BrumJS Rock Paper Scissors Bot

bot.js

var hands = [
	'rock',
	'paper',
	'scissors',
	'water',
	'dynamite'
];

var opponents = []

var Opponent = function(name) {	
	this.name = name;
	this.theirPlays = {
		rock: 0,
		paper: 0,
		scissors: 0,
		water: 0,
		dynamite: 0
	};
	this.ourPlays = {
		rock: 0,
		paper: 0,
		scissors: 0,
		water: 0,
		dynamite: 0
	}
	this.totalPlays = 0;
};

Opponent.prototype.rememberTheirPlay = function(result) {
	var theirPlay = result[this.name];
	this.theirPlays[theirPlay] += 1;
};

Opponent.prototype.rememberOurPlay = function(play) {	
	this.ourPlays[play] += 1;
	this.totalPlays++;
};

var currentOpponent;

var init = function(opponentName) {
	currentOpponent = new Opponent(opponentName);
};

var play = function() {	

	if((50 - currentOpponent.totalPlays) <= (5 - currentOpponent.ourPlays.dynamite) ) {
		currentOpponent.rememberOurPlay('dynamite');
		return "dynamite";
	}
	if((50 - currentOpponent.totalPlays) <= (2 - currentOpponent.theirPlays.dynamite) ) {
		currentOpponent.rememberOurPlay('water');
		return "water";
	}		
	var ourHand = selectHand();

	
	if(currentOpponent.ourPlays.dynamite === 5) {
		while(ourHand === 'dynamite') {
			ourHand = selectHand();
		}		
	};

	currentOpponent.rememberOurPlay(ourHand);
	if(currentOpponent.name === 'test') {
		console.log("'" + ourHand + "'");
		if(ourHand == '') { alert('BLANK'); }
	}	
	return ourHand;
};

var result = function(result) {
	currentOpponent.rememberTheirPlay(result);
};

function selectHand() {
	var ourHand = '';
	var randomNumber = getRandomNumber();
	
	if (randomNumber < 10) {
		ourHand = 'dynamite';		
	} else if(randomNumber < 23) {
		ourHand = 'rock';
	} else if (randomNumber < 36) {
		ourHand = 'paper';
	} else if (randomNumber < 50) {
		ourHand = 'scissors';
	} else {
		ourHand = 'water';
	}
	return ourHand;
}

function getRandomNumber() {
  var min = 0;
  var max = 50;
  return Math.floor(Math.random() * (max - min)) + min;
}