entropy.js

var api = {
  move: Move,
  reset: Reset,
  read: function(selector) { return parseInt($(selector).innerHTML); }
};

var scores = {
  man: function() { return api.read('#manscore'); },
  machine: function() { return api.read('#machscore'); }
};

var percentages = {
  man: function() { return api.read('#manper'); },
  machine: function() { return api.read('#machper'); }
};

var tactic = {
  makeMove: function() {
    var moveValue = Math.round(Math.random());
    api.move(moveValue);
  }
};


var round = {

  playPerfectly: function() {
    api.reset();
    while(scores.machine() == 0) { tactic.makeMove(); };
    return { playsCount: scores.man() };
  },

  playReasonably: function(percentageThreshold) {
    api.reset();
    while(percentages.machine() <= percentageThreshold) { tactic.makeMove(); }
    return { playsCount: scores.man() }
  }
};

var player = {

  playUntilStreak: function(streakGoal) {
    var lastStreakCount = 0;
    var attemptCount = 0;
    while(lastStreakCount < streakGoal) {
      attemptCount += 1;
      lastStreakCount = round.playPerfectly().playsCount;
    };
    return {
      attempts: attemptCount,
      winningPlaysCount: lastStreakCount,
    };
  },

  playForThreshold: function(percentageThreshold, maxAttemptsCount) {
    var plays = []
    for(var i = 0; i < maxAttemptsCount; i++) {
      plays.push(round.playReasonably().playsCount);
    }
    return {
      winningPlaysAttemptsCount: plays
    }
  }
};


var api = {
  move: Move,
  reset: Reset,
  read: function(selector) { return parseInt($(selector).innerHTML); }
};

var scores = {
  man: function() { return api.read('#manscore'); },
  machine: function() { return api.read('#machscore'); }
};

var percentages = {
  man: function() { return api.read('#manper'); },
  machine: function() { return api.read('#machper'); }
};

var tactic = {
  makeMove: function() {
    var moveValue = Math.round(Math.random());
    api.move(moveValue);
  }
};


var round = {

  playPerfectly: function() {
    api.reset();
    while(scores.machine() == 0) { tactic.makeMove(); };
    return { playsCount: scores.man() };
  },

  playReasonably: function(percentageThreshold) {
    api.reset();
    while(percentages.machine() <= percentageThreshold) { tactic.makeMove(); }
    return { playsCount: scores.man() }
  }
};

var player = {

  playUntilStreak: function(streakGoal) {
    var lastStreakCount = 0;
    var attemptCount = 0;
    while(lastStreakCount < streakGoal) {
      attemptCount += 1;
      lastStreakCount = round.playUntilStreak().playsCount;
    };
    return {
      attempts: attemptCount,
      winningPlaysCount: lastStreakCount,
    };
  },

  playForThreshold: function(percentageThreshold, iterations) {
    var plays = []
    for(var i = 0; i < iterations; i++) {
      var play = round.playReasonably(percentageThreshold).playsCount;
      plays.push(play);
    }
    return {
      winningPlaysAttemptsCount: plays
    }
  }
};


var percentageThreshold = 50;
var iterations = 100;

var playAttempts = player.playForThreshold(percentageThreshold, iterations).winningPlaysAttemptsCount;
var playsTotal = 0;
for(var i = 0; i < playAttempts.length; i++) {
  playsTotal += playAttempts[i];
}
var playsAverage = playsTotal / playAttempts.length;

console.log("Played " + iterations + " games until machine was at " + percentageThreshold + "%");
console.log("Average number of wins: " + playsAverage);