Tutorials
Review IV
VIDEO
Game Class
Here we make the Game class implement the ActionListener interface so that the game can be notified by the gameboard when the level has been won or lost. In addition, we make the following changes/additions:
- Inset the game board within the center of a border layout with the level number shown in the northern panel.
- Add two buttons at the start of the game that allow the user to select Text or Icon versions of the game.
- Includes a
changeLevel()method that loads a level and creates the appropriate gameboard. - Add code to load the next level whenever a level is completed or reload the same level whenever the level is lost.
public class Game extends JFrame implements ActionListener {
private int level = 1;
private int tileHeight;
private int tileWidth;
private JPanel gamePlay;
public Game(String title) {
super(title);
this.setSize(360, 200);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
setLayout(new BorderLayout());
gamePlay = new JPanel();
gamePlay.setLayout(new BorderLayout());
gamePlay.add(new JLabel("Maniacal Blocks"), BorderLayout.NORTH);
JPanel startGame = new JPanel();
startGame.setLayout(new FlowLayout());
JButton textPlay = new JButton("Text");
textPlay.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
try {
changeLevel();
} catch (IOException e) {
add(new JLabel("Could not load any levels, this game is useless."));
}
}
});
startGame.add(textPlay);
JButton iconPlay = new JButton("Icon");
iconPlay.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
try {
Tile.TEXT_MODE = false;
changeLevel();
} catch (IOException e) {
add(new JLabel("Could not load any levels, this game is useless."));
}
}
});
startGame.add(iconPlay);
gamePlay.add(startGame, BorderLayout.CENTER);
add(gamePlay);
}
public void changeLevel() throws IOException {
GameBoard gameboard = new GameBoard("levels/level" + level + ".txt", this);
gamePlay.remove(((BorderLayout)gamePlay.getLayout()).getLayoutComponent(BorderLayout.CENTER));
gamePlay.remove(((BorderLayout)gamePlay.getLayout()).getLayoutComponent(BorderLayout.NORTH));
gamePlay.add(new JLabel("level " + level), BorderLayout.NORTH);
gamePlay.add(gameboard, BorderLayout.CENTER);
add(gamePlay);
tileHeight = Tile.TEXT_MODE ? 30 : Tile.PLAYER_ICON.getIconHeight();
tileWidth = Tile.TEXT_MODE ? 20 : Tile.PLAYER_ICON.getIconWidth()+2;
this.setSize(gameboard.numColumns()*tileWidth, gameboard.numRows()*tileHeight);
this.pack();
this.invalidate();
}
public static void main(String[] args) {
JFrame game = new Game("Maniacal Blocks");
game.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e) {
if(e.getID()==Move.DIRECTION_WIN) {
level++;
try {
changeLevel();
} catch (IOException ex) {
// All done
JOptionPane.showMessageDialog(this, "You completed all the levels");
JOptionPane.showMessageDialog(this, "Don't forget to study for your finals");
this.setVisible(false);
this.dispose();
}
}
if(e.getID()==Move.DIRECTION_LOSE) {
try {
changeLevel();
} catch (IOException ex) {
JOptionPane.showMessageDialog(this, "Major LOSER");
this.setVisible(false);
this.dispose();
}
}
}
}
MoveHandler Implementation
The MoveHandler class has been updated to use a timer to move the player across the gameboard. In addition, an enableTiles() method was added to the GameBoard so that the tiles would not be active while the player is moving across the board.
private void enableTiles(boolean enable) {
for(Tile[] rows : gameboard) {
for(Tile tile : rows) {
tile.setEnabled(enable);
}
}
}
private class MoveHandler implements ActionListener {
private static final int TIMER_DELAY = 100;
private Timer timer;
private Move currentMove;
@Override
public void actionPerformed(ActionEvent event) {
Tile tile = (Tile)event.getSource();
Position clickPos = tile.getPosition();
if(!playerPos.equals(tile.getPosition())
&& (clickPos.row==playerPos.row || clickPos.col==playerPos.col)) {
determineMove(clickPos);
timer = new javax.swing.Timer(TIMER_DELAY, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
currentMove = processMove(currentMove);
if(currentMove.getDirection()==Move.DIRECTION_WIN) {
JOptionPane.showMessageDialog(GameBoard.this, "Winner");
if(listener!=null) {
listener.actionPerformed(new ActionEvent(this, Move.DIRECTION_WIN, "win"));
}
timer.stop();
} else if(currentMove.getDirection()==Move.DIRECTION_LOSE) {
JOptionPane.showMessageDialog(GameBoard.this, "Loser");
if(listener!=null) {
listener.actionPerformed(new ActionEvent(this, Move.DIRECTION_LOSE, "lose"));
}
timer.stop();
} else if(currentMove.getDirection()==Move.DIRECTION_STOP) {
enableTiles(true);
timer.stop();
}
}
});
enableTiles(false);
timer.start();
}
}
private void determineMove(Position clickPos) {
if(clickPos.colplayerPos.col) {
currentMove = new Move(Move.DIRECTION_EAST, playerPos);
} else if(clickPos.rowplayerPos.row) {
currentMove = new Move(Move.DIRECTION_SOUTH, playerPos);
}
}
private Move processMove(Move move) {
int nextCol = playerPos.col;
int nextRow = playerPos.row;
gameboard[nextCol][nextRow].restoreLooks();
switch (move.getDirection()) {
case Move.DIRECTION_NORTH:
--nextRow;
break;
case Move.DIRECTION_SOUTH:
++nextRow;
break;
case Move.DIRECTION_EAST:
++nextCol;
break;
case Move.DIRECTION_WEST:
--nextCol;
break;
}
Move newMove = null;
try {
newMove = gameboard[nextCol][nextRow].processMove(move);
} catch(ArrayIndexOutOfBoundsException e) {
newMove = new Move(Move.DIRECTION_LOSE, playerPos);
}
gameboard[newMove.getPosition().col][newMove.getPosition().row].playerLooks();
playerPos = newMove.getPosition();
return newMove;
}
}
Tile Classes
Here are a few of the Tile classes in their "final" form:
Tile Class
public class Tile extends JButton {
protected final Position position;
private static final Icon ICON = new ImageIcon(GameBoard.assetFolder + "/blank.png");
public static final Icon PLAYER_ICON = new ImageIcon(GameBoard.assetFolder + "/player.png");
private static final char TYPE = ' ';
public static boolean TEXT_MODE = true;
public Tile(Position position) {
if(!TEXT_MODE) {
setBorderPainted(false);
}
setMargin(new Insets(0, 0, 0, 0));
setContentAreaFilled(false);
setFocusPainted(false);
this.position = position;
restoreLooks();
}
public Move processMove(Move move) {
return new Move(move.getDirection(), position);
}
public void restoreLooks() {
if(TEXT_MODE) {
setText("" + TYPE);
} else {
setIcon(ICON);
}
}
public void playerLooks() {
if(TEXT_MODE) {
setText("@");
} else {
setIcon(PLAYER_ICON);
}
}
public Position getPosition() {
return position;
}
}
WinTile Class
public class WinTile extends Tile {
private static final Icon ICON = new ImageIcon(GameBoard.assetFolder + "/win.png");
private static final char TYPE = 'X';
public WinTile(Position position) {
super(position);
}
@Override
public Move processMove(Move move) {
return new Move(Move.DIRECTION_WIN, position);
}
@Override
public void restoreLooks() {
if(TEXT_MODE) {
setText("" + TYPE);
} else {
setIcon(ICON);
}
}
}
VerticalTunnel Class
public class VerticalTunnel extends Tile {
private static final Icon ICON = new ImageIcon(GameBoard.assetFolder + "/vTunnel.png");
private static final char TYPE = 'H';
public VerticalTunnel(Position position) {
super(position);
}
@Override
public Move processMove(Move move) {
Move nextMove = new Move(Move.DIRECTION_STOP, move.getPosition());
if(move.getDirection()==Move.DIRECTION_NORTH || move.getDirection()==Move.DIRECTION_SOUTH) {
nextMove = super.processMove(move);
}
return nextMove;
}
@Override
public void restoreLooks() {
if(TEXT_MODE) {
setText("" + TYPE);
} else {
setIcon(ICON);
}
}
}
Javadoc and Jar Generation VIDEO
We can use Eclipse to generate documentation webpages of the javadoc. We can also create a .jar file that contains all the class files needed to run our program.
Last modified: Monday, 15-Feb-2016 23:33:29 CST
