Mob Transform Recipe

Mob transform recipes allow you to define transformation rules between mob entities, including complex transformations based on tag conditions.

Basic Structure

{
  "type": "anvilcraft:mob_transform",
  "input": "minecraft:cow",
  "results": [
    {
      "entity": "minecraft:pig",
      "probability": 1.0
    }
  ],
  "tagPredicates": [],
  "tagModifications": [],
  "transformOptions": []
}

Field Description

type

Fixed value anvilcraft:mob_transform, identifies this as a mob transform recipe.

input

The original mob entity type to transform, e.g., "minecraft:cow".

results

List of possible transformation results:

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

tagPredicates

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

tagModifications

Modifications to entity NBT tags after transformation.

transformOptions

Special options controlling transformation behavior.

Tag Predicates

Tag predicates are used to define conditions for triggering transformation, based on entity NBT tag values.

Numeric Tag Predicate

{
  "tagPath": "Health",
  "comparison": ">",
  "value": 10.0
}

Supported comparison operators:

• >: Greater than
• <: Less than
• >=: Greater than or equal
• <=: Less than or equal
• ==: Equal
• !=: Not equal

Distance Predicate

{
  "type": "distance_to_nearest_player",
  "comparison": "<",
  "value": 5.0
}

Tag Modifications

Tag modifications are used to modify entity NBT tags after transformation.

Set Tag Value

{
  "operation": "SET",
  "tagPath": "CustomName",
  "value": "{\"text\":\"Transformed Cow\"}"
}

Add to Numeric Tag

{
  "operation": "ADD",
  "tagPath": "Health",
  "value": 10.0
}

Multiply Numeric Tag

{
  "operation": "MULTIPLY",
  "tagPath": "Health",
  "value": 2.0
}

Remove Tag

{
  "operation": "REMOVE",
  "tagPath": "CustomName"
}

Transform Options

Transform options control special aspects of transformation behavior:

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

Usage Examples

Basic Transformation

{
  "type": "anvilcraft:mob_transform",
  "input": "minecraft:cow",
  "results": [
    {
      "entity": "minecraft:pig",
      "probability": 1.0
    }
  ]
}

Transformation with Probability

{
  "type": "anvilcraft:mob_transform",
  "input": "minecraft:cow",
  "results": [
    {
      "entity": "minecraft:pig",
      "probability": 0.7
    },
    {
      "entity": "minecraft:sheep",
      "probability": 0.3
    }
  ]
}

Conditional Transformation

{
  "type": "anvilcraft:mob_transform",
  "input": "minecraft:zombie",
  "results": [
    {
      "entity": "minecraft:skeleton",
      "probability": 1.0
    }
  ],
  "tagPredicates": [
    {
      "tagPath": "Health",
      "comparison": ">",
      "value": 10.0
    }
  ]
}

Modifying Entity Tags

{
  "type": "anvilcraft:mob_transform",
  "input": "minecraft:pig",
  "results": [
    {
      "entity": "minecraft:cow",
      "probability": 1.0
    }
  ],
  "tagModifications": [
    {
      "operation": "SET",
      "tagPath": "CustomName",
      "value": "{\"text\":\"Transformed Cow\"}"
    }
  ]
}

Using Transform Options

{
  "type": "anvilcraft:mob_transform",
  "input": "minecraft:chicken",
  "results": [
    {
      "entity": "minecraft:bat",
      "probability": 1.0
    }
  ],
  "transformOptions": [
    "PRESERVE_EQUIPMENT",
    "COPY_POSITION"
  ]
}

Complex Tag Conditions

{
  "type": "anvilcraft:mob_transform",
  "input": "minecraft:skeleton",
  "results": [
    {
      "entity": "minecraft:wither_skeleton",
      "probability": 1.0
    }
  ],
  "tagPredicates": [
    {
      "tagPath": "Health",
      "comparison": ">",
      "value": 15.0
    },
    {
      "type": "distance_to_nearest_player",
      "comparison": "<",
      "value": 5.0
    }
  ],
  "tagModifications": [
    {
      "operation": "SET",
      "tagPath": "HandItems",
      "value": "[{id: \"minecraft:stone_sword\", Count: 1b}]"
    }
  ]
}