code: public void addCharacter(int code, int xadvance, int x, int y, int width, int height,int yoffset) {
          chars.add(new CharData(code, xadvance, x, y, width, height,size + yoffset));
      }
docs: Add a character to the data set
  
  @param code The character code
  @param xadvance The advance on the x axis after writing this character
  @param x The x position on the sheet of the character
  @param y The y position on the sheet of the character
  @param width The width of the character on the sheet
  @param height The height of the character on the sheet
  @param yoffset The offset on the y axis when drawing the character