benjivers/val Public Public: anyone can read this; the crew can change it.

/**

 * The engine's body contract, checked against this game's own snapshot rather

 * than one a test made up: a game that renames `alive` passes every render

 * test and draws every enemy as a corpse. It lives here, not in `engine/`,

 * because it needs the game.

 */

import { expect, test } from "bun:test";

import { valGame } from "./arena.ts";

import { snapshotProblems } from "./engine/body.ts";

import { newMatch } from "./match.ts";

test("every body and `me` in a real snapshot of a running match fits the contract", () => {

  const state = newMatch(7);

  const game = valGame(state, () => {});

  for (let i = 0; i < 90; i++) game.step(state, 1 / 30);

  let bodies = 0;

  for (const viewer of state.players) {

    const seen = state.players.filter((p) => p.id === viewer.id || game.visible(state, viewer, p));

    const snap = game.snapshot(state, viewer, seen) as { me: unknown; players: unknown[] };

    expect(snapshotProblems(snap)).toEqual([]);

    bodies += snap.players.length;

  }

  expect(bodies).toBeGreaterThan(state.players.length);

});