public class MerchantStateHandler : StateHandler<Character>
{
    protected override void OnInitialize()
    {
        AddGlobalState<MerchantGlobalState>();

        AddState<MerchantIdle>();
        AddState<MerchantAppear>();
        AddState<MerchantDisappear>();
        AddState<MerchantMove>();

        Excutor.OnSpawned += OnSpawnOwner;
    }

    private void OnDestroy()
    {
        Excutor.OnSpawned -= OnSpawnOwner;
    }

    private void OnSpawnOwner(Character owner)
    {
        ChangeGlobalState<MerchantGlobalState>();
        ChangeState<MerchantAppear>();
    }
}