@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
ShipMovement that = (ShipMovement) o;
if (movements != null ? !movements.equals(that.movements) : that.movements != null)
return false;
if (ship != null ? !ship.equals(that.ship) : that.ship != null) return false;
return true;
}
@Override
public int hashCode() {
int result = ship != null ? ship.hashCode() : 0;
result = 31 * result + (movements != null ? movements.hashCode() : 0);
return result;
}