Unity 2Dアクションの作り方【BGM・SEをつけよう】

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

public class Player : MonoBehaviour
{
    #region//インスペクターで設定する
    [Header("移動速度")] public float speed;
    [Header("重力")] public float gravity;
    [Header("ジャンプ速度")] public float jumpSpeed;
    [Header("ジャンプする高さ")] public float jumpHeight;
    [Header("ジャンプする長さ")] public float jumpLimitTime;
    [Header("接地判定")] public GroundCheck ground;
    [Header("天井判定")] public GroundCheck head;
    [Header("ダッシュの速さ表現")] public AnimationCurve dashCurve;
    [Header("ジャンプの速さ表現")] public AnimationCurve jumpCurve;
    [Header("踏みつけ判定の高さの割合(%)")] public float stepOnRate;
    [Header("ジャンプする時に鳴らすSE")] public AudioClip jumpSE; //New!
    [Header("やられた鳴らすSE")] public AudioClip downSE; //New
    [Header("コンティニュー時に鳴らすSE")] public AudioClip continueSE;  //New
    #endregion

    #region//プライベート変数
    private Animator anim = null;
    private Rigidbody2D rb = null;
    private CapsuleCollider2D capcol = null;
    private SpriteRenderer sr = null;
    private bool isGround = false;
    private bool isJump = false;
    private bool isHead = false;
    private bool isRun = false;
    private bool isDown = false;
    private bool isOtherJump = false;
    private bool isContinue = false;
    private bool nonDownAnim = false;
    private float jumpPos = 0.0f;
    private float otherJumpHeight = 0.0f;
    private float dashTime = 0.0f;
    private float jumpTime = 0.0f;
    private float beforeKey = 0.0f;
    private float continueTime = 0.0f;
    private float blinkTime = 0.0f;
    private string enemyTag = "Enemy";
    private string deadAreaTag = "DeadArea";
    private string hitAreaTag = "HitArea";
    #endregion

    void Start()
    {
        //コンポーネントのインスタンスを捕まえる
        anim = GetComponent<Animator>();
        rb = GetComponent<Rigidbody2D>();
        capcol = GetComponent<CapsuleCollider2D>();
        sr = GetComponent<SpriteRenderer>();
    }

    private void Update()
    {
        if (isContinue)
        {
            //明滅　ついている時に戻る
            if (blinkTime > 0.2f)
            {
                sr.enabled = true;
                blinkTime = 0.0f;
            }
            //明滅　消えているとき
            else if (blinkTime > 0.1f)
            {
                sr.enabled = false;
            }
            //明滅　ついているとき
            else
            {
                sr.enabled = true;
            }
            //1秒たったら明滅終わり
            if (continueTime > 1.0f)
            {
                isContinue = false;
                blinkTime = 0.0f;
                continueTime = 0.0f;
                sr.enabled = true;
            }
            else
            {
                blinkTime += Time.deltaTime;
                continueTime += Time.deltaTime;
            }
        }
    }

    void FixedUpdate()
    {
        if (!isDown && !GManager.instance.isGameOver)
        {
            //接地判定を得る
            isGround = ground.IsGround();
            isHead = head.IsGround();

            //各種座標軸の速度を求める
            float xSpeed = GetXSpeed();
            float ySpeed = GetYSpeed();

            //アニメーションを適用
            SetAnimation();

            //移動速度を設定
            rb.velocity = new Vector2(xSpeed, ySpeed);
        }
        else
        {
            rb.velocity = new Vector2(0, -gravity);
        }
    }

    /// <summary>
    /// Y成分で必要な計算をし、速度を返す。
    /// </summary>
    /// <returns>Y軸の速さ</returns>
    private float GetYSpeed()
    {
        float verticalKey = Input.GetAxis("Vertical");
        float ySpeed = -gravity;

        //何かを踏んだ際のジャンプ
        if (isOtherJump)
        {
            //現在の高さが飛べる高さより下か
            bool canHeight = jumpPos + otherJumpHeight > transform.position.y;
            //ジャンプ時間が長くなりすぎてないか
            bool canTime = jumpLimitTime > jumpTime;

            if (canHeight && canTime && !isHead)
            {
                ySpeed = jumpSpeed;
                jumpTime += Time.deltaTime;
            }
            else
            {
                isOtherJump = false;
                jumpTime = 0.0f;
            }
        }
        //地面にいるとき
        else if (isGround)
        {
            if (verticalKey > 0)
            {
　　　　　　　　 if(!isJump)
                {
 　　　　　　　　    GManager.instance.PlaySE(jumpSE);  //New!
                }
                ySpeed = jumpSpeed;
                jumpPos = transform.position.y; //ジャンプした位置を記録する
                isJump = true;
                jumpTime = 0.0f;
            }
            else
            {
                isJump = false;
            }
        }
        //ジャンプ中
        else if (isJump)
        {
            //上方向キーを押しているか
            bool pushUpKey = verticalKey > 0;
            //現在の高さが飛べる高さより下か
            bool canHeight = jumpPos + jumpHeight > transform.position.y;
            //ジャンプ時間が長くなりすぎてないか
            bool canTime = jumpLimitTime > jumpTime;

            if (pushUpKey && canHeight && canTime && !isHead)
            {
                ySpeed = jumpSpeed;
                jumpTime += Time.deltaTime;
            }
            else
            {
                isJump = false;
                jumpTime = 0.0f;
            }
        }

        if (isJump || isOtherJump)
        {
            ySpeed *= jumpCurve.Evaluate(jumpTime);
        }
        return ySpeed;
    }


    /// <summary>
    /// X成分で必要な計算をし、速度を返す。
    /// </summary>
    /// <returns>X軸の速さ</returns>
    private float GetXSpeed()
    {
        float horizontalKey = Input.GetAxis("Horizontal");
        float xSpeed = 0.0f;

        if (horizontalKey > 0)
        {
            transform.localScale = new Vector3(1, 1, 1);
            isRun = true;
            dashTime += Time.deltaTime;
            xSpeed = speed;
        }
        else if (horizontalKey < 0)
        {
            transform.localScale = new Vector3(-1, 1, 1);
            isRun = true;
            dashTime += Time.deltaTime;
            xSpeed = -speed;
        }
        else
        {
            isRun = false;
            xSpeed = 0.0f;
            dashTime = 0.0f;
        }

        //前回の入力からダッシュの反転を判断して速度を変える
        if (horizontalKey > 0 && beforeKey < 0)
        {
            dashTime = 0.0f;
        }
        else if (horizontalKey < 0 && beforeKey > 0)
        {
            dashTime = 0.0f;
        }

        xSpeed *= dashCurve.Evaluate(dashTime);
        beforeKey = horizontalKey;
        return xSpeed;
    }

    /// <summary>
    /// アニメーションを設定する
    /// </summary>
    private void SetAnimation()
    {
        anim.SetBool("jump", isJump || isOtherJump);
        anim.SetBool("ground", isGround);
        anim.SetBool("run", isRun);
    }


    /// <summary>
    /// コンティニュー待機状態か
    /// </summary>
    /// <returns></returns>
    public bool IsContinueWaiting()
    {
        if (GManager.instance.isGameOver)
        {
            return false;
        }
        else
        {
            return IsDownAnimEnd() || nonDownAnim;
        }
    }

    //ダウンアニメーションが完了しているかどうか
    private bool IsDownAnimEnd()
    {
        if (isDown && anim != null)
        {
            AnimatorStateInfo currentState = anim.GetCurrentAnimatorStateInfo(0);
            if (currentState.IsName("player_down"))
            {
                if (currentState.normalizedTime >= 1)
                {
                    return true;
                }
            }
        }
        return false;
    }

    /// <summary>
    /// コンティニューする
    /// </summary>
    public void ContinuePlayer()
    {
        GManager.instance.PlaySE(continueSE);  //New! 
        isDown = false;
        anim.Play("player_stand");
        isJump = false;
        isOtherJump = false;
        isRun = false;
        isContinue = true;
        nonDownAnim = false;
    }

    //やられた時の処理
    private void ReceiveDamage(bool downAnim)
    {
        if (isDown)
        {
             return;
        }
        else
        {
             if (downAnim)
             {
                 anim.Play("player_down");
             }
             else
             {
                 nonDownAnim = true;
             }
             isDown = true;
　　　　　　　GManager.instance.PlaySE(downSE);  //New!
             GManager.instance.SubHeartNum();
        }
    }

    #region//接触判定
    private void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.collider.tag == enemyTag)
        {
            //踏みつけ判定になる高さ
            float stepOnHeight = (capcol.size.y * (stepOnRate / 100f));

            //踏みつけ判定のワールド座標
            float judgePos = transform.position.y - (capcol.size.y / 2f) + stepOnHeight;

            foreach (ContactPoint2D p in collision.contacts)
            {
                if (p.point.y < judgePos)
                {
                    ObjectCollision o = collision.gameObject.GetComponent<ObjectCollision>();
                    if (o != null)
                    {
                        otherJumpHeight = o.boundHeight;    //踏んづけたものから跳ねる高さを取得する
                        o.playerStepOn = true;        //踏んづけたものに対して踏んづけた事を通知する
                        jumpPos = transform.position.y; //ジャンプした位置を記録する
                        isOtherJump = true;
                        isJump = false;
                        jumpTime = 0.0f;
                    }
                    else
                    {
                        Debug.Log("ObjectCollisionが付いてないよ!");
                    }
                }
                else
                {
                    ReceiveDamage(true);
                    break;
                }
            }
        }
    }


    private void OnTriggerEnter2D(Collider2D collision)
    {
        if(collision.tag == deadAreaTag)
	{
            ReceiveDamage(false);
	}
	else if(collision.tag == hitAreaTag)
	{
            ReceiveDamage(true);
	}
    }
    #endregion
}