MRClass/Assets/DrawingAir/Paint.cs

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

public class Paint : MonoBehaviour
{
    public GameObject trailPrefab;
    private TrailRenderer thisTrail;
    private Vector3 startPos;
    private Plane objPlane;
    private Vector3 TeacherPos;
    [SerializeField]
    private bool isStart = false;
    void Start()
    {
        MessageCenterController.Instance.Register(GameEnum.MESSAGE_REFRESH_LINE_TARGET_POS_DATA, RefreshData);
        MessageCenterController.Instance.Register(GameEnum.MESSAGE_DRAW_START, DrawStart);
        MessageCenterController.Instance.Register(GameEnum.MESSAGE_DRAW_END, DrawEnd);
        isStart = false;
    }

    private void OnDestroy()
    {
        MessageCenterController.Instance.UnRegister(GameEnum.MESSAGE_REFRESH_LINE_TARGET_POS_DATA, RefreshData);
        MessageCenterController.Instance.UnRegister(GameEnum.MESSAGE_DRAW_START, DrawStart);
        MessageCenterController.Instance.UnRegister(GameEnum.MESSAGE_DRAW_END, DrawEnd);
    }

    void DrawStart(System.Object o)
    {
        StartCoroutine(_DrawStart(o));
    }

    IEnumerator _DrawStart(System.Object o)
    {
        yield return new WaitForEndOfFrame();
        DrawData data = (DrawData)o;
        startPos = DrawingManager._instance.DrawPoint(); // 获取射线点
        GameObject g = Instantiate(trailPrefab, startPos, Quaternion.identity);
        // 加入绘制Stack
        DrawListManager._instance.AddBrush(g);
        thisTrail = g.GetComponent<TrailRenderer>();
        thisTrail.startColor = data.GetColor();
        thisTrail.endColor = data.GetColor();
        // thisTrail.widthMultiplier = data.size;
        isStart = true;
    }

    void DrawEnd(System.Object o)
    {
        isStart = false;
    }


    private void RefreshData(System.Object data)
    {
        if (GamePlayerData.Instance.room_data.IsReconnectOwner())
        {
            return;//如果是老师的话不执行
        }
        TeacherPos = (Vector3)data;
    }

    // Update is called once per frame
    void Update()
    {
        if (isStart)
        {
            Vector3 v;
            if (GamePlayerData.Instance.room_data.IsReconnectOwner())
            {
                v = DrawingManager.Instance.DrawPoint();
            }
            else
            {
                v = TeacherPos;
            }
            if (thisTrail)
            {
                thisTrail.transform.position = v;
            }
            
        }
    }
}