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Assets/Convai/ConvaiVR/Scripts/HandAnimationController.cs

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+using UnityEngine;
+using UnityEngine.InputSystem;
+
+/// <summary>
+/// Controls hand animations based on user input, managing trigger and grip actions through Unity's Input System.
+/// </summary>
+public class HandAnimationController : MonoBehaviour
+{
+    // Input action for the trigger button
+    [SerializeField] private InputActionProperty _triggerAction;
+    // Input action for the grip button
+    [SerializeField] private InputActionProperty _gripAction;
+    // Controls animations for the hand
+    private Animator _animator;
+    // Identifier for the trigger animation parameter
+    private int _triggerAnimationParameterID;
+    // Identifier for the grip animation parameter
+    private int _gripAnimationParameterID;
+
+    /// <summary>
+    /// Initializes necessary components and variables.
+    /// </summary>
+    private void Awake()
+    {
+        _animator = GetComponent<Animator>();
+        _triggerAnimationParameterID = Animator.StringToHash("Trigger");
+        _gripAnimationParameterID = Animator.StringToHash("Grip");
+    }
+
+    /// <summary>
+    /// Subscribes to input events when the script is enabled.
+    /// </summary>
+    private void OnEnable()
+    {
+        _triggerAction.action.performed += XRController_SelectAction_Performed;
+        _gripAction.action.performed += XRController_ActivateAction_Performed;
+        _triggerAction.action.canceled += XRController_SelectAction_Canceled;
+        _gripAction.action.canceled += XRController_ActivateAction_Canceled;
+    }
+
+    /// <summary>
+    /// Unsubscribes from input events to prevent issues when the script is disabled.
+    /// </summary>
+    private void OnDisable()
+    {
+        _triggerAction.action.performed -= XRController_SelectAction_Performed;
+        _gripAction.action.performed -= XRController_ActivateAction_Performed;
+        _triggerAction.action.canceled -= XRController_SelectAction_Canceled;
+        _gripAction.action.canceled -= XRController_ActivateAction_Canceled;
+    }
+
+    /// <summary>
+    /// Handles trigger input to control the corresponding animation.
+    /// </summary>
+    private void XRController_SelectAction_Performed(InputAction.CallbackContext obj)
+    {
+        float triggerInputValue = obj.ReadValue<float>();
+        _animator.SetFloat(_triggerAnimationParameterID, triggerInputValue);
+    }
+
+    /// <summary>
+    /// Handles grip input to control the corresponding animation.
+    /// </summary>
+    private void XRController_ActivateAction_Performed(InputAction.CallbackContext obj)
+    {
+        float gripInputValue = obj.ReadValue<float>();
+        _animator.SetFloat(_gripAnimationParameterID, gripInputValue);
+    }
+
+    /// <summary>
+    /// Resets trigger animation when the trigger action is canceled.
+    /// </summary>
+    private void XRController_SelectAction_Canceled(InputAction.CallbackContext obj)
+    {
+        float triggerInputValue = 0;
+        _animator.SetFloat(_triggerAnimationParameterID, triggerInputValue);
+    }
+
+    /// <summary>
+    /// Resets grip animation when the grip action is canceled.
+    /// </summary>
+    private void XRController_ActivateAction_Canceled(InputAction.CallbackContext obj)
+    {
+        float gripInputValue = 0;
+        _animator.SetFloat(_gripAnimationParameterID, gripInputValue);
+    }
+}