, leave empty to spawn the item defined above instead String spawn_method born Method to use to spawn the entity String spawn_event minecraft:entity_born Event to call when the entity is spawned Minecraft Filter filters If present, the specified entity will only spawn if the filter evaluates to true Boolean single_use false If true, this component will only ever spawn the specified entity once minecraft:shareables Defines a list of items the mob wants to share. Each item must have the following parameters: Parameters Type Name Default Value Description List items List of items that the entity wants to share item The name of the item want_amount Number of this item this entity wants to share surplus_amount Number of this item considered extra that the entity wants to share craft_into Defines the item this entity wants to craft with the item defined above. Should be an item name minecraft:shooter Defines the entity's ranged attack behavior. Parameters Type Name Default Value Description String def Actor definition to use as projectile for the ranged attack. The actor definition must have the projectile component to be able to be shot as a projectile Integer auxVal -1 ID of the Potion effect to be applied on hit minecraft:tameable Defines the rules for a mob to be tamed by the player. Parameters Type Name Default Value Description Decimal probability 1.0 The chance of taming the entity with each item use between 0.0 and 1.0, where 1.0 is 100% List tameItems The list of items that can be used to tame this entity String tame_event Event to run when this entity becomes tamed minecraft:target_nearby_sensor Defines the entity's range within which it can see or sense other entities to target them. Parameters Type Name Default Value Description Decimal inside_range 1.0 Maximum distance in blocks that another entity will be considered in the 'inside' range Decimal outside_range 5.0 Maximum distance in blocks that another entity will be considered in the 'outside' range String on_inside_range Event to call when an entity gets in the inside range. Can specify 'event' for the name of the event and 'target' for the target of the event String on_outside_range Event to call when an entity gets in the outside range. Can specify 'event' for the name of the event and 'target' for the target of the event minecraft:teleport Defines an entity's teleporting behavior. Parameters Type Name Default Value Description Boolean randomTeleports true If true, the entity will teleport randomly Decimal minRandomTeleportTime 0.0 Minimum amount of time in seconds between random teleports Decimal maxRandomTeleportTime 20.0 Maximum amount of time in seconds between random teleports Vector [a, b, c] randomTeleportCube [32.0, 16.0, 32.0] Entity will teleport to a random position within the area defined by this cube Decimal targetDistance 16.0 Maximum distance the entity will teleport when chasing a target Decimal target_teleport_chance 1.0 The chance that the entity will teleport between 0.0 and 1.0. 1.0 means 100% Decimal lightTeleportChance 0.01 Modifies the chance that the entity will teleport if the entity is in daylight Decimal darkTeleportChance 0.01 Modifies the chance that the entity will teleport if the entity is in darkness minecraft:tick_world Defines if the entity ticks the world and the radius around it to tick. Parameters Type Name Default Value Description Positive Integer radius 2 The area around the entity to tick. Default: 2. Allowed range: 2-6. Decimal distance_to_players 128 The distance at which the closest player has to be before this entity despawns. This option will be ignored if never_despawn is true. Min: 128 blocks. Boolean never_despawn true If true, this entity will not despawn even if players are far away. If false, distance_to_players will be used to determine when to despawn. minecraft:timer Adds a timer after which an event will fire. Parameters Type Name Default Value Description Boolean looping true If true, the timer will restart every time after it fires Boolean randomInterval true If true, the amount of time on the timer will be random between the min and max values specified in time Range [a, b] time [0.0, 0.0] Amount of time in seconds for the timer. Can be specified as a number or a pair of numbers (min and max). Incompatible with random_time_choices. String time_down_event Event to fire when the time on the timer runs out List random_time_choices [ ] This is a list of objects, representing one value in seconds that can be picked before firing the event and an optional weight. Incompatible with time. minecraft:economy_trade_table Defines this entity's ability to trade with players. Parameters Type Name Default Value Description String display_name Name to be displayed while trading with this entity String table File path relative to the resource pack root for this entity's trades Boolean new_screen false Used to determine if trading with entity opens the new trade screen Integer hero_demand_discount -4 How much should Demand be modified by when the player has the Hero of the Village mob effect Boolean persist_trades false Determines if the trades should persist when the mob transforms. This makes it so that the next time the mob is transformed into something with a trade_table or economy_trade_table, then it keeps their trades. Boolean convert_trades_economy false Determines when the mob transforms, if the trades should be converted when the new mob has an economy_trade_table. When the trades are converted, the mob will generate a new trade list with their new trade table, but then it will try to convert any of the same trades over to have the same enchantments and user data. For example, if the original has an emerald to an enchanted iron sword (Sharpness 1), and the new trade also has an emerald for an enchanted iron sword, then the enchantment will be Sharpness 1. minecraft:trade_table Defines this entity's ability to trade with players. Parameters Type Name Default Value Description String display_name Name to be displayed while trading with this entity String table File path relative to the resource pack root for this entity's trades Boolean new_screen false Used to determine if trading with entity opens the new trade screen Boolean persist_trades false Determines if the trades should persist when the mob transforms. This makes it so that the next time the mob is transformed to something with a trade_table or economy_trade_table, then it keeps their trades. Boolean convert_trades_economy false Determines when the mob transforms, if the trades should be converted when the new mob has an economy_trade_table. When the trades are converted, the mob will generate a new trade list with their new trade table, but then it will try to convert any of the same trades over to have the same enchantments and user data. For example, if the original has an emerald to an enchanted iron sword (Sharpness 1), and the new trade also has an emerald for an enchanted iron sword, then the enchantment will be Sharpness 1. minecraft:transformation Defines an entity's transformation from the current definition into another. Parameters Type Name Default Value Description String begin_transform_sound Sound to play when the transformation starts String transformation_sound Sound to play when the entity is done transforming String into Entity Definition that this entity will transform into Boolean drop_equipment Cause the entity to drop all equipment upon transformation Boolean keep_owner If this entity is owned by another entity, it should remain owned after transformation. Boolean keep_level If this entity has trades and has leveled up, it should maintain that level after transformation. JSON Object add List of components to add to the entity after the transformation Parameters Type Name Default Value Description List component_groups Names of component groups to add JSON Object delay Defines the properties of the delay for the transformation Parameters Type Name Default Value Description Decimal value 0.0 Time in seconds before the entity transforms Decimal block_assist_chance 0.0 Chance that the entity will look for nearby blocks that can speed up the transformation. Value must be between 0.0 and 1.0 Integer block_radius 0 Distance in Blocks that the entity will search for blocks that can help the transformation Integer block_max 0 Maximum number of blocks the entity will look for to aid in the transformation. If not defined or set to 0, it will be set to the block radius Decimal block_chance 0.0 Chance that, once a block is found, will help speed up the transformation List block_types List of blocks that can help the transformation of this entity minecraft:trusting Defines the rules for a mob to trust players. Parameters Type Name Default Value Description Decimal probability 1.0 The chance of the entity trusting with each item use between 0.0 and 1.0, where 1.0 is 100% List trust_items The list of items that can be used to get the entity to trust players String trust_event Event to run when this entity becomes trusting minecraft:navigation.climb Allows this entity to generate paths that include vertical walls like the vanilla spiders do. Parameters Type Name Default Value Description Boolean can_path_over_water false Tells the pathfinder whether or not it can travel on the surface of the water Boolean can_sink true Tells the pathfinder whether or not it will be pulled down by gravity while in water Boolean avoid_sun false Whether or not the pathfinder should avoid tiles that are exposed to the sun when creating paths Boolean can_pass_doors true Whether a path can be created through a door Boolean can_open_doors false Tells the pathfinder that it can path through a closed door assuming the AI will open the door Boolean can_break_doors false Tells the pathfinder that it can path through a closed door and break it Boolean avoid_water false Tells the pathfinder to avoid water when creating a path Boolean avoid_portals false Tells the pathfinder to avoid portals (like nether portals) when finding a path minecraft:navigation.swim Allows this entity to generate paths that include water. Parameters Type Name Default Value Description Boolean can_path_over_water false Tells the pathfinder whether or not it can travel on the surface of the water Boolean can_sink true Tells the pathfinder whether or not it will be pulled down by gravity while in water Boolean avoid_sun false Whether or not the pathfinder should avoid tiles that are exposed to the sun when creating paths Boolean can_pass_doors true Whether a path can be created through a door Boolean can_open_doors false Tells the pathfinder that it can path through a closed door assuming the AI will open the door Boolean can_break_doors false Tells the pathfinder that it can path through a closed door and break it Boolean avoid_water false Tells the pathfinder to avoid water when creating a path Boolean avoid_portals false Tells the pathfinder to avoid portals (like nether portals) when finding a path minecraft:water_movement Parameters Type Name Default Value Description Decimal drag_factor 0.8 Drag factor to determine movement speed when in water. minecraft:jump.dynamic Defines a dynamic type jump control that will change jump properties based on the speed modifier of the mob. minecraft:item_hopper Determines that this entity is an item hopper. minecraft:jump.static Gives the entity the ability to jump. Parameters Type Name Default Value Description Decimal jump_power 0.42 The initial vertical velocity for the jump minecraft:navigation.fly Allows this entity to generate paths in the air like the vanilla parrots do. Parameters Type Name Default Value Description Boolean can_path_over_water false Tells the pathfinder whether or not it can travel on the surface of the water Boolean can_sink true Tells the pathfinder whether or not it will be pulled down by gravity while in water Boolean avoid_sun false Whether or not the pathfinder should avoid tiles that are exposed to the sun when creating paths Boolean can_pass_doors true Whether a path can be created through a door Boolean can_open_doors false Tells the pathfinder that it can path through a closed door assuming the AI will open the door Boolean can_break_doors false Tells the pathfinder that it can path through a closed door and break it Boolean avoid_water false Tells the pathfinder to avoid water when creating a path Boolean avoid_portals false Tells the pathfinder to avoid portals (like nether portals) when finding a path minecraft:scaffolding_climber Allows the player to detect and manuever on the scaffolding block. minecraft:scheduler fires off scheduled mob events at time of day events. Parameters Type Name Default Value Description List scheduled_event The list of triggers that fire when the conditions match the given filter criteria. If any filter criteria overlap the first defined event will be picked minecraft:annotation.open_door Allows the actor to open doors assuming that that flags set up for the component to use in navigation. minecraft:is_illager_captain Sets that this entity is an illager captain. minecraft:break_blocks Specifies the blocks that this entity can break as it moves around. Parameters Type Name Default Value Description List breakable_blocks A list of the blocks that can be broken as this entity moves around Triggers minecraft:on_death Only usable by the ender dragon. Adds a trigger to call on this entity's death. Parameters Type Name Default Value Description String event The event to run when the conditions for this trigger are met String target self The target of the event Minecraft Filter filters The list of conditions for this trigger minecraft:on_friendly_anger Adds a trigger that will run when a nearby entity of the same type as this entity becomes angry. Parameters Type Name Default Value Description String event The event to run when the conditions for this trigger are met String target self The target of the event Minecraft Filter filters The list of conditions for this trigger minecraft:on_hurt Adds a trigger to call when this entity takes damage. Parameters Type Name Default Value Description String event The event to run when the conditions for this trigger are met String target self The target of the event Minecraft Filter filters The list of conditions for this trigger minecraft:on_hurt_by_player Adds a trigger to call when this entity is attacked by the player. Parameters Type Name Default Value Description String event The event to run when the conditions for this trigger are met String target self The target of the event Minecraft Filter filters The list of conditions for this trigger minecraft:on_ignite Adds a trigger to call when this entity is set on fire. Parameters Type Name Default Value Description String event The event to run when the conditions for this trigger are met String target self The target of the event Minecraft Filter filters The list of conditions for this trigger minecraft:on_start_landing Only usable by the ender dragon. Adds a trigger to call when this entity lands. Parameters Type Name Default Value Description String event The event to run when the conditions for this trigger are met String target self The target of the event Minecraft Filter filters The list of conditions for this trigger minecraft:on_start_takeoff Only usable by the ender dragon. Adds a trigger to call when this entity starts flying. Parameters Type Name Default Value Description String event The event to run when the conditions for this trigger are met String target self The target of the event Minecraft Filter filters The list of conditions for this trigger minecraft:on_target_acquired Adds a trigger to call when this entity finds a target. Parameters Type Name Default Value Description String event The event to run when the conditions for this trigger are met String target self The target of the event Minecraft Filter filters The list of conditions for this trigger minecraft:on_target_escape Adds a trigger to call when this entity loses the target it currently has. Parameters Type Name Default Value Description String event The event to run when the conditions for this trigger are met String target self The target of the event Minecraft Filter filters The list of conditions for this trigger minecraft:on_wake_with_owner Adds a trigger to call when this pet's owner awakes after sleeping with the pet. Parameters Type Name Default Value Description String event The event to run when the conditions for this trigger are met String target self The target of the event Minecraft Filter filters The list of conditions for this trigger Built-in Events Parameters Name Description minecraft:entity_transformed Event called on an entity that transforms into another entity. minecraft:entity_born Event called on an entity that is spawned through two entities breeding. minecraft:entity_spawned Event called on an entity that is placed in the level. minecraft:on_prime Event called on an entity whose fuse is lit and is ready to explode. ID Lists Entity Description Properties Parameters JSON Name ID animations 0 scripts 0 Attributes Parameters JSON Name ID minecraft:attack 1651346034 minecraft:spell_effects 523264365 minecraft:strength 648564399 Properties Parameters JSON Name ID minecraft:ambient_sound_interval -1314051310 minecraft:can_climb -550459594 minecraft:can_fly 985724318 minecraft:can_power_jump -763124853 minecraft:collision_box -1277663508 minecraft:color 1069623177 minecraft:color2 0 minecraft:default_look_angle -815556357 minecraft:is_dyeable 1381448355 minecraft:equipment 714661022 minecraft:fire_immune -1071767182 minecraft:type_family -255011285 minecraft:floats_in_liquid 179778474 minecraft:flying_speed -570508595 minecraft:foot_size 1133270874 minecraft:friction_modifier -714364556 minecraft:ground_offset -1816881803 minecraft:is_baby 1853172763 minecraft:is_charged 125340337 minecraft:is_chested -817599379 minecraft:is_hidden_when_invisible -1553744 minecraft:is_ignited 905710223 minecraft:is_saddled 1037901616 minecraft:is_shaking 523951884 minecraft:is_sheared 1154836813 minecraft:is_illager_captain 0 minecraft:is_stunned 0 minecraft:is_stackable 1184456737 minecraft:is_tamed 1646421078 minecraft:item_controllable 1868311069 minecraft:loot 1775814032 minecraft:push_through -138030768 minecraft:scale 77854436 minecraft:skin_id 1838729593 minecraft:sound_volume 937951776 minecraft:variant -1789583977 minecraft:mark_variant 663621689 minecraft:walk_animation_speed 972393614 minecraft:wants_jockey 1832515141 minecraft:input_ground_controlled -646415617 minecraft:is_illager_captain 0 Components Parameters JSON Name ID minecraft:burns_in_daylight 1256874605 minecraft:hurt_when_wet 237531867 minecraft:addrider -1014528905 minecraft:ageable 1092934985 minecraft:angry 725411499 minecraft:boostable -8316315 minecraft:annotation.break_door 0 minecraft:breathable -707187232 minecraft:burns_in_daylight 1256874605 minecraft:breedable -1616430100 minecraft:bribeable 0 0 minecraft:inventory 1941951218 minecraft:damage_over_time 0 minecraft:damage_sensor -82616534 minecraft:despawn 0 minecraft:environment_sensor 687748970 minecraft:equippable -1164142226 minecraft:explode -1683058581 minecraft:navigation.float -842998036 minecraft:navigation.generic 0 minecraft:healable -54247424 minecraft:hurt_when_wet 237531867 minecraft:ravager_blocked 0 minecraft:insomnia -300455606 minecraft:genetics -82484670 minecraft:giveable 1739199795 minecraft:interact -1996861528 minecraft:leashable 893445039 minecraft:lookat -1329707008 minecraft:managed_wandering_trader 0 minecraft:tamemount 1615660288 minecraft:movement.sway 0 minecraft:movement.generic 0 minecraft:movement.skip -1828832272 minecraft:movement.fly -1487316136 minecraft:movement.amphibious 0 minecraft:nameable -595398763 minecraft:navigation.walk 1909033775 minecraft:peek -863721039 minecraft:preferred_path 0 minecraft:projectile 1922456869 minecraft:raid_trigger 2093209329 minecraft:rail_sensor 1273161273 minecraft:rail_movement -78235634 minecraft:rideable 1656173828 minecraft:scale_by_age 64881972 minecraft:sittable -1376274106 minecraft:movement.jump 1256268727 minecraft:movement.basic 3354475 minecraft:spawn_entity 1991964333 minecraft:shareables 1301057082 minecraft:shooter 184150118 minecraft:tameable 932870003 minecraft:target_nearby_sensor 1309819882 minecraft:teleport -1900891127 minecraft:tick_world -381759296 minecraft:timer 1862095863 minecraft:economy_trade_table 0 minecraft:trade_table 50480315 minecraft:transformation -457894577 minecraft:trusting 936499892 minecraft:navigation.climb -1075360945 minecraft:navigation.swim 1908076634 minecraft:water_movement 0 0 minecraft:jump.dynamic 945664737 minecraft:item_hopper -447601772 minecraft:jump.static 1064987526 minecraft:navigation.fly -1997823129 minecraft:scaffolding_climber 169799877 minecraft:scheduler -684492525 minecraft:annotation.open_door 0 minecraft:break_blocks 0 Triggers Parameters JSON Name ID minecraft:on_death -49357854 minecraft:on_friendly_anger -1009986313 minecraft:on_hurt -1028603471 minecraft:on_hurt_by_player -599009831 minecraft:on_ignite -1911489054 minecraft:on_start_landing -555648368 minecraft:on_start_takeoff 426083399 minecraft:on_target_acquired 1063277906 minecraft:on_target_escape -1373130027 minecraft:on_wake_with_owner -1543219003 Data-Driven Spawning Data-Driven spawning allows you to adjust the spawn conditions of mobs, including new mobs added to the game to spawn naturally in biomes, add / remove a mob's spawn egg to the creative inventory and set the mob's spawn egg, and add/remove a to the / summon command. Spawn Rules Getting Started New Spawn Rules are contained within a Behavior Pack. To begin, create a new folder named "spawn_rules" in the root of the Behavior Pack that you want to add the new biome spawn rules in. In the spawn_rules folder, create a JSON file and give it a name. The JSON file needs a format, description and conditions. Spawn rules contain descriptions and conditions. All Spawn Rules JSON needs to have an ID (located under the description section). Similar to other identifiers, it follows the convention "namespace:name". The Minecraft namespace is reserved for the vanilla Minecraft rules. When changing an existing mob use the ID that appears in the entity JSON for that entity. When creating your own mob, make sure the mobs have the same ID in all the entity's JSON files. Spawn Rules also need to define the pool that is used for population control. Each pool has their own spawn limit, By setting an entity to a pool it will spawn as long as that pool hasn't reached the spawn limit. There are 3 pools that entities can be assigned to : -animal -water_animal -monster. Conditions Conditions contain different components that players can use to customize natural biome spawning. Components Name Description minecraft:spawns_on_surface This component allows the mob to spawn on the ground. Adding the component causes it to be true, removing it causes the mob to stop spawning on the surface. minecraft:spawns_underground This component allows the mob to spawn underground. Adding the component causes it to be true, removing it causes the mob to stop spawning underground. minecraft:spawns_underwater This component allows the mob to spawn underwater. Adding the component causes it to be true, removing it causes the mob to stop spawning underwater. minecraft:brightness_filter This component allows players to set the light level range that causes the mob to spawn. Parameters Type Name Default Value Description Decimal min 0.0 This is the minimum light level value that allows the mob to spawn Decimal max 15.0 This is the maximum light level value that allows the mob to spawn Boolean adjust_for_weather false This determines if the weather can affect the light level conditions that cause the mob to spawn (e.g. allowing hostile mobs to spawn during the day when it rains). minecraft:weight This component allows players to give a priority to how often that mob should spawn. Mobs with lower weight values have a lower chance to spawn than mobs with higher weight values. Parameters Type Name Default Value Description Decimal default 0.0 This is the priority of the mob spawning minecraft:difficulty_filter This component allows players to determine what mobs spawn when certain difficulty levels are set. Parameters Type Name Default Value Description String min This is the minimum difficulty level that a mob spawns String max This is the maximum difficulty level that a mob spawns minecraft:height_filter This component allows players to determine at what height mobs spawn. Parameters Type Name Default Value Description String min This is the minimum y height at which a mob spawns String max This is the maximum y height at which a mob spawns minecraft:herd This component allows players to determine the herd size of animals. Parameters Type Name Default Value Description Decimal min_size This is the minimum number of mobs that spawn in a herd Decimal max_size This is the maximum number of mobs that spawn in a herd String event This is an event that can be triggered from spawning Decimal event_skip_count This is the number of mobs spawned before the specified event is triggered minecraft:biome_filter This component allows the players to specify which biomes the mob spawns in. Check below to see which Biome Tags exist, and what each biome is tagged as. Biome Tags Each biome in the game has one or more tags. These are used to determine what biomes mobs spawn in. Here is the list of Biome tags that can be used: Tag monster animal ocean nether the_end mooshroom_island plains desert jungle taiga extreme_hills savanna frozen cold lukewarm warm river swamp beach flower_forest forest birch dark_oak hills mutated edge lakes plateau deep mesa ice_plains ice mountain shore stone roofed mega Tagged Biomes Biome Tags Plains animal, monster, plains Desert monster, desert Mountain animal, monster, extreme_hills Forest animal, monster, forest Taiga animal, monster, taiga Swamp animal, monster, swamp River river Nether nether The End the_end Frozen Ocean ocean, frozen Frozen River river, frozen Snowy Tundra frozen, ice_plain, ice Snowy Mountains frozen, ice, mountain Mushroom Fields mooshroom_island Mushroom Fields Shore mooshroom_island, shore Beach monster, beach, warm Desert Hills monster, desert, hills Forest Hills animal, monster, hills Taiga Hills animal, monster, taiga, hills Mountain Edge animal, monster, extreme_hills, edge, mountain Jungle animal, monster, jungle Jungle Hills animal, monster, jungle, hills Jungle Edge animal, monster, jungle, edge Snowy Beach monster, beach, cold Stone Shore monster, beach, stone Birch Forest animal, monster, birch, forest Birch Forest Hills animal, monster, birch, forest, hills Dark Forest animal, monster, forest, roofed Snowy Taiga animal, monster, taiga, cold Snowy Taiga Hills animal, monster, taiga, cold, hills Giant Tree Taiga animal, monster, taiga, mega Giant Tree Taiga Hills animal, monster, taiga, mega, hills Wooded Mountain animal, monster, extreme_hills, forest, mountain Savanna animal, monster, savanna Savanna Plateau animal, monster, savanna Mesa monster Mesa Plateau Stone monster, plataeu Mesa Plateau monster, mesa Ocean ocean, monster Deep Ocean ocean, monster, deep Warm Ocean ocean, warm, monster Deep Warm Ocean ocean, warm, monster, deep Lukewarm Ocean ocean, lukewarm, monster Deep Lukewarm Ocean ocean, lukewarm, monster, deep Cold Ocean ocean, cold, monster Deep Cold Ocean ocean, cold, monster, deep Frozen Ocean ocean, frozen, monster Deep Frozen Ocean ocean, frozen, monster, deep Plains M animal, monster, plains, mutated Swamp M animal, monster, swamp, mutated Snowy Tundra M monster, frozen, ice_plains, mutated Cold Taiga M animal, monster, taiga, cold, mutated Savanna M animal, monster, savanna, mutated Savanna Plateau M animal, monster, savanna, plateau, mutated Dark Forest M animal, monster, roofed, forest, mutated Desert M monster, desert, mutated Forest M monster, flower_forest, forest, mutated Taiga M animal, monster, taiga, mutated Jungle M animal, monster, jungle, mutated Jungle Edge M animal, monster, jungle, edge, mutated Mesa M animal, monster, mesa, mutated Mesa Plateau M monster, mesa, plateau, mutated Mesa Plateau Stone M monster, mesa, plateau, mutated, stone Birch Forest M animal, monster, forest, birch, mutated Birch Forest Hills M animal, monster, forest, birch, mutated, hills Giant Trees Taiga M animal, monster, mutated, mega Mountain M animal, monster, extreme_hills, mutated Mountain + M animal, monster, extreme_hills, mutated, forest Giant Tree Taiga Hills M animal, monster, taiga, mega, hills, mutated Example Spawn Rules for the zombie "format_version": "1.8.0", "minecraft:spawn_rules": { "description": { "identifier": "minecraft:zombie", "population_control": "monster" }, "conditions": [ { "minecraft:spawns_on_surface": {}, "minecraft:brightness_filter": { "min": 0, "max": 7, "adjust_for_weather": true }, "minecraft:difficulty_filter": { "min": "easy", "max": "hard" }, "minecraft:weight": { "default": 100 }, "minecraft:herd": { "min_size": 2, "max_size": 4 }, "minecraft:permute_type": [ { "weight": 95 }, { "weight": 5, "entity_type": "minecraft:zombie_villager" } ], "minecraft:biome_filter": { "test": "has_biome_tag", "operator": "==", "value": "monster" } } ] } ID Lists Component IDs Parameters Type Name Default Value Description minecraft:behavior.avoid_mob_type 386517767 minecraft:behavior.beg 1346418048 minecraft:behavior.break_door -1798237626 minecraft:behavior.stomp_turtle_egg 851839416 minecraft:behavior.breed 51166360 minecraft:behavior.charge_held_item 81480366 minecraft:behavior.defend_village_target 1469600895 minecraft:behavior.drink_potion 277029334 minecraft:behavior.door_interact -286762735 minecraft:behavior.eat_block 1972447274 minecraft:behavior.explore_outskirts -1955198366 minecraft:behavior.flee_sun -617664229 minecraft:behavior.float 1758503000 minecraft:behavior.follow_owner 1213259599 minecraft:behavior.follow_parent 2127040136 minecraft:behavior.follow_caravan 9936402 minecraft:behavior.follow_mob -1524701626 minecraft:behavior.go_home -1579225026 minecraft:behavior.knockback_roar -1304117826 minecraft:behavior.scared 0 minecraft:behavior.move_to_water 1886139445 minecraft:behavior.move_to_land -943551837 minecraft:behavior.move_to_poi 0 minecraft:behavior.move_to_village -805189394 minecraft:behavior.hide 0 minecraft:behavior.work 0 minecraft:behavior.random_breach 928528911 minecraft:behavior.nearest_attackable_target -2032255557 minecraft:behavior.hurt_by_target -1710404297 minecraft:behavior.owner_hurt_by_target 530667419 minecraft:behavior.owner_hurt_target 995655261 minecraft:behavior.lay_egg -1207740530 minecraft:behavior.look_at_player -1892159379 minecraft:behavior.look_at_target -885375871 minecraft:behavior.look_at_entity -1735428573 minecraft:behavior.look_at_trading_player -2094605693 minecraft:behavior.mount_pathing 1112137677 minecraft:behavior.move_indoors 2107078532 minecraft:behavior.move_through_village 779377630 minecraft:behavior.move_towards_restriction 1288087401 minecraft:behavior.move_towards_target -166537884 minecraft:behavior.follow_target_captain -135480526 minecraft:behavior.move_to_random_block 395022171 minecraft:behavior.ocelotattack 560197714 minecraft:behavior.ocelot_sit_on_block -1327999383 minecraft:behavior.lay_down -2074934675 minecraft:behavior.offer_flower -885387854 minecraft:behavior.open_door -906200433 minecraft:behavior.panic -169886247 minecraft:behavior.run_around_like_crazy -1390363669 minecraft:behavior.restrict_sun -382716017 minecraft:behavior.restrict_open_door 715583988 minecraft:behavior.random_look_around 1177762851 minecraft:behavior.silverfish_merge_with_stone 321908121 minecraft:behavior.silverfish_wake_up_friends 484391748 minecraft:behavior.stay_while_sitting 1346980478 minecraft:behavior.make_love -1551283431 minecraft:behavior.snacking 875141064 minecraft:behavior.random_sitting 1722716662 minecraft:behavior.melee_attack 1848335663 minecraft:behavior.stomp_attack -1851446496 minecraft:behavior.delayed_attack 943514889 minecraft:behavior.ranged_attack -2093407250 minecraft:behavior.random_stroll -1643504294 minecraft:behavior.random_swim -1465281278 minecraft:behavior.random_fly -446385505 minecraft:behavior.swim_wander -1576142514 minecraft:behavior.tempt 422904556 minecraft:behavior.trade_interest -574851053 minecraft:behavior.peek 211304085 minecraft:behavior.play -505601580 minecraft:behavior.receive_love 1156694272 minecraft:behavior.take_flower 1218648257 minecraft:behavior.harvest_farm_block 10843010 minecraft:behavior.squid_idle 1741234679 minecraft:behavior.squid_flee 1304043261 minecraft:behavior.squid_move_away_from_ground 892387674 minecraft:behavior.squid_out_of_water -1347598607 minecraft:behavior.squid_dive 1626998843 minecraft:behavior.skeleton_horse_trap 530952387 minecraft:behavior.sleep -1811763 minecraft:behavior.swell -1473132493 minecraft:behavior.dragonholdingpattern 1066617362 minecraft:behavior.dragonlanding -152352492 minecraft:behavior.dragonscanning -1003941066 minecraft:behavior.dragonflaming -865288877 minecraft:behavior.dragontakeoff -1912535317 minecraft:behavior.dragonchargeplayer 1808565780 minecraft:behavior.dragonstrafeplayer -1510265153 minecraft:behavior.dragondeath -1541162059 minecraft:behavior.enderman_leave_block -717580550 minecraft:behavior.enderman_take_block -537294220 minecraft:behavior.leap_at_target 256926956 minecraft:behavior.guardian_attack -579215554 minecraft:behavior.slime_float -1480876341 minecraft:behavior.slime_keep_on_jumping -1844762087 minecraft:behavior.slime_random_direction 1437515506 minecraft:behavior.slime_attack -1315951081 minecraft:behavior.raid_garden -1145687602 minecraft:behavior.inspect_bookshelf 40191182 minecraft:behavior.player_ride_tamed 603869698 minecraft:behavior.find_mount 731306871 minecraft:behavior.controlled_by_player 1633000292 minecraft:behavior.wither_random_attack_pos_goal -528895885 minecraft:behavior.wither_target_highest_damage -1065562072 minecraft:behavior.float_wander -1122048364 minecraft:behavior.trade_with_player -2048563493 minecraft:behavior.summon_entity -2005850647 minecraft:behavior.mingle 385775952 minecraft:behavior.send_event -823429137 minecraft:behavior.charge_attack -1921442265 minecraft:behavior.vex_random_move -1117822165 minecraft:behavior.vex_copy_owner_target -643459543 minecraft:behavior.pickup_items 644287189 minecraft:behavior.share_items 2045906118 minecraft:behavior.find_underwater_treasure -1602192311 minecraft:behavior.circle_around_anchor -698025586 minecraft:behavior.swoop_attack 770804235 minecraft:behavior.pet_sleep_with_owner 1379392240 minecraft:behavior.drop_item_for 1846615759 minecraft:behavior.sneeze 1528584076 minecraft:behavior.roll 817471653 See also Add-on Bedrock Edition creator guidelines Bedrock Edition add-on documentation Bedrock Edition entity events documentation Bedrock Edition animation documentation Bedrock Edition particle documentation Bedrock Edition scripting documentation Bedrock Edition MoLang documentation Bedrock Edition UI documentation Bedrock Edition schemas documentation