Add support for OpenXR hand interaction extension

1 files changed, 72 insertions, 0 deletions

diff --git a/modules/openxr/extensions/openxr_hand_interaction_extension.h b/modules/openxr/extensions/openxr_hand_interaction_extension.h
new file mode 100644
index 0000000000..789e300c0b
--- /dev/null
+++ b/modules/openxr/extensions/openxr_hand_interaction_extension.h
@@ -0,0 +1,72 @@
+/**************************************************************************/
+/*  openxr_hand_interaction_extension.h                                   */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef OPENXR_HAND_INTERACTION_EXTENSION_H
+#define OPENXR_HAND_INTERACTION_EXTENSION_H
+
+#include "openxr_extension_wrapper.h"
+
+// When supported the hand interaction extension introduces an interaction
+// profile that becomes active when the user either lets go of their
+// controllers or isn't using controllers at all.
+//
+// The OpenXR specification states that all XR runtimes that support this
+// interaction profile should also allow it's controller to use this
+// interaction profile.
+// This means that if you only supply this interaction profile in your
+// action map, it should work both when the player is holding a controller
+// or using visual hand tracking.
+//
+// This allows easier portability between games that use controller
+// tracking or hand tracking.
+//
+// See: https://registry.khronos.org/OpenXR/specs/1.0/html/xrspec.html#XR_EXT_hand_interaction
+// for more information.
+
+class OpenXRHandInteractionExtension : public OpenXRExtensionWrapper {
+public:
+	static OpenXRHandInteractionExtension *get_singleton();
+
+	OpenXRHandInteractionExtension();
+	virtual ~OpenXRHandInteractionExtension() override;
+
+	virtual HashMap<String, bool *> get_requested_extensions() override;
+
+	bool is_available();
+
+	virtual void on_register_metadata() override;
+
+private:
+	static OpenXRHandInteractionExtension *singleton;
+
+	bool available = false;
+};
+
+#endif // OPENXR_HAND_INTERACTION_EXTENSION_H