Generator.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.Scripting;

public class Generator : MonoBehaviour
{



    public GameObject prefab;
    public GameObject collisionBlock;

    public List<GameObject> collisionBlocks = new List<GameObject>();

    // Start is called before the first frame update
    void Start()
    {
        float x = 0,y = -3.5f,z = 0;
        for(int i = 0; i < 50; i++) { // Generate random placement.
            GameObject obj = collisionBlock.transform.gameObject;
            // obj.transform.position.Set(Random.Range(-6,6),-3.5f, i + 5);
            GameObject spanwed = Instantiate(obj,new Vector3(Random.Range(-6,6),-3.5f, i + 5),Quaternion.identity);
            collisionBlocks.Add(spanwed);
        }

    }

    // Update is called once per frame
    void Update()
    {
        
    }
}

PlayerMove.cs

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

public class PlayerMove : MonoBehaviour
{



    public GameObject playerObj;
    public Transform trans;
    public float speed;

    public GameObject collideObj;


    private Generator generator = new Generator();

    // Start is called before the first frame update
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {
        Vector3 pos = playerObj.transform.position;
        if (Input.GetKey(KeyCode.A) && !(pos.x < -5.9))
        {
            pos.Set(pos.x - 0.1f,pos.y,pos.z);
        }
        if (Input.GetKey(KeyCode.D) && (pos.x < 5.9))
        {
            pos.Set(pos.x + 0.1f,pos.y,pos.z);
        }



        if(Input.GetKeyDown(KeyCode.Space)) {
            pos.Set(pos.x,pos.y + 2, pos.z);
        }

        if(pos.y > -3.5) {
            pos.y -= 0.1f;
        }

        // if(!(collideObj.transform.position.x <= pos.x - 0.1f) && 
        // !(collideObj.transform.position.z <= pos.y - 0.1f) && 
        // !(collideObj.transform.position.z <= pos.y - 0.1f)) {
        //     pos.Set(pos.x, pos.y, pos.z + 0.1f);
        // }

        foreach (var obj in generator.collisionBlocks)
        { // Here is the collisionBlock being accesed, mcbabac (dave)
            if(!(obj.transform.position.x + 0.1f > pos.x - 0.1f) ||
        !(obj.transform.position.x - 1 < pos.x + 0.1f) ||
        !(obj.transform.position.z + 1 > pos.z - 0.1f) ||
        !(obj.transform.position.z - 1 < pos.z + 0.1f)) {
            pos.Set(pos.x, pos.y, pos.z + 0.1f);
        }
        }

        if(!(collideObj.transform.position.x + 0.1f > pos.x - 0.1f) ||
        !(collideObj.transform.position.x - 1 < pos.x + 0.1f) ||
        !(collideObj.transform.position.z + 1 > pos.z - 0.1f) ||
        !(collideObj.transform.position.z - 1 < pos.z + 0.1f)) {
            pos.Set(pos.x, pos.y, pos.z + 0.1f);
        }


//         if (Input.GetKey(KeyCode.W))
//         {
//             pos.Set(pos.x,pos.y + 0.1f,pos.z);
//         }
//         if (Input.GetKey(KeyCode.S) && !(pos.y < -3.4f))
//         {
//             pos.Set(pos.x,pos.y - 0.1f,pos.z);
//         }


        playerObj.transform.position = pos;
    }
}