koobas.hobune.stream
Gun script using Physics.Raycast not working?
I am using these scripts for my game to make my gun fire and shoot zombies.
This is the script on the gun:
function FireOneShot () {
var direction = transform.TransformDirection(Vector3.forward);
var hit : RaycastHit;
Debug.DrawRay(transform.position, direction, Color.blue);
// 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);
Debug.Log("HIT " + hit.collider.name);
}
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();
}
And this script on my zombie:
function ApplyDamage (damage : float) {
healthPoints -= damage;
if (Time.time > gotHitTimer && painBig && painLittle) {
if (healthPoints < maximumHitPoints * 0.2 || damage > 20) {
audio.PlayOneShot(painBig, 1.0 / audio.volume);
gotHitTimer = Time.time + Random.Range(painBig.length * 2, painBig.length * 3);
} else {
// Play a small pain sound
audio.PlayOneShot(painLittle, 1.0 / audio.volume);
gotHitTimer = Time.time + Random.Range(painLittle.length * 2, painLittle.length * 3);
}
}
if (healthPoints <= 0.0)
Die();
}
Could anyone tell me why this is not working? My character and the zombie both have a character controller. The Debug.DrawRay doesn't appear to do anything, but the gun does fire!
What is not working? What are you trying to achieve that these scripts aren't doing?
Also, I do think your Debug.DrawRay does do something, but it does something for that 1 frame which happens too fast for the eye to see or even the screen to show.
if you want to see the ray put it in your update like this..
function Update ()
{
...
var direction = transform.TransformDirection(Vector3.forward); // COuld be placed in Start()
if(gunShot)
Debug.DrawRay(transform.position, direction, Color.blue);
}
Put is gunShot = true in the FireOneShot. Assu$$anonymous$$g gunShot is false when instantiated. Also, this will keep the ray active forever when the function is called. You can set it to false with a timer if you'd like.
Debug.DrawRay(transform.position, direction * 15.0, Color.blue, 0.5);
This makes the ray drawn 15 units long and displayed for 0.5 seconds.
Ok, thanks for the tips about the ray. As for what I need doing, the gun appears to be firing, but doesn't seem to be damaging the enemy :(
Ok, I've fixed it - the gun was in a weird rotation so I made the ray cast originate at the parent gameobject instead.
// 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);
}
}
}
I originally used a script like this, but for performance sake, I didn't want to spawn individual bullets.
