deathGame.js

/*
-----------------------
Example:
-----------------------
Round 1
Player1 hits Player2 with 5 dmg
Player2 hits Player3 with 10 dmg
Player3 has died
Player4 hits Player1 with 4 dmg

Round 2
Player1 hits Player2 with 7 dmg
Player2 has died
Player4 hits Player1 with 7 dmg
Player1 has died

Player4 is a winner

-----------------------

console.log(`Round ${round}`);
console.log(`${player1} hits ${player2} with ${dmg} dmg`);
console.log(`${player} has died`);
console.log(`${player} is a winner`);

*/

const PLAYERS_NUM = 4;
const PLAYER_LIVES = 10;
const MIN_DMG = 1;
const MAX_DMG = 10;

function getDamage() {
  return Math.floor(Math.random() * (MAX_DMG - MIN_DMG + 1)) + MIN_DMG;
}

function play() {
  const players = Array(PLAYERS_NUM).fill(true).map((player, i) => {
    return {
      index: i + 1,
      lives: PLAYER_LIVES,
    }
  });

  let round = 1;
  let currentPlayerIndex = 0;
  let nextPlayerIndex = 1;
  while (players.length > 1) {
    if (currentPlayerIndex === 0) {
      console.log(`\nRound ${round}`);
      round++;
    }

    const player = players[currentPlayerIndex];
    const nextPlayer = players[nextPlayerIndex];

    const dmg = getDamage();
    console.log(`${player.index} hits ${nextPlayer.index} with ${dmg} dmg`);
    nextPlayer.lives -= dmg;

    if (nextPlayer.lives <= 0) {
      console.log(`${nextPlayer.index} has died`);
      players.splice(nextPlayerIndex, 1);
    }

    currentPlayerIndex = nextPlayerIndex;
    // If nextPlayer was the last player and he died.
    if (currentPlayerIndex > players.length - 1) {
      currentPlayerIndex = 0;
    }

    nextPlayerIndex = (currentPlayerIndex + 1) % players.length;
  }

  console.log(`\n${players[0].index} is a winner`);
}

play();