Raycast on child gives parent name in hit.transform.name

Hi I cast ray like this.
I have to ignore the layer number 8

Code (csharp):

1.  
2. var layerMask = 1 << 8;
3. layerMask = ~layerMask;
4.                
5. var ray = Camera.main.ScreenPointToRay(touch.position);
6. var hit : RaycastHit;
7. if(Physics.Raycast(ray, hit, 100, layerMask))
8. {
9.     print(hit.transform.name);
10.     if(hit.transform.name == "ChildObjName")
11.     {
12.         print("yes child obj");
13.  
14.     }
15. }
16.  

I have assigned the Layer number 8 to Parent Object and I need to cast ray on its child object. but when tap on child object it always gives me parent object name. but i have assigned IgnoreLayer(layer no. 8 ) to parent object.

Also I can tap the other objects that are not child of this parent object.?

Any thing that I can do to detect it?

thanks in advance

 

if someone is unable to understand. I can explain.

 

Well, could you not have the child object in a layer that is not layer 8 and then detect the child directly via the raycast ?

Do you have to go via the parent ? Sounds like you are trying to cross the river to get water.

For sure ignoring a layer is a bad idea if you want to detect someting in it.



/Chris

 

No I need to access the child directly.
the child object is away from parent. I am making the object child due to i have to keep it with parent in complete game play.

If ignoring layer is a bad idea than what could be the best way to do it?

 

Colliders on child objects are treated as though they are additions to the parent collider (this is what you want for most physics tasks). However, the RaycastHit object also has a field for the collider that was hit. The reported transform is the parent's transform but the collider is the exact collider that was hit. If you need the transform of the child object, you can use the collider's transform property, etc.

 

thanks andeeee it works

 

Works great! Thanks andeeeee

 

thanks andeeee it works!!

 

Thanks!!!

 

OMG saved my life!

 

THANK YOU, ANDEEEEEE!!!

 

Oh my goodness, thank you so much! This finally explains why I couldn't get the raycast to ignore the parent object! Andeee you're my hero!

 

Good to know!

 

Thanks Andeee!

 

Thanks andeeeee!

 

Thanks Andeeeeeeeeeeeeeee!

 

Thanks andeeeee

 

just searched for this and andeeeee had the perfect answer ;D

 

It helps! Thank you

 

Dude thanks!

 

Can you explain this, I'm new to unity, i habe similar problem.

Collision detected that my player keep hit parent object even though player is on the top of child object of that parent object.

So i got log saying player hit child object while the player hit the child object.

I'm so confused.

Thank in advance guys

 

Can you explain it.
I'm new to unity.

I have kind of similar problem.
OnCollisionEnter function keep telling me that my sphere player hits empty parent object while the player bumps on to child object (the child object transform position is quite far from the parent object).

So, i can not check the material color of my child object if my player collider can not detect collider with my child object.

Please kindly advise.
Thank in advance

 

Would you mind if you could explain this to me what Andee said.

I have OnCollisionEnter keep telling me that my Player hits parent obkect even though it hits the child object not the parent (position of child quite far from parent object).

So, what is wrong with this?

I want to detect wheter my player hit a child object with similar color to my player object.

Thanks in advance thanks

 

Would you mind if you could explain this to me what Andee said.

I have OnCollisionEnter keep telling me that my Player hits parent obkect even though it hits the child object not the parent (position of child quite far from parent object).

So, what is wrong with this?

I want to detect wheter my player hit a child object with similar color to my player object.

 

YES.

Code (CSharp):

1. hit.transform.gameObject
2.  
3. hit.collider.transform.gameObject

Turns out these are different things! 90 minutes to learn this

 

It wokkens, thanks andeeeee and chishti for your perseverance.

Everywhere I go, I see his name.

 

your are de best andeeeee

 

wow, it works! Thanks andeeeeeeeeeeeeeeeeee

 

Such a silly decision to make hit.transform return the parent if it has a rigidbody! APIs should be predictable

 

You are the master

 

Wha? Can you please explain a bit more?

 

When you Raycast, hit.transform returns the parent's transform of the hit, and hit.collider returns the collider of the hit.

This is very illogical, it should be standardized so both hit.transform and hit.collider refer to the components of hit.

 

Use "hit.collider.transform.name" instead of "hit.transform.name"

 

Thank you, Andeeee!!!

 

Yeah, this strange decision made me nervous for a couple of hours

 

Thank you andeeee !

 

12 years later, but thank you so much Andeeee! This issue has caused quite some mental breakdowns!

 

Still going strong, thanks Andeeeeee.

Also, @Unity please F***ing fix this, or atleast document it better.

 

It works, thanks andeeeee

 

Still relevant in 2022, thanks andeeeeee! Also FYI, he was last seen on the forums in 2015, so 7 years ago. Imagine if he came back to all these thank yous lol

 

Thanks Andeeeeee

 

Hot darn, dude! Thanks, this is such helpful info!

 

Thanks Andeeeeee

 

Thank you so much Andeeeeee this helped immensely! Absolute legend

 

Thanks Andeeeeeeee

 

Thanks Andeeeee!!! Was strugglin...all over one word. collider.

 

Thank you andreeeeee. Unity making this stupid feature was prob. thinking: "Oh! Why not add this counterintuitive garbage nobody asked for! I bet they don`t know how to find collider`s parent on their own! Let`s also mention it only once, or, better: not mention it at all!"