public void writeTo(com.google.protobuf.CodedOutputStream output)
                        throws java.io.IOException {
      getSerializedSize();
      for (int i = 0; i < isVisible_.size(); i++) {
        output.writeFixed32(3, isVisible_.get(i));
      }
      for (int i = 0; i < isExplored_.size(); i++) {
        output.writeFixed32(4, isExplored_.get(i));
      }
      for (int i = 0; i < hasCreep_.size(); i++) {
        output.writeFixed32(5, hasCreep_.get(i));
      }
      getUnknownFields().writeTo(output);
    }