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Trial spawner configuration

Minecraft Wiki article. Categories: Java_Edition, Data_packs

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This article is reproduced from Trial spawner configuration on the Minecraft Wiki. Mirrored from revision 3259142. It is licensed CC BY-NC-SA 3.0 by the Minecraft Wiki contributors — not under the Codex’s CC BY-SA 4.0, and it may not be used commercially. Edits belong upstream, not here.

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This feature is exclusive to Java Edition.
 

Trial spawner configuration is used to configure a trial spawner.

Definition

Trial spawner configurations can be defined in data packs, as part of the directory structure below.

JSON Format

Trial spawner configurations are defined using the following format:

  • [NBT Compound / JSON Object] The root object.
    • [Int] spawn_range: Between 1 and 128. Defaults to 4 — Maximum distance in blocks that mobs can spawn.
    • [Float] total_mobs: Defaults to 6 — Total amount of mobs spawned before cooldown for a single player.
    • [Float] simultaneous_mobs: Defaults to 2 — The amount of spawned mobs from this spawner that are allowed to exist simultaneously.
    • [Float] total_mobs_added_per_player: Defaults to 2 — Amount of total mobs added for each additional player.
    • [Float] simultaneous_mobs_added_per_player: Defaults to 1 — Amount of simultaneous mobs added for each additional player.
    • [Int] ticks_between_spawn: Defaults to 40 — Time in ticks between spawn attempts.
    • [NBT List / JSON Array] spawn_potentials: Defaults to an empty list — List of possible entities to spawn.
      • [NBT Compound / JSON Object]: A potential future spawn. After the spawner makes an attempt at spawning, it chooses one of these entries at random and uses it to prepare for the next spawn.
        • [Int] weight: The chance that this spawn gets picked in comparison to other spawn weights. Must be positive and at least 1.
        • [NBT Compound / JSON Object] data
    • [NBT List / JSON Array] loot_tables_to_eject: Defaults to a list of minecraft:spawners/trial_chamber/consumables and minecraft:spawners/trial_chamber/key, both with weight 1 — List of possible loot tables to give as reward.
      • [NBT Compound / JSON Object]: A potential loot table.
        • [Int] weight: The chance that this loot table gets picked in comparison to other loot table weights. Must be positive and at least 1.
        • [String] data: A resource location to a loot table.
    • [String] items_to_drop_when_ominous: Defaults to minecraft:spawners/trial_chamber/items_to_drop_when_ominous — A resource location to a loot table. Determines the items used by ominous item spawners spawned during the active phase when ominous. Ignored in normal mode.

History

Java Edition
1.21.224w35aTrial spawner configurations can now be defined in datapacks, instead of only in the Trial spawner block entity

Sources