using UnityEngine;

public class HUDBase : MyCoroutine
{
    protected RectTransform m_RectTransform, m_CanvasRect;
    protected Transform m_Target;
    protected Camera m_Camera;

    protected float OffTime;
    protected bool isUpdate = true;

    bool isRect = false, isCanvasRect = false, isMainCam = false, isTarget = false;

    void Init()
    {
        if (!isRect)
        {
            m_RectTransform = GetComponent<RectTransform>();
            isRect = m_RectTransform;
        }
        if (!isCanvasRect)
        {
            m_CanvasRect = GetComponentInParent<Canvas>().GetComponent<RectTransform>();
            isCanvasRect = m_CanvasRect;
        }
        if (!isMainCam)
        {
            m_Camera = Camera.main;
            isMainCam = m_Camera;
        }
    }

    public void Set_Target(Transform _target)
    {
        Init();
        m_Target = _target;
        isTarget = m_Target;
    }

    void Update()
    {
        if (isUpdate && isTarget && isCanvasRect && isMainCam)
            Set_Pos();

        if (OffTime > 0f)
        {
            OffTime -= Time.deltaTime;
            if (OffTime <= 0f)
                Off(false);
        }
    }

    protected void Set_Pos()
    {
        Vector2 ViewportPosition = m_Camera.WorldToViewportPoint(m_Target.position);
        Vector2 WorldObject_ScreenPosition = new Vector2(
            (ViewportPosition.x * m_CanvasRect.sizeDelta.x) - (m_CanvasRect.sizeDelta.x * 0.5f),
            (ViewportPosition.y * m_CanvasRect.sizeDelta.y) - (m_CanvasRect.sizeDelta.y * 0.5f) - 15f);
        m_RectTransform.anchoredPosition = WorldObject_ScreenPosition;
    }

    public static string Get_TextColor(eAttackType _attacktype)
    {
        switch (_attacktype)
        {
            default:
            case eAttackType.Physics:
                return "<color=#FFFFFF>";
            case eAttackType.Magic:
                return "<color=#FF8B8B>";
            case eAttackType.Pure:
                return "<color=#F53B96>";
        }
    }

    public void Off(bool deltarget)
    {
        gameObject.SetActive(false);
        if (deltarget)
        {
            m_Target = null;
            isTarget = false;
        }
        Init();
        m_RectTransform.anchoredPosition = Vector3.one * 10000f; // 멀리 보내야 다음에 켜질 때 깜빡임 없어짐
    }
}