Need help to restrict players from shooting 'backwards'

I've created a script where the bullet shoots towards your mouse. My problem is that you can face right and still shoot left. I've tried a if statment that only executes if the angle is greater than x and less than x when you're facing left/right., so that you cant shoot otherwise.

I don't really know how eulerAngles or Quanterion works really...


A piece of the script:

Vector3 sp = Camera.main.WorldToScreenPoint(brl.transform.position);
Vector3 dir = (Input.mousePosition - sp).normalized;



Quaternion rotation = Quaternion.Euler(0, 0, Mathf.Atan2(dir.y, dir.x) * Mathf.Rad2Deg);

Debug.Log(rotation.z);

if ((rotation.z > 0.75f && rotation.z < 1 && chara.transform.rotation.y == 1) || (rotation.z > -0.5f && rotation.z < 1 && chara.transform.rotation.y == 1) || (rotation.z < 0.75f && rotation.z > 0 && chara.transform.rotation.y == 0) || (rotation.z < 0f && rotation.z < -0.5f && chara.transform.rotation.y == 0))
{
if (chara.GetComponent<WeaponChange>().lastwpn == "UZI")
{
barrel.transform.parent.Find("Fire").GetComponent<SpriteRenderer>().enabled = true;
}

if (chara.GetComponent<WeaponChange>().lastwpn == "AK")
{
barrelAK.transform.parent.Find("Fire").GetComponent<SpriteRenderer>().enabled = true;
}


ammo = ammo - 1;
brl.GetComponent<AudioSource>().Play();


bullet1 = Instantiate(bullet, brl.transform.position, rotation);

bullet1.tag = chara.GetComponent<WeaponChange>().lastwpn;
bullet1.GetComponent<Rigidbody2D>().velocity = dir * 1000 * Time.deltaTime;

Destroy(bullet1, 2f);
StartCoroutine(waitforfire());
}

 

You wont get help if you don't put code in code form. check the text editor options

 

sorry for double posting but i wanted to keep these posts separate.

just realized this is 2d -.- doh.

you need to just remember the last direction faced.

Code (CSharp):

1.  
2. public int LastKey;//1 = up, 2 = down, 3 = left, 4 = right
3.  
4. if (Input.GetKeyDown(KeyCode.S))
5. {
6. LastKey = 2;
7. }