本文实例讲述了JavaScript模拟深蓝vs卡斯帕罗夫的国际象棋对局示例。分享给大家供大家参考。具体如下：

/** * JavaScript macro to run a chess game, showing board, pieces and moves played. * * Author: Todd Whiteman * Revision: 1.0 * Date: October 2012 */ var board = " Garry Kasparov n 8║♜ ♞ ♝ ♛ ♚ ♝ ♞ ♜ Move: 0 n 7║♟ ♟ ♟ ♟ ♟ ♟ ♟ ♟ n 6║ n 5║ n 4║ n 3║ n 2║♙ ♙ ♙ ♙ ♙ ♙ ♙ ♙ n 1║♖ ♘ ♗ ♕ ♔ ♗ ♘ ♖ n ╚═══════════════ n a b c d e f g h n Deep Blue n "; var gameintro = [ "Site: Philadelphia, PA USA n Date: 1996.02.10 n Round: 1 n White: Deep Blue n Black: Kasparov, Garry n Result: 1-0 n Opening: Sicilian Defense 2.c3 n Annotator: Wheeler, David A. n ", "This game is world-famous, because it was the first game n won by a computer against a reigning world champion under n normal chess tournament conditions (in particular, normal time controls). n ", "Deep Blue was a computer developed by IBM to win against Kasparov. n Deep Blue won this game, but Kasparov rebounded over the following 5 n games to win 3 and draw 2, soundly beating Deep Blue in the 1996 match. n ", "In the 1997 rematch, Deep Blue managed to win the entire match. n Garry Kasparov is considered to be one of the greatest human chess players n of all time, so both this single game and the later win of a match showed n that computer-based chess had truly arrived at the pinnacle of chess play. n " ]; var movelist = " 1. e2e4 c7c5 n 2. c2c3 n {It's more common to play 2. Nf3, but Kasparov has deep experience with n that line, so white's opening book goes in a different direction.} n n 2.... d7d5 n 3. e4xd5 Qd8xd5 n 4. d2d4 Ng8f6 n 5. Ng1f3 Bc8g4 n 6. Bf1e2 e7e6 n 7. h2h3 Bg4h5 n 8. e1g1h1f1 Nb8c6 n 9. Bc1e3 c5xd4 n 10. c3xd4 Bf8b4 n {A more common move here is Be7. This was a new approach by Kasparov, n developing the bishop in an unusual way. Whether or not it's a good n approach is debated. After this move, the computer left its opening book n and began calculating its next move.} n n 11. a2a3 Bb4a5 n 12. Nb1c3 Qd5d6 n 13. Nc3b5 Qd6e7?! n {This allows white to make its pieces more active. n Other moves, which would probably be better, include Qb8 and Qd5.} n n 14. Nf3e5! Bh5xe2 n 15. Qd1xe2 e8g8h8f8 n 16. Ra1c1 Ra8c8 n 17. Be3g5 n {Black now has a problem, especially with the pinned knight on f6.} n n 17.... Ba5b6 n 18. Bg5xf6 g7xf6 n {Kasparov avoids ... Qxf6? because white would gain material with 19. Nd7. n Note that Kasparov's king is now far more exposed.} n n 19. Ne5c4! Rf8d8 n 20. Nc4xb6! a7xb6 n 21. Rf1d1 f6f5 n 22. Qe2e3! n {This is an excellent place for the white queen.} n n 22... Qe7f6 n 23. d4d5! n {Kasparov commented that he might have offered this pawn n sacrifice himself in this position, since it hurt black's pawn n structure, opened up the board, and black's exposed king suggested n that there was probably a way to exploit the result. n Kasparov has been attacking the d4 pawn, and the computer wisely n decided to advance it for an attack instead of trying to defend it.} n n 23... Rd8xd5 n 24. Rd1xd5 e6xd5 n 25. b2b3! Kg8h8? n {Kasparov attempts to prepare a counter-attack, by preparing to n move his rook to file g, but it won't work. n Burgess suggests that 25.... Ne7 Rxc8+ would have better, though n white would still have some advantage. n Indeed, after this point on it's difficult to identify n any move that will dramatically help black.} n n 26. Qe3xb6 Rc8g8 n 27. Qb6c5 d5d4 n 28. Nb5d6 f5f4 n 29. Nd6xb7 n {This is a very 'computerish'/materialistic move; white is grabbing n an undeveloped pawn for a small gain in material. n However, the computer has not identified any threat of checkmate or n other risks from black, so it simply acquires the material.} n n 29.... Nc6e5 n 30. Qc5d5 n {The move 30. Qxd4?? would be terrible, because Nf3+ n would win the white queen.} n n 30.... f4f3 n 31. g2g3 Ne5d3 n {The move 31... Qf4 won't work, because of 32. Rc8! Qg5 33. Rc5!} n n 32. Rc1c7 Rg8e8 n {Kasparov is attacking, but the computer has correctly determined that n the attack is not a real threat.} n n 33. Nb7d6 Re8e1+ n 34. Kg1h2 Nd3xf2 n 35. Nd6xf7+ Kh8g7 n 36. Nf7g5 Kg7h6 n 37. Rc7xh7+ n {Kasparov resigns - expecting ... Kg6 38. Qg8+ Kf5 Nxf3 and white's n strength is overwhelming. White will have lots of ways to defeat black, n while black has no real way to attack white.} n "; /****************************** * Komodo macro contents begin. ******************************/ var moveDisplayTime = 2000; // milliseconds var messageDisplayTime = 6000; // milliseconds // Indicator values, range from 8..30 - though Komodo uses a lot of these // numbers for special purposes. var indicWhiteSquare = 10; var indicBlackSquare = 11; var indicMoveFrom = 12; var indicMoveTo = 13; /** * Highlight the black/white chess squares. * * @param {Components.interfaces.ISciMoz} scimoz - The editor control. */ function HighlightSquares(scimoz) { for (var line=1; line < 9; line++) { for (var col=6; col < 21; col+=2) { var pos = scimoz.findColumn(line, col); var charlength = scimoz.positionAfter(pos) - pos; var isBlackSquare = (line % 2) == 0 ? (col % 4) == 0 : (col % 4) == 2; if (isBlackSquare) { scimoz.indicatorCurrent = indicBlackSquare; } else { scimoz.indicatorCurrent = indicWhiteSquare; } scimoz.indicatorFillRange(pos, charlength); } } } /** * Draw the starting board layout. * * @param {Components.interfaces.ISciMoz} scimoz - The editor control. */ function DrawInitialBoard(scimoz) { // Set board styling. scimoz.setMarginWidthN(0, 0); // Remove the line number margin. scimoz.caretStyle = scimoz.CARETSTYLE_INVISIBLE; // Hide the caret scimoz.indicSetStyle(indicWhiteSquare, scimoz.INDIC_STRAIGHTBOX); // See Scintilla docs for others scimoz.indicSetAlpha(indicWhiteSquare, 40); scimoz.indicSetOutlineAlpha(indicWhiteSquare, 30); scimoz.indicSetFore(indicWhiteSquare, 0xFFFFFF); // Colour is BGR format!! scimoz.indicSetStyle(indicBlackSquare, scimoz.INDIC_STRAIGHTBOX); // See Scintilla docs for others scimoz.indicSetAlpha(indicBlackSquare, 40); scimoz.indicSetOutlineAlpha(indicBlackSquare, 30); scimoz.indicSetFore(indicBlackSquare, 0x000000); // Colour black - it's BGR format!! scimoz.indicSetStyle(indicMoveFrom, scimoz.INDIC_ROUNDBOX); // See Scintilla docs for others scimoz.indicSetAlpha(indicMoveFrom, 40); scimoz.indicSetOutlineAlpha(indicMoveFrom, 90); scimoz.indicSetFore(indicMoveFrom, 0x00EEEE); // Colour is BGR format!! scimoz.indicSetStyle(indicMoveTo, scimoz.INDIC_ROUNDBOX); // See Scintilla docs for others scimoz.indicSetAlpha(indicMoveTo, 40); scimoz.indicSetOutlineAlpha(indicMoveTo, 90); scimoz.indicSetFore(indicMoveTo, 0x00EEEE); // Colour is BGR format!! // Add the board text. scimoz.addText(ko.stringutils.bytelength(board), board); // Make it a large board - valid range is +-20. scimoz.zoom = 15; // Highlight the black/white squares. HighlightSquares(scimoz); } /** * Display the given message beside the board. Clears any previous message. * * @param {Components.interfaces.ISciMoz} scimoz - The editor control. * @param {String} message - The message to display. */ function DisplayMessage(scimoz, message, nosplit) { try { // Clear existing message lines. for (var line=1; line < scimoz.lineCount; line++) { var pos = scimoz.findColumn(line, 26); var eolpos = scimoz.getLineEndPosition(line); if (eolpos > pos) { scimoz.targetStart = pos; scimoz.targetEnd = eolpos; scimoz.replaceTarget(0, ""); } } // Format the message. var textUtils = Components.classes["@activestate.com/koTextUtils;1"] .getService(Components.interfaces.koITextUtils); var lines = message.split("n"); for (var i=0; i < lines.length; i++) { lines[i] = ko.stringutils.strip(lines[i]); } if (!nosplit) { message = lines.join(" "); message = textUtils.break_up_lines(message, 26); lines = message.split("n"); } // Display new message - limit lines to for (var i=0; i < lines.length; i++) { var line = lines[i]; if (i+1 >= scimoz.lineCount) { scimoz.currentPos = scimoz.length; scimoz.newLine(); } var pos = scimoz.findColumn(i+1, 26); var lineStart = scimoz.positionFromLine(i+1); var lineDiff = pos - lineStart; while (lineDiff < 26) { // Add space padding to the start of the line. line = " " + line; lineDiff += 1; } scimoz.currentPos = pos; scimoz.addText(ko.stringutils.bytelength(line), line); } } catch(ex) { // Exception handling - show problems to the user. alert("Error: " + ex + "nn" + ex.stack.toString()); } } /** * Play the introduction strings. * * @param {Components.interfaces.ISciMoz} scimoz - The editor control. */ function PlayIntro(scimoz, callback) { for (var i=0; i < gameintro.length; i++) { setTimeout(DisplayMessage, messageDisplayTime * i, scimoz, gameintro[i], i == 0); } setTimeout(callback, (messageDisplayTime * gameintro.length), scimoz); } /** * Highlight the chess move. * * @param {Components.interfaces.ISciMoz} scimoz - The editor control. * @param {Integer} indicator - The indicator to use for highlighting. * @param {Integer} pos - The position to highlight. */ function HighlightMove(scimoz, indicator, pos) { scimoz.indicatorCurrent = indicator; scimoz.indicatorClearRange(0, scimoz.length); var charlength = scimoz.positionAfter(pos) - pos; scimoz.indicatorFillRange(pos, charlength); } /** * Determine the position in the document for the co-ordinates. * * @param {Components.interfaces.ISciMoz} scimoz - The editor control. * @param {String} move - The coded chess move to make. */ function GetBoardPosition(scimoz, chesscode) { var col = chesscode.charCodeAt(0) - 'a'.charCodeAt(0); var row = '8'.charCodeAt(0) - chesscode.charCodeAt(1); return scimoz.findColumn(row+1, (col*2)+6); } /** * Make the given chess move. * * @param {Components.interfaces.ISciMoz} scimoz - The editor control. * @param {String} move - The coded chess move to make. */ function MakeMove(scimoz, move) { var isTake = (move.indexOf("x") >= 0); move = move.replace("x", ""); if (move.length == 8) { // Special double move for castling. MakeMove(scimoz, move.substr(4)); move = move.substr(0, 4); } if (move.length >= 5) { move = move.substr(1); } var fromPos = GetBoardPosition(scimoz, move.substr(0, 2)); scimoz.targetStart = fromPos; scimoz.targetEnd = scimoz.positionAfter(fromPos); piece = scimoz.getTextRange(fromPos, scimoz.targetEnd); scimoz.replaceTarget(" ".length, " "); HighlightMove(scimoz, indicMoveFrom, fromPos); var toPos = GetBoardPosition(scimoz, move.substr(2)); scimoz.targetStart = toPos; scimoz.targetEnd = scimoz.positionAfter(toPos); scimoz.replaceTarget(piece.length, piece); HighlightSquares(scimoz); HighlightMove(scimoz, indicMoveTo, toPos); // Clear old messages. DisplayMessage(scimoz, "", false); } /** * Make the given chess move. * * @param {Components.interfaces.ISciMoz} scimoz - The editor control. * @param {String} move - The coded chess move to make. */ function ProcessMove(scimoz, move) { move = move.replace("!", ""); move = move.replace(""); move = move.replace("+", ""); var match = move.match(/(d+).s*([w.]+)s*(w+)?/); if (!match.length) { dump("Unrecognized move: " + move + "n"); } var moveWhite = match[2]; var moveBlack = match[3]; if (moveWhite[0] != ".") { MakeMove(scimoz, moveWhite); } else { MakeMove(scimoz, moveBlack); return; } setTimeout(MakeMove, moveDisplayTime, scimoz, moveBlack); } /** * Play all of the chess moves and display the move commentary. * * @param {Components.interfaces.ISciMoz} scimoz - The editor control. */ function PlayMoves(scimoz) { var moves = movelist.split("n"); var state = "move"; var message = ""; var nexttimeout = 0; for (var i=0; i < moves.length; i++) { var move = ko.stringutils.strip(moves[i]); if (!move) { continue; } switch (state) { case "move": if (move.match(/^[0-9]+./)) { // Piece to move. setTimeout(ProcessMove, nexttimeout, scimoz, move); nexttimeout += moveDisplayTime; nexttimeout += moveDisplayTime; break; } else if (move[0] == "{") { state = "message"; message = ""; move = move.substr(1); // Fallthrough. } else { continue; } case "message": if (move.indexOf("}") >= 0) { move = move.substring(0, move.indexOf("}")); state = "move"; } if (message) message += " "; message += move; if (state == "move") { setTimeout(DisplayMessage, nexttimeout, scimoz, message, false); message = ""; nexttimeout += messageDisplayTime; } break; } } } /** * Play the chess game in the given editor. * * @param {Components.interfaces.koIScintillaView} view - The editor view. */ function PlayChess(view) { try { /** * @type {Components.interfaces.ISciMoz} - The editor control. */ var scimoz = view.scimoz; DrawInitialBoard(scimoz); PlayIntro(scimoz, PlayMoves); } catch(ex) { // Exception handling - show problems to the user. alert("Error: " + ex + "nn" + ex.stack.toString()); } } // Create a new text file asynchronously and start playing chess. ko.views.manager.doNewViewAsync("Text", "editor", PlayChess);

希望本文所述对大家的javascript程序设计有所帮助。