Formula

saturn:expression

Evaluates an exp4j expression; params can override expression parameters.

A NumberProvider can be written as a number, a formula string, or an object with a type from this section. Game-time fields default to ticks; 20 ticks is usually one second.

JSON fields

Field	Type	Required	Default	Description
type	Resource ID	yes	—	saturn:expression
expression	String	yes	—	exp4j formula string.
params	String	no	{}	Parameter object passed to the script or formula.

JSON example

{
  "type": "saturn:expression",
  "expression": "base + 2",
  "params": {
    "base": 8
  }
}

This is a value to embed in the corresponding field, not a standalone loadable data pack file. The example: references in the examples must be replaced with defined entries.

Java entry point

com.iafenvoy.saturn.util.formula.number.Expression. This page is based on the Codec in the current 26.1.2 source.