Thread: Fixing my Chess Program setup

Hi there, I am making my chess game in Java. I have designed the Board and have all the pieces placed and squares colored, but I need to figure out how to do two things, firstly how do I get the mouse to drag and move all of my Sprites/Images, then how do I make my code more efficient? I am individually coloring the Black and White tiles but I am pretty sure there is a more efficient way to do that.

Thanks Totara

Board Class

import java.awt.Color;
import java.awt.Graphics;
 
import javax.swing.JComponent;
 
import com.teamfission.chess.References;
 
public class Board extends JComponent {
 
	public void paint(Graphics g) {
		References ref = new References();
		Color blackTile = new Color(210, 180, 140);
		Color whiteTile = new Color(255, 255, 255);
 
		g.setColor(Color.gray);
		g.fillRect(0, 0, ref.width, ref.height);
 
		if (ref.debugMode) {
			g.setColor(Color.green);
			g.drawRect(0, 0, 60, 60);
			g.drawRect(540, 0, 60, 60);
			g.drawRect(540, 540, 60, 60);
			g.drawRect(0, 540, 60, 60);
		}
 
		/** Board Squares */
		// White
		g.setColor(whiteTile);
		// Row 1
		g.fillRect(60, 60, 60, 60);
		g.fillRect(180, 60, 60, 60);
		g.fillRect(300, 60, 60, 60);
		g.fillRect(420, 60, 60, 60);
		// Row 2
		g.fillRect(120, 120, 60, 60);
		g.fillRect(240, 120, 60, 60);
		g.fillRect(360, 120, 60, 60);
		g.fillRect(480, 120, 60, 60);
		// Row 3
		g.fillRect(60, 180, 60, 60);
		g.fillRect(180, 180, 60, 60);
		g.fillRect(300, 180, 60, 60);
		g.fillRect(420, 180, 60, 60);
		// Row 4
		g.fillRect(120, 240, 60, 60);
		g.fillRect(240, 240, 60, 60);
		g.fillRect(360, 240, 60, 60);
		g.fillRect(480, 240, 60, 60);
		// Row 5
		g.fillRect(60, 300, 60, 60);
		g.fillRect(180, 300, 60, 60);
		g.fillRect(300, 300, 60, 60);
		g.fillRect(420, 300, 60, 60);
		// Row 6
		g.fillRect(120, 360, 60, 60);
		g.fillRect(240, 360, 60, 60);
		g.fillRect(360, 360, 60, 60);
		g.fillRect(480, 360, 60, 60);
		// Row 7
		g.fillRect(60, 420, 60, 60);
		g.fillRect(180, 420, 60, 60);
		g.fillRect(300, 420, 60, 60);
		g.fillRect(420, 420, 60, 60);
		// Row 8
		g.fillRect(120, 480, 60, 60);
		g.fillRect(240, 480, 60, 60);
		g.fillRect(360, 480, 60, 60);
		g.fillRect(480, 480, 60, 60);
 
		// Black
		g.setColor(blackTile);
		// Row 1
		g.fillRect(120, 60, 60, 60);
		g.fillRect(240, 60, 60, 60);
		g.fillRect(360, 60, 60, 60);
		g.fillRect(480, 60, 60, 60);
		// Row 2
		g.fillRect(60, 120, 60, 60);
		g.fillRect(180, 120, 60, 60);
		g.fillRect(300, 120, 60, 60);
		g.fillRect(420, 120, 60, 60);
		// Row 3
		g.fillRect(120, 180, 60, 60);
		g.fillRect(240, 180, 60, 60);
		g.fillRect(360, 180, 60, 60);
		g.fillRect(480, 180, 60, 60);
		// Row 4
		g.fillRect(60, 240, 60, 60);
		g.fillRect(180, 240, 60, 60);
		g.fillRect(300, 240, 60, 60);
		g.fillRect(420, 240, 60, 60);
		// Row 5
		g.fillRect(120, 300, 60, 60);
		g.fillRect(240, 300, 60, 60);
		g.fillRect(360, 300, 60, 60);
		g.fillRect(480, 300, 60, 60);
		// Row 6
		g.fillRect(60, 360, 60, 60);
		g.fillRect(180, 360, 60, 60);
		g.fillRect(300, 360, 60, 60);
		g.fillRect(420, 360, 60, 60);
		// Row 7
		g.fillRect(120, 420, 60, 60);
		g.fillRect(240, 420, 60, 60);
		g.fillRect(360, 420, 60, 60);
		g.fillRect(480, 420, 60, 60);
		// Row 8
		g.fillRect(60, 480, 60, 60);
		g.fillRect(180, 480, 60, 60);
		g.fillRect(300, 480, 60, 60);
		g.fillRect(420, 480, 60, 60);
 
		g.setColor(Color.black);
		for (int x = 0; x < 8; x++) {
			for (int y = 0; y < 8; y++) {
				g.drawRect(60 + (x * 60), 60 + (y * 60), 60, 60);
			}
		}
 
		/** Pieces */
		// White
		g.drawImage(SpriteLoader.rook, 60, 60, 60, 60, null);
		g.drawImage(SpriteLoader.rook, 480, 60, 60, 60, null);
		g.drawImage(SpriteLoader.horse, 120, 60, 60, 60, null);
		g.drawImage(SpriteLoader.horse, 420, 60, 60, 60, null);
		g.drawImage(SpriteLoader.bishop, 180, 60, 60, 60, null);
		g.drawImage(SpriteLoader.bishop, 360, 60, 60, 60, null);
		g.drawImage(SpriteLoader.king, 240, 60, 60, 60, null);
		g.drawImage(SpriteLoader.queen, 300, 60, 60, 60, null);
 
		// Black
		g.drawImage(SpriteLoader.rookBlack, 60, 480, 60, 60, null);
		g.drawImage(SpriteLoader.rookBlack, 480, 480, 60, 60, null);
		g.drawImage(SpriteLoader.horseBlack, 120, 480, 60, 60, null);
		g.drawImage(SpriteLoader.horseBlack, 420, 480, 60, 60, null);
		g.drawImage(SpriteLoader.bishopBlack, 180, 480, 60, 60, null);
		g.drawImage(SpriteLoader.bishopBlack, 360, 480, 60, 60, null);
		g.drawImage(SpriteLoader.kingBlack, 240, 480, 60, 60, null);
		g.drawImage(SpriteLoader.queenBlack, 300, 480, 60, 60, null);
 
		for (int x = 0; x < 8; x++) {
			g.drawImage(SpriteLoader.pawn, 60 + (x * 60), 120, 60, 60, null);
			g.drawImage(SpriteLoader.pawnBlack, 60 + (x * 60), 420, 60, 60, null);
		}
	}
}

SpriteLoader Class

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
 
import javax.imageio.ImageIO;
 
import com.teamfission.chess.References;
 
public class SpriteLoader {
 
	/** White Pieces */
	public static BufferedImage pawn;
	public static BufferedImage rook;
	public static BufferedImage horse;
	public static BufferedImage bishop;
	public static BufferedImage king;
	public static BufferedImage queen;
 
	/** Black Pieces */
	public static BufferedImage pawnBlack;
	public static BufferedImage rookBlack;
	public static BufferedImage horseBlack;
	public static BufferedImage bishopBlack;
	public static BufferedImage kingBlack;
	public static BufferedImage queenBlack;
 
	public static void loadImages() {
		References ref = new References();
		try {
			pawn = ImageIO.read(new File("res/Pawn.png"));
			rook = ImageIO.read(new File("res/Rook.png"));
			horse = ImageIO.read(new File("res/Horse.png"));
			bishop = ImageIO.read(new File("res/Bishop.png"));
			king = ImageIO.read(new File("res/King.png"));
			queen = ImageIO.read(new File("res/Queen.png"));
 
			pawnBlack = ImageIO.read(new File("res/PawnBlack.png"));
			rookBlack = ImageIO.read(new File("res/RookBlack.png"));
			horseBlack = ImageIO.read(new File("res/HorseBlack.png"));
			bishopBlack = ImageIO.read(new File("res/BishopBlack.png"));
			kingBlack = ImageIO.read(new File("res/KingBlack.png"));
			queenBlack = ImageIO.read(new File("res/QueenBlack.png"));
 
		} catch (IOException e) {
			System.out.println(ref.consolePrefix + "Sprite couldn't be loaded");
		}
 
	}
 
}

Yes, there are more efficient ways. Do you know arrays or any other collection that could be iterated?

Originally Posted by GregBrannon

Do you know arrays or any other collection that could be iterated?

I have a basic understanding of arrays, but I'm not sure how they could be iterated. Could you please explain how I would iterate it? Or what method is the best way?

Thanks,

Totara

Also, does anyone know how I can make the .png's move, and according to where you placed them, snap to the grid squares?