java - How to declare chess pieces in a chess game? -

im coding chess game actually. made chessboard cases , can coordinates.

my question : how can make (by example) pawn class attributes (color etc..) game.

thanks everyone!

my code :

    package coordboutons; import java.awt.color; import java.awt.container; import java.awt.dimension; import java.awt.eventqueue; import java.awt.gridlayout; import java.awt.event.actionevent; import java.awt.event.mouseadapter; import java.awt.event.mouseevent; import javax.swing.jframe; import javax.swing.jpanel;  public class coordboutons extends jframe {  coordboutons() {     super("gridlayout");     setdefaultcloseoperation(exit_on_close);     container contenant = getcontentpane();     contenant.setlayout(new gridlayout(8, 8));      (int = 0; < 8; i++) {         (int j = 0; j < 8; j++) {             contenant.add(new caseechiquier(i, j));         }     }      pack();     setvisible(true); }  class caseechiquier extends jpanel {      private int lin, col;     private char column;      caseechiquier(int i, int j) {         lin = i;         col = j;         setpreferredsize(new dimension(80, 75));         setbackground((i + j) % 2 == 0 ? color.white : color.gray);         addmouselistener(new mouseadapter() {               @override             public void mousepressed(mouseevent e){                 caseechiquier current =(caseechiquier)e.getsource(); // object user pressed                 int linx = current.getlin();                 int coly = current.getcol();                 system.out.println(lin+"   "+col);              }            });      }     public int getcol() {         return col;     }      public int getlin() {         return lin;     }  }  public static void main(string[] args) {     eventqueue.invokelater(new runnable() {         @override         public void run() {             jframe.setdefaultlookandfeeldecorated(true);             coordboutons coordboutons = new coordboutons();         }     }); } } 

probably way go first defining abstract piece class (which define functions getcolor(), getposition() , setposition(x,y), , require implementation of getmovementoptions, , on). can make 6 different classes extend piece: pawn, rook, knight, bishop, queen, , king. each of these can implement getmovementoptions appropriate.

the advantage of using base class can treat pieces same way when you're writing code play game: choose piece p, , move legal square defined call p.getmovementoptions() (or end defining method; needs access board position, instance).

public abstract class piece {     public color getcolor() {         return this.color;     }      public void setcolor(color c) {         this.color = c;     }      public square getposition() {         return this.position;     }      public void setposition(square p) {         this.position = p;     }      public list<square> getmovementoptions(board b); }  public class pawn extends piece {     public list<square> getmovementoptions(board b) {         // forward zero, one, or 2 squares, or capture diagonally 1 square ahead!         // list based on this.position , given board.     } }