Collider Issue with Hit Recognition | Official Unity Discord | Page 1

minor rapids Jan 20, 2023, 1:41 AM

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I have the following issue. I use the Unity Physics Engine to check if I hit the enemy. But I also use a Circle Collider 2D to give my Enemies a visual range of when to respond to the player. Now when my Bullets hit this specific Circle, they dissapear, because it counts as "hitting the enemy". Is there a way to specify which Collider of the enemy is important to my bullets?

true falcon Jan 20, 2023, 1:41 AM

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https://docs.unity3d.com/Manual/LayerBasedCollision.html

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Does that help?

minor rapids Jan 20, 2023, 1:42 AM

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I dont know. Can I put different Colliders of the same object on different layers?

true falcon Jan 20, 2023, 1:42 AM

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minor rapids I dont know. Can I put different Colliders of the same object on different layer...

Yeah but they need to be on different objects

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Like children

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Because one gameobject has only 1 layer

minor rapids Jan 20, 2023, 1:43 AM

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Ohh I see

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That could work

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good call

true falcon Jan 20, 2023, 1:43 AM

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But its perfectly fine to split into children for that

minor rapids Jan 20, 2023, 1:43 AM

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So just make an empty object on the Enemy and put the collider on there?

true falcon Jan 20, 2023, 1:43 AM

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Yeah

minor rapids Jan 20, 2023, 1:44 AM

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Do I have to refer to that radius collider in a different way when its not on the main object anymore?

true falcon Jan 20, 2023, 1:44 AM

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Not sure how you are referring to it currently

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But you can just have a serialized field that you drag it to

minor rapids Jan 20, 2023, 1:45 AM

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Alrighty, I give it a try

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So I have a component called "Vision" now which is the children with the Circle Collider

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Does that one need a script now for OnTriggerEnter2D or can I do that in my main script?

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I just used to do this:

   {
       if (other.tag == "Player") alert = true;
   }

   private void OnTriggerExit2D(Collider2D collision)
   {
       if (collision.tag == "Player") alert = false;
   }```
In my main script, when the collider was on the enemy

true falcon Jan 20, 2023, 1:51 AM

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minor rapids Does that one need a script now for OnTriggerEnter2D or can I do that in my main...

I believe OnTriggerEnter etc. get called on the object that has the rigidbody

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So the script would have to be on the same object that has the RB

minor rapids Jan 20, 2023, 1:52 AM

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Alright, shouldnt be a problem

true falcon Jan 20, 2023, 1:52 AM

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I barely do 2D so I'm not sure if it works like in 3D

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Yeah should work as it is

minor rapids Jan 20, 2023, 1:53 AM

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Yeah 2D is easier for a University Project

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Soo I use a bool called alert, that turns true, when someone is in the area. I probably need that to be public, so the enemy can use that info?

true falcon Jan 20, 2023, 1:56 AM

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minor rapids Soo I use a bool called alert, that turns true, when someone is in the area. I p...

Sure

minor rapids Jan 20, 2023, 1:56 AM

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Just heard, having everything on public is poor coding

#Collider Issue with Hit Recognition