using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PlayerMovement : MonoBehaviour
{
    public float speed;
    // ★改良（攻撃力の実装）
    public float moveH { get; set; }

    private Rigidbody2D rb2d;
    private Animator animator;
    private SpriteRenderer spriteRenderer;
    public float jumpSpeed;
    public AudioClip jumpSound;
    public LayerMask floor;

    void Start()
    {
        rb2d = GetComponent<Rigidbody2D>();
        animator = GetComponent<Animator>();
        spriteRenderer = GetComponent<SpriteRenderer>();
    }

    void Update()
    {
        moveH = Input.GetAxisRaw("Horizontal");
        rb2d.velocity = new Vector2(moveH * speed, rb2d.velocity.y);

        animator.SetFloat("Speed", moveH);

        if (moveH > 0.5f)
        {
            spriteRenderer.flipX = false;
        }
        else if (moveH < -0.5f)
        {
            spriteRenderer.flipX = true;
        }

        if (Input.GetKeyDown(KeyCode.Space) && IsGrounded())
        {
            rb2d.velocity = Vector2.up * jumpSpeed;
            AudioSource.PlayClipAtPoint(jumpSound, Camera.main.transform.position);

            animator.SetTrigger("Jump");
        }

        else if (Input.GetKeyDown(KeyCode.Z))
        {
            if (moveH != 0)
            {
                return;
            }

            animator.SetTrigger("Attack1");
        }
    }

    private bool IsGrounded()
    {
        RaycastHit2D hit2d = Physics2D.Raycast(transform.position, Vector2.down, 0.6f, floor);
        return hit2d.collider != null;
    }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class SwordAttack : MonoBehaviour
{
    public AudioClip sound;
    public GameObject attackPoint;
    public GameObject attack_front;
    public GameObject attack_back;
    private RaycastHit2D hit2d;

    private PlayerMovement pm;
    private float num;

    void Start()
    {
        pm = GetComponent<PlayerMovement>();

        // アタックポイントの初期位置
        attackPoint.transform.position = attack_front.transform.position;
    }

    void Update()
    {
        // numの値は「0」「1」「-1」のいずれかになる（テクニック）
        num = pm.moveH;

        // アタックポイントの位置
        if (num == 1)
        {
            attackPoint.transform.position = attack_front.transform.position;
        }
        else if (num == -1)
        {
            attackPoint.transform.position = attack_back.transform.position;
        }

        // numが「１」の時は「右」に、numが「−１」の時は「左」にrayを飛ばす（ポイント）
        hit2d = Physics2D.Raycast(attackPoint.transform.position, Vector2.right * num, 0.3f);

        Debug.DrawRay(attackPoint.transform.position, Vector2.right * num, Color.white, 0.3f);
    }

    // ＜重要＞必ず「public」にすること（アニメーションからメソッドを実行するので）
    public void Attack()
    {
        if (hit2d.collider != null)
        {
            if (hit2d.collider.CompareTag("Enemy"))
            {
                Destroy(hit2d.collider.gameObject);
                AudioSource.PlayClipAtPoint(sound, transform.position);
            }
        }
    }
}