Help with level initialisation

Unity Engine
1

I’m trying to make some sort of level builder that will read the level file and then build the level by instantiating prefabs.
Whatever, I’ve run into a few problems :face_with_spiral_eyes:

My current script:

using UnityEngine;
using System;
using System.Collections;
using System.IO;

public class LevelBuilder : MonoBehaviour {
	public Transform Platform;
	public Transform PlatformTurn;
	public Transform Rod;
	public Transform Ball;
	public Transform Crate;
	//And about 30 more
	
	
	void Start () {
		try {
            using (StreamReader levelReader = new StreamReader("Levels/TestLevel.txt")) {
                string obj;
				string pos;
				string rot;
                while (levelReader.Peek() == 1) {
					obj = levelReader.ReadLine();
					pos = levelReader.ReadLine(); //How do I convert this 3 word string to a vector3?
					rot = levelReader.ReadLine(); //How do I convert this 4 word string to a quaternion?
					
					if(obj == "Platform")
						Instantiate(Platform,pos,rot);
					else if(obj == "PlatformTurn")
						Instantiate(PlatformTurn,pos,rot);
					else if(obj == "Rod")
						Instantiate(Rod,pos,rot);
					else if(obj == "Ball")
						Instantiate(Ball,pos,rot);
					else if(obj == "Crate")
						Instantiate(Crate,pos,rot);
					//And about 30 more
					
					else 
						Debug.Log("The object could not be created");
                }
            }
        }
        catch (Exception fail) {
            Debug.Log("There was a problem reading the level file.");
            Debug.Log(fail.Message);
        }

	}
}

Can someone help me with these problems?

How do I convert the 3 word string to a vector3?
How do I convert the 4 word string to a quaternion?
Is there some way to get a variable by it’s name? The wall of if() is quite annoying.
I tried to use an Enumerator but I couldn’t find out how to link it to the variables

2

You use float.Parse(str) to change a string to a float.
to get the individual words from a group you use Split

I don’t really know a way to get a variable. You could use a dictionary to make it neater.