; *** Chess
; *** Copyright 1998-2002 Zillions Development
; v.2.0

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

(version "2.0")

(define leap1        ($1    (verify not-friend?) add) )
(define leap2        ($1 $2 (verify not-friend?) add) )
(define king-shift   ($1    (verify not-friend?) (set-attribute never-moved? false) add) )

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

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


(define leap-slide (	
(verify threeD_allow?)
$1 $1 
(while empty? add $1 $1) 
(verify not-friend?)
add
))



(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
     )
)
(define Pawn-add
   (if (in-zone? promotion-zone) (add Knight Bishop Rook Queen) else add)
)
(define Pawn-move
   (
      n
      (verify empty?)
      (Pawn-add)
      (verify (in-zone? third-rank))
      n
      (verify empty?)
      add
   )
)
(define Pawn-side-move
   (
      $1
      (verify (in-zone? third-rank))
      $1
      (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
   )
)

(define Board-Definitions
  (image "images\Chess\SHaag\Chess8x8.bmp" "images\Chess\Chess8x8.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 first-rank)
     (players White)
     (positions a1 b1 c1 d1 e1 f1 g1 h1)
  )
  (zone
     (name first-rank)
     (players Black)
     (positions a8 b8 c8 d8 e8 f8 g8 h8)
  )

)

(game
   (title "Chess")
   (description "Object: Checkmate the opponent's King by attacking it so it cannot escape. \\Extra moves come from the 3rd Dimension, available from the second normal move (pawns only can access to 3D extra's at first move). \\To see a description of how a piece moves, right-click on it to bring up its properties dialog.")
   (history "3to2 Chess Game comes from Mapped Chess on two boards, a more balanced game. Mapped Chess is itself a 2D projection the 3D Cross3D game, giving a flavour of the third dimension in a playable way")
   (strategy "to be discovered ! In this game, if a Pawn has value 1, Rook has 6, Bishop and Knight about 5, and Queen 11")
   (option "prevent flipping" 2)
   (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)
   (board (Board-Definitions))

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

   (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 (in this game orthogonally or diagonally).  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\Chess\SHaag\wpawn.bmp" "images\Chess\wpawn.bmp"
             Black "images\Chess\SHaag\bpawn.bmp" "images\Chess\bpawn.bmp")
      (moves
         (Pawn-capture nw)
         (Pawn-capture ne)
         (Pawn-move)
	   (Pawn-side-move ne)
	   (Pawn-side-move nw)
         (En-Passant e)
         (En-Passant w)
      )
   )

   (piece
      (name Knight)
	  (help "Knight: moves like an `L`, 2 squares one way and one the other, extra one step moves in every direction in this game")
      (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. It has extra one step moves in every direction in this game")
      (image White "images\Chess\SHaag\wknight.bmp" "images\Chess\wknight.bmp"
             Black "images\Chess\SHaag\bknight.bmp" "images\Chess\bknight.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)
	     (leap1 n)
	     (leap1 s)
	     (leap1 e)
	     (leap1 w)



      )
   )

   (piece
      (name Bishop)
	  (help "Bishop: slides diagonally any number of squares - extra Rook-like moves every two steps in this game, allowed after a first normal move")
      (description "Bishop\A Bishop moves any number of squares on a diagonal.  It may
           not leap over other pieces, exept for extra Rook-like moves every two steps in this game, allowed after a first normal move")
      (image White "images\Chess\SHaag\wbishop.bmp" "images\Chess\wbishop.bmp"
             Black "images\Chess\SHaag\bbishop.bmp" "images\Chess\bbishop.bmp")
(attribute never-moved? true)
(attribute threeD_allow? false)	
      (moves
         (slide ne)
         (slide nw)
         (slide se)
         (slide sw)
	   (leap-slide n)
	   (leap-slide e)
	   (leap-slide w)
	   (leap-slide s)
      )
   )

   (piece
      (name Rook)
	  (help "Rook: slides any number of squares along the row or column - extra Bishop-like moves every two steps in this game, allowed after a first normal move")
      (description "Rook\A Rook moves any number of squares orthogonally on a rank
           or a file.  It may not leap over other pieces, exept for extra Bishop-like moves every two steps in this game, allowed after a first normal move")
      (image White "images\Chess\SHaag\wrook.bmp" "images\Chess\wrook.bmp"
             Black "images\Chess\SHaag\brook.bmp" "images\Chess\brook.bmp")
      (attribute never-moved? true)
	(attribute threeD_allow? false)	
      (moves
         (rook-slide n)
         (rook-slide e)
         (rook-slide s)
         (rook-slide w)
	   (leap-slide ne)
	   (leap-slide se)
	   (leap-slide nw)
	   (leap-slide sw)
      )
   )

   (piece
      (name Queen)
	  (help "Queen: can slide any number of squares in any direction, and benefits from extra jumps orthogonaly and diagonally in this game, allowed after a first normal move")
      (description "Queen\A Queen moves any number of squares in a straight line.
          It may not leap over other pieces, exept for the extra moves comming from third dimension, allowed after a first normal move")
      (image White "images\Chess\SHaag\wqueen.bmp" "images\Chess\wqueen.bmp"
             Black "images\Chess\SHaag\bqueen.bmp" "images\Chess\bqueen.bmp")
(attribute threeD_allow? false)	
      (moves
         (slide n)
         (slide e)
         (slide s)
         (slide w)
         (slide ne)
         (slide nw)
         (slide se)
         (slide sw)
	   (leap-slide n)
	   (leap-slide e)
	   (leap-slide w)
	   (leap-slide s)
	   (leap-slide ne)
	   (leap-slide nw)
	   (leap-slide se)
	   (leap-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\Chess\SHaag\wking.bmp" "images\Chess\wking.bmp"
             Black "images\Chess\SHaag\bking.bmp" "images\Chess\bking.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)
      )
   )

   (loss-condition (White Black) (checkmated King) )
)