public class MerchantGlobalState : State<Character>
{
    public override void Enter()
    {
        Owner.Excutor.OnDamaged -= OnDamaged;
        Owner.Excutor.OnDamaged += OnDamaged;
    }

    public override void Exit()
    {
        Owner.Excutor.OnDamaged -= OnDamaged;
    }

    void OnDamaged(Character _, Damage damge)
    {
        if (Owner.Excutor.CurrentHp <= 0)
            Owner.ChangeState<MerchantDisappear>();
    }
}