410 lines
13 KiB
C#
410 lines
13 KiB
C#
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using System;
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using UnityEngine.InputSystem.LowLevel;
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namespace UnityEngine.InputSystem.XR
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{
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/// <summary>
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/// The <see cref="TrackedPoseDriver"/> component applies the current pose value of a tracked device
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/// to the <see cref="Transform"/> of the <see cref="GameObject"/>.
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/// <see cref="TrackedPoseDriver"/> can track multiple types of devices including XR HMDs, controllers, and remotes.
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/// </summary>
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/// <remarks>
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/// For <see cref="positionInput"/> and <see cref="rotationInput"/>, if an action is directly defined
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/// in the <see cref="InputActionProperty"/>, as opposed to a reference to an action externally defined
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/// in an <see cref="InputActionAsset"/>, the action will automatically be enabled and disabled by this
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/// behavior during <see cref="OnEnable"/> and <see cref="OnDisable"/>. The enabled state for actions
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/// externally defined must be managed externally from this behavior.
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/// </remarks>
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[Serializable]
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[AddComponentMenu("XR/Tracked Pose Driver (Input System)")]
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public class TrackedPoseDriver : MonoBehaviour, ISerializationCallbackReceiver
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{
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/// <summary>
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/// Options for which <see cref="Transform"/> properties to update.
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/// </summary>
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/// <seealso cref="trackingType"/>
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public enum TrackingType
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{
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/// <summary>
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/// Update both rotation and position.
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/// </summary>
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RotationAndPosition,
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/// <summary>
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/// Update rotation only.
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/// </summary>
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RotationOnly,
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/// <summary>
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/// Update position only.
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/// </summary>
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PositionOnly,
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}
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[SerializeField]
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TrackingType m_TrackingType;
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/// <summary>
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/// The tracking type being used by the Tracked Pose Driver
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/// to control which <see cref="Transform"/> properties to update.
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/// </summary>
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/// <seealso cref="TrackingType"/>
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public TrackingType trackingType
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{
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get => m_TrackingType;
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set => m_TrackingType = value;
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}
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/// <summary>
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/// Options for which phases of the player loop will update <see cref="Transform"/> properties.
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/// </summary>
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/// <seealso cref="updateType"/>
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public enum UpdateType
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{
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/// <summary>
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/// Update after the Input System has completed an update and right before rendering.
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/// </summary>
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/// <seealso cref="InputUpdateType.Dynamic"/>
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/// <seealso cref="InputUpdateType.BeforeRender"/>
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UpdateAndBeforeRender,
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/// <summary>
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/// Update after the Input System has completed an update.
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/// </summary>
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/// <seealso cref="InputUpdateType.Dynamic"/>
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Update,
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/// <summary>
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/// Update right before rendering.
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/// </summary>
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/// <seealso cref="InputUpdateType.BeforeRender"/>
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BeforeRender,
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}
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[SerializeField]
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UpdateType m_UpdateType = UpdateType.UpdateAndBeforeRender;
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/// <summary>
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/// The update type being used by the Tracked Pose Driver
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/// to control which phases of the player loop will update <see cref="Transform"/> properties.
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/// </summary>
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/// <seealso cref="UpdateType"/>
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public UpdateType updateType
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{
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get => m_UpdateType;
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set => m_UpdateType = value;
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}
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[SerializeField]
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InputActionProperty m_PositionInput;
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/// <summary>
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/// The action to read the position value of a tracked device.
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/// Must support reading a value of type <see cref="Vector3"/>.
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/// </summary>
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public InputActionProperty positionInput
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{
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get => m_PositionInput;
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set
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{
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if (Application.isPlaying)
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UnbindPosition();
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m_PositionInput = value;
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if (Application.isPlaying && isActiveAndEnabled)
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BindPosition();
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}
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}
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[SerializeField]
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InputActionProperty m_RotationInput;
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/// <summary>
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/// The action to read the rotation value of a tracked device.
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/// Must support reading a value of type <see cref="Quaternion"/>.
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/// </summary>
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public InputActionProperty rotationInput
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{
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get => m_RotationInput;
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set
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{
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if (Application.isPlaying)
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UnbindRotation();
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m_RotationInput = value;
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if (Application.isPlaying && isActiveAndEnabled)
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BindRotation();
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}
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}
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Vector3 m_CurrentPosition = Vector3.zero;
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Quaternion m_CurrentRotation = Quaternion.identity;
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bool m_RotationBound;
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bool m_PositionBound;
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void BindActions()
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{
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BindPosition();
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BindRotation();
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}
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void BindPosition()
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{
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if (m_PositionBound)
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return;
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var action = m_PositionInput.action;
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if (action == null)
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return;
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action.performed += OnPositionPerformed;
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action.canceled += OnPositionCanceled;
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m_PositionBound = true;
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if (m_PositionInput.reference == null)
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{
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action.Rename($"{gameObject.name} - TPD - Position");
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action.Enable();
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}
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}
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void BindRotation()
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{
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if (m_RotationBound)
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return;
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var action = m_RotationInput.action;
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if (action == null)
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return;
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action.performed += OnRotationPerformed;
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action.canceled += OnRotationCanceled;
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m_RotationBound = true;
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if (m_RotationInput.reference == null)
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{
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action.Rename($"{gameObject.name} - TPD - Rotation");
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action.Enable();
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}
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}
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void UnbindActions()
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{
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UnbindPosition();
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UnbindRotation();
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}
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void UnbindPosition()
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{
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if (!m_PositionBound)
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return;
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var action = m_PositionInput.action;
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if (action == null)
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return;
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if (m_PositionInput.reference == null)
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action.Disable();
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action.performed -= OnPositionPerformed;
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action.canceled -= OnPositionCanceled;
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m_PositionBound = false;
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}
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void UnbindRotation()
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{
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if (!m_RotationBound)
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return;
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var action = m_RotationInput.action;
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if (action == null)
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return;
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if (m_RotationInput.reference == null)
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action.Disable();
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action.performed -= OnRotationPerformed;
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action.canceled -= OnRotationCanceled;
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m_RotationBound = false;
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}
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void OnPositionPerformed(InputAction.CallbackContext context)
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{
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Debug.Assert(m_PositionBound, this);
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m_CurrentPosition = context.ReadValue<Vector3>();
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}
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void OnPositionCanceled(InputAction.CallbackContext context)
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{
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Debug.Assert(m_PositionBound, this);
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m_CurrentPosition = Vector3.zero;
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}
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void OnRotationPerformed(InputAction.CallbackContext context)
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{
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Debug.Assert(m_RotationBound, this);
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m_CurrentRotation = context.ReadValue<Quaternion>();
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}
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void OnRotationCanceled(InputAction.CallbackContext context)
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{
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Debug.Assert(m_RotationBound, this);
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m_CurrentRotation = Quaternion.identity;
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}
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/// <summary>
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/// This function is called when the script instance is being loaded.
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/// </summary>
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protected virtual void Awake()
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{
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#if UNITY_INPUT_SYSTEM_ENABLE_VR && ENABLE_VR
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if (HasStereoCamera())
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{
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UnityEngine.XR.XRDevice.DisableAutoXRCameraTracking(GetComponent<Camera>(), true);
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}
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#endif
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}
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/// <summary>
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/// This function is called when the object becomes enabled and active.
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/// </summary>
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protected void OnEnable()
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{
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InputSystem.onAfterUpdate += UpdateCallback;
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BindActions();
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}
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/// <summary>
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/// This function is called when the object becomes disabled or inactive.
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/// </summary>
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protected void OnDisable()
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{
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UnbindActions();
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InputSystem.onAfterUpdate -= UpdateCallback;
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}
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/// <summary>
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/// This function is called when the <see cref="MonoBehaviour"/> will be destroyed.
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/// </summary>
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protected virtual void OnDestroy()
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{
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#if UNITY_INPUT_SYSTEM_ENABLE_VR && ENABLE_VR
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if (HasStereoCamera())
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{
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UnityEngine.XR.XRDevice.DisableAutoXRCameraTracking(GetComponent<Camera>(), false);
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}
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#endif
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}
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protected void UpdateCallback()
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{
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if (InputState.currentUpdateType == InputUpdateType.BeforeRender)
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OnBeforeRender();
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else
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OnUpdate();
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}
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protected virtual void OnUpdate()
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{
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if (m_UpdateType == UpdateType.Update ||
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m_UpdateType == UpdateType.UpdateAndBeforeRender)
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{
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PerformUpdate();
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}
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}
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protected virtual void OnBeforeRender()
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{
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if (m_UpdateType == UpdateType.BeforeRender ||
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m_UpdateType == UpdateType.UpdateAndBeforeRender)
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{
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PerformUpdate();
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}
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}
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protected virtual void SetLocalTransform(Vector3 newPosition, Quaternion newRotation)
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{
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if (m_TrackingType == TrackingType.RotationAndPosition ||
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m_TrackingType == TrackingType.RotationOnly)
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{
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transform.localRotation = newRotation;
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}
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if (m_TrackingType == TrackingType.RotationAndPosition ||
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m_TrackingType == TrackingType.PositionOnly)
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{
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transform.localPosition = newPosition;
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}
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}
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bool HasStereoCamera()
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{
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var cameraComponent = GetComponent<Camera>();
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return cameraComponent != null && cameraComponent.stereoEnabled;
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}
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protected virtual void PerformUpdate()
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{
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SetLocalTransform(m_CurrentPosition, m_CurrentRotation);
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}
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#region DEPRECATED
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// Disable warnings that these fields are never assigned to. They are set during Unity deserialization and migrated.
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// ReSharper disable UnassignedField.Local
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#pragma warning disable 0649
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[Obsolete]
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[SerializeField, HideInInspector]
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InputAction m_PositionAction;
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public InputAction positionAction
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{
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get => m_PositionInput.action;
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set => positionInput = new InputActionProperty(value);
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}
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[Obsolete]
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[SerializeField, HideInInspector]
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InputAction m_RotationAction;
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public InputAction rotationAction
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{
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get => m_RotationInput.action;
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set => rotationInput = new InputActionProperty(value);
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}
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#pragma warning restore 0649
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// ReSharper restore UnassignedField.Local
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/// <summary>
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/// Stores whether the fields of type <see cref="InputAction"/> have been migrated to fields of type <see cref="InputActionProperty"/>.
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/// </summary>
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[SerializeField, HideInInspector]
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bool m_HasMigratedActions;
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/// <summary>
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/// This function is called when the user hits the Reset button in the Inspector's context menu
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/// or when adding the component the first time. This function is only called in editor mode.
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/// </summary>
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protected void Reset()
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{
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m_HasMigratedActions = true;
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}
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/// <inheritdoc />
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void ISerializationCallbackReceiver.OnBeforeSerialize()
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{
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}
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/// <inheritdoc />
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void ISerializationCallbackReceiver.OnAfterDeserialize()
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{
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if (m_HasMigratedActions)
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return;
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#pragma warning disable 0612
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m_PositionInput = new InputActionProperty(m_PositionAction);
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m_RotationInput = new InputActionProperty(m_RotationAction);
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m_HasMigratedActions = true;
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#pragma warning restore 0612
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}
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#endregion
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}
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}
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