<?php

namespace App\Game;

/** A small 4x2 mark: a bolt flying, a piece of debris. */
final class Particle
{
    public int $y = 0;
    public int $x = 0;
    public int $dy = 0;
    public int $dx = 0;
    public bool $used = false;

    public function set(int $y, int $x, int $dy, int $dx): void
    {
        $this->y = $y;
        $this->x = $x;
        $this->dy = $dy;
        $this->dx = $dx;
        $this->used = true;
    }

    public function clear(): void
    {
        $this->used = false;
        $this->dy = 0;
        $this->dx = 0;
    }
}