Rotate entities arround circle

I want to make such an animation as in the video - I know that I need cosine, sine, etc. but my knowledge does not allow me to write it, because I don't know geometry well. Please help me to do this.

 

Start by spawning them in circle, then move by an angle offset.

 

I believe you already know how to generate entities, so let's get down to business, the Mathematics behind it.

To make a circle we're going to use the sine and cosine of an angle that will show us a position on the circle, then we're going to multiply both by the radius, since the default "radius" of sine and cosine is 1.

As the amount of items can vary, I made a calculation that will correctly distribute them in the circle...

Code: (I haven't programmed in pocketmine for a while, so I know the API works correctly, so please follow this code as a guide, not a solution...)

Code:

<?php

use pocketmine\item\Item;
use pocketmine\math\Vector3;

const RADIUS = 3;
protected $items = [];
protected $center;

protected $turns = 0;

//Your constructor function
public function __construct(array $items) {
    $thos->items = $items;
    $this->center = new Vector3(0,0,0);
}

//Your loop can be a ScheduleTask
public function loop() {
    $pi = 2 * M_PI;
    $cicles = 1 / sizeof($items);
   
    foreach ( $items as $i => $item ) {
        $x = sin($pi * ($i * $cicles)) * RADIUS;
        $y = cos($pi* ($i * $cicles)) * RADIUS;
        // X, Y, Z (using only Y,Z)
        $item->teleport($this->center->add(0, $x, $y));
    }
   
    $this->turns += $cicles;
    $this->items[] = array_shift($this->items);
   
    if ($this->turns >= 1) { //1 = 100%
        // 1 turn completed, you can stop here
    }
}