cssAudio - ActiveCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - Activehtmlicon-personicon-teamoctocatspinnerstartv

Pen Settings

CSS Base

Vendor Prefixing

Add External CSS

These stylesheets will be added in this order and before the code you write in the CSS editor. You can also add another Pen here, and it will pull the CSS from it. Try typing "font" or "ribbon" below.

Quick-add: + add another resource

Add External JavaScript

These scripts will run in this order and before the code in the JavaScript editor. You can also link to another Pen here, and it will run the JavaScript from it. Also try typing the name of any popular library.

Quick-add: + add another resource

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

            
                          <header class="wrap">
                <h1>Snake</h1>
                <p class="score">Score: <span id="score_value">0</span></p>
            </header>
            <canvas class="wrap" id="snake" width="320" height="320" tabindex="1"></canvas>
        
            <!-- Game Over Screen -->
            <div id="gameover">
                <h2>Game Over</h2>
                <p>press <span style="background-color: #FFFFFF; color: #000000">space</span> to begin a</p>
                <a id="newgame_gameover">new game</a>
                <a id="setting_gameover">settings</a>
            </div>
        
            <!-- Setting screen -->
            <div id="setting">
                <h2>Settings</h2>
                
                <a id="newgame_setting">new game</a>
                
                <p>Speed:
                    <input id="speed1" type="radio" name="speed" value="120" checked/>
                    <label for="speed1">Slow</label>
                    <input id="speed2" type="radio" name="speed" value="75"/>
                    <label for="speed2">Normal</label>
                    <input id="speed3" type="radio" name="speed" value="35"/>
                    <label for="speed3">Fast</label>
                </p>
                
                <p>Wall:
                    <input id="wallon" type="radio" name="wall" value="1" checked/>
                    <label for="wallon">On</label>
                    <input id="walloff" type="radio" name="wall" value="0"/>
                    <label for="walloff">Off</label>
                </p>

            </div>
        
            <!-- Main Menu Screen -->
            <div id="menu">
                <h2>Snake</h2>

                <a id="newgame_menu">new game</a>
                <a id="setting_menu">settings</a>
            </div>

            <!--
            <div id="debug" style="font-size: 16px; color: #FFF;"></div>
            -->
            
          
!
            
                          @import url("https://fonts.googleapis.com/css?family=VT323");
            
            ::selection {color:#FFFFFF; background:transparent;}
            ::-moz-selection {color:#FFFFFF; background:transparent;}
            
            *{
                margin: 0;
                padding: 0;
                font-family: "VT323";
            }
            body{
                background-color: #000000;
            }
            .wrap{
                margin-left: auto;
                margin-right: auto;
            }
            header{
                width: 340px;
                font-size: 0;
            }
            canvas{
                display: none;
                border-style: solid;
                border-width: 10px;
                border-color: #FFFFFF;
            }
            canvas:focus{
                outline: none;
            }
            
            /* Top Styles */
            h1{
                display: inline-block;
                width: 100px;
                font-size: 32px;
                color: #FFFFFF;
            }
            .score{
                display: inline-block;
                width: 240px;
                font-size: 20px;
                color: #FFFFFF;
                text-align: right;
            }
            .score_value{
                font-size: inherit;
            }
            
            
            
            /* All screens style */
            #gameover a, #setting a, #menu a{
                display: block;
            }
       
            #gameover a, #setting a:hover, #menu a:hover{
                cursor: pointer;
            }
            
            #gameover a:hover::before, #setting a:hover::before, #menu a:hover::before{
                content: ">";
                margin-right: 10px;
            }
            
            /* Menu Screen Style */
            #menu{
                display: block;
                width: 340px;
                padding-top: 95px;
                padding-bottom: 95px;
                font-size: 40px;
                margin-left: auto;
                margin-right: auto;
                text-align: center;
                color: #FFF;
            }
            
            #menu h2{
                -webkit-animation: logo-ani 1000ms linear infinite;
                        animation: logo-ani 1000ms linear infinite;
                margin-bottom: 30px;
                
            }
            
            #menu a{
                font-size: 30px;
            }
            
            @-webkit-keyframes logo-ani{
               50%{-webkit-transform: scale(1.3,1.3);}
              100%{-webkit-transform: scale(1.0,1.0);}
            }

            @keyframes logo-ani{
               50%{transform: scale(1.3,1.3);}
              100%{transform: scale(1.0,1.0);}
            }
            
            
            /* Game Over Screen Style */
            
            #gameover{
                display: none;
                width: 340px;
                padding-top: 95px;
                padding-bottom: 95px;
                margin-left: auto;
                margin-right: auto;
                text-align: center;
                font-size: 30px;
                color: #FFF;
            }
            
            #gameover p{
                margin-top: 25px;
                font-size: 20px;
            }
            
            /* Settings Screen Style */
            #setting{
                display: none;
                width: 340px;
                margin-left: auto;
                margin-right: auto;
                padding-top: 85px;
                padding-bottom: 85px;
                font-size: 30px;
                color: #FFF;
                text-align: center;
            }
            
            #setting h2{
                margin-bottom: 15px;
            }
            
            #setting p{
                margin-top: 10px;
            }
            
            #setting input{
                display:none;
            }
            
            #setting label{
                cursor: pointer;
            }
            
            #setting input:checked + label{
                background-color: #FFF;
                color: #000;
            }
            
          
!
            
              (function(){  
    /////////////////////////////////////////////////////////////
    
    // Canvas & Context
    var canvas;
    var ctx;
    
    // Snake
    var snake;
    var snake_dir;
	 var snake_next_dir;
    var snake_speed;
    
    // Food
    var food = {x: 0, y: 0};
    
    // Score
    var score;
    
    // Wall
    var wall;
    
    // HTML Elements
    var screen_snake;
    var screen_menu;
    var screen_setting;
    var screen_gameover;
    var button_newgame_menu;
    var button_newgame_setting;
    var button_newgame_gameover;
    var button_setting_menu;
    var button_setting_gameover;
    var ele_score;
    var speed_setting;
    var wall_setting;
    
    /////////////////////////////////////////////////////////////

    var activeDot = function(x, y){
        ctx.fillStyle = "#FFFFFF";
        ctx.fillRect(x * 10, y * 10, 10, 10);
    }
    
    
    /////////////////////////////////////////////////////////////

    var changeDir = function(key){
        
        if(key == 38 && snake_dir != 2){
            snake_next_dir = 0;
        }else{
        
        if (key == 39 && snake_dir != 3){
            snake_next_dir = 1;
        }else{
        
        if (key == 40 && snake_dir != 0){
            snake_next_dir = 2;
        }else{
            
        if(key == 37 && snake_dir != 1){
            snake_next_dir = 3;
        } } } }
        
    }
    
    /////////////////////////////////////////////////////////////

    var addFood = function(){
        food.x = Math.floor(Math.random() * ((canvas.width / 10) - 1));
        food.y = Math.floor(Math.random() * ((canvas.height / 10) - 1));
        for(var i = 0; i < snake.length; i++){
            if(checkBlock(food.x, food.y, snake[i].x, snake[i].y)){
                addFood();
            }
        }
    }
    
    /////////////////////////////////////////////////////////////

    var checkBlock = function(x, y, _x, _y){
        return (x == _x && y == _y) ? true : false;
    }
    
    /////////////////////////////////////////////////////////////
    
    var altScore = function(score_val){
        ele_score.innerHTML = String(score_val);
    }
    
    /////////////////////////////////////////////////////////////

    var mainLoop = function(){
        
            var _x = snake[0].x;
            var _y = snake[0].y;
			snake_dir = snake_next_dir;

            // 0 - Up, 1 - Right, 2 - Down, 3 - Left
            switch(snake_dir){
                case 0: _y--; break;
                case 1: _x++; break;
                case 2: _y++; break;
                case 3: _x--; break;
            }

            snake.pop();
            snake.unshift({x: _x, y: _y});

        
        // --------------------

        // Wall
        
            if(wall == 1){
            // On
                if (snake[0].x < 0 || snake[0].x == canvas.width / 10 || snake[0].y < 0 || snake[0].y == canvas.height / 10){
                    showScreen(3);
                    return;
                }
            }else{
            // Off
                for(var i = 0, x = snake.length; i < x; i++){
                    if(snake[i].x < 0){
                        snake[i].x = snake[i].x + (canvas.width / 10);
                    }
                    if(snake[i].x == canvas.width / 10){
                        snake[i].x = snake[i].x - (canvas.width / 10);
                    }
                    if(snake[i].y < 0){
                        snake[i].y = snake[i].y + (canvas.height / 10);
                    }
                    if(snake[i].y == canvas.height / 10){
                        snake[i].y = snake[i].y - (canvas.height / 10);
                    }
                }
            }
        
        // --------------------
    
        // Autophagy death
            for(var i = 1; i < snake.length; i++){
                if (snake[0].x == snake[i].x && snake[0].y == snake[i].y){
                    showScreen(3);
                    return;
                }
            }
      
        // --------------------
        
      // Eat Food
            if(checkBlock(snake[0].x, snake[0].y, food.x, food.y)){
                snake[snake.length] = {x: snake[0].x, y: snake[0].y};
                score += 1;
                altScore(score);
                addFood();
                activeDot(food.x, food.y);
            }
        
        // --------------------

            ctx.beginPath();
            ctx.fillStyle = "#000000";
            ctx.fillRect(0, 0, canvas.width, canvas.height);
        
        // --------------------

            for(var i = 0; i < snake.length; i++){
                activeDot(snake[i].x, snake[i].y);
            }
        
        // --------------------

            activeDot(food.x, food.y);
        
		// Debug
		//document.getElementById("debug").innerHTML = snake_dir + " " + snake_next_dir + " " + snake[0].x + " " + snake[0].y;		

            setTimeout(mainLoop, snake_speed);
    }
    
    /////////////////////////////////////////////////////////////

    var newGame = function(){
        
        showScreen(0);
        screen_snake.focus();
      
        snake = [];
        for(var i = 4; i >= 0; i--){
            snake.push({x: i, y: 15});
        }
      
        snake_next_dir = 1;
        
        score = 0;
        altScore(score);
        
        addFood();
        
        canvas.onkeydown = function(evt) {
            evt = evt || window.event;
            changeDir(evt.keyCode);
        }
        mainLoop();
                
    }
    
    /////////////////////////////////////////////////////////////
    
    // Change the snake speed...
    // 150 = slow
    // 100 = normal
    // 50 = fast
    var setSnakeSpeed = function(speed_value){
        snake_speed = speed_value;
    }
    
    /////////////////////////////////////////////////////////////
    var setWall = function(wall_value){
        wall = wall_value;
        if(wall == 0){screen_snake.style.borderColor = "#606060";}
        if(wall == 1){screen_snake.style.borderColor = "#FFFFFF";}
    }
     
    /////////////////////////////////////////////////////////////
    
    // 0 for the game
    // 1 for the main menu
    // 2 for the settings screen
    // 3 for the game over screen
    var showScreen = function(screen_opt){
        switch(screen_opt){
                
            case 0:  screen_snake.style.display = "block";
                     screen_menu.style.display = "none";
                     screen_setting.style.display = "none";
                     screen_gameover.style.display = "none";
                     break;
                
            case 1:  screen_snake.style.display = "none";
                     screen_menu.style.display = "block";
                     screen_setting.style.display = "none";
                     screen_gameover.style.display = "none";
                     break;
                
            case 2:  screen_snake.style.display = "none";
                     screen_menu.style.display = "none";
                     screen_setting.style.display = "block";
                     screen_gameover.style.display = "none";
                     break;
                
            case 3: screen_snake.style.display = "none";
                    screen_menu.style.display = "none";
                    screen_setting.style.display = "none";
                    screen_gameover.style.display = "block";
                    break;
        }
    }
        
    /////////////////////////////////////////////////////////////
        
    window.onload = function(){
        
        canvas = document.getElementById("snake");
        ctx = canvas.getContext("2d");
               
            // Screens
            screen_snake = document.getElementById("snake");
            screen_menu = document.getElementById("menu");
            screen_gameover = document.getElementById("gameover");
            screen_setting = document.getElementById("setting");
        
            // Buttons
            button_newgame_menu = document.getElementById("newgame_menu");
            button_newgame_setting = document.getElementById("newgame_setting");
            button_newgame_gameover = document.getElementById("newgame_gameover");
            button_setting_menu = document.getElementById("setting_menu");
            button_setting_gameover = document.getElementById("setting_gameover");
        
            // etc
            ele_score = document.getElementById("score_value");
            speed_setting = document.getElementsByName("speed");
            wall_setting = document.getElementsByName("wall");
        
        // --------------------

        button_newgame_menu.onclick = function(){newGame();};
        button_newgame_gameover.onclick = function(){newGame();}; 
        button_newgame_setting.onclick = function(){newGame();}; 
        button_setting_menu.onclick = function(){showScreen(2);};
        button_setting_gameover.onclick = function(){showScreen(2)};

        setSnakeSpeed(150);
        setWall(1);

        showScreen("menu");
        
        // --------------------
        // Settings
        
            // speed
            for(var i = 0; i < speed_setting.length; i++){
                speed_setting[i].addEventListener("click", function(){
                    for(var i = 0; i < speed_setting.length; i++){
                        if(speed_setting[i].checked){
                            setSnakeSpeed(speed_setting[i].value);
                        }
                    }
                });
            }
        
            // wall
            for(var i = 0; i < wall_setting.length; i++){
                wall_setting[i].addEventListener("click", function(){
                    for(var i = 0; i < wall_setting.length; i++){
                        if(wall_setting[i].checked){
                            setWall(wall_setting[i].value);
                        }
                    }
                });
            }

        document.onkeydown = function(evt){
            if(screen_gameover.style.display == "block"){
                evt = evt || window.event;
                if(evt.keyCode == 32){
                    newGame();
                }
            }
        }
    }

})();
            
          
!
999px
Close

Asset uploading is a PRO feature.

As a PRO member, you can drag-and-drop upload files here to use as resources. Images, Libraries, JSON data... anything you want. You can even edit them anytime, like any other code on CodePen.

Go PRO

Loading ..................

Console