/// <summary>
/// Sent when another object leaves a trigger collider attached to
/// this object (2D physics only).
/// </summary>
/// <param name="other">The other Collider2D involved in this collision.</param>
void OnTriggerExit2D(Collider2D other)
{
ObjectController2D obj = other.GetComponent <ObjectController2D>();
if (obj && objs.Contains(obj))
{
objs.Remove(obj);
obj.ApplyForce(speed);
}
}
