window.attack = {};
attack.pattern = {};
attack.rotations = [ 0 ];
attack.rotation = 0;
attack.src = {};

attack.gfx = {};
attack.gfx.overlay = new Image()
attack.gfx.overlay.src = "assets/ui/attackOverlay.png";
attack.gfx.explosion = new Image()
attack.gfx.explosion.src = "assets/fx/explosion.png";

attack.animCounter = 0;
attack.frame = 0;

attack.init = function()
{
  gameState.flow = "attackSelect";
  attack.src = map.data[mapCursor.x][mapCursor.y].unit;
  attack.pattern = attack.src.equipment.pattern;
}

attack.cancel = function()
{
  gameState.flow = "freeLook";
}

attack.confirm = function()
{
  gameState.flow = "attackAnim";
}

attack.go = function()
{
  var pattern = rotatePattern(this.pattern, this.rotations[this.rotation]);
  var origin = {};
  var i, j;
  origin.x = mapCursor.x - 2;
  origin.y = mapCursor.y - 2;
  this.animCounter++;
  for (i = 0; i < 5; i++)
  {
    for (j = 0; j < 5; j++)
    {
      if (pattern[i][j] != 0)
      {
        screen.drawImage(this.gfx.explosion, this.frame*16, 0, 16, 16, 16*(origin.x + i - camera.x), 16*(origin.y + j - camera.y), 16, 16);
        if (this.animCounter == 3 && this.frame == 2)
        {
    damageStruct(origin.x + i, origin.y + j);
    damageUnit(origin.x + i, origin.y + j);
    map.degradeCell(map.data[origin.x + i][origin.y + j]);
        }
      }
    }
  }
  if (this.animCounter == 3)
  {
    this.frame++;
    this.animCounter = 0;
  }
  if (this.frame == 3)
  {
    this.frame = 0;
    this.animCounter = 0;
    this.src.hasAttacked = true;
    if (gameState.flow != "youLose" && gameState.flow != "youWin")
    {
      gameState.flow = "attackEnd";
    }
  }
}

attack.listen = function()
{
  var backupCursor =
  {
    x: mapCursor.x,
    y: mapCursor.y
  };

  if (controller.up || controller.down || controller.left || controller.right)
  {
    mapCursor.manage();
    camera.manage();
  }
  if (dist(mapCursor, this.src) > this.src.equipment.range)
  {
    mapCursor.x = backupCursor.x;
    mapCursor.y = backupCursor.y;
  }
  this.manageRotations();
  if (controller.w)
  {
    this.rotation++;
    if (this.rotation == this.rotations.length)
    {
      this.rotation = 0;
    }
  }
  if (controller.x)
  {
    attack.cancel();
  }
  if (controller.y)
  {
    if (mapCursor.x != this.src.x || mapCursor.y != this.src.y)
     attack.confirm();
  }
}

attack.manageRotations = function()
{
  if (mapCursor.x < this.src.x)
  {
    if (xDist(mapCursor, this.src) > yDist(mapCursor, this.src))
    {
      this.rotations = [ 1 ];
    }
    else if (xDist(mapCursor, this.src) < yDist(mapCursor, this.src))
    {
      if (mapCursor.y < this.src.y)
      {
        this.rotations = [ 0 ];
      }
      else { this.rotations = [ 2 ]; }
    }
    else
    {
      if (mapCursor.y < this.src.y)
      {
        this.rotations = [ 0, 1 ];
      }
      else { this.rotations = [ 2, 1 ]; }
    }
  }
  if (mapCursor.x > this.src.x)
  {
    if (xDist(mapCursor, this.src) > yDist(mapCursor, this.src))
    {
      this.rotations = [ 3 ];
    }
    else if (xDist(mapCursor, this.src) < yDist(mapCursor, this.src))
    {
      if (mapCursor.y < this.src.y)
      {
        this.rotations = [ 0 ];
      }
      else { this.rotations = [ 2 ]; }
    }
    else
    {
      if (mapCursor.y < this.src.y)
      {
        this.rotations = [ 0, 3 ];
      }
      else { this.rotations = [ 3, 2 ]; }
    }
  }
  if (mapCursor.y < this.src.y)
  {
    if (xDist(mapCursor, this.src) > yDist(mapCursor, this.src))
    {
      if (mapCursor.x > this.src.x)
      {
        this.rotations = [ 0 ];
      }
      else { this.rotations = [ 1 ]; }
    }
    else if (xDist(mapCursor, this.src) < yDist(mapCursor, this.src))
    {
      this.rotations = [ 0 ];
    }
    else
    {
      if (mapCursor.x < this.src.x)
      {
        this.rotations = [ 0, 1 ];
      }
      else { this.rotations = [ 0, 3 ]; }
    }
  }
  if (mapCursor.y > this.src.y)
  {
    if (xDist(mapCursor, this.src) > yDist(mapCursor, this.src))
    {
      if (mapCursor.x > this.src.x)
      {
        this.rotations = [ 3 ];
      }
      else { this.rotations = [ 1 ]; }
    }
    else if (xDist(mapCursor, this.src) < yDist(mapCursor, this.src))
    {
      this.rotations = [ 2 ];
    }
    else
    {
      if ( mapCursor.x > this.src.x)
      {
        this.rotations = [ 2, 3 ];
      }
      else { this.rotations = [ 2, 1 ]; }
    }
  }
  if (this.rotations.length == 1)
  {
    this.rotation = 0;
  }
}

attack.drawPattern = function()
{
  var pattern = rotatePattern(this.pattern, this.rotations[this.rotation]);
  var i, j;
  var origin = {}
  origin.x = mapCursor.x - 2,
  origin.y = mapCursor.y - 2;
  console.log(this.rotations);
  for (i = 0; i < 5; i++)
  {
    for (j = 0; j < 5; j++)
    {
      if (pattern[i][j] != 0)
      {
        if (mapCursor.x != this.src.x || mapCursor.y != this.src.y)
        {
          screen.drawImage(this.gfx.overlay, 16*(origin.x + i - camera.x), 16*(origin.y + j - camera.y));
        }
      }
    }
  }
}