update,

_resources/it114105/itp3914/Assignment/22-23/Battleships.java

@@ -0,0 +1,206 @@
+import java.util.Scanner;
+
+public class Battleships {
+
+    public final static int DEFAULT_GAME_BOARD_SIZE = 10;
+    public final static int DEFAULT_GAME_NUM_GROUP_SHIP = 3;
+
+    private int[][] board;
+    private Scanner input;
+    private int launched = 1, hit = 0;
+
+    // -1 missing
+    // 0 null
+    // 1 hit
+    // 2 ship
+
+    public Battleships() {
+        board = new int[DEFAULT_GAME_BOARD_SIZE][DEFAULT_GAME_BOARD_SIZE];
+        setShips();
+    }
+
+    public Battleships(int size) {
+        board = new int[size][size];
+        setShips();
+    }
+
+    public Battleships(int size, Ship[] ships) {
+        board = new int[size][size];
+        setShips(ships);
+    }
+
+    public void setScanner(Scanner scanner) {
+        this.input = scanner;
+    }
+
+    public void start() {
+        System.out.println("---- Battleship Game----");
+        showBoard(false);
+        while (!isWin()) {
+
+            System.out.print("Set your missile [XY] (x to exit) :");
+            char[] misile = input.nextLine().toCharArray();
+
+            if (misile.length == 1) {
+                if (misile[0] == 'c')
+                    showBoard(true);
+                else if (misile[0] == 'x') {
+                    System.out.println("Bye!");
+                    System.exit(1);
+                } else
+                    System.out.println("Mismatch!!");
+
+            } else if (misile.length == 2) {
+                int x = Integer.parseInt(String.valueOf(misile[0]));
+                int y = Integer.parseInt(String.valueOf(misile[1]));
+                put(x, y);
+                showBoard(false);
+                showStatus();
+            } else {
+                System.out.println("Mismatch!!");
+            }
+        }
+        System.out.println("You have hit all battleships!");
+    }
+
+    public void put(int x, int y) {
+        int val = board[x][y];
+        if (val == 0) {
+            System.out.println("Missed.");
+            board[x][y] = -1;
+            launched++;
+        } else if (val == 2) {
+            System.out.println("It's a hit!!");
+            board[x][y] = 1;
+            hit++;
+            launched++;
+        } else {
+            System.out.println("You have already fired this area.");
+        }
+    }
+
+    public void setShips(Ship[] ships) {
+
+        for (Ship ship : ships) {
+            this.board[ship.x][ship.y] = 2;
+        }
+    }
+
+    public void setShips() {
+        setShips(createShip(this.board));
+    }
+
+    public static Ship[] createShip(int[][] boards) {
+        return createShip(boards, DEFAULT_GAME_NUM_GROUP_SHIP, DEFAULT_GAME_NUM_GROUP_SHIP);
+    }
+
+    public static Ship[] createShip(int[][] board, int numOfGroupShip, int numOfShip) {
+
+        Ship[] ships = new Ship[numOfGroupShip * numOfShip];
+
+        for (int i = 0; i < numOfGroupShip * numOfShip; i += 3) {
+            int count = 0;
+            while (count++ < numOfShip) {
+
+                int cX;
+                int cY;
+                boolean isHorizontally = (Math.random() > 0.5);
+
+                do {
+                    cX = (int) Math.ceil(Math.random() * (board.length - 1 - 2));
+                    cY = (int) Math.ceil(Math.random() * (board[0].length - 1 - 2));
+                    ships[i] = new Ship(cX, cY);
+                } while ((!isHorizontally && board[cX][cY] == 2 || board[cX + 1][cY] == 2 || board[cX + 2][cY] == 2)
+                        || (isHorizontally && board[cX][cY] == 2 || board[cX][cY + 1] == 2 || board[cX][cY + 2] == 2));
+
+                for (int j = 0; j < numOfShip; j++) {
+                    if (!isHorizontally)
+                        ships[i + j] = new Ship(cX + j, cY);
+                    else
+                        ships[i + j] = new Ship(cX, cY + j);
+                }
+
+            }
+        }
+
+        return ships;
+
+    }
+
+    public void showStatus() {
+        System.out.printf("Launched:%d, Hit: %d\n", launched, hit);
+    }
+
+    public boolean isWin() {
+        for (int i = 0; i < board.length; i++) {
+            for (int j = 0; j < board[i].length; j++) {
+                int val = board[i][j];
+                if (val == 2)
+                    return false;
+            }
+        }
+        return true;
+    }
+
+    public void showBoard(boolean showHidden) {
+        System.out.println();
+
+        int size = Integer.toString(board.length - 1).length();
+        if (size < 2)
+            size++;
+        for (int i = 0; i < size + 1; i++)
+            System.out.print(" ");
+        System.out.print(" ");
+        for (int i = 0; i < board.length; i++)
+            System.out.printf(" %d", i);
+        System.out.println();
+
+        for (int i = 0; i < size + 1; i++)
+            System.out.print("-");
+        System.out.print("+-");
+
+        for (int i = 0; i < board.length; i++)
+            for (int j = 0; j < Integer.toString(i).length() + 1; j++)
+                System.out.print("-");
+        System.out.println();
+
+        for (int i = 0; i < board.length; i++) {
+            System.out.printf("%d", i);
+
+            for (int j = 0; j < size - Integer.toString(i).length() + 1; j++)
+                System.out.print(" ");
+
+            System.out.print("| ");
+
+            for (int j = 0; j < board[i].length; j++) {
+
+                int val = board[i][j];
+                if (val == 1)
+                    System.out.print("#");
+                else if (val == -1)
+                    System.out.print("O");
+                else if (showHidden && val == 2)
+                    System.out.print("S");
+                else
+                    System.out.print(".");
+
+                for (int k = 0; k < Integer.toString(j).length(); k++)
+                    System.out.print(" ");
+            }
+
+            System.out.println();
+        }
+
+    }
+
+}
+
+class Ship {
+    public int x;
+    public int y;
+
+    public Ship(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+}