using UnityEngine;
using System.Collections;
[System.Serializable]
public class Boundary
{
    public float xMin, xMax, zMin, zMax;
}
public class PlayerController : MonoBehaviour
{
    public float speed;
    public float tilt;
    public float fireRate;

    public Boundary boundary;
    public GameObject shot;
    public Transform shotSpawn;

    private float nextFire;
    private AudioSource audioSource;
    private Rigidbody rb;

    // Use this for initialization
    void Start ()
    {
        audioSource = GetComponent<AudioSource>();
        rb = GetComponent<Rigidbody>();
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetButton ("Fire1") && Time.time > nextFire)
        {
            nextFire = Time.time + fireRate;
            Instantiate(shot, shotSpawn.position, shotSpawn.rotation);
            audioSource.Play();
        }
    }

    // Use this for physics based movement
    void FixedUpdate()
    {
        float moveHorizontal = Input.GetAxisRaw("Horizontal");
        float moveVertical = Input.GetAxisRaw("Vertical");

        Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
        rb.velocity = movement * speed;
        rb.position = ClampPosition(rb.position, boundary);

        rb.rotation = Quaternion.Euler(0.0f, 0.0f, rb.velocity.x * -tilt);
    }

    Vector3 ClampPosition(Vector3 currentPos,Rect boundry) {
        Vector3 newPos = currentPos;
        newPos.x = Mathf.Clamp(currentPos.x, boundry.xMin, boundry.xMax);
        newPos.z = Mathf.Clamp(currentPos.z, boundry.zMin, boundry.zMax);
        return newPos;
    }
}