syncer/packages/shared/test/dead-air.test.mjs

import assert from "node:assert/strict";
import test from "node:test";
import {
  DEAD_AIR_ARTIFACT_SPAWN,
  DEAD_AIR_EXTRACTION,
  DEAD_AIR_SNAPSHOT_RATE,
  DEAD_AIR_TICK_RATE,
  DEAD_AIR_WARDEN_ID_BASE,
  deadAirGame,
} from "../dist/index.js";

function input(overrides = {}) {
  return {
    forward: 0,
    strafe: 0,
    yaw: 0,
    pitch: 0,
    fire: false,
    sprint: false,
    reload: false,
    interact: false,
    toggleFlashlight: false,
    throwDecoy: false,
    ...overrides,
  };
}

test("DEAD AIR runs through the generic multiplayer contract", () => {
  assert.equal(deadAirGame.tickRateHz, DEAD_AIR_TICK_RATE);
  assert.equal(deadAirGame.snapshotRateHz, DEAD_AIR_SNAPSHOT_RATE);
  const server = deadAirGame.createServer();
  server.addPlayer(1);
  const player = server.currentState.players.find((candidate) => candidate.id === 1);
  player.x = DEAD_AIR_ARTIFACT_SPAWN.x;
  player.z = DEAD_AIR_ARTIFACT_SPAWN.z;

  assert.deepEqual(server.submitInput(1, {
    sequence: 1,
    targetTick: 1,
    observedTick: 0,
    input: input({ interact: true }),
  }), { accepted: true });
  const grabbed = server.step();
  assert.equal(player.carryingArtifact, true);
  assert.ok(grabbed.events.some((event) => event.type === "artifact" && event.action === "grabbed"));

  player.x = DEAD_AIR_EXTRACTION.x;
  player.z = DEAD_AIR_EXTRACTION.z;
  const extracted = server.step();
  assert.equal(player.extractions, 1);
  assert.ok(extracted.events.some((event) => event.type === "artifact" && event.action === "extracted"));
});

test("an occluded warden never appears in snapshots and becomes anonymous sound", () => {
  const server = deadAirGame.createServer();
  server.addPlayer(1);
  const viewer = server.currentState.players.find((player) => player.id === 1);
  const hidden = server.currentState.players.find((player) => player.id === DEAD_AIR_WARDEN_ID_BASE);
  for (const player of server.currentState.players) {
    if (player.bot && player.id !== hidden.id) player.alive = false;
  }
  viewer.x = -25;
  viewer.z = 0;
  viewer.yaw = Math.PI / 2;
  viewer.flashlight = true;
  hidden.x = -10;
  hidden.z = 0;
  hidden.flashlight = false;

  const snapshot = server.createSnapshot(1, 0).state;
  assert.equal(snapshot.players.some((player) => player.id === hidden.id), false);
  assert.equal(JSON.stringify(snapshot).includes(hidden.id.toString()), false);

  const perception = server.createPerceptions(1, [{
    id: 777,
    type: "shot",
    sourceId: hidden.id,
    x: hidden.x,
    z: hidden.z,
    yaw: hidden.yaw,
    pitch: 0,
  }])[0];
  assert.equal(perception.type, "sound");
  assert.equal(perception.cue, "gunshot");
  assert.equal("sourceId" in perception, false);
  assert.equal("x" in perception, false);
  assert.equal("z" in perception, false);
  assert.ok(Number.isInteger(perception.direction));
});

test("private objective coordinates are redacted outside sight", () => {
  const server = deadAirGame.createServer();
  server.addPlayer(1);
  const viewer = server.currentState.players.find((player) => player.id === 1);
  viewer.x = -28;
  viewer.z = 28;
  viewer.yaw = Math.PI;
  viewer.flashlight = false;
  const snapshot = server.createSnapshot(1, 0).state;
  assert.deepEqual(snapshot.artifact, {
    visible: false,
    x: null,
    z: null,
    carrierId: null,
  });
  assert.equal("artifactX" in snapshot, false);
  assert.equal("nextEventId" in snapshot, false);
});

test("visible wardens expose pose but redact combat inventory", () => {
  const server = deadAirGame.createServer();
  server.addPlayer(1);
  const viewer = server.currentState.players.find((player) => player.id === 1);
  const visible = server.currentState.players.find((player) => player.id === DEAD_AIR_WARDEN_ID_BASE);
  viewer.x = -30;
  viewer.z = 30;
  viewer.yaw = Math.PI / 2;
  visible.x = -25;
  visible.z = 30;
  visible.health = 31;
  visible.magazine = 2;
  const replicated = server.createSnapshot(1, 0).state.players.find((player) => player.id === visible.id);
  assert.ok(replicated);
  assert.equal(replicated.x, visible.x);
  assert.equal(replicated.health, null);
  assert.equal(replicated.magazine, null);
  assert.equal(replicated.reserve, null);
});

test("DEAD AIR strafe-right matches the first-person camera's screen right", () => {
  const server = deadAirGame.createServer();
  server.addPlayer(1);
  const player = server.currentState.players.find((candidate) => candidate.id === 1);
  player.x = 0;
  player.z = 25;
  player.yaw = 0;
  assert.deepEqual(server.submitInput(1, {
    sequence: 1,
    targetTick: 1,
    observedTick: 0,
    input: input({ strafe: 1, yaw: 0 }),
  }), { accepted: true });
  server.step();
  assert.ok(player.x < 0, `camera-right at yaw 0 should reduce world x, saw ${player.x}`);
});