powerfun-unity/Assets/Scenes/Ride/Scripts/MiniMapPlayerController.cs

using Mapbox.Unity.Map;
using UnityEngine;

namespace Assets.Scenes.Ride.Scripts
{
    public class MiniMapPlayerController: MonoBehaviour
    {
        private AbstractPlayer _player;
        private AbstractMap _map;
        RectTransform RectRoot;
        GameObject arrow;
        Camera _minicamera;
        private void Awake()
        {
            _map = transform.parent.Find("MiniMap").GetComponent<AbstractMap>();
            _minicamera = transform.parent.Find("MiniCamera").GetComponent<Camera>();
            RectRoot = transform.parent.Find("SingleUI/Panel/MiniMap/MiniMap").GetComponent<RectTransform>();
            var parent = transform.parent.Find("SingleUI/Panel/MiniMap/MiniMap");
            arrow = Instantiate(Resources.Load<GameObject>("UI/Prefab/Ride/MiniArrow"), parent);
        }
        public void SetController(AbstractPlayer player)
        {
            _player = player;
        }
        float t = 1f;
        private void Update()
        {
            t -= Time.deltaTime;
            while (t < 0)
            {
                if (_player != null)
                {
                    transform.localPosition = _map.GeoToWorldPosition(_player.Currentlatlong);
                    var tr = arrow.GetComponent<RectTransform>();
                    Vector2 vp2 = _minicamera.WorldToViewportPoint(transform.localPosition);//将三维物体的世界坐标转换为视口坐标
                    tr.anchoredPosition = new Vector2((vp2.x * RectRoot.sizeDelta.x) - (RectRoot.sizeDelta.x * 0.5f), (vp2.y * RectRoot.sizeDelta.y) - (RectRoot.sizeDelta.y * 0.5f));
                }
                else
                {
                    DestroyImmediate(arrow);
                    //DestroyImmediate(gameObject);
                }
                t = 1;
            }
        }
    }
}