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Assets/SteamVR/Scripts/SteamVR_TrackedObject.cs

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+//======= Copyright (c) Valve Corporation, All rights reserved. ===============
+//
+// Purpose: For controlling in-game objects with tracked devices.
+//
+//=============================================================================
+
+using UnityEngine;
+using Valve.VR;
+
+public class SteamVR_TrackedObject : MonoBehaviour
+{
+	public enum EIndex
+	{
+		None = -1,
+		Hmd = (int)OpenVR.k_unTrackedDeviceIndex_Hmd,
+		Device1,
+		Device2,
+		Device3,
+		Device4,
+		Device5,
+		Device6,
+		Device7,
+		Device8,
+		Device9,
+		Device10,
+		Device11,
+		Device12,
+		Device13,
+		Device14,
+		Device15
+	}
+
+	public EIndex index;
+
+	[Tooltip("If not set, relative to parent")]
+	public Transform origin;
+
+    public bool isValid { get; private set; }
+
+	private void OnNewPoses(TrackedDevicePose_t[] poses)
+	{
+		if (index == EIndex.None)
+			return;
+
+		var i = (int)index;
+
+        isValid = false;
+		if (poses.Length <= i)
+			return;
+
+		if (!poses[i].bDeviceIsConnected)
+			return;
+
+		if (!poses[i].bPoseIsValid)
+			return;
+
+        isValid = true;
+
+		var pose = new SteamVR_Utils.RigidTransform(poses[i].mDeviceToAbsoluteTracking);
+
+		if (origin != null)
+		{
+			transform.position = origin.transform.TransformPoint(pose.pos);
+			transform.rotation = origin.rotation * pose.rot;
+		}
+		else
+		{
+			transform.localPosition = pose.pos;
+			transform.localRotation = pose.rot;
+		}
+	}
+
+	SteamVR_Events.Action newPosesAction;
+
+	SteamVR_TrackedObject()
+	{
+		newPosesAction = SteamVR_Events.NewPosesAction(OnNewPoses);
+	}
+
+	void OnEnable()
+	{
+		var render = SteamVR_Render.instance;
+		if (render == null)
+		{
+			enabled = false;
+			return;
+		}
+
+		newPosesAction.enabled = true;
+	}
+
+	void OnDisable()
+	{
+		newPosesAction.enabled = false;
+		isValid = false;
+	}
+
+	public void SetDeviceIndex(int index)
+	{
+		if (System.Enum.IsDefined(typeof(EIndex), index))
+			this.index = (EIndex)index;
+	}
+}
+