Spawner Rune definitions

Spawner Rune definitions are data files that determine which mobs should spawn from certain Spawner Runes, Elite Obelisks or in boss rooms.

They can be individually configured through datapacks. Their definitions are available in data/<namespace>/spawner_runes/

You can define these files in a datapack to override the existing Mine Cells spawner rune definitions, or to create custom ones.

To summon a Spawner Rune defined in data/<namespace>/spawner_runes/<name>.json, use the command:

/minecells:spawnerrune spawn <namespace>:<name>

Spawner Rune definition index

The given path is relative to data/minecells/spawner_runes/, and is missing the .json suffix

Path	Info
Spawner Runes
prison	All Spawner Runes in the Prisoners' Quarters
promenade/melee	Melee mobs in Promenade
promenade/ranged	Ranged mobs in Promenade
promenade/protector	The Protector mob of the Promenade
ramparts_flies	Buzzcutters in Ramparts
ramparts_melee	Melee mobs in Ramparts
ramparts_ranged	Ranged mobs in Ramparts
ramparts_mixed	Both melee and ranged mobs in Ramparts
sweeper	The Sweeper mob of the Ramparts
Elite Obelisks
elite/vine_rune	The Undead Archer summoned in the Promenade, dropping a Vine Rune when defeated
Boss Rooms
boss/concierge	The Concierge boss that spawns on the Black Bridge
boss/conjunctivius	The Conjunctivius boss that spawns in the Insufferable Crypt

Example Spawner Rune json files

Here's an example.json Spawner Rune definition file:

{
  // not yet implemented - should prevent the runes
  // from activating multiple times at once per each nearby player.
  // So it'll have to wait the given time after processing the 1st player,
  // (optional, defaults to 60)
  "cooldown": 120.0

   // distance that the spawned mobs should "spread" in
   // (optional, defaults to 0)
  "spawnDistance": 2.0

  // minimum player distance for the mobs to spawn
  "playerDistance": 16.0,
  "pools": [
    // 1st pool - spawns between 2 and 3 entities, each chosen randomly
    // based on their weights
    {
      "rolls": {
        "type": "uniform",
        "value": {
          "min_inclusive": 2,
          "max_inclusive": 3
        }
      },
      "entries": [
        { "weight": 5, "entity": "minecells:shieldbearer" },
        { "weight": 3, "entity": "minecells:grenadier" },
        { "weight": 2, "entity": "minecells:inquisitor" }
      ]
    },
    // 2nd pool - spawns one Leaping Zombie
    {
      "rolls": 1,
      "entries": [
        {
          // (optional, defaults to 1)
          "weight": 1,
          "entity": "minecells:leaping_zombie"
        }
      ]
    }
  ]
}

Custom attributes

Available since 1.20.1-1.6.1

Modpack developers can tweak the attributes of the entities spawned by Spawner Runes individually. This means Mine Cells dungeons can be adjusted to the pack's difficulty.

To tweak the attributes, include the optional attributes map field in the desired element of entries, like so:

{
  "playerDistance": 16.0,
  "pools": [
    {
      "rolls": 1,
      "entries": [
        {
          "weight": 1,
          "entity": "minecells:leaping_zombie",
          "attributes": {
            // set max health to 200 points (100 hearts)
            "generic.max_health": 200,    
            // set movement speed to 0.5 
            // (which is quite a bit quicker than the default)
            "generic.movement_speed": 0.5
          }
        }
      ]
    }
  ]
}

Custom NBT

Available since 1.20.1-1.7.0

Arbitrary NBT data can also be appended to spawned mobs.

NOTE:

isElite and additionalLootTable used in this definition are only implemented for Mine Cells entities!
You'll have to research your entity-specific and generic NBT tags by yourself to make them work properly.

{
  "playerDistance": 16.0,
  "pools": [
    {
      "rolls": 1,
      "entries": [
        {
          "weight": 1,
          "entity": "minecells:undead_archer",
          "attributes": {
            "generic.max_health": 100.0,
            "generic.movement_speed": 0.35,
            "generic.attack_damage": 8.0
          },
          "nbt": {
            // set the isElite NBT tag 
            // (will upscale the entity and display an "ELITE" badge above it)
            "isElite": true, 
            // setup additional loot table for the entity to drop on death
            "additionalLootTable": "minecells:entities/elite/vine_rune" 
          }
        }
      ]
    }
  ]
}