Mike Dilger on Nostr: I just whipped up a chess server, running on wss://chorus.mikedilger.com:444/ using ...

I just whipped up a chess server, running on wss://chorus.mikedilger.com:444/ using all ephemeral events, no access control required.

I was having a horrible week, doing huge coding but getting no wins and probably have to throw out my efforts. I really needed a win. So I did this chess thing which was (for me) easy with super rapid progress.

Here is the protocol, anybody can write a client for this. People connect and get paired up and play each other. There is no fancy Elo score matching yet. Nor did I write a client yet. Just the server... which is currently running and listening for chess events tagging this pubkey(hex): dbb45efeb8cc10e6f75fdff7e561e7db39cc7ba6592f4c22e26f3ee36b2e7bc2

(NIP-64 is not related to this work... yet)

Please somebody write a nice client.


// Event kinds (not yet allocated in nostr)
const REQ_TO_PLAY: EventKind = EventKind::Ephemeral(20300);
/*
* {
* "pubkey": <player-asking>,
* "kind": 20300,
* "tags": [
* ["p", <server-pubkey>],
* ],
* "content": "",
* ...
* }
*/

const RESP_TO_PLAY: EventKind = EventKind::Ephemeral(20301);
/*
* {
* "pubkey": <server>,
* "kind": 20301,
* "tags": [
* ["p": <player-asking>],
* ],
* "content": "queued", // 'queued' or 'error:<error>' or 'started:<d-tag-of-game>'
* ...
* }
*
*/

const GAME_STATE: EventKind = EventKind::Ephemeral(20302);
/*
* {
* "pubkey": <server>
* "kind": 20302,
* "tags": [
* ["d": <game-id>],
* ["p": <pubkey-for-white>],
* ["p": <pubkey-for-black>],
* ],
* "content": <FEN>,
* ...
* }
*/

const GAME_MOVE: EventKind = EventKind::Ephemeral(20303);
/*
* {
* "pubkey": <player>,
* "kind": 20303,
* "tags": [
* ["d": <game-id>],
* ["e": <last-game-state-event-being-reacted-to>],
* ["p", <server-pubkey>],
* ["p": <pubkey-for-white>],
* ["p": <pubkey-for-black>],
* ],
* "content": <long-algebraic-move>, // or various other signals like 'quit' TBD.
* ...
* }
*/

const GAME_ERROR: EventKind = EventKind::Ephemeral(20304);
/*
* If the game is known, and the error event came from a player of the game:
* {
* "pubkey": <server>,
* "kind": 20304
* "tags": [
* "e": <event-that-was-in-error>,
* "d": <game-id>, // if relevant (not present if game not found)
* "p": <pubkey-for-white>, // if game not found, this is the author of event reacted to
* "p": <pubkey-for-black>, // only if game was found, this is the other player
* ],
* "content": <error message>
* ...
* }
*
* If the game is not known:
* {
* "pubkey": <server>,
* "kind": 20304
* "tags": [
* ["e": <event-that-was-in-error>],
* ["p": <pubkey-of-error-event>],
* ],
* "content": <error message>
* ...
* }
*/