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

public class GeneratorScript : MonoBehaviour {

public GameObject[] availableRooms;
 
public List<GameObject> currentRooms;
 
private float screenWidthInPoints;

public GameObject[] availableObjects;
public List<GameObject> objects;
 
public float objectsMinDistance = 5.0f;
public float objectsMaxDistance = 10.0f;
 
public float objectsMinY = -1.4f;
public float objectsMaxY = 1.4f;
 
public float objectsMinRotation = -45.0f;
public float objectsMaxRotation = 45.0f;


// Use this for initialization
void Start () {
 float height = 2.0f * Camera.main.orthographicSize;
 screenWidthInPoints = height * Camera.main.aspect;
 print(screenWidthInPoints);
}
 
// Update is called once per frame
void Update () {
 
}

void FixedUpdate () {
 
 GenerateRoomIfRequred();

 GenerateObjectsIfRequired();
}


void AddRoom(float farhtestRoomEndX)
{
 //1
 int randomRoomIndex = Random.Range(0, availableRooms.Length);
 
 //2
 GameObject room = (GameObject)Instantiate(availableRooms[randomRoomIndex]);
 
 //3
 float roomWidth = room.transform.Find("floor").localScale.x;
 
 //4
 float roomCenter = farhtestRoomEndX + roomWidth * 0.5f;
 
 //5
 room.transform.position = new Vector3(roomCenter, 0, 0);
 
 //6
 currentRooms.Add(room);    
}

void GenerateRoomIfRequred()
{
 //1
 List<GameObject> roomsToRemove = new List<GameObject>();
 
 //2
 bool addRooms = true;
 
 //3
 float playerX = transform.position.x;
 
 //4
 float removeRoomX = playerX - screenWidthInPoints;
 
 //5
 float addRoomX = playerX + screenWidthInPoints;
 
 //6
 float farhtestRoomEndX = 0;
 
 foreach(var room in currentRooms)
 {
  //7
  float roomWidth = room.transform.Find("floor").localScale.x;
  float roomStartX = room.transform.position.x - (roomWidth * 0.5f);
  float roomEndX = roomStartX + roomWidth;
   
  //8
  if (roomStartX > addRoomX)
   addRooms = false;
   
  //9
  if (roomEndX < removeRoomX)
   roomsToRemove.Add(room);
   
  //10
  farhtestRoomEndX = Mathf.Max(farhtestRoomEndX, roomEndX);
 }
 
 //11
 foreach(var room in roomsToRemove)
 {
  currentRooms.Remove(room);
  Destroy(room);
 }
 
 //12
 if (addRooms)
  AddRoom(farhtestRoomEndX);
}

void AddObject(float lastObjectX)
{
 //1
 int randomIndex = Random.Range(0, availableObjects.Length);
 
 //2
 GameObject obj = (GameObject)Instantiate(availableObjects[randomIndex]);
 
 //3
 float objectPositionX = lastObjectX + Random.Range(objectsMinDistance, objectsMaxDistance);
 float randomY = Random.Range(objectsMinY, objectsMaxY);
 obj.transform.position = new Vector3(objectPositionX,randomY,-5);
 
 //4
 float rotation = Random.Range(objectsMinRotation, objectsMaxRotation);
 obj.transform.rotation = Quaternion.Euler(Vector3.forward * rotation);
 
 //5
 objects.Add(obj);
}

void GenerateObjectsIfRequired()
{
 //1
 float playerX = transform.position.x;
 float removeObjectsX = playerX - screenWidthInPoints;
 float addObjectX = playerX + screenWidthInPoints;
 float farthestObjectX = 0;
 
 //2
 List<GameObject> objectsToRemove = new List<GameObject>();
 
 foreach (var obj in objects)
 {
  //3
  float objX = obj.transform.position.x;
   
  //4
  farthestObjectX = Mathf.Max(farthestObjectX, objX);
   
  //5
  if (objX < removeObjectsX)
   objectsToRemove.Add(obj);
 }
 
 //6
 foreach (var obj in objectsToRemove)
 {
  objects.Remove(obj);
  Destroy(obj);
 }
 
 //7
 if (farthestObjectX < addObjectX)
  AddObject(farthestObjectX);
}
}

там типа изначально предполагается что у меня есть несколько вариантов комнат

но это не точно

там ещё объекты генерируются, но это не так важно, основная проблема с комнатами