javascript - 如何将倒数计时器添加到我的页面

Question

我目前正在使用 jQuery 和 JavaScript 开发一个 Simon says 类型的游戏。

我已经在 Github 上链接了一个完整的游戏副本

Github下载解压完整游戏https://github.com/Jamiex304/Simon_Says_Game_Demo(现已停用)

我遇到了一个问题，我想添加一个玩家可以看到的计时器。

目前，关卡会一直持续到用户点击序列中的错误按钮为止。

游戏的一些基本信息:
用户将看到一个随机序列，每个级别都会添加一个新序列以及一个额外的移动。每次用户输入正确的序列时，他们都会进入下一个级别所有信息都可以在附带的带有注释的 JavaScript 中找到

我需要帮助添加的内容

我只想添加一个计时器，当用户单击开始按钮时，它会在 10 秒后开始计时。
每次输入正确的顺序时，计时器都会再次启动当他们达到 5 个正确的序列时，计时器会额外增加 5 秒。

我附上了处理游戏事件的 JavaScript，并且有一个指向完整站点的链接。

任何帮助都会很棒。

JavaScript

var game={ //game object
    level: 1, //current level
    turn: 0, //current turn
    difficulty: 1, // user difficulty
    score: 0, //current score
    active: false, //whether a turn is active or not
    handler: false, // whether the click and sound handlers are active
    shape: '.shape', // cached string for the pad class
    genSequence: [], //array containing the generated/randomized pads
    plaSequence: [], //array containing the users pad selections
    
    init: function(){                   //initialises the game
        if(this.handler === false){     //checks to see if handlers are already active
            this.initPadHandler();      //if not activate them
        }
        this.newGame();             //reset the game defaults

    },

    initPadHandler: function(){

        that=this;

        $('.pad').on('mouseup',function(){

            if(that.active===true){

                var pad=parseInt($(this).data('pad'),10);
                    
                that.flash($(this),1,300, pad);

                that.logPlayerSequence(pad);

            }
        });

        this.handler=true;

    },

    newGame: function(){            //resets the game and generates a starts a new level

        this.level=1;
        this.score=0;
        this.newLevel();
        this.displayLevel();
        this.displayScore();

    },

    newLevel: function(){
        
        this.genSequence.length=0;
        this.plaSequence.length=0;
        this.pos=0;
        this.turn=0;
        this.active=true;
        
        this.randomizePad(this.level); //randomize pad with the correct amount of numbers for this level
        this.displaySequence(); //show the user the sequence

    },
    
    flash: function(element, times, speed, pad){ //function to make the pads appear to flash

        var that = this;                        //cache this

        if(times > 0){                          //make sure we are supposed to flash
            that.playSound(pad);                //play the corresponding pad sound
            element.stop().animate({opacity: '1'}, {        //animate the element to appear to flash
                duration: 50,
                complete: function(){
                element.stop().animate({opacity: '0.6'}, 200);
                }
            });                                             //end animation

        }

        if (times > 0) {                                    //call the flash function again until done the correct amount of times 
            setTimeout(function () {
                that.flash(element, times, speed, pad);
            }, speed);
            times -= 1;                     //times - 1 for each time it's called
        }
    },

    playSound: function(clip){              //plays the sound that corresponds to the pad chosen


        var sound= $('.sound'+clip)[0];
        console.log(sound);
        console.log($('.sound'+clip));
        sound.currentTime=0;                //resets audio position to the start of the clip
        sound.play();                       //play the sound


    },

    randomizePad: function(passes){         //generate random numbers and push them to the generated number array iterations determined by current level

        for(i=0;i<passes;i++){
            
            this.genSequence.push(Math.floor(Math.random() * 4) + 1);
        }
    },

    logPlayerSequence: function(pad){       //log the player selected pad to user array and call the checker function

        this.plaSequence.push(pad);
        this.checkSequence(pad);
        
    
    },

    checkSequence: function(pad){           //checker function to test if the pad the user pressed was next in the sequence

        that=this;

        if(pad !== this.genSequence[this.turn]){    //if not correct 
                
                this.incorrectSequence();

            }else{                                  //if correct
                this.keepScore();                   //update the score
                this.turn++;                        //incrememnt the turn

            }

        if(this.turn === this.genSequence.length){  //if completed the whole sequence
            
            this.level++;                           //increment level, display it, disable the pads wait 1 second and then reset the game
            this.displayLevel();
            this.active=false;
            setTimeout(function(){
                that.newLevel();
            },1000);
        }
    },

    displaySequence: function(){                    //display the generated sequence to the user
        
        var that=this;

        $.each(this.genSequence, function(index, val) {     //iterate over each value in the generated array
            
            setTimeout(function(){
                
                that.flash($(that.shape+val),1,300,val);
            
            },500*index*that.difficulty);               // multiply timeout by how many items in the array so that they play sequentially and multiply by the difficulty modifier
        });
    },

    displayLevel: function(){                           //just display the current level on screen
        
        $('.level h2').text('Level: '+this.level);

    },

    displayScore: function(){                           //display current score on screen
        $('.score h2').text('Score: '+this.score);
    },

    keepScore: function(){                              //keep the score
        
        var multiplier=0;

        switch(this.difficulty)                         //choose points modifier based on difficulty
        {
            case '2':
                multiplier=1;
                break;
            
            case '1':
                multiplier=2;
                break;

            case '0.5':
                multiplier = 3;
                break;

            case '0.25':
                multiplier = 4;
                break;
        }

        this.score += (1 * multiplier);                 //work out the score

        this.displayScore();                            //display score on screen
    },

    incorrectSequence: function(){                      //if user makes a mistake

        var corPad = this.genSequence[this.turn],       //cache the pad number that should have been pressed
            
            that = this;
            this.active=false;
            this.displayLevel();
            this.displayScore();

        setTimeout(function(){                          //flash the pad 4 times that should have been pressed
            that.flash($(that.shape+corPad),4,300,corPad);
        },500);

        $('.start').show();                             //enable the start button again and allow difficulty selection again
        $('.difficulty').show();

    }

};
$(document).ready(function(){                           //document ready

    $('.start').on('mouseup', function(){               //initialise a game when the start button is clicked
        $(this).hide();
        game.difficulty = $('input[name=difficulty]:checked').val();
        $('.difficulty').hide();
        game.init();


    });

    
});

Answer 1

好的，我想我已经按照你想要的方式做到了，这里是完整的 js:

(我已经评论了我添加的部分)

var game={ //game object
    level: 1, //current level
    turn: 0, //current turn
    difficulty: 1, // user difficulty
    score: 0, //current score
    active: false, //whether a turn is active or not
    handler: false, // whether the click and sound handlers are active
    shape: '.shape', // cached string for the pad class
    genSequence: [], //array containing the generated/randomized pads
    plaSequence: [], //array containing the users pad selections

    init: function(){                   //initialises the game
        if(this.handler === false){     //checks to see if handlers are already active
            this.initPadHandler();      //if not activate them
        }
        this.newGame();             //reset the game defaults

    },

    initPadHandler: function(){

        that=this;

        $('.pad').on('mouseup',function(){

            if(that.active===true){

                var pad=parseInt($(this).data('pad'),10);

                that.flash($(this),1,300, pad);

                that.logPlayerSequence(pad);

            }
        });

        this.handler=true;

    },

    newGame: function(){            //resets the game and generates a starts a new level

        this.level=1;
        this.score=0;
        this.newLevel();
        this.displayLevel();
        this.displayScore();

        //initialize timer to 10 seconds
        this.timer = 10;  

    },

    newLevel: function(){

        this.genSequence.length=0;
        this.plaSequence.length=0;
        this.pos=0;
        this.turn=0;
        this.active=true;

        this.randomizePad(this.level); //randomize pad with the correct amount of numbers for this level
        this.displaySequence(); //show the user the sequence
    },

    flash: function(element, times, speed, pad){ //function to make the pads appear to flash

        var that = this;                        //cache this

        if(times > 0){                          //make sure we are supposed to flash
            that.playSound(pad);                //play the corresponding pad sound
            element.stop().animate({opacity: '1'}, {        //animate the element to appear to flash
                duration: 50,
                complete: function(){
                element.stop().animate({opacity: '0.6'}, 200);
                }
            });                                             //end animation

        }

        if (times > 0) {                                    //call the flash function again until done the correct amount of times 
            setTimeout(function () {
                that.flash(element, times, speed, pad);
            }, speed);
            times -= 1;                     //times - 1 for each time it's called
        }
    },

    playSound: function(clip){              //plays the sound that corresponds to the pad chosen


        var sound= $('.sound'+clip)[0];
        console.log(sound);
        console.log($('.sound'+clip));
        sound.currentTime=0;                //resets audio position to the start of the clip
        sound.play();                       //play the sound


    },

    randomizePad: function(passes){         //generate random numbers and push them to the generated number array iterations determined by current level

        for(i=0;i<passes;i++){

            this.genSequence.push(Math.floor(Math.random() * 4) + 1);
        }
    },

    logPlayerSequence: function(pad){       //log the player selected pad to user array and call the checker function

        this.plaSequence.push(pad);
        this.checkSequence(pad);


    },

    checkSequence: function(pad){           //checker function to test if the pad the user pressed was next in the sequence

        that=this;

        if(pad !== this.genSequence[this.turn]){    //if not correct 

                this.incorrectSequence();

            }else{                                  //if correct
                this.keepScore();                   //update the score
                this.turn++;                        //incrememnt the turn

            }

        if(this.turn === this.genSequence.length){  //if completed the whole sequence

            this.level++;                           //increment level, display it, disable the pads wait 1 second and then reset the game
            this.displayLevel();
            this.active=false;

            // Stop counting when sequence is correct to avoid time running out before starting next level
            clearInterval(this.timerInterval);

            //Add 5 seconds each 5th level
            this.timer = 10 + 5 * Math.floor(this.level / 5);

            //Update timerdisplay to show fulltime while displaying next level sequence
            $(".Timer p").html(this.timer);

            setTimeout(function(){
                that.newLevel();
            },1000);
        }
    },

    // Countdown and update timer, call incorrectsequence when time's up
    countDown: function(){ 
        this.timer -= 0.1;
        $(".Timer p").html(this.timer.toFixed(1));   // Display 9.0 instad of 9
        if(this.timer < 0.1){
            this.incorrectSequence();
        }
    },

    displaySequence: function(){                    //display the generated sequence to the user

        var that=this;

        var timerCount = 0;

        $.each(this.genSequence, function(index, val) {     //iterate over each value in the generated array
            timerCount = index;
            setTimeout(function(){

                that.flash($(that.shape+val),1,300,val);

            },500*index*that.difficulty);               // multiply timeout by how many items in the array so that they play sequentially and multiply by the difficulty modifier
        });

        // Wait to start timer until full sequence is displayed
        setTimeout(function(){ that.timerInterval = setInterval(function(){that.countDown()}, 100)}, 500*timerCount*that.difficulty);
    },

    displayLevel: function(){                           //just display the current level on screen

        $('.level h2').text('Level: '+this.level);

    },

    displayScore: function(){                           //display current score on screen
        $('.score h2').text('Score: '+this.score);
    },

    keepScore: function(){                              //keep the score

        var multiplier=0;

        switch(this.difficulty)                         //choose points modifier based on difficulty
        {
            case '2':
                multiplier=1;
                break;

            case '1':
                multiplier=2;
                break;

            case '0.5':
                multiplier = 3;
                break;

            case '0.25':
                multiplier = 4;
                break;
        }

        this.score += (1 * multiplier);                 //work out the score

        this.displayScore();                            //display score on screen
    },

    incorrectSequence: function(){                      //if user makes a mistake

        //Stop counting down timer and display start message
        clearInterval(this.timerInterval);
        $(".Timer p").html("Get Ready your time starts when you click start");

        var corPad = this.genSequence[this.turn],       //cache the pad number that should have been pressed

            that = this;
            this.active=false;
            this.displayLevel();
            this.displayScore();

        setTimeout(function(){                          //flash the pad 4 times that should have been pressed
            that.flash($(that.shape+corPad),4,300,corPad);
        },500);

        $('.start').show();                             //enable the start button again and allow difficulty selection again
        $('.difficulty').show();

    }

};
$(document).ready(function(){                           //document ready

    $('.start').on('mouseup', function(){               //initialise a game when the start button is clicked
        $(this).hide();
        game.difficulty = $('input[name=difficulty]:checked').val();
        $('.difficulty').hide();
        game.init();


    });


});

您可以在这里查看:JSFiddle (声音在 fiddle 中被禁用)