Ever wanted to make a game by coding in BlueJ..
Here is the code for CONNECT 4 GAME which one can easily run in BlueJ..
All credit goes to Chris Clarke .....He is the one who has made this.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Connect4 {
/**
* Program: Connect4.java
* Purpose: Stacking disk game for 2 players
* Creator: Shreshth Srivastava
* Created: 10.01.2014
* Modified: 13.02.2014 (JFrame)
*/
public static void main(String[] args) {
Connect4JFrame frame = new Connect4JFrame();
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
class Connect4JFrame extends JFrame implements ActionListener {
private Button btn1, btn2, btn3, btn4, btn5, btn6, btn7;
private Label lblSpacer;
MenuItem newMI, exitMI, redMI, yellowMI;
int[][] theArray;
boolean end=false;
boolean gameStart;
public static final int BLANK = 0;
public static final int RED = 1;
public static final int YELLOW = 2;
public static final int MAXROW = 6; // 6 rows
public static final int MAXCOL = 7; // 7 columns
public static final String SPACE = " "; // 18 spaces
int activeColour = RED;
public Connect4JFrame() {
setTitle("Connect4 by SHRESHTH SRIVASTAVA");
MenuBar mbar = new MenuBar();
Menu fileMenu = new Menu("File");
newMI = new MenuItem("New");
newMI.addActionListener(this);
fileMenu.add(newMI);
exitMI = new MenuItem("Exit");
exitMI.addActionListener(this);
fileMenu.add(exitMI);
mbar.add(fileMenu);
Menu optMenu = new Menu("Options");
redMI = new MenuItem("Red starts");
redMI.addActionListener(this);
optMenu.add(redMI);
yellowMI = new MenuItem("Yellow starts");
yellowMI.addActionListener(this);
optMenu.add(yellowMI);
mbar.add(optMenu);
setMenuBar(mbar);
// Build control panel.
Panel panel = new Panel();
btn1 = new Button("1");
btn1.addActionListener(this);
panel.add(btn1);
lblSpacer = new Label(SPACE);
panel.add(lblSpacer);
btn2 = new Button("2");
btn2.addActionListener(this);
panel.add(btn2);
lblSpacer = new Label(SPACE);
panel.add(lblSpacer);
btn3 = new Button("3");
btn3.addActionListener(this);
panel.add(btn3);
lblSpacer = new Label(SPACE);
panel.add(lblSpacer);
btn4 = new Button("4");
btn4.addActionListener(this);
panel.add(btn4);
lblSpacer = new Label(SPACE);
panel.add(lblSpacer);
btn5 = new Button("5");
btn5.addActionListener(this);
panel.add(btn5);
lblSpacer = new Label(SPACE);
panel.add(lblSpacer);
btn6 = new Button("6");
btn6.addActionListener(this);
panel.add(btn6);
lblSpacer = new Label(SPACE);
panel.add(lblSpacer);
btn7 = new Button("7");
btn7.addActionListener(this);
panel.add(btn7);
add(panel, BorderLayout.NORTH);
initialize();
// Set to a reasonable size.
setSize(1024, 768);
} // Connect4
public void initialize() {
theArray=new int[MAXROW][MAXCOL];
for (int row=0; row<MAXROW; row++)
for (int col=0; col<MAXCOL; col++)
theArray[row][col]=BLANK;
gameStart=false;
} // initialize
public void paint(Graphics g) {
g.setColor(Color.BLUE);
g.fillRect(110, 50, 100+100*MAXCOL, 100+100*MAXROW);
for (int row=0; row<MAXROW; row++)
for (int col=0; col<MAXCOL; col++) {
if (theArray[row][col]==BLANK) g.setColor(Color.WHITE);
if (theArray[row][col]==RED) g.setColor(Color.RED);
if (theArray[row][col]==YELLOW) g.setColor(Color.YELLOW);
g.fillOval(160+100*col, 100+100*row, 100, 100);
}
check4(g);
} // paint
public void putDisk(int n) {
// put a disk on top of column n
// if game is won, do nothing
if (end) return;
gameStart=true;
int row;
n--;
for (row=0; row<MAXROW; row++)
if (theArray[row][n]>0) break;
if (row>0) {
theArray[--row][n]=activeColour;
if (activeColour==RED)
activeColour=YELLOW;
else
activeColour=RED;
repaint();
}
}
public void displayWinner(Graphics g, int n) {
g.setColor(Color.BLACK);
g.setFont(new Font("Courier", Font.BOLD, 100));
if (n==RED)
g.drawString("Red wins!", 100, 400);
else
g.drawString("Yellow wins!", 100, 400);
end=true;
}
public void check4(Graphics g) {
// see if there are 4 disks in a row: horizontal, vertical or diagonal
// horizontal rows
for (int row=0; row<MAXROW; row++) {
for (int col=0; col<MAXCOL-3; col++) {
int curr = theArray[row][col];
if (curr>0
&& curr == theArray[row][col+1]
&& curr == theArray[row][col+2]
&& curr == theArray[row][col+3]) {
displayWinner(g, theArray[row][col]);
}
}
}
// vertical columns
for (int col=0; col<MAXCOL; col++) {
for (int row=0; row<MAXROW-3; row++) {
int curr = theArray[row][col];
if (curr>0
&& curr == theArray[row+1][col]
&& curr == theArray[row+2][col]
&& curr == theArray[row+3][col])
displayWinner(g, theArray[row][col]);
}
}
// diagonal lower left to upper right
for (int row=0; row<MAXROW-3; row++) {
for (int col=0; col<MAXCOL-3; col++) {
int curr = theArray[row][col];
if (curr>0
&& curr == theArray[row+1][col+1]
&& curr == theArray[row+2][col+2]
&& curr == theArray[row+3][col+3])
displayWinner(g, theArray[row][col]);
}
}
// diagonal upper left to lower right
for (int row=MAXROW-1; row>=3; row--) {
for (int col=0; col<MAXCOL-3; col++) {
int curr = theArray[row][col];
if (curr>0
&& curr == theArray[row-1][col+1]
&& curr == theArray[row-2][col+2]
&& curr == theArray[row-3][col+3])
displayWinner(g, theArray[row][col]);
}
}
} // end check4
public void actionPerformed(ActionEvent e) {
if (e.getSource() == btn1)
putDisk(1);
else if (e.getSource() == btn2)
putDisk(2);
else if (e.getSource() == btn3)
putDisk(3);
else if (e.getSource() == btn4)
putDisk(4);
else if (e.getSource() == btn5)
putDisk(5);
else if (e.getSource() == btn6)
putDisk(6);
else if (e.getSource() == btn7)
putDisk(7);
else if (e.getSource() == newMI) {
end=false;
initialize();
repaint();
} else if (e.getSource() == exitMI) {
System.exit(0);
} else if (e.getSource() == redMI) {
// don't change colour to play in middle of game
if (!gameStart) activeColour=RED;
} else if (e.getSource() == yellowMI) {
if (!gameStart) activeColour=YELLOW;
}
} // end ActionPerformed
} // class
Any problem regarding any program in JAVA...just ask..!!!
