Hey I wrote this yesterday and today. Got the idea from my Turing module, but this ones kinda different
Java makes it easy. Tell me what you think and what I could do to make it better. I'll be posting a test class up soon but right now I NEED SLEEEEEEEEEEP *DROOL* Goodnight 
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/* The "HighscoreList" class
* Creates a highscore list for a game * with names and scores. * Scores can be added (automatticaly sorted) * You can get an array of scores, or a single score * Also different methods like clearing the list, getting the size of it, etc. */ import java.io.*; public class HighScoreList { //Default size and file name constants protected final int SIZE = 5; protected final String FILE_NAME = "highscore.dat"; //Size of the highscore list (number of entries) protected int size; //The file name protected String fileName; //Scores and names arrays protected int scores[]; protected String names[]; //////////////// //CONSTRUCTORS// //////////////// //Constructor that set size and filename to defaults public HighScoreList() throws IOException { //Set size and file name size = SIZE; fileName = FILE_NAME; //Set size of scores and names array; scores = new int[size + 1]; names = new String[size + 1]; //File object File file = new File(fileName); //Checks to see if the file specified is an already existing file //Or if we need to make a new one. if (file.exists()) { //Get the names and scores into the lists readScores(); } else { //Create file createFile(); //Set all the objects' scores arrays to blanks for (int i = 0; i < scores.length - 1; i++) { scores[i] = 0; names[i] = "---"; } } } //Constructor that sets size to specified and filename to default //Will only read the first [dSize] scores public HighScoreList(int dSize) throws IOException { //Set size and file name size = dSize; fileName = FILE_NAME; //Set size of scores and names array; scores = new int[size + 1]; names = new String[size + 1]; //File object File file = new File(fileName); //Checks to see if the file specified is an already existing file //Or if we need to make a new one. if (file.exists()) { //Get the names and scores into the lists readScores(); } else { //Create file createFile(); //Set all the objects' scores arrays to blanks for (int i = 0; i < scores.length - 1; i++) { scores[i] = 0; names[i] = "---"; } } } //Constructor that sets filename to specified and size to default public HighScoreList(String dFileName) throws IOException { //Set size and file name size = SIZE; fileName = dFileName; //Set size of scores and names array; scores = new int[size + 1]; names = new String[size + 1]; //File object File file = new File(fileName); //Checks to see if the file specified is an already existing file //Or if we need to make a new one. if (file.exists()) { //Get the names and scores into the lists readScores(); } else { //Create file createFile(); //Set all the objects' scores arrays to blanks for (int i = 0; i < scores.length - 1; i++) { scores[i] = 0; names[i] = "---"; } } } //Constructor that set size and filename to specified //Will only read the first [dSize] scores public HighScoreList(int dSize, String dFileName2) throws IOException { //Set size and file name size = dSize; fileName = dFileName2; //Set size of scores and names array; scores = new int[size + 1]; names = new String[size + 1]; //File object File file = new File(fileName); //Checks to see if the file specified is an already existing file //Or if we need to make a new one. if (file.exists()) { //Get the names and scores into the lists readScores(); } else { //Create file createFile(); //Set all the objects' scores arrays to blanks for (int i = 0; i < scores.length - 1; i++) { scores[i] = 0; names[i] = "---"; } } } ///////////// //PROTECTED// ///////////// //Bubble Sort (sorts according to scores and places names with) protected void sort() { //Temporary variables int tempScore; //Temporary score String tempName; //Temporary name //Sorted flag boolean sorted = true; //Continue sorted until the list is sorted do { //Reset flag sorted = true; //Check and sort for (int i = 0; i < scores.length - 1; i++) { if (scores[i] < scores[i+1]) { //Swap scores tempScore = scores[i+1]; scores[i+1] = scores[i]; scores[i] = tempScore; //Swap names tempName = names[i+1]; names[i+1] = names[i]; names[i] = tempName; //Flag not sorted sorted = false; } } } while (!sorted); } //Creates the highscore file, settings names to "---" and scores to 0 protected void createFile() throws IOException { //New PrintWriter to output to highscore file PrintWriter output = new PrintWriter(new FileWriter(fileName)); //Write as many blank entries as needed for (int i = 0; i < scores.length - 1; i++) { output.println("---" + "#" + 0 + "$"); } //Close stream output.close(); } //Reads the scores to local array protected void readScores() throws IOException { //New BufferedReader to get the scores from the highscore list BufferedReader input = new BufferedReader(new FileReader(fileName)); //Temporary input line String tempLine; char tempChLine[]; //Array of characters //Temporary score string String scoreStr; //Counting variable int j; //Read first line tempLine = input.readLine(); //Write as many blank entries as needed for (int i = 0; i < scores.length - 1; i++) { //Set the array of characters to line read from file tempChLine = tempLine.toCharArray(); //Clear string scoreStr = ""; names[i] = ""; //Reset counting variable j = 0; //Add the characters to name until marker # while (tempChLine[j] != '#') { names[i] += tempChLine[j]; j++; } j++; //Add the characters to score string until marker $ while (tempChLine[j] != '$') { scoreStr += tempChLine[j]; j++; } //Add integer value of scoreStr to score scores[i] = Integer.parseInt(scoreStr); //Read next line tempLine = input.readLine(); } //Close stream input.close(); } //Writes list of scores to file protected void writeScores() throws IOException { //New PrintWriter to output to highscore file PrintWriter output = new PrintWriter(new FileWriter(fileName)); //Write the scores for (int i = 0; i < scores.length - 1; i++) { output.println(names[i] + "#" + scores[i] + "$"); } //Close stream output.close(); } ////////// //PUBLIC// ////////// //Adds the specified score (w/ name) to the list and writes it to file public void addScore(String name, int score) throws IOException { //Add the score and its name to end of array names[size] = name; scores[size] = score; //Sorts them in sort(); } //Clears the highscore file (basically same as createFile(), but user can user it public void clearList() throws IOException { //New PrintWriter to output to highscore file PrintWriter output = new PrintWriter(new FileWriter(fileName)); //Write as many blank entries as needed for (int i = 0; i < scores.length - 1; i++) { output.println("---" + "#" + 0 + "$"); } //Close stream output.close(); } //Returns the size of the highscore list public int getSize() { return size; } //Returns the list of names public String[] getNames() { return names; } //Returns the list of scores public int[] getScores() { return scores; } //Returns top score holder's name public String getTopScoreHolder() { return names[1]; } //Returns top score holder's score public int getTopScore() { return scores[1]; } //Returns specified highscore holder's name //(returns error msg if value over list size) public String getScoreHolder(int place) { if (place < size) { return names[place]; } else { return "Invalid place"; } } //Returns specified highscore holder's score //(returns -1 if value over list size) public int getScore(int place) { if (place < size) { return scores[place]; } else { return -1; } } } |
