public void Fire() {
        if (asset.projectile == null) {
            Debug.Log("No projectile set up for gun part " + asset.dbName + "!");
            return;
        }
        for (int i = 0; i < asset.projectileQuantity; ++i) {
            var p = GameObject.Instantiate(asset.projectile);
            p.layer = gameObject.layer;
            // Align projectile with the barrel.
            // TODO: add scatter
            p.transform.position = turret.transform.position;
            p.transform.eulerAngles = barrel.transform.eulerAngles;

            var rbod = p.GetComponent<Rigidbody>();
            rbod.useGravity = asset.useGravity;
            rbod.AddRelativeForce(0, launchVelocity, 0, ForceMode.VelocityChange);

            var comp = p.AddComponent<Projectile>();
            comp.damage = asset.damage;
            comp.debug = (i == 0 && Time.renderedFrameCount == 10);
        }
    }