Racing Game Checkpoint Spawn

Need some help with the checkpoint system. Now the scripts uses an Index, and I want the player to teleport to the last checkpoint it passed by using said index. Here are the 3 scripts that is used for the Start/Finish, the checkpoints, and the player:

Code (CSharp):

1. public class LapSystem : MonoBehaviour
2. {
3.     public int lapNumber;
4.     public int CheckpointIndex;
5.  
6.     // Start is called before the first frame update
7.     void Start()
8.     {
9.         lapNumber = 1;
10.         CheckpointIndex = 0;
11.     }
12.  
13.     void OnTriggerEnter(Collider other)
14.     {
15.         if (other.gameObject.CompareTag("OutOfBounds"))
16.         {
17.            //Insert Respawn Gimmick Here
18.         }
19.     }
20. }

Code (CSharp):

1. public class CheckpointSystem : MonoBehaviour
2. {
3.     public int Index;
4.  
5.     void OnTriggerEnter(Collider other)
6.     {
7.         if (other.GetComponent<LapSystem>())
8.         {
9.             LapSystem Racer = other.GetComponent<LapSystem>();
10.  
11.             if(Racer.CheckpointIndex == Index + 1 || Racer.CheckpointIndex == Index - 1)
12.             {
13.                 Racer.CheckpointIndex = Index;
14.                 Debug.Log(Index);
15.             }
16.         }
17.     }
18. }

Code (CSharp):

1. public class CheckpointHandle : MonoBehaviour
2. {
3.     public int CheckpointAmt;
4.  
5.     void OnTriggerEnter(Collider other)
6.     {
7.         if (other.GetComponent<LapSystem>())
8.         {
9.             LapSystem Racer = other.GetComponent<LapSystem>();
10.  
11.             if(Racer.CheckpointIndex == CheckpointAmt)
12.             {
13.                 Racer.CheckpointIndex = 0;
14.                 Racer.lapNumber++;
15.                 Debug.Log(Racer.lapNumber);
16.             }
17.         }
18.     }
19. }

Any help is appreciated.

 

I would do it like this::
Checkpoints have a trigger-collider and send its checkpoint-ID. Then, if the car drives through a checkpoint, update its checkpoint. If it respawns, get you checkpoint-id and respawn it there.

Code is untested, but I think you know what I mean.

Code (CSharp):

1. public class CheckpointCode : MonoBehaviour
2. {
3.     public int number_of_cars; //Set this value at gamestart
4.     private int[] checkpoints;
5.  
6.     private void Start()
7.     {
8.         //With 4 cars: checkpoint = [] [] [] []
9.         checkpoints = new int[number_of_cars];
10.     }
11.  
12.     //Call from a Collider trigger.
13.     public void SetCheckpoint(int car_id, int checkpoint_id)
14.     {
15.         checkpoints[car_id] = checkpoint_id;
16.     }
17. }