410 lines
14 KiB
C++
410 lines
14 KiB
C++
/*************************************************************************/
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/* xr_server.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "xr_server.h"
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#include "core/config/project_settings.h"
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#include "xr/xr_interface.h"
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#include "xr/xr_positional_tracker.h"
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XRServer *XRServer::singleton = nullptr;
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XRServer *XRServer::get_singleton() {
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return singleton;
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};
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void XRServer::_bind_methods() {
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ClassDB::bind_method(D_METHOD("get_world_scale"), &XRServer::get_world_scale);
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ClassDB::bind_method(D_METHOD("set_world_scale", "scale"), &XRServer::set_world_scale);
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ClassDB::bind_method(D_METHOD("get_reference_frame"), &XRServer::get_reference_frame);
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ClassDB::bind_method(D_METHOD("center_on_hmd", "rotation_mode", "keep_height"), &XRServer::center_on_hmd);
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ClassDB::bind_method(D_METHOD("get_hmd_transform"), &XRServer::get_hmd_transform);
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "world_scale"), "set_world_scale", "get_world_scale");
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ClassDB::bind_method(D_METHOD("add_interface", "interface"), &XRServer::add_interface);
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ClassDB::bind_method(D_METHOD("get_interface_count"), &XRServer::get_interface_count);
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ClassDB::bind_method(D_METHOD("remove_interface", "interface"), &XRServer::remove_interface);
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ClassDB::bind_method(D_METHOD("get_interface", "idx"), &XRServer::get_interface);
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ClassDB::bind_method(D_METHOD("get_interfaces"), &XRServer::get_interfaces);
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ClassDB::bind_method(D_METHOD("find_interface", "name"), &XRServer::find_interface);
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ClassDB::bind_method(D_METHOD("add_tracker", "tracker"), &XRServer::add_tracker);
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ClassDB::bind_method(D_METHOD("remove_tracker", "tracker"), &XRServer::remove_tracker);
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ClassDB::bind_method(D_METHOD("get_trackers", "tracker_types"), &XRServer::get_trackers);
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ClassDB::bind_method(D_METHOD("get_tracker", "tracker_name"), &XRServer::get_tracker);
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ClassDB::bind_method(D_METHOD("get_primary_interface"), &XRServer::get_primary_interface);
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ClassDB::bind_method(D_METHOD("set_primary_interface", "interface"), &XRServer::set_primary_interface);
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ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "primary_interface"), "set_primary_interface", "get_primary_interface");
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BIND_ENUM_CONSTANT(TRACKER_HEAD);
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BIND_ENUM_CONSTANT(TRACKER_CONTROLLER);
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BIND_ENUM_CONSTANT(TRACKER_BASESTATION);
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BIND_ENUM_CONSTANT(TRACKER_ANCHOR);
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BIND_ENUM_CONSTANT(TRACKER_ANY_KNOWN);
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BIND_ENUM_CONSTANT(TRACKER_UNKNOWN);
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BIND_ENUM_CONSTANT(TRACKER_ANY);
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BIND_ENUM_CONSTANT(RESET_FULL_ROTATION);
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BIND_ENUM_CONSTANT(RESET_BUT_KEEP_TILT);
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BIND_ENUM_CONSTANT(DONT_RESET_ROTATION);
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ADD_SIGNAL(MethodInfo("interface_added", PropertyInfo(Variant::STRING_NAME, "interface_name")));
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ADD_SIGNAL(MethodInfo("interface_removed", PropertyInfo(Variant::STRING_NAME, "interface_name")));
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ADD_SIGNAL(MethodInfo("tracker_added", PropertyInfo(Variant::STRING_NAME, "tracker_name"), PropertyInfo(Variant::INT, "type")));
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ADD_SIGNAL(MethodInfo("tracker_updated", PropertyInfo(Variant::STRING_NAME, "tracker_name"), PropertyInfo(Variant::INT, "type")));
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ADD_SIGNAL(MethodInfo("tracker_removed", PropertyInfo(Variant::STRING_NAME, "tracker_name"), PropertyInfo(Variant::INT, "type")));
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};
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double XRServer::get_world_scale() const {
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return world_scale;
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};
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void XRServer::set_world_scale(double p_world_scale) {
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if (p_world_scale < 0.01) {
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p_world_scale = 0.01;
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} else if (p_world_scale > 1000.0) {
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p_world_scale = 1000.0;
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}
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world_scale = p_world_scale;
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};
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Transform3D XRServer::get_world_origin() const {
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return world_origin;
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};
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void XRServer::set_world_origin(const Transform3D &p_world_origin) {
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world_origin = p_world_origin;
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};
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Transform3D XRServer::get_reference_frame() const {
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return reference_frame;
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};
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void XRServer::center_on_hmd(RotationMode p_rotation_mode, bool p_keep_height) {
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if (primary_interface == nullptr) {
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return;
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}
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if (primary_interface->get_play_area_mode() == XRInterface::XR_PLAY_AREA_STAGE) {
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// center_on_hmd is not available in this mode
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reference_frame = Transform3D();
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return;
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}
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// clear our current reference frame or we'll end up double adjusting it
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reference_frame = Transform3D();
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// requesting our EYE_MONO transform should return our current HMD position
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Transform3D new_reference_frame = primary_interface->get_camera_transform();
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// remove our tilt
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if (p_rotation_mode == 1) {
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// take the Y out of our Z
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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());
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// Y is straight up
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new_reference_frame.basis.set_column(1, Vector3(0.0, 1.0, 0.0));
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// and X is our cross reference
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new_reference_frame.basis.set_column(0, new_reference_frame.basis.get_column(1).cross(new_reference_frame.basis.get_column(2)).normalized());
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} else if (p_rotation_mode == 2) {
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// remove our rotation, we're only interesting in centering on position
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new_reference_frame.basis = Basis();
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};
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// don't negate our height
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if (p_keep_height) {
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new_reference_frame.origin.y = 0.0;
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};
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reference_frame = new_reference_frame.inverse();
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};
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Transform3D XRServer::get_hmd_transform() {
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Transform3D hmd_transform;
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if (primary_interface != nullptr) {
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hmd_transform = primary_interface->get_camera_transform();
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};
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return hmd_transform;
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};
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void XRServer::add_interface(const Ref<XRInterface> &p_interface) {
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ERR_FAIL_COND(p_interface.is_null());
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for (int i = 0; i < interfaces.size(); i++) {
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if (interfaces[i] == p_interface) {
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ERR_PRINT("Interface was already added");
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return;
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};
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};
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interfaces.push_back(p_interface);
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emit_signal(SNAME("interface_added"), p_interface->get_name());
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};
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void XRServer::remove_interface(const Ref<XRInterface> &p_interface) {
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ERR_FAIL_COND(p_interface.is_null());
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int idx = -1;
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for (int i = 0; i < interfaces.size(); i++) {
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if (interfaces[i] == p_interface) {
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idx = i;
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break;
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};
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};
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ERR_FAIL_COND_MSG(idx == -1, "Interface not found.");
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print_verbose("XR: Removed interface" + p_interface->get_name());
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emit_signal(SNAME("interface_removed"), p_interface->get_name());
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interfaces.remove_at(idx);
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};
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int XRServer::get_interface_count() const {
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return interfaces.size();
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};
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Ref<XRInterface> XRServer::get_interface(int p_index) const {
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ERR_FAIL_INDEX_V(p_index, interfaces.size(), nullptr);
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return interfaces[p_index];
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};
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Ref<XRInterface> XRServer::find_interface(const String &p_name) const {
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int idx = -1;
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for (int i = 0; i < interfaces.size(); i++) {
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if (interfaces[i]->get_name() == p_name) {
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idx = i;
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break;
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};
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};
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ERR_FAIL_COND_V_MSG(idx == -1, nullptr, "Interface not found.");
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return interfaces[idx];
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};
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Array XRServer::get_interfaces() const {
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Array ret;
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for (int i = 0; i < interfaces.size(); i++) {
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Dictionary iface_info;
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iface_info["id"] = i;
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iface_info["name"] = interfaces[i]->get_name();
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ret.push_back(iface_info);
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};
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return ret;
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};
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Ref<XRInterface> XRServer::get_primary_interface() const {
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return primary_interface;
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};
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void XRServer::set_primary_interface(const Ref<XRInterface> &p_primary_interface) {
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if (p_primary_interface.is_null()) {
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print_verbose("XR: Clearing primary interface");
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primary_interface.unref();
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} else {
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primary_interface = p_primary_interface;
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print_verbose("XR: Primary interface set to: " + primary_interface->get_name());
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}
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};
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void XRServer::add_tracker(Ref<XRPositionalTracker> p_tracker) {
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ERR_FAIL_COND(p_tracker.is_null());
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StringName tracker_name = p_tracker->get_tracker_name();
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if (trackers.has(tracker_name)) {
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if (trackers[tracker_name] != p_tracker) {
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// We already have a tracker with this name, we're going to replace it
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trackers[tracker_name] = p_tracker;
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emit_signal(SNAME("tracker_updated"), tracker_name, p_tracker->get_tracker_type());
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}
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} else {
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trackers[tracker_name] = p_tracker;
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emit_signal(SNAME("tracker_added"), tracker_name, p_tracker->get_tracker_type());
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}
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};
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void XRServer::remove_tracker(Ref<XRPositionalTracker> p_tracker) {
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ERR_FAIL_COND(p_tracker.is_null());
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StringName tracker_name = p_tracker->get_tracker_name();
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if (trackers.has(tracker_name)) {
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// we send the signal right before removing it
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emit_signal(SNAME("tracker_removed"), p_tracker->get_tracker_name(), p_tracker->get_tracker_type());
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// and remove it
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trackers.erase(tracker_name);
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}
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};
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Dictionary XRServer::get_trackers(int p_tracker_types) {
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Dictionary res;
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for (int i = 0; i < trackers.size(); i++) {
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Ref<XRPositionalTracker> tracker = trackers.get_value_at_index(i);
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if (tracker.is_valid() && (tracker->get_tracker_type() & p_tracker_types) != 0) {
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res[tracker->get_tracker_name()] = tracker;
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}
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}
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return res;
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}
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Ref<XRPositionalTracker> XRServer::get_tracker(const StringName &p_name) const {
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if (trackers.has(p_name)) {
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return trackers[p_name];
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} else {
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// tracker hasn't been registered yet, which is fine, no need to spam the error log...
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return Ref<XRPositionalTracker>();
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}
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};
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PackedStringArray XRServer::get_suggested_tracker_names() const {
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PackedStringArray arr;
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for (int i = 0; i < interfaces.size(); i++) {
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Ref<XRInterface> interface = interfaces[i];
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PackedStringArray interface_arr = interface->get_suggested_tracker_names();
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for (int a = 0; a < interface_arr.size(); a++) {
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if (!arr.has(interface_arr[a])) {
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arr.push_back(interface_arr[a]);
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}
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}
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}
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if (arr.size() == 0) {
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// no suggestions from our tracker? include our defaults
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arr.push_back(String("head"));
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arr.push_back(String("left_hand"));
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arr.push_back(String("right_hand"));
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}
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return arr;
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}
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PackedStringArray XRServer::get_suggested_pose_names(const StringName &p_tracker_name) const {
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PackedStringArray arr;
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for (int i = 0; i < interfaces.size(); i++) {
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Ref<XRInterface> interface = interfaces[i];
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PackedStringArray interface_arr = interface->get_suggested_pose_names(p_tracker_name);
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for (int a = 0; a < interface_arr.size(); a++) {
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if (!arr.has(interface_arr[a])) {
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arr.push_back(interface_arr[a]);
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}
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}
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}
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if (arr.size() == 0) {
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// no suggestions from our tracker? include our defaults
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arr.push_back(String("default"));
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if ((p_tracker_name == "left_hand") || (p_tracker_name == "right_hand")) {
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arr.push_back(String("aim"));
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arr.push_back(String("grip"));
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arr.push_back(String("skeleton"));
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}
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}
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return arr;
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}
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void XRServer::_process() {
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// called from our main game loop before we handle physics and game logic
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// note that we can have multiple interfaces active if we have interfaces that purely handle tracking
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// process all active interfaces
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for (int i = 0; i < interfaces.size(); i++) {
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if (!interfaces[i].is_valid()) {
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// ignore, not a valid reference
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} else if (interfaces[i]->is_initialized()) {
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interfaces.write[i]->process();
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};
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};
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};
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void XRServer::pre_render() {
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// called from RendererViewport.draw_viewports right before we start drawing our viewports
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// note that we can have multiple interfaces active if we have interfaces that purely handle tracking
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// process all active interfaces
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for (int i = 0; i < interfaces.size(); i++) {
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if (!interfaces[i].is_valid()) {
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// ignore, not a valid reference
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} else if (interfaces[i]->is_initialized()) {
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interfaces.write[i]->pre_render();
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};
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};
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}
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void XRServer::end_frame() {
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// called from RenderingServerDefault after Vulkan queues have been submitted
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// process all active interfaces
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for (int i = 0; i < interfaces.size(); i++) {
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if (!interfaces[i].is_valid()) {
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// ignore, not a valid reference
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} else if (interfaces[i]->is_initialized()) {
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interfaces.write[i]->end_frame();
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};
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};
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}
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XRServer::XRServer() {
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singleton = this;
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world_scale = 1.0;
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};
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XRServer::~XRServer() {
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primary_interface.unref();
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while (interfaces.size() > 0) {
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interfaces.remove_at(0);
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}
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// TODO pretty sure there is a clear function or something...
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while (trackers.size() > 0) {
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trackers.erase(trackers.get_key_at_index(0));
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}
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singleton = nullptr;
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};
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