> The contest is now over. [Coward][1] is the winner. Suddenly zombies appear! OH NOES! In this king-of-the-hill challenge, you must create a bot to survive the zombie apocalypse. Or at least, hold out for as long as possible. At the start of the game, 50 instances of each entry will be placed randomly in a large [toroidal][2] play area - that is, it appears to be square, but wraps around. The size of the play area will vary depending on the number of entries, but initially 6% of squares will be occupied. Each competitor starts with 3 bullets. At the beginning of each turn, a zombie will rise from the ground at a random location, destroying whatever was above it. Any player who is next to a zombie at the start of their turn will become a zombie. For each living player, their code will then be called. It will receive a [PlayerContext][3] object, containing information on their current status, and their surroundings. Each player can see for 8 squares in any direction. The player must choose to either move (staying still is a valid movement), by returning a `Move`, or shoot a nearby person or zombie, by returning a `Shoot`. Your gun has a maximum range of 5 squares. Since you are within your gun's range you *can* shoot yourself, provided you have bullets left. If two players shoot each other, they both die. If two players attempt to move onto the same square, they will fail, and will both return to the square they started from. If there are still conflicts, this will be repeated until there are no conflicts, which may mean everyone is back where they started. If a player dies from a gunshot, their dead body will remain, and forms a permanent barrier. Any bullets they were carrying remain on their person, and can be scavenged by players in adjacent squares. If there are multiple players occupying the squares adjacent to a dead body, then the bullets will be shared between them, but any remainder will be lost. If a player becomes a zombie, then their bullets are lost. Zombies will mindlessly walk towards the nearest living player. Entries are scored on how long their longest-surviving player survives. ##Entries## A control program is available at https://github.com/jamespic/zombies. Simply clone it, and run `mvn compile exec:java`. To be eligible, entries must be written in a JVM language, must be portable, and must be possible to build from Maven with no special set-up. This is to ensure that competitors do not need to install multiple run-time environments to test their bots against competitors. Sample entries are currently available in the following languages: - [Java 7][4] - see also [a more complex example][5], and [the code for zombies][6] - [Scala 2.11.1][7] - [Javascript (via Rhino)][8] - [Python (via Jython 2.7 beta 2)][9] - [Ruby (via JRuby 1.7.13)][10] - [Clojure 1.5.1][11] - [Frege][12] (a bit like Haskell - [here's another example][13]) If you would like to compete in a language that is not listed, you can post a comment requesting it, and I will investigate the possibility of integrating your chosen language into the control program. Or, if you are impatient, you can submit a pull request to the control program. Only one instance (in the Java sense of the word) will be created for each entry. This Java instance will be called multiple times per turn - once for each surviving player. ##API## <!-- language: lang-java --> package zombie // You implement this. Your entry should be in package `player` interface Player { Action doTurn(PlayerContext context) } // These already exist class PlayerContext { // A square array, showing the area around you, with you at the centre // playFields is indexed by x from West to East, then y from North to South PlayerId[][] getPlayField() int getBullets() // Current bullets available int getGameClock() // Current turn number PlayerId getId() // Id of the current player instance int getX() // Your current x co-ordinate int getY() // Your current y co-ordinate int getBoardSize() // The size of the current playing field Set<PlayerId> shootablePlayers() // A helper function that identifies players in range. } class PlayerId { String getName() // The name of the entrant that owns this player int getNumber() // A unique number, assigned to this player } // Don't implement this. Use either `Move` or `Shoot` interface Action {} enum Move implements Action { NORTHWEST, NORTH, NORTHEAST, EAST, STAY, WEST, SOUTHEAST, SOUTH, SOUTHWEST; static move randomMove(); } class Shoot implements Action { Shoot(PlayerId target); } ##Additional Rules## Each entry must have a unique name, in order to work correctly with the control program. Entries should not attempt to tamper with other entrants, or with the control program, or otherwise take advantage of the run-time environment to "break the fourth wall", and gain an advantage that would not be available in a "real" zombie apocalypse. Communication between players is allowed. The winner is the entrant whose bot has the highest score in a test I will run on the 3rd of August 2014. ##Final Results## The final results are in! Coward is the winner! On 2nd August, I ran 19 rounds of the control program, and ranked each player according to their median score. The results were as follows: Coward: 4298 Fox: 3214 Shotguneer: 2471 Cocoon: 1834 JohnNash: 1240 HuddleWolf: 1112 Sokie: 1090 SOS: 859 GordonFreeman: 657 Jack: 657 Waller: 366 SuperCoward: 269 MoveRandomly: 259 StandStill: 230 Vortigaunt: 226 ThePriest: 223 Bee: 61 HideyTwitchy: 52 ZombieHater: 31 Gunner: 20 ZombieRightsActivist: 16 SunTzu: 11 EmoWolfWithAGun: 0 The last round will be available to watch soon. ##Run-by-run results## The individual results of each of the 19 runs were: #Run at 03-Aug-2014 14:45:35# Bee: 21 Cocoon: 899 Coward: 4608 EmoWolfWithAGun: 0 Fox: 3993 GordonFreeman: 582 Gunner: 18 HideyTwitchy: 37 HuddleWolf: 2836 Jack: 839 JohnNash: 956 MoveRandomly: 310 SOS: 842 Shotguneer: 2943 Sokie: 937 StandStill: 250 SunTzu: 3 SuperCoward: 318 ThePriest: 224 Vortigaunt: 226 Waller: 258 ZombieHater: 41 ZombieRightsActivist: 10 #Run at 03-Aug-2014 14:56:48# Bee: 97 Cocoon: 3073 Coward: 5699 EmoWolfWithAGun: 0 Fox: 4305 GordonFreeman: 1252 Gunner: 24 HideyTwitchy: 25 HuddleWolf: 3192 Jack: 83 JohnNash: 1195 MoveRandomly: 219 SOS: 884 Shotguneer: 3751 Sokie: 1234 StandStill: 194 SunTzu: 69 SuperCoward: 277 ThePriest: 884 Vortigaunt: 564 Waller: 1281 ZombieHater: 10 ZombieRightsActivist: 2 #Run at 03-Aug-2014 15:01:37# Bee: 39 Cocoon: 2512 Coward: 2526 EmoWolfWithAGun: 0 Fox: 2687 GordonFreeman: 852 Gunner: 21 HideyTwitchy: 91 HuddleWolf: 1112 Jack: 1657 JohnNash: 944 MoveRandomly: 312 SOS: 660 Shotguneer: 1067 Sokie: 1356 StandStill: 169 SunTzu: 8 SuperCoward: 351 ThePriest: 223 Vortigaunt: 341 Waller: 166 ZombieHater: 25 ZombieRightsActivist: 47 #Run at 03-Aug-2014 15:08:27# Bee: 27 Cocoon: 2026 Coward: 3278 EmoWolfWithAGun: 0 Fox: 2677 GordonFreeman: 611 Gunner: 16 HideyTwitchy: 11 HuddleWolf: 1694 Jack: 600 JohnNash: 1194 MoveRandomly: 48 SOS: 751 Shotguneer: 5907 Sokie: 1233 StandStill: 62 SunTzu: 9 SuperCoward: 252 ThePriest: 173 Vortigaunt: 107 Waller: 276 ZombieHater: 53 ZombieRightsActivist: 38 #Run at 03-Aug-2014 15:14:01# Bee: 26 Cocoon: 1371 Coward: 5121 EmoWolfWithAGun: 0 Fox: 3878 GordonFreeman: 464 Gunner: 29 HideyTwitchy: 130 HuddleWolf: 955 Jack: 101 JohnNash: 698 MoveRandomly: 269 SOS: 1314 Shotguneer: 2444 Sokie: 3217 StandStill: 233 SunTzu: 10 SuperCoward: 269 ThePriest: 318 Vortigaunt: 266 Waller: 494 ZombieHater: 49 ZombieRightsActivist: 9 #Run at 03-Aug-2014 15:19:43# Bee: 25 Cocoon: 2098 Coward: 4855 EmoWolfWithAGun: 0 Fox: 4081 GordonFreeman: 227 Gunner: 43 HideyTwitchy: 28 HuddleWolf: 2149 Jack: 1887 JohnNash: 1457 MoveRandomly: 117 SOS: 1068 Shotguneer: 4272 Sokie: 636 StandStill: 53 SunTzu: 9 SuperCoward: 209 ThePriest: 220 Vortigaunt: 227 Waller: 366 ZombieHater: 19 ZombieRightsActivist: 49 #Run at 03-Aug-2014 15:24:03# Bee: 46 Cocoon: 682 Coward: 3588 EmoWolfWithAGun: 0 Fox: 4169 GordonFreeman: 764 Gunner: 13 HideyTwitchy: 21 HuddleWolf: 842 Jack: 1720 JohnNash: 1260 MoveRandomly: 259 SOS: 636 Shotguneer: 777 Sokie: 586 StandStill: 75 SunTzu: 6 SuperCoward: 390 ThePriest: 189 Vortigaunt: 208 Waller: 334 ZombieHater: 61 ZombieRightsActivist: 20 #Run at 03-Aug-2014 15:29:49# Bee: 90 Cocoon: 516 Coward: 4298 EmoWolfWithAGun: 0 Fox: 1076 GordonFreeman: 581 Gunner: 8 HideyTwitchy: 87 HuddleWolf: 4298 Jack: 4715 JohnNash: 727 MoveRandomly: 102 SOS: 859 Shotguneer: 2471 Sokie: 2471 StandStill: 427 SunTzu: 24 SuperCoward: 159 ThePriest: 359 Vortigaunt: 94 Waller: 398 ZombieHater: 54 ZombieRightsActivist: 21 #Run at 03-Aug-2014 15:36:50# Bee: 18 Cocoon: 3127 Coward: 3124 EmoWolfWithAGun: 0 Fox: 5094 GordonFreeman: 255 Gunner: 43 HideyTwitchy: 17 HuddleWolf: 1078 Jack: 272 JohnNash: 1270 MoveRandomly: 55 SOS: 723 Shotguneer: 3126 Sokie: 1388 StandStill: 179 SunTzu: 7 SuperCoward: 45 ThePriest: 519 Vortigaunt: 172 Waller: 200 ZombieHater: 45 ZombieRightsActivist: 8 #Run at 03-Aug-2014 15:40:59# Bee: 78 Cocoon: 1834 Coward: 4521 EmoWolfWithAGun: 0 Fox: 1852 GordonFreeman: 657 Gunner: 7 HideyTwitchy: 2 HuddleWolf: 969 Jack: 895 JohnNash: 1596 MoveRandomly: 277 SOS: 694 Shotguneer: 1397 Sokie: 844 StandStill: 325 SunTzu: 7 SuperCoward: 192 ThePriest: 148 Vortigaunt: 369 Waller: 232 ZombieHater: 16 ZombieRightsActivist: 17 #Run at 03-Aug-2014 15:44:22# Bee: 23 Cocoon: 2638 Coward: 2269 EmoWolfWithAGun: 0 Fox: 2067 GordonFreeman: 730 Gunner: 21 HideyTwitchy: 60 HuddleWolf: 763 Jack: 1469 JohnNash: 1494 MoveRandomly: 273 SOS: 3181 Shotguneer: 3181 Sokie: 653 StandStill: 450 SunTzu: 19 SuperCoward: 272 ThePriest: 215 Vortigaunt: 299 Waller: 510 ZombieHater: 62 ZombieRightsActivist: 16 #Run at 03-Aug-2014 15:48:03# Bee: 97 Cocoon: 2009 Coward: 2798 EmoWolfWithAGun: 0 Fox: 1907 GordonFreeman: 958 Gunner: 22 HideyTwitchy: 93 HuddleWolf: 925 Jack: 288 JohnNash: 476 MoveRandomly: 422 SOS: 3723 Shotguneer: 2076 Sokie: 1090 StandStill: 134 SunTzu: 92 SuperCoward: 141 ThePriest: 470 Vortigaunt: 216 Waller: 340 ZombieHater: 32 ZombieRightsActivist: 20 #Run at 03-Aug-2014 16:03:38# Bee: 121 Cocoon: 501 Coward: 9704 EmoWolfWithAGun: 0 Fox: 3592 GordonFreeman: 588 Gunner: 20 HideyTwitchy: 54 HuddleWolf: 749 Jack: 1245 JohnNash: 1345 MoveRandomly: 451 SOS: 835 Shotguneer: 1548 Sokie: 589 StandStill: 166 SunTzu: 11 SuperCoward: 158 ThePriest: 93 Vortigaunt: 246 Waller: 1350 ZombieHater: 18 ZombieRightsActivist: 11 #Run at 03-Aug-2014 16:10:24# Bee: 66 Cocoon: 1809 Coward: 3295 EmoWolfWithAGun: 0 Fox: 3214 GordonFreeman: 1182 Gunner: 15 HideyTwitchy: 52 HuddleWolf: 1514 Jack: 101 JohnNash: 745 MoveRandomly: 211 SOS: 862 Shotguneer: 6335 Sokie: 1504 StandStill: 384 SunTzu: 14 SuperCoward: 259 ThePriest: 244 Vortigaunt: 262 Waller: 1356 ZombieHater: 24 ZombieRightsActivist: 20 #Run at 03-Aug-2014 16:28:05# Bee: 61 Cocoon: 692 Coward: 11141 EmoWolfWithAGun: 0 Fox: 1955 GordonFreeman: 1234 Gunner: 42 HideyTwitchy: 24 HuddleWolf: 1862 Jack: 609 JohnNash: 1579 MoveRandomly: 167 SOS: 958 Shotguneer: 11141 Sokie: 284 StandStill: 422 SunTzu: 66 SuperCoward: 121 ThePriest: 207 Vortigaunt: 128 Waller: 259 ZombieHater: 22 ZombieRightsActivist: 7 #Run at 03-Aug-2014 16:32:10# Bee: 207 Cocoon: 4414 Coward: 2670 EmoWolfWithAGun: 0 Fox: 978 GordonFreeman: 620 Gunner: 19 HideyTwitchy: 135 HuddleWolf: 962 Jack: 657 JohnNash: 1200 MoveRandomly: 147 SOS: 687 Shotguneer: 2258 Sokie: 2433 StandStill: 249 SunTzu: 49 SuperCoward: 1056 ThePriest: 602 Vortigaunt: 326 Waller: 593 ZombieHater: 31 ZombieRightsActivist: 10 #Run at 03-Aug-2014 16:38:56# Bee: 265 Cocoon: 2231 Coward: 4228 EmoWolfWithAGun: 0 Fox: 4737 GordonFreeman: 532 Gunner: 9 HideyTwitchy: 75 HuddleWolf: 2375 Jack: 1237 JohnNash: 1249 MoveRandomly: 109 SOS: 860 Shotguneer: 6470 Sokie: 1096 StandStill: 126 SunTzu: 15 SuperCoward: 393 ThePriest: 133 Vortigaunt: 184 Waller: 257 ZombieHater: 32 ZombieRightsActivist: 12 #Run at 03-Aug-2014 16:52:16# Bee: 67 Cocoon: 1534 Coward: 9324 EmoWolfWithAGun: 0 Fox: 2458 GordonFreeman: 1019 Gunner: 24 HideyTwitchy: 72 HuddleWolf: 601 Jack: 399 JohnNash: 1366 MoveRandomly: 275 SOS: 506 Shotguneer: 1007 Sokie: 475 StandStill: 230 SunTzu: 135 SuperCoward: 361 ThePriest: 61 Vortigaunt: 112 Waller: 4106 ZombieHater: 12 ZombieRightsActivist: 22 #Run at 03-Aug-2014 17:03:04# Bee: 26 Cocoon: 1159 Coward: 7796 EmoWolfWithAGun: 0 Fox: 3948 GordonFreeman: 878 Gunner: 3 HideyTwitchy: 17 HuddleWolf: 1490 Jack: 513 JohnNash: 1240 MoveRandomly: 487 SOS: 1460 Shotguneer: 1481 Sokie: 832 StandStill: 457 SunTzu: 8 SuperCoward: 480 ThePriest: 527 Vortigaunt: 171 Waller: 3729 ZombieHater: 30 ZombieRightsActivist: 10 [1]: http://codegolf.stackexchange.com/questions/34833/save-the-last-bullet-for-yourself#35021 [2]: http://en.wikipedia.org/wiki/Torus#Topology [3]: https://github.com/jamespic/zombies/blob/master/src/main/java/zombie/PlayerContext.java [4]: https://github.com/jamespic/zombies/blob/master/src/main/java/player/StandStill.java [5]: https://github.com/jamespic/zombies/blob/master/src/main/java/player/Gunner.java [6]: https://github.com/jamespic/zombies/blob/master/src/main/java/zombie/Dead.java#L14 [7]: https://github.com/jamespic/zombies/blob/master/src/main/scala/example/ScalaExample.scala [8]: https://github.com/jamespic/zombies/blob/master/src/main/resources/js-example.js [9]: https://github.com/jamespic/zombies/blob/master/src/main/resources/py-example.py [10]: https://github.com/jamespic/zombies/blob/master/src/main/resources/rb-example.rb [11]: https://github.com/jamespic/zombies/blob/master/src/main/resources/clj-example.clj [12]: https://github.com/jamespic/zombies/blob/master/src/main/frege/PureFregeExample.fr [13]: https://github.com/jamespic/zombies/blob/master/src/main/frege/IOFregeExample.fr