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

/// <summary>
/// 被攻击闪光
/// </summary>
public class BeAttackFlash : MonoBehaviour
{
    private List<Shader> mOldShaders = new List<Shader>();
    private SkinnedMeshRenderer[] mRenders = null;

    /// <summary>
    /// 闪烁中
    /// </summary>
    private bool mFlashing = false;

    /// <summary>
    /// 时间
    /// </summary>
    private float mTime = 0;

    /// <summary>
    /// 闪烁
    /// </summary>
    public void Flash(float time = 0.3f, float r = 1.0f, float g = 0.1f, float b = 0.1f)
    {
        mTime = time;

        if (mFlashing)
        {
            return;
        }
        mFlashing = true;

        if (mRenders == null || mRenders.Length == 0)
        {
            mRenders = gameObject.GetComponentsInChildren<SkinnedMeshRenderer>();
            for (int i = 0; i < mRenders.Length; i++)
            {
                mOldShaders.Add(mRenders[i].material.shader);
                mRenders[i].material.shader = Shader.Find("Battle/BeAttackFlashColor");
                mRenders[i].material.SetColor("_FlashColor", new Color(r, g, b));
            }
        }
        else
        {
            for (int i = 0; i < mRenders.Length; i++)
            {
                mRenders[i].material.shader = Shader.Find("Battle/BeAttackFlashColor");
                mRenders[i].material.SetColor("_FlashColor", new Color(r, g, b));
            }
        }
    }

    /// <summary>
    /// 恢复默认Shader
    /// </summary>
    public void ResetShader()
    {
        for (int i = 0; i < mRenders.Length; i++)
        {
            mRenders[i].material.shader = mOldShaders[i];
        }
    }

    // Update is called once per frame
    void Update()
    {
        if (mFlashing == false)
        {
            return;
        }

        mTime -= Time.deltaTime;
        if (mTime <= 0)
        {
            ResetShader();
            mFlashing = false;
        }
    }
}