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goUno

A Go implementation of a popular card game: UNO

Contributors are welcome

Motivation

This project was started with a variety of intentions:

  • Shuffling: I wanted to analyze the Riffle technique for its randomness and its limits.
  • Strategies: Is it advantageous to play aggressively / stay with a certain color / switch colors if possible? In order to analyse new strategies, one can implement more cases in scoreCandidates(...) in player.go.
  • Entertainment: Just play UNO against a computer or together with other human players.
  • Web readiness: It will be rather straight forward to integrate the game engine as a server towards a web frontend that provides the game to users that wish for a more convenient UI than CLI.

Usage

Clone the repository and build the binary:

git clone https://github.com/pfedan/goUno.git
cd goUno
go build

Run the game (using different parameters):

./goUno.exe # Default: Two players "A" and "B", non-human, 1 round
./goUno.exe -p Adam,Berta,Charles # Three players with custom names
./goUno.exe -p Human,Computer1,Computer2 -h 1,0,0 # Three players, one human player defined with the -h flag list

Analyze a large number of rounds (example):

# Command
./goUno.exe -m -r 100000 -p A,B,C,D # Muted game log (-m) and 100k rounds with four players: A, B, C and D

# Output:
Wins per Player: map[A:26931 B:24493 C:24110 D:24466]
Total points per Player: map[A:3126210 B:2783448 C:2743152 D:2777534]
Count of turns per game: map[15:1 16:3 17:32 18:108 19:283 20:560 21:917 22:1334 23:1602 24:1817 25:1982 26:1967 27:1969 28:1978 29:1866 30:1918 31:2009 32:2032 33:2119 34:2126 35:2068 36:2038 37:2032 38:2041 39:2135 40:2065 41:2023 42:2015 43:1970 44:1936 45:1987 46:1909 47:1857 48:1816 49:1767 50:1757 51:1708 52:1656 53:1627 54:1616 55:1497 56:1456 57:1406 58:1370 59:1364 60:1261 61:1224 62:1175 63:1074 64:1060 65:1020 66:992 67:930 68:945 69:832 70:810 71:810 72:772 73:743 74:672 75:651 76:646 77:652 78:600 79:531 80:574 81:481 82:483 83:481 84:488 85:389 86:413 87:373 88:360 89:354 90:343 91:316 92:283 93:271 94:274 95:256 96:241 97:245 98:232 99:210 100:202 101:211 102:186 103:155 104:178 105:152 106:117 107:158 108:136 109:114 110:112 111:121 112:109 113:101 114:77 115:92 116:87 117:80 118:76 119:61 120:77 121:61 122:65 123:61 124:58 125:44 126:49 127:56 128:43 129:41 130:48 131:35 132:38 133:39 134:35 135:27 136:27 137:29 138:27 139:25 140:28 141:17 142:20 143:22 144:16 145:11 146:18 147:9 148:17 149:13 150:10 151:9 152:4 153:5 154:12 155:7 156:10 157:12 158:8 159:6 160:7 161:6 162:5 163:7 164:6 165:5 166:2 167:8 168:8 169:4 170:1 171:3 172:2 173:2 174:1 176:5 177:2 178:2 179:3 180:3 181:3 182:3 183:3 184:1 185:3 186:1 187:1 188:3 189:3 192:1 193:1 194:2 195:1 196:1 197:1 199:1 201:1 207:1 209:2 210:1 212:1 220:1 222:1 231:2 232:1 233:1 234:1 235:2 241:1 244:1 251:1 331:1]
Count of points per game: map[4:2 5:2 6:4 7:5 8:3 9:6 10:10 11:7 12:17 13:28 14:18 15:21 16:34 17:32 18:38 19:40 20:54 21:49 22:66 23:71 24:75 25:84 26:96 27:105 28:120 29:112 30:129 31:152 32:155 33:173 34:179 35:191 36:188 37:240 38:239 39:236 40:229 41:301 42:303 43:298 44:344 45:344 46:392 47:416 48:413 49:416 50:400 51:417 52:436 53:512 54:466 55:475 56:506 57:521 58:557 59:577 60:560 61:592 62:594 63:636 64:633 65:651 66:694 67:676 68:663 69:670 70:731 71:728 72:781 73:766 74:734 75:838 76:769 77:802 78:822 79:796 80:840 81:842 82:872 83:849 84:866 85:816 86:876 87:818 88:902 89:883 90:841 91:80792:894 93:853 94:897 95:871 96:910 97:889 98:933 99:874 100:848 101:814 102:859 103:850 104:884 105:879 106:877 107:836 108:854 109:827 110:837 111:836 112:820 113:839 114:835 115:856 116:772 117:810 118:773 119:721 120:752 121:757 122:762 123:764 124:725 125:737 126:666 127:660 128:714 129:731 130:699 131:620 132:688 133:669 134:629 135:624 136:657 137:633 138:575 139:605 140:583 141:626 142:579 143:601 144:563 145:529 146:488 147:533 148:509 149:489 150:494 151:472 152:481 153:434 154:444 155:442 156:445 157:421 158:458 159:431 160:369 161:428 162:374 163:418 164:383 165:393 166:358 167:371 168:339 169:323 170:329 171:322 172:316 173:338 174:302 175:283 176:286 177:319 178:298 179:260 180:263 181:251 182:260 183:226 184:218 185:238 186:221 187:245 188:233 189:230 190:198 191:217 192:208 193:192 194:204 195:181 196:185 197:172 198:175 199:182 200:156 201:150 202:183 203:170 204:139 205:140 206:151 207:133 208:138 209:129 210:137 211:129 212:105 213:112 214:104 215:133 216:108 217:113 218:104 219:102 220:98 221:88 222:92 223:88 224:98 225:98 226:90 227:90 228:93 229:66 230:77 231:54 232:61 233:72 234:63 235:67 236:70 237:51 238:49 239:60 240:51 241:52 242:53 243:57 244:50 245:51 246:50 247:41 248:44 249:38 250:47 251:26 252:26 253:31 254:32 255:36 256:29 257:33 258:37 259:22 260:30 261:20 262:37 263:22 264:26 265:19 266:23 267:25 268:34 269:22 270:19 271:21 272:22 273:13 274:17 275:13 276:18 277:15 278:21 279:15 280:17 281:16 282:11 283:14 284:15 285:7 286:13 287:5 288:18 289:5 290:12 291:8 292:11 293:10 294:5 295:8 296:6 297:7 298:7 299:8 300:8 301:9 302:8 303:9 304:3 305:7 306:10 307:6 308:7 309:7 310:4 311:5 312:4 313:3 314:3 315:7 316:6 317:4 318:3 319:2 320:5 321:1 322:1 323:3 324:2 325:2 326:2 327:4 328:2 329:2 330:5 331:1 332:1 333:5 334:3 335:3 336:3 337:1 338:1 340:2 341:2 342:2 343:2 344:3 345:1 346:1 347:1 351:1 352:2 353:2 355:2 357:1 359:1 360:1 362:2 363:1 366:1 369:1 371:1 378:1 379:1 383:1 387:1 389:1 393:1 400:1 416:1 424:1]

Plotting the above counts of turns per game as relative and cumulative frequencies will result in the following graphs:

Relative and cumulative frequency of turns

Relative and cumulative frequency of points

For instance you can see, that if everyone plays aggressively, the winner gets more points at the end of a round: Random vs. aggressive strategy