2014-02-10 02:10:30 +01:00
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/*************************************************************************/
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/* javascript_main.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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2017-08-27 14:16:55 +02:00
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/* https://godotengine.org */
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2014-02-10 02:10:30 +01:00
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/*************************************************************************/
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2020-01-01 11:16:22 +01:00
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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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2014-02-10 02:10:30 +01:00
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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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2018-01-05 00:50:27 +01:00
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2018-09-11 18:13:45 +02:00
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#include "core/io/resource_loader.h"
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2017-03-05 16:44:50 +01:00
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#include "main/main.h"
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2020-06-29 21:00:20 +02:00
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#include "platform/javascript/os_javascript.h"
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2015-09-10 05:10:54 +02:00
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2018-07-08 02:23:19 +02:00
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#include <emscripten/emscripten.h>
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2020-07-15 22:11:08 +02:00
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#include <stdlib.h>
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2014-02-10 02:10:30 +01:00
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2020-01-19 11:44:19 +01:00
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static OS_JavaScript *os = NULL;
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2020-06-29 21:00:20 +02:00
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static uint64_t target_ticks = 0;
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2020-01-19 11:44:19 +01:00
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// Files drop (implemented in JS for now).
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extern "C" EMSCRIPTEN_KEEPALIVE void _drop_files_callback(char *p_filev[], int p_filec) {
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if (!os || !os->get_main_loop()) {
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ERR_FAIL_MSG("Unable to drop files because the OS or MainLoop are not active");
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}
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Vector<String> files;
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for (int i = 0; i < p_filec; i++) {
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files.push_back(String::utf8(p_filev[i]));
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}
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os->get_main_loop()->drop_files(files);
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}
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2020-07-28 07:39:26 +02:00
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extern "C" EMSCRIPTEN_KEEPALIVE void _request_quit_callback(char *p_filev[], int p_filec) {
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if (os && os->get_main_loop()) {
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os->get_main_loop()->notification(MainLoop::NOTIFICATION_WM_QUIT_REQUEST);
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}
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}
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2020-01-19 11:44:19 +01:00
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void exit_callback() {
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emscripten_cancel_main_loop(); // After this, we can exit!
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Main::cleanup();
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int exit_code = OS_JavaScript::get_singleton()->get_exit_code();
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memdelete(os);
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os = NULL;
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emscripten_force_exit(exit_code); // No matter that we call cancel_main_loop, regular "exit" will not work, forcing.
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}
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void main_loop_callback() {
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2020-06-29 21:00:20 +02:00
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uint64_t current_ticks = os->get_ticks_usec();
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2020-01-19 11:44:19 +01:00
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2020-06-29 18:54:20 +02:00
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bool force_draw = os->check_size_force_redraw();
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if (force_draw) {
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Main::force_redraw();
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2020-06-29 21:00:20 +02:00
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} else if (current_ticks < target_ticks && !force_draw) {
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return; // Skip frame.
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}
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int target_fps = Engine::get_singleton()->get_target_fps();
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if (target_fps > 0) {
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target_ticks += (uint64_t)(1000000 / target_fps);
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2020-06-29 18:54:20 +02:00
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}
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2020-01-19 11:44:19 +01:00
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if (os->main_loop_iterate()) {
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emscripten_cancel_main_loop(); // Cancel current loop and wait for finalize_async.
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2020-06-29 18:51:53 +02:00
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/* clang-format off */
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2020-01-19 11:44:19 +01:00
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EM_ASM({
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// This will contain the list of operations that need to complete before cleanup.
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2020-06-29 18:51:53 +02:00
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Module.async_finish = [
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// Always contains at least one async promise, to avoid firing immediately if nothing is added.
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new Promise(function(accept, reject) {
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setTimeout(accept, 0);
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})
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];
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2020-01-19 11:44:19 +01:00
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});
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2020-06-29 18:51:53 +02:00
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/* clang-format on */
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2020-01-19 11:44:19 +01:00
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os->get_main_loop()->finish();
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os->finalize_async(); // Will add all the async finish functions.
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EM_ASM({
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Promise.all(Module.async_finish).then(function() {
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Module.async_finish = [];
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ccall("cleanup_after_sync", null, []);
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});
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});
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}
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}
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extern "C" EMSCRIPTEN_KEEPALIVE void cleanup_after_sync() {
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emscripten_set_main_loop(exit_callback, -1, false);
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}
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2018-03-21 15:51:44 +01:00
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extern "C" EMSCRIPTEN_KEEPALIVE void main_after_fs_sync(char *p_idbfs_err) {
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2020-01-19 11:44:19 +01:00
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// Set IDBFS status
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2017-10-02 16:09:24 +02:00
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String idbfs_err = String::utf8(p_idbfs_err);
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if (!idbfs_err.empty()) {
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print_line("IndexedDB not available: " + idbfs_err);
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}
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2018-07-08 02:23:19 +02:00
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os->set_idb_available(idbfs_err.empty());
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2020-01-19 11:44:19 +01:00
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// Set canvas ID
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char canvas_ptr[256];
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/* clang-format off */
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EM_ASM({
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stringToUTF8("#" + Module['canvas'].id, $0, 255);
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}, canvas_ptr);
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/* clang-format on */
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os->canvas_id.parse_utf8(canvas_ptr, 255);
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// Set locale
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char locale_ptr[16];
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/* clang-format off */
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EM_ASM({
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stringToUTF8(Module['locale'], $0, 16);
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}, locale_ptr);
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/* clang-format on */
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setenv("LANG", locale_ptr, true);
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2020-06-14 15:14:38 +02:00
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Main::setup2();
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2018-07-08 02:23:19 +02:00
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// Ease up compatibility.
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2017-04-27 15:34:46 +02:00
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ResourceLoader::set_abort_on_missing_resources(false);
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Main::start();
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2020-01-19 11:44:19 +01:00
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os->get_main_loop()->init();
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2020-07-28 07:39:26 +02:00
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// Expose method for requesting quit.
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EM_ASM({
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Module['request_quit'] = function() {
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ccall("_request_quit_callback", null, []);
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};
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});
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2020-06-29 21:00:20 +02:00
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// Immediately run the first iteration.
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// We are inside an animation frame, we want to immediately draw on the newly setup canvas.
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2020-01-19 11:44:19 +01:00
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main_loop_callback();
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emscripten_resume_main_loop();
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2015-09-12 15:54:47 +02:00
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}
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2014-02-10 02:10:30 +01:00
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int main(int argc, char *argv[]) {
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2020-07-01 15:40:30 +02:00
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// Create and mount userfs immediately.
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EM_ASM({
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FS.mkdir('/userfs');
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FS.mount(IDBFS, {}, '/userfs');
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});
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2020-01-19 11:44:19 +01:00
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os = new OS_JavaScript(argc, argv);
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2020-06-14 15:14:38 +02:00
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Main::setup(argv[0], argc - 1, &argv[1], false);
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2020-01-19 11:44:19 +01:00
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emscripten_set_main_loop(main_loop_callback, -1, false);
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emscripten_pause_main_loop(); // Will need to wait for FS sync.
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2020-06-14 15:14:38 +02:00
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2018-07-08 02:23:19 +02:00
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// Sync from persistent state into memory and then
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// run the 'main_after_fs_sync' function.
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2017-01-15 20:00:04 +01:00
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/* clang-format off */
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2020-06-14 15:14:38 +02:00
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EM_ASM({
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2017-01-12 14:14:40 +01:00
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FS.syncfs(true, function(err) {
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2020-06-14 15:14:38 +02:00
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requestAnimationFrame(function() {
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ccall('main_after_fs_sync', null, ['string'], [err ? err.message : ""]);
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});
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2017-01-12 14:14:40 +01:00
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});
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2020-06-14 15:14:38 +02:00
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});
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2017-01-15 20:00:04 +01:00
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/* clang-format on */
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2014-02-10 02:10:30 +01:00
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return 0;
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2018-07-08 02:23:19 +02:00
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// Continued async in main_after_fs_sync() from the syncfs() callback.
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2014-02-10 02:10:30 +01:00
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}
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