using Thousandto.Core.RootSystem;
using Thousandto.Core.Base;
using Thousandto.Plugins.Common.UniScene;
using System;
using System.Collections.Generic;

using System.Text;
using UnityEngine;
using Thousandto.Core.Support;

namespace Thousandto.Plugins.PathGrid
{
    /// <summary>
    /// 路标
    /// </summary>
    public class Landmark : MonoBehaviour {
        static Landmark _sharedInstance = null;
        public float m_size = 0.1f;
        public static Landmark sharedInstance {
            get {
                if ( _sharedInstance == null ) {
                    var go = new GameObject( typeof( Landmark ).Name );
                    go.transform.parent = AppRoot.Transform;
                    _sharedInstance = go.AddComponent<Landmark>();
                }
                return _sharedInstance;
            }
        }

        List<Vector3> m_points = new List<Vector3>();

        public void Clear() {
            m_points.Clear();
        }

        public void AddPoint( Vector3 pt ) {
            m_points.Add( pt );
        }

        public void AddPoints(List<Vector3> pts)
        {
            pts.ForEach(pt => m_points.Add(pt));
        }

        static int colorIndex = 0;
        void OnDrawGizmos()
        {
            colorIndex = 0;
            m_points.ForEach(
                pt =>
                {
                    Gizmos.color = ColorTable.Index(colorIndex);
                    if (colorIndex < m_points.Count - 1)
                    {
                        Gizmos.DrawSphere(pt, m_size);
                    }
                    else
                    {
                        Gizmos.DrawSphere(pt, m_size * 2);
                    }
                    colorIndex++;
                }
            );
        }
    }
}