Timer

import { Engine, Timer } from 'jecs';

const engine = new Engine();
const timer = new Timer(engine);

engine.system('mySystem', ['myComponent'], (entity, { myComponent }) => {
  const delta = timer.getTime().delta;
  // Do your magic with delta time!
  // ...
});

// Object returned by getTime() has this structure:
{
  ticks,  // Number of ticks (frames)
  start,  // Initial time (milliseconds since the EPOCH)
  now,    // Current time (milliseconds since the EPOCH)
  total,  // Total execution time (milliseconds)
  delta   // Delta time from prev tick (milliseconds)
}

Methods

getEntity() → {Entity}

Source:

• timer.js, line 118

Returns:

Type

Entity

getSystem() → {System}

Source:

• timer.js, line 127

Returns:

Type

System

getTime() → {Object}

Source:

• timer.js, line 109

Example

The time object contains these properties:<br/>
<table>
<tr><th>start</td><td>initial time</td>
<tr><th>total</td><td>total execution time</td>
<tr><th>prev</td><td>previous frame absolute time</td>
<tr><th>delta</td><td>delta time from prev tick</td>
</table>

Returns:

Type

Object

reset()

Source:

• timer.js, line 88