SDM_LethalCompany_Mod/ScarletMansion/ScarletMansion/GamePatch/Managers/KnightSpawnManager.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using UnityEngine;
using DunGen;

namespace ScarletMansion {

  public class KnightSpawnManager : MonoBehaviour, IDungeonCompleteReceiver  {

    public static KnightSpawnManager Instance { get; private set; }

    public List<KnightSpawnPoint> spawnPoints;
    public List<KnightSpawnPoint> unusedSpawnPoints;

    public int lastKnightSeenPlayer = -1;
    public bool disableNextKnightSpecialSpawn;

    void Awake(){
      Instance = this;
    }

    public void OnDungeonComplete(Dungeon dungeon) {
      var points = dungeon.GetComponentsInChildren<KnightSpawnPoint>();
      spawnPoints = points.ToList();
      for(var i = 0; i < spawnPoints.Count; ++i){
        spawnPoints[i].index = i;
      }

      unusedSpawnPoints = points.ToList();
      Plugin.logger.LogDebug($"Found {spawnPoints.Count} spawn points for the knight");
    }

    public int GetSpawnPointIndex(){
      if (disableNextKnightSpecialSpawn) {
        disableNextKnightSpecialSpawn = true;
        return -1;
      }

      if (unusedSpawnPoints.Count == 0) return -1;

      // cause it would be funny
      if (lastKnightSeenPlayer >= 0){
        var tempitem = spawnPoints[lastKnightSeenPlayer];
        if (tempitem.gameObject.activeInHierarchy){
          Plugin.logger.LogDebug($"Using the last knight {tempitem.index} that saw a player");
          unusedSpawnPoints.Remove(tempitem);
          lastKnightSeenPlayer = -1;
          return tempitem.index;
        }

      } 

      var index = UnityEngine.Random.Range(0, unusedSpawnPoints.Count);
      var item = unusedSpawnPoints[index];
      unusedSpawnPoints.RemoveAt(index);

      return item.index;
    }

    public Transform GetSpawnPointTransform(int index){
      return spawnPoints[index].transform;
    }


  }
}