Multiple callback in one frame

Hello guys,

I'm starting a new project and I have some issue with the new Input System. I get multiple callbacks in one frame for my input. But it's not consistent, some frame it's OK, some frame i get 2 or 3 callback calls.

This is my example :

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.InputSystem;
3.  
4. public class Controller : MonoBehaviour
5. {
6.     private GameInputs m_Inputs;
7.     private int m_ProcessFrame = -1;
8.  
9.     void Start()
10.     {
11.         Debug.Log("Controller is started");
12.         m_Inputs = new GameInputs();
13.         m_Inputs.Player.Enable();
14.         m_Inputs.Player.Movement.performed += OnInputs;
15.     }
16.  
17.     private void OnDestroy()
18.     {
19.         Debug.Log("Controller is destroyed");
20.         m_Inputs.Player.Movement.performed -= OnInputs;
21.         m_Inputs.Player.Disable();
22.     }
23.  
24.     public void OnInputs(InputAction.CallbackContext context)
25.     {
26.         int currentFrame = Time.frameCount;
27.         Vector2 val = context.ReadValue<Vector2>();
28.         if (m_ProcessFrame != currentFrame)
29.         {
30.             Debug.Log(Time.frameCount + $": {context.action} get call back with values {val.x}/{val.y}");
31.             m_ProcessFrame = currentFrame;
32.         }
33.         else
34.         {
35.             Debug.LogWarning(Time.frameCount + $": {context.action} already get call back. These are the new values {val.x}/{val.y}");
36.         }
37.     }
38. }

As you can see on the image I added to this thread, i get a warning saying that I get multiple callback on the same frame. In addition, we can see the value is different between the same frame.

You can see the see the settings I have. I changed the update mode to be during "Dynamic Update".

Am i alone with this problem? What do you guys think?

Unity version : 2019.1.9f1
Input System version : preview - 0.2.10

 

Hello @Rene-Damm , I still have this issue and want to understand if it's a normal behavior or not.

I do not process inputs directly inside the callback and store them in variables to process all of them in the update method. It's really strange for me to have, inside a same frame, two different values of the same input. Which one do i have to select ? Should I process the input twice or just ignore the first one ? Both of these solutions are not really beautiful

I upgrade the input system to the 0.9.6-preview version and i am on the 2019.2.4f1 unity version now.

 

I think you should add them up and process in Update, like you would do for capturing inputs in Update to process in FixedUpdate. That's what I do and it's working fine so far