[wip] im tired boss

pkg/server/src/api.ts

@@ -1,17 +1,11 @@
-import { Elysia, t } from "elysia";
-import {
-	getSimplePlayerView,
-	SimpleAction,
-	SimpleConfiguration,
-	SimpleGameState,
-} from "@games/shared/games/simple";
-import dayjs from "dayjs";
-import db from "./db";
-import { liveTable, WsOut, WsIn } from "./table";
+import { Game } from "@games/shared/games";
 import { Human } from "@prisma/client";
+import dayjs from "dayjs";
+import { Elysia, t } from "elysia";
 import { combine } from "kefir";
 import Bus from "kefir-bus";
-import { Game } from "@games/shared/games";
+import db from "./db";
+import { liveTable, WsIn, WsOut } from "./table";
 
 export const WS = Bus<
 	{
@@ -96,18 +90,14 @@ const api = new Elysia({ prefix: "/api" })
 				presence: "joined",
 			});
 
-			table.outputs.playersPresent.onValue((players) =>
-				send({ players })
+			Object.entries(table.outputs.global).forEach(([type, stream]) =>
+				stream.onValue((v) => send({ [type]: v }))
 			);
-			table.outputs.playersReady
-				.skipDuplicates()
-				.onValue((readys) => send({ playersReady: readys }));
 
 			combine(
 				[table.outputs.gameState],
 				[table.outputs.gameImpl],
-				(state, { game: Game }) =>
-					state && game.getView({ config, state, humanKey })
+				(state, game: Game) => state && game.getView({ state, humanKey })
 			)
 				.toProperty()
 				.onValue((view) => send({ view }));

pkg/server/src/table.ts

@@ -1,8 +1,9 @@
+import GAMES, { Game, GameKey } from "@games/shared/games";
+import { isEmpty, multiScan, ValueWithin } from "@games/shared/kefir";
 import { t } from "elysia";
 import { combine, pool, Property } from "kefir";
 import Bus, { type Bus as TBus } from "kefir-bus";
-import { transform } from "@games/shared/kefir";
-import GAMES, { Game, GameKey } from "@games/shared/games";
+import { log } from "./logging";
 
 export const WsOut = t.Object({
 	players: t.Optional(t.Array(t.String())),
@@ -18,52 +19,74 @@ export const WsIn = t.Union([
 export type TWsIn = typeof WsIn.static;
 
 type Attributed = { humanKey: string };
-type TablePayload<GameConfig, GameState, GameAction> = {
+type TablePayload<
+	GameConfig = unknown,
+	GameView = unknown,
+	GameAction = unknown
+> = {
 	inputs: {
 		connectionChanges: TBus<
-			Attributed & { presence: "joined" | "left" },
+			Attributed & {
+				presence: "joined" | "left";
+			},
 			never
 		>;
 
-		readys: TBus<Attributed & { ready: boolean }, any>;
+		readys: TBus<
+			Attributed & {
+				ready: boolean;
+			},
+			any
+		>;
 		actions: TBus<Attributed & GameAction, any>;
 		quits: TBus<Attributed, any>;
 	};
 	outputs: {
+		global: {
 			playersPresent: Property<string[], any>;
-		playersReady: Property<{ [key: string]: boolean } | null, any>;
+			playersReady: Property<
+				{
+					[key: string]: boolean;
+				} | null,
+				any
+			>;
 			gameConfig: Property<GameConfig | null, any>;
-		gameImpl: Property<Game, unknown>;
-		gameState: Property<GameState | null, any>;
+		};
+		player: {
+			[key: string]: {
+				view: Property<GameView, any>;
+			};
+		};
 	};
 };
 
 const tables: {
-	[key: string]: TablePayload<unknown, unknown, unknown>;
+	[key: string]: TablePayload;
 } = {};
 
 export const liveTable = <
-	GameConfig extends { game: string },
+	GameConfig extends {
+		game: GameKey;
+		players: string[];
+	},
 	GameState,
-	GameAction
+	GameAction extends Attributed
 >(
 	key: string
 ) => {
 	if (!(key in tables)) {
-		const inputs: TablePayload<
-			GameConfig,
-			GameState,
-			GameAction
-		>["inputs"] = {
+		const inputs: TablePayload<GameConfig, GameState, GameAction>["inputs"] = {
 			connectionChanges: Bus(),
 			readys: Bus(),
 			actions: Bus(),
 			quits: Bus(),
 		};
 		const { connectionChanges, readys, actions, quits } = inputs;
-		quits.log("quits");
-		// =======
 
+		// =======
+		const playerStreams = {};
+
+		// players who have at least one connection to the room
 		const playersPresent = connectionChanges
 			.scan((prev, evt) => {
 				if (evt.presence == "left" && prev[evt.humanKey] == 1) {
@@ -73,8 +96,7 @@ export const liveTable = <
 				return {
 					...prev,
 					[evt.humanKey]:
-						(prev[evt.humanKey] ?? 0) +
-						(evt.presence == "joined" ? 1 : -1),
+						(prev[evt.humanKey] ?? 0) + (evt.presence == "joined" ? 1 : -1),
 				};
 			}, {} as { [key: string]: number })
 			.map((counts) => Object.keys(counts))
@@ -82,47 +104,47 @@ export const liveTable = <
 
 		const gameEnds = quits.map((_) => null);
 
-		const gameStarts = pool<null, any>();
-		const playersReady = transform(
-			null as { [key: string]: boolean } | null,
+		const playersReady = multiScan(
+			null as {
+				[key: string]: boolean;
+			} | null,
 			[
 				playersPresent,
-				(prev, players: string[]) =>
-					Object.fromEntries(
-						players.map((p) => [p, prev?.[p] ?? false])
-					),
+				(prev, players: ValueWithin<typeof playersPresent>) =>
+					Object.fromEntries(players.map((p) => [p, prev?.[p] ?? false])),
 			],
 			[
 				readys,
-				(prev, evt: { humanKey: string; ready: boolean }) =>
+				(prev, evt: ValueWithin<typeof readys>) =>
 					prev?.[evt.humanKey] != null
-						? { ...prev, [evt.humanKey]: evt.ready }
+						? {
+								...prev,
+								[evt.humanKey]: evt.ready,
+						  }
 						: prev,
 			],
-			[gameStarts, () => null],
+			[gameEnds, () => null],
 			[
-				combine([gameEnds], [playersPresent], (_, players) => players),
-				(_, players: string[]) =>
+				playersPresent.sampledBy(gameEnds),
+				(_, players: ValueWithin<typeof playersPresent>) =>
 					Object.fromEntries(players.map((p) => [p, false])),
 			]
 		)
 			.toProperty()
 			.log("playersReady");
 
-		gameStarts.plug(
-			playersReady
+		const gameStarts = playersReady
 			.filter(
 				(pr) =>
 					Object.values(pr ?? {}).length > 0 &&
 					Object.values(pr!).every((ready) => ready)
 			)
 			.map((_) => null)
-				.log("gameStarts")
-		);
+			.log("gameStarts");
 
 		const gameConfigPool = pool<
 			{
-				game: string;
+				game: GameKey;
 				players: string[];
 			},
 			any
@@ -131,16 +153,16 @@ export const liveTable = <
 
 		const gameImpl = gameConfig
 			.filter((cfg) => cfg.game in GAMES)
-			.map((config) => ({ config, game: GAMES[config.game as GameKey] }))
+			.map((config) => GAMES[config.game as GameKey](config))
 			.toProperty();
 
-		const gameState = transform(
+		const gameState = multiScan(
 			null as GameState | null,
 			[
 				// initialize game state when started
 				gameImpl.sampledBy(gameStarts),
-				(prev, { config, game }) =>
-					prev == null ? game.init(config) : prev,
+				(prev, game: ValueWithin<typeof gameImpl>) =>
+					prev || (game.init() as GameState),
 			],
 			[
 				combine([actions], [gameImpl], (action, impl) => ({
@@ -149,19 +171,19 @@ export const liveTable = <
 				})),
 				(
 					prev,
-					evt: {
-						action: Attributed & GameAction;
-						config: GameConfig;
+					{
+						game,
+						action,
+					}: {
 						game: Game;
+						action: Attributed & GameAction;
 					}
 				) =>
-					prev != null
-						? (evt.game.resolveAction({
-								config: evt.config,
+					prev &&
+					(game.resolveAction({
 						state: prev,
-								action: evt.action,
-						  }) as GameState)
-						: prev,
+						action,
+					}) as GameState),
 			],
 			[quits, () => null]
 		).toProperty();
@@ -172,13 +194,17 @@ export const liveTable = <
 			.toProperty();
 
 		gameConfigPool.plug(
-			transform(
-				{ game: "simple", players: [] as string[] },
+			multiScan(
+				{
+					game: "simple",
+					players: [] as string[],
+				},
 				[
-					playersPresent.filterBy(
-						gameIsActive.map((active) => !active)
-					),
-					(prev, players) => ({ ...prev, players }),
+					playersPresent.filterBy(gameIsActive.map((active) => !active)),
+					(prev, players) => ({
+						...prev,
+						players,
+					}),
 				]
 				// TODO: Add player defined config changes
 			)
@@ -187,23 +213,25 @@ export const liveTable = <
 		tables[key] = {
 			inputs,
 			outputs: {
+				global: {
 					playersPresent,
 					playersReady: playersReady.toProperty(),
 					gameConfig: gameConfig as Property<unknown, any>,
-				gameState: gameState as Property<unknown, any>,
-				gameImpl,
+				},
+				player: {},
 			},
 		};
 
-		// cleanup
-		tables[key].outputs.playersPresent
-			.debounce(30000, { immediate: false })
-			.filter((players) => players.length === 0)
-			.skip(1)
-			.onValue((_) => {
-				console.log("DELETING LIVE TABLE");
+		// cleanup: delete the room if no one is in it for 30 seconds
+		tables[key].outputs.global.playersPresent
+			.skip(1) // don't consider the empty room upon creation
+			.debounce(30000)
+			.filter(isEmpty)
+			.onValue(() => {
+				log("DELETING LIVE TABLE");
 				delete tables[key];
 			});
 	}
+
 	return tables[key] as TablePayload<GameConfig, GameState, GameAction>;
 };

pkg/shared/games/index.ts

@@ -1,8 +1,6 @@
-import * as renaissance from "./renaissance";
 import simple from "./simple";
 
 export type Game<
-	C extends { game: string } = { game: string },
 	S = unknown,
 	A extends { humanKey: string } = { humanKey: string },
 	E extends { error: any } = { error: any },
@@ -10,16 +8,18 @@ export type Game<
 > = {
 	title: string;
 	rules: string;
-	init: (config: C) => S;
-	resolveAction: (p: { config: C; state: S; action: A }) => S | E;
-	getView: (p: { config: C; state: S; humanKey: string }) => V;
-	resolveQuit: (p: { config: C; state: S; humanKey: string }) => S;
+	init: () => S;
+	resolveAction: (p: { state: S; action: A }) => S | E;
+	getView: (p: { state: S; humanKey: string }) => V;
+	resolveQuit: (p: { state: S; humanKey: string }) => S;
 };
 
 export const GAMES = {
 	// renaissance,
 	simple,
-} satisfies { [key: string]: Game<any, any, any, any, any> };
+} satisfies {
+	[key: string]: (config: { game: string; players: string[] }) => Game;
+};
 export default GAMES;
 
 export type GameKey = keyof typeof GAMES;

pkg/shared/games/simple.ts

@@ -22,7 +22,10 @@ export type SimplePlayerView = {
 	myHand: Hand<Card>;
 };
 
-export type SimpleAction = { type: "draw" } | { type: "discard"; card: Card };
+export type SimpleAction = { humanKey: string } & (
+	| { type: "draw" }
+	| { type: "discard"; card: Card }
+);
 
 export const newSimpleGameState = (
 	config: SimpleConfiguration
@@ -55,14 +58,13 @@ export const getSimplePlayerView = (
 export const resolveSimpleAction = ({
 	config,
 	state,
-	humanKey,
 	action,
 }: {
 	config: SimpleConfiguration;
 	state: SimpleGameState;
-	humanKey: string;
 	action: SimpleAction;
 }): SimpleGameState => {
+	const { humanKey } = action;
 	const playerHand = state.playerHands[humanKey];
 	if (playerHand == null) {
 		throw new Error(
@@ -105,18 +107,18 @@ export const resolveSimpleAction = ({
 
 type SimpleError = { error: "whoops!" };
 
-export default {
+export default (config: SimpleConfiguration) =>
+	({
 		title: "Simple",
 		rules: "You can draw, or you can discard. Then your turn is up.",
-	init: newSimpleGameState,
-	resolveAction: resolveSimpleAction,
-	getView: ({ config, state, humanKey }) =>
+		init: () => newSimpleGameState(config),
+		resolveAction: (p) => resolveSimpleAction({ ...p, config }),
+		getView: ({ state, humanKey }) =>
 			getSimplePlayerView(config, state, humanKey),
 		resolveQuit: () => null,
-} satisfies Game<
-	SimpleConfiguration,
+	} satisfies Game<
 		SimpleGameState,
 		SimpleAction,
 		SimpleError,
 		SimplePlayerView
->;
+	>);

pkg/shared/kefir.ts

@@ -1,12 +1,18 @@
 import { merge, Observable } from "kefir";
 
-export const transform = <
-	T,
-	Mutations extends [Observable<any, any>, (prev: T, evt: any) => T][]
->(
-	initValue: T,
-	...mutations: Mutations
-): Observable<T, unknown> =>
+export type ValueWithin<O extends Observable<any, any>> = Parameters<
+	Parameters<O["map"]>[0]
+>[0];
+
+type Mutation<A, O extends Observable<any, any>> = [
+	O,
+	(prev: A, value: ValueWithin<O>) => A
+];
+
+export const multiScan = <A, M extends Mutation<A, any>[]>(
+	initValue: A,
+	...mutations: M
+): Observable<A, any> =>
 	merge(
 		mutations.map(([source, mutation]) =>
 			source.map((event) => ({ event, mutation }))
@@ -27,3 +33,5 @@ export const partition =
 			])
 		);
 	};
+
+export const isEmpty = (container: { length: number }) => container.length == 0;