Pure JS implements backgammon game compatible with all browsers (source code attached)

Pure JS backgammon (compatible with all browsers)
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Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
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五子棋

<script> $(document).ready(function() { fiveChess.init(); }); var fiveChess = { NO_CHESS: 0, BLACK_CHESS: -1, WHITE_CHESS: 1, chessArr: [], //Record chess pieces chessBoardHtml: "" , humanPlayer: "black",//Player chess color AIPlayer: "white",//AI chess color isPlayerTurn: true, //It's the player's turn to play chess totalGames: cookieHandle. getCookie("totalGames") || 0,//Total number of games winGames: cookieHandle.getCookie("winGames") || 0,//Number of games won by the player isGameStart: false,//The game has started isGameOver: false, //The game is over playerLastChess: [], //The player’s last move AILastChess: [], //The AI’s last move init: function () { this.chessBoardHtml = $("div.chessboard").html(); var _fiveChess = this; //Right operating button $(".operating-panel a").click( function (event) { event.preventDefault(); var id = $(this).attr("id"); if (_fiveChess.isGameStart && id !== "replay_btn" ) { return; }//In game and not operating switch (id) { case "black_btn": _fiveChess.humanPlayer = "black"; _fiveChess.AIPlayer = "white"; break; case "white_btn": _fiveChess.humanPlayer = "white"; _fiveChess.AIPlayer = "black"; break; case "first_move_btn": _fiveChess. isPlayerTurn = true; break; case "second_move_btn": _fiveChess.isPlayerTurn = false; >if (_fiveChess.isGameStart) {//Click to replay _fiveChess.gameOver(); } else { //Click to start _fiveChess.gameStart(); } break; } if (id !== "replay_btn") { $(this).addClass("selected").siblings().removeClass("selected"); } }); this.resetChessBoard(); $("#result_info").html("Win rate:" (this.winGames * 100 / this.totalGames | 0) "%") ; }, //Reset the chessboard resetChessBoard: function () { $("div.chessboard").html(this.chessBoardHtml); $("#result_tips ").html(""); this.isGameOver = false; this.isPlayerTurn = $("#first_move_btn").hasClass("selected"); //Initialize the chess piece state var i, j; for (i = 0; i < 15; i ) { this.chessArr[i] = []; for (j = 0; j < 15; j ) { this.chessArr[i][j] = this.NO_CHESS; } } //player chess event var _fiveChess = this; $( "div.chessboard div").click(function () { if (!_fiveChess.isPlayerTurn || _fiveChess.isGameOver) { return; } if (!_fiveChess.isGameStart) { _fiveChess.gameStart(); } var index = $(this).index(), i = index / 15 | 0, j = index % 15; if (_fiveChess.chessArr[i][j] === _fiveChess.NO_CHESS) { _fiveChess.playChess(i, j, _fiveChess.humanPlayer); if (i === 0 && j == = 0) { $(this).removeClass("hover-up-left"); } else if (i === 0 && j === 14) { $ (this).removeClass("hover-up-right"); } else if (i === 14 && j === 0) { $(this).removeClass("hover -down-left"); } else if (i === 14 && j === 14) { $(this).removeClass("hover-down-right"); } else if (i === 0) { $(this).removeClass("hover-up"); } else if (i === 14) { $(this).removeClass("hover-down"); } else if (j === 0) { $(this).removeClass("hover-left") ; } else if (j === 14) { $(this).removeClass("hover-right"); } else { $(this ).removeClass("hover"); } _fiveChess.playerLastChess = [i, j]; _fiveChess.playerWinOrNot(i, j); } }); //The effect of mouse movement on the chessboard $("div.chessboard div").hover( function () { if (!_fiveChess.isPlayerTurn || _fiveChess.isGameOver) { return; } var index = $(this).index(), i = index / 15 | 0, j = index % 15; if (_fiveChess.chessArr[i][j] = == _fiveChess.NO_CHESS) { if (i === 0 && j === 0) { $(this).addClass("hover-up-left"); } else if (i === 0 && j === 14) { $(this).addClass("hover-up-right"); } else if (i === 14 && j === 0) { $(this).addClass("hover-down-left"); } else if (i === 14 && j === 14) { $(this).addClass("hover-down-right"); } else if (i === 0) { $(this).addClass("hover- up"); } else if (i === 14) { $(this).addClass("hover-down"); } else if (j = == 0) { $(this).addClass("hover-left"); } else if (j === 14) { $(this).addClass(" hover-right"); } else { $(this).addClass("hover"); } } }, function () { if (!_fiveChess.isPlayerTurn || _fiveChess.isGameOver) { return; } var index = $(this).index(), i = index / 15 | 0, j = index % 15; if (i === 0 && j === 0) { $(this).removeClass("hover-up-left"); } else if (i === 0 && j === 14) { $(this).removeClass("hover-up-right"); } else if (i === 14 && j === 0) { $(this).removeClass("hover-down-left"); } else if (i === 14 && j === 14) { $(this).removeClass("hover-down-right"); } else if (i === 0) { $(this).removeClass("hover-up") ; } else if (i === 14) { $(this).removeClass("hover-down"); } else if (j === 0) { $(this).removeClass("hover-left"); } else if (j === 14) { $(this).removeClass("hover-right"); } else { $(this).removeClass("hover"); } } ); }, gameStart: function () { this.totalGames ; cookieHandle.setCookie({ name: "totalGames", value: this.totalGames, expiresHours: 365 * 24 }); //AI先手 if (!this.isPlayerTurn) { this.AImoveChess(); } this.isGameStart = true; $(".operating-panel p a").addClass("disable"); $("#replay_btn").html("重玩"); }, gameOver: function () { this.isGameStart = false; $(".operating-panel a").removeClass("disable"); $("#replay_btn").html("开始"); $("#result_info").html("胜率：" (this.winGames * 100 / this.totalGames | 0) "%"); }, //下棋 i行，j列，color颜色 playChess: function (i, j, color) { this.chessArr[i][j] = color === "black" ? this.BLACK_CHESS : this.WHITE_CHESS; if (color === this.AIPlayer) { $("div.chessboard div." color "-last").addClass(color).removeClass(color "-last"); $("div.chessboard div:eq(" (i * 15 j) ")").addClass(color "-last"); } else { $("div.chessboard div:eq(" (i * 15 j) ")").addClass(color); } }, //玩家是否取胜 playerWinOrNot: function (i, j) { var nums = 1, //连续棋子个数 chessColor = this.humanPlayer === "black" ? this.BLACK_CHESS : this.WHITE_CHESS, m, n; //x方向 for (m = j - 1; m >= 0; m--) { if (this.chessArr[i][m] === chessColor) { nums ; } else { break; } } for (m = j 1; m < 15; m ) { if (this.chessArr[i][m] === chessColor) { nums ; } else { break; } } if (nums >= 5) { this.playerWin(); return; } else { nums = 1; } //y方向 for (m = i - 1; m >= 0; m--) { if (this.chessArr[m][j] === chessColor) { nums ; } else { break; } } for (m = i 1; m < 15; m ) { if (this.chessArr[m][j] === chessColor) { nums ; } else { break; } } if (nums >= 5) { this.playerWin(); return; } else { nums = 1; } //左斜方向 for (m = i - 1, n = j - 1; m >= 0 && n >= 0; m--, n--) { if (this.chessArr[m][n] === chessColor) { nums ; } else { break; } } for (m = i 1, n = j 1; m < 15 && n < 15; m , n ) { if (this.chessArr[m][n] === chessColor) { nums ; } else { break; } } if (nums >= 5) { this.playerWin(); return; } else { nums = 1; } //右斜方向 for (m = i - 1, n = j 1; m >= 0 && n < 15; m--, n ) { if (this.chessArr[m][n] === chessColor) { nums ; } else { break; } } for (m = i 1, n = j - 1; m < 15 && n >= 0; m , n--) { if (this.chessArr[m][n] === chessColor) { nums ; } else { break; } } if (nums >= 5) { this.playerWin(); return; } this.AImoveChess(); }, playerWin: function () { this.winGames ; cookieHandle.setCookie({ name: "winGames", value: this.winGames, expiresHours: 365 * 24 }); this.showResult(true); this.gameOver(); }, //AI下棋 AImoveChess: function () { this.isPlayerTurn = false; var maxX = 0, maxY = 0, maxWeight = 0, i, j, tem; for (i = 14; i >= 0; i--) { for (j = 14; j >= 0; j--) { if (this.chessArr[i][j] !== this.NO_CHESS) { continue; } tem = this.computeWeight(i, j); if (tem > maxWeight) { maxWeight = tem; maxX = i; maxY = j; } } } this.playChess(maxX, maxY, this.AIPlayer); this.AILastChess = [maxX, maxY]; if ((maxWeight >= 100000 && maxWeight < 250000) || (maxWeight >= 500000)) { this.showResult(false); this.gameOver(); } else { this.isPlayerTurn = true; } }, showResult: function(isPlayerWin) { if (isPlayerWin) { $("#result_tips").html("恭喜你获胜！"); } else { $("#result_tips").html("哈哈，你输咯！"); } this.isGameOver = true; this.showWinChesses(isPlayerWin); }, //标记显示获胜棋子 showWinChesses: function (isPlayerWin) { var nums = 1, //连续棋子个数 lineChess = [],//连续棋子位置 i, j, chessColor, m, n; if (isPlayerWin) { chessColor = this.humanPlayer === "black" ? this.BLACK_CHESS : this.WHITE_CHESS; i = this.playerLastChess[0]; j = this.playerLastChess[1]; } else { chessColor = this.AIPlayer === "black" ? this.BLACK_CHESS : this.WHITE_CHESS; i = this.AILastChess[0]; j = this.AILastChess[1]; } $("div.chessboard div." this.AIPlayer "-last").addClass(this.AIPlayer).removeClass(this.AIPlayer "-last"); //x方向 lineChess[0] = [i]; lineChess[1] = [j]; for (m = j - 1; m >= 0; m--) { if (this.chessArr[i][m] === chessColor) { lineChess[0][nums] = i; lineChess[1][nums] = m; nums ; } else { break; } } for (m = j 1; m < 15; m ) { if (this.chessArr[i][m] === chessColor) { lineChess[0][nums] = i; lineChess[1][nums] = m; nums ; } else { break; } } if (nums >= 5) { for (k = nums - 1; k >= 0; k--) { this.markChess(lineChess[0][k] * 15 lineChess[1][k], isPlayerWin ? this.humanPlayer : this.AIPlayer); } return; } //y方向 nums = 1; lineChess[0] = [i]; lineChess[1] = [j]; for (m = i - 1; m >= 0; m--) { if (this.chessArr[m][j] === chessColor) { lineChess[0][nums] = m; lineChess[1][nums] = j; nums ; } else { break; } } for (m = i 1; m < 15; m ) { if (this.chessArr[m][j] === chessColor) { lineChess[0][nums] = m; lineChess[1][nums] = j; nums ; } else { break; } } if (nums >= 5) { for (k = nums - 1; k >= 0; k--) { this.markChess(lineChess[0][k] * 15 lineChess[1][k], isPlayerWin ? this.humanPlayer : this.AIPlayer); } return; } //左斜方向 nums = 1; lineChess[0] = [i]; lineChess[1] = [j]; for (m = i - 1, n = j - 1; m >= 0 && n >= 0; m--, n--) { if (this.chessArr[m][n] === chessColor) { lineChess[0][nums] = m; lineChess[1][nums] = n; nums ; } else { break; } } for (m = i 1, n = j 1; m < 15 && n < 15; m , n ) { if (this.chessArr[m][n] === chessColor) { lineChess[0][nums] = m; lineChess[1][nums] = n; nums ; } else { break; } } if (nums >= 5) { for (k = nums - 1; k >= 0; k--) { this.markChess(lineChess[0][k] * 15 lineChess[1][k], isPlayerWin ? this.humanPlayer : this.AIPlayer); } return; } //右斜方向 nums = 1; lineChess[0] = [i]; lineChess[1] = [j]; for (m = i - 1, n = j 1; m >= 0 && n < 15; m--, n ) { if (this.chessArr[m][n] === chessColor) { lineChess[0][nums] = m; lineChess[1][nums] = n; nums ; } else { break; } } for (m = i 1, n = j - 1; m < 15 && n >= 0; m , n--) { if (this.chessArr[m][n] === chessColor) { lineChess[0][nums] = m; lineChess[1][nums] = n; nums ; } else { break; } } if (nums >= 5) { for (k = nums - 1; k >= 0; k--) { this.markChess(lineChess[0][k] * 15 lineChess[1][k], isPlayerWin ? this.humanPlayer : this.AIPlayer); } } }, markChess: function (pos, color) { $("div.chessboard div:eq(" pos ")").removeClass(color).addClass(color "-last"); }, //下子到i，j X方向结果: 多少连子两边是否截断 putDirectX: function (i, j, chessColor) { var m, n, nums = 1, side1 = false, side2 = false; for (m = j - 1; m >= 0; m--) { if (this.chessArr[i][m] === chessColor) { nums ; } else { if (this.chessArr[i][m] === this.NO_CHESS) { side1 = true; } break; } } for (m = j 1; m < 15; m ) { if (this.chessArr[i][m] === chessColor) { nums ; } else { if (this.chessArr[i][m] === this.NO_CHESS) { side2 = true; } break; } } return {"nums": nums, "side1": side1, "side2": side2}; }, //下子到i，j Y方向结果 putDirectY: function (i, j, chessColor) { var m, n, nums = 1, side1 = false, side2 = false; for (m = i - 1; m >= 0; m--) { if (this.chessArr[m][j] === chessColor) { nums ; } else { if (this.chessArr[m][j] === this.NO_CHESS) { side1 = true; } break; } } for (m = i 1; m < 15; m ) { if (this.chessArr[m][j] === chessColor) { nums ; } else { if (this.chessArr[m][j] === this.NO_CHESS) { side2 = true; } break; } } return {"nums": nums, "side1": side1, "side2": side2}; }, //下子到i，j XY方向结果 putDirectXY: function (i, j, chessColor) { var m, n, nums = 1, side1 = false, side2 = false; for (m = i - 1, n = j - 1; m >= 0 && n >= 0; m--, n--) { if (this.chessArr[m][n] === chessColor) { nums++; } else { if (this.chessArr[m][n] === this.NO_CHESS) { side1 = true; } break; } } for (m = i + 1, n = j + 1; m < 15 && n < 15; m++, n++) { if (this.chessArr[m][n] === chessColor) { nums++; } else { if (this.chessArr[m][n] === this.NO_CHESS) { side2 = true; } break; } } return {"nums": nums, "side1": side1, "side2": side2}; }, putDirectYX: function (i, j, chessColor) { var m, n, nums = 1, side1 = false, side2 = false; for (m = i - 1, n = j + 1; m >= 0 && n < 15; m--, n++) { if (this.chessArr[m][n] === chessColor) { nums++; } else { if (this.chessArr[m][n] === this.NO_CHESS) { side1 = true; } break; } } for (m = i + 1, n = j - 1; m < 15 && n >= 0; m++, n--) { if (this.chessArr[m][n] === chessColor) { nums++; } else { if (this.chessArr[m][n] === this.NO_CHESS) { side2 = true; } break; } } return {"nums": nums, "side1": side1, "side2": side2}; }, //计算下子至i,j的权重 computeWeight: function (i, j) { var weight = 14 - (Math.abs(i - 7) + Math.abs(j - 7)), //基于棋盘位置权重 pointInfo = {},//某点下子后连子信息 chessColor = this.AIPlayer === "black" ? this.BLACK_CHESS : this.WHITE_CHESS; //x方向 pointInfo = this.putDirectX(i, j, chessColor); weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, true);//AI下子权重 pointInfo = this.putDirectX(i, j, -chessColor); weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, false);//player下子权重 //y方向 pointInfo = this.putDirectY(i, j, chessColor); weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, true);//AI下子权重 pointInfo = this.putDirectY(i, j, -chessColor); weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, false);//player下子权重 //左斜方向 pointInfo = this.putDirectXY(i, j, chessColor); weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, true);//AI下子权重 pointInfo = this.putDirectXY(i, j, -chessColor); weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, false);//player下子权重 //右斜方向 pointInfo = this.putDirectYX(i, j, chessColor); weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, true);//AI下子权重 pointInfo = this.putDirectYX(i, j, -chessColor); weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, false);//player下子权重 return weight; }, //权重方案独：两边为空可下子，单：一边为空 weightStatus: function (nums, side1, side2, isAI) { var weight = 0; switch (nums) { case 1: if (side1 && side2) { weight = isAI ? 15 : 10;//独一 } break; case 2: if (side1 && side2) { weight = isAI ? 100 : 50;//独二 } else if (side1 || side2) { weight = isAI ? 10 : 5;//单二 } break; case 3: if (side1 && side2) { weight = isAI ? 500 : 200;//独三 } else if (side1 || side2) { weight = isAI ? 30 : 20;//单三 } break; case 4: if (side1 && side2) { weight = isAI ? 5000 : 2000;//独四 } else if (side1 || side2) { weight = isAI ? 400 : 100;//单四 } break; case 5: weight = isAI ? 100000 : 10000;//五 break; default: weight = isAI ? 500000 : 250000; break; } return weight; } }; </script>