• 用JS写了一个打字游戏,反正我是通不了关


      今天想写个简单的游戏, 打字游戏好像都没写过, 那么就写打字游戏吧, gamePad包含了关卡的信息, 可以用来调整给个关卡字符下落的速度;

      getRandom函数会返回一个字符对象, 这个对象包含了字符下落的速度和当前被定位的x,y值, 一整框代码比较有借鉴的地方就是, 只用了一个定时器, 而不是每一个字符都用一个定时器, 那样会严重影响性能;

      没使用第三方的库, 纯手贱, 用原生的js写游戏

    <html>
    <head>
        <meta charset="utf-8">
        <style>
            #conatiner{
                400px;
                height:500px;
                border:1px solid #eee;
                position: relative;
            }
        </style>
    </head>
        <body>
            <span>typing</span>
            <div>
                 <span id="score">0</span>得分
            </div>
            <div id="conatiner">
                
            </div>
            <button id="start">开始游戏</button>
        </body>
        <script>
            var gamePad = {
                1 : {
                    speed : 100
                },
                2 : {
                    speed : 90
                },
                3 : {
                    speed : 70
                },
                4 : {
                    speed : 40
                },
                5 : {
                    speed : 20
                }
            }
            var getRandom = function() {
                //随即一个97到122的字符;
                var charCode = 97+Math.floor(Math.random()*26);
                var speed = Math.ceil(Math.random()*4);
                return {
                    code : String.fromCharCode(charCode),
                    speed : speed,
                    y : 0,
                    x  : Math.floor(Math.random()*390),
                }
            };
            function game( n , score ) {
                var eConatiner = document.getElementById("conatiner");
                var eScore = document.getElementById("score");
                var showArr = []; //字符对象的列表
                var shoted = 0;
                //随机一个字符对象, 包含了字符的运动速度,字符的值
                //让showArr这个数组的数据运动;
                var run = function() {
                    //随机生成字符对象
                    if(Math.random()>0.9) {
                        var obj = getRandom();
                        showArr.push(obj);
                    }
                    //让元素运动
                    for(var i=0 ;i < showArr.length; i++) {
                        showArr[i].y+=showArr[i].speed;
                        if(showArr[i].y>500) {
                            //showArr.splice(i,1);
                            clear();
                            alert("游戏失败");
                            location.reload();
                        }
                    }
                    eConatiner.innerHTML = "";
                    //让元素添加到界面中;
                    for(var i=0 ;i < showArr.length; i++) {
                        var eSpan = document.createElement("span");
                        eSpan.style.position = "absolute";
                        eSpan.innerHTML = showArr[i].code;
                        eSpan.style.left = showArr[i].x;
                        eSpan.style.top = showArr[i].y;
                        eConatiner.appendChild(eSpan);
                    }
                }
                var keyup = function(ev) {
                    for(var i=0 ;i < showArr.length; i++) {
                        if(showArr[i].code === ev.key || String.fromCharCode(ev.keyCode).toLowerCase() == showArr[i].code) {
                            showArr.splice(i,1);
                            shoted++;
                            eScore.innerHTML = shoted;
                            if(shoted === score && gamePad[n+1] === undefined) {
                                alert("少侠你好厉害, 你好快, 真的好快好快的");
                            }else if(shoted === score) {
                                clear();
                                alert("进入下一关");
                                game(n+1, score+10)
                            }
                            return;
                        }
                    }
                }
                var clear = function() {
                    clearInterval(game.timer);
                    window.removeEventListener("keyup", keyup);
                }
                window.addEventListener("keyup", keyup);
                game.timer = setInterval(run,gamePad[n].speed);
            }
            document.getElementById("start").addEventListener("click", function() {
                game(1, 10);
            });
        </script>
    </html>

       重新整理代码, 修改成面向对象样子, 过程式的代码太乱了, 虽然说是面向对象, 只是JS看起来舒服多;

       通过面向对象的思维把JS代码各个模块进行封装, 避免作用域的混乱不堪:

    <html>
    <head>
        <meta charset="utf-8">
        <style>
            #conatiner{
                400px;
                height:500px;
                border:1px solid #eee;
                position: relative;
            }
        </style>
    </head>
        <body>
            <span>typing</span>
            <div>
                 <span id="score">0</span>得分 ; 
                 需要:<span id="need"></span>分;
            </div>
            <div id="conatiner">
                
            </div>
            <button id="start">开始游戏</button>
        </body>
        <script>
            var eConatiner = document.getElementById("conatiner");
            var eScore = document.getElementById("score");
            var getRandom = function() {
                //随即一个97到122的字符;
                var charCode = 97+Math.floor(Math.random()*26);
                var speed = Math.ceil(Math.random()*4);
                return {
                    code : String.fromCharCode(charCode),
                    speed : speed,
                    y : 0,
                    x  : Math.floor(Math.random()*390),
                }
            };
    
            function Game( n , score , eConatiner, eScore ,need) {
                this.need = need;
                this.need.innerHTML = score;
                this.showArr = []; //字符对象的列表
                this.shoted = 0;
                this.n = n;
                this.score = score;
                this.eConatiner = eConatiner;
                this.eScore = eScore;
                this.events();
                this.run();
                this.timer = setInterval(this.run.bind(this), Game.gamePad[n].speed);
            }
            Game.gamePad = {
                1 : {
                    speed : 100
                },
                2 : {
                    speed : 90
                },
                3 : {
                    speed : 70
                },
                4 : {
                    speed : 40
                },
                5 : {
                    speed : 20
                }
            }
            Game.prototype.keyup = function(ev) {
                showArr = this.showArr;
                for(var i=0 ;i < showArr.length; i++) {
                    if(showArr[i].code === ev.key || String.fromCharCode(ev.keyCode).toLowerCase() == showArr[i].code) {
                        showArr.splice(i,1);
                        this.shoted++;
                        this.eScore.innerHTML = this.shoted;
                        if(this.shoted === this.score && Game.gamePad[this.n+1] === undefined) {
                            alert("少侠你好厉害, 你好快, 真的好快好快的");
                        }else if(this.shoted === this.score) {
                            this.unbind();
                            alert("进入下一关");
                            new Game(this.n+1, this.score+10, this.eConatiner, this.eScore, this.need);
                        }
                        return;
                    }
                }
            }
            Game.prototype.events = function() {
                this.keyup = this.keyup.bind(this);
                window.addEventListener("keyup", this.keyup);
            }
            Game.prototype.unbind = function() {
                clearInterval(this.timer);
                window.removeEventListener("keyup", this.keyup);
            }
            //随机一个字符对象, 包含了字符的运动速度,字符的值
            //让showArr这个数组的数据运动;
            Game.prototype.run = function(){
                showArr = this.showArr;
                //随机生成字符对象
                if(Math.random()>0.9) {
                    var obj = getRandom();
                    showArr.push(obj);
                }
                //让元素运动
                for(var i=0 ;i < showArr.length; i++) {
                    showArr[i].y+=showArr[i].speed;
                    if(showArr[i].y>500) {
                        alert("游戏失败");
                        location.reload();
                    }
                }
                this.eConatiner.innerHTML = "";
                //让元素添加到界面中;
                for(var i=0 ;i < showArr.length; i++) {
                    var eSpan = document.createElement("span");
                    eSpan.style.position = "absolute";
                    eSpan.innerHTML = showArr[i].code;
                    eSpan.style.left = showArr[i].x;
                    eSpan.style.top = showArr[i].y;
                    this.eConatiner.appendChild(eSpan);
                }
            }
            document.getElementById("start").addEventListener("click", function() {
                new Game(1, 10, eConatiner, eScore, document.getElementById("need"));
            });
        </script>
    </html>

    作者: NONO
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  • 原文地址:https://www.cnblogs.com/diligenceday/p/5857103.html
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