something.cs

//WASD to orbit, left Ctrl/Alt to zoom
using UnityEngine;
 
public class KeyboardIsometric : MonoBehaviour
{
	public float speed = 29.0F;
    public float rotationSpeed = 100.0F;
	public GameObject target;
	public GameObject gLight;
	public bool isController = false;
	
    void Update() {
		Vector3 new_position = new Vector3(0,0, -30.0f);
		
		if(isController){	
        	float translation_y = Input.GetAxis("Vertical") * speed;
			float translation_x = Input.GetAxis("Horizontal") * speed;
			translation_x *= Time.deltaTime;
			translation_y *= Time.deltaTime;
			target.transform.Translate(translation_x, translation_y, 0);
		}
        //float rotation = Input.GetAxis("Horizontal") * rotationSpeed;
        //rotation *= Time.deltaTime;
        
        //target.transform.Rotate(0, rotation, 0);
		
		new_position.x = target.transform.position.x + 5.0f;
		new_position.y = target.transform.position.y + 5.0f;
		new_position.z = -45.0f;
		
		transform.position = new_position;
		//transform.LookAt(target.transform);
    }
}