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本文实例为大家分享了js实现贪吃蛇游戏的具体代码,供大家参考,具体内容如下
直接开始
效果图:
项目结构:图片自己找的
1.html
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title></title> <style type="text/css"> * { padding: 0; margin: 0; } </style> </head> <body> <canvas id='view' width="400" height="400" style="border:1px solid red;"></canvas> <button id='start'>开始</button> <button id='parse'>暂停</button> <button id='restart'>重新开始</button> <h4>最高分: <span id='scoreMax' style='color:red;'>0</span></h4> <h4>分数: <span id='score' style='color:skyblue;'>0</span></h4> <script src="/UploadFiles/2021-04-02/config.js">2.area.js
function render(x, y, color, img) { ctx.beginPath(); ctx.fillStyle = color || 'red'; if (img) { ctx.drawImage(img, x * w, y * h, img.width, img.height); } else { ctx.fillRect(x * w, y * h, w, h); } ctx.closePath(); ctx.fill(); } function clear(x, y) { ctx.clearRect(x * w, y * h, w, h); }3.config.js
var exit = []; var parse = true; var view = document.getElementById('view'); var ctx = view.getContext('2d'); var width = 400, height = 400; var w = 20, h = 20; var maxX = (width / w) - 1, maxY = (height / h) - 1; var speed = 500; var scoreMax = 0; var imgsrcs = [ './img/snakeheadup.png', //图片自己找 './img/snakeheaddown.png', './img/snakeheadleft.png', './img/snakeheadright.png' ]; var imgs = []; var length = 4; for (var i = 0, len = imgsrcs.length; i < len; i++) { var img = new Image(20,20); img.src = imgsrcs[i]; imgs[i] = img; } var food, snake, move, score;4.food.js
function Food() { this.init(); } Food.prototype = { init: function() { this.update(); }, update: function() { var food = this.makeCoordinate(); this.food = food; var foodX = food[0]; var foodY = food[1]; this.render(foodX, foodY); }, render: function(x, y) { render(x, y, 'blue'); }, makeCoordinate: function() { var x = this.random(0, maxX); var y = this.random(0, maxY); for (var i = 0; i < exit.length; i++) { if (exit[i].toString() == [x, y].toString()) { return this.makeCoordinate(); } } return [x, y]; }, random: function(min, max) { return Math.floor(Math.random() * (max - min + 1)) + min; } }5.init.js
function init() { food = new Food(); snake = new Snake(); move = new Move(); score = new Score(); var timer = setInterval(function() { if (!parse) { snake.move(); } }, speed); } for (var j = 0; j < imgs.length; j++) { imgs[j].onload = function() { length--; if (length == 0) { init(); } } }6.move.js
function Move() { } Move.prototype = { up: function(s) { snake.move('up'); }, down: function(s) { snake.move('down'); }, left: function(s) { snake.move('left'); }, right: function(s) { snake.move('right'); } } document.onkeydown = function(e) { var key = e.keyCode; if(!parse){ switch (key) { case 37: case 65: move.left(snake); break; case 38: case 87: move.up(snake); break; case 39: case 68: move.right(snake); break; case 40: case 83: move.down(snake); break; default: break; } } };7.score.js
var scoreDom = document.getElementById('score'); var scoreMaxDom = document.getElementById('scoreMax'); function Score() { this.score = 0; } Score.prototype = { scoreAdd: function() { this.score += 1; scoreDom.innerHTML = this.score; }, scoreClear: function() { this.score = 0; scoreDom.innerHTML = 0; }, highScore: function() { scoreMax = scoreMax > this.score "htmlcode">function Snake() { this.head = [0, 5, imgs[1]]; // x,y坐标,头 this.body = []; // 二维数组,身体 this.snake = []; //完整的蛇 this.init(6); this.direction = 'down'; // 默认向下运动 } Snake.prototype = { init: function(len) { len = len ? len > 10 ? 10 : len : 5; var head = this.head = [0, len, imgs[1]]; var body = this.body; for (var i = 0; i < len; i++) { body.push([0, i]); } this.getSnake(); }, restart: function() { ctx.clearRect(0, 0, width, height); this.head = [0, 5, imgs[1]]; // x,y坐标,头 this.body = []; // 二维数组,身体 this.snake = []; //完整的蛇 exit = []; this.direction = 'down'; // 默认向下运动 this.init(6); food.update(); score.scoreClear(); }, eat: function() { var head = [this.head[0], this.head[1]]; var body = this.body; if (food.food.toString() == head.toString()) { food.update(); score.scoreAdd(); return true; } return false; }, update: function(direction) { var oldDirection = this.direction; this.direction = direction || this.direction; if ((this.direction == 'down' && oldDirection == 'up') || (this.direction == 'up' && oldDirection == 'down') || (this.direction == 'left' && oldDirection == 'right') || (this.direction == 'right' && oldDirection == 'left')) { this.direction = oldDirection; } if (this.direction == 'left' && oldDirection != 'right') { this.head[0] -= 1; this.head[2] = imgs[2]; } else if (this.direction == 'right' && oldDirection != 'left') { this.head[0] += 1; this.head[2] = imgs[3]; } else if (this.direction == 'up' && oldDirection != 'down') { this.head[1] -= 1; this.head[2] = imgs[0]; } else if (this.direction == 'down' && oldDirection != 'up') { this.head[1] += 1; this.head[2] = imgs[1]; } this.die(); }, gameOver: function() { alert('game over!') console.log('game over!'); parse = true; score.highScore(); }, die: function() { var head = this.head; var x = head[0], y = head[1]; if (x < 0 || x > maxX || y < 0 || y > maxY) { this.gameOver(); } var body = this.body; for (var i = 0; i < body.length; i++) { if (body[i].toString() == [x, y].toString()) { this.gameOver(); } } }, render: function() { var snake = this.snake; for (var i = 0, len = snake.length; i < len; i++) { var item = snake[i]; render(item[0], item[1], 'green', item[2]); } }, move: function(direction) { var head = this.head; var headCopy = head.slice(); //之前的头 var body = this.body; body.push([headCopy[0], headCopy[1]]); this.update(direction); var eat = this.eat(); if (!eat) { var del = body.shift(); clear(del[0], del[1]); } this.getSnake(); }, getSnake: function() { var head = this.head; var body = this.body; var snake = this.snake = []; for (var i = 0, l = body.length; i < l; i++) { snake.push(body[i]); } snake.push(head); exit = []; for (var i = 0; i < snake.length; i++) { exit.push(snake[i]); } this.render(); } }以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
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暂无js实现贪吃蛇游戏(简易版)的评论...
稳了!魔兽国服回归的3条重磅消息!官宣时间再确认!
昨天有一位朋友在大神群里分享,自己亚服账号被封号之后居然弹出了国服的封号信息对话框。
这里面让他访问的是一个国服的战网网址,com.cn和后面的zh都非常明白地表明这就是国服战网。
而他在复制这个网址并且进行登录之后,确实是网易的网址,也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情,因为以前都没有出现这样的情况,现在突然提示跳转到国服战网的网址,是不是说明了简体中文客户端已经开始进行更新了呢?