Mob Transform Recipe

The Mob Transform recipe allows you to define transformation rules between mob entities, including complex transformations based on tag conditions.

Basic Structure

ServerEvents.recipes(event => {
  event.custom({
    type: "anvilcraft:mob_transform",
    input: "minecraft:cow",
    results: [
      {
        entity: "minecraft:pig",
        probability: 1.0
      }
    ],
    tagPredicates: [],
    tagModifications: [],
    transformOptions: []
  })
})

Utility Methods

ServerEvents.recipes(event => {
  // Mob transform recipe - different constructor parameter combinations
  event.recipes.anvilcraft.mob_transform("anvilcraft:cow_to_pig") // ID only
  
  event.recipes.anvilcraft.mob_transform(
    "minecraft:cow",                       // Input mob
    [{ entity: "minecraft:pig", probability: 1.0 }] // Transform results
  )
  
  // Full version with predicates, modifications, and options
  event.recipes.anvilcraft.mob_transform(
    "anvilcraft:cow_to_pig_advanced",     // Recipe ID
    "minecraft:cow",                       // Input mob
    [{ entity: "minecraft:pig", probability: 1.0 }], // Transform results
    [],                                   // Tag predicates
    [],                                   // Tag modifications
    []                                    // Transform options
  )
})

KubeJS Style Builder

ServerEvents.recipes(event => {
  event.recipes.anvilcraft.mob_transform()
    .input("minecraft:cow")              // Input mob
    .addResult("minecraft:pig", 1.0)     // Add transform result (mob, probability)
})

Parameter Descriptions

input (Input Mob)

The original mob entity type to be transformed, such as "minecraft:cow".

results (Transform Results)

List of possible transformation results:

• entity: Target mob entity type
• probability: Transformation probability (0.0 to 1.0)

tagPredicates (Tag Predicates)

Conditions for triggering the transformation, based on entity NBT tag values.

tagModifications (Tag Modifications)

Modifications to entity NBT tags after transformation.

transformOptions (Transform Options)

Special options to control transformation behavior.

Practical Examples

Basic Transform

ServerEvents.recipes(event => {
  // Transform cow into pig
  event.recipes.anvilcraft.mob_transform()
    .input("minecraft:cow")
    .addResult("minecraft:pig")
})

Transform with Probability

ServerEvents.recipes(event => {
  // Transform cow into pig (70% probability) or sheep (30% probability)
  event.recipes.anvilcraft.mob_transform()
    .input("minecraft:cow")
    .addResult("minecraft:pig", 0.7)
    .addResult("minecraft:sheep", 0.3)
})

Conditional Transform

ServerEvents.recipes(event => {
  // Only transform when entity has specific tag
  event.recipes.anvilcraft.mob_transform()
    .input("minecraft:zombie")
    .addResult("minecraft:skeleton")
    .predicate(p => p.numericTag("Health").greaterThan(10))  // When health > 10
})

Modify Entity Tags

ServerEvents.recipes(event => {
  // Transform and modify entity tags
  event.recipes.anvilcraft.mob_transform()
    .input("minecraft:pig")
    .addResult("minecraft:cow")
    .modification(m => m.set("CustomName", '"Transformed Cow"'))  // Set custom name
})

Using Transform Options

ServerEvents.recipes(event => {
  // Using transform options
  event.recipes.anvilcraft.mob_transform()
    .input("minecraft:chicken")
    .addResult("minecraft:bat")
    .transformOption("PRESERVE_EQUIPMENT")  // Preserve equipment
    .transformOption("COPY_POSITION")       // Copy position
})

Advanced Usage

Complex Tag Conditions

ServerEvents.recipes(event => {
  event.recipes.anvilcraft.mob_transform()
    .input("minecraft:skeleton")
    .addResult("minecraft:wither_skeleton")
    .predicate(p => p.numericTag("Health").greaterThan(15))
    .predicate(p => p.distanceToNearestPlayer().lessThan(5))
    .modification(m => m.set("HandItems", "[{id: 'minecraft:stone_sword', Count: 1b}]"))
})

Multiple Results and Complex Logic

ServerEvents.recipes(event => {
  event.recipes.anvilcraft.mob_transform()
    .input("minecraft:villager")
    .addResult("minecraft:witch", 0.3)
    .addResult("minecraft:evoker", 0.2)
    .addResult("minecraft:vindicator", 0.5)
    .predicate(p => p.numericTag("Health").lessThan(10))
    .transformOption("PRESERVE_EQUIPMENT")
})

Available Predicate Conditions

• numericTag(tagName): Access numeric NBT tag

  • .greaterThan(value): Greater than specified value
  • .lessThan(value): Less than specified value
  • .equals(value): Equals specified value
  • .between(min, max): Within specified range

• distanceToNearestPlayer(): Distance to nearest player

  • Supports the same comparison methods as numeric tags

Available Tag Modifications

• set(tagName, value): Set NBT tag value
• add(tagName, value): Add to numeric tag value
• multiply(tagName, value): Multiply numeric tag value
• remove(tagName): Remove tag

Available Transform Options

• PRESERVE_EQUIPMENT: Preserve equipment
• COPY_POSITION: Copy position
• COPY_NAME: Copy name
• PRESERVE_EFFECTS: Preserve effects