522 lines
16 KiB
C++
522 lines
16 KiB
C++
/*************************************************************************/
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/* webxr_interface_js.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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#ifdef JAVASCRIPT_ENABLED
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#include "webxr_interface_js.h"
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#include "core/input/input.h"
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#include "core/os/os.h"
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#include "emscripten.h"
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#include "godot_webxr.h"
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#include "servers/rendering/renderer_compositor.h"
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#include <stdlib.h>
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void _emwebxr_on_session_supported(char *p_session_mode, int p_supported) {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL(xr_server);
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Ref<XRInterface> interface = xr_server->find_interface("WebXR");
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ERR_FAIL_COND(interface.is_null());
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String session_mode = String(p_session_mode);
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interface->emit_signal(SNAME("session_supported"), session_mode, p_supported ? true : false);
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}
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void _emwebxr_on_session_started(char *p_reference_space_type) {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL(xr_server);
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Ref<XRInterface> interface = xr_server->find_interface("WebXR");
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ERR_FAIL_COND(interface.is_null());
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String reference_space_type = String(p_reference_space_type);
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static_cast<WebXRInterfaceJS *>(interface.ptr())->_set_reference_space_type(reference_space_type);
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interface->emit_signal(SNAME("session_started"));
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}
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void _emwebxr_on_session_ended() {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL(xr_server);
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Ref<XRInterface> interface = xr_server->find_interface("WebXR");
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ERR_FAIL_COND(interface.is_null());
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interface->uninitialize();
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interface->emit_signal(SNAME("session_ended"));
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}
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void _emwebxr_on_session_failed(char *p_message) {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL(xr_server);
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Ref<XRInterface> interface = xr_server->find_interface("WebXR");
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ERR_FAIL_COND(interface.is_null());
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interface->uninitialize();
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String message = String(p_message);
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interface->emit_signal(SNAME("session_failed"), message);
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}
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void _emwebxr_on_controller_changed() {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL(xr_server);
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Ref<XRInterface> interface = xr_server->find_interface("WebXR");
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ERR_FAIL_COND(interface.is_null());
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static_cast<WebXRInterfaceJS *>(interface.ptr())->_on_controller_changed();
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}
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extern "C" EMSCRIPTEN_KEEPALIVE void _emwebxr_on_input_event(char *p_signal_name, int p_input_source) {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL(xr_server);
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Ref<XRInterface> interface = xr_server->find_interface("WebXR");
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ERR_FAIL_COND(interface.is_null());
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StringName signal_name = StringName(p_signal_name);
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interface->emit_signal(signal_name, p_input_source + 1);
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}
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extern "C" EMSCRIPTEN_KEEPALIVE void _emwebxr_on_simple_event(char *p_signal_name) {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL(xr_server);
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Ref<XRInterface> interface = xr_server->find_interface("WebXR");
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ERR_FAIL_COND(interface.is_null());
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StringName signal_name = StringName(p_signal_name);
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interface->emit_signal(signal_name);
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}
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void WebXRInterfaceJS::is_session_supported(const String &p_session_mode) {
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godot_webxr_is_session_supported(p_session_mode.utf8().get_data(), &_emwebxr_on_session_supported);
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}
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void WebXRInterfaceJS::set_session_mode(String p_session_mode) {
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session_mode = p_session_mode;
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}
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String WebXRInterfaceJS::get_session_mode() const {
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return session_mode;
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}
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void WebXRInterfaceJS::set_required_features(String p_required_features) {
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required_features = p_required_features;
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}
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String WebXRInterfaceJS::get_required_features() const {
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return required_features;
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}
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void WebXRInterfaceJS::set_optional_features(String p_optional_features) {
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optional_features = p_optional_features;
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}
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String WebXRInterfaceJS::get_optional_features() const {
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return optional_features;
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}
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void WebXRInterfaceJS::set_requested_reference_space_types(String p_requested_reference_space_types) {
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requested_reference_space_types = p_requested_reference_space_types;
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}
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String WebXRInterfaceJS::get_requested_reference_space_types() const {
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return requested_reference_space_types;
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}
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void WebXRInterfaceJS::_set_reference_space_type(String p_reference_space_type) {
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reference_space_type = p_reference_space_type;
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}
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String WebXRInterfaceJS::get_reference_space_type() const {
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return reference_space_type;
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}
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Ref<XRPositionalTracker> WebXRInterfaceJS::get_controller(int p_controller_id) const {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL_V(xr_server, Ref<XRPositionalTracker>());
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// TODO support more then two controllers
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if (p_controller_id >= 0 && p_controller_id < 2) {
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return controllers[p_controller_id];
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};
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return Ref<XRPositionalTracker>();
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}
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String WebXRInterfaceJS::get_visibility_state() const {
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char *c_str = godot_webxr_get_visibility_state();
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if (c_str) {
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String visibility_state = String(c_str);
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free(c_str);
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return visibility_state;
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}
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return String();
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}
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PackedVector3Array WebXRInterfaceJS::get_bounds_geometry() const {
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PackedVector3Array ret;
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int *js_bounds = godot_webxr_get_bounds_geometry();
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if (js_bounds) {
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ret.resize(js_bounds[0]);
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for (int i = 0; i < js_bounds[0]; i++) {
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float *js_vector3 = ((float *)js_bounds) + (i * 3) + 1;
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ret.set(i, Vector3(js_vector3[0], js_vector3[1], js_vector3[2]));
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}
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free(js_bounds);
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}
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return ret;
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}
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StringName WebXRInterfaceJS::get_name() const {
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return "WebXR";
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};
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uint32_t WebXRInterfaceJS::get_capabilities() const {
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return XRInterface::XR_STEREO | XRInterface::XR_MONO;
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};
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uint32_t WebXRInterfaceJS::get_view_count() {
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return godot_webxr_get_view_count();
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};
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bool WebXRInterfaceJS::is_initialized() const {
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return (initialized);
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};
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bool WebXRInterfaceJS::initialize() {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL_V(xr_server, false);
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if (!initialized) {
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if (!godot_webxr_is_supported()) {
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return false;
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}
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if (requested_reference_space_types.size() == 0) {
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return false;
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}
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// we must create a tracker for our head
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head_tracker.instantiate();
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head_tracker->set_tracker_type(XRServer::TRACKER_HEAD);
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head_tracker->set_tracker_name("head");
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head_tracker->set_tracker_desc("Players head");
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xr_server->add_tracker(head_tracker);
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// make this our primary interface
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xr_server->set_primary_interface(this);
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// Clear render_targetsize to make sure it gets reset to the new size.
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// Clearing in uninitialize() doesn't work because a frame can still be
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// rendered after it's called, which will fill render_targetsize again.
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render_targetsize.width = 0;
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render_targetsize.height = 0;
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initialized = true;
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godot_webxr_initialize(
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session_mode.utf8().get_data(),
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required_features.utf8().get_data(),
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optional_features.utf8().get_data(),
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requested_reference_space_types.utf8().get_data(),
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&_emwebxr_on_session_started,
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&_emwebxr_on_session_ended,
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&_emwebxr_on_session_failed,
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&_emwebxr_on_controller_changed,
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&_emwebxr_on_input_event,
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&_emwebxr_on_simple_event);
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};
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return true;
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};
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void WebXRInterfaceJS::uninitialize() {
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if (initialized) {
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XRServer *xr_server = XRServer::get_singleton();
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if (xr_server != nullptr) {
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if (head_tracker.is_valid()) {
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xr_server->remove_tracker(head_tracker);
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head_tracker.unref();
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}
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if (xr_server->get_primary_interface() == this) {
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// no longer our primary interface
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xr_server->set_primary_interface(nullptr);
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}
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}
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godot_webxr_uninitialize();
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reference_space_type = "";
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initialized = false;
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};
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};
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Transform3D WebXRInterfaceJS::_js_matrix_to_transform(float *p_js_matrix) {
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Transform3D transform;
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transform.basis.rows[0].x = p_js_matrix[0];
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transform.basis.rows[1].x = p_js_matrix[1];
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transform.basis.rows[2].x = p_js_matrix[2];
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transform.basis.rows[0].y = p_js_matrix[4];
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transform.basis.rows[1].y = p_js_matrix[5];
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transform.basis.rows[2].y = p_js_matrix[6];
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transform.basis.rows[0].z = p_js_matrix[8];
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transform.basis.rows[1].z = p_js_matrix[9];
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transform.basis.rows[2].z = p_js_matrix[10];
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transform.origin.x = p_js_matrix[12];
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transform.origin.y = p_js_matrix[13];
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transform.origin.z = p_js_matrix[14];
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return transform;
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}
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Size2 WebXRInterfaceJS::get_render_target_size() {
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if (render_targetsize.width != 0 && render_targetsize.height != 0) {
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return render_targetsize;
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}
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int *js_size = godot_webxr_get_render_target_size();
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if (!initialized || js_size == nullptr) {
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// As a temporary default (until WebXR is fully initialized), use half the window size.
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Size2 temp = DisplayServer::get_singleton()->window_get_size();
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temp.width /= 2.0;
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return temp;
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}
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render_targetsize.width = js_size[0];
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render_targetsize.height = js_size[1];
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free(js_size);
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return render_targetsize;
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};
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Transform3D WebXRInterfaceJS::get_camera_transform() {
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Transform3D transform_for_eye;
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL_V(xr_server, transform_for_eye);
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float *js_matrix = godot_webxr_get_transform_for_eye(0);
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if (!initialized || js_matrix == nullptr) {
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return transform_for_eye;
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}
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transform_for_eye = _js_matrix_to_transform(js_matrix);
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free(js_matrix);
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return xr_server->get_reference_frame() * transform_for_eye;
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};
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Transform3D WebXRInterfaceJS::get_transform_for_view(uint32_t p_view, const Transform3D &p_cam_transform) {
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Transform3D transform_for_eye;
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL_V(xr_server, transform_for_eye);
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float *js_matrix = godot_webxr_get_transform_for_eye(p_view + 1);
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if (!initialized || js_matrix == nullptr) {
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transform_for_eye = p_cam_transform;
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return transform_for_eye;
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}
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transform_for_eye = _js_matrix_to_transform(js_matrix);
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free(js_matrix);
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return p_cam_transform * xr_server->get_reference_frame() * transform_for_eye;
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};
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Projection WebXRInterfaceJS::get_projection_for_view(uint32_t p_view, double p_aspect, double p_z_near, double p_z_far) {
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Projection eye;
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float *js_matrix = godot_webxr_get_projection_for_eye(p_view + 1);
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if (!initialized || js_matrix == nullptr) {
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return eye;
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}
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int k = 0;
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for (int i = 0; i < 4; i++) {
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for (int j = 0; j < 4; j++) {
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eye.matrix[i][j] = js_matrix[k++];
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}
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}
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free(js_matrix);
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// Copied from godot_oculus_mobile's ovr_mobile_session.cpp
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eye.matrix[2][2] = -(p_z_far + p_z_near) / (p_z_far - p_z_near);
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eye.matrix[3][2] = -(2.0f * p_z_far * p_z_near) / (p_z_far - p_z_near);
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return eye;
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}
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Vector<BlitToScreen> WebXRInterfaceJS::post_draw_viewport(RID p_render_target, const Rect2 &p_screen_rect) {
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Vector<BlitToScreen> blit_to_screen;
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if (!initialized) {
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return blit_to_screen;
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}
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// @todo Refactor this to be based on "views" rather than "eyes".
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godot_webxr_commit_for_eye(1);
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if (godot_webxr_get_view_count() > 1) {
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godot_webxr_commit_for_eye(2);
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}
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return blit_to_screen;
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};
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void WebXRInterfaceJS::process() {
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if (initialized) {
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godot_webxr_sample_controller_data();
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if (head_tracker.is_valid()) {
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// TODO set default pose to our head location (i.e. get_camera_transform without world scale and reference frame applied)
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// head_tracker->set_pose("default", head_transform, Vector3(), Vector3());
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}
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int controller_count = godot_webxr_get_controller_count();
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if (controller_count == 0) {
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return;
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}
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for (int i = 0; i < controller_count; i++) {
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_update_tracker(i);
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}
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};
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};
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void WebXRInterfaceJS::_update_tracker(int p_controller_id) {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL(xr_server);
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// need to support more then two controllers...
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if (p_controller_id < 0 || p_controller_id > 1) {
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return;
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}
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Ref<XRPositionalTracker> tracker = controllers[p_controller_id];
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if (godot_webxr_is_controller_connected(p_controller_id)) {
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if (tracker.is_null()) {
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tracker.instantiate();
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tracker->set_tracker_type(XRServer::TRACKER_CONTROLLER);
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// Controller id's 0 and 1 are always the left and right hands.
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if (p_controller_id < 2) {
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tracker->set_tracker_name(p_controller_id == 0 ? "left_hand" : "right_hand");
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tracker->set_tracker_desc(p_controller_id == 0 ? "Left hand controller" : "Right hand controller");
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tracker->set_tracker_hand(p_controller_id == 0 ? XRPositionalTracker::TRACKER_HAND_LEFT : XRPositionalTracker::TRACKER_HAND_RIGHT);
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} else {
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char name[1024];
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sprintf(name, "tracker_%i", p_controller_id);
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tracker->set_tracker_name(name);
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tracker->set_tracker_desc(name);
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}
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xr_server->add_tracker(tracker);
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}
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float *tracker_matrix = godot_webxr_get_controller_transform(p_controller_id);
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if (tracker_matrix) {
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// Note, poses should NOT have world scale and our reference frame applied!
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Transform3D transform = _js_matrix_to_transform(tracker_matrix);
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tracker->set_pose("default", transform, Vector3(), Vector3());
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free(tracker_matrix);
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}
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// TODO implement additional poses such as "aim" and "grip"
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int *buttons = godot_webxr_get_controller_buttons(p_controller_id);
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if (buttons) {
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// TODO buttons should be named properly, this is just a temporary fix
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for (int i = 0; i < buttons[0]; i++) {
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char name[1024];
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sprintf(name, "button_%i", i);
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float value = *((float *)buttons + (i + 1));
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bool state = value > 0.0;
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tracker->set_input(name, state);
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}
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free(buttons);
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}
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int *axes = godot_webxr_get_controller_axes(p_controller_id);
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if (axes) {
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// TODO again just a temporary fix, split these between proper float and vector2 inputs
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for (int i = 0; i < axes[0]; i++) {
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char name[1024];
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sprintf(name, "axis_%i", i);
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|
|
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float value = *((float *)axes + (i + 1));
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|
tracker->set_input(name, value);
|
|
}
|
|
free(axes);
|
|
}
|
|
} else if (tracker.is_valid()) {
|
|
xr_server->remove_tracker(tracker);
|
|
controllers[p_controller_id].unref();
|
|
}
|
|
}
|
|
|
|
void WebXRInterfaceJS::_on_controller_changed() {
|
|
// Register "virtual" gamepads with Godot for the ones we get from WebXR.
|
|
godot_webxr_sample_controller_data();
|
|
for (int i = 0; i < 2; i++) {
|
|
bool controller_connected = godot_webxr_is_controller_connected(i);
|
|
if (controllers_state[i] != controller_connected) {
|
|
// Input::get_singleton()->joy_connection_changed(i + 100, controller_connected, i == 0 ? "Left" : "Right", "");
|
|
controllers_state[i] = controller_connected;
|
|
}
|
|
}
|
|
}
|
|
|
|
WebXRInterfaceJS::WebXRInterfaceJS() {
|
|
initialized = false;
|
|
session_mode = "inline";
|
|
requested_reference_space_types = "local";
|
|
};
|
|
|
|
WebXRInterfaceJS::~WebXRInterfaceJS() {
|
|
// and make sure we cleanup if we haven't already
|
|
if (initialized) {
|
|
uninitialize();
|
|
};
|
|
};
|
|
|
|
#endif // JAVASCRIPT_ENABLED
|