Preventing float overflow on endless runner type of game

If the character is moving against the world, instead of the world moving against the player also known as treadmill-type mechanism, there's a likely chance that the player's location could overflow the float's limitation.


Here's a way to deal with that problem:

using UnityEngine;
using System.Collections;

public class CameraRunnerScript : MonoBehaviour {

    public Transform player;

    // Update is called once per frame
    void Update () 
    {
        MoveCamera ();

        float currentCameraX = this.transform.position.x;

        // this prevents overflowing the float, reset the camera
        if (currentCameraX > 100) 
        {
            // reset the player position
            this.player.transform.position = new Vector3(0, player.position.y, 0);


            MoveCamera ();      


            // make all spawned object follow the camera's new position
            var grounds = GameObject.FindGameObjectsWithTag("Ground");
            foreach (var item in grounds) 
            {
                var delta = item.transform.position.x - currentCameraX;
                item.transform.position = new Vector3(this.transform.position.x + delta, item.transform.position.y, 0);
            }


        }
    }


    // move the camera based on player's position
    void MoveCamera ()
    {
        this.transform.position = new Vector3 (this.player.position.x + 6, 0, -10);
    }


}