/**
 * LevelData.js
 * Predefined level map configurations.
 * Each level is a 13×21 grid (rows × cols). Values correspond to TERRAIN enum:
 *   0=EMPTY, 1=BRICK, 2=STEEL, 3=RIVER, 4=FOREST, 5=BASE, 6=BASE_WALL
 *
 * In landscape mode the map is 13 rows × 21 cols.
 * The original 13×13 design sits in the center (cols 4–16),
 * with additional terrain on the flanks (cols 0–3 and cols 17–20).
 *
 * Player spawns at bottom area, enemies spawn from top row.
 * Base (5) is at bottom-center, surrounded by BASE_WALL (6).
 */

const LEVELS = [
  // ============================================================
  // Level 1 - Tutorial: open terrain, few bricks
  // ============================================================
  {
    id: 1,
    name: 'Tutorial I',
    grid: [
      //0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,1,0,0,0,1,0,0,1,0,1,0,0,1,0,0,0,1,0,0],
      [0,0,0,0,0,0,1,0,0,1,0,1,0,0,1,0,0,0,0,0,0],
      [0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0],
      [0,0,0,0,0,0,1,0,1,1,0,1,1,0,1,0,0,0,0,0,0],
      [0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0],
      [0,0,0,1,0,0,1,0,0,1,0,1,0,0,1,0,0,1,0,0,0],
      [0,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0],
      [0,1,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,1,0],
      [0,0,0,1,0,0,1,0,0,1,0,1,0,0,1,0,0,1,0,0,0],
      [0,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,6,6,6,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,5,6,6,0,0,0,0,0,0,0,0],
    ],
    enemies: {
      total: 20,
      composition: { normal: 18, fast: 2, armor: 0, boss: 0 },
    },
    speedMultiplier: 0.6,
    spawnPoints: [
      { col: 0, row: 0 },
      { col: 10, row: 0 },
      { col: 20, row: 0 },
    ],
    playerSpawn: { col: 8, row: 10 },
  },

  // ============================================================
  // Level 2 - Tutorial II: more bricks, simple layout
  // ============================================================
  {
    id: 2,
    name: 'Tutorial II',
    grid: [
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,1,0,0,0,1,1,0,1,1,0,1,1,0,1,1,0,0,0,1,0],
      [0,0,0,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,1,0,0,1,0,0,1,0,1,0,1,0,1,0,0,1,0,0,1,0],
      [0,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0],
      [0,0,1,0,0,1,0,0,0,1,0,1,0,0,0,1,0,0,1,0,0],
      [0,0,1,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,1,0,0],
      [0,0,0,0,0,0,0,1,0,1,0,1,0,1,0,0,0,0,0,0,0],
      [0,1,0,1,0,0,0,1,0,1,0,1,0,1,0,0,0,1,0,1,0],
      [0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,6,6,6,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,5,6,6,0,0,0,0,0,0,0,0],
    ],
    enemies: {
      total: 20,
      composition: { normal: 16, fast: 4, armor: 0, boss: 0 },
    },
    spawnPoints: [
      { col: 0, row: 0 },
      { col: 10, row: 0 },
      { col: 20, row: 0 },
    ],
    playerSpawn: { col: 8, row: 10 },
  },

  // ============================================================
  // Level 3 - Tutorial III: denser bricks, introduce forest
  // ============================================================
  {
    id: 3,
    name: 'Tutorial III',
    grid: [
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,4,0,0,0,1,0,4,0,1,0,1,0,4,0,1,0,0,0,4,0],
      [0,4,0,1,0,1,0,4,0,1,0,1,0,4,0,1,0,1,0,4,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,1,0,0,1,1,0,1,0,4,0,1,0,1,1,0,0,1,0,0],
      [0,0,0,0,0,0,0,0,1,0,4,0,1,0,0,0,0,0,0,0,0],
      [0,1,0,1,1,0,1,0,0,0,0,0,0,0,1,0,1,1,0,1,0],
      [0,0,0,0,1,0,1,0,0,1,0,1,0,0,1,0,1,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0],
      [0,1,0,0,0,1,0,1,0,0,0,0,0,1,0,1,0,0,0,1,0],
      [0,0,0,1,0,1,0,1,0,0,0,0,0,1,0,1,0,1,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,6,6,6,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,5,6,6,0,0,0,0,0,0,0,0],
    ],
    enemies: {
      total: 20,
      composition: { normal: 14, fast: 6, armor: 0, boss: 0 },
    },
    spawnPoints: [
      { col: 0, row: 0 },
      { col: 10, row: 0 },
      { col: 20, row: 0 },
    ],
    playerSpawn: { col: 8, row: 10 },
  },

  // ============================================================
  // Level 4 - Steel Fortress: steel walls appear
  // ============================================================
  {
    id: 4,
    name: 'Steel Fortress',
    grid: [
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,2,0,0,1,2,0,1,1,0,1,1,0,2,1,0,0,2,0,0],
      [0,0,0,0,0,1,0,0,0,1,0,1,0,0,0,1,0,0,0,0,0],
      [0,1,0,1,0,0,0,1,0,0,0,0,0,1,0,0,0,1,0,1,0],
      [0,0,0,0,2,0,0,1,0,2,0,2,0,1,0,0,2,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,2,0,0,0,1,1,0,2,1,0,1,2,0,1,1,0,0,0,2,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,1,0,0,1,0,1,0,1,0,1,0,1,0,1,0,0,1,0,0],
      [0,0,0,0,0,1,0,1,0,0,0,0,0,1,0,1,0,0,0,0,0],
      [0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0],
      [0,0,0,0,0,0,0,0,6,6,6,6,6,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,5,6,6,0,0,0,0,0,0,0,0],
    ],
    enemies: {
      total: 20,
      composition: { normal: 12, fast: 5, armor: 3, boss: 0 },
    },
    spawnPoints: [
      { col: 0, row: 0 },
      { col: 10, row: 0 },
      { col: 20, row: 0 },
    ],
    playerSpawn: { col: 8, row: 10 },
  },

  // ============================================================
  // Level 5 - River Crossing: introduces water terrain
  // ============================================================
  {
    id: 5,
    name: 'River Crossing',
    grid: [
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,1,0,0,1,0,0,1,0,0,0,1,0,0,1,0,0,1,0,0],
      [0,0,0,0,0,1,0,0,1,0,0,0,1,0,0,1,0,0,0,0,0],
      [0,1,0,0,0,0,0,3,3,0,1,0,3,3,0,0,0,0,0,1,0],
      [0,0,0,1,0,1,0,3,3,0,0,0,3,3,0,1,0,1,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,1,0,0,1,0,1,0,3,1,0,1,3,0,1,0,1,0,0,1,0],
      [0,0,0,0,0,0,0,0,3,0,0,0,3,0,0,0,0,0,0,0,0],
      [0,0,1,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,1,0,0],
      [0,1,0,0,0,1,0,1,0,1,1,1,0,1,0,1,0,0,0,1,0],
      [0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,6,6,6,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,5,6,6,0,0,0,0,0,0,0,0],
    ],
    enemies: {
      total: 20,
      composition: { normal: 10, fast: 6, armor: 4, boss: 0 },
    },
    spawnPoints: [
      { col: 0, row: 0 },
      { col: 10, row: 0 },
      { col: 20, row: 0 },
    ],
    playerSpawn: { col: 8, row: 10 },
  },

  // ============================================================
  // Level 10 - Iron Wall: lots of armored enemies
  // ============================================================
  {
    id: 10,
    name: 'Iron Wall',
    grid: [
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,2,0,0,0,2,1,0,2,1,0,1,2,0,1,2,0,0,0,2,0],
      [0,0,0,1,0,0,1,0,0,1,0,1,0,0,1,0,0,1,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,1,0,0,1,2,0,1,3,3,0,3,3,1,0,2,1,0,0,1,0],
      [0,0,0,0,0,0,0,1,3,3,0,3,3,1,0,0,0,0,0,0,0],
      [0,0,2,0,0,1,0,0,0,2,0,2,0,0,0,1,0,0,2,0,0],
      [0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0],
      [0,1,0,1,0,0,0,2,0,1,4,1,0,2,0,0,0,1,0,1,0],
      [0,0,0,0,0,1,0,0,0,1,4,1,0,0,0,1,0,0,0,0,0],
      [0,0,1,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,1,0,0],
      [0,0,0,0,0,0,0,0,6,6,6,6,6,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,5,6,6,0,0,0,0,0,0,0,0],
    ],
    enemies: {
      total: 20,
      composition: { normal: 6, fast: 4, armor: 10, boss: 0 },
    },
    spawnPoints: [
      { col: 0, row: 0 },
      { col: 10, row: 0 },
      { col: 20, row: 0 },
    ],
    playerSpawn: { col: 8, row: 10 },
  },

  // ============================================================
  // Level 20 - Boss Battle: giant tank encounter
  // ============================================================
  {
    id: 20,
    name: 'Boss Battle',
    grid: [
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,1,0,0,1,2,0,1,2,0,2,1,0,2,1,0,0,1,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,2,0,0,2,0,0,2,3,0,0,0,3,2,0,0,2,0,0,2,0],
      [0,0,0,0,0,0,0,0,3,0,4,0,3,0,0,0,0,0,0,0,0],
      [0,0,1,0,0,1,2,0,0,0,4,0,0,0,2,1,0,0,1,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,1,0,0,0,2,0,1,0,2,0,2,0,1,0,2,0,0,0,1,0],
      [0,0,0,1,0,0,0,1,0,0,0,0,0,1,0,0,0,1,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,6,6,6,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,6,6,5,6,6,0,0,0,0,0,0,0,0],
    ],
    enemies: {
      total: 20,
      composition: { normal: 8, fast: 4, armor: 6, boss: 2 },
    },
    spawnPoints: [
      { col: 0, row: 0 },
      { col: 10, row: 0 },
      { col: 20, row: 0 },
    ],
    playerSpawn: { col: 8, row: 10 },
  },
];

/**
 * Get level data by level number.
 * If the level doesn't exist, generate one based on the closest template
 * with increased difficulty.
 * @param {number} levelNum
 * @returns {object} Level data
 */
function getLevelData(levelNum) {
  // Direct match
  const exact = LEVELS.find((l) => l.id === levelNum);
  if (exact) return JSON.parse(JSON.stringify(exact));

  // Find the closest template (highest id <= levelNum)
  let template = LEVELS[0];
  for (const l of LEVELS) {
    if (l.id <= levelNum && l.id > template.id) {
      template = l;
    }
  }

  // Clone and adjust difficulty
  const data = JSON.parse(JSON.stringify(template));
  data.id = levelNum;
  data.name = `Level ${levelNum}`;

  // Scale enemy composition based on level
  const cycle = Math.floor((levelNum - 1) / 20); // difficulty cycle
  const extra = cycle * 2;
  data.enemies.composition.armor = Math.min(
    data.enemies.total,
    data.enemies.composition.armor + extra
  );
  data.enemies.composition.fast = Math.min(
    data.enemies.total - data.enemies.composition.armor,
    data.enemies.composition.fast + cycle
  );
  data.enemies.composition.normal = Math.max(
    0,
    data.enemies.total -
      data.enemies.composition.armor -
      data.enemies.composition.fast -
      data.enemies.composition.boss
  );

  return data;
}

// ============================================================
// PVP Maps - Symmetric layouts with bases for 1v1 base-destruction mode
// Each player has a base (TERRAIN.BASE=5) surrounded by BASE_WALL (6)
// Player 1 base on left, Player 2 base on right
// ============================================================
const PVP_MAPS = [
  {
    id: 1,
    name: 'Arena I',
    grid: [
      //0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,0,1,0,0,0,1,0,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,0,1,0,0,0,1,0,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0],
      [0,0,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,0,0],
      [0,6,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6,6,0],
      [0,6,5,6,1,0,1,0,2,0,0,0,2,0,1,0,1,6,5,6,0],
      [0,6,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6,6,0],
      [0,0,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,0,1,0,0,0,1,0,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,0,1,0,0,0,1,0,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
    ],
    teamABase: [{ col: 2, row: 6 }],
    teamBBase: [{ col: 18, row: 6 }],
    teamASpawns: [{ col: 1, row: 5 }],
    teamBSpawns: [{ col: 19, row: 7 }],
  },
  {
    id: 2,
    name: 'Arena II',
    grid: [
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,1,0,0,0,1,0,1,0,0,0,1,0,0,0,0,0],
      [0,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,2,1,0,0,0,1,2,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,1,0,0,4,0,0,1,0,0,0,0,0,0,0],
      [0,6,6,0,0,1,0,0,0,1,4,1,0,0,0,1,0,0,6,6,0],
      [0,6,5,6,0,0,0,0,4,4,0,4,4,0,0,0,0,6,5,6,0],
      [0,6,6,0,0,1,0,0,0,1,4,1,0,0,0,1,0,0,6,6,0],
      [0,0,0,0,0,0,0,1,0,0,4,0,0,1,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,2,1,0,0,0,1,2,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0],
      [0,0,0,0,0,1,0,0,0,1,0,1,0,0,0,1,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
    ],
    teamABase: [{ col: 2, row: 6 }],
    teamBBase: [{ col: 18, row: 6 }],
    teamASpawns: [{ col: 0, row: 6 }],
    teamBSpawns: [{ col: 20, row: 6 }],
  },
  {
    id: 3,
    name: 'Arena III',
    grid: [
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,1,0,0,2,0,0,0,0,0,2,0,0,1,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,0,3,0,0,0,3,0,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,3,0,2,0,3,0,0,0,0,0,0,0,0],
      [0,6,6,1,0,2,0,0,0,0,0,0,0,0,0,2,0,1,6,6,0],
      [0,6,5,6,0,0,0,1,0,4,4,4,0,1,0,0,0,6,5,6,0],
      [0,6,6,1,0,2,0,0,0,0,0,0,0,0,0,2,0,1,6,6,0],
      [0,0,0,0,0,0,0,0,3,0,2,0,3,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,0,3,0,0,0,3,0,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,1,0,0,2,0,0,0,0,0,2,0,0,1,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
    ],
    teamABase: [{ col: 2, row: 6 }],
    teamBBase: [{ col: 18, row: 6 }],
    teamASpawns: [{ col: 1, row: 5 }],
    teamBSpawns: [{ col: 19, row: 7 }],
  },
];

/**
 * Get a PVP map by id, or deterministically by roomId seed.
 * When no mapId is given, uses roomId to pick the same map on both clients.
 * Falls back to random only when neither mapId nor roomId is provided.
 * @param {number} [mapId] - Explicit map id
 * @param {string} [roomId] - Room id used as seed for deterministic selection
 * @returns {object} PVP map data (deep clone).
 */
function getPvpMap(mapId, roomId) {
  let map;
  if (mapId) {
    map = PVP_MAPS.find((m) => m.id === mapId);
  }
  if (!map && roomId) {
    // Deterministic selection based on roomId so both clients pick the same map
    let hash = 0;
    for (let i = 0; i < roomId.length; i++) {
      hash = ((hash << 5) - hash + roomId.charCodeAt(i)) | 0;
    }
    const index = Math.abs(hash) % PVP_MAPS.length;
    map = PVP_MAPS[index];
  }
  if (!map) {
    map = PVP_MAPS[Math.floor(Math.random() * PVP_MAPS.length)];
  }
  return JSON.parse(JSON.stringify(map));
}

// ============================================================
// 3v3 Team Maps - Symmetric layouts with bases on both ends
// Each team has a base (TERRAIN.BASE=5) surrounded by BASE_WALL (6)
// Left team base at left end, right team base at right end
// Center area is the contested zone
// ============================================================
const TEAM_MAPS = [
  {
    id: 1,
    name: 'Battlefield I',
    grid: [
      //0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,1,0,0,1,0,0,0,1,0,0,1,0,0,0,0,0],
      [0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0],
      [0,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0],
      [0,0,0,0,1,0,0,1,0,2,0,2,0,1,0,0,1,0,0,0,0],
      [0,6,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6,6,0],
      [0,6,5,6,0,2,0,0,3,3,0,3,3,0,0,2,0,6,5,6,0],
      [0,6,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6,6,0],
      [0,0,0,0,1,0,0,1,0,2,0,2,0,1,0,0,1,0,0,0,0],
      [0,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0],
      [0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0],
      [0,0,0,0,0,1,0,0,1,0,0,0,1,0,0,1,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
    ],
    // Each team has exactly 1 base, centered vertically on their side
    teamABase: [{ col: 2, row: 6 }],
    teamBBase: [{ col: 18, row: 6 }],
    // Spawn points for Team A (left side, near base)
    teamASpawns: [
      { col: 1, row: 5 },
      { col: 0, row: 6 },
      { col: 1, row: 7 },
    ],
    // Spawn points for Team B (right side, near base)
    teamBSpawns: [
      { col: 19, row: 5 },
      { col: 20, row: 6 },
      { col: 19, row: 7 },
    ],
  },
  {
    id: 2,
    name: 'Battlefield II',
    grid: [
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,0,0,4,0,4,0,0,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,1,4,0,4,1,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0],
      [0,0,0,0,0,0,0,2,0,1,0,1,0,2,0,0,0,0,0,0,0],
      [0,6,6,0,0,0,0,0,0,0,3,0,0,0,0,0,0,0,6,6,0],
      [0,6,5,6,1,0,2,0,0,0,3,0,0,0,2,0,1,6,5,6,0],
      [0,6,6,0,0,0,0,0,0,0,3,0,0,0,0,0,0,0,6,6,0],
      [0,0,0,0,0,0,0,2,0,1,0,1,0,2,0,0,0,0,0,0,0],
      [0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,1,4,0,4,1,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,0,0,4,0,4,0,0,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
    ],
    teamABase: [{ col: 2, row: 6 }],
    teamBBase: [{ col: 18, row: 6 }],
    teamASpawns: [
      { col: 1, row: 5 },
      { col: 0, row: 6 },
      { col: 1, row: 7 },
    ],
    teamBSpawns: [
      { col: 19, row: 5 },
      { col: 20, row: 6 },
      { col: 19, row: 7 },
    ],
  },
  {
    id: 3,
    name: 'Battlefield III',
    grid: [
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,1,0,0,2,0,0,0,0,0,2,0,0,1,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,0,3,0,0,0,3,0,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,3,0,2,0,3,0,0,0,0,0,0,0,0],
      [0,6,6,1,0,2,0,0,0,0,0,0,0,0,0,2,0,1,6,6,0],
      [0,6,5,6,0,0,0,1,0,4,4,4,0,1,0,0,0,6,5,6,0],
      [0,6,6,1,0,2,0,0,0,0,0,0,0,0,0,2,0,1,6,6,0],
      [0,0,0,0,0,0,0,0,3,0,2,0,3,0,0,0,0,0,0,0,0],
      [0,0,0,0,0,0,1,0,3,0,0,0,3,0,1,0,0,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0],
      [0,0,0,0,1,0,0,2,0,0,0,0,0,2,0,0,1,0,0,0,0],
      [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
    ],
    teamABase: [{ col: 2, row: 6 }],
    teamBBase: [{ col: 18, row: 6 }],
    teamASpawns: [
      { col: 1, row: 5 },
      { col: 0, row: 6 },
      { col: 1, row: 7 },
    ],
    teamBSpawns: [
      { col: 19, row: 5 },
      { col: 20, row: 6 },
      { col: 19, row: 7 },
    ],
  },
];

/**
 * Get a 3v3 team map by id or random.
 * @param {number} [mapId] - Optional map id
 * @returns {object} Team map data (deep clone).
 */
function getTeamMap(mapId) {
  let map;
  if (mapId) {
    map = TEAM_MAPS.find((m) => m.id === mapId);
  }
  if (!map) {
    map = TEAM_MAPS[Math.floor(Math.random() * TEAM_MAPS.length)];
  }
  return JSON.parse(JSON.stringify(map));
}

module.exports = { LEVELS, getLevelData, PVP_MAPS, getPvpMap, TEAM_MAPS, getTeamMap };