StdLib

Package: com.hypixel.hytale.server.npc.util.expression

public class StdLib extends StdScope

Singleton standard library scope that serves as the root parent for all NPC expression scopes. Registers built-in constants and functions used in NPC role JSON expressions.

Built-in Constants

Name	Type	Value
true	BOOLEAN	true
false	BOOLEAN	false
PI	NUMBER	3.1415927 (float-precision Math.PI)

Built-in Functions

Name	Signature	Variant	Description
max	max(NUMBER, NUMBER) -> NUMBER	invariant	Returns the larger of two numbers.
min	min(NUMBER, NUMBER) -> NUMBER	invariant	Returns the smaller of two numbers.
isEmpty	isEmpty(STRING) -> BOOLEAN	invariant	Returns true if the string is null or empty.
isEmptyStringArray	isEmptyStringArray(STRING_ARRAY) -> BOOLEAN	invariant	Returns true if the string array has length 0.
isEmptyNumberArray	isEmptyNumberArray(NUMBER_ARRAY) -> BOOLEAN	invariant	Returns true if the number array has length 0.
random	random() -> NUMBER	variant	Returns a random double in [0, 1).
randomInRange	randomInRange(NUMBER, NUMBER) -> NUMBER	variant	Returns a random double in [min, max).
makeRange	makeRange(NUMBER) -> NUMBER_ARRAY	invariant	Creates a two-element array [v, v] from a single value.

Methods

Modifier	Return Type	Signature
public static	StdScope	getInstance()

Related Types

• StdScope — parent class providing the symbol table
• Expression — uses this as the root scope for NPC expressions