Raycast problem [Sometimes it doesnt detect]

i3artyy2222 · May 6, 2014

Hello all,
Ive been making my own game but i have some problem, i think is something to do with raycast or something.
When i shoot sometimes the bullet holes appear but sometime it doesnt, like it doesnt detect sometimes i dont know here is the video.

https://www.youtube.com/watch?v=K76lv0oBL8U&feature=youtu.be

Thanks For helping !!!

i3artyy2222 · May 6, 2014

Can any one help me ?

Carpe-Denius · May 7, 2014

Code?

Maybe your raycast is too short?

i3artyy2222 · May 7, 2014

Here is my raycast script

Code (csharp):

var maxDist : float = 100000000;

var floatInFrontOfWall : float = 0.00001;

var ConcreteHole : GameObject[];

var WoodHole : GameObject[];

var MetalHole : GameObject[];

var DirtHole : GameObject[];

var DirtParticle : Transform;

var MetalParticle : Transform;

var ConcreteParticle : Transform;

var WaterParticle : Transform;

var WoodParticle : Transform;

var UntaggedParticle : Transform;

var power : int = 50;

function Update ()

{

var hit : RaycastHit;

var fwd = transform.TransformDirection(Vector3.forward);

if (Physics.Raycast(transform.position, transform.forward, hit, maxDist))

{

if (ConcreteHole hit.transform.tag == "Concrete"){

Instantiate(ConcreteParticle, hit.point + (hit.normal * floatInFrontOfWall), Quaternion.LookRotation(hit.normal));

Instantiate(ConcreteHole[Random.Range(0,3)], hit.point + (hit.normal * floatInFrontOfWall), Quaternion.LookRotation(hit.normal));

}

if (WoodHole hit.transform.tag == "Wood"){

Instantiate(WoodParticle, hit.point + (hit.normal * floatInFrontOfWall), Quaternion.LookRotation(hit.normal));

Instantiate(WoodHole[Random.Range(0,2)], hit.point + (hit.normal * floatInFrontOfWall), Quaternion.LookRotation(hit.normal));

}

if (MetalHole hit.transform.tag == "Metal"){

Instantiate(MetalParticle, hit.point + (hit.normal * floatInFrontOfWall), Quaternion.LookRotation(hit.normal));

Instantiate(MetalHole[Random.Range(0,3)], hit.point + (hit.normal * floatInFrontOfWall), Quaternion.LookRotation(hit.normal));

}

if (DirtHole hit.transform.tag == "Dirt"){

Instantiate(DirtParticle, hit.point + (hit.normal * floatInFrontOfWall), Quaternion.LookRotation(hit.normal));

}

if (hit.transform.tag == "Untagged"){

Instantiate(UntaggedParticle, hit.point + (hit.normal * floatInFrontOfWall), Quaternion.LookRotation(hit.normal));

}

Destroy(gameObject);

if (hit.rigidbody !=null)

hit.rigidbody.AddForceAtPosition(fwd * power, hit.point);

}

}

i3artyy2222 · May 7, 2014

Can anyone help me ?
And is it better to have 2 different scripts [For gun and bullet] bullet is basically raycast script and gun is about ammo shooting and stuff or is it better to join them together ?

i3artyy2222 · May 8, 2014

Help anyone ? please guys i checked whole google and could find similar problem can you help me :?
Im asking for help on unity 3d forum, so why no one is helping

mgear · May 8, 2014

Try with Debug.Drawline to see where the ray goes,
https://docs.unity3d.com/Documentation/ScriptReference/Debug.DrawLine.html

And print out the object name the raycast hits (maybe it hits some other object?)

Code (csharp):

print( hit.transform.name);

i3artyy2222 · May 8, 2014

Yes i have noticed that sometimes [When it doesnt detect] i saw on scene view that it goes sometimes through the object [That doesnt detect] and hit something behind.

mgear · May 8, 2014

Also how does the shooting happens?

As you are constantly raycasting inside Update loop,
but also destroying the same gameobject there..(with code after the destroy..)

Maybe you should use function Start() instead Update() ?

What kind of colliders the wall has?

i3artyy2222 · May 8, 2014

It has mesh colliders but it happens to any object even if its box collider or sphere

Edit i have changed from update to start its same problem nothing has changed

Edit i have also changed the distance to 1000 still same problem

I have also a gun script maybe it will help

Code (csharp):

var beingHeld : boolean = false;

var outsideBox : GameObject;

@HideInInspector

var countToThrow : int = -1;

@HideInInspector

var playerTransform : Transform;

@HideInInspector

var playerMovementScript : PlayerMovementScript;

var cameraObject : GameObject;

@HideInInspector

var targetXRotation : float;

@HideInInspector

var targetYRotation : float;

@HideInInspector

var targetXRotationV : float;

@HideInInspector

var targetYRotationV : float;

var isSingleShot : boolean = false;

var isAutomatic : boolean = false;

var rotateSpeed : float = 0.3;

var holdHeight : float = -0.5;

var holdSide : float = 0.5;

var racioHipHold : float = 1;

var hipToAimSpeed : float = 0.1;

@HideInInspector

var racioHipHoldV : float;

var aimRacio : float = 0.4;

var zoomAngle : float = 30;

var ShootSpeed : float = 0.1; //time between each shot. Lower the number, faster the burst

private var waitTilNextFire : float = 0;

private var ShootCooler : float = 0.3;

private var shotTime : float = 0; //Must always remain at 0

private var NextShot : float;

var bullet : GameObject;

var bulletSpawn : GameObject;

var shootAngleRandomizationAiming : float = 5;

var shootAngleRandomizationNotAiming : float = 15;

var recoilAmount : float = 0.5;

var recoilRecoverTime : float = 0.2;

@HideInInspector

var currentRecoilZPos : float;

@HideInInspector

var currentRecoilZPosV : float;

var gunSound : GameObject;

var gunModelObjects : GameObject[];

var reloading : boolean = false;

var reloadAnimation : Animation;

var reloadSound : AudioSource;

var reloadAnimationString : String;

var MagSize : int = 25;

var currentMag : int = 25;

var maxExtraAmmo : int = 100;

var currentExtraAmmo : int = 100;

var AmmoHUD : GUIStyle;

function Start()

{

NextShot = ShootSpeed;

}

function Awake()

{

playerTransform = GameObject.FindWithTag("Player").transform;

playerMovementScript = GameObject.FindWithTag("Player").GetComponent(PlayerMovementScript);

countToThrow = -1;

}

function LateUpdate ()

{

if (currentMag > MagSize)

currentMag = MagSize;

if (currentExtraAmmo > maxExtraAmmo)

currentExtraAmmo = maxExtraAmmo;

if (currentMag < 0)

currentMag = 0;

if (currentExtraAmmo < 0)

currentExtraAmmo = 0;

if(waitTilNextFire > 0)

{

waitTilNextFire -= Time.deltaTime;

}

if(waitTilNextFire > 0)

{

waitTilNextFire = 0;

}

if (beingHeld)

{

if (!reloading Input.GetButtonDown("Reload") currentMag < MagSize currentExtraAmmo > 0)

{

reloading = true;

reloadAnimation.Play(reloadAnimationString);

reloadSound.Play();

}

if (!reloading Input.GetButtonDown("Fire1") currentMag == 0 currentExtraAmmo > 0)

{

reloading = true;

reloadAnimation.Play(reloadAnimationString);

reloadSound.Play();

}

if (reloading !reloadAnimation.IsPlaying(reloadAnimationString))

{

if (currentExtraAmmo >= MagSize - currentMag)

{

currentExtraAmmo -= MagSize - currentMag;

currentMag = MagSize;

}

if (currentExtraAmmo < MagSize - currentMag)

{

currentMag += currentExtraAmmo;

currentExtraAmmo = 0;

}

reloading = false;

}

for(var modelObject : GameObject in gunModelObjects)

{

modelObject.layer = 8;

}

rigidbody.useGravity = false;

outsideBox.GetComponent(Collider).enabled = false;

var holdSound : GameObject;

if (Input.GetButtonDown("Fire1") currentMag > 0 !reloading isSingleShot)

{

if (waitTilNextFire == 0)

{

currentMag -= 1;

if (bullet)

Instantiate(bullet,bulletSpawn.transform.position, bulletSpawn.transform.rotation);

if (gunSound)

holdSound = Instantiate(gunSound, bulletSpawn.transform.position, bulletSpawn.transform.rotation);

targetXRotation += (Random.value - 0.5) * Mathf.Lerp(shootAngleRandomizationAiming, shootAngleRandomizationNotAiming, racioHipHold);

targetYRotation += (Random.value - 0.5) * Mathf.Lerp(shootAngleRandomizationAiming, shootAngleRandomizationNotAiming, racioHipHold);

currentRecoilZPos -= recoilAmount;

waitTilNextFire = ShootCooler;

}

}

if (Input.GetButton("Fire1") currentMag > 0 !reloading isAutomatic)

{

shotTime += Time.deltaTime;

if(shotTime >= NextShot)

{

currentMag -= 1;

if (bullet)

Instantiate(bullet,bulletSpawn.transform.position, bulletSpawn.transform.rotation);

if (gunSound)

holdSound = Instantiate(gunSound, bulletSpawn.transform.position, bulletSpawn.transform.rotation);

targetXRotation += (Random.value - 0.5) * Mathf.Lerp(shootAngleRandomizationAiming, shootAngleRandomizationNotAiming, racioHipHold);

targetYRotation += (Random.value - 0.5) * Mathf.Lerp(shootAngleRandomizationAiming, shootAngleRandomizationNotAiming, racioHipHold);

currentRecoilZPos -= recoilAmount;

NextShot += ShootSpeed;

}

}

if (holdSound)

holdSound.transform.parent = transform;

currentRecoilZPos = Mathf.SmoothDamp( currentRecoilZPos, 0, currentRecoilZPosV, recoilRecoverTime);

cameraObject.GetComponent(MouseLookScript).currentTargetCameraAngle = zoomAngle;

if (Input.GetButton("Fire2") !reloading){

cameraObject.GetComponent(MouseLookScript).currentAimRacio = aimRacio;

racioHipHold = Mathf.SmoothDamp(racioHipHold, 0, racioHipHoldV, hipToAimSpeed);}

if (Input.GetButton("Fire2") == false || reloading){

cameraObject.GetComponent(MouseLookScript).currentAimRacio = 1;

racioHipHold = Mathf.SmoothDamp(racioHipHold, 1, racioHipHoldV, hipToAimSpeed);}

transform.position = cameraObject.transform.position + (Quaternion.Euler(0,targetYRotation,0) * Vector3(holdSide * racioHipHold, holdHeight * racioHipHold, 0) + Quaternion.Euler(targetXRotation, targetYRotation, 0) * Vector3(0,0,currentRecoilZPos));

targetXRotation = Mathf.SmoothDamp( targetXRotation, cameraObject.GetComponent(MouseLookScript).xRotation, targetXRotationV, rotateSpeed);

targetYRotation = Mathf.SmoothDamp( targetYRotation, cameraObject.GetComponent(MouseLookScript).yRotation, targetYRotationV, rotateSpeed);

transform.rotation = Quaternion.Euler(targetXRotation, targetYRotation, 0);

}

if (!beingHeld)

{

for(var modelObject : GameObject in gunModelObjects)

{

modelObject.layer = 0;

}

rigidbody.useGravity = true;

outsideBox.GetComponent(Collider).enabled = true;

countToThrow -= 1;

if (countToThrow ==0)

rigidbody.AddRelativeForce(0, playerMovementScript.throwGunUpForce, playerMovementScript.throwGunForwardForce);

if (Vector3.Distance(transform.position, playerTransform.position) < playerMovementScript.distToPickUpGun Input.GetButtonDown("Use Key") playerMovementScript.waitFrameForSwitchGuns <= 0)

{

playerMovementScript.currentGun.GetComponent(GunScript).beingHeld = false;

playerMovementScript.currentGun.GetComponent(GunScript).countToThrow = 2;

playerMovementScript.currentGun = gameObject;

beingHeld = true;

targetYRotation = cameraObject.GetComponent(MouseLookScript).yRotation - 180;

playerMovementScript.waitFrameForSwitchGuns = 2;

}

}

}

StarManta · May 8, 2014

Have you tried what he suggested with Debug.DrawLine and Debug.Log-ing what it hits each frame?

i3artyy2222 · May 9, 2014

Yes i have tried that, sometimes when i shoot and when it doesnt detect it goes through the object, when i shoot at the wall it shows in console that i have hit ' WALL,WALL,WALL,WALL,PLANE,WALL,WALL,PLACE,TERRAIN' i dont have no idea how to fix it

i3artyy2222 · May 9, 2014

?

mgear · May 9, 2014

show screenshot with Debug.Drawline, does it really go through the collider?

Maybe the bullet has rigidbody and it collides something after instantiated (and turns to wrong direction)?

i3artyy2222 · May 9, 2014

But when i add this
Debug.Log (hit.transform.gameObject.name);// it should return the obstacle
Debug.DrawLine (transform.parent.position, hit.point, Color.red);

to my raycast script the red line is showing but its like at the edge of terrain

edit: I have checked the bullet prefab doesnt have rigidbody

i3artyy2222 · May 9, 2014

I have also used this script http://wiki.unity3d.com/index.php/DontGoThroughThings
and attached it to bullet prefab and still same problem

i3artyy2222 · May 9, 2014

So no one know how to fix it ?

i3artyy2222 · May 10, 2014

?

mgear · May 10, 2014

You have to try different things.. or attach sample unitypackage for testing.

If your debug.drawline is sometimes starting from 0,0,0, try to find out why..
(and draw the debug.line exactly same way as you do raycast, not from parent..)

DontGoThroughThings:
You dont need that if your bullets dont move, do they?

Are the bullets parented at anytime to some object?

i3artyy2222 · May 13, 2014

bullet is an empty game object with the script

i3artyy2222 · May 13, 2014

It seems like i fix it by my own i think the bullet spawn was colliding with gun model so i moved it further a bit and it works
also i change some of my script but cant remember what did i change

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