var Drone = require('../drone').Drone;

//
// constructs a medieval fort
// 
Drone.extend('fort', function( side, height ) {
  if ( typeof side == 'undefined' ) {
    side = 18;
  }
  if ( typeof height == 'undefined' ) { 
    height = 6;
  }
  // make sure side is even
  if ( side % 2 ) {
    side++;
  }
  if ( height < 4 || side < 10 ) {
    throw new java.lang.RuntimeException('Forts must be at least 10 wide X 4 tall');
  }
  var brick = 98;
  //
  // build walls.
  //
  this.chkpt('fort').box0(brick,side,height-1,side);
  //
  // build battlements
  //
  this.up(height-1);
  for ( i = 0; i <= 3; i++ ) {
    var turret = [];
    this.box(brick) // solid brick corners
      .up().box('50:5').down() // light a torch on each corner
      .fwd(); 
    turret.push('109:'+ Drone.PLAYER_STAIRS_FACING[this.dir]);
    turret.push('109:'+ Drone.PLAYER_STAIRS_FACING[(this.dir+2)%4]);
    try {
      this.boxa(turret,1,1,side-2).fwd(side-2).turn();
    } catch( e ) {
      console.log('ERROR: ' + e.toString());
    }
  }
  //
  // build battlement's floor
  //
  this.move('fort');
  this.up(height-2).fwd().right().box('126:0',side-2,1,side-2);
  var battlementWidth = 3;
  if ( side <= 12 ) {
    battlementWidth = 2;
  }
  this.fwd(battlementWidth).right(battlementWidth)
    .box(0,side-((1+battlementWidth)*2),1,side-((1+battlementWidth)*2));
  //
  // add door
  //
  var torch = '50:' + Drone.PLAYER_TORCH_FACING[this.dir];
  this.move('fort').right((side/2)-1).door2() // double doors
    .back().left().up()
    .box(torch) // left torch
    .right(3)
    .box(torch); // right torch
  //
  // add ladder up to battlements
  //
  var ladder = '65:' + Drone.PLAYER_SIGN_FACING[(this.dir+2)%4];
  this.move('fort').right((side/2)-3).fwd(1) // move inside fort
    .box(ladder, 1,height-1,1);
  return this.move('fort');
  
});