using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using DG;
using DG.Tweening;

/// <summary>
/// 描述：
/// 作者：WJ
/// </summary>
public class HpbarTip : MonoBehaviour
{
    public enum HpTweenType
    {
        Default,        // 默认的抛物线 普通伤害
        High,           // 高抛物线 速度快 弱点伤害
        Up,             // 向上的 暴击 向上消失
        Down,           // 向下的 抵抗 向下消失
    }
    /// <summary>
    /// 角色
    /// </summary>
    private Role mRole = null;

    /// <summary>
    /// 文字
    /// </summary>
    private Text mText = null;

    /// <summary>
    /// 自身Transform
    /// </summary>
    private RectTransform mRectTransform = null;

    /// <summary>
    /// 类型
    /// </summary>
    private int mType = 0;

    /// <summary>
    /// 
    /// </summary>
    private Camera mUICamera = null;

    /// <summary>
    /// 父节点RectTransform
    /// </summary>
    private RectTransform mRootRectTransform = null;

    /// <summary>
    /// 颜色
    /// </summary>
    private Color mColor;

    /// <summary>
    /// 初始化
    /// </summary>
    public void Init(RectTransform rect, Role role, int val, HpTweenType htType, Color color, float liveTime = 1.0f)
    {
        mRootRectTransform = rect;
        mRole = role;
        mText = transform.GetComponentInChildren<Text>();
        mRectTransform = transform as RectTransform;
        mColor = color;
        mText.color = color;
        mText.text = val.ToString();
        mText.rectTransform.localScale = Vector3.one;
        mRectTransform.anchoredPosition = World2UI(mRole.transform.position + Vector3.up * 2) + Vector2.right * mText.preferredWidth * 0.5f;
        TweenFuncitonByType(htType);
        Destroy(gameObject, liveTime);
    }

    /// <summary>
    /// 更新
    /// </summary>
    private void FixedUpdate()
    {
        //if (mText != null && mRectTransform != null)
        //{
        //    mColor.a -= Time.deltaTime * 0.33f;
        //    mText.color = mColor;
        //    mRectTransform.anchoredPosition3D += Vector3.up * Time.deltaTime * Screen.height * 0.2f;
        //}
    }

    private void TweenFuncitonByType(HpTweenType htType)
    {
        Sequence s = DOTween.Sequence();
        switch (htType)
        {
            case HpTweenType.Default:
                mText.rectTransform.DOScale(1, 1.0f);
                s.Append(mRectTransform.DOAnchorPos3D(mRectTransform.anchoredPosition3D + Vector3.up * (Screen.height / 10), 0.3f).SetEase(Ease.OutCirc));
                s.Append(mRectTransform.DOAnchorPos3D(mRectTransform.anchoredPosition3D - Vector3.up * (Screen.height / 4), 0.7f).SetEase(Ease.Linear));
                s.Insert(0.5f, mText.DOColor(new Color(mColor.r, mColor.g, mColor.b, 0), 0.5f).SetEase(Ease.OutCirc));
                s.PlayForward();
                break;
            case HpTweenType.High:
                mText.rectTransform.DOScale(1.5f, 0.2f);
                s.Append(mRectTransform.DOAnchorPos3D(mRectTransform.anchoredPosition3D + Vector3.up * (Screen.height / 5), 0.3f).SetEase(Ease.OutCirc));
                s.Append(mRectTransform.DOAnchorPos3D(mRectTransform.anchoredPosition3D - Vector3.up * (Screen.height / 3), 0.7f).SetEase(Ease.Linear));
                s.Insert(0.5f, mText.DOColor(new Color(mColor.r, mColor.g, mColor.b, 0), 0.5f).SetEase(Ease.OutCirc));
                s.PlayForward();
                break;
            case HpTweenType.Up:
                mText.rectTransform.DOScale(2f, 0.3f);
                s.Append(mRectTransform.DOAnchorPos3D(mRectTransform.anchoredPosition3D + Vector3.up * (Screen.height / 5), 1));
                s.Insert(0.5f, mText.DOColor(new Color(mColor.r, mColor.g, mColor.b, 0), 0.5f).SetEase(Ease.OutCirc));
                break;
            case HpTweenType.Down:
                mText.rectTransform.DOScale(1.3f, 0.3f);
                s.Append(mRectTransform.DOAnchorPos3D(mRectTransform.anchoredPosition3D - Vector3.up * (Screen.height / 3), 1));
                s.Insert(0.5f, mText.DOColor(new Color(mColor.r, mColor.g, mColor.b, 0), 0.5f).SetEase(Ease.OutCirc));
                break;
        }
    }

    /// <summary>
    /// 世界坐标转成UI坐标
    /// </summary>
    /// <param name="wpos">世界坐标</param>
    /// <returns>UI坐标</returns>
    public Vector2 World2UI(Vector3 wpos)
    {
        if(Camera.main == null)
        {
            return Vector2.zero;
        }

        //世界坐标 -> ViewPort坐标 
        Vector2 viewPos = Camera.main.WorldToViewportPoint(wpos);

        //ViewPort坐标 -> UGUI坐标   	
        return new Vector2(mRootRectTransform.rect.width * viewPos.x, mRootRectTransform.rect.height * viewPos.y);
    }
}