利用纯JS和HTML Canvas生成随机迷宫过程中产生的有趣的事情
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2022-03-14 10:03:19
1 2 3 生成随机迷宫v1.0 4 5 6 7 8 ......
上效果图：
#先看生成随机迷宫的代码吧↓
1 <html>
2 <head>
3 <title>生成随机迷宫v1.0</title>
4 </head>
5 <body>
6 <center style="margin-top: 20px;">
7 <canvas id="myCan1" title="作者：谢辉"></canvas>
8 <p>生成随机迷宫v1.0</p>
9 <button onclick="history.go(0);">刷新</button>
10 </center>
11 </body>
12 <script>
13 var width = 1600;
14 var height = 800;
15 var cellWidth = 40;
16 var canvas = document.getElementById("myCan1");
17 var cxt = canvas.getContext("2d");
18 // 初始化canvas容器
19 function initCanvas() {
20 canvas.width = width;
21 canvas.height = height;
22 canvas.style = "border-radius: 15px";
23 canvas.style.border = "1px solid #3b3b3b";
24 };
25 initCanvas();
26 // 初始化画布
27 function initContext(cxt) {
28 cxt.lineCap="round";
29 cxt.lineJoin="round";
30 cxt.lineWidth = 1;
31 }
32 initContext(cxt);
33 // 开始画迷宫
34 function drawMaze(cxt) {
35 drawSingleBox(8, 0, 0, cxt);
36 };
37 /*setInterval(function(){
38 cxt.clearRect(0, 0, width, height);
39 drawMaze(cxt);
40 }, 50);*/
41 drawMaze(cxt);
42 // 递归画单元格
43 function drawSingleBox(option, posX, posY, cxt){
44 //cxt.strokeStyle = getColor();
45 switch(option){
46 case 0:
47 cxt.beginPath();
48 cxt.moveTo(posX, posY);
49 cxt.lineTo(posX + cellWidth, posY);
50 cxt.stroke();
51 break;
52 case 1:
53 cxt.beginPath();
54 cxt.moveTo(posX + cellWidth, posY);
55 cxt.lineTo(posX + cellWidth, posY + cellWidth);
56 cxt.stroke();
57 break;
58 case 2:
59 cxt.beginPath();
60 cxt.moveTo(posX, posY + cellWidth);
61 cxt.lineTo(posX + cellWidth, posY + cellWidth);
62 cxt.stroke();
63 break;
64 case 3:
65 cxt.beginPath();
66 cxt.moveTo(posX, posY);
67 cxt.lineTo(posX, posY + cellWidth);
68 cxt.stroke();
69 break;
70 }
71 if(posX >= width - cellWidth && posY >= height - cellWidth) {
72 return;
73 } else {
74 posX += cellWidth;
75 if(posX >= width){
76 posX = 0;
77 posY += cellWidth;
78 }
79 drawSingleBox(Math.floor(Math.random()*4), posX, posY, cxt);
80 }
81 }
82 // 随机出任意颜色
83 function getColor(){
84 var colorElements = "0,1,2,3,4,5,6,7,8,9,a,b,c,d,e,f";
85 var colorArray = colorElements.split(",");
86 var color ="#";
87 for(var i =0;i<6;i++){
88 color+=colorArray[Math.floor(Math.random()*16)];
89 }
90 return color;
91 }
92 </script>
93 </html>
#去掉代码注释，神奇的一幕出现了，自己看看吧
1 setInterval(function(){
2 cxt.clearRect(0, 0, width, height);
3 drawMaze(cxt);
4 }, 50);
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