using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using RPGCreationKit;
using UnityEngine.UI;
using TMPro;
using System;
using RPGCreationKit.Player;
using UnityEngine.EventSystems;

namespace RPGCreationKit
{

    public class CompassBar : MonoBehaviour
    {
        public GameObject IconPrefab;
        List<QuestMarker> questMarkers = new List<QuestMarker>();
        public RawImage CompassImage;
        public Transform Player;
        public float MaxDistance = 200f;
        float compassUnit;


        // Start is called before the first frame update
        void Start() {
            compassUnit = CompassImage.rectTransform.rect.width / 360f;
            
        }

        // Update is called once per frame
        private void Update() {
            CompassImage.uvRect = new Rect (Player.localEulerAngles.y / 360f, 0f, 1f, 1f);

            foreach (QuestMarker marker in questMarkers) {
                marker.image.rectTransform.anchoredPosition = GetPosOnCompass(marker);
                float dst = Vector2.Distance(new Vector2(Player.transform.position.x, Player.transform.position.z), marker.position);
                float scale = 0f;
                if (dst < MaxDistance) {
                    scale = 1f - (dst / MaxDistance);
                }
                marker.image.rectTransform.localScale = Vector3.one * scale;
            }
            
        }

        public void AddQuestMarker(QuestMarker marker) {
            GameObject NewMarker = Instantiate(IconPrefab, CompassImage.transform);
            marker.image = NewMarker.GetComponent<Image>();
            marker.image.sprite = marker.icon;
            questMarkers.Add(marker);
        }

        public void RemoveQuestMarker(QuestMarker marker) {
            marker.image.rectTransform.localScale = Vector3.one * 0f;
            marker.image.sprite = null;
            questMarkers.Remove(marker);
        }

        Vector2 GetPosOnCompass(QuestMarker marker) {
            Vector2 playerPos = new Vector2(Player.transform.position.x, Player.transform.position.z);
            Vector2 playerFwd = new Vector2(Player.transform.forward.x, Player.transform.forward.z);

            float angle = Vector2.SignedAngle(marker.position - playerPos, playerFwd);
            return new Vector2(compassUnit * angle, 0f);
        }
    }
}