Bug OnScreenControl.SendValueToControl does not trigger Action [2019.4.3f1]

I have created a simple clone of OnScreenStick to customize its behavior to suit my purposes. I am finding that calling SendValueToControl does not trigger the corresponding Action setup in my PlayerInput.

I have set the control path of the joystick to Gamepad/LeftStick:



I am testing this on my PC with a keyboard&mouse. I do not have a gamepad connected. Here is the Move action which I expect to fire:



I am using the "Unity Events" configuration of PlayerInput on my Player object to handle the Move action. I can confirm that pressing WASD properly fires the action, but calling SendValueToControl from the OnScreenStick does not. Here is my OnScreenJoystick code, which is nearly identical to the OnScreenStick code:

Code (CSharp):

1. using UnityEngine.EventSystems;
2. using UnityEngine.Serialization;
3. using UnityEngine.InputSystem.Layouts;
4. using UnityEngine;
5. using UnityEngine.InputSystem.OnScreen;
6. using UnityEngine.InputSystem;
7.  
8. public class OnScreenJoystick : OnScreenControl, IPointerDownHandler, IPointerUpHandler, IDragHandler
9. {
10.     private float m_MovementRange;
11.  
12.     public float movementRange
13.     {
14.         get => m_MovementRange;
15.     }
16.  
17.     [InputControl(layout = "Vector2")]
18.     [SerializeField]
19.     private string m_ControlPath;
20.  
21.     [SerializeField]
22.     private GameObject joystickBoundsImageTemplate;
23.     private GameObject joystickBoundsImage;
24.  
25.     [SerializeField]
26.     private GameObject joystickCenterImageTemplate;
27.     private GameObject joystickCenterImage;
28.  
29.     private Vector2 m_PointerDownPos;
30.  
31.     protected override string controlPathInternal
32.     {
33.         get => m_ControlPath;
34.         set => m_ControlPath = value;
35.     }
36.  
37.     private void OnEnable()
38.     {
39.         if (joystickBoundsImageTemplate == null)
40.             throw new System.ArgumentNullException(nameof(joystickBoundsImageTemplate));
41.  
42.         if (joystickCenterImageTemplate == null)
43.             throw new System.ArgumentNullException(nameof(joystickCenterImageTemplate));
44.  
45.         FillScreen();
46.     }
47.  
48.     public void FillScreen()
49.     {
50.         Rect parentRect = (transform.parent as RectTransform).rect;
51.         ((RectTransform)transform).SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, parentRect.width);
52.         ((RectTransform)transform).SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, parentRect.height);
53.     }
54.  
55.     public void OnPointerDown(PointerEventData eventData)
56.     {
57.         if (eventData == null)
58.             throw new System.ArgumentNullException(nameof(eventData));
59.  
60.         RectTransformUtility.ScreenPointToLocalPointInRectangle(
61.             transform.parent.GetComponentInParent<RectTransform>(),
62.             eventData.position,
63.             eventData.pressEventCamera,
64.             out m_PointerDownPos
65.         );
66.  
67.         Debug.Log($"Pointer down at {m_PointerDownPos}");
68.  
69.         if (joystickBoundsImage == null)
70.             joystickBoundsImage = Instantiate(joystickBoundsImageTemplate, transform);
71.         ((RectTransform)joystickBoundsImage.transform).anchoredPosition = m_PointerDownPos;
72.         joystickBoundsImage.SetActive(true);
73.  
74.         if (joystickCenterImage == null)
75.             joystickCenterImage = Instantiate(joystickCenterImageTemplate, transform);
76.         ((RectTransform)joystickCenterImage.transform).anchoredPosition = m_PointerDownPos;
77.         joystickCenterImage.SetActive(true);
78.  
79.         Rect bounds = ((RectTransform)joystickBoundsImage.transform).rect;
80.         m_MovementRange = Mathf.Min(bounds.width, bounds.height) / 2;
81.     }
82.  
83.     public void OnDrag(PointerEventData eventData)
84.     {
85.         if (eventData == null)
86.             throw new System.ArgumentNullException(nameof(eventData));
87.  
88.         Debug.Log($"OnDrag");
89.  
90.         RectTransformUtility.ScreenPointToLocalPointInRectangle(
91.             transform.parent.GetComponentInParent<RectTransform>(),
92.             eventData.position,
93.             eventData.pressEventCamera,
94.             out var position
95.         );
96.  
97.         Debug.Log($"Dragged to {position}");
98.         var delta = position - m_PointerDownPos;
99.  
100.         delta = Vector2.ClampMagnitude(delta, movementRange);
101.         ((RectTransform)joystickCenterImage.transform).anchoredPosition = m_PointerDownPos + delta;
102.  
103.         var newPos = new Vector2(delta.x / movementRange, delta.y / movementRange);
104.         Debug.Log($"Sending position to control: {newPos}");
105.         SendValueToControl(newPos);
106.     }
107.  
108.     public void OnPointerUp(PointerEventData eventData)
109.     {
110.         if (joystickCenterImage != null)
111.             joystickCenterImage.SetActive(false);
112.        
113.         if (joystickCenterImage != null)
114.             joystickBoundsImage.SetActive(false);
115.  
116.         SendValueToControl(Vector2.zero);
117.         Debug.Log($"Pointer up at {m_PointerDownPos}");
118.     }
119.  
120. }

In the Input Debugger, I do not see a gamepad device, which leads me to believe perhaps the OnScreenControl is not correctly creating a virtual gamepad device:



Here's the PlayerInput configuration for reference:



From what I can tell, OnScreenStick is broken. I have been wrestling with the new Input System for days. Is there something I'm doing wrong?

 

Did you ever get an answer to this? I am having the same issue. When using the On-Screen Stick component, setting the "Control Path" to "Left Stick [Gamepad]" and having a "Left Stick [Gamepad]" defined as one of the bindings for my "Move" action would logically mean that this would trigger a CallbackContext, thus allowing me to utilize it to invoke any Unity events I have defined under my "Move" CallbackContext section of my Player Input component. However, no such luck. The Left Stick inputs are definitely being sent to the input system (because I am using them to read their Vector2 components via a non-CallbackContext method). However, they are definitely not being recognized through the CallbackContext system via SendValueToControl.

I don't believe that the issue resides with the On-Screen Stick component. I hooked up a controller and it will not trigger the CallbackContext routine regardless of pairing it with the On-Screen Stick component. From what I can tell, the only thing I can get to work with CallbackContext are direct key presses on a keyboard without incorporating SendValueToControl.

 

Here is my solution :
https://forum.unity.com/threads/solution-onscreencontrol-sendvaluetocontrol-does-nothing.1068779/