Table of Contents

Class XRServerInstance

Namespace
Godot
Assembly
GodotSharp.dll

The AR/VR server is the heart of our Advanced and Virtual Reality solution and handles all the processing.

[GodotClassName("XRServer")]
public class XRServerInstance : GodotObject, IDisposable
Inheritance
XRServerInstance
Implements
Inherited Members

Properties

PrimaryInterface

The primary XRInterface currently bound to the XRServer.

public XRInterface PrimaryInterface { get; set; }

Property Value

XRInterface

WorldOrigin

The current origin of our tracking space in the virtual world. This is used by the renderer to properly position the camera with new tracking data.

Note: This property is managed by the current XROrigin3D node. It is exposed for access from GDExtensions.

public Transform3D WorldOrigin { get; set; }

Property Value

Transform3D

WorldScale

The scale of the game world compared to the real world. By default, most AR/VR platforms assume that 1 game unit corresponds to 1 real world meter.

public double WorldScale { get; set; }

Property Value

double

Methods

AddInterface(XRInterface)

Registers an XRInterface object.

public void AddInterface(XRInterface @interface)

Parameters

interface XRInterface

AddTracker(XRPositionalTracker)

Registers a new XRPositionalTracker that tracks a spatial location in real space.

public void AddTracker(XRPositionalTracker tracker)

Parameters

tracker XRPositionalTracker

CenterOnHmd(RotationMode, bool)

This is an important function to understand correctly. AR and VR platforms all handle positioning slightly differently.

For platforms that do not offer spatial tracking, our origin point (0, 0, 0) is the location of our HMD, but you have little control over the direction the player is facing in the real world.

For platforms that do offer spatial tracking, our origin point depends very much on the system. For OpenVR, our origin point is usually the center of the tracking space, on the ground. For other platforms, it's often the location of the tracking camera.

This method allows you to center your tracker on the location of the HMD. It will take the current location of the HMD and use that to adjust all your tracking data; in essence, realigning the real world to your player's current position in the game world.

For this method to produce usable results, tracking information must be available. This often takes a few frames after starting your game.

You should call this method after a few seconds have passed. For example, when the user requests a realignment of the display holding a designated button on a controller for a short period of time, or when implementing a teleport mechanism.

public void CenterOnHmd(XRServer.RotationMode rotationMode, bool keepHeight)

Parameters

rotationMode XRServer.RotationMode
keepHeight bool

FindInterface(string)

Finds an interface by its name. For example, if your project uses capabilities of an AR/VR platform, you can find the interface for that platform by name and initialize it.

public XRInterface FindInterface(string name)

Parameters

name string

Returns

XRInterface

GetHmdTransform()

Returns the primary interface's transformation.

public Transform3D GetHmdTransform()

Returns

Transform3D

GetInterface(int)

Returns the interface registered at the given idx index in the list of interfaces.

public XRInterface GetInterface(int idx)

Parameters

idx int

Returns

XRInterface

GetInterfaceCount()

Returns the number of interfaces currently registered with the AR/VR server. If your project supports multiple AR/VR platforms, you can look through the available interface, and either present the user with a selection or simply try to initialize each interface and use the first one that returns true.

public int GetInterfaceCount()

Returns

int

GetInterfaces()

Returns a list of available interfaces the ID and name of each interface.

public Array<Dictionary> GetInterfaces()

Returns

Array<Dictionary>

GetReferenceFrame()

Returns the reference frame transform. Mostly used internally and exposed for GDExtension build interfaces.

public Transform3D GetReferenceFrame()

Returns

Transform3D

GetTracker(StringName)

Returns the positional tracker with the given trackerName.

public XRPositionalTracker GetTracker(StringName trackerName)

Parameters

trackerName StringName

Returns

XRPositionalTracker

GetTrackers(int)

Returns a dictionary of trackers for trackerTypes.

public Dictionary GetTrackers(int trackerTypes)

Parameters

trackerTypes int

Returns

Dictionary

HasGodotClassMethod(in godot_string_name)

Check if the type contains a method with the given name. This method is used by Godot to check if a method exists before invoking it. Do not call or override this method.

protected override bool HasGodotClassMethod(in godot_string_name method)

Parameters

method godot_string_name

Name of the method to check for.

Returns

bool

HasGodotClassSignal(in godot_string_name)

Check if the type contains a signal with the given name. This method is used by Godot to check if a signal exists before raising it. Do not call or override this method.

protected override bool HasGodotClassSignal(in godot_string_name signal)

Parameters

signal godot_string_name

Name of the signal to check for.

Returns

bool

InvokeGodotClassMethod(in godot_string_name, NativeVariantPtrArgs, out godot_variant)

Invokes the method with the given name, using the given arguments. This method is used by Godot to invoke methods from the engine side. Do not call or override this method.

protected override bool InvokeGodotClassMethod(in godot_string_name method, NativeVariantPtrArgs args, out godot_variant ret)

Parameters

method godot_string_name

Name of the method to invoke.

args NativeVariantPtrArgs

Arguments to use with the invoked method.

ret godot_variant

Value returned by the invoked method.

Returns

bool

RemoveInterface(XRInterface)

Removes this interface.

public void RemoveInterface(XRInterface @interface)

Parameters

interface XRInterface

RemoveTracker(XRPositionalTracker)

Removes this positional tracker.

public void RemoveTracker(XRPositionalTracker tracker)

Parameters

tracker XRPositionalTracker

Events

InterfaceAdded

Emitted when a new interface has been added.

public event XRServerInstance.InterfaceAddedEventHandler InterfaceAdded

Event Type

XRServerInstance.InterfaceAddedEventHandler

InterfaceRemoved

Emitted when an interface is removed.

public event XRServerInstance.InterfaceRemovedEventHandler InterfaceRemoved

Event Type

XRServerInstance.InterfaceRemovedEventHandler

TrackerAdded

Emitted when a new tracker has been added. If you don't use a fixed number of controllers or if you're using XRAnchor3Ds for an AR solution, it is important to react to this signal to add the appropriate XRController3D or XRAnchor3D nodes related to this new tracker.

public event XRServerInstance.TrackerAddedEventHandler TrackerAdded

Event Type

XRServerInstance.TrackerAddedEventHandler

TrackerRemoved

Emitted when a tracker is removed. You should remove any XRController3D or XRAnchor3D points if applicable. This is not mandatory, the nodes simply become inactive and will be made active again when a new tracker becomes available (i.e. a new controller is switched on that takes the place of the previous one).

public event XRServerInstance.TrackerRemovedEventHandler TrackerRemoved

Event Type

XRServerInstance.TrackerRemovedEventHandler

TrackerUpdated

Emitted when an existing tracker has been updated. This can happen if the user switches controllers.

public event XRServerInstance.TrackerUpdatedEventHandler TrackerUpdated

Event Type

XRServerInstance.TrackerUpdatedEventHandler