void SpawnMissile()
{
var settings = Settings.Instance;
var speed = settings.projectileSpeedLevels[projectileSpeedLevel - 1];
var accuracy = settings.accuracyLevels[accuracyLevel - 1];
var explosionSize = settings.explosionSizeLevels[explosionSizeLevel - 1];
GameObject missileObject = Instantiate(missile, muzzle.position, this.transform.rotation);
MissileBehavior mb = missileObject.GetComponent <MissileBehavior>();
mb.Initialize(speed, accuracy, explosionSize);
lastShotTime = Time.time;
}