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      GameDev.net and CRC Press have teamed up to bring a free ebook of content curated from top titles published by CRC Press. The freebook, Practices of Game Design & Indie Game Marketing, includes chapters from The Art of Game Design: A Book of Lenses, A Practical Guide to Indie Game Marketing, and An Architectural Approach to Level Design. The GameDev.net FreeBook is relevant to game designers, developers, and those interested in learning more about the challenges in game development. We know game development can be a tough discipline and business, so we picked several chapters from CRC Press titles that we thought would be of interest to you, the GameDev.net audience, in your journey to design, develop, and market your next game. The free ebook is available through CRC Press by clicking here. The Curated Books The Art of Game Design: A Book of Lenses, Second Edition, by Jesse Schell Presents 100+ sets of questions, or different lenses, for viewing a game’s design, encompassing diverse fields such as psychology, architecture, music, film, software engineering, theme park design, mathematics, anthropology, and more. Written by one of the world's top game designers, this book describes the deepest and most fundamental principles of game design, demonstrating how tactics used in board, card, and athletic games also work in video games. It provides practical instruction on creating world-class games that will be played again and again. View it here. A Practical Guide to Indie Game Marketing, by Joel Dreskin Marketing is an essential but too frequently overlooked or minimized component of the release plan for indie games. A Practical Guide to Indie Game Marketing provides you with the tools needed to build visibility and sell your indie games. With special focus on those developers with small budgets and limited staff and resources, this book is packed with tangible recommendations and techniques that you can put to use immediately. As a seasoned professional of the indie game arena, author Joel Dreskin gives you insight into practical, real-world experiences of marketing numerous successful games and also provides stories of the failures. View it here. An Architectural Approach to Level Design This is one of the first books to integrate architectural and spatial design theory with the field of level design. The book presents architectural techniques and theories for level designers to use in their own work. It connects architecture and level design in different ways that address the practical elements of how designers construct space and the experiential elements of how and why humans interact with this space. Throughout the text, readers learn skills for spatial layout, evoking emotion through gamespaces, and creating better levels through architectural theory. View it here. Learn more and download the ebook by clicking here. Did you know? GameDev.net and CRC Press also recently teamed up to bring GDNet+ Members up to a 20% discount on all CRC Press books. Learn more about this and other benefits here.


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About derkotah

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  1. [quote name='PsychotikRabbit' timestamp='1355752968' post='5011693'] You are calling the method to highlight solution squares on the mouseReleased event instead of the mousePressed. MousePressed is the trigger for your "drag" and MouseReleased is the trigger for your "drop". What do you need to know exactly about mouse listeners ? [/quote] I've tried the method in both mousePressed and MouseDragged and both come up null. I wanted to use the BoardState class to figure out the square's location and chesspiece, so that I can verify whether it is null or not, but I haven't exactly found a way to do that as I can't pass in any parameters to a mouseEvent. I'm knowledgeable enough about mouseListeners to complete the task, it's more rather how to implement it that's keeping me back.
  2. I'm trying to implement MouseListeners for my Chess Code, I'm using MousePressed and Mouse Released as it is not drag and drop. I have to grab the piece from the firstClick and show all the possible movements for that Piece by highlighting them. What would be the best way to implement this? As of now I have a class called MouseController that is added to each Square that creates a chessboard (using a double array). Hopefully someone can help me out, and if you need to see more code I can provide it! [CODE] public class MouseController implements MouseListener { @Override public void mouseClicked(MouseEvent arg0) { // TODO Auto-generated method stub } @Override public void mouseEntered(MouseEvent arg0) { // TODO Auto-generated method stub } @Override public void mouseExited(MouseEvent arg0) { // TODO Auto-generated method stub } @Override public void mousePressed(MouseEvent event) { } @Override public void mouseReleased(MouseEvent event) { Square square = (Square) event.getSource(); if(square.getPiece() != null) { ArrayList<Location> moveList = square.getPiece().getMoves(); for(Location l: moveList) { int x = l.getxCoordinate(); int y = l.getyCoordinate(); square.highLightSquare(x,y); } } else { System.out.println("there is nothing ot click!"); } // Square square = (Square)event.getSource(); // Location location = square.getSquareLocation(); // if(square != null) // { // //get the chesspieces possible moves and highlight them // System.out.println("I got here"); // } } } [/CODE] [CODE] public class Square extends JPanel { private ChessPiece piece; private Location squareLocation; private Color squareColor; private BoardFrame bf; /** * */ public Square(ChessPiece pieceType , Location squareLocation) { this.squareLocation = squareLocation; this.piece = pieceType; } public Color getSquareColor() { return squareColor; } public void setSquareColor(Color squareColor) { this.squareColor = squareColor; } /** * * @return */ public Location getSquareLocation() { return squareLocation; } /** * * @param squareLocation */ public void setSquareLocation(Location squareLocation) { this.squareLocation = squareLocation; } /** * @return occupying piece or null if unoccupied */ public ChessPiece getPiece() { return piece; } /** * @param new occupying piece */ public void setPiece(ChessPiece piece) { this.piece = piece; } /** * hightlights the square that has been clicked on * @param squareToHighlightLocation */ public void highLightSquare(int x, int y) { setBackground(Color.GREEN); repaint(); validate(); } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((squareLocation == null) ? 0 : squareLocation.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; Square other = (Square) obj; if (squareLocation == null) { if (other.squareLocation != null) return false; } else if (!squareLocation.equals(other.squareLocation)) return false; return true; } } [/CODE] [CODE] public abstract class ChessPiece { private Color pieceColor; private JLabel pieceImage; private ArrayList<Location> moveList; /** * ChessPiece hold a color and an image * @param pieceColor * color of the piece * @param image * piece image */ public ChessPiece(Color pieceColor) { this.pieceColor = pieceColor; } /** * let location be BoardState location(piece) * create Movelist) * create traget(location + 1) * if target is not occupied by players color * add to movelist * @param boardState * current state of the board * @return * possible locations */ public abstract ArrayList<Location> getPossibleMoves(Square endingLocation, BoardFrame bf); public ArrayList<Location> getMoves() { return this.moveList; } /** * gets the color of the piece * @return color of the piece */ public Color getColor() { return this.pieceColor; } /** * gets the imageicon for the image * @return the piece image */ public JLabel getImage() { return this.pieceImage; } public JLabel createImage(String imagePath) { pieceImage = new JLabel(new ImageIcon(imagePath)); return pieceImage; } } [/CODE] [CODE] *Model for the Chess Game holds all board data */ public class BoardState implements Serializable { private HashMap<Square, ChessPiece> boardStateMap; private BoardFrame boardFrame; public static final String SET_PIECE = "SetPiece"; public static final String REMOVE_PIECE = "RemovePiece"; private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(this); public void addPropertyChangeListener(PropertyChangeListener listener) { this.propertyChangeSupport.addPropertyChangeListener(listener); } public void removePropertyChangeListener(PropertyChangeListener listener) { this.propertyChangeSupport.removePropertyChangeListener(listener); } /** * creates a new board state HashMap */ public BoardState() { boardStateMap = new HashMap<Square, ChessPiece>(); } public void removePiece(Square currentSquare) { boardStateMap.remove(currentSquare); this.propertyChangeSupport.firePropertyChange(REMOVE_PIECE, null, currentSquare); } public void setPiece(Square currentSquare, Square landingSquare) { boardStateMap.put(landingSquare, currentSquare.getPiece()); this.propertyChangeSupport.firePropertyChange(SET_PIECE, currentSquare, landingSquare); } public ChessPiece getPiece(Location location) { Square square = new Square(null, location); return boardStateMap.get(square); } /** * gets called when the board state needs to be seen * @return board state map */ public HashMap<Square, ChessPiece> getBoardStateMap() { return boardStateMap; } /** * updates the boardstate * @param key * @param value */ public void setBoardStateMap(Square key, ChessPiece value) { boardStateMap.put(key, value); } } [/CODE] [CODE] /** * creates a JFrame */ public BoardFrame(final BoardState bs) { bs.addPropertyChangeListener(new PropertyChangeListener() { public void propertyChange(PropertyChangeEvent e) { String type = e.getPropertyName(); if(type.equals(bs.SET_PIECE)) { Square landingSquare = (Square)e.getNewValue(); Square currentSquare = (Square)e.getOldValue(); Square landingSquareCoods = chessBoard[landingSquare.getSquareLocation().getxCoordinate()][landingSquare.getSquareLocation().getyCoordinate()]; Square currentSquareCoods = chessBoard[currentSquare.getSquareLocation().getxCoordinate()][currentSquare.getSquareLocation().getyCoordinate()]; if(landingSquare.getPiece() == null) { landingSquareCoods.add(currentSquare.getPiece().getImage()); framePanel.validate(); } else { JOptionPane.showConfirmDialog(null, "This spot has already been taken!"); } } if(type.equals(bs.REMOVE_PIECE)) { Square currentSquare = (Square)e.getNewValue(); Square currentSquareCoods = chessBoard[currentSquare.getSquareLocation().getxCoordinate()][currentSquare.getSquareLocation().getyCoordinate()]; if(currentSquare.getPiece() != null) { currentSquareCoods.removeAll(); currentSquareCoods.repaint(); framePanel.validate(); } else { JOptionPane.showConfirmDialog(null, "There is no piece to move1"); } } } }); chessFrame = new JFrame("Chess"); chessFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); chessFrame.setSize(FRAME_WIDTH, FRAME_HEIGHT); chessFrame.setLayout(new BorderLayout()); chessFrame.setResizable(false); createBoard(); chessFrame.setVisible(true); } /** * creates the essentials needed to make the boardframe */ private void createBoard() { createTopPanelForFrame(); createWestPanelForFrame(); // createEastPanelForFrame(); createGridLayoutPanelForFrame(); createBoardSquares(); createBoardLabels(); } /** * creates the top panel which will hold the labels A-H */ private void createTopPanelForFrame() { topPanel = new JPanel(); topPanel.setSize(TOP_PANEL_WIDTH, TOP_PANEL_HEIGHT); topPanel.setLayout(new GridLayout(TOP_PANEL_ROW, TOP_PANEL_COLUMN)); chessFrame.add(topPanel, BorderLayout.NORTH); } /** * creates the top panel which will hold the labels 1-8 */ private void createWestPanelForFrame() { westPanel = new JPanel(); westPanel.setSize(WEST_PANEL_WIDTH, WEST_PANEL_HEIGHT); westPanel.setLayout(new GridLayout(WEST_PANEL_ROW, WEST_PANEL_COLUMN)); chessFrame.add(westPanel, BorderLayout.WEST); } // public void createEastPanelForFrame() // { // eastPanel = new JPanel(); // eastPanel.setSize(WEST_PANEL_WIDTH, WEST_PANEL_HEIGHT); // eastPanel.setLayout(new GridLayout(1,1)); // chessFrame.add(eastPanel, BorderLayout.EAST); // } /** * creates a Panel that has a GridLayout and is added to the frame */ private void createGridLayoutPanelForFrame() { framePanel = new JPanel(); framePanel.setSize(PANEL_WIDTH, PANEL_HEIGHT); framePanel.setLayout(new GridLayout(BOARD_SIZE, BOARD_SIZE)); chessFrame.add(framePanel, BorderLayout.CENTER); } /** * creates the alternating squares on the board */ private void createBoardSquares() { MouseController squareController = new MouseController(); for(int i = 1; i <= BOARD_SIZE; i ++) { for(int j = 1; j <= BOARD_SIZE; j++) { Location squareLocation = new Location(i,j); chessBoard[i][j] = new Square(null, squareLocation); chessBoard[i][j].addMouseListener(squareController); if((i + j) % 2 == 1) { chessBoard[i][j].setBackground(Color.WHITE); chessBoard[i][j].addMouseListener(squareController); } else { chessBoard[i][j].setBackground(Color.BLACK); } framePanel.add(chessBoard[i][j]); } } } /** * creates the A-H, 1-8 and Player's Turn Labels */ private void createBoardLabels() { ALabel = new JLabel("A"); topPanel.add(ALabel); BLabel = new JLabel("B"); topPanel.add(BLabel); CLabel = new JLabel("C"); topPanel.add(CLabel); DLabel = new JLabel("D"); topPanel.add(DLabel); ELabel = new JLabel("E"); topPanel.add(ELabel); FLabel = new JLabel("F"); topPanel.add(FLabel); GLabel = new JLabel("G"); topPanel.add(GLabel); HLabel = new JLabel("H"); topPanel.add(HLabel); OneLabel = new JLabel("1"); TwoLabel = new JLabel("2"); ThreeLabel = new JLabel("3"); FourLabel = new JLabel("4"); FiveLabel = new JLabel("5"); SixLabel = new JLabel("6"); SevenLabel = new JLabel("7"); EightLabel = new JLabel("8"); westPanel.add(EightLabel); westPanel.add(SevenLabel); westPanel.add(SixLabel); westPanel.add(FiveLabel); westPanel.add(FourLabel); westPanel.add(ThreeLabel); westPanel.add(TwoLabel); westPanel.add(OneLabel); PlayerTurnLabel = new JLabel("? Turn"); // eastPanel.add(PlayerTurnLabel); } /** * set x Coordinate to pieceLocations x coordinate * set y Coordinate to pieceLocations y coordinate * * @param pieceLocation */ public void addPieceToBoard(Location pieceLocation, ChessPiece pieceToAdd, BoardState bs) { int xCoordinate = pieceLocation.getxCoordinate(); int yCoordinate = pieceLocation.getyCoordinate(); chessBoard[xCoordinate][yCoordinate].add(pieceToAdd.getImage()); chessBoard[xCoordinate][yCoordinate].repaint(); framePanel.validate(); } public boolean isSquareNull(int x, int y) { boolean isNull; if(chessBoard[x][y].getPiece() == null) { isNull = true; } else { isNull = false; } return isNull; } } [/CODE]