/* getRandomColor()
Helper function, returns hex color value
*/
function getRandomColor() {
    var letters = '0123456789ABCDEF';
    var color = '#';
    for (var i = 0; i < 6; i++ ) {
        color += letters[Math.floor(Math.random() * 16)];
    }
    return color;
}

/* key class */
function Key () {
  this.location; //where the key is placed
  this.crafty; //CraftyJS specific rendering data
  
  //sets up CraftyJS handling info
  this.draw = function (assocRoom) {
    this.crafty = Crafty.e('2D, DOM, Color, key, Collision')
    .attr({x: this.location.x + 10, y: (50 + (assocRoom.depth * 15)), w: 10, h: 10, z:assocRoom.depth})
    .color(assocRoom.color)
    .onHit("player", function(from) { //when the player touches the key
        assocRoom.unlock(); //unlock the associated room
        this.destroy(); //delete the key
     });
  }
}

/* room class */
function Room () {
  this.parentRoom;
  this.depth;
  this.key;
  this.x;
  this.y;
  this.z;
  this.width;
  this.height;
  this.color;
  this.crafty;
  
  this.init = function (setParentRoom,setDepth) {
    this.parentRoom = setParentRoom;
    this.depth = setDepth;
  };
  
  this.createDraw = function (x,y,width,height,color,solid) {
    this.x = x;
    this.y = y;
    this.width = width;
    this.height = height;
    this.color = color;
    
    this.crafty = Crafty.e('2D, DOM, Color')
    .attr({x: this.x, y: this.y, w: this.width, h: this.height, z:this.depth})
    .color(this.color);
    
    if (solid){
      this.crafty.addComponent('solid');
    }
  };
  
  this.unlock = function() {
    this.crafty.removeComponent('solid',false);
  };
}

function roomGenerator (depthMax) {
  var roomsToCheck = [];
  var finishedRooms = [];
  
  //create the very first container room
  var initialRoom = new Room;
  initialRoom.init("none",0);
  initialRoom.createDraw (10,10,780,230,'#0000ff',false);
  roomsToCheck[roomsToCheck.length] = initialRoom;
  
  //loop thru all rooms
  while (roomsToCheck.length > 0){
    var currentRoom = roomsToCheck[0];
    
    //if you haven't reached max depth
    if(currentRoom.depth < depthMax){
      //setup a new room
      var newRoom = new Room;
      newRoom.init(currentRoom,currentRoom.depth+1);
      
      //prepare to create a list of parent rooms
      var allParentRooms = [];
      var roomCheck = newRoom;
      //compile room list
      while (roomCheck.parentRoom != "none") {
        allParentRooms[allParentRooms.length] = roomCheck.parentRoom;
        roomCheck = roomCheck.parentRoom;
      }
      
      //create key
      var curKey = new Key;
      //set key location randomly
      curKey.location = allParentRooms[Math.floor(Math.random() * allParentRooms.length)];
      //draw the new room and its key
      newRoom.createDraw(currentRoom.x + 50,10,780,230,getRandomColor(),true);
      curKey.draw(newRoom);
      //associate the room with its key
      newRoom.key = curKey;
      
      //add the new room to be checked, move the old one to finished
      roomsToCheck[roomsToCheck.length] = newRoom;
      finishedRooms[finishedRooms.length] = currentRoom;
      roomsToCheck.splice(0,1);
      
    }
    else {
      //at max depth, finished making rooms
      finishedRooms.push(currentRoom);
      roomsToCheck.splice(0,1);
    }
  }
}

//create CraftyJS window
Crafty.init(800,250, document.getElementById('game'));

//call room generator
roomGenerator(10);

//create basic player instance
Crafty.e('2D, DOM, Color, Fourway,Collision,player')
.attr({x: 20, y: 20, w: 20, h: 20, z: 100})
.color('#ffffff')
.fourway(200)
.bind('Moved', function(from) {
        if (this.hit('solid')) {
            this.attr({x: this.x - 10, y:this.y});
        };
});