diff options
Diffstat (limited to 'modules/webxr/doc_classes/WebXRInterface.xml')
| -rw-r--r-- | modules/webxr/doc_classes/WebXRInterface.xml | 124 |
1 files changed, 63 insertions, 61 deletions
diff --git a/modules/webxr/doc_classes/WebXRInterface.xml b/modules/webxr/doc_classes/WebXRInterface.xml index 9469e4d055..2407d44496 100644 --- a/modules/webxr/doc_classes/WebXRInterface.xml +++ b/modules/webxr/doc_classes/WebXRInterface.xml @@ -10,77 +10,79 @@ Since WebXR is based on Javascript, it makes extensive use of callbacks, which means that [WebXRInterface] is forced to use signals, where other AR/VR interfaces would instead use functions that return a result immediately. This makes [WebXRInterface] quite a bit more complicated to intialize than other AR/VR interfaces. Here's the minimum code required to start an immersive VR session: [codeblock] - var webxr_interface - var vr_supported = false + extends Node3D - func _ready(): - # We assume this node has a button as a child. - # This button is for the user to consent to entering immersive VR mode. - $Button.connect("pressed", self, "_on_Button_pressed") + var webxr_interface + var vr_supported = false - webxr_interface = XRServer.find_interface("WebXR") - if webxr_interface: - # WebXR uses a lot of asynchronous callbacks, so we connect to various - # signals in order to receive them. - webxr_interface.connect("session_supported", self, "_webxr_session_supported") - webxr_interface.connect("session_started", self, "_webxr_session_started") - webxr_interface.connect("session_ended", self, "_webxr_session_ended") - webxr_interface.connect("session_failed", self, "_webxr_session_failed") + func _ready(): + # We assume this node has a button as a child. + # This button is for the user to consent to entering immersive VR mode. + $Button.connect("pressed", self, "_on_Button_pressed") - # This returns immediately - our _webxr_session_supported() method - # (which we connected to the "session_supported" signal above) will - # be called sometime later to let us know if it's supported or not. - webxr_interface.is_session_supported("immersive-vr") + webxr_interface = XRServer.find_interface("WebXR") + if webxr_interface: + # WebXR uses a lot of asynchronous callbacks, so we connect to various + # signals in order to receive them. + webxr_interface.connect("session_supported", self, "_webxr_session_supported") + webxr_interface.connect("session_started", self, "_webxr_session_started") + webxr_interface.connect("session_ended", self, "_webxr_session_ended") + webxr_interface.connect("session_failed", self, "_webxr_session_failed") - func _webxr_session_supported(session_mode, supported): - if session_mode == 'immersive-vr': - vr_supported = supported + # This returns immediately - our _webxr_session_supported() method + # (which we connected to the "session_supported" signal above) will + # be called sometime later to let us know if it's supported or not. + webxr_interface.is_session_supported("immersive-vr") - func _on_Button_pressed(): - if not vr_supported: - OS.alert("Your browser doesn't support VR") - return + func _webxr_session_supported(session_mode, supported): + if session_mode == 'immersive-vr': + vr_supported = supported - # We want an immersive VR session, as opposed to AR ('immersive-ar') or a - # simple 3DoF viewer ('viewer'). - webxr_interface.session_mode = 'immersive-vr' - # 'bounded-floor' is room scale, 'local-floor' is a standing or sitting - # experience (it puts you 1.6m above the ground if you have 3DoF headset), - # whereas as 'local' puts you down at the XROrigin. - # This list means it'll first try to request 'bounded-floor', then - # fallback on 'local-floor' and ultimately 'local', if nothing else is - # supported. - webxr_interface.requested_reference_space_types = 'bounded-floor, local-floor, local' - # In order to use 'local-floor' or 'bounded-floor' we must also - # mark the features as required or optional. - webxr_interface.required_features = 'local-floor' - webxr_interface.optional_features = 'bounded-floor' + func _on_Button_pressed(): + if not vr_supported: + OS.alert("Your browser doesn't support VR") + return - # This will return false if we're unable to even request the session, - # however, it can still fail asynchronously later in the process, so we - # only know if it's really succeeded or failed when our - # _webxr_session_started() or _webxr_session_failed() methods are called. - if not webxr_interface.initialize(): - OS.alert("Failed to initialize") - return + # We want an immersive VR session, as opposed to AR ('immersive-ar') or a + # simple 3DoF viewer ('viewer'). + webxr_interface.session_mode = 'immersive-vr' + # 'bounded-floor' is room scale, 'local-floor' is a standing or sitting + # experience (it puts you 1.6m above the ground if you have 3DoF headset), + # whereas as 'local' puts you down at the XROrigin. + # This list means it'll first try to request 'bounded-floor', then + # fallback on 'local-floor' and ultimately 'local', if nothing else is + # supported. + webxr_interface.requested_reference_space_types = 'bounded-floor, local-floor, local' + # In order to use 'local-floor' or 'bounded-floor' we must also + # mark the features as required or optional. + webxr_interface.required_features = 'local-floor' + webxr_interface.optional_features = 'bounded-floor' - func _webxr_session_started(): - $Button.visible = false - # This tells Godot to start rendering to the headset. - get_viewport().xr = true - # This will be the reference space type you ultimately got, out of the - # types that you requested above. This is useful if you want the game to - # work a little differently in 'bounded-floor' versus 'local-floor'. - print ("Reference space type: " + webxr_interface.reference_space_type) + # This will return false if we're unable to even request the session, + # however, it can still fail asynchronously later in the process, so we + # only know if it's really succeeded or failed when our + # _webxr_session_started() or _webxr_session_failed() methods are called. + if not webxr_interface.initialize(): + OS.alert("Failed to initialize") + return - func _webxr_session_ended(): - $Button.visible = true - # If the user exits immersive mode, then we tell Godot to render to the web - # page again. - get_viewport().xr = false + func _webxr_session_started(): + $Button.visible = false + # This tells Godot to start rendering to the headset. + get_viewport().xr = true + # This will be the reference space type you ultimately got, out of the + # types that you requested above. This is useful if you want the game to + # work a little differently in 'bounded-floor' versus 'local-floor'. + print ("Reference space type: " + webxr_interface.reference_space_type) - func _webxr_session_failed(message): - OS.alert("Failed to initialize: " + message) + func _webxr_session_ended(): + $Button.visible = true + # If the user exits immersive mode, then we tell Godot to render to the web + # page again. + get_viewport().xr = false + + func _webxr_session_failed(message): + OS.alert("Failed to initialize: " + message) [/codeblock] There are several ways to handle "controller" input: - Using [XRController3D] nodes and their [signal XRController3D.button_pressed] and [signal XRController3D.button_released] signals. This is how controllers are typically handled in AR/VR apps in Godot, however, this will only work with advanced VR controllers like the Oculus Touch or Index controllers, for example. The buttons codes are defined by [url=https://immersive-web.github.io/webxr-gamepads-module/#xr-standard-gamepad-mapping]Section 3.3 of the WebXR Gamepads Module[/url]. |