527 lines
17 KiB
JavaScript
527 lines
17 KiB
JavaScript
/*************************************************************************/
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/* library_godot_input.js */
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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) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 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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/*
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* Gamepad API helper.
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*/
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const GodotInputGamepads = {
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$GodotInputGamepads__deps: ['$GodotRuntime', '$GodotEventListeners'],
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$GodotInputGamepads: {
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samples: [],
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get_pads: function () {
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try {
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// Will throw in iframe when permission is denied.
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// Will throw/warn in the future for insecure contexts.
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// See https://github.com/w3c/gamepad/pull/120
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const pads = navigator.getGamepads();
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if (pads) {
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return pads;
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}
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return [];
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} catch (e) {
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return [];
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}
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},
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get_samples: function () {
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return GodotInputGamepads.samples;
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},
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get_sample: function (index) {
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const samples = GodotInputGamepads.samples;
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return index < samples.length ? samples[index] : null;
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},
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sample: function () {
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const pads = GodotInputGamepads.get_pads();
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const samples = [];
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for (let i = 0; i < pads.length; i++) {
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const pad = pads[i];
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if (!pad) {
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samples.push(null);
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continue;
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}
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const s = {
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standard: pad.mapping === 'standard',
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buttons: [],
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axes: [],
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connected: pad.connected,
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};
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for (let b = 0; b < pad.buttons.length; b++) {
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s.buttons.push(pad.buttons[b].value);
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}
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for (let a = 0; a < pad.axes.length; a++) {
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s.axes.push(pad.axes[a]);
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}
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samples.push(s);
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}
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GodotInputGamepads.samples = samples;
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},
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init: function (onchange) {
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GodotEventListeners.samples = [];
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function add(pad) {
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const guid = GodotInputGamepads.get_guid(pad);
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const c_id = GodotRuntime.allocString(pad.id);
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const c_guid = GodotRuntime.allocString(guid);
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onchange(pad.index, 1, c_id, c_guid);
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GodotRuntime.free(c_id);
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GodotRuntime.free(c_guid);
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}
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const pads = GodotInputGamepads.get_pads();
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for (let i = 0; i < pads.length; i++) {
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// Might be reserved space.
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if (pads[i]) {
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add(pads[i]);
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}
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}
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GodotEventListeners.add(window, 'gamepadconnected', function (evt) {
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add(evt.gamepad);
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}, false);
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GodotEventListeners.add(window, 'gamepaddisconnected', function (evt) {
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onchange(evt.gamepad.index, 0);
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}, false);
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},
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get_guid: function (pad) {
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if (pad.mapping) {
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return pad.mapping;
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}
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const ua = navigator.userAgent;
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let os = 'Unknown';
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if (ua.indexOf('Android') >= 0) {
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os = 'Android';
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} else if (ua.indexOf('Linux') >= 0) {
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os = 'Linux';
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} else if (ua.indexOf('iPhone') >= 0) {
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os = 'iOS';
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} else if (ua.indexOf('Macintosh') >= 0) {
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// Updated iPads will fall into this category.
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os = 'MacOSX';
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} else if (ua.indexOf('Windows') >= 0) {
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os = 'Windows';
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}
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const id = pad.id;
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// Chrom* style: NAME (Vendor: xxxx Product: xxxx)
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const exp1 = /vendor: ([0-9a-f]{4}) product: ([0-9a-f]{4})/i;
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// Firefox/Safari style (safari may remove leading zeores)
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const exp2 = /^([0-9a-f]+)-([0-9a-f]+)-/i;
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let vendor = '';
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let product = '';
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if (exp1.test(id)) {
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const match = exp1.exec(id);
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vendor = match[1].padStart(4, '0');
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product = match[2].padStart(4, '0');
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} else if (exp2.test(id)) {
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const match = exp2.exec(id);
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vendor = match[1].padStart(4, '0');
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product = match[2].padStart(4, '0');
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}
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if (!vendor || !product) {
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return `${os}Unknown`;
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}
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return os + vendor + product;
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},
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},
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};
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mergeInto(LibraryManager.library, GodotInputGamepads);
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/*
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* Drag and drop helper.
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* This is pretty big, but basically detect dropped files on GodotConfig.canvas,
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* process them one by one (recursively for directories), and copies them to
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* the temporary FS path '/tmp/drop-[random]/' so it can be emitted as a godot
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* event (that requires a string array of paths).
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*
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* NOTE: The temporary files are removed after the callback. This means that
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* deferred callbacks won't be able to access the files.
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*/
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const GodotInputDragDrop = {
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$GodotInputDragDrop__deps: ['$FS', '$GodotFS'],
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$GodotInputDragDrop: {
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promises: [],
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pending_files: [],
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add_entry: function (entry) {
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if (entry.isDirectory) {
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GodotInputDragDrop.add_dir(entry);
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} else if (entry.isFile) {
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GodotInputDragDrop.add_file(entry);
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} else {
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GodotRuntime.error('Unrecognized entry...', entry);
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}
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},
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add_dir: function (entry) {
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GodotInputDragDrop.promises.push(new Promise(function (resolve, reject) {
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const reader = entry.createReader();
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reader.readEntries(function (entries) {
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for (let i = 0; i < entries.length; i++) {
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GodotInputDragDrop.add_entry(entries[i]);
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}
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resolve();
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});
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}));
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},
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add_file: function (entry) {
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GodotInputDragDrop.promises.push(new Promise(function (resolve, reject) {
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entry.file(function (file) {
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const reader = new FileReader();
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reader.onload = function () {
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const f = {
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'path': file.relativePath || file.webkitRelativePath,
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'name': file.name,
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'type': file.type,
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'size': file.size,
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'data': reader.result,
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};
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if (!f['path']) {
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f['path'] = f['name'];
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}
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GodotInputDragDrop.pending_files.push(f);
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resolve();
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};
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reader.onerror = function () {
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GodotRuntime.print('Error reading file');
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reject();
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};
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reader.readAsArrayBuffer(file);
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}, function (err) {
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GodotRuntime.print('Error!');
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reject();
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});
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}));
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},
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process: function (resolve, reject) {
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if (GodotInputDragDrop.promises.length === 0) {
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resolve();
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return;
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}
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GodotInputDragDrop.promises.pop().then(function () {
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setTimeout(function () {
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GodotInputDragDrop.process(resolve, reject);
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}, 0);
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});
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},
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_process_event: function (ev, callback) {
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ev.preventDefault();
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if (ev.dataTransfer.items) {
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// Use DataTransferItemList interface to access the file(s)
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for (let i = 0; i < ev.dataTransfer.items.length; i++) {
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const item = ev.dataTransfer.items[i];
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let entry = null;
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if ('getAsEntry' in item) {
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entry = item.getAsEntry();
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} else if ('webkitGetAsEntry' in item) {
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entry = item.webkitGetAsEntry();
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}
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if (entry) {
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GodotInputDragDrop.add_entry(entry);
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}
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}
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} else {
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GodotRuntime.error('File upload not supported');
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}
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new Promise(GodotInputDragDrop.process).then(function () {
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const DROP = `/tmp/drop-${parseInt(Math.random() * (1 << 30), 10)}/`;
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const drops = [];
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const files = [];
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FS.mkdir(DROP);
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GodotInputDragDrop.pending_files.forEach((elem) => {
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const path = elem['path'];
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GodotFS.copy_to_fs(DROP + path, elem['data']);
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let idx = path.indexOf('/');
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if (idx === -1) {
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// Root file
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drops.push(DROP + path);
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} else {
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// Subdir
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const sub = path.substr(0, idx);
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idx = sub.indexOf('/');
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if (idx < 0 && drops.indexOf(DROP + sub) === -1) {
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drops.push(DROP + sub);
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}
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}
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files.push(DROP + path);
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});
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GodotInputDragDrop.promises = [];
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GodotInputDragDrop.pending_files = [];
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callback(drops);
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if (GodotConfig.persistent_drops) {
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// Delay removal at exit.
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GodotOS.atexit(function (resolve, reject) {
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GodotInputDragDrop.remove_drop(files, DROP);
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resolve();
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});
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} else {
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GodotInputDragDrop.remove_drop(files, DROP);
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}
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});
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},
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remove_drop: function (files, drop_path) {
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const dirs = [drop_path.substr(0, drop_path.length - 1)];
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// Remove temporary files
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files.forEach(function (file) {
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FS.unlink(file);
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let dir = file.replace(drop_path, '');
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let idx = dir.lastIndexOf('/');
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while (idx > 0) {
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dir = dir.substr(0, idx);
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if (dirs.indexOf(drop_path + dir) === -1) {
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dirs.push(drop_path + dir);
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}
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idx = dir.lastIndexOf('/');
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}
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});
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// Remove dirs.
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dirs.sort(function (a, b) {
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const al = (a.match(/\//g) || []).length;
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const bl = (b.match(/\//g) || []).length;
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if (al > bl) {
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return -1;
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} else if (al < bl) {
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return 1;
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}
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return 0;
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}).forEach(function (dir) {
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FS.rmdir(dir);
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});
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},
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handler: function (callback) {
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return function (ev) {
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GodotInputDragDrop._process_event(ev, callback);
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};
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},
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},
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};
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mergeInto(LibraryManager.library, GodotInputDragDrop);
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/*
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* Godot exposed input functions.
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*/
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const GodotInput = {
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$GodotInput__deps: ['$GodotRuntime', '$GodotConfig', '$GodotEventListeners', '$GodotInputGamepads', '$GodotInputDragDrop'],
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$GodotInput: {
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getModifiers: function (evt) {
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return (evt.shiftKey + 0) + ((evt.altKey + 0) << 1) + ((evt.ctrlKey + 0) << 2) + ((evt.metaKey + 0) << 3);
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},
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computePosition: function (evt, rect) {
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const canvas = GodotConfig.canvas;
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const rw = canvas.width / rect.width;
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const rh = canvas.height / rect.height;
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const x = (evt.clientX - rect.x) * rw;
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const y = (evt.clientY - rect.y) * rh;
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return [x, y];
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},
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},
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/*
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* Mouse API
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*/
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godot_js_input_mouse_move_cb__sig: 'vi',
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godot_js_input_mouse_move_cb: function (callback) {
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const func = GodotRuntime.get_func(callback);
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const canvas = GodotConfig.canvas;
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function move_cb(evt) {
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const rect = canvas.getBoundingClientRect();
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const pos = GodotInput.computePosition(evt, rect);
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// Scale movement
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const rw = canvas.width / rect.width;
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const rh = canvas.height / rect.height;
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const rel_pos_x = evt.movementX * rw;
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const rel_pos_y = evt.movementY * rh;
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const modifiers = GodotInput.getModifiers(evt);
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func(pos[0], pos[1], rel_pos_x, rel_pos_y, modifiers);
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}
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GodotEventListeners.add(window, 'mousemove', move_cb, false);
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},
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godot_js_input_mouse_wheel_cb__sig: 'vi',
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godot_js_input_mouse_wheel_cb: function (callback) {
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const func = GodotRuntime.get_func(callback);
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function wheel_cb(evt) {
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if (func(evt['deltaX'] || 0, evt['deltaY'] || 0)) {
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evt.preventDefault();
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}
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}
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GodotEventListeners.add(GodotConfig.canvas, 'wheel', wheel_cb, false);
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},
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godot_js_input_mouse_button_cb__sig: 'vi',
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godot_js_input_mouse_button_cb: function (callback) {
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const func = GodotRuntime.get_func(callback);
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const canvas = GodotConfig.canvas;
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function button_cb(p_pressed, evt) {
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const rect = canvas.getBoundingClientRect();
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const pos = GodotInput.computePosition(evt, rect);
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const modifiers = GodotInput.getModifiers(evt);
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if (func(p_pressed, evt.button, pos[0], pos[1], modifiers)) {
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evt.preventDefault();
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}
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}
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GodotEventListeners.add(canvas, 'mousedown', button_cb.bind(null, 1), false);
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GodotEventListeners.add(window, 'mouseup', button_cb.bind(null, 0), false);
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},
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/*
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* Touch API
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*/
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godot_js_input_touch_cb__sig: 'viii',
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godot_js_input_touch_cb: function (callback, ids, coords) {
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const func = GodotRuntime.get_func(callback);
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const canvas = GodotConfig.canvas;
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function touch_cb(type, evt) {
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const rect = canvas.getBoundingClientRect();
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const touches = evt.changedTouches;
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for (let i = 0; i < touches.length; i++) {
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const touch = touches[i];
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const pos = GodotInput.computePosition(touch, rect);
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GodotRuntime.setHeapValue(coords + (i * 2), pos[0], 'double');
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GodotRuntime.setHeapValue(coords + (i * 2 + 8), pos[1], 'double');
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GodotRuntime.setHeapValue(ids + i, touch.identifier, 'i32');
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}
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func(type, touches.length);
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if (evt.cancelable) {
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evt.preventDefault();
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}
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}
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GodotEventListeners.add(canvas, 'touchstart', touch_cb.bind(null, 0), false);
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GodotEventListeners.add(canvas, 'touchend', touch_cb.bind(null, 1), false);
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GodotEventListeners.add(canvas, 'touchcancel', touch_cb.bind(null, 1), false);
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GodotEventListeners.add(canvas, 'touchmove', touch_cb.bind(null, 2), false);
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},
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/*
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* Key API
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*/
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godot_js_input_key_cb__sig: 'viii',
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godot_js_input_key_cb: function (callback, code, key) {
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const func = GodotRuntime.get_func(callback);
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function key_cb(pressed, evt) {
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const modifiers = GodotInput.getModifiers(evt);
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GodotRuntime.stringToHeap(evt.code, code, 32);
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GodotRuntime.stringToHeap(evt.key, key, 32);
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func(pressed, evt.repeat, modifiers);
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evt.preventDefault();
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}
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GodotEventListeners.add(GodotConfig.canvas, 'keydown', key_cb.bind(null, 1), false);
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GodotEventListeners.add(GodotConfig.canvas, 'keyup', key_cb.bind(null, 0), false);
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},
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/*
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* Gamepad API
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*/
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godot_js_input_gamepad_cb__sig: 'vi',
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godot_js_input_gamepad_cb: function (change_cb) {
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const onchange = GodotRuntime.get_func(change_cb);
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GodotInputGamepads.init(onchange);
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},
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godot_js_input_gamepad_sample_count__sig: 'i',
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godot_js_input_gamepad_sample_count: function () {
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return GodotInputGamepads.get_samples().length;
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},
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godot_js_input_gamepad_sample__sig: 'i',
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godot_js_input_gamepad_sample: function () {
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GodotInputGamepads.sample();
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return 0;
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},
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godot_js_input_gamepad_sample_get__sig: 'iiiiiii',
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godot_js_input_gamepad_sample_get: function (p_index, r_btns, r_btns_num, r_axes, r_axes_num, r_standard) {
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const sample = GodotInputGamepads.get_sample(p_index);
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if (!sample || !sample.connected) {
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return 1;
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}
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const btns = sample.buttons;
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const btns_len = btns.length < 16 ? btns.length : 16;
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for (let i = 0; i < btns_len; i++) {
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GodotRuntime.setHeapValue(r_btns + (i << 2), btns[i], 'float');
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}
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GodotRuntime.setHeapValue(r_btns_num, btns_len, 'i32');
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const axes = sample.axes;
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const axes_len = axes.length < 10 ? axes.length : 10;
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for (let i = 0; i < axes_len; i++) {
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GodotRuntime.setHeapValue(r_axes + (i << 2), axes[i], 'float');
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}
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GodotRuntime.setHeapValue(r_axes_num, axes_len, 'i32');
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const is_standard = sample.standard ? 1 : 0;
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GodotRuntime.setHeapValue(r_standard, is_standard, 'i32');
|
|
return 0;
|
|
},
|
|
|
|
/*
|
|
* Drag/Drop API
|
|
*/
|
|
godot_js_input_drop_files_cb__sig: 'vi',
|
|
godot_js_input_drop_files_cb: function (callback) {
|
|
const func = GodotRuntime.get_func(callback);
|
|
const dropFiles = function (files) {
|
|
const args = files || [];
|
|
if (!args.length) {
|
|
return;
|
|
}
|
|
const argc = args.length;
|
|
const argv = GodotRuntime.allocStringArray(args);
|
|
func(argv, argc);
|
|
GodotRuntime.freeStringArray(argv, argc);
|
|
};
|
|
const canvas = GodotConfig.canvas;
|
|
GodotEventListeners.add(canvas, 'dragover', function (ev) {
|
|
// Prevent default behavior (which would try to open the file(s))
|
|
ev.preventDefault();
|
|
}, false);
|
|
GodotEventListeners.add(canvas, 'drop', GodotInputDragDrop.handler(dropFiles));
|
|
},
|
|
|
|
/* Paste API */
|
|
godot_js_input_paste_cb__sig: 'vi',
|
|
godot_js_input_paste_cb: function (callback) {
|
|
const func = GodotRuntime.get_func(callback);
|
|
GodotEventListeners.add(window, 'paste', function (evt) {
|
|
const text = evt.clipboardData.getData('text');
|
|
const ptr = GodotRuntime.allocString(text);
|
|
func(ptr);
|
|
GodotRuntime.free(ptr);
|
|
}, false);
|
|
},
|
|
};
|
|
|
|
autoAddDeps(GodotInput, '$GodotInput');
|
|
mergeInto(LibraryManager.library, GodotInput);
|