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chess problem

omarB
hi all , i am writing a chess game
where can i perform if the test is legal or not ?
and should i take all the possibilities or is there might be
a better way to do that ?

Jessica Bradley
as was suggested in your previous post... one idea is to create an interface for the chess piece:
code:

interface ChessPiece{
  /**
   * Returns the type of piece this is: King, Queen, Pawn, etc
   */
  public String getPieceType();
 
  /**
   * Returns true if the given move is allowed for this chess piece
   */
  public boolean isMoveLegal( int x, int y );
 
  /**
   * Performs the given move, returns true if successful.
   * @exception IllegalMoveException
   */
  public boolean move( int x, int y ) throws IllegalMoveException;

Then you can implement this class for each type of chess piece. You'll have to come up with a scheme to determine if a given move is allowed.

For example... for a knight they can move (ummm I forget) 1 forward and 3 to the side?? so given the current position, is (x,y) the position that is 1 space forward and 3 to the side? Also is (x,y) even on the board? Is another piece occupying that space?

Maybe your Board class will have methods like
code:

/**
 * Checks to see if the given space is occupied
 */
public boolean isSpaceOccupied( int x, int y)
/**
 * Checks to see if there is a clear path between the start and end coordinates
 */
public boolean isPathClear( int startX, int startY, int endX, int endY )


Does that make sense? Try thinking along those lines and see what you come up with.