racesm/Assets/Scripts/GameManager.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using TMPro;
using UnityEditor.SearchService;
using UnityEngine;
using UnityEngine.SceneManagement;

public class GameManager : MonoBehaviour
{
    public int lapAmount;
    public GameObject[] checkpoints;
    public GameObject[] players;
    [HideInInspector] public List<string> playersFinished;
    [HideInInspector] public float[] playerTimes;
    [HideInInspector] public string[] playerTimesStr;
    int[] playerLaps;
    public TextMeshProUGUI lapCounter;
    public TextMeshProUGUI timeCounter;
    void Start()
    {
        // reset laps
        playerLaps = new int[players.Count()];
        playerTimes = new float[players.Count()];
        playerTimesStr = new string[players.Count()];

        for (int i = 0; i < playerLaps.Count(); i++)
        {
            playerLaps[i] = 1;
        }

        for (int i = 0; i < players.Count(); i++)
        {
            playerTimes[i] = 0.00000001f;
            playerTimesStr[i] = "0";
        }

        DontDestroyOnLoad(gameObject);
    }

    // Update is called once per frame
    void Update()
    {
        for (int i = 0; i < players.Count(); i++)
        {
            GameObject player = players[i];

            try
            {
                if (playersFinished.Contains(player.name) || playersFinished.Contains(player.name + " (player)"))
                    continue;
            }
            catch
            {
                return;
            }

            playerTimes[i] += Time.deltaTime;            

            bool isAI = true;
            if (player.GetComponent<PlayerController>().enabled)
                isAI = false;

            if (isAI)
            {
                bool isFinished = player.GetComponent<AgentController>().isFinished;

                if (isFinished)
                {
                    player.GetComponent<AgentController>().isFinished = false;
                    playerLaps[i] += 1;
                }
            }
            else
            {
                int checkpointsCollected = player.GetComponent<PlayerController>().checkpointsCollected;

                if (checkpointsCollected == checkpoints.Count())
                {
                    player.GetComponent<PlayerController>().checkpointsCollected = 0;

                    playerLaps[i] += 1;

                    if (playerLaps[i] <= lapAmount)
                        lapCounter.text = "Lap count: " + playerLaps[i] + "/" + lapAmount;
                }

                string strTimes =playerTimes[i].ToString();

                int seconds = (int)MathF.Floor(playerTimes[i]);
                int seperator = strTimes.IndexOf(",");
                string miliseconds;

                if (strTimes.Length < seperator + 4)
                    miliseconds = ",000";
                else
                    miliseconds = strTimes.Substring(seperator, 4);

                timeCounter.text = "Time: " + seconds + miliseconds;
            }

            if (playerLaps[i] > lapAmount)
            {
                if (isAI)
                {
                    playersFinished.Add(player.name);
                    player.GetComponent<AgentController>().enabled = false;
                }
                else
                    playersFinished.Add(player.name + " (player)");
                    player.GetComponent<PlayerController>().enabled = false;

                playerTimesStr[i] = playerTimes[i].ToString();
            }
        }


        // race finished
        if (playersFinished.Count() == players.Count())
        {
            // sort array
            float[] fTimes = new float[players.Count()];
            
            for (int i = 0; i < players.Count(); i++)
            {
                fTimes[i] = float.Parse(playerTimesStr[i]);
            }

            Array.Sort(fTimes);

            for (int i = 0; i < players.Count(); i++)
            {
                playerTimesStr[i] = fTimes[i].ToString();

                try
                {
                    playerTimesStr[i] = playerTimesStr[i].Substring(0, 7);
                }
                catch
                {

                }
            }
            SceneManager.LoadScene("WinScreen");
        }

    }
}