bingoLogic.js

$(function() { bingo.bingo(goals); });



goals = [];
bingoBoard = [];
bingo.bingo = function (goals) {
  var difficultyCheckbox = document.getElementById('showDifficulty');
  difficultyCheckbox.onchange = function() {
    if(this.checked) {
      bingo.addAllDifficultyClasses();
    } else {
      bingo.removeAllDifficultyClasses();
    }
  }

  var seed = gup('seed');
  var newSeed = gup('newseed');

  var allowSimilar = gup('allowSimilar');
  var useDifficultyPattern = gup('randomDifficultyPattern');
  var showDifficulty = gup('showDifficulty');

  var shouldAllowSimilar = allowSimilar.toLowerCase() == "true";
  var shouldRandomDifficultyPattern = useDifficultyPattern.toLowerCase() == "true";
  var shouldShowDifficulty = showDifficulty.toLowerCase() == "true";

  var generateLink = document.getElementById("generateLink");
  var similarityCheckbox = document.getElementById('allowSimilar');
  var difficultyPatternCheckbox = document.getElementById('randomDifficultyPattern');
  var tipText = document.getElementById("tipText");

  if (seed == "" ) {
    var symbol;
    if(window.location.href.indexOf('?') == -1) {
      symbol = '?';
    } else {
      symbol = '&';
    }

    window.location += symbol + 'seed=' + Math.ceil(1000*1000*1000 * Math.random()).toString(36);
    return;
  }

  $('#generateLink').click(function(){
    var link = "?";
    if (similarityCheckbox.checked == true)
      link += '&allowSimilar=true';
    if (difficultyPatternCheckbox.checked == true)
      link += '&randomDifficultyPattern=true';
    if(difficultyCheckbox.checked == true)
      link += '&showDifficulty=true';
    generateLink.href = link;
  });


  seed = seed.toLowerCase();
  Math.seedrandom(seed); //sets up the RNG
  var results = $("#results");
  results.append ("<p></p>");

  this.hardPositions = [2,9,11,18,20];
  this.mediumPositions = [0,3,5,7,12,14,16,19,21,23];
  this.easyPositions = [1,4,6,8,10,13,15,17,22,24];

  readGoals("hard", hardGoals);
  readGoals("medium", mediumGoals);
  readGoals("easy", easyGoals);

  if(!shouldAllowSimilar) {
    //compute the exclusions of the goals
    makeExclusions(goals["hard"]);
    makeExclusions(goals["medium"]);
    makeExclusions(goals["easy"]);
  }

  bingoBoard = [];
  var invalidNames = [];

  if(shouldRandomDifficultyPattern) {
    allGoals = goals["hard"].concat(goals["medium"], goals["easy"]);
    allPositions = this.hardPositions.concat(this.mediumPositions, this.easyPositions);
    addGoals(bingoBoard, allGoals, allPositions, invalidNames);
  } else {
    addGoals(bingoBoard, goals["hard"], this.hardPositions, invalidNames);
    addGoals(bingoBoard, goals["medium"], this.mediumPositions, invalidNames);
    addGoals(bingoBoard, goals["easy"], this.easyPositions, invalidNames);
  }

  //populate the actual table on the page
  for (var i=0; i<25; i++) {
    $('#slot'+i).append(bingoBoard[i].label);
	$('#slot'+i)[0].setAttribute("title", bingoBoard[i].tip);
	$('#slot'+i).mouseover(function() {
	  tipText.innerHTML=this.title;
	});
  }
  
  //check the boxes based on url params
  if (shouldAllowSimilar) {
    similarityCheckbox.checked = true;
  }

  if(shouldRandomDifficultyPattern) {
    difficultyPatternCheckbox.checked = true;
  }
  
  if(shouldShowDifficulty) {
    difficultyCheckbox.checked = true;
    this.addAllDifficultyClasses();
  }



  function addGoals(board, goals, positions, invalidNames) {

    for(var i = 0; i < positions.length; ++i) {
      position = positions[i];

      var candidates = buildCandidates(goals, invalidNames);
      var newGoalIdx = Math.floor((Math.random() * candidates.length));
      var newGoal = candidates[newGoalIdx];
      board[position] = {label: newGoal.label, difficulty: newGoal.difficulty, tip: newGoal.tip};
      invalidNames.push(newGoal.name);
      if(typeof newGoal.exclusions != 'undefined') {
        var excl = newGoal.exclusions;
        for(var j = 0; j < excl.length; ++j) {
          invalidNames.push(excl[j]);
        }
      }
    }

  }

  function buildCandidates(goals, usedNames) {
    var candidates = [];
    for(var i = 0; i <goals.length; ++i) {
      var candidate = goals[i];
      if($.inArray(candidate.name, usedNames) != -1) {
          continue;
      }
      candidates.push(candidate);
    }
    return candidates;
  }

  function makeExclusions(goals) {
    for(var i = 0; i < exclusions.length; ++i) {
      excl = exclusions[i];
      for(var j = 0; j < goals.length; ++j) {
        goal = goals[j];
        //if the goal is mentioned by the exclusion list
        if($.inArray(goal.name, excl) != -1) {
          if(typeof goal.exclusions === 'undefined') {
            goal.exclusions = [];
          }
          //then add all the other things in the list into this goal's exclusion
          for(var k = 0; k < excl.length; ++k) {
            var otherGoalName = excl[k];
            if(otherGoalName != goal.name) {
              goal.exclusions.push(otherGoalName);
            }
          }
        }
      }
    }
  }

  function readGoals(difficulty, someGoals) {
    goals[difficulty] = [];
    for(var i = 0; i < someGoals.length; ++i) {
      var goalStr = someGoals[i];
      var parts = goalStr.split('|');
      var goal = {};
      goal.label = parts[0];
      goal.name = parts[1];
	  goal.tip = parts[2];
	  if(goal.tip == null) {
	    goal.tip = "";
      }
      goal.difficulty = difficulty;
      goals[difficulty].push(goal);
    }
  }



  //gets url parameter
  function gup( name ) {
    name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
    var regexS = "[\\?&]"+name+"=([^&#]*)";
    var regex = new RegExp( regexS );
    var results = regex.exec( window.location.href );
    if( results == null )
      return "";
    else
      return results[1];
  }

   $("#bingo tr td:not(.no), #selected td").toggle(
    function () {
      $(this).addClass("greensquare");
    },
    function () {
      $(this).addClass("redsquare").removeClass("greensquare");
    },
    function () {
      $(this).removeClass("redsquare");
    }

  );



} // bingo.bingo

bingo.addAllDifficultyClasses = function () {
    for (var i=0; i<25; i++) {
      $('#slot'+i).addClass(bingoBoard[i].difficulty);
    }
    //this.addDifficultyClasses("hard",this.hardPositions);
    //this.addDifficultyClasses("medium",this.mediumPositions);
    //this.addDifficultyClasses("easy",this.easyPositions);
  }
  
bingo.removeAllDifficultyClasses = function () {
  for(var i = 0; i < 25; ++i) {
    $('#slot'+i).removeClass("hard medium easy");
  }
}

bingo.addDifficultyClasses = function (className, positions) {
  for(var i =0; i < positions.length; ++i) {
    var pos = positions[i];
    $('#slot'+pos).addClass(className);
  }
}