error CS0619: 'XRDevice.isPresent' is obsolete: 'This is obsolete, and should no longer be used. Instead, find the active XRDisplaySubsystem and check that the running property is true (for details, see XRDevice.isPresent documentation).'
因为在2017版本后unity.Engine.VR就过时了，换成了XR，所以我们需要对一些项目维护进行对应的更改。网上查了很多资料，基本没有确切对应的解决方案，于是使用leap motion官方升级文档对比查看，解决方案如下：
public static bool IsXRDevicePresent() {
#if UNITY_2020_1_OR_NEWER
return XRSettings.isDeviceActive;
#elif UNITY_2017_2_OR_NEWER
return XRDevice.isPresent;
#else
return VRDevice.isPresent;
#endif
}我们可以直接使用XRSettings.isDeviceActive代替XRDevice.isPresent。
对应版本同上。
附所有有关XR的过时报错更改：对照上述参考
using System.Collections.Generic; using UnityEngine; #if UNITY_2017_2_OR_NEWER using UnityEngine.XR; #else using UnityEngine.VR; #endif namespace Leap.Unity { /// <summary> /// Wraps various (but not all) "XR" calls with Unity 5.6-supporting "VR" calls /// via #ifdefs. /// </summary> public static class XRSupportUtil { #if UNITY_2019_2_OR_NEWER private static System.Collections.Generic.List<XRNodeState> nodeStates = new System.Collections.Generic.List<XRNodeState>(); #endif public static bool IsXREnabled() { #if UNITY_2017_2_OR_NEWER return XRSettings.enabled; #else return VRSettings.enabled; #endif } public static bool IsXRDevicePresent() { #if UNITY_2020_1_OR_NEWER return XRSettings.isDeviceActive; #elif UNITY_2017_2_OR_NEWER return XRDevice.isPresent; #else return VRDevice.isPresent; #endif } static bool outputPresenceWarning = false; public static bool IsUserPresent(bool defaultPresence = true) { #if UNITY_2019_3_OR_NEWER var devices = new List<InputDevice>(); InputDevices.GetDevicesWithCharacteristics(InputDeviceCharacteristics.HeadMounted, devices); if (devices.Count == 0 && !outputPresenceWarning) { Debug.LogWarning("No head-mounted devices found. Possibly no HMD is available to the XR system."); outputPresenceWarning = true; } if (devices.Count != 0) { var device = devices[0]; if (device.TryGetFeatureValue(CommonUsages.userPresence, out var userPresent)) { return userPresent; } } #elif UNITY_2017_2_OR_NEWER var userPresence = XRDevice.userPresence; if (userPresence == UserPresenceState.Present) { return true; } else if (!outputPresenceWarning && userPresence == UserPresenceState.Unsupported) { Debug.LogWarning("XR UserPresenceState unsupported (XR support is probably disabled)."); outputPresenceWarning = true; } #else if (!outputPresenceWarning){ Debug.LogWarning("XR UserPresenceState is only supported in 2017.2 and newer."); outputPresenceWarning = true; } #endif return defaultPresence; } public static Vector3 GetXRNodeCenterEyeLocalPosition() { #if UNITY_2019_2_OR_NEWER InputTracking.GetNodeStates(nodeStates); Vector3 position; foreach(XRNodeState state in nodeStates) { if(state.nodeType == XRNode.CenterEye && state.TryGetPosition(out position)) { return position; } } return Vector3.zero; #elif UNITY_2017_2_OR_NEWER return InputTracking.GetLocalPosition(XRNode.CenterEye); #else return InputTracking.GetLocalPosition(VRNode.CenterEye); #endif } public static Quaternion GetXRNodeCenterEyeLocalRotation() { #if UNITY_2019_2_OR_NEWER InputTracking.GetNodeStates(nodeStates); Quaternion rotation; foreach (XRNodeState state in nodeStates) { if (state.nodeType == XRNode.CenterEye && state.TryGetRotation(out rotation)) { return rotation; } } return Quaternion.identity; #elif UNITY_2017_2_OR_NEWER return InputTracking.GetLocalRotation(XRNode.CenterEye); #else return InputTracking.GetLocalRotation(VRNode.CenterEye); #endif } public static Vector3 GetXRNodeHeadLocalPosition() { #if UNITY_2019_2_OR_NEWER InputTracking.GetNodeStates(nodeStates); Vector3 position; foreach(XRNodeState state in nodeStates) { if(state.nodeType == XRNode.Head && state.TryGetPosition(out position)) { return position; } } return Vector3.zero; #elif UNITY_2017_2_OR_NEWER return InputTracking.GetLocalPosition(XRNode.Head); #else return InputTracking.GetLocalPosition(VRNode.Head); #endif } public static Quaternion GetXRNodeHeadLocalRotation() { #if UNITY_2019_2_OR_NEWER InputTracking.GetNodeStates(nodeStates); Quaternion rotation; foreach (XRNodeState state in nodeStates) { if (state.nodeType == XRNode.Head && state.TryGetRotation(out rotation)) { return rotation; } } return Quaternion.identity; #elif UNITY_2017_2_OR_NEWER return InputTracking.GetLocalRotation(XRNode.Head); #else return InputTracking.GetLocalRotation(VRNode.Head); #endif } public static Vector3 GetXRNodeLocalPosition(int node) { #if UNITY_2019_2_OR_NEWER InputTracking.GetNodeStates(nodeStates); Vector3 position; foreach(XRNodeState state in nodeStates) { if(state.nodeType == (XRNode)node && state.TryGetPosition(out position)) { return position; } } return Vector3.zero; #elif UNITY_2017_2_OR_NEWER return InputTracking.GetLocalPosition((XRNode)node); #else return InputTracking.GetLocalPosition((VRNode)node); #endif } public static Quaternion GetXRNodeLocalRotation(int node) { #if UNITY_2019_2_OR_NEWER InputTracking.GetNodeStates(nodeStates); Quaternion rotation; foreach (XRNodeState state in nodeStates) { if (state.nodeType == (XRNode)node && state.TryGetRotation(out rotation)) { return rotation; } } return Quaternion.identity; #elif UNITY_2017_2_OR_NEWER return InputTracking.GetLocalRotation((XRNode)node); #else return InputTracking.GetLocalRotation((VRNode)node); #endif } public static void Recenter() { #if UNITY_2019_3_OR_NEWER var devices = new List<InputDevice>(); InputDevices.GetDevicesWithCharacteristics(InputDeviceCharacteristics.HeadMounted, devices); if (devices.Count == 0) return; var hmdDevice = devices[0]; #if !UNITY_2020_1_OR_NEWER if(hmdDevice.subsystem != null) { #endif hmdDevice.subsystem.TryRecenter(); #if !UNITY_2020_1_OR_NEWER }else{ #pragma warning disable 0618 InputTracking.Recenter(); #pragma warning restore 0618 } #endif #else InputTracking.Recenter(); #endif } public static string GetLoadedDeviceName() { #if UNITY_2017_2_OR_NEWER return XRSettings.loadedDeviceName; #else return VRSettings.loadedDeviceName; #endif } /// <summary> Returns whether there's a floor available. </summary> public static bool IsRoomScale() { #if UNITY_2019_3_OR_NEWER var devices = new List<InputDevice>(); InputDevices.GetDevicesWithCharacteristics(InputDeviceCharacteristics.HeadMounted, devices); if (devices.Count == 0) return false; var hmdDevice = devices[0]; #if !UNITY_2020_1_OR_NEWER if(hmdDevice.subsystem != null) { #endif return hmdDevice.subsystem.GetTrackingOriginMode().HasFlag(TrackingOriginModeFlags.Floor); #if !UNITY_2020_1_OR_NEWER }else{ #pragma warning disable 0618 return XRDevice.GetTrackingSpaceType() == TrackingSpaceType.RoomScale; #pragma warning restore 0618 } #endif #elif UNITY_2017_2_OR_NEWER return XRDevice.GetTrackingSpaceType() == TrackingSpaceType.RoomScale; #else return VRDevice.GetTrackingSpaceType() == TrackingSpaceType.RoomScale; #endif } static List<Vector3> _boundaryPoints = new List<Vector3>(); /// <summary> Returns whether the playspace is larger than 1m on its shortest side. </summary> public static bool IsLargePlayspace() { #if UNITY_2020_1_OR_NEWER // Oculus reports a floor centered space now... var devices = new List<InputDevice>(); InputDevices.GetDevicesWithCharacteristics(InputDeviceCharacteristics.HeadMounted, devices); if (devices.Count == 0) return false; var hmdDevice = devices[0]; hmdDevice.subsystem.TryGetBoundaryPoints(_boundaryPoints); Bounds playspaceSize = new Bounds(); foreach(Vector3 boundaryPoint in _boundaryPoints) { playspaceSize.Encapsulate(boundaryPoint); } return playspaceSize.size.magnitude > 1f; // Playspace is greater than 1m on its shortest axis #else return IsRoomScale(); #endif } public static float GetGPUTime() { float gpuTime = 0f; #if UNITY_5_6_OR_NEWER #if UNITY_2017_2_OR_NEWER UnityEngine.XR.XRStats.TryGetGPUTimeLastFrame(out gpuTime); #else UnityEngine.VR.VRStats.TryGetGPUTimeLastFrame(out gpuTime); #endif #else gpuTime = UnityEngine.VR.VRStats.gpuTimeLastFrame; #endif return gpuTime; } } }