Server is running on uwcs.co.uk:8037 All messages are sent via TCP, each message is sent followed by a newline, each piece of a message is delimited by spaces.

The server is currently on a tick time of 500ms, if there are issues with this (such as latency for certain players) then it may be increased. The turn limit is currently set at 1000, if too many games are reaching this then it may be increased.

Bombs: When a bomb is placed (using ACTION BOMB) it is placed on the square the player is currently standing on. You may not move onto a square with a bomb on it although you can move off them. A bomb will stay in place for 4 turns and then explode; when it explodes it will blast in each compass direction up to 3 squares away. If there is a destructable rock in the way then it will be destroyed but will also stop the explosion in that direction. Any players who are hit by an explosion will die.

Scoring: Every time a player dies all surviving players gain one point. If you are the last player in the game you gain an additional point.

Messages:

Server -> Client:

• INIT

  This starts the init phase at the start of each game.

• MAP <rows> <cols>

  This gives the initial state of the map immediately after the init phase. This is followd by a number of lines (stated by <rows>), each containing a number of pieces of data (stated by <cols>) which describe the map:

  • 0: Passable terrain, you may move here freely.
  • 1: Destructable terrain, you may not move here but it may be destroyed by explosions turning it into type 0 terrain.
  • 2: Indestrucable terrain, you can't move here, nor can they be destroyed.

• PLAYERS <num>

  This will immediately follow the MAP message and states how many players are in the new game, this will be followed by <num> lines of data in the format: <name> <row> <col> This shows the name of the player and their starting position in the game. This coordinate is zero indexed.

• TICK <num>

  This states that a new tick has started, you can now send any action you would like to take in this tick.

• ACTIONS <num>

  This will be sent at the end of a tick and will be followed by <num> lines, each containing the name of a player and the action they took in the format <name> <action>. Actions may be: UP, DOWN, LEFT, RIGHT, BOMB.

• DEAD <num>

  This states that <num> players have died this tick, this will be followed by <num> lines, each containing the name of a player who has died this tick.

• END

  This states that the game has ended. The game will end when there is only one surviving player or when the turn limit has been reached.

• SCORES <num>

  Shows <num> lines in the format <name> <points> stating how many points each player gained this game.

Client -> Server:

• REGISTER <name> <password>

  This states your intent to take part in a game, your name and password will be automatically registered the first time you use them, from then on you will recieve E_WRONG_PASS if the password does not mach the previously recorded one. Note that the server has little to no security on the password so use a disposable one.

• ACTION <action>

  This states that you wish to make an action, valid actions are: UP, DOWN, LEFT, RIGHT, BOMB You may only do one action per tick. The server will echo your action back to you once it has successfully received it, as can be seen in the example below. If your move is not valid you will receive E_INVALID_ACTION, if you have sent multiple actions you will receive E_TOO_MANY_ACTIONS, or if you are not registered as playing in the game you will receive E_NOT_PLAYING.

Example game:

< INIT
> REGISTER alice supersekritpassword
< REGISTERED
< MAP 5 5
< 1 1 1 0 0
< 0 2 0 2 0
< 1 0 1 1 1
< 1 2 0 2 0
< 1 0 0 0 1
< PLAYERS 2
< alice 0 4
< bob 4 2
< TICK 1
> ACTION LEFT
< LEFT
< ACTIONS 2
< alice LEFT
< bob UP
< TICK 2
> ACTION BOMB
< BOMB
> ACTIONS 2
> alice BOMB
> bob BOMB
> TICK 3
< ACTION RIGHT
> RIGHT
> ACTIONS 2
> alice RIGHT
> bob DOWN
> TICK 4
< ACTION DOWN
> DOWN
> ACTIONS 1
> alice DOWN
> TICK 5
> TICK 6
> DEAD 1
> bob
> END
> SCORES 2
> alice 1
> bob 0

License

MIT License

Copyright (c) 2018 University of Warwick Computing Society

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.