ZoneCheckpoint.cs

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

public class ZoneCheckpoint : MonoBehaviour
{
    public static ZoneCheckpoint Find (string checkpointId)
    {
        foreach (var checkpoint in FindObjectsOfType<ZoneCheckpoint>())
        {
            if (checkpoint.name == checkpointId)
                return checkpoint;
        }

        return null;
    }

    void OnDrawGizmos ()
    {
        Gizmos.DrawIcon(transform.position, "flag", true);
    }

    void Start ()
    {
        collider.enabled = Game.IsServer;
    }

    void OnTriggerEnter (Collider other)
    {
        if (other.CompareTag("Avatar"))
        {
            int avatarPeerIndex = Sync.GetOwner(other.gameObject);
            string playerId = Game.GetPlayerID(avatarPeerIndex);

            if (playerId != null)
            {
                GameServer.Instance.PushPlayerData(playerId, "Location", "LastCheckpoint", name);
            }
        }
    }
}