colyseus.js
Version:
Colyseus Multiplayer SDK for JavaScript/TypeScript
319 lines • 38.4 kB
JavaScript
;
/**
* Copyright (c) 2014 Ion Drive Software Ltd.
* https://github.com/darrachequesne/notepack/
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
Object.defineProperty(exports, "__esModule", { value: true });
function utf8Write(view, offset, str) {
var c = 0;
for (var i = 0, l = str.length; i < l; i++) {
c = str.charCodeAt(i);
if (c < 0x80) {
view.setUint8(offset++, c);
}
else if (c < 0x800) {
view.setUint8(offset++, 0xc0 | (c >> 6));
view.setUint8(offset++, 0x80 | (c & 0x3f));
}
else if (c < 0xd800 || c >= 0xe000) {
view.setUint8(offset++, 0xe0 | (c >> 12));
view.setUint8(offset++, 0x80 | (c >> 6) & 0x3f);
view.setUint8(offset++, 0x80 | (c & 0x3f));
}
else {
i++;
c = 0x10000 + (((c & 0x3ff) << 10) | (str.charCodeAt(i) & 0x3ff));
view.setUint8(offset++, 0xf0 | (c >> 18));
view.setUint8(offset++, 0x80 | (c >> 12) & 0x3f);
view.setUint8(offset++, 0x80 | (c >> 6) & 0x3f);
view.setUint8(offset++, 0x80 | (c & 0x3f));
}
}
}
function utf8Length(str) {
var c = 0, length = 0;
for (var i = 0, l = str.length; i < l; i++) {
c = str.charCodeAt(i);
if (c < 0x80) {
length += 1;
}
else if (c < 0x800) {
length += 2;
}
else if (c < 0xd800 || c >= 0xe000) {
length += 3;
}
else {
i++;
length += 4;
}
}
return length;
}
function _encode(bytes, defers, value) {
var type = typeof value, i = 0, l = 0, hi = 0, lo = 0, length = 0, size = 0;
if (type === 'string') {
length = utf8Length(value);
// fixstr
if (length < 0x20) {
bytes.push(length | 0xa0);
size = 1;
}
// str 8
else if (length < 0x100) {
bytes.push(0xd9, length);
size = 2;
}
// str 16
else if (length < 0x10000) {
bytes.push(0xda, length >> 8, length);
size = 3;
}
// str 32
else if (length < 0x100000000) {
bytes.push(0xdb, length >> 24, length >> 16, length >> 8, length);
size = 5;
}
else {
throw new Error('String too long');
}
defers.push({ _str: value, _length: length, _offset: bytes.length });
return size + length;
}
if (type === 'number') {
// TODO: encode to float 32?
// float 64
if (Math.floor(value) !== value || !isFinite(value)) {
bytes.push(0xcb);
defers.push({ _float: value, _length: 8, _offset: bytes.length });
return 9;
}
if (value >= 0) {
// positive fixnum
if (value < 0x80) {
bytes.push(value);
return 1;
}
// uint 8
if (value < 0x100) {
bytes.push(0xcc, value);
return 2;
}
// uint 16
if (value < 0x10000) {
bytes.push(0xcd, value >> 8, value);
return 3;
}
// uint 32
if (value < 0x100000000) {
bytes.push(0xce, value >> 24, value >> 16, value >> 8, value);
return 5;
}
// uint 64
hi = (value / Math.pow(2, 32)) >> 0;
lo = value >>> 0;
bytes.push(0xcf, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);
return 9;
}
else {
// negative fixnum
if (value >= -0x20) {
bytes.push(value);
return 1;
}
// int 8
if (value >= -0x80) {
bytes.push(0xd0, value);
return 2;
}
// int 16
if (value >= -0x8000) {
bytes.push(0xd1, value >> 8, value);
return 3;
}
// int 32
if (value >= -0x80000000) {
bytes.push(0xd2, value >> 24, value >> 16, value >> 8, value);
return 5;
}
// int 64
hi = Math.floor(value / Math.pow(2, 32));
lo = value >>> 0;
bytes.push(0xd3, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);
return 9;
}
}
if (type === 'object') {
// nil
if (value === null) {
bytes.push(0xc0);
return 1;
}
if (Array.isArray(value)) {
length = value.length;
// fixarray
if (length < 0x10) {
bytes.push(length | 0x90);
size = 1;
}
// array 16
else if (length < 0x10000) {
bytes.push(0xdc, length >> 8, length);
size = 3;
}
// array 32
else if (length < 0x100000000) {
bytes.push(0xdd, length >> 24, length >> 16, length >> 8, length);
size = 5;
}
else {
throw new Error('Array too large');
}
for (i = 0; i < length; i++) {
size += _encode(bytes, defers, value[i]);
}
return size;
}
// fixext 8 / Date
if (value instanceof Date) {
var time = value.getTime();
hi = Math.floor(time / Math.pow(2, 32));
lo = time >>> 0;
bytes.push(0xd7, 0, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);
return 10;
}
if (value instanceof ArrayBuffer) {
length = value.byteLength;
// bin 8
if (length < 0x100) {
bytes.push(0xc4, length);
size = 2;
}
else
// bin 16
if (length < 0x10000) {
bytes.push(0xc5, length >> 8, length);
size = 3;
}
else
// bin 32
if (length < 0x100000000) {
bytes.push(0xc6, length >> 24, length >> 16, length >> 8, length);
size = 5;
}
else {
throw new Error('Buffer too large');
}
defers.push({ _bin: value, _length: length, _offset: bytes.length });
return size + length;
}
if (typeof value.toJSON === 'function') {
return _encode(bytes, defers, value.toJSON());
}
var keys = [], key = '';
var allKeys = Object.keys(value);
for (i = 0, l = allKeys.length; i < l; i++) {
key = allKeys[i];
if (typeof value[key] !== 'function') {
keys.push(key);
}
}
length = keys.length;
// fixmap
if (length < 0x10) {
bytes.push(length | 0x80);
size = 1;
}
// map 16
else if (length < 0x10000) {
bytes.push(0xde, length >> 8, length);
size = 3;
}
// map 32
else if (length < 0x100000000) {
bytes.push(0xdf, length >> 24, length >> 16, length >> 8, length);
size = 5;
}
else {
throw new Error('Object too large');
}
for (i = 0; i < length; i++) {
key = keys[i];
size += _encode(bytes, defers, key);
size += _encode(bytes, defers, value[key]);
}
return size;
}
// false/true
if (type === 'boolean') {
bytes.push(value ? 0xc3 : 0xc2);
return 1;
}
// fixext 1 / undefined
if (type === 'undefined') {
bytes.push(0xd4, 0, 0);
return 3;
}
throw new Error('Could not encode');
}
function encode(value) {
var bytes = [];
var defers = [];
var size = _encode(bytes, defers, value);
var buf = new ArrayBuffer(size);
var view = new DataView(buf);
var deferIndex = 0;
var deferWritten = 0;
var nextOffset = -1;
if (defers.length > 0) {
nextOffset = defers[0]._offset;
}
var defer, deferLength = 0, offset = 0;
for (var i = 0, l = bytes.length; i < l; i++) {
view.setUint8(deferWritten + i, bytes[i]);
if (i + 1 !== nextOffset) {
continue;
}
defer = defers[deferIndex];
deferLength = defer._length;
offset = deferWritten + nextOffset;
if (defer._bin) {
var bin = new Uint8Array(defer._bin);
for (var j = 0; j < deferLength; j++) {
view.setUint8(offset + j, bin[j]);
}
}
else if (defer._str) {
utf8Write(view, offset, defer._str);
}
else if (defer._float !== undefined) {
view.setFloat64(offset, defer._float);
}
deferIndex++;
deferWritten += deferLength;
if (defers[deferIndex]) {
nextOffset = defers[deferIndex]._offset;
}
}
return buf;
}
exports.default = encode;
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* Copyright (c) 2014 Ion Drive Software Ltd.\n * https://github.com/darrachequesne/notepack/\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in all\n * copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n * SOFTWARE.\n */\n\nfunction utf8Write(view, offset, str) {\n    var c = 0;\n    for (var i = 0, l = str.length; i < l; i++) {\n        c = str.charCodeAt(i);\n        if (c < 0x80) {\n            view.setUint8(offset++, c);\n        }\n        else if (c < 0x800) {\n            view.setUint8(offset++, 0xc0 | (c >> 6));\n            view.setUint8(offset++, 0x80 | (c & 0x3f));\n        }\n        else if (c < 0xd800 || c >= 0xe000) {\n            view.setUint8(offset++, 0xe0 | (c >> 12));\n            view.setUint8(offset++, 0x80 | (c >> 6) & 0x3f);\n            view.setUint8(offset++, 0x80 | (c & 0x3f));\n        }\n        else {\n            i++;\n            c = 0x10000 + (((c & 0x3ff) << 10) | (str.charCodeAt(i) & 0x3ff));\n            view.setUint8(offset++, 0xf0 | (c >> 18));\n            view.setUint8(offset++, 0x80 | (c >> 12) & 0x3f);\n            view.setUint8(offset++, 0x80 | (c >> 6) & 0x3f);\n            view.setUint8(offset++, 0x80 | (c & 0x3f));\n        }\n    }\n}\n\nfunction utf8Length(str) {\n    var c = 0, length = 0;\n    for (var i = 0, l = str.length; i < l; i++) {\n        c = str.charCodeAt(i);\n        if (c < 0x80) {\n            length += 1;\n        }\n        else if (c < 0x800) {\n            length += 2;\n        }\n        else if (c < 0xd800 || c >= 0xe000) {\n            length += 3;\n        }\n        else {\n            i++;\n            length += 4;\n        }\n    }\n    return length;\n}\n\nfunction _encode(bytes, defers, value) {\n    var type = typeof value, i = 0, l = 0, hi = 0, lo = 0, length = 0, size = 0;\n\n    if (type === 'string') {\n        length = utf8Length(value);\n\n        // fixstr\n        if (length < 0x20) {\n            bytes.push(length | 0xa0);\n            size = 1;\n        }\n        // str 8\n        else if (length < 0x100) {\n            bytes.push(0xd9, length);\n            size = 2;\n        }\n        // str 16\n        else if (length < 0x10000) {\n            bytes.push(0xda, length >> 8, length);\n            size = 3;\n        }\n        // str 32\n        else if (length < 0x100000000) {\n            bytes.push(0xdb, length >> 24, length >> 16, length >> 8, length);\n            size = 5;\n        } else {\n            throw new Error('String too long');\n        }\n        defers.push({ _str: value, _length: length, _offset: bytes.length });\n        return size + length;\n    }\n    if (type === 'number') {\n        // TODO: encode to float 32?\n\n        // float 64\n        if (Math.floor(value) !== value || !isFinite(value)) {\n            bytes.push(0xcb);\n            defers.push({ _float: value, _length: 8, _offset: bytes.length });\n            return 9;\n        }\n\n        if (value >= 0) {\n            // positive fixnum\n            if (value < 0x80) {\n                bytes.push(value);\n                return 1;\n            }\n            // uint 8\n            if (value < 0x100) {\n                bytes.push(0xcc, value);\n                return 2;\n            }\n            // uint 16\n            if (value < 0x10000) {\n                bytes.push(0xcd, value >> 8, value);\n                return 3;\n            }\n            // uint 32\n            if (value < 0x100000000) {\n                bytes.push(0xce, value >> 24, value >> 16, value >> 8, value);\n                return 5;\n            }\n            // uint 64\n            hi = (value / Math.pow(2, 32)) >> 0;\n            lo = value >>> 0;\n            bytes.push(0xcf, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n            return 9;\n        } else {\n            // negative fixnum\n            if (value >= -0x20) {\n                bytes.push(value);\n                return 1;\n            }\n            // int 8\n            if (value >= -0x80) {\n                bytes.push(0xd0, value);\n                return 2;\n            }\n            // int 16\n            if (value >= -0x8000) {\n                bytes.push(0xd1, value >> 8, value);\n                return 3;\n            }\n            // int 32\n            if (value >= -0x80000000) {\n                bytes.push(0xd2, value >> 24, value >> 16, value >> 8, value);\n                return 5;\n            }\n            // int 64\n            hi = Math.floor(value / Math.pow(2, 32));\n            lo = value >>> 0;\n            bytes.push(0xd3, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n            return 9;\n        }\n    }\n    if (type === 'object') {\n        // nil\n        if (value === null) {\n            bytes.push(0xc0);\n            return 1;\n        }\n\n        if (Array.isArray(value)) {\n            length = value.length;\n\n            // fixarray\n            if (length < 0x10) {\n                bytes.push(length | 0x90);\n                size = 1;\n            }\n            // array 16\n            else if (length < 0x10000) {\n                bytes.push(0xdc, length >> 8, length);\n                size = 3;\n            }\n            // array 32\n            else if (length < 0x100000000) {\n                bytes.push(0xdd, length >> 24, length >> 16, length >> 8, length);\n                size = 5;\n            } else {\n                throw new Error('Array too large');\n            }\n            for (i = 0; i < length; i++) {\n                size += _encode(bytes, defers, value[i]);\n            }\n            return size;\n        }\n\n        // fixext 8 / Date\n        if (value instanceof Date) {\n            var time = value.getTime();\n            hi = Math.floor(time / Math.pow(2, 32));\n            lo = time >>> 0;\n            bytes.push(0xd7, 0, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n            return 10;\n        }\n\n        if (value instanceof ArrayBuffer) {\n            length = value.byteLength;\n\n            // bin 8\n            if (length < 0x100) {\n                bytes.push(0xc4, length);\n                size = 2;\n            } else\n                // bin 16\n                if (length < 0x10000) {\n                    bytes.push(0xc5, length >> 8, length);\n                    size = 3;\n                } else\n                    // bin 32\n                    if (length < 0x100000000) {\n                        bytes.push(0xc6, length >> 24, length >> 16, length >> 8, length);\n                        size = 5;\n                    } else {\n                        throw new Error('Buffer too large');\n                    }\n            defers.push({ _bin: value, _length: length, _offset: bytes.length });\n            return size + length;\n        }\n\n        if (typeof value.toJSON === 'function') {\n            return _encode(bytes, defers, value.toJSON());\n        }\n\n        var keys = [], key = '';\n\n        var allKeys = Object.keys(value);\n        for (i = 0, l = allKeys.length; i < l; i++) {\n            key = allKeys[i];\n            if (typeof value[key] !== 'function') {\n                keys.push(key);\n            }\n        }\n        length = keys.length;\n\n        // fixmap\n        if (length < 0x10) {\n            bytes.push(length | 0x80);\n            size = 1;\n        }\n        // map 16\n        else if (length < 0x10000) {\n            bytes.push(0xde, length >> 8, length);\n            size = 3;\n        }\n        // map 32\n        else if (length < 0x100000000) {\n            bytes.push(0xdf, length >> 24, length >> 16, length >> 8, length);\n            size = 5;\n        } else {\n            throw new Error('Object too large');\n        }\n\n        for (i = 0; i < length; i++) {\n            key = keys[i];\n            size += _encode(bytes, defers, key);\n            size += _encode(bytes, defers, value[key]);\n        }\n        return size;\n    }\n    // false/true\n    if (type === 'boolean') {\n        bytes.push(value ? 0xc3 : 0xc2);\n        return 1;\n    }\n    // fixext 1 / undefined\n    if (type === 'undefined') {\n        bytes.push(0xd4, 0, 0);\n        return 3;\n    }\n    throw new Error('Could not encode');\n}\n\nfunction encode(value) {\n    var bytes = [];\n    var defers = [];\n    var size = _encode(bytes, defers, value);\n    var buf = new ArrayBuffer(size);\n    var view = new DataView(buf);\n\n    var deferIndex = 0;\n    var deferWritten = 0;\n    var nextOffset = -1;\n    if (defers.length > 0) {\n        nextOffset = defers[0]._offset;\n    }\n\n    var defer, deferLength = 0, offset = 0;\n    for (var i = 0, l = bytes.length; i < l; i++) {\n        view.setUint8(deferWritten + i, bytes[i]);\n        if (i + 1 !== nextOffset) { continue; }\n        defer = defers[deferIndex];\n        deferLength = defer._length;\n        offset = deferWritten + nextOffset;\n        if (defer._bin) {\n            var bin = new Uint8Array(defer._bin);\n            for (var j = 0; j < deferLength; j++) {\n                view.setUint8(offset + j, bin[j]);\n            }\n        } else if (defer._str) {\n            utf8Write(view, offset, defer._str);\n        } else if (defer._float !== undefined) {\n            view.setFloat64(offset, defer._float);\n        }\n        deferIndex++;\n        deferWritten += deferLength;\n        if (defers[deferIndex]) {\n            nextOffset = defers[deferIndex]._offset;\n        }\n    }\n    return buf;\n}\n\nexport default encode;\n"]}