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

public class PlayerService : Singleton<PlayerService>
{
    public Dictionary<string, Player> Players;

    public void Start()
    {
        Players = GameObject
            .FindGameObjectsWithTag("Player")
            .ToDictionary(player => player.name, player => player.GetComponent<Player>());
    }
}
public class Enemy : MonoBehaviour
{
    void Update()
    {
        if(Input.GetKeyDown(KeyCode.Space))
        {
            PlayerService.Instance.Players["Player1"]?.DoSomething(this);
        }
        else if(Input.GetKeyDown(KeyCode.LeftShift))
        {
            PlayerService.Instance.Players["Player2"]?.DoSomething(this);
        }
    }
}

public class Player : MonoBehaviour
{
    public void DoSomething(Enemy enemy)
    {
        Debug.Log($"{name} was told to do something by {enemy.name}");
    }
}