Check if player interact with paticleEffect?

so I am making an rpg plugin, and i have a spell that shoots red dust particles using this:

Code:java

public static void castFireball(Player player){
        Location pl = player.getEyeLocation();
 
        double px = pl.getX();
        double py = pl.getY();
        double pz = pl.getZ();
 
        double yaw  = Math.toRadians(pl.getYaw() + 90);
        double pitch = Math.toRadians(pl.getPitch() + 90);
 
        double x = Math.sin(pitch) * Math.cos(yaw);
        double y = Math.sin(pitch) * Math.sin(yaw);
        double z = Math.cos(pitch);
 
        for(int i = 1 ; i <= 70 ; i++) {
            Location loc = new Location(player.getWorld(), px + i*x, py + i*z, pz + i*y);
            if(loc.getBlock().getType() == Material.AIR)
                ParticleEffect.RED_DUST.display(loc, 0, 0, 0, 0, 1);
            else break;
        }
      }

how would I check if a player interacted with that particle, and damage that player? thanks.

 

I could be completely wrong on this but maybe check to see if the particle's location is equal to the player's location?

 

Never mind, i figured it out. all i did was check if there was near by living entities in a 3 block radious and damage them. here is the new code for anyone who needs it:

Code:

public static void castFireball(Player player){
        Location pl = player.getEyeLocation();
       
        double px = pl.getX();
        double py = pl.getY();
        double pz = pl.getZ();
       
        double yaw  = Math.toRadians(pl.getYaw() + 90);
        double pitch = Math.toRadians(pl.getPitch() + 90);
       
        double x = Math.sin(pitch) * Math.cos(yaw);
        double y = Math.sin(pitch) * Math.sin(yaw);
        double z = Math.cos(pitch);
       
        for(int i = 1 ; i <= 20 ; i++) {
            Location loc = new Location(player.getWorld(), px + i*x, py + i*z, pz + i*y);
            if(loc.getBlock().getType() == Material.AIR){
                ParticleEffect.RED_DUST.display(loc, 0, 0, 0, 0, 1);
                double radius = 3D;
                List<Entity> near = loc.getWorld().getEntities();
                for(Entity e : near) {
                    if(e.getLocation().add(0, 1, 0).distance(loc) <= radius)
                        ((CraftLivingEntity) e).damage(3);
                }
            }else break;
        }
      }