├── .dockerignore
├── .gitattributes
├── .gitignore
├── Dockerfile
├── README.md
├── VARS.js
├── package-lock.json
├── package.json
├── server.js
├── tampermonkey script
    ├── content
    │   ├── UserGui.js
    │   ├── chessboard.css
    │   ├── chessboard.js
    │   ├── chesspieces
    │   │   ├── bB.svg
    │   │   ├── bK.svg
    │   │   ├── bN.svg
    │   │   ├── bP.svg
    │   │   ├── bQ.svg
    │   │   ├── bR.svg
    │   │   ├── wB.svg
    │   │   ├── wK.svg
    │   │   ├── wN.svg
    │   │   ├── wP.svg
    │   │   ├── wQ.svg
    │   │   └── wR.svg
    │   ├── jquery.js
    │   ├── lozza.js
    │   ├── stockfish-2018.js
    │   ├── stockfish-5.js
    │   └── stockfish-multi-thread
    │   │   ├── stockfish.js
    │   │   ├── stockfish.wasm
    │   │   └── stockfish.worker.js
    └── smart-chess.js
└── utils
    ├── engine.js
    ├── engine
        └── engine_path
    └── process.js


/.dockerignore:
--------------------------------------------------------------------------------
1 | node_modules
2 | tampermonkey script
3 | utils/engine/*
4 | */stockfish*


--------------------------------------------------------------------------------
/.gitattributes:
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1 | # Auto detect text files and perform LF normalization
2 | * text=auto
3 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | node_modules
2 | *.exe
3 | *.bin


--------------------------------------------------------------------------------
/Dockerfile:
--------------------------------------------------------------------------------
1 | FROM node:18
2 | WORKDIR /cas
3 | COPY package*.json ./
4 | RUN npm install
5 | COPY . .
6 | EXPOSE 5000
7 | CMD [ "npm start" ]


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # Smart Chess Bot: The Ultimate Chess Analysis System
 2 | 
 3 | ## Overview
 4 | 
 5 | Smart Chess Bot is an advanced chess analysis system designed to elevate your gameplay to new heights. Leveraging state-of-the-art algorithms and cutting-edge technology, our system provides unparalleled insights into chess positions, empowering players to make informed and strategic moves.
 6 | 
 7 | ## Features
 8 | 
 9 | - **Intelligent Analysis**: Our system employs sophisticated algorithms to analyze chess positions and recommend optimal moves.
10 | - **Multiple Chess Engines**: Choose from a selection of JavaScript UCI chess engines, including Lozza Engine, Stockfish 5 Engine, and Stockfish 2018 Engine, each offering varying speeds and maximum Elo ratings.
11 | - **Browser Compatibility**: Compatible with popular browsers such as Chrome, Firefox, Edge, and Opera, ensuring accessibility for players across platforms.
12 | - **User-friendly Interface**: Enjoy a seamless and intuitive user experience, making it easy to integrate our system into your chess strategy.
13 | 
14 | ## Getting Started
15 | 
16 | To start using Smart Chess Bot, follow these simple steps:
17 | 
18 | 1. **Installation**: Install the TamperMonkey extension for your browser from [here](https://www.tampermonkey.net/).
19 | 2. **TamperMonkey Script**: Add the TamperMonkey script available [here](https://greasyfork.org/en/scripts/460147-c-a-s-chess-assistance-system) to enable Smart Chess Bot functionality.
20 | 3. **Allow Pop-ups**: Ensure that pop-ups are allowed in your browser settings to enable the full functionality of the system.
21 | 4. **Optional: Node Server Setup**: To run the chess engine locally on your system, follow these steps:
22 | 
23 |    - **Install Node Modules**: Run `npm install` in your terminal to install the necessary dependencies.
24 | 
25 |    - **Download Stockfish Engine**: [Download](https://stockfishchess.org/download/)
26 | 
27 |    - **Stockfish Engine Path**: Place the Stockfish engine in the following path: `utils/engine`.
28 | 
29 |    - **TamperMonkey Script**: Set engine name in the script settings.
30 | 
31 |    - **Run Server Command**: npm start server.js
32 | 
33 | 
34 | ## Screenshots
35 | 
36 | ![Screenshot 1](https://user-images.githubusercontent.com/80095684/219965567-57ced9ff-5dbe-4b4d-969c-e6c42d83c5b8.png)
37 | ![Screenshot 2](https://user-images.githubusercontent.com/80095684/219965566-224f8acb-38d1-4ff8-9b29-e223c1361273.png)
38 | ![Screenshot 3](https://user-images.githubusercontent.com/80095684/219969063-498cb06b-f97c-4e68-a1cf-e8de3f1a677f.png)
39 | 


--------------------------------------------------------------------------------
/VARS.js:
--------------------------------------------------------------------------------
1 | const VARS={
2 |     PORT : 5000,
3 |     LICHESS_API : "https://lichess.org/api/cloud-eval",
4 |     DEPTH_MODE:0,
5 |     MOVETIME_MODE:1
6 | }
7 | 
8 | 
9 | module.exports={VARS}


--------------------------------------------------------------------------------
/package-lock.json:
--------------------------------------------------------------------------------
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1079 |       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
1080 |     },
1081 |     "node_modules/semver": {
1082 |       "version": "7.6.3",
1083 |       "resolved": "https://registry.npmjs.org/semver/-/semver-7.6.3.tgz",
1084 |       "integrity": "sha512-oVekP1cKtI+CTDvHWYFUcMtsK/00wmAEfyqKfNdARm8u1wNVhSgaX7A8d4UuIlUI5e84iEwOhs7ZPYRmzU9U6A==",
1085 |       "license": "ISC",
1086 |       "bin": {
1087 |         "semver": "bin/semver.js"
1088 |       },
1089 |       "engines": {
1090 |         "node": ">=10"
1091 |       }
1092 |     },
1093 |     "node_modules/send": {
1094 |       "version": "0.18.0",
1095 |       "resolved": "https://registry.npmjs.org/send/-/send-0.18.0.tgz",
1096 |       "integrity": "sha512-qqWzuOjSFOuqPjFe4NOsMLafToQQwBSOEpS+FwEt3A2V3vKubTquT3vmLTQpFgMXp8AlFWFuP1qKaJZOtPpVXg==",
1097 |       "dependencies": {
1098 |         "debug": "2.6.9",
1099 |         "depd": "2.0.0",
1100 |         "destroy": "1.2.0",
1101 |         "encodeurl": "~1.0.2",
1102 |         "escape-html": "~1.0.3",
1103 |         "etag": "~1.8.1",
1104 |         "fresh": "0.5.2",
1105 |         "http-errors": "2.0.0",
1106 |         "mime": "1.6.0",
1107 |         "ms": "2.1.3",
1108 |         "on-finished": "2.4.1",
1109 |         "range-parser": "~1.2.1",
1110 |         "statuses": "2.0.1"
1111 |       },
1112 |       "engines": {
1113 |         "node": ">= 0.8.0"
1114 |       }
1115 |     },
1116 |     "node_modules/send/node_modules/ms": {
1117 |       "version": "2.1.3",
1118 |       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
1119 |       "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
1120 |     },
1121 |     "node_modules/serve-static": {
1122 |       "version": "1.15.0",
1123 |       "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.15.0.tgz",
1124 |       "integrity": "sha512-XGuRDNjXUijsUL0vl6nSD7cwURuzEgglbOaFuZM9g3kwDXOWVTck0jLzjPzGD+TazWbboZYu52/9/XPdUgne9g==",
1125 |       "dependencies": {
1126 |         "encodeurl": "~1.0.2",
1127 |         "escape-html": "~1.0.3",
1128 |         "parseurl": "~1.3.3",
1129 |         "send": "0.18.0"
1130 |       },
1131 |       "engines": {
1132 |         "node": ">= 0.8.0"
1133 |       }
1134 |     },
1135 |     "node_modules/setprototypeof": {
1136 |       "version": "1.2.0",
1137 |       "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
1138 |       "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="
1139 |     },
1140 |     "node_modules/side-channel": {
1141 |       "version": "1.0.4",
1142 |       "resolved": "https://registry.npmjs.org/side-channel/-/side-channel-1.0.4.tgz",
1143 |       "integrity": "sha512-q5XPytqFEIKHkGdiMIrY10mvLRvnQh42/+GoBlFW3b2LXLE2xxJpZFdm94we0BaoV3RwJyGqg5wS7epxTv0Zvw==",
1144 |       "dependencies": {
1145 |         "call-bind": "^1.0.0",
1146 |         "get-intrinsic": "^1.0.2",
1147 |         "object-inspect": "^1.9.0"
1148 |       },
1149 |       "funding": {
1150 |         "url": "https://github.com/sponsors/ljharb"
1151 |       }
1152 |     },
1153 |     "node_modules/simple-update-notifier": {
1154 |       "version": "2.0.0",
1155 |       "resolved": "https://registry.npmjs.org/simple-update-notifier/-/simple-update-notifier-2.0.0.tgz",
1156 |       "integrity": "sha512-a2B9Y0KlNXl9u/vsW6sTIu9vGEpfKu2wRV6l1H3XEas/0gUIzGzBoP/IouTcUQbm9JWZLH3COxyn03TYlFax6w==",
1157 |       "license": "MIT",
1158 |       "dependencies": {
1159 |         "semver": "^7.5.3"
1160 |       },
1161 |       "engines": {
1162 |         "node": ">=10"
1163 |       }
1164 |     },
1165 |     "node_modules/sshpk": {
1166 |       "version": "1.17.0",
1167 |       "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.17.0.tgz",
1168 |       "integrity": "sha512-/9HIEs1ZXGhSPE8X6Ccm7Nam1z8KcoCqPdI7ecm1N33EzAetWahvQWVqLZtaZQ+IDKX4IyA2o0gBzqIMkAagHQ==",
1169 |       "dependencies": {
1170 |         "asn1": "~0.2.3",
1171 |         "assert-plus": "^1.0.0",
1172 |         "bcrypt-pbkdf": "^1.0.0",
1173 |         "dashdash": "^1.12.0",
1174 |         "ecc-jsbn": "~0.1.1",
1175 |         "getpass": "^0.1.1",
1176 |         "jsbn": "~0.1.0",
1177 |         "safer-buffer": "^2.0.2",
1178 |         "tweetnacl": "~0.14.0"
1179 |       },
1180 |       "bin": {
1181 |         "sshpk-conv": "bin/sshpk-conv",
1182 |         "sshpk-sign": "bin/sshpk-sign",
1183 |         "sshpk-verify": "bin/sshpk-verify"
1184 |       },
1185 |       "engines": {
1186 |         "node": ">=0.10.0"
1187 |       }
1188 |     },
1189 |     "node_modules/statuses": {
1190 |       "version": "2.0.1",
1191 |       "resolved": "https://registry.npmjs.org/statuses/-/statuses-2.0.1.tgz",
1192 |       "integrity": "sha512-RwNA9Z/7PrK06rYLIzFMlaF+l73iwpzsqRIFgbMLbTcLD6cOao82TaWefPXQvB2fOC4AjuYSEndS7N/mTCbkdQ==",
1193 |       "engines": {
1194 |         "node": ">= 0.8"
1195 |       }
1196 |     },
1197 |     "node_modules/supports-color": {
1198 |       "version": "5.5.0",
1199 |       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
1200 |       "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
1201 |       "license": "MIT",
1202 |       "dependencies": {
1203 |         "has-flag": "^3.0.0"
1204 |       },
1205 |       "engines": {
1206 |         "node": ">=4"
1207 |       }
1208 |     },
1209 |     "node_modules/to-regex-range": {
1210 |       "version": "5.0.1",
1211 |       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
1212 |       "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
1213 |       "license": "MIT",
1214 |       "dependencies": {
1215 |         "is-number": "^7.0.0"
1216 |       },
1217 |       "engines": {
1218 |         "node": ">=8.0"
1219 |       }
1220 |     },
1221 |     "node_modules/toidentifier": {
1222 |       "version": "1.0.1",
1223 |       "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
1224 |       "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA==",
1225 |       "engines": {
1226 |         "node": ">=0.6"
1227 |       }
1228 |     },
1229 |     "node_modules/touch": {
1230 |       "version": "3.1.1",
1231 |       "resolved": "https://registry.npmjs.org/touch/-/touch-3.1.1.tgz",
1232 |       "integrity": "sha512-r0eojU4bI8MnHr8c5bNo7lJDdI2qXlWWJk6a9EAFG7vbhTjElYhBVS3/miuE0uOuoLdb8Mc/rVfsmm6eo5o9GA==",
1233 |       "license": "ISC",
1234 |       "bin": {
1235 |         "nodetouch": "bin/nodetouch.js"
1236 |       }
1237 |     },
1238 |     "node_modules/tough-cookie": {
1239 |       "version": "2.5.0",
1240 |       "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.5.0.tgz",
1241 |       "integrity": "sha512-nlLsUzgm1kfLXSXfRZMc1KLAugd4hqJHDTvc2hDIwS3mZAfMEuMbc03SujMF+GEcpaX/qboeycw6iO8JwVv2+g==",
1242 |       "dependencies": {
1243 |         "psl": "^1.1.28",
1244 |         "punycode": "^2.1.1"
1245 |       },
1246 |       "engines": {
1247 |         "node": ">=0.8"
1248 |       }
1249 |     },
1250 |     "node_modules/tunnel-agent": {
1251 |       "version": "0.6.0",
1252 |       "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
1253 |       "integrity": "sha512-McnNiV1l8RYeY8tBgEpuodCC1mLUdbSN+CYBL7kJsJNInOP8UjDDEwdk6Mw60vdLLrr5NHKZhMAOSrR2NZuQ+w==",
1254 |       "dependencies": {
1255 |         "safe-buffer": "^5.0.1"
1256 |       },
1257 |       "engines": {
1258 |         "node": "*"
1259 |       }
1260 |     },
1261 |     "node_modules/tweetnacl": {
1262 |       "version": "0.14.5",
1263 |       "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
1264 |       "integrity": "sha512-KXXFFdAbFXY4geFIwoyNK+f5Z1b7swfXABfL7HXCmoIWMKU3dmS26672A4EeQtDzLKy7SXmfBu51JolvEKwtGA=="
1265 |     },
1266 |     "node_modules/type-is": {
1267 |       "version": "1.6.18",
1268 |       "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
1269 |       "integrity": "sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==",
1270 |       "dependencies": {
1271 |         "media-typer": "0.3.0",
1272 |         "mime-types": "~2.1.24"
1273 |       },
1274 |       "engines": {
1275 |         "node": ">= 0.6"
1276 |       }
1277 |     },
1278 |     "node_modules/undefsafe": {
1279 |       "version": "2.0.5",
1280 |       "resolved": "https://registry.npmjs.org/undefsafe/-/undefsafe-2.0.5.tgz",
1281 |       "integrity": "sha512-WxONCrssBM8TSPRqN5EmsjVrsv4A8X12J4ArBiiayv3DyyG3ZlIg6yysuuSYdZsVz3TKcTg2fd//Ujd4CHV1iA==",
1282 |       "license": "MIT"
1283 |     },
1284 |     "node_modules/unpipe": {
1285 |       "version": "1.0.0",
1286 |       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
1287 |       "integrity": "sha512-pjy2bYhSsufwWlKwPc+l3cN7+wuJlK6uz0YdJEOlQDbl6jo/YlPi4mb8agUkVC8BF7V8NuzeyPNqRksA3hztKQ==",
1288 |       "engines": {
1289 |         "node": ">= 0.8"
1290 |       }
1291 |     },
1292 |     "node_modules/uri-js": {
1293 |       "version": "4.4.1",
1294 |       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
1295 |       "integrity": "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==",
1296 |       "dependencies": {
1297 |         "punycode": "^2.1.0"
1298 |       }
1299 |     },
1300 |     "node_modules/utils-merge": {
1301 |       "version": "1.0.1",
1302 |       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
1303 |       "integrity": "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA==",
1304 |       "engines": {
1305 |         "node": ">= 0.4.0"
1306 |       }
1307 |     },
1308 |     "node_modules/uuid": {
1309 |       "version": "3.4.0",
1310 |       "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.4.0.tgz",
1311 |       "integrity": "sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==",
1312 |       "deprecated": "Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.",
1313 |       "bin": {
1314 |         "uuid": "bin/uuid"
1315 |       }
1316 |     },
1317 |     "node_modules/vary": {
1318 |       "version": "1.1.2",
1319 |       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
1320 |       "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg==",
1321 |       "engines": {
1322 |         "node": ">= 0.8"
1323 |       }
1324 |     },
1325 |     "node_modules/verror": {
1326 |       "version": "1.10.0",
1327 |       "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
1328 |       "integrity": "sha512-ZZKSmDAEFOijERBLkmYfJ+vmk3w+7hOLYDNkRCuRuMJGEmqYNCNLyBBFwWKVMhfwaEF3WOd0Zlw86U/WC/+nYw==",
1329 |       "engines": [
1330 |         "node >=0.6.0"
1331 |       ],
1332 |       "dependencies": {
1333 |         "assert-plus": "^1.0.0",
1334 |         "core-util-is": "1.0.2",
1335 |         "extsprintf": "^1.2.0"
1336 |       }
1337 |     },
1338 |     "node_modules/verror/node_modules/core-util-is": {
1339 |       "version": "1.0.2",
1340 |       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
1341 |       "integrity": "sha512-3lqz5YjWTYnW6dlDa5TLaTCcShfar1e40rmcJVwCBJC6mWlFuj0eCHIElmG1g5kyuJ/GD+8Wn4FFCcz4gJPfaQ=="
1342 |     }
1343 |   }
1344 | }
1345 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "dependencies": {
 3 |     "cors": "^2.8.5",
 4 |     "express": "^4.17.3",
 5 |     "nodemon": "^3.1.9",
 6 |     "request": "^2.88.2"
 7 |   },
 8 |   "name": "server",
 9 |   "version": "1.0.0",
10 |   "main": "server.js",
11 |   "scripts": {
12 |     "test": "echo \"Error: no test specified\" && exit 1",
13 |     "start": "nodemon server.js"
14 |   },
15 |   "keywords": [],
16 |   "author": "",
17 |   "license": "ISC",
18 |   "description": ""
19 | }
20 | 


--------------------------------------------------------------------------------
/server.js:
--------------------------------------------------------------------------------
 1 | const express = require('express');
 2 | const app = express();
 3 | const { ChessEngine } = require("./utils/engine")
 4 | const { VARS } = require("./VARS")
 5 | const cors = require("cors")
 6 | 
 7 | try {
 8 |     app.listen(VARS.PORT, () => console.log(`Listening on port ${VARS.PORT}`))
 9 |     app.use(cors())
10 | } catch (error) {
11 |     console.log("Server is already running !!")
12 | }
13 | 
14 | 
15 | 
16 | // VARS
17 | const chessEngine = new ChessEngine()
18 | var counter = 0
19 | 
20 | 
21 | 
22 | 
23 | 
24 | app.get("/getBestMove", (req, res) => {
25 |     var fen = req.query.fen || "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"
26 |     var depth = req.query.depth || 10
27 |     var movetime = req.query.movetime || 500
28 | 
29 |     var turn = req.query.turn || "w"
30 |     //var engine_type = req.query.engine_type || VARS.ENGINE_TYPES[0]
31 |     var engine_name = req.query.engine_name || "stockfish.exe"
32 |     var engine_mode = req.query.engine_mode || 0
33 | 
34 | 
35 |     if (depth > 20) {
36 |         depth = 20
37 |     }
38 | 
39 |     counter++
40 |     console.log("\n#" + counter + " turn updated to: " + (turn === 'w' ? 'White' : 'Black'))
41 | 
42 | 
43 |     chessEngine.start(counter, engine_mode, turn, depth, movetime, engine_name, fen).then((result) => {
44 | 
45 |         const parsedResult = {
46 |             fen: result.fen,
47 |             bestMove: result.bestMove,
48 |             ponder: result.ponder,
49 |             turn: result.turn,
50 |             depth: depth,
51 |             movetime: movetime,
52 |             score: depth,
53 |             provider: engine_name
54 |         }
55 | 
56 | 
57 |         console.log("#" + result.id + " best move: " + parsedResult.bestMove)
58 |         return res.send({ success: true, data: parsedResult })
59 |     }).catch((error) => {
60 |         console.log("Error: " + error)
61 |         return res.send({ success: false, data: error.message })
62 |     })
63 | })
64 | 


--------------------------------------------------------------------------------
/tampermonkey script/content/UserGui.js:
--------------------------------------------------------------------------------
   1 | /*
   2 | * usergui.js
   3 | * v1.0.1
   4 | * https://github.com/AugmentedWeb/UserGui
   5 | * Apache 2.0 licensed
   6 | */
   7 | 
   8 | class UserGui {
   9 | 	constructor() {
  10 | 		const grantArr = GM_info?.script?.grant;
  11 | 	
  12 | 		if(typeof grantArr == "object") {
  13 | 			if(!grantArr.includes("GM_xmlhttpRequest")) {
  14 | 				prompt(`${this.#projectName} needs GM_xmlhttpRequest!\n\nPlease add this to your userscript's header...`, "// @grant       GM_xmlhttpRequest");
  15 | 			}
  16 | 
  17 | 			if(!grantArr.includes("GM_getValue")) {
  18 | 				prompt(`${this.#projectName} needs GM_getValue!\n\nPlease add this to your userscript's header...`, "// @grant       GM_getValue");
  19 | 			}
  20 | 
  21 | 			if(!grantArr.includes("GM_setValue")) {
  22 | 				prompt(`${this.#projectName} needs GM_setValue!\n\nPlease add this to your userscript's header...`, "// @grant       GM_setValue");
  23 | 			}
  24 | 		}
  25 | 	}
  26 | 	
  27 | 	#projectName = "UserGui";
  28 | 	window = undefined;
  29 | 	document = undefined;
  30 | 	iFrame = undefined;
  31 | 	settings = {
  32 | 		"window" : {
  33 | 			"title" : "Smart Chess Bot",
  34 | 			"name" : "userscript-gui",
  35 | 			"external" : false,
  36 | 			"centered" : false,
  37 | 			"size" : {
  38 | 				"width" : 300,
  39 | 				"height" : 500,
  40 | 				"dynamicSize" : true
  41 | 			}
  42 | 		},
  43 | 		"gui" : {
  44 | 			"centeredItems" : false,
  45 | 			"internal" : {
  46 | 				"darkCloseButton" : false,
  47 | 				"style" : `
  48 | 					body {
  49 | 						background-color: #ffffff;
  50 | 						overflow: hidden;
  51 | 						width: 100% !important;
  52 | 					}
  53 | 
  54 | 					form {
  55 | 						padding: 10px;
  56 | 					}
  57 | 			
  58 | 					#gui {
  59 | 						height: fit-content;
  60 | 					}
  61 | 			
  62 | 					.rendered-form {
  63 | 						padding: 10px;
  64 | 					}
  65 | 
  66 | 					#header {
  67 | 						padding: 10px;
  68 | 						cursor: move;
  69 | 						z-index: 10;
  70 | 						background-color: #2196F3;
  71 | 						color: #fff;
  72 | 						height: fit-content;
  73 | 					}
  74 | 
  75 | 					.header-item-container {
  76 | 						display: flex;
  77 | 						justify-content: space-between;
  78 | 						align-items: center;
  79 | 					}
  80 | 			
  81 | 					.left-title {
  82 | 						font-size: 14px;
  83 | 						font-weight: bold;
  84 | 						padding: 0;
  85 | 						margin: 0;
  86 | 					}
  87 | 					
  88 | 					#button-close-gui {
  89 | 						vertical-align: middle;
  90 | 						
  91 | 					}
  92 | 
  93 | 					div .form-group {
  94 | 						margin-bottom: 15px;
  95 | 					}
  96 | 
  97 | 					#resizer {
  98 | 						width: 10px;
  99 | 						height: 10px;
 100 | 						cursor: se-resize;
 101 | 						position: absolute;
 102 | 						bottom: 0;
 103 | 						right: 0;
 104 | 					}
 105 | 
 106 | 					.formbuilder-button {
 107 | 					    width: fit-content;
 108 | 					}
 109 | 				`
 110 | 			},
 111 | 			"external" : {
 112 | 				"popup" : true,
 113 | 				"style" : `
 114 | 					.rendered-form {
 115 | 						padding: 10px; 
 116 | 					}
 117 | 					div .form-group {
 118 | 						margin-bottom: 15px;
 119 | 					}
 120 | 				`
 121 | 			}
 122 | 		},
 123 | 		"messages" : {
 124 | 			"blockedPopups" : () => alert(`The GUI (graphical user interface) failed to open!\n\nPossible reason: The popups are blocked.\n\nPlease allow popups for this site. (${window.location.hostname})`)
 125 | 		}
 126 | 	};
 127 | 
 128 | 	// This error page will be shown if the user has not added any pages
 129 | 	#errorPage = (title, code) => `
 130 | 		<style>
 131 | 			.error-page {
 132 | 				width: 100%;
 133 | 				height: fit-content;
 134 | 				background-color: black;
 135 | 				display: flex;
 136 | 				justify-content: center;
 137 | 				align-items: center;
 138 | 				text-align: center;
 139 | 				padding: 25px
 140 | 			}
 141 | 			.error-page-text {
 142 | 				font-family: monospace;
 143 | 				font-size: x-large;
 144 | 				color: white;
 145 | 			}
 146 | 			.error-page-tag {
 147 | 				margin-top: 20px;
 148 | 				font-size: 10px;
 149 | 				color: #4a4a4a;
 150 | 				font-style: italic;
 151 | 				margin-bottom: 0px;
 152 | 			}
 153 | 		</style>
 154 | 		<div class="error-page">
 155 | 			<div>
 156 | 				<p class="error-page-text">${title}</p>
 157 | 				<code>${code}</code>
 158 | 				<p class="error-page-tag">${this.#projectName} error message</p>
 159 | 			</div>
 160 | 		</div>`;
 161 | 
 162 | 	// The user can add multiple pages to their GUI. The pages are stored in this array.
 163 | 	#guiPages = [
 164 | 		{
 165 | 			"name" : "default_no_content_set",
 166 | 			"content" : this.#errorPage("Content missing", "Gui.setContent(html, tabName);")
 167 | 		}
 168 | 	];
 169 | 
 170 | 	// The userscript manager's xmlHttpRequest is used to bypass CORS limitations (To load Bootstrap)
 171 | 	async #bypassCors(externalFile) {
 172 | 		const res = await new Promise(resolve => {
 173 | 			GM_xmlhttpRequest({
 174 | 			method: "GET",
 175 | 			url: externalFile,
 176 | 			onload: resolve
 177 | 			});
 178 | 		});
 179 | 
 180 | 		return res.responseText;
 181 | 	}
 182 | 
 183 | 	// Returns one tab (as HTML) for the navigation tabs
 184 | 	#createNavigationTab(page) {
 185 | 		const name = page.name;
 186 | 
 187 | 		if(name == undefined) {
 188 | 			console.error(`[${this.#projectName}] Gui.addPage(html, name) <- name missing!`);
 189 | 			return undefined;
 190 | 		} else {
 191 | 			const modifiedName = name.toLowerCase().replaceAll(' ', '').replace(/[^a-zA-Z0-9]/g, '') + Math.floor(Math.random() * 1000000000);
 192 | 
 193 | 			const content = page.content;
 194 | 			const indexOnArray = this.#guiPages.map(x => x.name).indexOf(name);
 195 | 			const firstItem = indexOnArray == 0 ? true : false;
 196 | 
 197 | 			return {
 198 | 				"listItem" : `
 199 | 					<li class="nav-item" role="presentation">
 200 | 						<button class="nav-link ${firstItem ? 'active' : ''}" id="${modifiedName}-tab" data-bs-toggle="tab" data-bs-target="#${modifiedName}" type="button" role="tab" aria-controls="${modifiedName}" aria-selected="${firstItem}">${name}</button>
 201 | 					</li>
 202 | 				`,
 203 | 				"panelItem" : `
 204 | 					<div class="tab-pane ${firstItem ? 'active' : ''}" id="${modifiedName}" role="tabpanel" aria-labelledby="${modifiedName}-tab">${content}</div>
 205 | 				`
 206 | 			};
 207 | 		}
 208 | 	}
 209 | 
 210 | 	// Make tabs function without bootstrap.js (CSP might block bootstrap and make the GUI nonfunctional)
 211 | 	#initializeTabs() {
 212 | 		const handleTabClick = e => {
 213 | 			const target = e.target;
 214 | 			const contentID = target.getAttribute("data-bs-target");
 215 | 
 216 | 			target.classList.add("active");
 217 | 			this.document.querySelector(contentID).classList.add("active");
 218 | 	
 219 | 			[...this.document.querySelectorAll(".nav-link")].forEach(tab => {
 220 | 				if(tab != target) {
 221 | 					const contentID = tab.getAttribute("data-bs-target");
 222 | 
 223 | 					tab.classList.remove("active");
 224 | 					this.document.querySelector(contentID).classList.remove("active");
 225 | 				}
 226 | 			});
 227 | 		}
 228 | 
 229 | 		[...this.document.querySelectorAll(".nav-link")].forEach(tab => {
 230 | 			tab.addEventListener("click", handleTabClick);
 231 | 		});
 232 | 	}
 233 | 
 234 | 	// Will determine if a navbar is needed, returns either a regular GUI, or a GUI with a navbar
 235 | 	#getContent() {
 236 | 		// Only one page has been set, no navigation tabs will be created
 237 | 		if(this.#guiPages.length == 1) {
 238 | 			return this.#guiPages[0].content;
 239 | 		}
 240 | 		// Multiple pages has been set, dynamically creating the navigation tabs
 241 | 		else if(this.#guiPages.length > 1) {
 242 | 			const tabs = (list, panels) => `
 243 | 				<ul class="nav nav-tabs" id="userscript-tab" role="tablist">
 244 | 					${list}
 245 | 				</ul>
 246 | 				<div class="tab-content">
 247 | 					${panels}
 248 | 				</div>
 249 | 			`;
 250 | 
 251 | 			let list = ``;
 252 | 			let panels = ``;
 253 | 
 254 | 			this.#guiPages.forEach(page => {
 255 | 				const data = this.#createNavigationTab(page);
 256 | 
 257 | 				if(data != undefined) {
 258 | 					list += data.listItem + '\n';
 259 | 					panels += data.panelItem + '\n';
 260 | 				}
 261 | 			});
 262 | 
 263 | 			return tabs(list, panels);
 264 | 		}
 265 | 	}
 266 | 
 267 | 	// Returns the GUI's whole document as string
 268 | 	async #createDocument() {
 269 | 		const bootstrapStyling = await this.#bypassCors("https://raw.githubusercontent.com/AugmentedWeb/UserGui/main/resources/bootstrap.css");
 270 | 
 271 | 		const externalDocument = `
 272 | 		<!DOCTYPE html>
 273 | 		<html>
 274 | 		<head>
 275 | 			<title>${this.settings.window.title}</title>
 276 | 			<style>
 277 | 			${bootstrapStyling}
 278 | 			${this.settings.gui.external.style}
 279 | 			${
 280 | 			this.settings.gui.centeredItems 
 281 | 				? `.form-group {
 282 | 						display: flex;
 283 | 						justify-content: center;
 284 | 					}`
 285 | 				: ""
 286 | 			}
 287 | 			</style>
 288 | 		</head>
 289 | 		<body>
 290 | 		${this.#getContent()}
 291 | 		</body>
 292 | 		</html>
 293 | 		`;
 294 | 
 295 | 		const internalDocument = `
 296 | 		<!doctype html>
 297 | 		<html lang="en">
 298 | 		<head>
 299 | 			<style>
 300 | 			${bootstrapStyling}
 301 | 			${this.settings.gui.internal.style}
 302 | 			${
 303 | 			this.settings.gui.centeredItems 
 304 | 				? `.form-group {
 305 | 						display: flex;
 306 | 						justify-content: center;
 307 | 					}`
 308 | 				: ""
 309 | 			}
 310 | 			</style>
 311 | 		</head>
 312 | 		<body>
 313 | 			<div id="gui">
 314 | 				<div id="header">
 315 | 					<div class="header-item-container">
 316 | 						<h1 class="left-title">${this.settings.window.title}</h1>
 317 | 						<div class="right-buttons">
 318 | 							<button type="button" class="${this.settings.gui.internal.darkCloseButton ? "btn-close" : "btn-close btn-close-white"}" aria-label="Close" id="button-close-gui"></button>
 319 | 						</div>
 320 | 					</div>
 321 | 				</div>
 322 | 				<div id="content">
 323 | 				${this.#getContent()}
 324 | 				</div>
 325 | 				<div id="resizer"></div>
 326 | 			</div>
 327 | 		</body>
 328 | 		</html>
 329 | 		`;
 330 | 
 331 | 		if(this.settings.window.external) {
 332 | 			return externalDocument;
 333 | 		} else {
 334 | 			return internalDocument;
 335 | 		}
 336 | 	}
 337 | 
 338 | 	// The user will use this function to add a page to their GUI, with their own HTML (Bootstrap 5)
 339 | 	addPage(tabName, htmlString) {
 340 | 		if(this.#guiPages[0].name == "default_no_content_set") {
 341 | 			this.#guiPages = [];
 342 | 		}
 343 | 
 344 | 		this.#guiPages.push({
 345 | 			"name" : tabName,
 346 | 			"content" : htmlString
 347 | 		});
 348 | 	}
 349 | 
 350 | 	#getCenterScreenPosition() {
 351 | 		const guiWidth = this.settings.window.size.width;
 352 | 		const guiHeight = this.settings.window.size.height;
 353 | 
 354 | 		const x = (screen.width - guiWidth) / 2;
 355 | 		const y = (screen.height - guiHeight) / 2;
 356 | 		
 357 | 		return { "x" : x, "y": y };
 358 | 	}
 359 | 
 360 | 	#getCenterWindowPosition() {
 361 | 		const guiWidth = this.settings.window.size.width;
 362 | 		const guiHeight = this.settings.window.size.height;
 363 | 
 364 | 		const x = (window.innerWidth - guiWidth) / 2;
 365 | 		const y = (window.innerHeight - guiHeight) / 2;
 366 | 		
 367 | 		return { "x" : x, "y": y };
 368 | 	}
 369 | 
 370 | 	#initializeInternalGuiEvents(iFrame) {
 371 | 		// - The code below will consist mostly of drag and resize implementations
 372 | 		// - iFrame window <-> Main window interaction requires these to be done
 373 | 		// - Basically, iFrame document's event listeners make the whole iFrame move on the main window
 374 | 
 375 | 		// Sets the iFrame's size
 376 | 		function setFrameSize(x, y) {
 377 | 			iFrame.style.width = `${x}px`;
 378 | 			iFrame.style.height = `${y}px`;
 379 | 		}
 380 | 
 381 | 		// Gets the iFrame's size
 382 | 		function getFrameSize() {
 383 | 			const frameBounds = iFrame.getBoundingClientRect();
 384 | 
 385 | 			return { "width" : frameBounds.width, "height" : frameBounds.height };
 386 | 		}
 387 | 
 388 | 		// Sets the iFrame's position relative to the main window's document
 389 | 		function setFramePos(x, y) {
 390 | 			iFrame.style.left = `${x}px`;
 391 | 			iFrame.style.top = `${y}px`;
 392 | 		}
 393 | 
 394 | 		// Gets the iFrame's position relative to the main document
 395 | 		function getFramePos() {
 396 | 			const frameBounds = iFrame.getBoundingClientRect();
 397 | 			
 398 | 			return { "x": frameBounds.x, "y" : frameBounds.y };
 399 | 		}
 400 | 
 401 | 		// Gets the frame body's offsetHeight
 402 | 		function getInnerFrameSize() {
 403 | 			const innerFrameElem = iFrame.contentDocument.querySelector("#gui");
 404 | 
 405 | 			return { "x": innerFrameElem.offsetWidth, "y" : innerFrameElem.offsetHeight };
 406 | 		}
 407 | 
 408 | 		// Sets the frame's size to the innerframe's size
 409 | 		const adjustFrameSize = () => {
 410 | 			const innerFrameSize = getInnerFrameSize();
 411 | 
 412 | 			setFrameSize(innerFrameSize.x, innerFrameSize.y);
 413 | 		}
 414 | 
 415 | 		// Variables for draggable header
 416 | 		let dragging = false,
 417 | 			dragStartPos = { "x" : 0, "y" : 0 };
 418 | 
 419 | 		// Variables for resizer
 420 | 		let resizing = false,
 421 | 			mousePos = { "x" : undefined, "y" : undefined },
 422 | 			lastFrame;
 423 | 
 424 | 		function handleResize(isInsideFrame, e) {
 425 | 			if(mousePos.x == undefined && mousePos.y == undefined) {
 426 | 				mousePos.x = e.clientX;
 427 | 				mousePos.y = e.clientY;
 428 | 
 429 | 				lastFrame = isInsideFrame;
 430 | 			}
 431 | 
 432 | 			const deltaX = mousePos.x - e.clientX,
 433 | 				  deltaY = mousePos.y - e.clientY;
 434 | 
 435 | 			const frameSize = getFrameSize();
 436 | 			const allowedSize = frameSize.width - deltaX > 160 && frameSize.height - deltaY > 90;
 437 | 
 438 | 			if(isInsideFrame == lastFrame && allowedSize) {
 439 | 				setFrameSize(frameSize.width - deltaX, frameSize.height - deltaY);
 440 | 			}
 441 | 
 442 | 			mousePos.x = e.clientX;
 443 | 			mousePos.y = e.clientY;
 444 | 
 445 | 			lastFrame = isInsideFrame;
 446 | 		}
 447 | 
 448 | 		function handleDrag(isInsideFrame, e) {
 449 | 			const bR = iFrame.getBoundingClientRect();
 450 | 
 451 | 			const windowWidth = window.innerWidth,
 452 | 				windowHeight = window.innerHeight;
 453 | 
 454 | 			let x, y;
 455 | 
 456 | 			if(isInsideFrame) {
 457 | 				x = getFramePos().x += e.clientX - dragStartPos.x;
 458 | 				y = getFramePos().y += e.clientY - dragStartPos.y;
 459 | 			} else {
 460 | 				x = e.clientX - dragStartPos.x;
 461 | 				y = e.clientY - dragStartPos.y;
 462 | 			}
 463 | 
 464 | 			// Check out of bounds: left
 465 | 			if(x <= 0) {
 466 | 				x = 0
 467 | 			}
 468 | 
 469 | 			// Check out of bounds: right
 470 | 			if(x + bR.width >= windowWidth) {
 471 | 				x = windowWidth - bR.width;
 472 | 			}
 473 | 
 474 | 			// Check out of bounds: top
 475 | 			if(y <= 0) {
 476 | 				y = 0;
 477 | 			}
 478 | 
 479 | 			// Check out of bounds: bottom
 480 | 			if(y + bR.height >= windowHeight) {
 481 | 				y = windowHeight - bR.height;
 482 | 			}
 483 | 
 484 | 			setFramePos(x, y);
 485 | 		}
 486 | 
 487 | 		// Dragging start (iFrame)
 488 | 		this.document.querySelector("#header").addEventListener('mousedown', e => {
 489 | 			e.preventDefault();
 490 | 
 491 | 			dragging = true;
 492 | 
 493 | 			dragStartPos.x = e.clientX;
 494 | 			dragStartPos.y = e.clientY;
 495 | 		});
 496 | 
 497 | 		// Resizing start
 498 | 		this.document.querySelector("#resizer").addEventListener('mousedown', e => {
 499 | 			e.preventDefault();
 500 | 
 501 | 			resizing = true;
 502 | 		});
 503 | 
 504 | 		// While dragging or resizing (iFrame)
 505 | 		this.document.addEventListener('mousemove', e => {
 506 | 			if(dragging)
 507 | 				handleDrag(true, e);
 508 | 
 509 | 			if(resizing) 
 510 | 				handleResize(true, e);
 511 | 		});
 512 | 
 513 | 		// While dragging or resizing (Main window)
 514 | 		document.addEventListener('mousemove', e => {
 515 | 			if(dragging)
 516 | 				handleDrag(false, e);
 517 | 
 518 | 			if(resizing)
 519 | 				handleResize(false, e);
 520 | 		});
 521 | 
 522 | 		// Stop dragging and resizing (iFrame)
 523 | 		this.document.addEventListener('mouseup', e => {
 524 | 			e.preventDefault();
 525 | 			
 526 | 			dragging = false;
 527 | 			resizing = false;
 528 | 		});
 529 | 
 530 | 		// Stop dragging and resizing (Main window)
 531 | 		document.addEventListener('mouseup', e => {
 532 | 			dragging = false;
 533 | 			resizing = false;
 534 | 		});
 535 | 		
 536 | 		
 537 | 
 538 | 
 539 | 		const guiObserver = new MutationObserver(adjustFrameSize);
 540 | 		const guiElement = this.document.querySelector("#gui");
 541 | 
 542 | 		guiObserver.observe(guiElement, {
 543 | 			childList: true,
 544 | 			subtree: true,
 545 | 			attributes: true
 546 | 		});
 547 | 		
 548 | 		adjustFrameSize();
 549 | 	}
 550 | 
 551 | 	async #openExternalGui(readyFunction) {
 552 | 		const noWindow = this.window?.closed;
 553 | 
 554 | 		if(noWindow || this.window == undefined) {
 555 | 			let pos = "";
 556 | 			let windowSettings = "";
 557 | 
 558 | 			if(this.settings.window.centered && this.settings.gui.external.popup) {
 559 | 				const centerPos = this.#getCenterScreenPosition();
 560 | 				pos = `left=${centerPos.x}, top=${centerPos.y}`;
 561 | 			}
 562 | 
 563 | 			if(this.settings.gui.external.popup) {
 564 | 				windowSettings = `width=${this.settings.window.size.width}, height=${this.settings.window.size.height}, ${pos}`;
 565 | 			}
 566 | 
 567 | 			// Create a new window for the GUI
 568 | 			this.window = window.open("", this.settings.windowName, windowSettings);
 569 | 
 570 | 			if(!this.window) {
 571 | 				this.settings.messages.blockedPopups();
 572 | 				return;
 573 | 			}
 574 | 
 575 | 			// Write the document to the new window
 576 | 			this.window.document.open();
 577 | 			this.window.document.write(await this.#createDocument());
 578 | 			this.window.document.close();
 579 | 
 580 | 			if(!this.settings.gui.external.popup) {
 581 | 				this.window.document.body.style.width = `${this.settings.window.size.width}px`;
 582 | 
 583 | 				if(this.settings.window.centered) {
 584 | 					const centerPos = this.#getCenterScreenPosition();
 585 | 
 586 | 					this.window.document.body.style.position = "absolute";
 587 | 					this.window.document.body.style.left = `${centerPos.x}px`;
 588 | 					this.window.document.body.style.top = `${centerPos.y}px`;
 589 | 				}
 590 | 			}
 591 | 
 592 | 			// Dynamic sizing (only height & window.outerHeight no longer works on some browsers...)
 593 | 			this.window.resizeTo(
 594 | 				this.settings.window.size.width,
 595 | 				this.settings.window.size.dynamicSize 
 596 | 					? this.window.document.body.offsetHeight + (this.window.outerHeight - this.window.innerHeight)
 597 | 					: this.settings.window.size.height
 598 | 			);
 599 | 
 600 | 			this.document = this.window.document;
 601 | 
 602 | 			this.#initializeTabs();
 603 | 
 604 | 			// Call user's function
 605 | 			if(typeof readyFunction == "function") {
 606 | 				readyFunction();
 607 | 			}
 608 | 
 609 | 			window.onbeforeunload = () => {
 610 | 				// Close the GUI if parent window closes
 611 | 				this.close();
 612 | 			}
 613 | 		} 
 614 | 		
 615 | 		else {
 616 | 			// Window was already opened, bring the window back to focus
 617 | 			this.window.focus();
 618 | 		}
 619 | 	}
 620 | 
 621 | 	async #openInternalGui(readyFunction) {
 622 | 		if(this.iFrame) {
 623 | 			return;
 624 | 		}
 625 | 
 626 | 		const fadeInSpeedMs = 250;
 627 | 
 628 | 		let left = 0, top = 0;
 629 | 
 630 | 		if(this.settings.window.centered) {
 631 | 			const centerPos = this.#getCenterWindowPosition();
 632 | 
 633 | 			left = centerPos.x;
 634 | 			top = centerPos.y;
 635 | 		}
 636 | 
 637 | 		const iframe = document.createElement("iframe");
 638 | 		iframe.srcdoc = await this.#createDocument();
 639 | 		iframe.style = `
 640 | 			position: fixed;
 641 | 			top: ${top}px;
 642 | 			left: ${left}px;
 643 | 			width: ${this.settings.window.size.width};
 644 | 			height: ${this.settings.window.size.height};
 645 | 			border: 0;
 646 | 			opacity: 0;
 647 | 			transition: all ${fadeInSpeedMs/1000}s;
 648 | 			border-radius: 5px;
 649 | 			box-shadow: rgb(0 0 0 / 6%) 10px 10px 10px;
 650 | 			z-index: 2147483647;
 651 | 		`;
 652 | 
 653 | 		const waitForBody = setInterval(() => {
 654 | 			if(document?.body) {
 655 | 				clearInterval(waitForBody);
 656 | 
 657 | 				// Prepend the GUI to the document's body
 658 | 				document.body.prepend(iframe);
 659 | 
 660 | 				iframe.contentWindow.onload = () => {
 661 | 					// Fade-in implementation
 662 | 					setTimeout(() => iframe.style["opacity"] = "1", fadeInSpeedMs/2);
 663 | 					setTimeout(() => iframe.style["transition"] = "none", fadeInSpeedMs + 500);
 664 | 		
 665 | 					this.window = iframe.contentWindow;
 666 | 					this.document = iframe.contentDocument;
 667 | 					this.iFrame = iframe;
 668 | 		
 669 | 					this.#initializeInternalGuiEvents(iframe);
 670 | 					this.#initializeTabs();
 671 | 					
 672 | 					readyFunction();
 673 | 				}
 674 | 			}
 675 | 		}, 100);
 676 | 	}
 677 | 
 678 | 	// Determines if the window is to be opened externally or internally
 679 | 	open(readyFunction) {
 680 | 		if(this.settings.window.external) {
 681 | 			this.#openExternalGui(readyFunction);
 682 | 		} else {
 683 | 			this.#openInternalGui(readyFunction);
 684 | 		}
 685 | 	}
 686 | 
 687 | 	// Closes the GUI if it exists
 688 | 	close() {
 689 | 		if(this.settings.window.external) {
 690 | 			if(this.window) {
 691 | 				this.window.close();
 692 | 			}
 693 | 		} else {
 694 | 			if(this.iFrame) {
 695 | 				this.iFrame.remove();
 696 | 				this.iFrame = undefined;
 697 | 			}
 698 | 		}
 699 | 	}
 700 | 
 701 | 	saveConfig() {
 702 | 		let config = [];
 703 | 
 704 | 		if(this.document) {
 705 | 			[...this.document.querySelectorAll(".form-group")].forEach(elem => {
 706 | 				const inputElem = elem.querySelector("[name]");
 707 | 	
 708 | 				const name = inputElem.getAttribute("name"),
 709 | 					  data = this.getData(name);
 710 | 	
 711 | 				if(data) {
 712 | 					config.push({ "name" : name, "value" : data });
 713 | 				}
 714 | 			});
 715 | 		}
 716 | 
 717 | 		GM_setValue("config", config);
 718 | 	}
 719 | 
 720 | 	loadConfig() {
 721 | 		const config = this.getConfig();
 722 | 
 723 | 		if(this.document && config) {
 724 | 			config.forEach(elemConfig => {
 725 | 				this.setData(elemConfig.name, elemConfig.value);
 726 | 			})
 727 | 		}
 728 | 	}
 729 | 
 730 | 	getConfig() {
 731 | 		return GM_getValue("config");
 732 | 	}
 733 | 
 734 | 	resetConfig() {
 735 | 		const config = this.getConfig();
 736 | 
 737 | 		if(config) {
 738 | 			GM_setValue("config", []);
 739 | 		}
 740 | 	}
 741 | 
 742 | 	dispatchFormEvent(name) {
 743 | 		const type = name.split("-")[0].toLowerCase();
 744 | 		const properties = this.#typeProperties.find(x => type == x.type);
 745 | 		const event = new Event(properties.event);
 746 | 
 747 | 		const field = this.document.querySelector(`.field-${name}`);
 748 | 		field.dispatchEvent(event);
 749 | 	}
 750 | 
 751 | 	setPrimaryColor(hex) {
 752 | 		const styles = `
 753 | 		#header {
 754 | 			background-color: ${hex} !important;
 755 | 		}
 756 | 		.nav-link {
 757 | 			color: ${hex} !important;
 758 | 		}
 759 | 		.text-primary {
 760 | 			color: ${hex} !important;
 761 | 		}
 762 | 		`;
 763 | 		
 764 | 		const styleSheet = document.createElement("style")
 765 | 		styleSheet.innerText = styles;
 766 | 		this.document.head.appendChild(styleSheet);
 767 | 	}
 768 | 
 769 | 	// Creates an event listener a GUI element
 770 | 	event(name, event, eventFunction) {
 771 | 		this.document.querySelector(`.field-${name}`).addEventListener(event, eventFunction);
 772 | 	}
 773 | 
 774 | 	// Disables a GUI element
 775 | 	disable(name) {
 776 | 		[...this.document.querySelector(`.field-${name}`).children].forEach(childElem => {
 777 | 			childElem.setAttribute("disabled", "true");
 778 | 		});
 779 | 	}
 780 | 
 781 | 	// Enables a GUI element
 782 | 	enable(name) {
 783 | 		[...this.document.querySelector(`.field-${name}`).children].forEach(childElem => {
 784 | 			if(childElem.getAttribute("disabled")) {
 785 | 				childElem.removeAttribute("disabled");
 786 | 			}
 787 | 		});
 788 | 	}
 789 | 
 790 | 	// Gets data from types: TEXT FIELD, TEXTAREA, DATE FIELD & NUMBER
 791 | 	getValue(name) {
 792 | 		return this.document.querySelector(`.field-${name}`).querySelector(`[id=${name}]`).value;
 793 | 	}
 794 | 
 795 | 	// Sets data to types: TEXT FIELD, TEXT AREA, DATE FIELD & NUMBER
 796 | 	setValue(name, newValue) {
 797 | 		this.document.querySelector(`.field-${name}`).querySelector(`[id=${name}]`).value = newValue;
 798 | 
 799 | 		this.dispatchFormEvent(name);
 800 | 	}
 801 | 
 802 | 	// Gets data from types: RADIO GROUP
 803 | 	getSelection(name) {
 804 | 		return this.document.querySelector(`.field-${name}`).querySelector(`input[name=${name}]:checked`).value;
 805 | 	}
 806 | 
 807 | 	// Sets data to types: RADIO GROUP
 808 | 	setSelection(name, newOptionsValue) {
 809 | 		this.document.querySelector(`.field-${name}`).querySelector(`input[value=${newOptionsValue}]`).checked = true;
 810 | 
 811 | 		this.dispatchFormEvent(name);
 812 | 	}
 813 | 
 814 | 	// Gets data from types: CHECKBOX GROUP
 815 | 	getChecked(name) {
 816 | 		return [...this.document.querySelector(`.field-${name}`).querySelectorAll(`input[name*=${name}]:checked`)]
 817 | 			.map(checkbox => checkbox.value);
 818 | 	}
 819 | 
 820 | 	// Sets data to types: CHECKBOX GROUP
 821 | 	setChecked(name, checkedArr) {
 822 | 		const checkboxes = [...this.document.querySelector(`.field-${name}`).querySelectorAll(`input[name*=${name}]`)]
 823 | 		
 824 | 		checkboxes.forEach(checkbox => {
 825 | 			if(checkedArr.includes(checkbox.value)) {
 826 | 				checkbox.checked = true;
 827 | 			}
 828 | 		});
 829 | 
 830 | 		this.dispatchFormEvent(name);
 831 | 	}
 832 | 	
 833 | 	// Gets data from types: FILE UPLOAD
 834 | 	getFiles(name) {
 835 | 		return this.document.querySelector(`.field-${name}`).querySelector(`input[id=${name}]`).files;
 836 | 	}
 837 | 	
 838 | 	// Gets data from types: SELECT
 839 | 	getOption(name) {
 840 | 		const selectedArr = [...this.document.querySelector(`.field-${name} #${name}`).selectedOptions].map(({value}) => value);
 841 | 
 842 | 		return selectedArr.length == 1 ? selectedArr[0] : selectedArr;
 843 | 	}
 844 | 
 845 | 	// Sets data to types: SELECT
 846 | 	setOption(name, newOptionsValue) {
 847 | 		if(typeof newOptionsValue == 'object') {
 848 | 		    newOptionsValue.forEach(optionVal => {
 849 | 			this.document.querySelector(`.field-${name}`).querySelector(`option[value=${optionVal}]`).selected = true;
 850 | 		    });
 851 | 		} else {
 852 | 		    this.document.querySelector(`.field-${name}`).querySelector(`option[value=${newOptionsValue}]`).selected = true;
 853 | 		}
 854 | 
 855 | 		this.dispatchFormEvent(name);
 856 | 	}
 857 | 
 858 | 	#typeProperties = [
 859 | 		{
 860 | 			"type": "button",
 861 | 			"event": "click",
 862 | 			"function": {
 863 | 				"get" : null,
 864 | 				"set" : null
 865 | 			}
 866 | 		},
 867 | 		{
 868 | 			"type": "radio",
 869 | 			"event": "change",
 870 | 			"function": {
 871 | 				"get" : n => this.getSelection(n),
 872 | 				"set" : (n, nV) => this.setSelection(n, nV)
 873 | 			}
 874 | 		},
 875 | 		{
 876 | 			"type": "checkbox",
 877 | 			"event": "change",
 878 | 			"function": {
 879 | 				"get" : n => this.getChecked(n),
 880 | 				"set" : (n, nV) => this.setChecked(n, nV)
 881 | 			}
 882 | 		},
 883 | 		{
 884 | 			"type": "date",
 885 | 			"event": "change",
 886 | 			"function": {
 887 | 				"get" : n => this.getValue(n),
 888 | 				"set" : (n, nV) => this.setValue(n, nV)
 889 | 			}
 890 | 		},
 891 | 		{
 892 | 			"type": "file",
 893 | 			"event": "change",
 894 | 			"function": {
 895 | 				"get" : n => this.getFiles(n),
 896 | 				"set" : null
 897 | 			}
 898 | 		},
 899 | 		{
 900 | 			"type": "number",
 901 | 			"event": "input",
 902 | 			"function": {
 903 | 				"get" : n => this.getValue(n),
 904 | 				"set" : (n, nV) => this.setValue(n, nV)
 905 | 			}
 906 | 		},
 907 | 		{
 908 | 			"type": "select",
 909 | 			"event": "change",
 910 | 			"function": {
 911 | 				"get" : n => this.getOption(n),
 912 | 				"set" : (n, nV) => this.setOption(n, nV)
 913 | 			}
 914 | 		},
 915 | 		{
 916 | 			"type": "text",
 917 | 			"event": "input",
 918 | 			"function": {
 919 | 				"get" : n => this.getValue(n),
 920 | 				"set" : (n, nV) => this.setValue(n, nV)
 921 | 			}
 922 | 		},
 923 | 		{
 924 | 			"type": "textarea",
 925 | 			"event": "input",
 926 | 			"function": {
 927 | 				"get" : n => this.getValue(n),
 928 | 				"set" : (n, nV) => this.setValue(n, nV)
 929 | 			}
 930 | 		},
 931 | 	];
 932 | 
 933 | 	// The same as the event() function, but automatically determines the best listener type for the element
 934 | 	// (e.g. button -> listen for "click", textarea -> listen for "input")
 935 | 	smartEvent(name, eventFunction) {
 936 | 		if(name.includes("-")) {
 937 | 			const type = name.split("-")[0].toLowerCase();
 938 | 			const properties = this.#typeProperties.find(x => type == x.type);
 939 | 
 940 | 			if(typeof properties == "object") {
 941 | 				this.event(name, properties.event, eventFunction);
 942 | 
 943 | 			} else {
 944 | 				console.warn(`${this.#projectName}'s smartEvent function did not find any matches for the type "${type}". The event could not be made.`);
 945 | 			}
 946 | 
 947 | 		} else {
 948 | 			console.warn(`The input name "${name}" is invalid for ${this.#projectName}'s smartEvent. The event could not be made.`);
 949 | 		}
 950 | 	}
 951 | 
 952 | 	// Will automatically determine the suitable function for data retrivial
 953 | 	// (e.g. file select -> use getFiles() function)
 954 | 	getData(name) {
 955 | 		if(name.includes("-")) {
 956 | 			const type = name.split("-")[0].toLowerCase();
 957 | 			const properties = this.#typeProperties.find(x => type == x.type);
 958 | 
 959 | 			if(typeof properties == "object") {
 960 | 				const getFunction = properties.function.get;
 961 | 
 962 | 				if(typeof getFunction == "function") {
 963 | 					return getFunction(name);
 964 | 
 965 | 				} else {
 966 | 					console.error(`${this.#projectName}'s getData function can't be used for the type "${type}". The data can't be taken.`);
 967 | 				}
 968 | 
 969 | 			} else {
 970 | 				console.warn(`${this.#projectName}'s getData function did not find any matches for the type "${type}". The event could not be made.`);
 971 | 			}
 972 | 
 973 | 		} else {
 974 | 			console.warn(`The input name "${name}" is invalid for ${this.#projectName}'s getData function. The event could not be made.`);
 975 | 		}
 976 | 	}
 977 | 
 978 | 	// Will automatically determine the suitable function for data retrivial (e.g. checkbox -> use setChecked() function)
 979 | 	setData(name, newData) {
 980 | 		if(name.includes("-")) {
 981 | 			const type = name.split("-")[0].toLowerCase();
 982 | 			const properties = this.#typeProperties.find(x => type == x.type);
 983 | 
 984 | 			if(typeof properties == "object") {
 985 | 				const setFunction = properties.function.set;
 986 | 
 987 | 				if(typeof setFunction == "function") {
 988 | 					return setFunction(name, newData);
 989 | 
 990 | 				} else {
 991 | 					console.error(`${this.#projectName}'s setData function can't be used for the type "${type}". The data can't be taken.`);
 992 | 				}
 993 | 
 994 | 			} else {
 995 | 				console.warn(`${this.#projectName}'s setData function did not find any matches for the type "${type}". The event could not be made.`);
 996 | 			}
 997 | 
 998 | 		} else {
 999 | 			console.warn(`The input name "${name}" is invalid for ${this.#projectName}'s setData function. The event could not be made.`);
1000 | 		}
1001 | 	}
1002 | };


--------------------------------------------------------------------------------
/tampermonkey script/content/chessboard.css:
--------------------------------------------------------------------------------
 1 | /*! chessboard.js v1.0.0 | (c) 2019 Chris Oakman | MIT License chessboardjs.com/license */
 2 | 
 3 | .clearfix-7da63 {
 4 |   clear: both;
 5 | }
 6 | 
 7 | .board-b72b1 {
 8 |   border: 2px solid #404040;
 9 |   box-sizing: content-box;
10 | }
11 | 
12 | .square-55d63 {
13 |   float: left;
14 |   position: relative;
15 | 
16 |   /* disable any native browser highlighting */
17 |   -webkit-touch-callout: none;
18 |     -webkit-user-select: none;
19 |      -khtml-user-select: none;
20 |        -moz-user-select: none;
21 |         -ms-user-select: none;
22 |             user-select: none;
23 | }
24 | 
25 | .white-1e1d7 {
26 |   background-color: #f0d9b5;
27 |   color: #b58863;
28 | }
29 | 
30 | .black-3c85d {
31 |   background-color: #b58863;
32 |   color: #f0d9b5;
33 | }
34 | 
35 | .highlight1-32417, .highlight2-9c5d2 {
36 |   box-shadow: inset 0 0 3px 3px yellow;
37 | }
38 | 
39 | .notation-322f9 {
40 |   cursor: default;
41 |   font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
42 |   font-size: 14px;
43 |   position: absolute;
44 | }
45 | 
46 | .alpha-d2270 {
47 |   bottom: 1px;
48 |   right: 3px;
49 | }
50 | 
51 | .numeric-fc462 {
52 |   top: 2px;
53 |   left: 2px;
54 | }
55 | 


--------------------------------------------------------------------------------
/tampermonkey script/content/chessboard.js:
--------------------------------------------------------------------------------
   1 | // chessboard.js v1.0.0
   2 | // https://github.com/oakmac/chessboardjs/
   3 | //
   4 | // Copyright (c) 2019, Chris Oakman
   5 | // Released under the MIT license
   6 | // https://github.com/oakmac/chessboardjs/blob/master/LICENSE.md
   7 | 
   8 | // start anonymous scope
   9 | ;(function () {
  10 |   'use strict'
  11 | 
  12 |   var $ = window['jQuery']
  13 | 
  14 |   // ---------------------------------------------------------------------------
  15 |   // Constants
  16 |   // ---------------------------------------------------------------------------
  17 | 
  18 |   var COLUMNS = 'abcdefgh'.split('')
  19 |   var DEFAULT_DRAG_THROTTLE_RATE = 20
  20 |   var ELLIPSIS = '…'
  21 |   var MINIMUM_JQUERY_VERSION = '1.8.3'
  22 |   var RUN_ASSERTS = false
  23 |   var START_FEN = 'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR'
  24 |   var START_POSITION = fenToObj(START_FEN)
  25 | 
  26 |   // default animation speeds
  27 |   var DEFAULT_APPEAR_SPEED = 200
  28 |   var DEFAULT_MOVE_SPEED = 200
  29 |   var DEFAULT_SNAPBACK_SPEED = 60
  30 |   var DEFAULT_SNAP_SPEED = 30
  31 |   var DEFAULT_TRASH_SPEED = 100
  32 | 
  33 |   // use unique class names to prevent clashing with anything else on the page
  34 |   // and simplify selectors
  35 |   // NOTE: these should never change
  36 |   var CSS = {}
  37 |   CSS['alpha'] = 'alpha-d2270'
  38 |   CSS['black'] = 'black-3c85d'
  39 |   CSS['board'] = 'board-b72b1'
  40 |   CSS['chessboard'] = 'chessboard-63f37'
  41 |   CSS['clearfix'] = 'clearfix-7da63'
  42 |   CSS['highlight1'] = 'highlight1-32417'
  43 |   CSS['highlight2'] = 'highlight2-9c5d2'
  44 |   CSS['notation'] = 'notation-322f9'
  45 |   CSS['numeric'] = 'numeric-fc462'
  46 |   CSS['piece'] = 'piece-417db'
  47 |   CSS['row'] = 'row-5277c'
  48 |   CSS['sparePieces'] = 'spare-pieces-7492f'
  49 |   CSS['sparePiecesBottom'] = 'spare-pieces-bottom-ae20f'
  50 |   CSS['sparePiecesTop'] = 'spare-pieces-top-4028b'
  51 |   CSS['square'] = 'square-55d63'
  52 |   CSS['white'] = 'white-1e1d7'
  53 | 
  54 |   // ---------------------------------------------------------------------------
  55 |   // Misc Util Functions
  56 |   // ---------------------------------------------------------------------------
  57 | 
  58 |   function throttle (f, interval, scope) {
  59 |     var timeout = 0
  60 |     var shouldFire = false
  61 |     var args = []
  62 | 
  63 |     var handleTimeout = function () {
  64 |       timeout = 0
  65 |       if (shouldFire) {
  66 |         shouldFire = false
  67 |         fire()
  68 |       }
  69 |     }
  70 | 
  71 |     var fire = function () {
  72 |       timeout = window.setTimeout(handleTimeout, interval)
  73 |       f.apply(scope, args)
  74 |     }
  75 | 
  76 |     return function (_args) {
  77 |       args = arguments
  78 |       if (!timeout) {
  79 |         fire()
  80 |       } else {
  81 |         shouldFire = true
  82 |       }
  83 |     }
  84 |   }
  85 | 
  86 |   // function debounce (f, interval, scope) {
  87 |   //   var timeout = 0
  88 |   //   return function (_args) {
  89 |   //     window.clearTimeout(timeout)
  90 |   //     var args = arguments
  91 |   //     timeout = window.setTimeout(function () {
  92 |   //       f.apply(scope, args)
  93 |   //     }, interval)
  94 |   //   }
  95 |   // }
  96 | 
  97 |   function uuid () {
  98 |     return 'xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx'.replace(/x/g, function (c) {
  99 |       var r = (Math.random() * 16) | 0
 100 |       return r.toString(16)
 101 |     })
 102 |   }
 103 | 
 104 |   function deepCopy (thing) {
 105 |     return JSON.parse(JSON.stringify(thing))
 106 |   }
 107 | 
 108 |   function parseSemVer (version) {
 109 |     var tmp = version.split('.')
 110 |     return {
 111 |       major: parseInt(tmp[0], 10),
 112 |       minor: parseInt(tmp[1], 10),
 113 |       patch: parseInt(tmp[2], 10)
 114 |     }
 115 |   }
 116 | 
 117 |   // returns true if version is >= minimum
 118 |   function validSemanticVersion (version, minimum) {
 119 |     version = parseSemVer(version)
 120 |     minimum = parseSemVer(minimum)
 121 | 
 122 |     var versionNum = (version.major * 100000 * 100000) +
 123 |                      (version.minor * 100000) +
 124 |                      version.patch
 125 |     var minimumNum = (minimum.major * 100000 * 100000) +
 126 |                      (minimum.minor * 100000) +
 127 |                      minimum.patch
 128 | 
 129 |     return versionNum >= minimumNum
 130 |   }
 131 | 
 132 |   function interpolateTemplate (str, obj) {
 133 |     for (var key in obj) {
 134 |       if (!obj.hasOwnProperty(key)) continue
 135 |       var keyTemplateStr = '{' + key + '}'
 136 |       var value = obj[key]
 137 |       while (str.indexOf(keyTemplateStr) !== -1) {
 138 |         str = str.replace(keyTemplateStr, value)
 139 |       }
 140 |     }
 141 |     return str
 142 |   }
 143 | 
 144 |   if (RUN_ASSERTS) {
 145 |     console.assert(interpolateTemplate('abc', {a: 'x'}) === 'abc')
 146 |     console.assert(interpolateTemplate('{a}bc', {}) === '{a}bc')
 147 |     console.assert(interpolateTemplate('{a}bc', {p: 'q'}) === '{a}bc')
 148 |     console.assert(interpolateTemplate('{a}bc', {a: 'x'}) === 'xbc')
 149 |     console.assert(interpolateTemplate('{a}bc{a}bc', {a: 'x'}) === 'xbcxbc')
 150 |     console.assert(interpolateTemplate('{a}{a}{b}', {a: 'x', b: 'y'}) === 'xxy')
 151 |   }
 152 | 
 153 |   // ---------------------------------------------------------------------------
 154 |   // Predicates
 155 |   // ---------------------------------------------------------------------------
 156 | 
 157 |   function isString (s) {
 158 |     return typeof s === 'string'
 159 |   }
 160 | 
 161 |   function isFunction (f) {
 162 |     return typeof f === 'function'
 163 |   }
 164 | 
 165 |   function isInteger (n) {
 166 |     return typeof n === 'number' &&
 167 |            isFinite(n) &&
 168 |            Math.floor(n) === n
 169 |   }
 170 | 
 171 |   function validAnimationSpeed (speed) {
 172 |     if (speed === 'fast' || speed === 'slow') return true
 173 |     if (!isInteger(speed)) return false
 174 |     return speed >= 0
 175 |   }
 176 | 
 177 |   function validThrottleRate (rate) {
 178 |     return isInteger(rate) &&
 179 |            rate >= 1
 180 |   }
 181 | 
 182 |   function validMove (move) {
 183 |     // move should be a string
 184 |     if (!isString(move)) return false
 185 | 
 186 |     // move should be in the form of "e2-e4", "f6-d5"
 187 |     var squares = move.split('-')
 188 |     if (squares.length !== 2) return false
 189 | 
 190 |     return validSquare(squares[0]) && validSquare(squares[1])
 191 |   }
 192 | 
 193 |   function validSquare (square) {
 194 |     return isString(square) && square.search(/^[a-h][1-8]$/) !== -1
 195 |   }
 196 | 
 197 |   if (RUN_ASSERTS) {
 198 |     console.assert(validSquare('a1'))
 199 |     console.assert(validSquare('e2'))
 200 |     console.assert(!validSquare('D2'))
 201 |     console.assert(!validSquare('g9'))
 202 |     console.assert(!validSquare('a'))
 203 |     console.assert(!validSquare(true))
 204 |     console.assert(!validSquare(null))
 205 |     console.assert(!validSquare({}))
 206 |   }
 207 | 
 208 |   function validPieceCode (code) {
 209 |     return isString(code) && code.search(/^[bw][KQRNBP]$/) !== -1
 210 |   }
 211 | 
 212 |   if (RUN_ASSERTS) {
 213 |     console.assert(validPieceCode('bP'))
 214 |     console.assert(validPieceCode('bK'))
 215 |     console.assert(validPieceCode('wK'))
 216 |     console.assert(validPieceCode('wR'))
 217 |     console.assert(!validPieceCode('WR'))
 218 |     console.assert(!validPieceCode('Wr'))
 219 |     console.assert(!validPieceCode('a'))
 220 |     console.assert(!validPieceCode(true))
 221 |     console.assert(!validPieceCode(null))
 222 |     console.assert(!validPieceCode({}))
 223 |   }
 224 | 
 225 |   function validFen (fen) {
 226 |     if (!isString(fen)) return false
 227 | 
 228 |     // cut off any move, castling, etc info from the end
 229 |     // we're only interested in position information
 230 |     fen = fen.replace(/ .+$/, '')
 231 | 
 232 |     // expand the empty square numbers to just 1s
 233 |     fen = expandFenEmptySquares(fen)
 234 | 
 235 |     // FEN should be 8 sections separated by slashes
 236 |     var chunks = fen.split('/')
 237 |     if (chunks.length !== 8) return false
 238 | 
 239 |     // check each section
 240 |     for (var i = 0; i < 8; i++) {
 241 |       if (chunks[i].length !== 8 ||
 242 |           chunks[i].search(/[^kqrnbpKQRNBP1]/) !== -1) {
 243 |         return false
 244 |       }
 245 |     }
 246 | 
 247 |     return true
 248 |   }
 249 | 
 250 |   if (RUN_ASSERTS) {
 251 |     console.assert(validFen(START_FEN))
 252 |     console.assert(validFen('8/8/8/8/8/8/8/8'))
 253 |     console.assert(validFen('r1bqkbnr/pppp1ppp/2n5/1B2p3/4P3/5N2/PPPP1PPP/RNBQK2R'))
 254 |     console.assert(validFen('3r3r/1p4pp/2nb1k2/pP3p2/8/PB2PN2/p4PPP/R4RK1 b - - 0 1'))
 255 |     console.assert(!validFen('3r3z/1p4pp/2nb1k2/pP3p2/8/PB2PN2/p4PPP/R4RK1 b - - 0 1'))
 256 |     console.assert(!validFen('anbqkbnr/8/8/8/8/8/PPPPPPPP/8'))
 257 |     console.assert(!validFen('rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/'))
 258 |     console.assert(!validFen('rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBN'))
 259 |     console.assert(!validFen('888888/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR'))
 260 |     console.assert(!validFen('888888/pppppppp/74/8/8/8/PPPPPPPP/RNBQKBNR'))
 261 |     console.assert(!validFen({}))
 262 |   }
 263 | 
 264 |   function validPositionObject (pos) {
 265 |     if (!$.isPlainObject(pos)) return false
 266 | 
 267 |     for (var i in pos) {
 268 |       if (!pos.hasOwnProperty(i)) continue
 269 | 
 270 |       if (!validSquare(i) || !validPieceCode(pos[i])) {
 271 |         return false
 272 |       }
 273 |     }
 274 | 
 275 |     return true
 276 |   }
 277 | 
 278 |   if (RUN_ASSERTS) {
 279 |     console.assert(validPositionObject(START_POSITION))
 280 |     console.assert(validPositionObject({}))
 281 |     console.assert(validPositionObject({e2: 'wP'}))
 282 |     console.assert(validPositionObject({e2: 'wP', d2: 'wP'}))
 283 |     console.assert(!validPositionObject({e2: 'BP'}))
 284 |     console.assert(!validPositionObject({y2: 'wP'}))
 285 |     console.assert(!validPositionObject(null))
 286 |     console.assert(!validPositionObject('start'))
 287 |     console.assert(!validPositionObject(START_FEN))
 288 |   }
 289 | 
 290 |   function isTouchDevice () {
 291 |     return 'ontouchstart' in document.documentElement
 292 |   }
 293 | 
 294 |   function validJQueryVersion () {
 295 |     return typeof window.$ &&
 296 |            $.fn &&
 297 |            $.fn.jquery &&
 298 |            validSemanticVersion($.fn.jquery, MINIMUM_JQUERY_VERSION)
 299 |   }
 300 | 
 301 |   // ---------------------------------------------------------------------------
 302 |   // Chess Util Functions
 303 |   // ---------------------------------------------------------------------------
 304 | 
 305 |   // convert FEN piece code to bP, wK, etc
 306 |   function fenToPieceCode (piece) {
 307 |     // black piece
 308 |     if (piece.toLowerCase() === piece) {
 309 |       return 'b' + piece.toUpperCase()
 310 |     }
 311 | 
 312 |     // white piece
 313 |     return 'w' + piece.toUpperCase()
 314 |   }
 315 | 
 316 |   // convert bP, wK, etc code to FEN structure
 317 |   function pieceCodeToFen (piece) {
 318 |     var pieceCodeLetters = piece.split('')
 319 | 
 320 |     // white piece
 321 |     if (pieceCodeLetters[0] === 'w') {
 322 |       return pieceCodeLetters[1].toUpperCase()
 323 |     }
 324 | 
 325 |     // black piece
 326 |     return pieceCodeLetters[1].toLowerCase()
 327 |   }
 328 | 
 329 |   // convert FEN string to position object
 330 |   // returns false if the FEN string is invalid
 331 |   function fenToObj (fen) {
 332 |     if (!validFen(fen)) return false
 333 | 
 334 |     // cut off any move, castling, etc info from the end
 335 |     // we're only interested in position information
 336 |     fen = fen.replace(/ .+$/, '')
 337 | 
 338 |     var rows = fen.split('/')
 339 |     var position = {}
 340 | 
 341 |     var currentRow = 8
 342 |     for (var i = 0; i < 8; i++) {
 343 |       var row = rows[i].split('')
 344 |       var colIdx = 0
 345 | 
 346 |       // loop through each character in the FEN section
 347 |       for (var j = 0; j < row.length; j++) {
 348 |         // number / empty squares
 349 |         if (row[j].search(/[1-8]/) !== -1) {
 350 |           var numEmptySquares = parseInt(row[j], 10)
 351 |           colIdx = colIdx + numEmptySquares
 352 |         } else {
 353 |           // piece
 354 |           var square = COLUMNS[colIdx] + currentRow
 355 |           position[square] = fenToPieceCode(row[j])
 356 |           colIdx = colIdx + 1
 357 |         }
 358 |       }
 359 | 
 360 |       currentRow = currentRow - 1
 361 |     }
 362 | 
 363 |     return position
 364 |   }
 365 | 
 366 |   // position object to FEN string
 367 |   // returns false if the obj is not a valid position object
 368 |   function objToFen (obj) {
 369 |     if (!validPositionObject(obj)) return false
 370 | 
 371 |     var fen = ''
 372 | 
 373 |     var currentRow = 8
 374 |     for (var i = 0; i < 8; i++) {
 375 |       for (var j = 0; j < 8; j++) {
 376 |         var square = COLUMNS[j] + currentRow
 377 | 
 378 |         // piece exists
 379 |         if (obj.hasOwnProperty(square)) {
 380 |           fen = fen + pieceCodeToFen(obj[square])
 381 |         } else {
 382 |           // empty space
 383 |           fen = fen + '1'
 384 |         }
 385 |       }
 386 | 
 387 |       if (i !== 7) {
 388 |         fen = fen + '/'
 389 |       }
 390 | 
 391 |       currentRow = currentRow - 1
 392 |     }
 393 | 
 394 |     // squeeze the empty numbers together
 395 |     fen = squeezeFenEmptySquares(fen)
 396 | 
 397 |     return fen
 398 |   }
 399 | 
 400 |   if (RUN_ASSERTS) {
 401 |     console.assert(objToFen(START_POSITION) === START_FEN)
 402 |     console.assert(objToFen({}) === '8/8/8/8/8/8/8/8')
 403 |     console.assert(objToFen({a2: 'wP', 'b2': 'bP'}) === '8/8/8/8/8/8/Pp6/8')
 404 |   }
 405 | 
 406 |   function squeezeFenEmptySquares (fen) {
 407 |     return fen.replace(/11111111/g, '8')
 408 |       .replace(/1111111/g, '7')
 409 |       .replace(/111111/g, '6')
 410 |       .replace(/11111/g, '5')
 411 |       .replace(/1111/g, '4')
 412 |       .replace(/111/g, '3')
 413 |       .replace(/11/g, '2')
 414 |   }
 415 | 
 416 |   function expandFenEmptySquares (fen) {
 417 |     return fen.replace(/8/g, '11111111')
 418 |       .replace(/7/g, '1111111')
 419 |       .replace(/6/g, '111111')
 420 |       .replace(/5/g, '11111')
 421 |       .replace(/4/g, '1111')
 422 |       .replace(/3/g, '111')
 423 |       .replace(/2/g, '11')
 424 |   }
 425 | 
 426 |   // returns the distance between two squares
 427 |   function squareDistance (squareA, squareB) {
 428 |     var squareAArray = squareA.split('')
 429 |     var squareAx = COLUMNS.indexOf(squareAArray[0]) + 1
 430 |     var squareAy = parseInt(squareAArray[1], 10)
 431 | 
 432 |     var squareBArray = squareB.split('')
 433 |     var squareBx = COLUMNS.indexOf(squareBArray[0]) + 1
 434 |     var squareBy = parseInt(squareBArray[1], 10)
 435 | 
 436 |     var xDelta = Math.abs(squareAx - squareBx)
 437 |     var yDelta = Math.abs(squareAy - squareBy)
 438 | 
 439 |     if (xDelta >= yDelta) return xDelta
 440 |     return yDelta
 441 |   }
 442 | 
 443 |   // returns the square of the closest instance of piece
 444 |   // returns false if no instance of piece is found in position
 445 |   function findClosestPiece (position, piece, square) {
 446 |     // create array of closest squares from square
 447 |     var closestSquares = createRadius(square)
 448 | 
 449 |     // search through the position in order of distance for the piece
 450 |     for (var i = 0; i < closestSquares.length; i++) {
 451 |       var s = closestSquares[i]
 452 | 
 453 |       if (position.hasOwnProperty(s) && position[s] === piece) {
 454 |         return s
 455 |       }
 456 |     }
 457 | 
 458 |     return false
 459 |   }
 460 | 
 461 |   // returns an array of closest squares from square
 462 |   function createRadius (square) {
 463 |     var squares = []
 464 | 
 465 |     // calculate distance of all squares
 466 |     for (var i = 0; i < 8; i++) {
 467 |       for (var j = 0; j < 8; j++) {
 468 |         var s = COLUMNS[i] + (j + 1)
 469 | 
 470 |         // skip the square we're starting from
 471 |         if (square === s) continue
 472 | 
 473 |         squares.push({
 474 |           square: s,
 475 |           distance: squareDistance(square, s)
 476 |         })
 477 |       }
 478 |     }
 479 | 
 480 |     // sort by distance
 481 |     squares.sort(function (a, b) {
 482 |       return a.distance - b.distance
 483 |     })
 484 | 
 485 |     // just return the square code
 486 |     var surroundingSquares = []
 487 |     for (i = 0; i < squares.length; i++) {
 488 |       surroundingSquares.push(squares[i].square)
 489 |     }
 490 | 
 491 |     return surroundingSquares
 492 |   }
 493 | 
 494 |   // given a position and a set of moves, return a new position
 495 |   // with the moves executed
 496 |   function calculatePositionFromMoves (position, moves) {
 497 |     var newPosition = deepCopy(position)
 498 | 
 499 |     for (var i in moves) {
 500 |       if (!moves.hasOwnProperty(i)) continue
 501 | 
 502 |       // skip the move if the position doesn't have a piece on the source square
 503 |       if (!newPosition.hasOwnProperty(i)) continue
 504 | 
 505 |       var piece = newPosition[i]
 506 |       delete newPosition[i]
 507 |       newPosition[moves[i]] = piece
 508 |     }
 509 | 
 510 |     return newPosition
 511 |   }
 512 | 
 513 |   // TODO: add some asserts here for calculatePositionFromMoves
 514 | 
 515 |   // ---------------------------------------------------------------------------
 516 |   // HTML
 517 |   // ---------------------------------------------------------------------------
 518 | 
 519 |   function buildContainerHTML (hasSparePieces) {
 520 |     var html = '<div class="{chessboard}">'
 521 | 
 522 |     if (hasSparePieces) {
 523 |       html += '<div class="{sparePieces} {sparePiecesTop}"></div>'
 524 |     }
 525 | 
 526 |     html += '<div class="{board}"></div>'
 527 | 
 528 |     if (hasSparePieces) {
 529 |       html += '<div class="{sparePieces} {sparePiecesBottom}"></div>'
 530 |     }
 531 | 
 532 |     html += '</div>'
 533 | 
 534 |     return interpolateTemplate(html, CSS)
 535 |   }
 536 | 
 537 |   // ---------------------------------------------------------------------------
 538 |   // Config
 539 |   // ---------------------------------------------------------------------------
 540 | 
 541 |   function expandConfigArgumentShorthand (config) {
 542 |     if (config === 'start') {
 543 |       config = {position: deepCopy(START_POSITION)}
 544 |     } else if (validFen(config)) {
 545 |       config = {position: fenToObj(config)}
 546 |     } else if (validPositionObject(config)) {
 547 |       config = {position: deepCopy(config)}
 548 |     }
 549 | 
 550 |     // config must be an object
 551 |     if (!$.isPlainObject(config)) config = {}
 552 | 
 553 |     return config
 554 |   }
 555 | 
 556 |   // validate config / set default options
 557 |   function expandConfig (config) {
 558 |     // default for orientation is white
 559 |     if (config.orientation !== 'black') config.orientation = 'white'
 560 | 
 561 |     // default for showNotation is true
 562 |     if (config.showNotation !== false) config.showNotation = true
 563 | 
 564 |     // default for draggable is false
 565 |     if (config.draggable !== true) config.draggable = false
 566 | 
 567 |     // default for dropOffBoard is 'snapback'
 568 |     if (config.dropOffBoard !== 'trash') config.dropOffBoard = 'snapback'
 569 | 
 570 |     // default for sparePieces is false
 571 |     if (config.sparePieces !== true) config.sparePieces = false
 572 | 
 573 |     // draggable must be true if sparePieces is enabled
 574 |     if (config.sparePieces) config.draggable = true
 575 | 
 576 |     // default piece theme is wikipedia
 577 |     if (!config.hasOwnProperty('pieceTheme') ||
 578 |         (!isString(config.pieceTheme) && !isFunction(config.pieceTheme))) {
 579 |       config.pieceTheme = 'img/chesspieces/wikipedia/{piece}.png'
 580 |     }
 581 | 
 582 |     // animation speeds
 583 |     if (!validAnimationSpeed(config.appearSpeed)) config.appearSpeed = DEFAULT_APPEAR_SPEED
 584 |     if (!validAnimationSpeed(config.moveSpeed)) config.moveSpeed = DEFAULT_MOVE_SPEED
 585 |     if (!validAnimationSpeed(config.snapbackSpeed)) config.snapbackSpeed = DEFAULT_SNAPBACK_SPEED
 586 |     if (!validAnimationSpeed(config.snapSpeed)) config.snapSpeed = DEFAULT_SNAP_SPEED
 587 |     if (!validAnimationSpeed(config.trashSpeed)) config.trashSpeed = DEFAULT_TRASH_SPEED
 588 | 
 589 |     // throttle rate
 590 |     if (!validThrottleRate(config.dragThrottleRate)) config.dragThrottleRate = DEFAULT_DRAG_THROTTLE_RATE
 591 | 
 592 |     return config
 593 |   }
 594 | 
 595 |   // ---------------------------------------------------------------------------
 596 |   // Dependencies
 597 |   // ---------------------------------------------------------------------------
 598 | 
 599 |   // check for a compatible version of jQuery
 600 |   function checkJQuery () {
 601 |     if (!validJQueryVersion()) {
 602 |       var errorMsg = 'Chessboard Error 1005: Unable to find a valid version of jQuery. ' +
 603 |         'Please include jQuery ' + MINIMUM_JQUERY_VERSION + ' or higher on the page' +
 604 |         '\n\n' +
 605 |         'Exiting' + ELLIPSIS
 606 |       window.alert(errorMsg)
 607 |       return false
 608 |     }
 609 | 
 610 |     return true
 611 |   }
 612 | 
 613 |   // return either boolean false or the $container element
 614 |   function checkContainerArg (containerElOrString) {
 615 |     if (containerElOrString === '') {
 616 |       var errorMsg1 = 'Chessboard Error 1001: ' +
 617 |         'The first argument to Chessboard() cannot be an empty string.' +
 618 |         '\n\n' +
 619 |         'Exiting' + ELLIPSIS
 620 |       window.alert(errorMsg1)
 621 |       return false
 622 |     }
 623 | 
 624 |     // convert containerEl to query selector if it is a string
 625 |     if (isString(containerElOrString) &&
 626 |         containerElOrString.charAt(0) !== '#') {
 627 |       containerElOrString = '#' + containerElOrString
 628 |     }
 629 | 
 630 |     // containerEl must be something that becomes a jQuery collection of size 1
 631 |     var $container = $(containerElOrString)
 632 |     if ($container.length !== 1) {
 633 |       var errorMsg2 = 'Chessboard Error 1003: ' +
 634 |         'The first argument to Chessboard() must be the ID of a DOM node, ' +
 635 |         'an ID query selector, or a single DOM node.' +
 636 |         '\n\n' +
 637 |         'Exiting' + ELLIPSIS
 638 |       window.alert(errorMsg2)
 639 |       return false
 640 |     }
 641 | 
 642 |     return $container
 643 |   }
 644 | 
 645 |   // ---------------------------------------------------------------------------
 646 |   // Constructor
 647 |   // ---------------------------------------------------------------------------
 648 | 
 649 |   function constructor (containerElOrString, config) {
 650 |     // first things first: check basic dependencies
 651 |     if (!checkJQuery()) return null
 652 |     var $container = checkContainerArg(containerElOrString)
 653 |     if (!$container) return null
 654 | 
 655 |     // ensure the config object is what we expect
 656 |     config = expandConfigArgumentShorthand(config)
 657 |     config = expandConfig(config)
 658 | 
 659 |     // DOM elements
 660 |     var $board = null
 661 |     var $draggedPiece = null
 662 |     var $sparePiecesTop = null
 663 |     var $sparePiecesBottom = null
 664 | 
 665 |     // constructor return object
 666 |     var widget = {}
 667 | 
 668 |     // -------------------------------------------------------------------------
 669 |     // Stateful
 670 |     // -------------------------------------------------------------------------
 671 | 
 672 |     var boardBorderSize = 2
 673 |     var currentOrientation = 'white'
 674 |     var currentPosition = {}
 675 |     var draggedPiece = null
 676 |     var draggedPieceLocation = null
 677 |     var draggedPieceSource = null
 678 |     var isDragging = false
 679 |     var sparePiecesElsIds = {}
 680 |     var squareElsIds = {}
 681 |     var squareElsOffsets = {}
 682 |     var squareSize = 16
 683 | 
 684 |     // -------------------------------------------------------------------------
 685 |     // Validation / Errors
 686 |     // -------------------------------------------------------------------------
 687 | 
 688 |     function error (code, msg, obj) {
 689 |       // do nothing if showErrors is not set
 690 |       if (
 691 |         config.hasOwnProperty('showErrors') !== true ||
 692 |           config.showErrors === false
 693 |       ) {
 694 |         return
 695 |       }
 696 | 
 697 |       var errorText = 'Chessboard Error ' + code + ': ' + msg
 698 | 
 699 |       // print to console
 700 |       if (
 701 |         config.showErrors === 'console' &&
 702 |           typeof console === 'object' &&
 703 |           typeof console.log === 'function'
 704 |       ) {
 705 |         console.log(errorText)
 706 |         if (arguments.length >= 2) {
 707 |           console.log(obj)
 708 |         }
 709 |         return
 710 |       }
 711 | 
 712 |       // alert errors
 713 |       if (config.showErrors === 'alert') {
 714 |         if (obj) {
 715 |           errorText += '\n\n' + JSON.stringify(obj)
 716 |         }
 717 |         window.alert(errorText)
 718 |         return
 719 |       }
 720 | 
 721 |       // custom function
 722 |       if (isFunction(config.showErrors)) {
 723 |         config.showErrors(code, msg, obj)
 724 |       }
 725 |     }
 726 | 
 727 |     function setInitialState () {
 728 |       currentOrientation = config.orientation
 729 | 
 730 |       // make sure position is valid
 731 |       if (config.hasOwnProperty('position')) {
 732 |         if (config.position === 'start') {
 733 |           currentPosition = deepCopy(START_POSITION)
 734 |         } else if (validFen(config.position)) {
 735 |           currentPosition = fenToObj(config.position)
 736 |         } else if (validPositionObject(config.position)) {
 737 |           currentPosition = deepCopy(config.position)
 738 |         } else {
 739 |           error(
 740 |             7263,
 741 |             'Invalid value passed to config.position.',
 742 |             config.position
 743 |           )
 744 |         }
 745 |       }
 746 |     }
 747 | 
 748 |     // -------------------------------------------------------------------------
 749 |     // DOM Misc
 750 |     // -------------------------------------------------------------------------
 751 | 
 752 |     // calculates square size based on the width of the container
 753 |     // got a little CSS black magic here, so let me explain:
 754 |     // get the width of the container element (could be anything), reduce by 1 for
 755 |     // fudge factor, and then keep reducing until we find an exact mod 8 for
 756 |     // our square size
 757 |     function calculateSquareSize () {
 758 |       var containerWidth = parseInt($container.width(), 10)
 759 | 
 760 |       // defensive, prevent infinite loop
 761 |       if (!containerWidth || containerWidth <= 0) {
 762 |         return 0
 763 |       }
 764 | 
 765 |       // pad one pixel
 766 |       var boardWidth = containerWidth - 1
 767 | 
 768 |       while (boardWidth % 8 !== 0 && boardWidth > 0) {
 769 |         boardWidth = boardWidth - 1
 770 |       }
 771 | 
 772 |       return boardWidth / 8
 773 |     }
 774 | 
 775 |     // create random IDs for elements
 776 |     function createElIds () {
 777 |       // squares on the board
 778 |       for (var i = 0; i < COLUMNS.length; i++) {
 779 |         for (var j = 1; j <= 8; j++) {
 780 |           var square = COLUMNS[i] + j
 781 |           squareElsIds[square] = square + '-' + uuid()
 782 |         }
 783 |       }
 784 | 
 785 |       // spare pieces
 786 |       var pieces = 'KQRNBP'.split('')
 787 |       for (i = 0; i < pieces.length; i++) {
 788 |         var whitePiece = 'w' + pieces[i]
 789 |         var blackPiece = 'b' + pieces[i]
 790 |         sparePiecesElsIds[whitePiece] = whitePiece + '-' + uuid()
 791 |         sparePiecesElsIds[blackPiece] = blackPiece + '-' + uuid()
 792 |       }
 793 |     }
 794 | 
 795 |     // -------------------------------------------------------------------------
 796 |     // Markup Building
 797 |     // -------------------------------------------------------------------------
 798 | 
 799 |     function buildBoardHTML (orientation) {
 800 |       if (orientation !== 'black') {
 801 |         orientation = 'white'
 802 |       }
 803 | 
 804 |       var html = ''
 805 | 
 806 |       // algebraic notation / orientation
 807 |       var alpha = deepCopy(COLUMNS)
 808 |       var row = 8
 809 |       if (orientation === 'black') {
 810 |         alpha.reverse()
 811 |         row = 1
 812 |       }
 813 | 
 814 |       var squareColor = 'white'
 815 |       for (var i = 0; i < 8; i++) {
 816 |         html += '<div class="{row}">'
 817 |         for (var j = 0; j < 8; j++) {
 818 |           var square = alpha[j] + row
 819 | 
 820 |           html += '<div class="{square} ' + CSS[squareColor] + ' ' +
 821 |             'square-' + square + '" ' +
 822 |             'style="width:' + squareSize + 'px;height:' + squareSize + 'px;" ' +
 823 |             'id="' + squareElsIds[square] + '" ' +
 824 |             'data-square="' + square + '">'
 825 | 
 826 |           if (config.showNotation) {
 827 |             // alpha notation
 828 |             if ((orientation === 'white' && row === 1) ||
 829 |                 (orientation === 'black' && row === 8)) {
 830 |               html += '<div class="{notation} {alpha}">' + alpha[j] + '</div>'
 831 |             }
 832 | 
 833 |             // numeric notation
 834 |             if (j === 0) {
 835 |               html += '<div class="{notation} {numeric}">' + row + '</div>'
 836 |             }
 837 |           }
 838 | 
 839 |           html += '</div>' // end .square
 840 | 
 841 |           squareColor = (squareColor === 'white') ? 'black' : 'white'
 842 |         }
 843 |         html += '<div class="{clearfix}"></div></div>'
 844 | 
 845 |         squareColor = (squareColor === 'white') ? 'black' : 'white'
 846 | 
 847 |         if (orientation === 'white') {
 848 |           row = row - 1
 849 |         } else {
 850 |           row = row + 1
 851 |         }
 852 |       }
 853 | 
 854 |       return interpolateTemplate(html, CSS)
 855 |     }
 856 | 
 857 |     function buildPieceImgSrc (piece) {
 858 |       if (isFunction(config.pieceTheme)) {
 859 |         return config.pieceTheme(piece)
 860 |       }
 861 | 
 862 |       if (isString(config.pieceTheme)) {
 863 |         return interpolateTemplate(config.pieceTheme, {piece: piece})
 864 |       }
 865 | 
 866 |       // NOTE: this should never happen
 867 |       error(8272, 'Unable to build image source for config.pieceTheme.')
 868 |       return ''
 869 |     }
 870 | 
 871 |     function buildPieceHTML (piece, hidden, id) {
 872 |       var html = '<img src="' + buildPieceImgSrc(piece) + '" '
 873 |       if (isString(id) && id !== '') {
 874 |         html += 'id="' + id + '" '
 875 |       }
 876 |       html += 'alt="" ' +
 877 |         'class="{piece}" ' +
 878 |         'data-piece="' + piece + '" ' +
 879 |         'style="width:' + squareSize + 'px;' + 'height:' + squareSize + 'px;'
 880 | 
 881 |       if (hidden) {
 882 |         html += 'display:none;'
 883 |       }
 884 | 
 885 |       html += '" />'
 886 | 
 887 |       return interpolateTemplate(html, CSS)
 888 |     }
 889 | 
 890 |     function buildSparePiecesHTML (color) {
 891 |       var pieces = ['wK', 'wQ', 'wR', 'wB', 'wN', 'wP']
 892 |       if (color === 'black') {
 893 |         pieces = ['bK', 'bQ', 'bR', 'bB', 'bN', 'bP']
 894 |       }
 895 | 
 896 |       var html = ''
 897 |       for (var i = 0; i < pieces.length; i++) {
 898 |         html += buildPieceHTML(pieces[i], false, sparePiecesElsIds[pieces[i]])
 899 |       }
 900 | 
 901 |       return html
 902 |     }
 903 | 
 904 |     // -------------------------------------------------------------------------
 905 |     // Animations
 906 |     // -------------------------------------------------------------------------
 907 | 
 908 |     function animateSquareToSquare (src, dest, piece, completeFn) {
 909 |       // get information about the source and destination squares
 910 |       var $srcSquare = $('#' + squareElsIds[src])
 911 |       var srcSquarePosition = $srcSquare.offset()
 912 |       var $destSquare = $('#' + squareElsIds[dest])
 913 |       var destSquarePosition = $destSquare.offset()
 914 | 
 915 |       // create the animated piece and absolutely position it
 916 |       // over the source square
 917 |       var animatedPieceId = uuid()
 918 |       $('body').append(buildPieceHTML(piece, true, animatedPieceId))
 919 |       var $animatedPiece = $('#' + animatedPieceId)
 920 |       $animatedPiece.css({
 921 |         display: '',
 922 |         position: 'absolute',
 923 |         top: srcSquarePosition.top,
 924 |         left: srcSquarePosition.left
 925 |       })
 926 | 
 927 |       // remove original piece from source square
 928 |       $srcSquare.find('.' + CSS.piece).remove()
 929 | 
 930 |       function onFinishAnimation1 () {
 931 |         // add the "real" piece to the destination square
 932 |         $destSquare.append(buildPieceHTML(piece))
 933 | 
 934 |         // remove the animated piece
 935 |         $animatedPiece.remove()
 936 | 
 937 |         // run complete function
 938 |         if (isFunction(completeFn)) {
 939 |           completeFn()
 940 |         }
 941 |       }
 942 | 
 943 |       // animate the piece to the destination square
 944 |       var opts = {
 945 |         duration: config.moveSpeed,
 946 |         complete: onFinishAnimation1
 947 |       }
 948 |       $animatedPiece.animate(destSquarePosition, opts)
 949 |     }
 950 | 
 951 |     function animateSparePieceToSquare (piece, dest, completeFn) {
 952 |       var srcOffset = $('#' + sparePiecesElsIds[piece]).offset()
 953 |       var $destSquare = $('#' + squareElsIds[dest])
 954 |       var destOffset = $destSquare.offset()
 955 | 
 956 |       // create the animate piece
 957 |       var pieceId = uuid()
 958 |       $('body').append(buildPieceHTML(piece, true, pieceId))
 959 |       var $animatedPiece = $('#' + pieceId)
 960 |       $animatedPiece.css({
 961 |         display: '',
 962 |         position: 'absolute',
 963 |         left: srcOffset.left,
 964 |         top: srcOffset.top
 965 |       })
 966 | 
 967 |       // on complete
 968 |       function onFinishAnimation2 () {
 969 |         // add the "real" piece to the destination square
 970 |         $destSquare.find('.' + CSS.piece).remove()
 971 |         $destSquare.append(buildPieceHTML(piece))
 972 | 
 973 |         // remove the animated piece
 974 |         $animatedPiece.remove()
 975 | 
 976 |         // run complete function
 977 |         if (isFunction(completeFn)) {
 978 |           completeFn()
 979 |         }
 980 |       }
 981 | 
 982 |       // animate the piece to the destination square
 983 |       var opts = {
 984 |         duration: config.moveSpeed,
 985 |         complete: onFinishAnimation2
 986 |       }
 987 |       $animatedPiece.animate(destOffset, opts)
 988 |     }
 989 | 
 990 |     // execute an array of animations
 991 |     function doAnimations (animations, oldPos, newPos) {
 992 |       if (animations.length === 0) return
 993 | 
 994 |       var numFinished = 0
 995 |       function onFinishAnimation3 () {
 996 |         // exit if all the animations aren't finished
 997 |         numFinished = numFinished + 1
 998 |         if (numFinished !== animations.length) return
 999 | 
1000 |         drawPositionInstant()
1001 | 
1002 |         // run their onMoveEnd function
1003 |         if (isFunction(config.onMoveEnd)) {
1004 |           config.onMoveEnd(deepCopy(oldPos), deepCopy(newPos))
1005 |         }
1006 |       }
1007 | 
1008 |       for (var i = 0; i < animations.length; i++) {
1009 |         var animation = animations[i]
1010 | 
1011 |         // clear a piece
1012 |         if (animation.type === 'clear') {
1013 |           $('#' + squareElsIds[animation.square] + ' .' + CSS.piece)
1014 |             .fadeOut(config.trashSpeed, onFinishAnimation3)
1015 | 
1016 |         // add a piece with no spare pieces - fade the piece onto the square
1017 |         } else if (animation.type === 'add' && !config.sparePieces) {
1018 |           $('#' + squareElsIds[animation.square])
1019 |             .append(buildPieceHTML(animation.piece, true))
1020 |             .find('.' + CSS.piece)
1021 |             .fadeIn(config.appearSpeed, onFinishAnimation3)
1022 | 
1023 |         // add a piece with spare pieces - animate from the spares
1024 |         } else if (animation.type === 'add' && config.sparePieces) {
1025 |           animateSparePieceToSquare(animation.piece, animation.square, onFinishAnimation3)
1026 | 
1027 |         // move a piece from squareA to squareB
1028 |         } else if (animation.type === 'move') {
1029 |           animateSquareToSquare(animation.source, animation.destination, animation.piece, onFinishAnimation3)
1030 |         }
1031 |       }
1032 |     }
1033 | 
1034 |     // calculate an array of animations that need to happen in order to get
1035 |     // from pos1 to pos2
1036 |     function calculateAnimations (pos1, pos2) {
1037 |       // make copies of both
1038 |       pos1 = deepCopy(pos1)
1039 |       pos2 = deepCopy(pos2)
1040 | 
1041 |       var animations = []
1042 |       var squaresMovedTo = {}
1043 | 
1044 |       // remove pieces that are the same in both positions
1045 |       for (var i in pos2) {
1046 |         if (!pos2.hasOwnProperty(i)) continue
1047 | 
1048 |         if (pos1.hasOwnProperty(i) && pos1[i] === pos2[i]) {
1049 |           delete pos1[i]
1050 |           delete pos2[i]
1051 |         }
1052 |       }
1053 | 
1054 |       // find all the "move" animations
1055 |       for (i in pos2) {
1056 |         if (!pos2.hasOwnProperty(i)) continue
1057 | 
1058 |         var closestPiece = findClosestPiece(pos1, pos2[i], i)
1059 |         if (closestPiece) {
1060 |           animations.push({
1061 |             type: 'move',
1062 |             source: closestPiece,
1063 |             destination: i,
1064 |             piece: pos2[i]
1065 |           })
1066 | 
1067 |           delete pos1[closestPiece]
1068 |           delete pos2[i]
1069 |           squaresMovedTo[i] = true
1070 |         }
1071 |       }
1072 | 
1073 |       // "add" animations
1074 |       for (i in pos2) {
1075 |         if (!pos2.hasOwnProperty(i)) continue
1076 | 
1077 |         animations.push({
1078 |           type: 'add',
1079 |           square: i,
1080 |           piece: pos2[i]
1081 |         })
1082 | 
1083 |         delete pos2[i]
1084 |       }
1085 | 
1086 |       // "clear" animations
1087 |       for (i in pos1) {
1088 |         if (!pos1.hasOwnProperty(i)) continue
1089 | 
1090 |         // do not clear a piece if it is on a square that is the result
1091 |         // of a "move", ie: a piece capture
1092 |         if (squaresMovedTo.hasOwnProperty(i)) continue
1093 | 
1094 |         animations.push({
1095 |           type: 'clear',
1096 |           square: i,
1097 |           piece: pos1[i]
1098 |         })
1099 | 
1100 |         delete pos1[i]
1101 |       }
1102 | 
1103 |       return animations
1104 |     }
1105 | 
1106 |     // -------------------------------------------------------------------------
1107 |     // Control Flow
1108 |     // -------------------------------------------------------------------------
1109 | 
1110 |     function drawPositionInstant () {
1111 |       // clear the board
1112 |       $board.find('.' + CSS.piece).remove()
1113 | 
1114 |       // add the pieces
1115 |       for (var i in currentPosition) {
1116 |         if (!currentPosition.hasOwnProperty(i)) continue
1117 | 
1118 |         $('#' + squareElsIds[i]).append(buildPieceHTML(currentPosition[i]))
1119 |       }
1120 |     }
1121 | 
1122 |     function drawBoard () {
1123 |       $board.html(buildBoardHTML(currentOrientation, squareSize, config.showNotation))
1124 |       drawPositionInstant()
1125 | 
1126 |       if (config.sparePieces) {
1127 |         if (currentOrientation === 'white') {
1128 |           $sparePiecesTop.html(buildSparePiecesHTML('black'))
1129 |           $sparePiecesBottom.html(buildSparePiecesHTML('white'))
1130 |         } else {
1131 |           $sparePiecesTop.html(buildSparePiecesHTML('white'))
1132 |           $sparePiecesBottom.html(buildSparePiecesHTML('black'))
1133 |         }
1134 |       }
1135 |     }
1136 | 
1137 |     function setCurrentPosition (position) {
1138 |       var oldPos = deepCopy(currentPosition)
1139 |       var newPos = deepCopy(position)
1140 |       var oldFen = objToFen(oldPos)
1141 |       var newFen = objToFen(newPos)
1142 | 
1143 |       // do nothing if no change in position
1144 |       if (oldFen === newFen) return
1145 | 
1146 |       // run their onChange function
1147 |       if (isFunction(config.onChange)) {
1148 |         config.onChange(oldPos, newPos)
1149 |       }
1150 | 
1151 |       // update state
1152 |       currentPosition = position
1153 |     }
1154 | 
1155 |     function isXYOnSquare (x, y) {
1156 |       for (var i in squareElsOffsets) {
1157 |         if (!squareElsOffsets.hasOwnProperty(i)) continue
1158 | 
1159 |         var s = squareElsOffsets[i]
1160 |         if (x >= s.left &&
1161 |             x < s.left + squareSize &&
1162 |             y >= s.top &&
1163 |             y < s.top + squareSize) {
1164 |           return i
1165 |         }
1166 |       }
1167 | 
1168 |       return 'offboard'
1169 |     }
1170 | 
1171 |     // records the XY coords of every square into memory
1172 |     function captureSquareOffsets () {
1173 |       squareElsOffsets = {}
1174 | 
1175 |       for (var i in squareElsIds) {
1176 |         if (!squareElsIds.hasOwnProperty(i)) continue
1177 | 
1178 |         squareElsOffsets[i] = $('#' + squareElsIds[i]).offset()
1179 |       }
1180 |     }
1181 | 
1182 |     function removeSquareHighlights () {
1183 |       $board
1184 |         .find('.' + CSS.square)
1185 |         .removeClass(CSS.highlight1 + ' ' + CSS.highlight2)
1186 |     }
1187 | 
1188 |     function snapbackDraggedPiece () {
1189 |       // there is no "snapback" for spare pieces
1190 |       if (draggedPieceSource === 'spare') {
1191 |         trashDraggedPiece()
1192 |         return
1193 |       }
1194 | 
1195 |       removeSquareHighlights()
1196 | 
1197 |       // animation complete
1198 |       function complete () {
1199 |         drawPositionInstant()
1200 |         $draggedPiece.css('display', 'none')
1201 | 
1202 |         // run their onSnapbackEnd function
1203 |         if (isFunction(config.onSnapbackEnd)) {
1204 |           config.onSnapbackEnd(
1205 |             draggedPiece,
1206 |             draggedPieceSource,
1207 |             deepCopy(currentPosition),
1208 |             currentOrientation
1209 |           )
1210 |         }
1211 |       }
1212 | 
1213 |       // get source square position
1214 |       var sourceSquarePosition = $('#' + squareElsIds[draggedPieceSource]).offset()
1215 | 
1216 |       // animate the piece to the target square
1217 |       var opts = {
1218 |         duration: config.snapbackSpeed,
1219 |         complete: complete
1220 |       }
1221 |       $draggedPiece.animate(sourceSquarePosition, opts)
1222 | 
1223 |       // set state
1224 |       isDragging = false
1225 |     }
1226 | 
1227 |     function trashDraggedPiece () {
1228 |       removeSquareHighlights()
1229 | 
1230 |       // remove the source piece
1231 |       var newPosition = deepCopy(currentPosition)
1232 |       delete newPosition[draggedPieceSource]
1233 |       setCurrentPosition(newPosition)
1234 | 
1235 |       // redraw the position
1236 |       drawPositionInstant()
1237 | 
1238 |       // hide the dragged piece
1239 |       $draggedPiece.fadeOut(config.trashSpeed)
1240 | 
1241 |       // set state
1242 |       isDragging = false
1243 |     }
1244 | 
1245 |     function dropDraggedPieceOnSquare (square) {
1246 |       removeSquareHighlights()
1247 | 
1248 |       // update position
1249 |       var newPosition = deepCopy(currentPosition)
1250 |       delete newPosition[draggedPieceSource]
1251 |       newPosition[square] = draggedPiece
1252 |       setCurrentPosition(newPosition)
1253 | 
1254 |       // get target square information
1255 |       var targetSquarePosition = $('#' + squareElsIds[square]).offset()
1256 | 
1257 |       // animation complete
1258 |       function onAnimationComplete () {
1259 |         drawPositionInstant()
1260 |         $draggedPiece.css('display', 'none')
1261 | 
1262 |         // execute their onSnapEnd function
1263 |         if (isFunction(config.onSnapEnd)) {
1264 |           config.onSnapEnd(draggedPieceSource, square, draggedPiece)
1265 |         }
1266 |       }
1267 | 
1268 |       // snap the piece to the target square
1269 |       var opts = {
1270 |         duration: config.snapSpeed,
1271 |         complete: onAnimationComplete
1272 |       }
1273 |       $draggedPiece.animate(targetSquarePosition, opts)
1274 | 
1275 |       // set state
1276 |       isDragging = false
1277 |     }
1278 | 
1279 |     function beginDraggingPiece (source, piece, x, y) {
1280 |       // run their custom onDragStart function
1281 |       // their custom onDragStart function can cancel drag start
1282 |       if (isFunction(config.onDragStart) &&
1283 |           config.onDragStart(source, piece, deepCopy(currentPosition), currentOrientation) === false) {
1284 |         return
1285 |       }
1286 | 
1287 |       // set state
1288 |       isDragging = true
1289 |       draggedPiece = piece
1290 |       draggedPieceSource = source
1291 | 
1292 |       // if the piece came from spare pieces, location is offboard
1293 |       if (source === 'spare') {
1294 |         draggedPieceLocation = 'offboard'
1295 |       } else {
1296 |         draggedPieceLocation = source
1297 |       }
1298 | 
1299 |       // capture the x, y coords of all squares in memory
1300 |       captureSquareOffsets()
1301 | 
1302 |       // create the dragged piece
1303 |       $draggedPiece.attr('src', buildPieceImgSrc(piece)).css({
1304 |         display: '',
1305 |         position: 'absolute',
1306 |         left: x - squareSize / 2,
1307 |         top: y - squareSize / 2
1308 |       })
1309 | 
1310 |       if (source !== 'spare') {
1311 |         // highlight the source square and hide the piece
1312 |         $('#' + squareElsIds[source])
1313 |           .addClass(CSS.highlight1)
1314 |           .find('.' + CSS.piece)
1315 |           .css('display', 'none')
1316 |       }
1317 |     }
1318 | 
1319 |     function updateDraggedPiece (x, y) {
1320 |       // put the dragged piece over the mouse cursor
1321 |       $draggedPiece.css({
1322 |         left: x - squareSize / 2,
1323 |         top: y - squareSize / 2
1324 |       })
1325 | 
1326 |       // get location
1327 |       var location = isXYOnSquare(x, y)
1328 | 
1329 |       // do nothing if the location has not changed
1330 |       if (location === draggedPieceLocation) return
1331 | 
1332 |       // remove highlight from previous square
1333 |       if (validSquare(draggedPieceLocation)) {
1334 |         $('#' + squareElsIds[draggedPieceLocation]).removeClass(CSS.highlight2)
1335 |       }
1336 | 
1337 |       // add highlight to new square
1338 |       if (validSquare(location)) {
1339 |         $('#' + squareElsIds[location]).addClass(CSS.highlight2)
1340 |       }
1341 | 
1342 |       // run onDragMove
1343 |       if (isFunction(config.onDragMove)) {
1344 |         config.onDragMove(
1345 |           location,
1346 |           draggedPieceLocation,
1347 |           draggedPieceSource,
1348 |           draggedPiece,
1349 |           deepCopy(currentPosition),
1350 |           currentOrientation
1351 |         )
1352 |       }
1353 | 
1354 |       // update state
1355 |       draggedPieceLocation = location
1356 |     }
1357 | 
1358 |     function stopDraggedPiece (location) {
1359 |       // determine what the action should be
1360 |       var action = 'drop'
1361 |       if (location === 'offboard' && config.dropOffBoard === 'snapback') {
1362 |         action = 'snapback'
1363 |       }
1364 |       if (location === 'offboard' && config.dropOffBoard === 'trash') {
1365 |         action = 'trash'
1366 |       }
1367 | 
1368 |       // run their onDrop function, which can potentially change the drop action
1369 |       if (isFunction(config.onDrop)) {
1370 |         var newPosition = deepCopy(currentPosition)
1371 | 
1372 |         // source piece is a spare piece and position is off the board
1373 |         // if (draggedPieceSource === 'spare' && location === 'offboard') {...}
1374 |         // position has not changed; do nothing
1375 | 
1376 |         // source piece is a spare piece and position is on the board
1377 |         if (draggedPieceSource === 'spare' && validSquare(location)) {
1378 |           // add the piece to the board
1379 |           newPosition[location] = draggedPiece
1380 |         }
1381 | 
1382 |         // source piece was on the board and position is off the board
1383 |         if (validSquare(draggedPieceSource) && location === 'offboard') {
1384 |           // remove the piece from the board
1385 |           delete newPosition[draggedPieceSource]
1386 |         }
1387 | 
1388 |         // source piece was on the board and position is on the board
1389 |         if (validSquare(draggedPieceSource) && validSquare(location)) {
1390 |           // move the piece
1391 |           delete newPosition[draggedPieceSource]
1392 |           newPosition[location] = draggedPiece
1393 |         }
1394 | 
1395 |         var oldPosition = deepCopy(currentPosition)
1396 | 
1397 |         var result = config.onDrop(
1398 |           draggedPieceSource,
1399 |           location,
1400 |           draggedPiece,
1401 |           newPosition,
1402 |           oldPosition,
1403 |           currentOrientation
1404 |         )
1405 |         if (result === 'snapback' || result === 'trash') {
1406 |           action = result
1407 |         }
1408 |       }
1409 | 
1410 |       // do it!
1411 |       if (action === 'snapback') {
1412 |         snapbackDraggedPiece()
1413 |       } else if (action === 'trash') {
1414 |         trashDraggedPiece()
1415 |       } else if (action === 'drop') {
1416 |         dropDraggedPieceOnSquare(location)
1417 |       }
1418 |     }
1419 | 
1420 |     // -------------------------------------------------------------------------
1421 |     // Public Methods
1422 |     // -------------------------------------------------------------------------
1423 | 
1424 |     // clear the board
1425 |     widget.clear = function (useAnimation) {
1426 |       widget.position({}, useAnimation)
1427 |     }
1428 | 
1429 |     // remove the widget from the page
1430 |     widget.destroy = function () {
1431 |       // remove markup
1432 |       $container.html('')
1433 |       $draggedPiece.remove()
1434 | 
1435 |       // remove event handlers
1436 |       $container.unbind()
1437 |     }
1438 | 
1439 |     // shorthand method to get the current FEN
1440 |     widget.fen = function () {
1441 |       return widget.position('fen')
1442 |     }
1443 | 
1444 |     // flip orientation
1445 |     widget.flip = function () {
1446 |       return widget.orientation('flip')
1447 |     }
1448 | 
1449 |     // move pieces
1450 |     // TODO: this method should be variadic as well as accept an array of moves
1451 |     widget.move = function () {
1452 |       // no need to throw an error here; just do nothing
1453 |       // TODO: this should return the current position
1454 |       if (arguments.length === 0) return
1455 | 
1456 |       var useAnimation = true
1457 | 
1458 |       // collect the moves into an object
1459 |       var moves = {}
1460 |       for (var i = 0; i < arguments.length; i++) {
1461 |         // any "false" to this function means no animations
1462 |         if (arguments[i] === false) {
1463 |           useAnimation = false
1464 |           continue
1465 |         }
1466 | 
1467 |         // skip invalid arguments
1468 |         if (!validMove(arguments[i])) {
1469 |           error(2826, 'Invalid move passed to the move method.', arguments[i])
1470 |           continue
1471 |         }
1472 | 
1473 |         var tmp = arguments[i].split('-')
1474 |         moves[tmp[0]] = tmp[1]
1475 |       }
1476 | 
1477 |       // calculate position from moves
1478 |       var newPos = calculatePositionFromMoves(currentPosition, moves)
1479 | 
1480 |       // update the board
1481 |       widget.position(newPos, useAnimation)
1482 | 
1483 |       // return the new position object
1484 |       return newPos
1485 |     }
1486 | 
1487 |     widget.orientation = function (arg) {
1488 |       // no arguments, return the current orientation
1489 |       if (arguments.length === 0) {
1490 |         return currentOrientation
1491 |       }
1492 | 
1493 |       // set to white or black
1494 |       if (arg === 'white' || arg === 'black') {
1495 |         currentOrientation = arg
1496 |         drawBoard()
1497 |         return currentOrientation
1498 |       }
1499 | 
1500 |       // flip orientation
1501 |       if (arg === 'flip') {
1502 |         currentOrientation = currentOrientation === 'white' ? 'black' : 'white'
1503 |         drawBoard()
1504 |         return currentOrientation
1505 |       }
1506 | 
1507 |       error(5482, 'Invalid value passed to the orientation method.', arg)
1508 |     }
1509 | 
1510 |     widget.position = function (position, useAnimation) {
1511 |       // no arguments, return the current position
1512 |       if (arguments.length === 0) {
1513 |         return deepCopy(currentPosition)
1514 |       }
1515 | 
1516 |       // get position as FEN
1517 |       if (isString(position) && position.toLowerCase() === 'fen') {
1518 |         return objToFen(currentPosition)
1519 |       }
1520 | 
1521 |       // start position
1522 |       if (isString(position) && position.toLowerCase() === 'start') {
1523 |         position = deepCopy(START_POSITION)
1524 |       }
1525 | 
1526 |       // convert FEN to position object
1527 |       if (validFen(position)) {
1528 |         position = fenToObj(position)
1529 |       }
1530 | 
1531 |       // validate position object
1532 |       if (!validPositionObject(position)) {
1533 |         error(6482, 'Invalid value passed to the position method.', position)
1534 |         return
1535 |       }
1536 | 
1537 |       // default for useAnimations is true
1538 |       if (useAnimation !== false) useAnimation = true
1539 | 
1540 |       if (useAnimation) {
1541 |         // start the animations
1542 |         var animations = calculateAnimations(currentPosition, position)
1543 |         doAnimations(animations, currentPosition, position)
1544 | 
1545 |         // set the new position
1546 |         setCurrentPosition(position)
1547 |       } else {
1548 |         // instant update
1549 |         setCurrentPosition(position)
1550 |         drawPositionInstant()
1551 |       }
1552 |     }
1553 | 
1554 |     widget.resize = function () {
1555 |       // calulate the new square size
1556 |       squareSize = calculateSquareSize()
1557 | 
1558 |       // set board width
1559 |       $board.css('width', squareSize * 8 + 'px')
1560 | 
1561 |       // set drag piece size
1562 |       $draggedPiece.css({
1563 |         height: squareSize,
1564 |         width: squareSize
1565 |       })
1566 | 
1567 |       // spare pieces
1568 |       if (config.sparePieces) {
1569 |         $container
1570 |           .find('.' + CSS.sparePieces)
1571 |           .css('paddingLeft', squareSize + boardBorderSize + 'px')
1572 |       }
1573 | 
1574 |       // redraw the board
1575 |       drawBoard()
1576 |     }
1577 | 
1578 |     // set the starting position
1579 |     widget.start = function (useAnimation) {
1580 |       widget.position('start', useAnimation)
1581 |     }
1582 | 
1583 |     // -------------------------------------------------------------------------
1584 |     // Browser Events
1585 |     // -------------------------------------------------------------------------
1586 | 
1587 |     function stopDefault (evt) {
1588 |       evt.preventDefault()
1589 |     }
1590 | 
1591 |     function mousedownSquare (evt) {
1592 |       // do nothing if we're not draggable
1593 |       if (!config.draggable) return
1594 | 
1595 |       // do nothing if there is no piece on this square
1596 |       var square = $(this).attr('data-square')
1597 |       if (!validSquare(square)) return
1598 |       if (!currentPosition.hasOwnProperty(square)) return
1599 | 
1600 |       beginDraggingPiece(square, currentPosition[square], evt.pageX, evt.pageY)
1601 |     }
1602 | 
1603 |     function touchstartSquare (e) {
1604 |       // do nothing if we're not draggable
1605 |       if (!config.draggable) return
1606 | 
1607 |       // do nothing if there is no piece on this square
1608 |       var square = $(this).attr('data-square')
1609 |       if (!validSquare(square)) return
1610 |       if (!currentPosition.hasOwnProperty(square)) return
1611 | 
1612 |       e = e.originalEvent
1613 |       beginDraggingPiece(
1614 |         square,
1615 |         currentPosition[square],
1616 |         e.changedTouches[0].pageX,
1617 |         e.changedTouches[0].pageY
1618 |       )
1619 |     }
1620 | 
1621 |     function mousedownSparePiece (evt) {
1622 |       // do nothing if sparePieces is not enabled
1623 |       if (!config.sparePieces) return
1624 | 
1625 |       var piece = $(this).attr('data-piece')
1626 | 
1627 |       beginDraggingPiece('spare', piece, evt.pageX, evt.pageY)
1628 |     }
1629 | 
1630 |     function touchstartSparePiece (e) {
1631 |       // do nothing if sparePieces is not enabled
1632 |       if (!config.sparePieces) return
1633 | 
1634 |       var piece = $(this).attr('data-piece')
1635 | 
1636 |       e = e.originalEvent
1637 |       beginDraggingPiece(
1638 |         'spare',
1639 |         piece,
1640 |         e.changedTouches[0].pageX,
1641 |         e.changedTouches[0].pageY
1642 |       )
1643 |     }
1644 | 
1645 |     function mousemoveWindow (evt) {
1646 |       if (isDragging) {
1647 |         updateDraggedPiece(evt.pageX, evt.pageY)
1648 |       }
1649 |     }
1650 | 
1651 |     var throttledMousemoveWindow = throttle(mousemoveWindow, config.dragThrottleRate)
1652 | 
1653 |     function touchmoveWindow (evt) {
1654 |       // do nothing if we are not dragging a piece
1655 |       if (!isDragging) return
1656 | 
1657 |       // prevent screen from scrolling
1658 |       evt.preventDefault()
1659 | 
1660 |       updateDraggedPiece(evt.originalEvent.changedTouches[0].pageX,
1661 |         evt.originalEvent.changedTouches[0].pageY)
1662 |     }
1663 | 
1664 |     var throttledTouchmoveWindow = throttle(touchmoveWindow, config.dragThrottleRate)
1665 | 
1666 |     function mouseupWindow (evt) {
1667 |       // do nothing if we are not dragging a piece
1668 |       if (!isDragging) return
1669 | 
1670 |       // get the location
1671 |       var location = isXYOnSquare(evt.pageX, evt.pageY)
1672 | 
1673 |       stopDraggedPiece(location)
1674 |     }
1675 | 
1676 |     function touchendWindow (evt) {
1677 |       // do nothing if we are not dragging a piece
1678 |       if (!isDragging) return
1679 | 
1680 |       // get the location
1681 |       var location = isXYOnSquare(evt.originalEvent.changedTouches[0].pageX,
1682 |         evt.originalEvent.changedTouches[0].pageY)
1683 | 
1684 |       stopDraggedPiece(location)
1685 |     }
1686 | 
1687 |     function mouseenterSquare (evt) {
1688 |       // do not fire this event if we are dragging a piece
1689 |       // NOTE: this should never happen, but it's a safeguard
1690 |       if (isDragging) return
1691 | 
1692 |       // exit if they did not provide a onMouseoverSquare function
1693 |       if (!isFunction(config.onMouseoverSquare)) return
1694 | 
1695 |       // get the square
1696 |       var square = $(evt.currentTarget).attr('data-square')
1697 | 
1698 |       // NOTE: this should never happen; defensive
1699 |       if (!validSquare(square)) return
1700 | 
1701 |       // get the piece on this square
1702 |       var piece = false
1703 |       if (currentPosition.hasOwnProperty(square)) {
1704 |         piece = currentPosition[square]
1705 |       }
1706 | 
1707 |       // execute their function
1708 |       config.onMouseoverSquare(square, piece, deepCopy(currentPosition), currentOrientation)
1709 |     }
1710 | 
1711 |     function mouseleaveSquare (evt) {
1712 |       // do not fire this event if we are dragging a piece
1713 |       // NOTE: this should never happen, but it's a safeguard
1714 |       if (isDragging) return
1715 | 
1716 |       // exit if they did not provide an onMouseoutSquare function
1717 |       if (!isFunction(config.onMouseoutSquare)) return
1718 | 
1719 |       // get the square
1720 |       var square = $(evt.currentTarget).attr('data-square')
1721 | 
1722 |       // NOTE: this should never happen; defensive
1723 |       if (!validSquare(square)) return
1724 | 
1725 |       // get the piece on this square
1726 |       var piece = false
1727 |       if (currentPosition.hasOwnProperty(square)) {
1728 |         piece = currentPosition[square]
1729 |       }
1730 | 
1731 |       // execute their function
1732 |       config.onMouseoutSquare(square, piece, deepCopy(currentPosition), currentOrientation)
1733 |     }
1734 | 
1735 |     // -------------------------------------------------------------------------
1736 |     // Initialization
1737 |     // -------------------------------------------------------------------------
1738 | 
1739 |     function addEvents () {
1740 |       // prevent "image drag"
1741 |       $('body').on('mousedown mousemove', '.' + CSS.piece, stopDefault)
1742 | 
1743 |       // mouse drag pieces
1744 |       $board.on('mousedown', '.' + CSS.square, mousedownSquare)
1745 |       $container.on('mousedown', '.' + CSS.sparePieces + ' .' + CSS.piece, mousedownSparePiece)
1746 | 
1747 |       // mouse enter / leave square
1748 |       $board
1749 |         .on('mouseenter', '.' + CSS.square, mouseenterSquare)
1750 |         .on('mouseleave', '.' + CSS.square, mouseleaveSquare)
1751 | 
1752 |       // piece drag
1753 |       var $window = $(window)
1754 |       $window
1755 |         .on('mousemove', throttledMousemoveWindow)
1756 |         .on('mouseup', mouseupWindow)
1757 | 
1758 |       // touch drag pieces
1759 |       if (isTouchDevice()) {
1760 |         $board.on('touchstart', '.' + CSS.square, touchstartSquare)
1761 |         $container.on('touchstart', '.' + CSS.sparePieces + ' .' + CSS.piece, touchstartSparePiece)
1762 |         $window
1763 |           .on('touchmove', throttledTouchmoveWindow)
1764 |           .on('touchend', touchendWindow)
1765 |       }
1766 |     }
1767 | 
1768 |     function initDOM () {
1769 |       // create unique IDs for all the elements we will create
1770 |       createElIds()
1771 | 
1772 |       // build board and save it in memory
1773 |       $container.html(buildContainerHTML(config.sparePieces))
1774 |       $board = $container.find('.' + CSS.board)
1775 | 
1776 |       if (config.sparePieces) {
1777 |         $sparePiecesTop = $container.find('.' + CSS.sparePiecesTop)
1778 |         $sparePiecesBottom = $container.find('.' + CSS.sparePiecesBottom)
1779 |       }
1780 | 
1781 |       // create the drag piece
1782 |       var draggedPieceId = uuid()
1783 |       $('body').append(buildPieceHTML('wP', true, draggedPieceId))
1784 |       $draggedPiece = $('#' + draggedPieceId)
1785 | 
1786 |       // TODO: need to remove this dragged piece element if the board is no
1787 |       // longer in the DOM
1788 | 
1789 |       // get the border size
1790 |       boardBorderSize = parseInt($board.css('borderLeftWidth'), 10)
1791 | 
1792 |       // set the size and draw the board
1793 |       widget.resize()
1794 |     }
1795 | 
1796 |     // -------------------------------------------------------------------------
1797 |     // Initialization
1798 |     // -------------------------------------------------------------------------
1799 | 
1800 |     setInitialState()
1801 |     initDOM()
1802 |     addEvents()
1803 | 
1804 |     // return the widget object
1805 |     return widget
1806 |   } // end constructor
1807 | 
1808 |   // TODO: do module exports here
1809 |   window['Chessboard'] = constructor
1810 | 
1811 |   // support legacy ChessBoard name
1812 |   window['ChessBoard'] = window['Chessboard']
1813 | 
1814 |   // expose util functions
1815 |   window['Chessboard']['fenToObj'] = fenToObj
1816 |   window['Chessboard']['objToFen'] = objToFen
1817 | })() // end anonymous wrapper
1818 | 


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/tampermonkey script/content/chesspieces/bB.svg:
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 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 3 | <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45" height="45">
 4 |   <g style="opacity:1; fill:none; fill-rule:evenodd; fill-opacity:1; stroke:#000000; stroke-width:1.5; stroke-linecap:round; stroke-linejoin:round; stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;" transform="translate(0,0.6)">
 5 |     <g style="fill:#000000; stroke:#000000; stroke-linecap:butt;">
 6 |       <path d="M 9,36 C 12.39,35.03 19.11,36.43 22.5,34 C 25.89,36.43 32.61,35.03 36,36 C 36,36 37.65,36.54 39,38 C 38.32,38.97 37.35,38.99 36,38.5 C 32.61,37.53 25.89,38.96 22.5,37.5 C 19.11,38.96 12.39,37.53 9,38.5 C 7.65,38.99 6.68,38.97 6,38 C 7.35,36.54 9,36 9,36 z"/>
 7 |       <path d="M 15,32 C 17.5,34.5 27.5,34.5 30,32 C 30.5,30.5 30,30 30,30 C 30,27.5 27.5,26 27.5,26 C 33,24.5 33.5,14.5 22.5,10.5 C 11.5,14.5 12,24.5 17.5,26 C 17.5,26 15,27.5 15,30 C 15,30 14.5,30.5 15,32 z"/>
 8 |       <path d="M 25 8 A 2.5 2.5 0 1 1  20,8 A 2.5 2.5 0 1 1  25 8 z"/>
 9 |     </g>
10 |     <path d="M 17.5,26 L 27.5,26 M 15,30 L 30,30 M 22.5,15.5 L 22.5,20.5 M 20,18 L 25,18" style="fill:none; stroke:#ffffff; stroke-linejoin:miter;"/>
11 |   </g>
12 | </svg>
13 | 


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/tampermonkey script/content/chesspieces/bK.svg:
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 2 | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 3 | <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45" height="45">
 4 |   <g style="fill:none; fill-opacity:1; fill-rule:evenodd; stroke:#000000; stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;">
 5 |     <path d="M 22.5,11.63 L 22.5,6" style="fill:none; stroke:#000000; stroke-linejoin:miter;" id="path6570"/>
 6 |     <path d="M 22.5,25 C 22.5,25 27,17.5 25.5,14.5 C 25.5,14.5 24.5,12 22.5,12 C 20.5,12 19.5,14.5 19.5,14.5 C 18,17.5 22.5,25 22.5,25" style="fill:#000000;fill-opacity:1; stroke-linecap:butt; stroke-linejoin:miter;"/>
 7 |     <path d="M 12.5,37 C 18,40.5 27,40.5 32.5,37 L 32.5,30 C 32.5,30 41.5,25.5 38.5,19.5 C 34.5,13 25,16 22.5,23.5 L 22.5,27 L 22.5,23.5 C 20,16 10.5,13 6.5,19.5 C 3.5,25.5 12.5,30 12.5,30 L 12.5,37" style="fill:#000000; stroke:#000000;"/>
 8 |     <path d="M 20,8 L 25,8" style="fill:none; stroke:#000000; stroke-linejoin:miter;"/>
 9 |     <path d="M 32,29.5 C 32,29.5 40.5,25.5 38.03,19.85 C 34.15,14 25,18 22.5,24.5 L 22.5,26.6 L 22.5,24.5 C 20,18 10.85,14 6.97,19.85 C 4.5,25.5 13,29.5 13,29.5" style="fill:none; stroke:#ffffff;"/>
10 |     <path d="M 12.5,30 C 18,27 27,27 32.5,30 M 12.5,33.5 C 18,30.5 27,30.5 32.5,33.5 M 12.5,37 C 18,34 27,34 32.5,37" style="fill:none; stroke:#ffffff;"/>
11 |   </g>
12 | </svg>
13 | 


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/tampermonkey script/content/chesspieces/bN.svg:
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 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 3 | <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45" height="45">
 4 |   <g style="opacity:1; fill:none; fill-opacity:1; fill-rule:evenodd; stroke:#000000; stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;" transform="translate(0,0.3)">
 5 |     <path
 6 |       d="M 22,10 C 32.5,11 38.5,18 38,39 L 15,39 C 15,30 25,32.5 23,18"
 7 |       style="fill:#000000; stroke:#000000;" />
 8 |     <path
 9 |       d="M 24,18 C 24.38,20.91 18.45,25.37 16,27 C 13,29 13.18,31.34 11,31 C 9.958,30.06 12.41,27.96 11,28 C 10,28 11.19,29.23 10,30 C 9,30 5.997,31 6,26 C 6,24 12,14 12,14 C 12,14 13.89,12.1 14,10.5 C 13.27,9.506 13.5,8.5 13.5,7.5 C 14.5,6.5 16.5,10 16.5,10 L 18.5,10 C 18.5,10 19.28,8.008 21,7 C 22,7 22,10 22,10"
10 |       style="fill:#000000; stroke:#000000;" />
11 |     <path
12 |       d="M 9.5 25.5 A 0.5 0.5 0 1 1 8.5,25.5 A 0.5 0.5 0 1 1 9.5 25.5 z"
13 |       style="fill:#ffffff; stroke:#ffffff;" />
14 |     <path
15 |       d="M 15 15.5 A 0.5 1.5 0 1 1  14,15.5 A 0.5 1.5 0 1 1  15 15.5 z"
16 |       transform="matrix(0.866,0.5,-0.5,0.866,9.693,-5.173)"
17 |       style="fill:#ffffff; stroke:#ffffff;" />
18 |     <path
19 |       d="M 24.55,10.4 L 24.1,11.85 L 24.6,12 C 27.75,13 30.25,14.49 32.5,18.75 C 34.75,23.01 35.75,29.06 35.25,39 L 35.2,39.5 L 37.45,39.5 L 37.5,39 C 38,28.94 36.62,22.15 34.25,17.66 C 31.88,13.17 28.46,11.02 25.06,10.5 L 24.55,10.4 z "
20 |       style="fill:#ffffff; stroke:none;" />
21 |   </g>
22 | </svg>
23 | 


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1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
2 | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
3 | <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45" height="45">
4 |   <path d="m 22.5,9 c -2.21,0 -4,1.79 -4,4 0,0.89 0.29,1.71 0.78,2.38 C 17.33,16.5 16,18.59 16,21 c 0,2.03 0.94,3.84 2.41,5.03 C 15.41,27.09 11,31.58 11,39.5 H 34 C 34,31.58 29.59,27.09 26.59,26.03 28.06,24.84 29,23.03 29,21 29,18.59 27.67,16.5 25.72,15.38 26.21,14.71 26.5,13.89 26.5,13 c 0,-2.21 -1.79,-4 -4,-4 z" style="opacity:1; fill:#000000; fill-opacity:1; fill-rule:nonzero; stroke:#000000; stroke-width:1.5; stroke-linecap:round; stroke-linejoin:miter; stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;"/>
5 | </svg>
6 | 


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/tampermonkey script/content/chesspieces/bQ.svg:
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 1 | <?xml version="1.0" encoding="utf-8" standalone="no"?>
 2 | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
 3 | "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 4 | <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45"
 5 | height="45">
 6 |   <g style="fill:#000000;stroke:#000000;stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round">
 7 | 
 8 |     <path d="M 9,26 C 17.5,24.5 30,24.5 36,26 L 38.5,13.5 L 31,25 L 30.7,10.9 L 25.5,24.5 L 22.5,10 L 19.5,24.5 L 14.3,10.9 L 14,25 L 6.5,13.5 L 9,26 z"
 9 |     style="stroke-linecap:butt;fill:#000000" />
10 |     <path d="m 9,26 c 0,2 1.5,2 2.5,4 1,1.5 1,1 0.5,3.5 -1.5,1 -1,2.5 -1,2.5 -1.5,1.5 0,2.5 0,2.5 6.5,1 16.5,1 23,0 0,0 1.5,-1 0,-2.5 0,0 0.5,-1.5 -1,-2.5 -0.5,-2.5 -0.5,-2 0.5,-3.5 1,-2 2.5,-2 2.5,-4 -8.5,-1.5 -18.5,-1.5 -27,0 z" />
11 |     <path d="M 11.5,30 C 15,29 30,29 33.5,30" />
12 |     <path d="m 12,33.5 c 6,-1 15,-1 21,0" />
13 |     <circle cx="6" cy="12" r="2" />
14 |     <circle cx="14" cy="9" r="2" />
15 |     <circle cx="22.5" cy="8" r="2" />
16 |     <circle cx="31" cy="9" r="2" />
17 |     <circle cx="39" cy="12" r="2" />
18 |     <path d="M 11,38.5 A 35,35 1 0 0 34,38.5"
19 |     style="fill:none; stroke:#000000;stroke-linecap:butt;" />
20 |     <g style="fill:none; stroke:#ffffff;">
21 |       <path d="M 11,29 A 35,35 1 0 1 34,29" />
22 |       <path d="M 12.5,31.5 L 32.5,31.5" />
23 |       <path d="M 11.5,34.5 A 35,35 1 0 0 33.5,34.5" />
24 |       <path d="M 10.5,37.5 A 35,35 1 0 0 34.5,37.5" />
25 |     </g>
26 |   </g>
27 | </svg>
28 | 


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/tampermonkey script/content/chesspieces/bR.svg:
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 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 3 | <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45" height="45">
 4 |   <g style="opacity:1; fill:#000000; fill-opacity:1; fill-rule:evenodd; stroke:#000000; stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;" transform="translate(0,0.3)">
 5 |     <path
 6 |       d="M 9,39 L 36,39 L 36,36 L 9,36 L 9,39 z "
 7 |       style="stroke-linecap:butt;" />
 8 |     <path
 9 |       d="M 12.5,32 L 14,29.5 L 31,29.5 L 32.5,32 L 12.5,32 z "
10 |       style="stroke-linecap:butt;" />
11 |     <path
12 |       d="M 12,36 L 12,32 L 33,32 L 33,36 L 12,36 z "
13 |       style="stroke-linecap:butt;" />
14 |     <path
15 |       d="M 14,29.5 L 14,16.5 L 31,16.5 L 31,29.5 L 14,29.5 z "
16 |       style="stroke-linecap:butt;stroke-linejoin:miter;" />
17 |     <path
18 |       d="M 14,16.5 L 11,14 L 34,14 L 31,16.5 L 14,16.5 z "
19 |       style="stroke-linecap:butt;" />
20 |     <path
21 |       d="M 11,14 L 11,9 L 15,9 L 15,11 L 20,11 L 20,9 L 25,9 L 25,11 L 30,11 L 30,9 L 34,9 L 34,14 L 11,14 z "
22 |       style="stroke-linecap:butt;" />
23 |     <path
24 |       d="M 12,35.5 L 33,35.5 L 33,35.5"
25 |       style="fill:none; stroke:#ffffff; stroke-width:1; stroke-linejoin:miter;" />
26 |     <path
27 |       d="M 13,31.5 L 32,31.5"
28 |       style="fill:none; stroke:#ffffff; stroke-width:1; stroke-linejoin:miter;" />
29 |     <path
30 |       d="M 14,29.5 L 31,29.5"
31 |       style="fill:none; stroke:#ffffff; stroke-width:1; stroke-linejoin:miter;" />
32 |     <path
33 |       d="M 14,16.5 L 31,16.5"
34 |       style="fill:none; stroke:#ffffff; stroke-width:1; stroke-linejoin:miter;" />
35 |     <path
36 |       d="M 11,14 L 34,14"
37 |       style="fill:none; stroke:#ffffff; stroke-width:1; stroke-linejoin:miter;" />
38 |   </g>
39 | </svg>
40 | 


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/tampermonkey script/content/chesspieces/wB.svg:
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 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 3 | <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45" height="45">
 4 |   <g style="opacity:1; fill:none; fill-rule:evenodd; fill-opacity:1; stroke:#000000; stroke-width:1.5; stroke-linecap:round; stroke-linejoin:round; stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;" transform="translate(0,0.6)">
 5 |     <g style="fill:#ffffff; stroke:#000000; stroke-linecap:butt;">
 6 |       <path d="M 9,36 C 12.39,35.03 19.11,36.43 22.5,34 C 25.89,36.43 32.61,35.03 36,36 C 36,36 37.65,36.54 39,38 C 38.32,38.97 37.35,38.99 36,38.5 C 32.61,37.53 25.89,38.96 22.5,37.5 C 19.11,38.96 12.39,37.53 9,38.5 C 7.65,38.99 6.68,38.97 6,38 C 7.35,36.54 9,36 9,36 z"/>
 7 |       <path d="M 15,32 C 17.5,34.5 27.5,34.5 30,32 C 30.5,30.5 30,30 30,30 C 30,27.5 27.5,26 27.5,26 C 33,24.5 33.5,14.5 22.5,10.5 C 11.5,14.5 12,24.5 17.5,26 C 17.5,26 15,27.5 15,30 C 15,30 14.5,30.5 15,32 z"/>
 8 |       <path d="M 25 8 A 2.5 2.5 0 1 1  20,8 A 2.5 2.5 0 1 1  25 8 z"/>
 9 |     </g>
10 |     <path d="M 17.5,26 L 27.5,26 M 15,30 L 30,30 M 22.5,15.5 L 22.5,20.5 M 20,18 L 25,18" style="fill:none; stroke:#000000; stroke-linejoin:miter;"/>
11 |   </g>
12 | </svg>
13 | 


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/tampermonkey script/content/chesspieces/wK.svg:
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1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
2 | <svg xmlns="http://www.w3.org/2000/svg" width="45" height="45">
3 |   <g fill="none" fill-rule="evenodd" stroke="#000" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5">
4 |     <path stroke-linejoin="miter" d="M22.5 11.63V6M20 8h5"/>
5 |     <path fill="#fff" stroke-linecap="butt" stroke-linejoin="miter" d="M22.5 25s4.5-7.5 3-10.5c0 0-1-2.5-3-2.5s-3 2.5-3 2.5c-1.5 3 3 10.5 3 10.5"/>
6 |     <path fill="#fff" d="M12.5 37c5.5 3.5 14.5 3.5 20 0v-7s9-4.5 6-10.5c-4-6.5-13.5-3.5-16 4V27v-3.5c-2.5-7.5-12-10.5-16-4-3 6 6 10.5 6 10.5v7"/>
7 |     <path d="M12.5 30c5.5-3 14.5-3 20 0m-20 3.5c5.5-3 14.5-3 20 0m-20 3.5c5.5-3 14.5-3 20 0"/>
8 |   </g>
9 | </svg>


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/tampermonkey script/content/chesspieces/wN.svg:
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 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 3 | <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45" height="45">
 4 |   <g style="opacity:1; fill:none; fill-opacity:1; fill-rule:evenodd; stroke:#000000; stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;" transform="translate(0,0.3)">
 5 |     <path
 6 |       d="M 22,10 C 32.5,11 38.5,18 38,39 L 15,39 C 15,30 25,32.5 23,18"
 7 |       style="fill:#ffffff; stroke:#000000;" />
 8 |     <path
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3 | <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45" height="45">
4 |   <path d="m 22.5,9 c -2.21,0 -4,1.79 -4,4 0,0.89 0.29,1.71 0.78,2.38 C 17.33,16.5 16,18.59 16,21 c 0,2.03 0.94,3.84 2.41,5.03 C 15.41,27.09 11,31.58 11,39.5 H 34 C 34,31.58 29.59,27.09 26.59,26.03 28.06,24.84 29,23.03 29,21 29,18.59 27.67,16.5 25.72,15.38 26.21,14.71 26.5,13.89 26.5,13 c 0,-2.21 -1.79,-4 -4,-4 z" style="opacity:1; fill:#ffffff; fill-opacity:1; fill-rule:nonzero; stroke:#000000; stroke-width:1.5; stroke-linecap:round; stroke-linejoin:miter; stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;"/>
5 | </svg>
6 | 


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 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 3 | <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45" height="45">
 4 |   <g style="fill:#ffffff;stroke:#000000;stroke-width:1.5;stroke-linejoin:round">
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10 |     <circle cx="14" cy="9" r="2" />
11 |     <circle cx="22.5" cy="8" r="2" />
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14 |   </g>
15 | </svg>
16 | 


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 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 3 | <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="45" height="45">
 4 |   <g style="opacity:1; fill:#ffffff; fill-opacity:1; fill-rule:evenodd; stroke:#000000; stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;" transform="translate(0,0.3)">
 5 |     <path
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 7 |       style="stroke-linecap:butt;" />
 8 |     <path
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10 |       style="stroke-linecap:butt;" />
11 |     <path
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14 |     <path
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16 |     <path
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21 |     <path
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23 |       style="fill:none; stroke:#000000; stroke-linejoin:miter;" />
24 |   </g>
25 | </svg>
26 | 


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/tampermonkey script/content/stockfish-multi-thread/stockfish.js:
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  1 | /*!
  2 |  * Stockfish copyright T. Romstad, M. Costalba, J. Kiiski, G. Linscott
  3 |  * and other contributors.
  4 |  *
  5 |  * Released under the GNU General Public License v3.
  6 |  *
  7 |  * Compiled to JavaScript and WebAssembly by Niklas Fiekas
  8 |  * <niklas.fiekas@backscattering.de> using Emscripten.
  9 |  *
 10 |  * https://github.com/niklasf/stockfish.wasm
 11 |  */
 12 | 
 13 | var Stockfish = (function() {
 14 |   var _scriptDir = typeof document !== 'undefined' && document.currentScript ? document.currentScript.src : undefined;
 15 |   if (typeof __filename !== 'undefined') _scriptDir = _scriptDir || __filename;
 16 |   return (
 17 | function(Stockfish) {
 18 |   Stockfish = Stockfish || {};
 19 | 
 20 | 
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 87 | function L(a){this.name="ExitStatus";this.message="Program terminated with exit("+a+")";this.status=a}T=function Xb(){Wb||Yb();Wb||(T=Xb)};
 88 | function Yb(a){function b(){if(!Wb&&(Wb=!0,z.calledRun=!0,!ua)){Pa(Ea);F||Pa(Fa);ia(z);if(z.onRuntimeInitialized)z.onRuntimeInitialized();if(Zb){var c=a,e=z._main;c=c||[];var h=c.length+1,g=R(4*(h+1));v()[g>>2]=za(la);for(var m=1;m<h;m++)v()[(g>>2)+m]=za(c[m-1]);v()[(g>>2)+h]=0;try{var p=e(h,g);Za(p,!0)}catch(u){u instanceof L||("unwind"==u?noExitRuntime=!0:((c=u)&&"object"===typeof u&&u.stack&&(c=[u,u.stack]),N("exception thrown: "+c),ma(1,u)))}finally{}}if(!F){if(z.postRun)for("function"==typeof z.postRun&&
 89 | (z.postRun=[z.postRun]);z.postRun.length;)c=z.postRun.shift(),Ga.unshift(c);Pa(Ga)}}}a=a||ka;if(!(0<S))if(F)ia(z),postMessage({cmd:"loaded"});else{if(!F){if(z.preRun)for("function"==typeof z.preRun&&(z.preRun=[z.preRun]);z.preRun.length;)Ia();Pa(Da)}0<S||(z.setStatus?(z.setStatus("Running..."),setTimeout(function(){setTimeout(function(){z.setStatus("")},1);b()},1)):b())}}z.run=Yb;
 90 | function Za(a,b){if(!b||!noExitRuntime||0!==a){if(!b&&F)throw postMessage({cmd:"exitProcess",returnCode:a}),new L(a);if(!noExitRuntime){A.Ea();if(z.onExit)z.onExit(a);ua=!0}ma(a,new L(a))}}if(z.preInit)for("function"==typeof z.preInit&&(z.preInit=[z.preInit]);0<z.preInit.length;)z.preInit.pop()();var Zb=!0;z.noInitialRun&&(Zb=!1);noExitRuntime=!F;F&&A.Na();Yb();
 91 | 
 92 | 
 93 |   return Stockfish.ready
 94 | }
 95 | );
 96 | })();
 97 | if (typeof exports === 'object' && typeof module === 'object')
 98 |   module.exports = Stockfish;
 99 | else if (typeof define === 'function' && define['amd'])
100 |   define([], function() { return Stockfish; });
101 | else if (typeof exports === 'object')
102 |   exports["Stockfish"] = Stockfish;
103 | 


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/tampermonkey script/content/stockfish-multi-thread/stockfish.wasm:
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https://raw.githubusercontent.com/sayfpack13/chess-analysis-bot/72f925c0a20749451c0ad193c2d39e843cbe6472/tampermonkey script/content/stockfish-multi-thread/stockfish.wasm


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/tampermonkey script/content/stockfish-multi-thread/stockfish.worker.js:
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1 | var Module={};function threadPrintErr(){var text=Array.prototype.slice.call(arguments).join(" ");console.error(text)}function threadAlert(){var text=Array.prototype.slice.call(arguments).join(" ");postMessage({cmd:"alert",text:text,threadId:Module["_pthread_self"]()})}var err=threadPrintErr;this.alert=threadAlert;Module["instantiateWasm"]=function(info,receiveInstance){var instance=new WebAssembly.Instance(Module["wasmModule"],info);Module["wasmModule"]=null;receiveInstance(instance);return instance.exports};function moduleLoaded(){}this.onmessage=function(e){try{if(e.data.cmd==="load"){Module["wasmModule"]=e.data.wasmModule;Module["wasmMemory"]=e.data.wasmMemory;Module["buffer"]=Module["wasmMemory"].buffer;Module["ENVIRONMENT_IS_PTHREAD"]=true;if(typeof e.data.urlOrBlob==="string"){importScripts(e.data.urlOrBlob)}else{var objectUrl=URL.createObjectURL(e.data.urlOrBlob);importScripts(objectUrl);URL.revokeObjectURL(objectUrl)}Stockfish(Module).then(function(instance){Module=instance;moduleLoaded()})}else if(e.data.cmd==="objectTransfer"){Module["PThread"].receiveObjectTransfer(e.data)}else if(e.data.cmd==="run"){Module["__performance_now_clock_drift"]=performance.now()-e.data.time;Module["__emscripten_thread_init"](e.data.threadInfoStruct,/*isMainBrowserThread=*/0,/*isMainRuntimeThread=*/0);var max=e.data.stackBase;var top=e.data.stackBase+e.data.stackSize;Module["establishStackSpace"](top,max);Module["_emscripten_tls_init"]();Module["PThread"].receiveObjectTransfer(e.data);Module["PThread"].setThreadStatus(Module["_pthread_self"](),1);/*EM_THREAD_STATUS_RUNNING*/try{var result=Module["invokeEntryPoint"](e.data.start_routine,e.data.arg);if(!Module["getNoExitRuntime"]())Module["PThread"].threadExit(result)}catch(ex){if(ex==="Canceled!"){Module["PThread"].threadCancel()}else if(ex!="unwind"){if(ex instanceof Module["ExitStatus"]){if(Module["getNoExitRuntime"]()){}else{Module["PThread"].threadExit(ex.status)}}else{Module["PThread"].threadExit(-2);throw ex}}}}else if(e.data.cmd==="cancel"){if(Module["_pthread_self"]()){Module["PThread"].threadCancel()}}else if(e.data.target==="setimmediate"){}else if(e.data.cmd==="processThreadQueue"){if(Module["_pthread_self"]()){Module["_emscripten_current_thread_process_queued_calls"]()}}else{err("worker.js received unknown command "+e.data.cmd);err(e.data)}}catch(ex){err("worker.js onmessage() captured an uncaught exception: "+ex);if(ex&&ex.stack)err(ex.stack);throw ex}};if(typeof process==="object"&&typeof process.versions==="object"&&typeof process.versions.node==="string"){self={location:{href:__filename}};var onmessage=this.onmessage;var nodeWorkerThreads=require("worker_threads");global.Worker=nodeWorkerThreads.Worker;var parentPort=nodeWorkerThreads.parentPort;parentPort.on("message",function(data){onmessage({data:data})});var nodeFS=require("fs");var nodeRead=function(filename){return nodeFS.readFileSync(filename,"utf8")};function globalEval(x){global.require=require;global.Module=Module;eval.call(null,x)}importScripts=function(f){globalEval(nodeRead(f))};postMessage=function(msg){parentPort.postMessage(msg)};if(typeof performance==="undefined"){performance={now:function(){return Date.now()}}}}
2 | 


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/utils/engine.js:
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 1 | const { VARS } = require('../VARS')
 2 | const { executeEngine } = require('./process')
 3 | 
 4 | class ChessEngine {
 5 |   constructor() {
 6 |     this.fen = []
 7 |   }
 8 | 
 9 | 
10 |   getTurn() {
11 |     return this.turn
12 |   }
13 | 
14 |   getLastFen() {
15 |     var pos = this.fen.length == 0 ? 0 : this.fen.length - 1
16 | 
17 |     return this.fen[pos]
18 |   }
19 | 
20 | 
21 | 
22 |   reset() {
23 |     this.turn = 'w'
24 |   }
25 | 
26 |   async start(id, engine_mode, turn, depth, movetime, engine_name, fen) {
27 |     this.engine_mode = engine_mode
28 |     this.turn = turn
29 |     this.depth = depth
30 |     this.movetime = movetime
31 |     this.engine = engine_name
32 |     this.fen.push(fen)
33 | 
34 | 
35 | 
36 | 
37 |     if (this.engine_mode == VARS.DEPTH_MODE) {
38 |       console.log("using depth mode")
39 |       engine_mode = `go depth ${this.depth}`
40 |     } else {
41 |       console.log("using movetime mode")
42 |       engine_mode = `go movetime ${this.movetime}`
43 |     }
44 | 
45 | 
46 |     var engineResult
47 | 
48 |     try {
49 |       engineResult = await executeEngine(
50 |         `position fen ${this.getLastFen()}\n`,
51 |         engine_mode,
52 |         this.engine
53 |       )
54 |     } catch (err) {
55 |       throw (err)
56 |     }
57 | 
58 | 
59 |     return {
60 |       ...engineResult,
61 |       id: id,
62 |       fen: this.getLastFen(),
63 |       turn: this.turn,
64 |       depth: this.depth,
65 |       bestMove: engineResult.bestmove,
66 |       ponder: engineResult.possible_human_move
67 |     }
68 |   }
69 | }
70 | 
71 | module.exports = { ChessEngine }
72 | 


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/utils/engine/engine_path:
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https://raw.githubusercontent.com/sayfpack13/chess-analysis-bot/72f925c0a20749451c0ad193c2d39e843cbe6472/utils/engine/engine_path


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/utils/process.js:
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 1 | const { spawn } = require('child_process');
 2 | const path = require('path');
 3 | const fs = require('fs');
 4 | 
 5 | 
 6 | 
 7 | const executeEngine = (command, engineCmd = 'go depth 10', engine_name) => {
 8 |   return new Promise((resolve, reject) => {
 9 |     const engines_path = path.resolve(process.cwd(), 'utils/engine');
10 |     const engine_path = path.resolve(engines_path, engine_name);
11 | 
12 |     if (!fs.existsSync(engine_path)) {
13 |       reject("Engine not found: " + engine_name);
14 |     }
15 | 
16 |     console.log("Using engine: " + engine_name);
17 | 
18 |     const engine = spawn(engine_path, {
19 |       shell: true,
20 |       cwd: engines_path
21 |     });
22 | 
23 |     engine.stdin.write(`${command}\n`);
24 |     engine.stdin.write(`${engineCmd}\n`);
25 | 
26 | 
27 | 
28 | 
29 |     engine.stdout.on('data', (chunk) => {
30 |       const result = chunk.toString();
31 |       if (result.includes('bestmove')) {
32 |         engine.kill();
33 | 
34 |         const depth = result.match(/info\sdepth\s\d+/);
35 |         const seldepth = result.match(/seldepth\s\d+/);
36 |         const bestmove = result.match(/bestmove\s\w+/);
37 |         const ponder = result.match(/ponder\s\w+/);
38 | 
39 |         resolve({
40 |           depth: depth ? Number(depth[0].match(/\d+/)[0]) : null,
41 |           seldepth: seldepth ? Number(seldepth[0].match(/\d+/)[0]) : null,
42 |           bestmove: bestmove ? bestmove[0].replace('bestmove ', '') : '',
43 |           possible_human_move: ponder ? ponder[0].replace('ponder ', '') : '',
44 |         });
45 |       }
46 |     });
47 | 
48 |     engine.on('error', (err) => {
49 |       reject(err);
50 |     });
51 | 
52 |     engine.stderr.on('data', (data) => {
53 |       reject(data);
54 |     });
55 |   });
56 | }
57 | 
58 | module.exports = {
59 |   executeEngine,
60 | }
61 | 


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