/**
 * 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);
});