Entity & time API

Identify the behavior owner and read engine-supplied frame intervals.

When to call it

Read the entity ID when another system needs a stable reference to this owner. Use delta_time with Update for frame-rate-independent presentation and fixed_delta_time with FixedUpdate for simulation.

Calls

rustic.entity_id()
rustic.delta_time()
rustic.fixed_delta_time()

Variables

This API has no arguments.

Return and timing

The ID is a stable string. Time values are finite seconds.

Language examples

Lua 5.4

lua

local id = rustic.entity_id()
local dt = rustic.delta_time()
local fixedDt = rustic.fixed_delta_time()

JavaScript

javascript

const id = rustic.entity_id();
const dt = rustic.delta_time();
const fixedDt = rustic.fixed_delta_time();

Python

python

entity_id = rustic.entity_id()
dt = rustic.delta_time()
fixed_dt = rustic.fixed_delta_time()

C++

cpp

std::string id = rustic.entity_id();
double dt = rustic.delta_time();
double fixedDt = rustic.fixed_delta_time();

C#

csharp

string id = rustic.entity_id();
double dt = rustic.delta_time();
double fixedDt = rustic.fixed_delta_time();

Luau

lua

local id = rustic.entity_id()
local dt = rustic.delta_time()

C

const char *id = rustic.entity_id();
double dt = rustic.delta_time();

Java

java

String id = rustic.entity_id();
double dt = rustic.delta_time();

PHP

php

$id = $rustic->entity_id();
$dt = $rustic->delta_time();

HTML / inline JS

javascript

const id = rustic.entity_id();
const dt = rustic.delta_time();

Constraints and behavior

Every gameplay language calls the engine-owned API. Rustic supplies SDKs and dispatches callbacks; scripts do not parse requests or serialize responses. See the language guide for complete setup and callback registration.