public Vector2 RepelParticle(SlugParticle particle) {

		Vector2 direction = transform.position - particle.transform.position;

		float distance = direction.magnitude;
		distance = Mathf.Clamp(distance, 1f, 100f);
	
		float force = -1f * strengh / (distance * distance);
		direction = direction.normalized * force;

		return direction;
	}
	public Vector2 AttractParticle(SlugParticle particle) {

		Vector2 force = transform.position - particle.transform.position;

		float distance = force.magnitude;
		distance = Mathf.Clamp(distance, 1f, 100f);


		float strenght = (strengh * mass * particle.mass)/ (distance * distance);
		force = force.normalized * strenght;

		return force;
	}
	public void KillParticle(SlugParticle particle) {

		particle.isAlive = false;
		particle.gameObject.SetActive (false);
	}