var armSize = 50;
var posX = 0;
var posY = 0;

var current = 0;

function drawArm()
{
  var send = [];
  if(current == 0)
  { // upper left
    send.push({x: posX + 0, y: posY + 0});

    send.push({x: posX + 0, y: posY + armSize});

    send.push({x: posX + armSize, y: posY + armSize});

  }

  if(current == 1)
  { // upper right
    send.push({x: posX + armSize * 2, y: posY + 0});

    send.push({x: posX + armSize, y: posY + 0});

    send.push({x: posX + armSize, y: posY + armSize});

  }

  if(current == 2)
  { // lower right
    send.push({x: posX + armSize * 2, y: posY + armSize * 2});
    send.push({x: posX + armSize * 2, y: posY + armSize});
    send.push({x: posX + armSize, y: posY + armSize});
  }

  if(current == 3)
  { // lower left
    send.push({x: posX + 0, y: posY + armSize * 2});
    send.push({x: posX + armSize, y: posY + armSize * 2});
    send.push({x: posX + armSize, y: posY + armSize});
  }

  if(current == 4)
  {
    // randomize posX, posY, set timeout and return
    posX = Math.floor(Math.random() * 1200);
    posY = Math.floor(Math.random() * 700);
    current = 0;
    setTimeout(drawArm, 100);
    return;
  }

  socket.emit('update', { points: send, color: color, id: 1 });

  current++;
  drawArm();
}
drawArm();