原生JS+Canvas实现五子棋游戏
2017-08-11 1434
本文实例为大家分享了JS Canvas实现五子棋游戏的具体代码，供大家参考，具体内容如下
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 | <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>五子棋</title> <style type='text/css'> canvas { display: block; margin: 50px auto; box-shadow: -2px -2px 2px #efefef, 5px 5px 5px #b9b9b9; cursor: pointer; } .btn-wrap { display: flex; flex-direction: row; justify-content:center; } .btn-wrap div { margin: 0 10px; } div>span { display: inline-block; padding: 10px 20px; color: #fff; background-color: #EE82EE; border-radius: 5px; cursor: pointer; } div.unable span { background: #D6D6D4; color: #adacaa; } #result-wrap {text-align: center;} </style> </head> <body> <h3 id="result-wrap">--益智五子棋--</h3> <canvas id="chess" width="450px" height="450px"></canvas> <div class="btn-wrap"> <div id='restart' class="restart"> <span>重新开始</span> </div> <div id='goback' class="goback unable"> <span>悔棋</span> </div> <div id='return' class="return unable"> <span>撤销悔棋</span> </div> </div> <script type="text/javascript" charset="utf-8"> var over = false; var me = true; //我 var _nowi = 0, _nowj = 0; //记录自己下棋的坐标 var _compi = 0, _compj = 0; //记录计算机当前下棋的坐标 var _myWin = [], _compWin = []; //记录我，计算机赢的情况 var backAble = false, returnAble = false; var resultTxt = document.getElementById('result-wrap'); var chressBord = [];//棋盘 for(var i = 0; i < 15; i++){ chressBord[i] = []; for(var j = 0; j < 15; j++){ chressBord[i][j] = 0; } } //赢法的统计数组 var myWin = []; var computerWin = []; //赢法数组 var wins = []; for(var i = 0; i < 15; i++){ wins[i] = []; for(var j = 0; j < 15; j++){ wins[i][j] = []; } } var count = 0; //赢法总数 //横线赢法 for(var i = 0; i < 15; i++){ for(var j = 0; j < 11; j++){ for(var k = 0; k < 5; k++){ wins[i][j+k][count] = true; } count++; } } //竖线赢法 for(var i = 0; i < 15; i++){ for(var j = 0; j < 11; j++){ for(var k = 0; k < 5; k++){ wins[j+k][i][count] = true; } count++; } } //正斜线赢法 for(var i = 0; i < 11; i++){ for(var j = 0; j < 11; j++){ for(var k = 0; k < 5; k++){ wins[i+k][j+k][count] = true; } count++; } } //反斜线赢法 for(var i = 0; i < 11; i++){ for(var j = 14; j > 3; j--){ for(var k = 0; k < 5; k++){ wins[i+k][j-k][count] = true; } count++; } } // debugger; for(var i = 0; i < count; i++){ myWin[i] = 0; _myWin[i] = 0; computerWin[i] = 0; _compWin[i] = 0; } var chess = document.getElementById("chess"); var context = chess.getContext('2d'); context.strokeStyle = '#bfbfbf'; //边框颜色 var backbtn = document.getElementById("goback"); var returnbtn = document.getElementById("return"); window.onload = function(){ drawChessBoard(); // 画棋盘 } document.getElementById("restart").onclick = function(){ window.location.reload(); } // 我，下棋 chess.onclick = function(e){ if(over){ return; } if(!me){ return; } // 悔棋功能可用 backbtn.className = backbtn.className.replace( new RegExp( "(\\s|^)unable(\\s|$)" )," " ); var x = e.offsetX; var y = e.offsetY; var i = Math.floor(x / 30); var j = Math.floor(y / 30); _nowi = i; _nowj = j; if(chressBord[i][j] == 0){ oneStep(i,j,me); chressBord[i][j] = 1; //我，已占位置 for(var k = 0; k < count; k++){ // 将可能赢的情况都加1 if(wins[i][j][k]){ // debugger; myWin[k]++; _compWin[k] = computerWin[k]; computerWin[k] = 6;//这个位置对方不可能赢了 if(myWin[k] == 5){ // window.alert('你赢了'); resultTxt.innerHTML = '恭喜，你赢了！'; over = true; } } } if(!over){ me = !me; computerAI(); } } } // 悔棋 backbtn.onclick = function(e){ if(!backAble) { return;} over = false; me = true; // resultTxt.innerHTML = 'o(╯□╰)o，悔棋中'; // 撤销悔棋功能可用 returnbtn.className = returnbtn.className.replace( new RegExp( "(\\s|^)unable(\\s|$)" )," " ); // 我，悔棋 chressBord[_nowi][_nowj] = 0; //我，已占位置 还原 minusStep(_nowi, _nowj); //销毁棋子 for(var k = 0; k < count; k++){ // 将可能赢的情况都减1 if(wins[_nowi][_nowj][k]){ myWin[k]--; computerWin[k] = _compWin[k];//这个位置对方可能赢 } } // 计算机相应的悔棋 chressBord[_compi][_compj] = 0; //计算机，已占位置 还原 minusStep(_compi, _compj); //销毁棋子 for(var k = 0; k < count; k++){ // 将可能赢的情况都减1 if(wins[_compi][_compj][k]){ computerWin[k]--; myWin[k] = _myWin[i];//这个位置对方可能赢 } } resultTxt.innerHTML = '--益智五子棋--'; returnAble = true; backAble = false; } // 撤销悔棋 returnbtn.onclick = function(e){ if(!returnAble) { return; } // 我，撤销悔棋 chressBord[_nowi][_nowj] = 1; //我，已占位置 oneStep(_nowi,_nowj,me); for(var k = 0; k < count; k++){ if(wins[_nowi][_nowj][k]){ myWin[k]++; _compWin[k] = computerWin[k]; computerWin[k] = 6;//这个位置对方不可能赢 } if(myWin[k] == 5){ resultTxt.innerHTML = '恭喜，你赢了！'; over = true; } } // 计算机撤销相应的悔棋 chressBord[_compi][_compj] = 2; //计算机，已占位置 oneStep(_compi,_compj,false); for(var k = 0; k < count; k++){ // 将可能赢的情况都减1 if(wins[_compi][_compj][k]){ computerWin[k]++; _myWin[k] = myWin[k]; myWin[k] = 6;//这个位置对方不可能赢 } if(computerWin[k] == 5){ resultTxt.innerHTML = 'o(╯□╰)o，计算机赢了，继续加油哦！'; over = true; } } returnbtn.className += ' '+ 'unable'; returnAble = false; backAble = true; } // 计算机下棋 var computerAI = function (){ var myScore = []; var computerScore = []; var max = 0; var u = 0, v = 0; for(var i = 0; i < 15; i++){ myScore[i] = []; computerScore[i] = []; for(var j = 0; j < 15; j++){ myScore[i][j] = 0; computerScore[i][j] = 0; } } for(var i = 0; i < 15; i++){ for(var j = 0; j < 15; j++){ if(chressBord[i][j] == 0){ for(var k = 0; k < count; k++){ if(wins[i][j][k]){ if(myWin[k] == 1){ myScore[i][j] += 200; }else if(myWin[k] == 2){ myScore[i][j] += 400; }else if(myWin[k] == 3){ myScore[i][j] += 2000; }else if(myWin[k] == 4){ myScore[i][j] += 10000; } if(computerWin[k] == 1){ computerScore[i][j] += 220; }else if(computerWin[k] == 2){ computerScore[i][j] += 420; }else if(computerWin[k] == 3){ computerScore[i][j] += 2100; }else if(computerWin[k] == 4){ computerScore[i][j] += 20000; } } } if(myScore[i][j] > max){ max = myScore[i][j]; u = i; v = j; }else if(myScore[i][j] == max){ if(computerScore[i][j] > computerScore[u][v]){ u = i; v = j; } } if(computerScore[i][j] > max){ max = computerScore[i][j]; u = i; v = j; }else if(computerScore[i][j] == max){ if(myScore[i][j] > myScore[u][v]){ u = i; v = j; } } } } } _compi = u; _compj = v; oneStep(u,v,false); chressBord[u][v] = 2; //计算机占据位置 for(var k = 0; k < count; k++){ if(wins[u][v][k]){ computerWin[k]++; _myWin[k] = myWin[k]; myWin[k] = 6;//这个位置对方不可能赢了 if(computerWin[k] == 5){ resultTxt.innerHTML = 'o(╯□╰)o，计算机赢了，继续加油哦！'; over = true; } } } if(!over){ me = !me; } backAble = true; returnAble = false; var hasClass = new RegExp('unable').test(' ' + returnbtn.className + ' '); if(!hasClass) { returnbtn.className += ' ' + 'unable'; } } //绘画棋盘 var drawChessBoard = function() { for(var i = 0; i < 15; i++){ context.moveTo(15 + i * 30 , 15); context.lineTo(15 + i * 30 , 435); context.stroke(); context.moveTo(15 , 15 + i * 30); context.lineTo(435 , 15 + i * 30); context.stroke(); } } //画棋子 var oneStep = function(i,j,me) { context.beginPath(); context.arc(15 + i * 30, 15 + j * 30, 13, 0, 2 * Math.PI);// 画圆 context.closePath(); //渐变 var gradient = context.createRadialGradient(15 + i * 30 + 2, 15 + j * 30 - 2, 13, 15 + i * 30 + 2, 15 + j * 30 - 2, 0); if(me){ gradient.addColorStop(0,'#0a0a0a'); gradient.addColorStop(1,'#636766'); }else{ gradient.addColorStop(0,'#d1d1d1'); gradient.addColorStop(1,'#f9f9f9'); } context.fillStyle = gradient; context.fill(); } //销毁棋子 var minusStep = function(i,j) { //擦除该圆 context.clearRect((i) * 30, (j) * 30, 30, 30); // 重画该圆周围的格子 context.beginPath(); context.moveTo(15+i*30 , j*30); context.lineTo(15+i*30 , j*30 + 30); context.moveTo(i*30, j*30+15); context.lineTo((i+1)*30 , j*30+15); context.stroke(); } </script> </body> </html> |
