e2083871eb
The API is implemented in javascript, and generates C functions that can be called from godot. This allows much cleaner code replacing all `EM_ASM` calls in our C++ code with plain C function calls. This also gets rid of few hacks and comes with few optimizations (e.g. custom cursor shapes should be much faster now).
214 lines
7 KiB
C++
214 lines
7 KiB
C++
/*************************************************************************/
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/* os_javascript.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) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 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 "os_javascript.h"
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#include "core/debugger/engine_debugger.h"
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#include "core/io/file_access_buffered_fa.h"
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#include "core/io/json.h"
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#include "drivers/unix/dir_access_unix.h"
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#include "drivers/unix/file_access_unix.h"
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#include "main/main.h"
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#include "modules/modules_enabled.gen.h"
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#include "platform/javascript/display_server_javascript.h"
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#ifdef MODULE_WEBSOCKET_ENABLED
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#include "modules/websocket/remote_debugger_peer_websocket.h"
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#endif
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#include <emscripten.h>
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#include <stdlib.h>
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#include "godot_js.h"
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// Lifecycle
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void OS_JavaScript::initialize() {
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OS_Unix::initialize_core();
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FileAccess::make_default<FileAccessBufferedFA<FileAccessUnix>>(FileAccess::ACCESS_RESOURCES);
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DisplayServerJavaScript::register_javascript_driver();
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#ifdef MODULE_WEBSOCKET_ENABLED
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EngineDebugger::register_uri_handler("ws://", RemoteDebuggerPeerWebSocket::create);
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EngineDebugger::register_uri_handler("wss://", RemoteDebuggerPeerWebSocket::create);
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#endif
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}
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void OS_JavaScript::resume_audio() {
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if (audio_driver_javascript) {
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audio_driver_javascript->resume();
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}
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}
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void OS_JavaScript::set_main_loop(MainLoop *p_main_loop) {
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main_loop = p_main_loop;
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}
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MainLoop *OS_JavaScript::get_main_loop() const {
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return main_loop;
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}
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void OS_JavaScript::fs_sync_callback() {
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get_singleton()->idb_is_syncing = false;
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}
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bool OS_JavaScript::main_loop_iterate() {
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if (is_userfs_persistent() && idb_needs_sync && !idb_is_syncing) {
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idb_is_syncing = true;
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idb_needs_sync = false;
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godot_js_os_fs_sync(&fs_sync_callback);
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}
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DisplayServer::get_singleton()->process_events();
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return Main::iteration();
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}
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void OS_JavaScript::delete_main_loop() {
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if (main_loop) {
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memdelete(main_loop);
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}
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main_loop = nullptr;
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}
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void OS_JavaScript::finalize() {
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delete_main_loop();
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if (audio_driver_javascript) {
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memdelete(audio_driver_javascript);
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audio_driver_javascript = nullptr;
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}
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}
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// Miscellaneous
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Error OS_JavaScript::execute(const String &p_path, const List<String> &p_arguments, bool p_blocking, ProcessID *r_child_id, String *r_pipe, int *r_exitcode, bool read_stderr, Mutex *p_pipe_mutex) {
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Array args;
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for (const List<String>::Element *E = p_arguments.front(); E; E = E->next()) {
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args.push_back(E->get());
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}
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String json_args = JSON::print(args);
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int failed = godot_js_os_execute(json_args.utf8().get_data());
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ERR_FAIL_COND_V_MSG(failed, ERR_UNAVAILABLE, "OS::execute() must be implemented in JavaScript via 'engine.setOnExecute' if required.");
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return OK;
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}
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Error OS_JavaScript::kill(const ProcessID &p_pid) {
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ERR_FAIL_V_MSG(ERR_UNAVAILABLE, "OS::kill() is not available on the HTML5 platform.");
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}
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int OS_JavaScript::get_process_id() const {
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ERR_FAIL_V_MSG(0, "OS::get_process_id() is not available on the HTML5 platform.");
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}
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bool OS_JavaScript::_check_internal_feature_support(const String &p_feature) {
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if (p_feature == "HTML5" || p_feature == "web")
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return true;
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#ifdef JAVASCRIPT_EVAL_ENABLED
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if (p_feature == "JavaScript")
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return true;
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#endif
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return false;
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}
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String OS_JavaScript::get_executable_path() const {
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return OS::get_executable_path();
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}
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Error OS_JavaScript::shell_open(String p_uri) {
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// Open URI in a new tab, browser will deal with it by protocol.
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godot_js_os_shell_open(p_uri.utf8().get_data());
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return OK;
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}
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String OS_JavaScript::get_name() const {
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return "HTML5";
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}
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String OS_JavaScript::get_user_data_dir() const {
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return "/userfs";
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};
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String OS_JavaScript::get_cache_path() const {
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return "/home/web_user/.cache";
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}
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String OS_JavaScript::get_config_path() const {
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return "/home/web_user/.config";
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}
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String OS_JavaScript::get_data_path() const {
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return "/home/web_user/.local/share";
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}
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void OS_JavaScript::file_access_close_callback(const String &p_file, int p_flags) {
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OS_JavaScript *os = OS_JavaScript::get_singleton();
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if (!(os->is_userfs_persistent() && (p_flags & FileAccess::WRITE))) {
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return; // FS persistence is not working or we are not writing.
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}
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bool is_file_persistent = p_file.begins_with("/userfs");
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#ifdef TOOLS_ENABLED
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// Hack for editor persistence (can we track).
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is_file_persistent = is_file_persistent || p_file.begins_with("/home/web_user/");
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#endif
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if (is_file_persistent) {
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os->idb_needs_sync = true;
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}
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}
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bool OS_JavaScript::is_userfs_persistent() const {
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return idb_available;
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}
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OS_JavaScript *OS_JavaScript::get_singleton() {
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return static_cast<OS_JavaScript *>(OS::get_singleton());
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}
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void OS_JavaScript::initialize_joypads() {
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}
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OS_JavaScript::OS_JavaScript() {
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char locale_ptr[16];
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godot_js_config_locale_get(locale_ptr, 16);
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setenv("LANG", locale_ptr, true);
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if (AudioDriverJavaScript::is_available()) {
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audio_driver_javascript = memnew(AudioDriverJavaScript);
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AudioDriverManager::add_driver(audio_driver_javascript);
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}
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idb_available = godot_js_os_fs_is_persistent();
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Vector<Logger *> loggers;
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loggers.push_back(memnew(StdLogger));
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_set_logger(memnew(CompositeLogger(loggers)));
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FileAccessUnix::close_notification_func = file_access_close_callback;
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}
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