;**********************************************************************
;***                        Teutonic-chess                                  ***
;***                            V2.0                                             ***
;***                      kushal sahare 2010                              ***
;***                      India                                                   *** 
;***                                                                                *** 
;    
;**********************************************************************

; You need to purchase Zillions of Games to load this rules file
; Visit the Zillions web site at http://www.zillions-of-games.com

;------------ flag whose turn it is -----------------------------
(define am-White? (in-zone? promotion-zone a8))

;============================ general moves ==========================================
(define leap2        ($1 $2 (verify not-friend?) add) ) ;knight move and Teutonic Knight move
(define king-shift   ($1    (verify not-friend?) (set-attribute never-moved? false) add) )

(define slide        ($1 (while empty? add $1) (verify not-friend?) add))
(define rook-slide (   $1   (while empty? (set-attribute never-moved? false) add $1)
  (verify not-friend?)   (set-attribute never-moved? false)
  add
)
)

;============================ castling ==========================================
(define O-O
	 ( (verify never-moved?)
	   e ; KB1
	   (verify empty?)
	   e ; KN1
	   (verify empty?)
	   cascade
	   e ; KR1
	   (verify (and friend? (piece? Rook) never-moved?) )
	   from
	   back ; K1
		 ; Save expensive not-attacked?s for last
	   (verify not-attacked?)
	   e ; KB1
	   (verify not-attacked?)
	   to
	   (set-attribute never-moved? false)
		 ; We could check if KN1 is attacked too, but this isn't
		 ; really necessary since Zillions doesn't allow any moves
		 ; into check
	   e ; KN1
	   (set-attribute never-moved? false)
	   add
	 )
)

(define O-O-O
     ( (verify never-moved?)
       w ; Q1
       (verify empty?)
       w ; QB1
       (verify empty?)
       cascade
       w ; QN1
       (verify empty?)
       w ; QR1
       (verify (and friend? (piece? Rook) never-moved?) )
       from
       back ; K1
         ; Save expensive not-attacked?s for last
       (verify not-attacked?)
       w ; Q1
       (verify not-attacked?)
       to
       (set-attribute never-moved? false)
         ; We could check if KN1 is attacked too, but this isn't
         ; really necessary since Zillions doesn't allow any moves
         ; into check
       w ; QB1
       (set-attribute never-moved? false)
       add
     )
)

;============================ Pawn moves ==========================================
(define Pawn-add
   (if (in-zone? promotion-zone) (add Knight Bishop Rook Teutonic Knight Queen ) else add)
)
(define Pawn-move
   (
      n
      (verify empty?)
      (Pawn-add)
      (verify (in-zone? third-rank))
      n
      (verify empty?)
      add
   )
)
(define Pawn-capture
   (
      $1
      (verify enemy?)
      (Pawn-add)
   )
)
(define En-Passant
   (
      $1
      (verify enemy?)
      (verify last-to?)
      (verify (piece? Pawn))
      capture
      n
      to
      n
      (verify last-from?)
      add
   )
)

;================================ pieces ===========================
(define Pdef

   (piece  (name Pawn)
	  (help "Pawn: moves forward, captures diagonally, can promote on 8th row")
      (description "Pawn\A Pawn can move straight ahead one square, or two squares from
           its starting position.  A Pawn captures by moving one square ahead and
           diagonally.  If a Pawn reaches the far rank it promotes, changing into
           a Knight, Bishop, Rook, or Queen.  On rare occasions Pawns can also execute
           a move called `En Passant`, or `in passing`.  This allows a Pawn to take
           an enemy Pawn that has just moved two squares.")
      (image White "images\WP.bmp" Black "images\BP.bmp")
      (moves
         (Pawn-capture nw)
		 (Pawn-capture ne)
		 (Pawn-move)
		 (En-Passant e)
		 (En-Passant w)
      )
   )

   (piece
      (name Knight)
	  (help "Knight: moves like an `L`, 2 squares one way and one the other")
      (description "Knight\A Knight moves like an `L`, two squares vertically plus one
          horizontally, or two squares horizontally plus one vertically.  It
          hops over any pieces on the way.")
      (image White "images\WN.bmp" Black "images\BN.bmp")
      (moves
	     (leap2 n ne)
		 (leap2 n nw)
		 (leap2 s se)
		 (leap2 s sw)
	     (leap2 e ne)
		 (leap2 e se)
		 (leap2 w nw)
		 (leap2 w sw)
      )
   )


  (piece (name Bishop)
	  (help "Bishop: slides diagonally any number of squares")
      (description "Bishop\A Bishop moves any number of squares on a diagonal.  It may
           not leap over other pieces.")
      (image White "images\WB.bmp" Black "images\BB.bmp")
      (moves
         (slide ne)
		 (slide nw)
		 (slide se)
		 (slide sw)
      )
   )

   (piece (name Rook)
	  (help "Rook: slides any number of squares along the row or column.")
      (description "Rook\A Rook moves any number of squares orthogonally on a rank
           or a file.  It may not leap over other pieces.")
      (image White "images\WR.bmp" Black "images\BR.bmp")
      (attribute never-moved? true)
      (moves
         (rook-slide n)
		 (rook-slide e)
		 (rook-slide s)
		 (rook-slide w)
      )
   )

   (piece (name Queen)
	  (help "Queen: can slide any number of squares in any direction")
      (description "Queen\A Queen moves any number of squares in a straight line.
          It may not leap over other pieces.")
      (image White "images\WQ.bmp" Black "images\BQ.bmp")
      (moves
         (slide n)
		 (slide e)
		 (slide s)
		 (slide w)
		 (slide ne)
		 (slide nw)
		 (slide se)
		 (slide sw)
      )
   )

   (piece (name King)
	  (help "King: steps 1 square in any direction to a safe square")
      (description "King\A King can move to any adjacent square, but never to a 
	      square where it can be captured.  It may also `castle`
          with the Rook if neither the Rook nor King has moved yet and there is
          nothing in between them.  In castling the King moves two squares nearer
          the Rook and the Rook leaps to the far side of the King.  You may not
          castle out of or through check, or if the King or Rook involved has 
		  previously moved.")
      (image White "images\WK.bmp" Black "images\BK.bmp")
      (attribute never-moved? true)
      (moves
         (king-shift n)(king-shift e)(king-shift s)(king-shift w)
         (king-shift ne)(king-shift nw)(king-shift se)(king-shift sw)
         (O-O)
         (O-O-O)
      )
   )
   
   ( piece (name Teutonic Knight)
      (help "Teutonic Knight: jumps 2 square in any direction")
	  (description "Teutonic Knight\A Teutonic Knight moves any number of squares in a straight line.
          It may not leap over other pieces.")
	(image White "images\WTN.bmp" Black "images\BTN.bmp")
		  
	  (moves
		 (leap2 n n)
         (leap2 s s)
         (leap2 e e)
         (leap2 w w)
         (leap2 ne ne)
         (leap2 nw nw)
         (leap2 se se)
         (leap2 sw sw)
		 )
		 

   
   
)


;============================ board ==========================================
(define Bdef
 (board 
  (image "images\Board.bmp")
  (grid
     (start-rectangle);5 5 53 53)
     (dimensions
                 ("a/b/c/d/e/f/g/h" (49 0)) ; files
                 ("8/7/6/5/4/3/2/1" (0 49)) ; ranks
             )
     (directions (n 0 -1) (e 1 0) (s 0 1) (w -1 0)
			     (ne 1 -1) (nw -1 -1) (se 1 1) (sw -1 1)
     )
  )
  (symmetry Black (n s)(s n) (nw sw)(sw nw) (ne se)(se ne))
  (zone
     (name promotion-zone)
     (players White)
     (positions a8 b8 c8 d8 e8 f8 g8 h8)
  )
  (zone
     (name promotion-zone)
     (players Black)
     (positions a1 b1 c1 d1 e1 f1 g1 h1)
  )
  (zone (name third-rank)(players White)(positions a3 b3 c3 d3 e3 f3 g3 h3))
  (zone (name third-rank)(players Black)(positions a6 b6 c6 d6 e6 f6 g6 h6))
  ;(zone (name vzone)(players White Black)(positions $1)) ;variants
 )
)

)
;==================================== game ============================================
(game
   (title "Teutonic Chess")
   (description "This game makes Teutonic Chess  available for playing .
     ;(win-sound "Audio\Orchestra_CF.wav")
      (loss-sound "Audio\Orchestra_FC.wav")
      (click-sound "Audio\Pickup.wav")
      (release-sound "Audio\WoodThunk.wav")
      (players White Black)
      (turn-order White Black)
      (pass-turn false)
   
   ;                     start rectangle and square size of board positions:
   (Bdef1 Chess Chess8x8 5 5 53 53   49)
   (Pdef Teutonic Chess Standard WK WQ WR WB WK WP WTN
         Teutonic Chess Standard BK BQ BR BB BK BP BTN)

   (board-setup
      (White
         (Pawn a2 b2 d2 e2 g2 h2)
         (Knight b1 g1)(Bishop c1 f1)(Rook a1 h1)(Queen d1)(King e1)(Teutonic Knight c2 f2)
      (Black
         (Pawn a7 b7 c7 d7 e7 f7 g7 h7)
         (Knight b8 g8)(Bishop c8 f8)(Rook a8 h8)(Queen d8)(King e8 Teutonic Knight c7 f7))
   )
   (loss-condition (White Black) (checkmated King) )
   (draw-condition (White Black) (stalemated King) )
   (draw-condition (White Black)  repetition       )
   
)









