using UnityEngine;
using Photon.Pun;

public class AttackController : MonoBehaviourPunCallbacks
{
    public GameObject shotPoint;
    private float throwForce;
    private float throwAngle;
    // ★追加
    private GameObject targetMark;
    private Vector3 currentTargetPos;
    private float launchAngle = 75f;

    // ★追加
    void Start()
    {
        if (!photonView.IsMine)
        {
            return;
        }

        targetMark = GameObject.Find("TargetMark");
    }

    void Update()
    {
        if (!photonView.IsMine)
        {
            return;
        }

        if (InputManager.isa.Player.Throw.triggered)
        {
            //ThrowBomb(); // ★改良（コメントアウトでいったん止める）（ポイント）
            Targetshoot();
        }
    }

    void ThrowBomb()
    {
        throwForce = 10f;
        throwAngle = 45f;

        GameObject bomb = PhotonNetwork.Instantiate("Bomb", shotPoint.transform.position, Quaternion.identity);
        Rigidbody bombRb = bomb.GetComponent<Rigidbody>();
        Vector3 forceDirection = Quaternion.AngleAxis(-throwAngle, transform.right) * transform.forward;
        bombRb.AddForce(forceDirection * throwForce, ForceMode.VelocityChange);
    }

    // ★追加
    void Targetshoot()
    {
        // 画面中央の座標を計算
        Vector3 screenCenter = new Vector3(Screen.width / 2, Screen.height / 2, 0);

        // 画面中央からレイを飛ばす
        Ray ray = Camera.main.ScreenPointToRay(screenCenter);
        RaycastHit hit;

        if (Physics.Raycast(ray, out hit))
        {
            // クリックした瞬間、その場の座標を取得
            currentTargetPos = hit.point;
            targetMark.transform.position = hit.point;

            // 放物線軌道で発射
            Shoot();
        }
    }

    // ★追加
    void Shoot()
    {
        GameObject bomb = PhotonNetwork.Instantiate("Bomb", shotPoint.transform.position, Quaternion.identity);
        Rigidbody bombRb = bomb.GetComponent<Rigidbody>();

        // 取得した座標を使って方向と距離を計算
        Vector3 diff = currentTargetPos - shotPoint.transform.position;
        float h = diff.y; // 高低差
        diff.y = 0;
        float distance = diff.magnitude; // 水平距離
        float g = Physics.gravity.magnitude;
        float angle = launchAngle * Mathf.Deg2Rad;

        // 初速の計算
        float cosA = Mathf.Cos(angle);
        float tanA = Mathf.Tan(angle);

        // 分母が０以下にならないようにチェック
        float denominator = 2 * cosA * cosA * (distance * tanA - h);
        if (denominator <= 0)
        {
            return;
        }

        float velocity = Mathf.Sqrt((g * distance * distance) / denominator);

        // 速度ベクトルへの変換
        Vector3 velocityVec = diff.normalized * velocity * cosA;
        velocityVec.y = velocity * Mathf.Sin(angle);

        bombRb.linearVelocity = velocityVec;
    }
}