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godot/servers/xr_server.cpp

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/**************************************************************************/
/* xr_server.cpp */
/**************************************************************************/
/* 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. */
/**************************************************************************/
#include "xr_server.h"
#include "core/config/project_settings.h"
#include "xr/xr_face_tracker.h"
#include "xr/xr_hand_tracker.h"
#include "xr/xr_interface.h"
#include "xr/xr_positional_tracker.h"
XRServer::XRMode XRServer::xr_mode = XRMODE_DEFAULT;
XRServer::XRMode XRServer::get_xr_mode() {
return xr_mode;
}
void XRServer::set_xr_mode(XRServer::XRMode p_mode) {
xr_mode = p_mode;
}
XRServer *XRServer::singleton = nullptr;
XRServer *XRServer::get_singleton() {
return singleton;
};
void XRServer::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_world_scale"), &XRServer::get_world_scale);
ClassDB::bind_method(D_METHOD("set_world_scale", "scale"), &XRServer::set_world_scale);
ClassDB::bind_method(D_METHOD("get_world_origin"), &XRServer::get_world_origin);
ClassDB::bind_method(D_METHOD("set_world_origin", "world_origin"), &XRServer::set_world_origin);
ClassDB::bind_method(D_METHOD("get_reference_frame"), &XRServer::get_reference_frame);
ClassDB::bind_method(D_METHOD("clear_reference_frame"), &XRServer::get_reference_frame);
ClassDB::bind_method(D_METHOD("center_on_hmd", "rotation_mode", "keep_height"), &XRServer::center_on_hmd);
ClassDB::bind_method(D_METHOD("get_hmd_transform"), &XRServer::get_hmd_transform);
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "world_scale"), "set_world_scale", "get_world_scale");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "world_origin"), "set_world_origin", "get_world_origin");
ClassDB::bind_method(D_METHOD("add_interface", "interface"), &XRServer::add_interface);
ClassDB::bind_method(D_METHOD("get_interface_count"), &XRServer::get_interface_count);
ClassDB::bind_method(D_METHOD("remove_interface", "interface"), &XRServer::remove_interface);
ClassDB::bind_method(D_METHOD("get_interface", "idx"), &XRServer::get_interface);
ClassDB::bind_method(D_METHOD("get_interfaces"), &XRServer::get_interfaces);
ClassDB::bind_method(D_METHOD("find_interface", "name"), &XRServer::find_interface);
ClassDB::bind_method(D_METHOD("add_tracker", "tracker"), &XRServer::add_tracker);
ClassDB::bind_method(D_METHOD("remove_tracker", "tracker"), &XRServer::remove_tracker);
ClassDB::bind_method(D_METHOD("get_trackers", "tracker_types"), &XRServer::get_trackers);
ClassDB::bind_method(D_METHOD("get_tracker", "tracker_name"), &XRServer::get_tracker);
ClassDB::bind_method(D_METHOD("add_hand_tracker", "tracker_name", "hand_tracker"), &XRServer::add_hand_tracker);
ClassDB::bind_method(D_METHOD("remove_hand_tracker", "tracker_name"), &XRServer::remove_hand_tracker);
ClassDB::bind_method(D_METHOD("get_hand_trackers"), &XRServer::get_hand_trackers);
ClassDB::bind_method(D_METHOD("get_hand_tracker", "tracker_name"), &XRServer::get_hand_tracker);
ClassDB::bind_method(D_METHOD("add_face_tracker", "tracker_name", "face_tracker"), &XRServer::add_face_tracker);
ClassDB::bind_method(D_METHOD("remove_face_tracker", "tracker_name"), &XRServer::remove_face_tracker);
ClassDB::bind_method(D_METHOD("get_face_trackers"), &XRServer::get_face_trackers);
ClassDB::bind_method(D_METHOD("get_face_tracker", "tracker_name"), &XRServer::get_face_tracker);
ClassDB::bind_method(D_METHOD("get_primary_interface"), &XRServer::get_primary_interface);
ClassDB::bind_method(D_METHOD("set_primary_interface", "interface"), &XRServer::set_primary_interface);
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "primary_interface"), "set_primary_interface", "get_primary_interface");
BIND_ENUM_CONSTANT(TRACKER_HEAD);
BIND_ENUM_CONSTANT(TRACKER_CONTROLLER);
BIND_ENUM_CONSTANT(TRACKER_BASESTATION);
BIND_ENUM_CONSTANT(TRACKER_ANCHOR);
BIND_ENUM_CONSTANT(TRACKER_ANY_KNOWN);
BIND_ENUM_CONSTANT(TRACKER_UNKNOWN);
BIND_ENUM_CONSTANT(TRACKER_ANY);
BIND_ENUM_CONSTANT(RESET_FULL_ROTATION);
BIND_ENUM_CONSTANT(RESET_BUT_KEEP_TILT);
BIND_ENUM_CONSTANT(DONT_RESET_ROTATION);
ADD_SIGNAL(MethodInfo("interface_added", PropertyInfo(Variant::STRING_NAME, "interface_name")));
ADD_SIGNAL(MethodInfo("interface_removed", PropertyInfo(Variant::STRING_NAME, "interface_name")));
ADD_SIGNAL(MethodInfo("tracker_added", PropertyInfo(Variant::STRING_NAME, "tracker_name"), PropertyInfo(Variant::INT, "type")));
ADD_SIGNAL(MethodInfo("tracker_updated", PropertyInfo(Variant::STRING_NAME, "tracker_name"), PropertyInfo(Variant::INT, "type")));
ADD_SIGNAL(MethodInfo("tracker_removed", PropertyInfo(Variant::STRING_NAME, "tracker_name"), PropertyInfo(Variant::INT, "type")));
ADD_SIGNAL(MethodInfo("hand_tracker_added", PropertyInfo(Variant::STRING_NAME, "tracker_name"), PropertyInfo(Variant::OBJECT, "hand_tracker", PROPERTY_HINT_RESOURCE_TYPE, "XRHandTracker")));
ADD_SIGNAL(MethodInfo("hand_tracker_updated", PropertyInfo(Variant::STRING_NAME, "tracker_name"), PropertyInfo(Variant::OBJECT, "hand_tracker", PROPERTY_HINT_RESOURCE_TYPE, "XRHandTracker")));
ADD_SIGNAL(MethodInfo("hand_tracker_removed", PropertyInfo(Variant::STRING_NAME, "tracker_name")));
ADD_SIGNAL(MethodInfo("face_tracker_added", PropertyInfo(Variant::STRING_NAME, "tracker_name"), PropertyInfo(Variant::OBJECT, "face_tracker", PROPERTY_HINT_RESOURCE_TYPE, "XRFaceTracker")));
ADD_SIGNAL(MethodInfo("face_tracker_updated", PropertyInfo(Variant::STRING_NAME, "tracker_name"), PropertyInfo(Variant::OBJECT, "face_tracker", PROPERTY_HINT_RESOURCE_TYPE, "XRFaceTracker")));
ADD_SIGNAL(MethodInfo("face_tracker_removed", PropertyInfo(Variant::STRING_NAME, "tracker_name")));
};
double XRServer::get_world_scale() const {
return world_scale;
};
void XRServer::set_world_scale(double p_world_scale) {
if (p_world_scale < 0.01) {
p_world_scale = 0.01;
} else if (p_world_scale > 1000.0) {
p_world_scale = 1000.0;
}
world_scale = p_world_scale;
};
Transform3D XRServer::get_world_origin() const {
return world_origin;
};
void XRServer::set_world_origin(const Transform3D &p_world_origin) {
world_origin = p_world_origin;
};
Transform3D XRServer::get_reference_frame() const {
return reference_frame;
};
void XRServer::center_on_hmd(RotationMode p_rotation_mode, bool p_keep_height) {
if (primary_interface == nullptr) {
return;
}
// clear our current reference frame or we'll end up double adjusting it
reference_frame = Transform3D();
// requesting our EYE_MONO transform should return our current HMD position
Transform3D new_reference_frame = primary_interface->get_camera_transform();
// remove our tilt
if (p_rotation_mode == 1) {
// take the Y out of our Z
new_reference_frame.basis.set_column(2, Vector3(new_reference_frame.basis.rows[0][2], 0.0, new_reference_frame.basis.rows[2][2]).normalized());
// Y is straight up
new_reference_frame.basis.set_column(1, Vector3(0.0, 1.0, 0.0));
// and X is our cross reference
new_reference_frame.basis.set_column(0, new_reference_frame.basis.get_column(1).cross(new_reference_frame.basis.get_column(2)).normalized());
} else if (p_rotation_mode == 2) {
// remove our rotation, we're only interesting in centering on position
new_reference_frame.basis = Basis();
};
// don't negate our height
if (p_keep_height) {
new_reference_frame.origin.y = 0.0;
};
reference_frame = new_reference_frame.inverse();
};
void XRServer::clear_reference_frame() {
reference_frame = Transform3D();
}
Transform3D XRServer::get_hmd_transform() {
Transform3D hmd_transform;
if (primary_interface != nullptr) {
hmd_transform = primary_interface->get_camera_transform();
};
return hmd_transform;
};
void XRServer::add_interface(const Ref<XRInterface> &p_interface) {
ERR_FAIL_COND(p_interface.is_null());
for (int i = 0; i < interfaces.size(); i++) {
if (interfaces[i] == p_interface) {
ERR_PRINT("Interface was already added");
return;
};
};
interfaces.push_back(p_interface);
emit_signal(SNAME("interface_added"), p_interface->get_name());
};
void XRServer::remove_interface(const Ref<XRInterface> &p_interface) {
ERR_FAIL_COND(p_interface.is_null());
int idx = -1;
for (int i = 0; i < interfaces.size(); i++) {
if (interfaces[i] == p_interface) {
idx = i;
break;
};
};
ERR_FAIL_COND_MSG(idx == -1, "Interface not found.");
print_verbose("XR: Removed interface \"" + p_interface->get_name() + "\"");
emit_signal(SNAME("interface_removed"), p_interface->get_name());
interfaces.remove_at(idx);
};
int XRServer::get_interface_count() const {
return interfaces.size();
};
Ref<XRInterface> XRServer::get_interface(int p_index) const {
ERR_FAIL_INDEX_V(p_index, interfaces.size(), nullptr);
return interfaces[p_index];
};
Ref<XRInterface> XRServer::find_interface(const String &p_name) const {
for (int i = 0; i < interfaces.size(); i++) {
if (interfaces[i]->get_name() == p_name) {
return interfaces[i];
};
};
return Ref<XRInterface>();
};
TypedArray<Dictionary> XRServer::get_interfaces() const {
Array ret;
for (int i = 0; i < interfaces.size(); i++) {
Dictionary iface_info;
iface_info["id"] = i;
iface_info["name"] = interfaces[i]->get_name();
ret.push_back(iface_info);
};
return ret;
};
Ref<XRInterface> XRServer::get_primary_interface() const {
return primary_interface;
};
void XRServer::set_primary_interface(const Ref<XRInterface> &p_primary_interface) {
if (p_primary_interface.is_null()) {
print_verbose("XR: Clearing primary interface");
primary_interface.unref();
} else {
primary_interface = p_primary_interface;
print_verbose("XR: Primary interface set to: " + primary_interface->get_name());
}
};
void XRServer::add_tracker(Ref<XRPositionalTracker> p_tracker) {
ERR_FAIL_COND(p_tracker.is_null());
StringName tracker_name = p_tracker->get_tracker_name();
if (trackers.has(tracker_name)) {
if (trackers[tracker_name] != p_tracker) {
// We already have a tracker with this name, we're going to replace it
trackers[tracker_name] = p_tracker;
emit_signal(SNAME("tracker_updated"), tracker_name, p_tracker->get_tracker_type());
}
} else {
trackers[tracker_name] = p_tracker;
emit_signal(SNAME("tracker_added"), tracker_name, p_tracker->get_tracker_type());
}
};
void XRServer::remove_tracker(Ref<XRPositionalTracker> p_tracker) {
ERR_FAIL_COND(p_tracker.is_null());
StringName tracker_name = p_tracker->get_tracker_name();
if (trackers.has(tracker_name)) {
// we send the signal right before removing it
emit_signal(SNAME("tracker_removed"), p_tracker->get_tracker_name(), p_tracker->get_tracker_type());
// and remove it
trackers.erase(tracker_name);
}
};
Dictionary XRServer::get_trackers(int p_tracker_types) {
Dictionary res;
for (int i = 0; i < trackers.size(); i++) {
Ref<XRPositionalTracker> tracker = trackers.get_value_at_index(i);
if (tracker.is_valid() && (tracker->get_tracker_type() & p_tracker_types) != 0) {
res[tracker->get_tracker_name()] = tracker;
}
}
return res;
}
Ref<XRPositionalTracker> XRServer::get_tracker(const StringName &p_name) const {
if (trackers.has(p_name)) {
return trackers[p_name];
} else {
// tracker hasn't been registered yet, which is fine, no need to spam the error log...
return Ref<XRPositionalTracker>();
}
};
PackedStringArray XRServer::get_suggested_tracker_names() const {
PackedStringArray arr;
for (int i = 0; i < interfaces.size(); i++) {
Ref<XRInterface> interface = interfaces[i];
PackedStringArray interface_arr = interface->get_suggested_tracker_names();
for (int a = 0; a < interface_arr.size(); a++) {
if (!arr.has(interface_arr[a])) {
arr.push_back(interface_arr[a]);
}
}
}
if (arr.size() == 0) {
// no suggestions from our tracker? include our defaults
arr.push_back(String("head"));
arr.push_back(String("left_hand"));
arr.push_back(String("right_hand"));
}
return arr;
}
PackedStringArray XRServer::get_suggested_pose_names(const StringName &p_tracker_name) const {
PackedStringArray arr;
for (int i = 0; i < interfaces.size(); i++) {
Ref<XRInterface> interface = interfaces[i];
PackedStringArray interface_arr = interface->get_suggested_pose_names(p_tracker_name);
for (int a = 0; a < interface_arr.size(); a++) {
if (!arr.has(interface_arr[a])) {
arr.push_back(interface_arr[a]);
}
}
}
if (arr.size() == 0) {
// no suggestions from our tracker? include our defaults
arr.push_back(String("default"));
if ((p_tracker_name == "left_hand") || (p_tracker_name == "right_hand")) {
arr.push_back(String("aim"));
arr.push_back(String("grip"));
arr.push_back(String("skeleton"));
}
}
return arr;
}
void XRServer::add_hand_tracker(const StringName &p_tracker_name, Ref<XRHandTracker> p_hand_tracker) {
ERR_FAIL_COND(p_hand_tracker.is_null());
if (!hand_trackers.has(p_tracker_name)) {
// We don't have a tracker with this name, we're going to add it.
hand_trackers[p_tracker_name] = p_hand_tracker;
emit_signal(SNAME("hand_tracker_added"), p_tracker_name, p_hand_tracker);
} else if (hand_trackers[p_tracker_name] != p_hand_tracker) {
// We already have a tracker with this name, we're going to replace it.
hand_trackers[p_tracker_name] = p_hand_tracker;
emit_signal(SNAME("hand_tracker_updated"), p_tracker_name, p_hand_tracker);
}
}
void XRServer::remove_hand_tracker(const StringName &p_tracker_name) {
// Skip if no hand tracker is found.
if (!hand_trackers.has(p_tracker_name)) {
return;
}
// Send the removed signal, then remove the hand tracker.
emit_signal(SNAME("hand_tracker_removed"), p_tracker_name);
hand_trackers.erase(p_tracker_name);
}
Dictionary XRServer::get_hand_trackers() const {
return hand_trackers;
}
Ref<XRHandTracker> XRServer::get_hand_tracker(const StringName &p_tracker_name) const {
// Skip if no tracker is found.
if (!hand_trackers.has(p_tracker_name)) {
return Ref<XRHandTracker>();
}
return hand_trackers[p_tracker_name];
}
void XRServer::add_face_tracker(const StringName &p_tracker_name, Ref<XRFaceTracker> p_face_tracker) {
ERR_FAIL_COND(p_face_tracker.is_null());
if (!face_trackers.has(p_tracker_name)) {
// We don't have a tracker with this name, we're going to add it.
face_trackers[p_tracker_name] = p_face_tracker;
emit_signal(SNAME("face_tracker_added"), p_tracker_name, p_face_tracker);
} else if (face_trackers[p_tracker_name] != p_face_tracker) {
// We already have a tracker with this name, we're going to replace it.
face_trackers[p_tracker_name] = p_face_tracker;
emit_signal(SNAME("face_tracker_updated"), p_tracker_name, p_face_tracker);
}
}
void XRServer::remove_face_tracker(const StringName &p_tracker_name) {
// Skip if no face tracker is found.
if (!face_trackers.has(p_tracker_name)) {
return;
}
// Send the removed signal, then remove the face tracker.
emit_signal(SNAME("face_tracker_removed"), p_tracker_name);
face_trackers.erase(p_tracker_name);
}
Dictionary XRServer::get_face_trackers() const {
return face_trackers;
}
Ref<XRFaceTracker> XRServer::get_face_tracker(const StringName &p_tracker_name) const {
// Skip if no tracker is found.
if (!face_trackers.has(p_tracker_name)) {
return Ref<XRFaceTracker>();
}
return face_trackers[p_tracker_name];
}
void XRServer::_process() {
// called from our main game loop before we handle physics and game logic
// note that we can have multiple interfaces active if we have interfaces that purely handle tracking
// process all active interfaces
for (int i = 0; i < interfaces.size(); i++) {
if (!interfaces[i].is_valid()) {
// ignore, not a valid reference
} else if (interfaces[i]->is_initialized()) {
interfaces.write[i]->process();
};
};
};
void XRServer::pre_render() {
// called from RendererViewport.draw_viewports right before we start drawing our viewports
// note that we can have multiple interfaces active if we have interfaces that purely handle tracking
// process all active interfaces
for (int i = 0; i < interfaces.size(); i++) {
if (!interfaces[i].is_valid()) {
// ignore, not a valid reference
} else if (interfaces[i]->is_initialized()) {
interfaces.write[i]->pre_render();
};
};
}
void XRServer::end_frame() {
// called from RenderingServerDefault after Vulkan queues have been submitted
// process all active interfaces
for (int i = 0; i < interfaces.size(); i++) {
if (!interfaces[i].is_valid()) {
// ignore, not a valid reference
} else if (interfaces[i]->is_initialized()) {
interfaces.write[i]->end_frame();
};
};
}
XRServer::XRServer() {
singleton = this;
world_scale = 1.0;
};
XRServer::~XRServer() {
primary_interface.unref();
while (interfaces.size() > 0) {
interfaces.remove_at(0);
}
// TODO pretty sure there is a clear function or something...
while (trackers.size() > 0) {
trackers.erase(trackers.get_key_at_index(0));
}
singleton = nullptr;
};
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