Straight Raycast Shooting

Questions & Answers
1

Can someone help me with my Raycast shooting.
Now it shoots kind of randomly, and I want to it shoot exactly straight.
Please help, I’ve tried everything.

var fireRate = 0.02;
var force = 10.0;
static var damage = 25;
var bulletsPerClip = 30;
static var clips = 3;
var range = 100;
static var bulletsLeft : int = 30;
private var hitParticles : ParticleEmitter;
private var nextFireTime = 0.0;

function Start () {
	hitParticles = GetComponentInChildren(ParticleEmitter);
	
	// We don't want to emit particles all the time, only when we hit something.
	if (hitParticles)
		hitParticles.emit = false;
}

function Update () {
if(Input.GetMouseButton(0))
{
Fire();
}
if (bulletsPerClip == 0)
{
Reload ();
}
if (Input.GetKeyDown ("r"))
Reload ();
}

function Fire () {
	if (bulletsLeft == 0)
		return;
	if (bulletsPerClip == 0)
		return;
	
	// If there is more than one bullet between the last and this frame
	// Reset the nextFireTime
	if (Time.time - fireRate > nextFireTime)
		nextFireTime = Time.time - Time.deltaTime;
	
	// Keep firing until we used up the fire time
	while( nextFireTime < Time.time && bulletsLeft != 0) {
		FireOneShot();
		nextFireTime += fireRate;
	}
}

function FireOneShot () {
	var direction = transform.TransformDirection(Vector3.forward);
	var hit : RaycastHit;
	
	// Did we hit anything?
	if (Physics.Raycast (transform.position, direction, hit, range)) {
		// Apply a force to the rigidbody we hit
		if (hit.rigidbody)
			hit.rigidbody.AddForceAtPosition(force * direction, hit.point);
		
		// Place the particle system for spawing out of place where we hit the surface!
		// And spawn a couple of particles
		if (hitParticles) {
			hitParticles.transform.position = hit.point;
			hitParticles.transform.rotation = Quaternion.FromToRotation(Vector3.up, hit.normal);
			hitParticles.Emit();
		}

		// Send a damage message to the hit object			
		hit.collider.SendMessageUpwards("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);
	}
	
	bulletsLeft--;

	// Register that we shot this frame,
	// so that the LateUpdate function enabled the muzzleflash renderer for one frame
	m_LastFrameShot = Time.frameCount;
	enabled = true;
	
	// Reload gun in reload Time		
	if (bulletsLeft == 0)
		Reload();			
}

function Reload(){
if (clips > 0) {
animation.Play("reload");
yield WaitForSeconds(1.25);
bulletsLeft = 30;
bulletsPerClip = 30;
clips--;
}
}
2

/ attach this script with your gun and put an empty game object as a child of gun which work as spawn point of bullet

public class AutoFire : MonoBehaviour {

public float frequency = 10;
public float coneAngele = 1.0f;
public bool firing = false;
public float hitSoundVolume = 5f;
public GameObject muzzleFlash;
public AudioClip soundHit;
private float _lastFireTime = -1;
private RaycastHit _hitInfo;
private Quaternion _coneRandomRotation;
private Vector3 _force;
private GameObject _bullet;
private Transform _spawnPoint;
RaycastHit hitInfo;
void Start () {
if(muzzleFlash) muzzleFlash.active = false;
_force = new Vector3(0,0,0);
_bullet=Resources.Load("Prefabs/bullet", typeof(GameObject))as GameObject;
if(!_bullet){
Debug.LogError("keep bullet prefab in Resources/Prefabs/bullet");
}
foreach(Transform tr in transform){
if(tr){
_spawnPoint=tr;
}
}
}
 
// Update is called once per frame
void Update () {
if (firing) {
if (Time.time > _lastFireTime + 1 / frequency) {
//coneRandomRotation= Quaternion.Euler (Random.Range(-coneAngele, coneAngele), Random.Range(-coneAngele, coneAngele),0);
_coneRandomRotation = Quaternion.Euler(0, 0, 0);
GameObject go= Instantiate(_bullet,_spawnPoint.position,Quaternion.Euler(Vector3.zero)) as GameObject;
SimpleBulletOrMissile bulletOrMissile = go.GetComponent<SimpleBulletOrMissile>();
_lastFireTime = Time.time;
 
Physics.Raycast (go.transform.position, go.transform.up,out _hitInfo,Mathf.Infinity,-5);
if (_hitInfo.transform)
{
print(_hitInfo.transform.tag+"hitted");
Health targetHealth = _hitInfo.transform.GetComponent<Health>();
if (targetHealth)
{
//kill or health damage of target
}
 
if (_hitInfo.rigidbody)
{
//if want to apply force on enemy
hitInfo.rigidbody.AddForceAtPosition(_force, hitInfo.point, ForceMode.Impulse);
}
 
AudioSource.PlayClipAtPoint(soundHit, _hitInfo.point, hitSoundVolume);
 
bulletOrMissile.dist = _hitInfo.distance;
 
 
}
else {
 
bulletOrMissile.dist = 50;
}
}
 
}
if(Input.GetMouseButton(0)){
OnStartFire();
}
if(Input.GetMouseButtonUp(0)){
OnStopFire();
}
}
 
void OnStartFire() {
if (Time.timeScale == 0)
return;
 
firing = true;
if(muzzleFlash) muzzleFlash.active = true;
if (audio) audio.Play();
}
 
void OnStopFire() {
firing = false;
if(muzzleFlash) muzzleFlash.active = false;
if (audio) audio.Stop();
}

//attach this script with bullet

public class SimpleBulletOrMissile : MonoBehaviour {

public float speed = 10; public float lifeTime = 0.5f; public float dist = 100;

private float _spawnTime = 0.0f;
private Transform _tr;
// Use this for initialization
void OnEnable () {
_tr = transform;
_spawnTime = Time.time;
}
 
// Update is called once per frame
void Update () {
_tr.position += _tr.forward * speed * Time.deltaTime;
dist -= speed * Time.deltaTime;
if (Time.deltaTime > _spawnTime + lifeTime || dist < 0) {
// print("Destroy form bullet");
Destroy(gameObject);
}
}