RoomPos equality

somePosThing.js

saveRoomPos(target) {
  var pos = target.pos ? target.pos : target
  if (!Memory.positions) Memory.positions = [];
  Memory.positions.push({x: pos.x, y: pos.y, roomName: pos.roomName});
}
isInMemory(target) {
  if (!Memory.positions) return false;
  return _.find(Memory.positions, function(pos) new RoomPosition(pos.x, pos.y, pos.roomName).isEqualTo(target)) != null;
}