Fancy movement logics.

gistfile1.js

function checkMovementOrSomething(){
  var $element = $("thingy");
  var movementActions = [
      {target: 'wall', callback: function(game){ return false; }}
      {target: 'ghost', callback: function(game){if(!game.hasPowerUp()){game.gameOver(); return false;}}},
      {target: 'bubble', callback: function(game){game.points++;game.removeBubble(x, y)}}
      {target: 'power-up', callback: function(game){game.setPowerUp(true);}}
  ];
  for(var i=0; i< movementActions.length;i++){
    var action = movementActions[i];
    if($element.hasClass(action.target)){
      if(!action.callback()) return false;
    }
  }

  return true;
}