using UnityEngine;

// EnemyStateをAnimator Parameterへ反映する
[RequireComponent(typeof(Animator))]
[RequireComponent(typeof(EnemyController))]
public class EnemyAnimator : MonoBehaviour
{
    private static readonly int IsMovingId =
        Animator.StringToHash("IsMoving");
    private static readonly int IsAttackingId =
        Animator.StringToHash("IsAttacking");
    private static readonly int IsDamagedId =
        Animator.StringToHash("IsDamaged");
    private static readonly int IsDeadId =
        Animator.StringToHash("IsDead");

    private Animator _animator;
    private EnemyController _enemyController;

    // 必要なコンポーネントを取得する
    private void Awake()
    {
        _animator = GetComponent<Animator>();
        _enemyController = GetComponent<EnemyController>();
    }

    // EnemyControllerの状態更新後にAnimator Parameterを更新する
    private void LateUpdate()
    {
        var state = _enemyController.State;

        _animator.SetBool(
            IsMovingId,
            state == EnemyState.Move);
        _animator.SetBool(
            IsAttackingId,
            state == EnemyState.Attack);
        _animator.SetBool(
            IsDamagedId,
            state == EnemyState.Damage);
        _animator.SetBool(
            IsDeadId,
            state == EnemyState.Dead);
    }
}