ActionTowerDefense/ActionTowerDefense/Assets/Scripts/SoulCollector.cs

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

public class SoulCollector : MonoBehaviour
{
    public PlayerController player;

    private void Awake()
    {
        player = GetComponentInParent<PlayerController>();
    }

    private void OnTriggerEnter(Collider other)
    {
        Soul soul = other.GetComponentInParent<Soul>();
        if (soul)
        {
            if (player == null)
            {
                player = GetComponentInParent<PlayerController>();
            }
            soul.BeCollect(player.playerId);
        }
    }
}