MTG bears vs doomblade

var starting_life = 20;
var bear_bears = 37;
var bear_lands = 23;
var doomblade_doomblades = 37;
var doomblade_lands = 23;

//funcions
function shuffle(array) {
  let currentIndex = array.length,  randomIndex;

  // While there remain elements to shuffle.
  while (currentIndex > 0) {

    // Pick a remaining element.
    randomIndex = Math.floor(Math.random() * currentIndex);
    currentIndex--;

    // And swap it with the current element.
    [array[currentIndex], array[randomIndex]] = [
      array[randomIndex], array[currentIndex]];
  }
  return array;
}

var game_state = {};

function initialize_game_state(){
	//initialize decks
	var bear_deck = [];
	for(var i = 0; i < bear_bears; i++){
		bear_deck.push(1);
	}
	for(var i = 0; i < bear_lands; i++){
		bear_deck.push(0);
	}
	bear_deck = shuffle(bear_deck);

	var doomblade_deck = [];
	for(var i = 0; i < doomblade_doomblades; i++){
		doomblade_deck.push(2);
	}
	for(var i = 0; i < doomblade_lands; i++){
		doomblade_deck.push(0);
	}
	doomblade_deck = shuffle(doomblade_deck);

	game_state = {
		doomblade_life:starting_life,
		bear_deck:bear_deck,
		doomblade_deck:doomblade_deck,
		bear_hand:[],
		doomblade_hand:[],
		bear_lands:0,
		doomblade_lands:0,
		bears_on_board:0,
		bears_killed:0,
		turn_count:1
	};
	//starting hand
	for(var i = 0; i < 7; i++){
		game_state.bear_hand.push(game_state.bear_deck.pop());
	}
	for(var i = 0; i < 7; i++){
		game_state.doomblade_hand.push(game_state.doomblade_deck.pop());
	}
}

//bear turn
function bear_turn(){
	//draw
	game_state.bear_hand.push(game_state.bear_deck.pop());
	//play land
	if( game_state.bear_hand.includes(0) ){
		game_state.bear_hand.splice( game_state.bear_hand.indexOf(0) ,1 );
		game_state.bear_lands++;
	}
	//play bears
	var available_mana = game_state.bear_lands;
	while( game_state.bear_hand.includes(1) && available_mana > 1 ){
		game_state.bear_hand.splice( game_state.bear_hand.indexOf(1) ,1 );
		game_state.bears_on_board++;
		available_mana -= 2;
	}
}

//doomblade turn
function doomblade_turn(){
	//draw unless first turn
	if(game_state.turn_count != 1){
		game_state.doomblade_hand.push(game_state.doomblade_deck.pop());
	}
	//play land
	if( game_state.doomblade_hand.includes(0) ){
		game_state.doomblade_hand.splice( game_state.doomblade_hand.indexOf(0) ,1 );
		game_state.doomblade_lands++;
	}
	//kill bears
	var available_mana = game_state.doomblade_lands;
	while( game_state.doomblade_hand.includes(2) && game_state.bears_on_board > 0 && available_mana > 1 ){
		game_state.doomblade_hand.splice( game_state.doomblade_hand.indexOf(2) ,1 );
		game_state.bears_on_board--;
		game_state.bears_killed++;
		available_mana -= 2;
	}
	//discard cards
	while( game_state.doomblade_hand.length > 7 ){
		if( game_state.doomblade_hand.includes(0) ){
			game_state.doomblade_hand.splice( game_state.doomblade_hand.indexOf(0) ,1 );
		}else{
			game_state.doomblade_hand.splice( game_state.doomblade_hand.indexOf(2) ,1 );
		}
	}
}

var game_over = 0;

//show game_state
function show_game_state(){
	console.log("TURN #:" + game_state.turn_count);
	console.log("---BEAR HAND:" + game_state.bear_hand.toString());
	console.log("---BEAR LANDS:" + game_state.bear_lands);
	console.log("---BOARD STATE:" + game_state.bears_on_board + " BEARS");
	console.log("-----BEARS KILLED:" + game_state.bears_killed + " BEARS");
	console.log("---DOOMBLADE HAND:" + game_state.doomblade_hand.toString());
	console.log("---DOOMBLADE LANDS:" + game_state.doomblade_lands);
	console.log("---DOOMBLADE LIFE:" + game_state.doomblade_life);
}


//turn cycle
function turn_cycle(){
	doomblade_turn();
	//console.log("DB TURN: " + game_state.turn_count);
	//show_game_state();
	//gg if bear deck has no cards
	if(game_state.bear_deck.length == 0){
		game_over = 1;
		console.log("BEAR LOSS");
		bear_loss++;
		show_game_state();
		return;
	}
	//gg if bear deck has lethal
	if(game_state.bears_on_board > 0){
		game_state.doomblade_life -= game_state.bears_on_board * 2;
		if( game_state.doomblade_life <= 0 ){
			game_over = 1;
			console.log("BEAR WIN");
			bear_wins++;
			show_game_state();
			return;
		}
	}
	bear_turn();
	//console.log("BEAR TURN: " + game_state.turn_count);
	//show_game_state();
	game_state.turn_count++;
}

var bear_wins = 0;
var bear_loss = 0;

for(var j = 0; j < 100; j++){
	initialize_game_state();
	game_over = 0;
	while( game_state.turn_count < 60 && game_over == 0){
		turn_cycle();
	}
}

console.log(bear_wins);
console.log(bear_loss);