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/*************************************************************************/
/* openxr_interface.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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_INTERFACE_H
#define OPENXR_INTERFACE_H
#include "servers/xr/xr_interface.h"
#include "servers/xr/xr_positional_tracker.h"
#include "action_map/openxr_action_map.h"
#include "openxr_api.h"
// declare some default strings
#define INTERACTION_PROFILE_NONE "/interaction_profiles/none"
class OpenXRInterface : public XRInterface {
GDCLASS(OpenXRInterface, XRInterface);
private:
OpenXRAPI *openxr_api = nullptr;
bool initialized = false;
XRInterface::TrackingStatus tracking_state;
// At a minimum we need a tracker for our head
Ref<XRPositionalTracker> head;
Transform3D head_transform;
Vector3 head_linear_velocity;
Vector3 head_angular_velocity;
Transform3D transform_for_view[2]; // We currently assume 2, but could be 4 for VARJO which we do not support yet
void _load_action_map();
struct Action { // An action we've registered with OpenXR
String action_name; // Name of our action as presented to Godot (can be altered from the action map)
OpenXRAction::ActionType action_type; // The action type of this action
RID action_rid; // RID of the action registered with our OpenXR API
};
struct ActionSet { // An action set we've registered with OpenXR
String action_set_name; // Name of our action set
bool is_active; // If true this action set is active and we will sync it
Vector<Action *> actions; // List of actions in this action set
RID action_set_rid; // RID of the action registered with our OpenXR API
};
struct Tracker { // A tracker we've registered with OpenXR
String tracker_name; // Name of our tracker (can be altered from the action map)
Vector<Action *> actions; // Actions related to this tracker
Ref<XRPositionalTracker> positional_tracker; // Our positional tracker object that holds our tracker state
RID tracker_rid; // RID of the tracker registered with our OpenXR API
RID interaction_profile; // RID of the interaction profile bound to this tracker (can be null)
};
Vector<ActionSet *> action_sets;
Vector<RID> interaction_profiles;
Vector<Tracker *> trackers;
ActionSet *create_action_set(const String &p_action_set_name, const String &p_localized_name, const int p_priority);
void free_action_sets();
Action *create_action(ActionSet *p_action_set, const String &p_action_name, const String &p_localized_name, OpenXRAction::ActionType p_action_type, const Vector<Tracker *> p_trackers);
Action *find_action(const String &p_action_name);
void free_actions(ActionSet *p_action_set);
Tracker *find_tracker(const String &p_tracker_name, bool p_create = false);
void link_action_to_tracker(Tracker *p_tracker, Action *p_action);
void handle_tracker(Tracker *p_tracker);
void free_trackers();
void free_interaction_profiles();
void _set_default_pos(Transform3D &p_transform, double p_world_scale, uint64_t p_eye);
protected:
static void _bind_methods();
public:
virtual StringName get_name() const override;
virtual uint32_t get_capabilities() const override;
virtual PackedStringArray get_suggested_tracker_names() const override;
virtual TrackingStatus get_tracking_status() const override;
bool initialise_on_startup() const;
virtual bool is_initialized() const override;
virtual bool initialize() override;
virtual void uninitialize() override;
virtual void trigger_haptic_pulse(const String &p_action_name, const StringName &p_tracker_name, double p_frequency, double p_amplitude, double p_duration_sec, double p_delay_sec = 0) override;
virtual bool supports_play_area_mode(XRInterface::PlayAreaMode p_mode) override;
virtual XRInterface::PlayAreaMode get_play_area_mode() const override;
virtual bool set_play_area_mode(XRInterface::PlayAreaMode p_mode) override;
virtual Size2 get_render_target_size() override;
virtual uint32_t get_view_count() override;
virtual Transform3D get_camera_transform() override;
virtual Transform3D get_transform_for_view(uint32_t p_view, const Transform3D &p_cam_transform) override;
virtual CameraMatrix get_projection_for_view(uint32_t p_view, double p_aspect, double p_z_near, double p_z_far) override;
virtual void process() override;
virtual void pre_render() override;
bool pre_draw_viewport(RID p_render_target) override;
virtual Vector<BlitToScreen> post_draw_viewport(RID p_render_target, const Rect2 &p_screen_rect) override;
virtual void end_frame() override;
void on_state_ready();
void on_state_visible();
void on_state_focused();
void on_state_stopping();
void on_pose_recentered();
void tracker_profile_changed(RID p_tracker, RID p_interaction_profile);
OpenXRInterface();
~OpenXRInterface();
};
#endif // !OPENXR_INTERFACE_H
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