Bullets flying in a random direction.

Questions & Answers
1

Hey so, I am currently struggling to set up my bullets travelling.

The ship that fires the bullets rotates and flys on X/Z axis which I realise is dumb. Either way, when I shoot my bullets they sometimes behave erratically.

The player has a location for where to spawn the bullets and this is the code to spawn the bullets.

	void Shoot ()
	{
		var bulletToShoot = (GameObject)Instantiate (
			                    bullet,
			                    bulletSpawnLocation.position,
			                    bulletSpawnLocation.rotation);

		Destroy (bulletToShoot, 8.0f);
	}

Next the bullet itself is a prefab with the bullet controller code as such:

	void Update () {
		transform.Rotate (0, player.transform.rotation.y, 0);
		transform.Translate (0, 0, bulletSpeed * Time.deltaTime);
		bullet.transform.position += transform.forward * Time.deltaTime * bulletSpeed;


	}

I am unsure why it does this so any help would be appreciated.

2

You are rotating your bullets constantly in your update function. So just rotate it once at Start() and then move forward.

void Start(){
         transform.Rotate (0, player.transform.rotation.y, 0);
}
void Update () {
         bullet.transform.position += transform.forward * Time.deltaTime * bulletSpeed;
  
     }
3

I can’t test right now but I believe your problem is that you are using “transform.forward”, and since you are rotating your game object the forward direction in changing.

bullet.transform.position += transform.forward * Time.deltaTime * bulletSpeed;

You could possibly solve storing the “forward” when the bullet is instantiated and then using that value in your calculation.

Vector3 _localForward;

void Start() {
  _localForward = transform.forward;
}

void Update() {
  ...
  bullet.transform.position += _localForward * Time.deltaTime * bulletSpeed;
}

Let me know if it works for you.