Esempio n. 1
0
 /**
  * A getter for the high scores list. Reads it directly from file and throws an error if the file
  * is not found (!working on this!).
  *
  * @return Object[][] where [i][0] is the rank (String), [i][1] is the name (String) and [i][2] is
  *     the score (Integer).
  */
 public static Object[][] getHighScore() {
   if (!new File("HighScores.dat").exists()) {
     // This object matrix actually stores the information of the high scores list
     Object[][] highScores = new Object[10][3];
     // We fill the high scores list with blank entries:  #.    " "    0
     for (int i = 0; i < highScores.length; i++) {
       highScores[i][0] = (i + 1) + ".";
       highScores[i][1] = " ";
       highScores[i][2] = 0;
     }
     // This actually writes and makes the high scores file
     try {
       ObjectOutputStream o = new ObjectOutputStream(new FileOutputStream("HighScores.dat"));
       o.writeObject(highScores);
       o.close();
     } catch (IOException e) {
       e.printStackTrace();
     }
   }
   try {
     // Read and return the read object matrix
     ObjectInputStream o = new ObjectInputStream(new FileInputStream("HighScores.dat"));
     Object[][] highScores = (Object[][]) o.readObject();
     o.close();
     return highScores;
   } catch (IOException | ClassNotFoundException e) {
     e.printStackTrace();
   }
   return null;
 }
Esempio n. 2
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  /**
   * Checks if the score is high enough to get to the high scores list, adds the name and score and
   * organizes the list. If HighScores.dat is not found, the method generates a blank one.
   *
   * @param name The nickname of the person getting to the list.
   * @param score The score gained.
   */
  public static void addHighScore(String name, int score) {

    // If we don't yet have a high scores table, we create a blank (and let the user know about it)
    if (!new File("HighScores.dat").exists()) {
      // This object matrix actually stores the information of the high scores list
      Object[][] highScores = new Object[10][3];
      // We fill the high scores list with blank entries:  #.    " "    0
      for (int i = 0; i < highScores.length; i++) {
        highScores[i][0] = (i + 1) + ".";
        highScores[i][1] = " ";
        highScores[i][2] = 0;
      }
      // This actually writes and makes the high scores file
      try {
        ObjectOutputStream o = new ObjectOutputStream(new FileOutputStream("HighScores.dat"));
        o.writeObject(highScores);
        o.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
    // We read the file to check if we have a new high score, and then rewrite the highscore
    // This is done even if we didn't previously have a high scores list
    try {
      ObjectInputStream o = new ObjectInputStream(new FileInputStream("HighScores.dat"));
      // The object matrix does the same as the previous one.
      // Here we just take what we read from the HighScores.dat to the Object[][] HighScores.
      Object[][] highScores = (Object[][]) o.readObject();
      // Then we start searching for an entry for which the score is smaller than the achieved score
      for (int i = 0; i < highScores.length; i++) {
        if ((Integer) highScores[i][2] < score) {
          // Once found we start to move entries, which are below the score we had, downwards.
          // I.e. 10. becomes whatever 9. was. 9. becomes what 8. was etc...
          for (int j = 9; j > i; j--) {
            highScores[j][0] = (j + 1) + ".";
            highScores[j][1] = highScores[j - 1][1];
            highScores[j][2] = highScores[j - 1][2];
          }
          // Then we write the score and the name we just got to the correct place
          highScores[i][0] = (i + 1) + ".";
          highScores[i][1] = name;
          highScores[i][2] = score;
          // And break the loop.
          /*Maybe this could be avoided somehow? I haven't been able to come up with an easy way yet.*/
          break;
        }
      }
      try {
        // And finally we overwrite the HighScores.dat with our highScores object matrix
        ObjectOutputStream n = new ObjectOutputStream(new FileOutputStream("HighScores.dat"));
        n.writeObject(highScores);
        n.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
    } catch (ClassNotFoundException | IOException e) {
      e.printStackTrace();
    }
  }