The example in this article shares with you the specific code for implementing the backgammon game in js canvas for your reference. The specific content is as follows
Effect display:
Source code display:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>五子棋</title> <style> * { margin: 0; padding: 0; } body { margin-top: 20px; margin-left: 20px; } canvas { background-image: url("img/bak.jpg"); border: 1px solid #000; } </style> </head> <body> <canvas width="600" height="600" onclick="play(event)"></canvas> <script> /*准备工作: 1获取画布,获取画笔对象 */ var mcanvas = document.querySelector("canvas"); var ctx = mcanvas.getContext("2d"); /*准备工作:2创建一个二维数组 用来定义绘制棋盘线*/ var count = 15;//用来定义棋盘的行数和列数 var map = new Array(count); for (var i = 0; i < map.length; i++) { map[i] = new Array(count); for (var j = 0; j < map[i].length; j++) { map[i][j] = 0; } } /*准备工作:3初始化棋子*/ var black = new Image(); var white = new Image(); black.src = "img/black.png"; white.src = "img/white.png"; //开始绘制 1绘制棋盘线 ctx.strokeStyle = "#fff"; var rectWH = 40; //设置绘制矩形的大小 for (var i = 0; i < map.length; i++) { for (var j = 0; j < map[i].length; j++) { ctx.strokeRect(j * rectWH, i * rectWH, rectWH, rectWH); } } // 用来进行黑白子的切换 var isBlack = true; //开始绘制 2下子 function play(e) { //获取点击canvas的位置值默认,canvas的左上角为(0,0) 点 var leftOffset = 20;//body 的margin var x = e.clientX - leftOffset; var y = e.clientY - leftOffset; // console.log(x+" "+y); // 设置点击点后棋子下在哪里,获取点击的位置进行判断如果超过格子的一半则绘制到下一个点如果小于 则绘制在上一个点上 var xv = (x - rectWH / 2) / rectWH; var yv = (y - rectWH / 2) / rectWH; var col = parseInt(xv) + 1; var row = parseInt(yv) + 1; console.log(xv + " " + yv + " , " + col + " " + row); //严格点需要验证 ,验证所输入的点是否在数组中已经存在 ,如果存在 则返回 if (map[row][col] != 0) { alert("咋的,还想往我身上下啊!瞎啊!没看见已经有棋子了!!!"); return; } // 切换绘制黑白子 if (isBlack) { ctx.drawImage(black, col * 40 - 20, row * 40 - 20); isBlack = false; map[row][col] = 1; Yes(1, row, col); } else { ctx.drawImage(white, col * 40 - 20, row * 40 - 20); isBlack = true; map[row][col] = 2; Yes(2, row, col); } } //算法验证,查看谁赢 tag :1 :黑子 2 :白子 function Yes(t, row, col) { console.log(1); var orgrow = row; var orgcol = col; var total = 1; // 判断依据,以当前下的棋子为圆心,水平方向左右寻找和自己想通的值 ,最后判断如果大于5个则表示胜利 // 1水平方向判断 while (col - 1 > 0 && map[row][col - 1] == t) { //判断下一个值 注意一定是:col-1 total++; col--; } row = orgrow; col = orgcol; while (col + 1 < 15 && map[row][col + 1] == t) { col++; total++; } if (total >= 5) { if (t == 1){ alert("黑子赢"); } else{ alert("白子赢"); } return;//判断出输赢结束后续判断 } // 2垂直方向判断 row = orgrow; col = orgcol; total = 1; while (row - 1 > 0 && map[row - 1][col] == t) { row--; total++; } row = orgrow; col = orgcol; while (row + 1 < 15 && map[row + 1][col] == t) { row++; total++; } if (total >= 5) { if (t == 1){ alert("黑子赢"); } else{ alert("白子赢"); } return;//判断出输赢结束后续判断 } //左下 右上 row = orgrow; col = orgcol; total = 1; while (row + 1 < 15 && col - 1 > 0 && map[row + 1][col - 1] == t) { row++; col--; total++; } row = orgrow; col = orgcol; while (row - 1 > 0 && col + 1 < 15 && map[row - 1][col + 1] == t) { row--; col++; total++; } if (total >= 5) { if (t == 1){ alert("黑子赢"); } else{ alert("白子赢"); } return;//判断出输赢结束后续判断 } //左上右下 row = orgrow; col = orgcol; total = 1; while (row - 1 > 0 && col - 1 > 0 && map[row - 1][col - 1] == t) { row--; col--; total++; } row = orgrow; col = orgcol; while (row + 1 < 15 && col + 1 < 15 && map[row + 1][col + 1] == t) { row++; col++; total++; } if (total >= 5) { if (t == 1){ alert("黑子赢"); } else{ alert("白子赢"); } return;//判断出输赢结束后续判断 } } /*功能扩充: 1当胜利后 弹框:a是否在来一局 b 精彩回复 a 如果点击在来一句 清空数据重新开始 b 精彩回放将棋盘黑白子按照下棋的顺序进行棋子编号2悔棋功能 3对算法的扩充 a如果是双三 则直接弹出胜利 b若是桶四 则直接弹出胜利 */ </script> </body> </html>
Image resources:
Related learning recommendations:
The above is the detailed content of Implementing backgammon mini game based on js+canvas. For more information, please follow other related articles on the PHP Chinese website!

JavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

The shift from C/C to JavaScript requires adapting to dynamic typing, garbage collection and asynchronous programming. 1) C/C is a statically typed language that requires manual memory management, while JavaScript is dynamically typed and garbage collection is automatically processed. 2) C/C needs to be compiled into machine code, while JavaScript is an interpreted language. 3) JavaScript introduces concepts such as closures, prototype chains and Promise, which enhances flexibility and asynchronous programming capabilities.

Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

JavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

Zend Studio 13.0.1
Powerful PHP integrated development environment

SublimeText3 English version
Recommended: Win version, supports code prompts!

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool