using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour 
{
    public float speed;
    public float tilt;
    public float power;

    /** 
     * Every update perform tranlations and rotations based on user input.
     * */
    void FixedUpdate () {

        float moveHorizontal = Input.GetAxis ("Horizontal");
        float moveVertical = Input.GetAxis ("Vertical");

        Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
        rigidbody.velocity = movement * speed;

        // Add the tilt. (When this line is left out, rotation performs as expected)
        // When it is left in, the drone rotates but snaps back to it's original orientation on key release.
        rigidbody.rotation = Quaternion.Euler (rigidbody.velocity.z, 0.0f, rigidbody.velocity.x * -tilt);

        // Ascend.
        if (Input.GetKey ("t")){
            rigidbody.AddRelativeForce (Vector3.up * power);
        }

        // Descend.
        if (Input.GetKey ("g")) {
            rigidbody.AddRelativeForce (Vector3.down * power);
        }

        // Rotate clockwise.
        if (Input.GetKey ("h")) {
            transform.Rotate(0, 5, 0, Space.Self);
        }

        // Rotate anti-clockwise.
        if (Input.GetKey ("f")) {
            transform.Rotate(0, -5, 0, Space.Self);
        }
    }
}

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour 
{
    public float speed;
    public float tilt;
    public float power;

    /** 
     * Every update perform tranlations and rotations based on user input.
     * */
    void FixedUpdate () 
    {
        float moveHorizontal = Input.GetAxis ("Horizontal");
        float moveVertical = Input.GetAxis ("Vertical");

        Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
        rigidbody.velocity = movement * speed;

        // Add the tilt. (When this line is left out, rotation performs as expected)
        // When it is left in, the drone rotates but snaps back to it's original orientation on key release.
        rigidbody.rotation = Quaternion.Euler (rigidbody.velocity.z, 0.0f, rigidbody.velocity.x * -tilt);

        // Ascend.
        if (Input.GetKey ("t"))
        {
            rigidbody.AddRelativeForce (Vector3.up * power);
        }

        // Descend.
        if (Input.GetKey ("g")) {
            rigidbody.AddRelativeForce (Vector3.down * power);
        }

        // Rotate clockwise.
        if (Input.GetKey ("h")) 
        {
            transform.Rotate(0, 5, 0, Space.Self);
        }

        // Rotate anti-clockwise.
        if (Input.GetKey ("f")) 
        {
            transform.Rotate(0, -5, 0, Space.Self);
        }
    }
}