using UnityEngine;

public class Gun : MonoBehaviour {

    public float damage = 10f;
    public float range = 100f;
    public float fireRate = 15f;
    public bool autoMode = true;
    public bool singleMode = false;

    public Camera fpsCam;
    public ParticleSystem muzzleFlash;
    public GameObject impactEffect;
    public float impactForce = 30f;

    private float nextTimeToFire = 0f;

    // Update is called once per frame
    void Update () {
        if (Input.GetButton("ChangeFireStyle"))
        {
            if (autoMode == false)
            {
                autoMode = true;
            }
            if (singleMode == false)
            {
                singleMode = true;
            }
        }

        if (autoMode == true)
        {
            if (Input.GetButton("Fire1") && Time.time >= nextTimeToFire)
            {
                nextTimeToFire = Time.time + 1f / fireRate;
                Shoot();
            }
        }

        if (autoMode == false)
        {
            if (Input.GetButtonDown("Fire1") && Time.time >= nextTimeToFire)
            {
                nextTimeToFire = Time.time + 1f / fireRate;
                Shoot();
            }

        }

    }
    void Shoot()
    {
        muzzleFlash.Play();
        RaycastHit hit;
        if (Physics.Raycast(fpsCam.transform.position, fpsCam.transform.forward, out hit, range))
        {
            Debug.Log(hit.transform.name);

            Target target = hit.transform.GetComponent<Target>();
            if (target != null)
            {
                target.TakeDamage(damage);
            }

            if (hit.rigidbody != null)
            {
                hit.rigidbody.AddForce(-hit.normal * impactForce);
            }

            GameObject impactGO = Instantiate(impactEffect, hit.point, Quaternion.LookRotation(hit.normal));
            Destroy(impactGO, 2f);
        }
    }
}