Homework SourseNeed a Java GUI layout for battleship game with 09 across an
Solution
package battleships;
import java.awt.Font;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JTextArea;
public class Battleships {
private char hitSymbol, missSymbol, emptySymbol;
private char[][] board;
private Ship[] ships;
private JFrame frame;
public Battleships(char hit, char miss, char empty) {
hitSymbol = hit;
missSymbol = miss;
emptySymbol = empty;
board = new char[9][9];
}
public static void showError() {
JOptionPane.showMessageDialog(null, \"Error, invalid input, please try again!\");
}
public Ship askForShip(char type, Ship[] _ships, int count, StringBuilder massage) {
Ship newShip = new Ship(type);
String sms = \"\";
String poss;
char first;
char second;
char third;
if (count != 0) {
sms += massage + \"---\ \";
}
while(true) {
String s = JOptionPane.showInputDialog(sms + \"Commander, Please input the location for \"+ newShip.getName() +\"?\ Enter row[A-J], column[0-9] and position[H or V], e.g. [A1H]\");
if (s.length() != 3) {
showError();
continue;
}
first = s.charAt(0);
second = s.charAt(1);
third = s.charAt(2);
if (first < 65 || first > 74) {
//JOptionPane.showMessageDialog(null, \"111Error, invalid input, please try again!\");
showError();
continue;
}
if (second < 48 || second > 57) {
//JOptionPane.showMessageDialog(null, \"222Error, invalid input, please try again!\");
showError();
continue;
}
if (third != 72 && third != 86) {
//JOptionPane.showMessageDialog(null, \"333Error, invalid input, please try again!\");
showError();
continue;
}
newShip.setLocation(first, second, third);
if (!newShip.isInBoundary()) {
showError();
continue;
}
boolean ifOverlap;
do {
int i;
ifOverlap = false;
for (i=0; i < count; i++) {
if (newShip.isOverlap(_ships[i])) {
showError();
ifOverlap = true;
}
}
if (!ifOverlap) {
if (third == \'H\')
poss=\"Horizontal\";
else
poss=\"Vertical\";
int count1 = count + 1;
massage.append(count1 +\". \"+ newShip.getName() +\" at row: \" + first +\", column: \"+second+\", position: \"+poss+\"\ \");
return newShip;
}
} while(!ifOverlap);
} //end of while loop
}
public String getRadar(int shotsLeft) {
String s = \"Shots Left:\" + shotsLeft + \" \ Radar Screen:\ \";
for (int i = 0; i < 9; i++) {
s += i + \" \";
}
s += \"\ \";
for (int i = 0; i < 9; i++) {
s += ((char) (65 + i)) + \" \";//print A-J
for (int j = 0; j < 9; j++) {
s += this.board[i][j] + \" \";
}
s += \"\ \";
}
s += \"---------------------\ \";
return s;
}
public void play(int numOfShots) {
int shotCount = 0;
int dead = 0;
for (int j = 0; j < 9; j++) {
for (int k = 0; k < 9; k++) {
this.board[j][k] = this.emptySymbol;
}
}
while (shotCount < numOfShots && dead != this.ships.length) {
JTextArea textarea = new JTextArea(getRadar(numOfShots - shotCount)
+ \"Captain, please call your shot?\ Enter row [A-J] and column[0-9]\ For example:D6\");
textarea.setFont(new Font(\"Monospaced\", Font.PLAIN, 14));
String s = (String) JOptionPane.showInputDialog( null, textarea, \"Input\", JOptionPane.QUESTION_MESSAGE, null, null, \"\");
if (s.length() == 2 && (int) s.charAt(0) >= 65 && (int) s.charAt(0) <= 74
&& (int) s.charAt(1) >= 48 && (int) s.charAt(1) <= 57
&& this.board[(int) s.charAt(0) - 65][s.charAt(1)-48] == this.emptySymbol) {
for (int j = 0; j < this.ships.length; j++) {
if (!this.ships[j].isSunk()) {
if (this.ships[j].getShot(s.charAt(0), s.charAt(1))) {
this.board[(int) s.charAt(0) - 65][s.charAt(1)-48] = this.hitSymbol;
if (this.ships[j].isSunk()) {
JOptionPane.showMessageDialog(null, this.ships[j].getName() + \" Sunk!\");
dead += 1;
}
break;
} else {
this.board[(int) s.charAt(0) - 65][s.charAt(1)-48] = this.missSymbol;
}
}
}
shotCount++;
} else {
showError();
}
}// end of shotting while loop
if (this.ships.length == dead) {
JOptionPane.showMessageDialog(null, \"Game Over, You Win!\");
} else {
JOptionPane.showMessageDialog(null, \"Game Over, You Lose!\");
}
}
public void prepareForBattle(char[] fleet) {
this.ships = new Ship[fleet.length];
StringBuilder s = new StringBuilder(\"Your Fleet at Service:\ \");
for (int i=0; i < fleet.length; i++) {
ships[i] = askForShip(fleet[i], ships, i, s);
}//end of fleet fall in
JOptionPane.showMessageDialog(null, s);
}
public static void main(String[] args) {
char[] fleetOfShips = {\'A\', \'B\', \'D\', \'S\', \'P\' };
Battleships game = new Battleships(\'X\', \'O\', \'.\');
game.prepareForBattle(fleetOfShips);
game.play(30);
}
}
