Fast Moving Gameobject collision and trigger check failed

Hello guys
I have a problem with collision detection via script check the video for more details
Either when triggered or collided, the shell should be destroyed
First shot -> the colliders are triggers, there is OnTriggerEnter Function on the colliders so it should be triggered but it didn't
Second shot -> turn them into normal colliders and see if they worked, well they didn't again, but you can see, the shell bounces off the collider, so I know the collision "definitely" happened?
Third shot -> Disable the right side collider, but keep the left side, still doesn't work
do you have any ideas what is wrong? I got some idea on how Unity tries to simulate collision without even colliding first but it doesn't make sense at all since the OnCollisionEnter or OnTriggerEnter didnt work
btw I am using Continious Dynamic and Interpolate for the tank and Extrapolate for the Shell, Well, i have used all the combos I could have used, I am not sure whether Rigidbody.SweepTest would work but just asking if there is any other solutions to it
-Regards

 

we would need to see any code from you,
also have you Debugged information about whats happening in your code?

 

Yes i did debug.log to see what's wrong but since it is not logging it is definitely wrong somewhere

 

Armour.cs is attached to the collider on the tank, and Shell.cs is attached to the Shell itself, if you are wondering if I have set the tag correctly, yes I did, and I just double-checked it now and for sure, i did. Same goes with the layer masks. It is one thing if the shell passed through the collider but the shell gameobject literally got bounced so I cannot make sense why it doesn't get detected
Armour.cs

Code (CSharp):

1.  private void OnCollisionEnter(Collision collision)
2.     {
3.         if (collision.gameObject.tag == "Shell")
4.         {
5.             Vector3 direction = -transform.forward;
6.             if (armourSide == ArmourSide.Right)
7.             {
8.                 direction = -transform.right;
9.             }
10.             if (armourSide == ArmourSide.Back)
11.             {
12.                 direction = transform.forward;
13.             }
14.             if (armourSide == ArmourSide.Left)
15.             {
16.                 direction = transform.right;
17.             }
18.             collision.gameObject.GetComponent<ShellTest>().isHit(ArmourThickness, direction);
19.             Debug.Log("Holy Shiet");
20.         }
21.     }

Shell.cs

Code (CSharp):

1. private void OnCollisionEnter(Collision collision)
2.     {
3.         if (collision.gameObject.tag == "Untagged")
4.         {
5.             if (collision.gameObject.GetComponent<Armour>() != null)
6.             {
7.                 Vector3 direction = collision.gameObject.GetComponent<Armour>().direction;
8.                 if (transform.GetComponent<PhotonView>().IsMine)
9.                 {
10.                     float Angle = Vector3.Angle(direction, Shell.velocity.normalized);
11.                     Debug.Log(Angle);
12.                     PhotonNetwork.Destroy(transform.gameObject);
13.                 }
14.             }
15.         }
16.     }

Sorry for my bad english

 

I also have tried with OnTriggerEnter by turning the colliders into Triggers but it still does not work. It is not debugging anything so i figure the method itself isn't being called, I mean it works sometimes but it doesn't work most of time since the shell is moving quite fast

*I have both OnCollisionEnter and OnTriggerEnter in the Armour Script with the same code, the former one does not even work, while the latter one works but failed most of the time to detect the shell. The OnCollisionEnter in the Shell Script does not even work

 

If an object moves to fast, the default settings on Rigidbodies won't work. Those settings are the fastest performance wise, but breaks down when things moves at high velocities - generally velocities where they move at more than ~ half their size per frame.

In particular, you'll want to change the "Collision Detection" mode to something different than "Discrete". See here.

 

Yes the Collision Detection Mode I am using is already Continuous Dynamic on both Gameobjects?

 

But it still doesn't work

 

Triggers do no interact with each other, at least one of them must be a collider. And in this case unless you want a mechanic where a single shell can penetrate multiple objects both should be colliders.

Second thing is that in your OnCollisionEnter, place your debug logs outside the if blocks. it may very well be that the functions ARE calling but the if statements are evaluating to false.

 

Have you find a solution to this problem? I have the same problem, no idea what to do. But in my case, only sometimes the trigger is not detected. Half of the time the triggering is detected.

 

Same issue. Fast moving object with a rigidbody and "continuous dynamic". Only sometimes triggers a trigger mesh collider.

 

For anyone still struggling with collision for fast GO, check this vid out

 

thanks ,very good