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

public class UI_BuildInfo : MonoBehaviour
{
    public int buildId;
    public Action<int> touchDownAC = null;
    public Action<int> touchUpAC = null;

    /// <summary>
    /// 按下
    /// </summary>
    private void OnMouseDown()
    {
        if (IsPointerOverUIObject())
        {
            return;
        }

        if (touchDownAC != null)
        {
            touchDownAC(buildId);
        }
    }

    /// <summary>
    /// 抬起
    /// </summary>
    private void OnMouseUp()
    {
        if (IsPointerOverUIObject())
        {
            return;
        }

        if (touchUpAC != null)
        {
            touchUpAC(buildId);
        }
    }

    /// <summary>
    /// 是点否在UI上
    /// </summary>
    /// <returns>结果</returns>
    private bool IsPointerOverUIObject()
    {
        PointerEventData eventDataCurrentPosition = new PointerEventData(EventSystem.current);
        eventDataCurrentPosition.position = new Vector2(Input.mousePosition.x, Input.mousePosition.y);

        List<RaycastResult> results = new List<RaycastResult>();
        EventSystem.current.RaycastAll(eventDataCurrentPosition, results);

        return results.Count > 0;
    }
}