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

public class ExplosionOnClick : MonoBehaviour
{
    [Header("Settings")]
    public GameObject explosionEffect;  // 爆炸特效预制体
    public float explosionRadius = 5f;   // 爆炸影响范围
    public float explosionForce = 700f;  // 爆炸力度
    public float damage = 50f;           // 爆炸伤害值
    public LayerMask affectedLayers;     // 受影响的层级

    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            CreateExplosion();
        }
    }

    void CreateExplosion()
    {
        // 通过射线检测获取鼠标点击位置
        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        if (Physics.Raycast(ray, out RaycastHit hit))
        {
            // 实例化爆炸特效
            if (explosionEffect != null)
            {
                GameObject effect = Instantiate(
                    explosionEffect,
                    hit.point,
                    Quaternion.identity
                );
                Destroy(effect, 2f);  // 2秒后自动销毁特效
            }

            // 检测爆炸范围内的碰撞体
            Collider[] colliders = Physics.OverlapSphere(
                hit.point,
                explosionRadius,
                affectedLayers
            );

            foreach (Collider hitCollider in colliders)
            {
                // 施加物理力
                Rigidbody rb = hitCollider.GetComponent<Rigidbody>();
                if (rb != null)
                {
                    rb.AddExplosionForce(
                        explosionForce,
                        hit.point,
                        explosionRadius,
                        3f,
                        ForceMode.Impulse
                    );
                }

                // 造成伤害（可选）
                // Health health = hitCollider.GetComponent<Health>();
                // if (health != null)
                // {
                //     float distance = Vector3.Distance(hit.point, hitCollider.transform.position);
                //     float damageMultiplier = 1 - Mathf.Clamp01(distance / explosionRadius);
                //     health.TakeDamage(damage * damageMultiplier);
                // }
            }
        }
    }

    // 在Scene视图中显示爆炸范围
    void OnDrawGizmosSelected()
    {
        Gizmos.color = Color.red;
        Gizmos.DrawWireSphere(transform.position, explosionRadius);
    }
}