Simple Maze Game Using Javascript With Source Code

Simple Maze Game Using Javascript With Source Code

The Simple Maze Game Using Javascript was developed using JavaScript, CSS and HTML, In this Simple Javascript Project With Source Code is a basic game created or built using primarily functional javascript works or parts.

A Maze Game Javascript can be quite engaging and fun for the user. Although HTML and CSS are important building blocks in web development, JavaScript is the show language that transforms websites from functional to entertaining. As a result, it’s no wonder that video games make the list.

This Javascript Project With Source Code also includes a downloadable Project With Source Code for free, just find the downloadable source code below and click to start downloading.

I have here a suggested list of Best JavaScript Projects with Source Code Free to download and I’m sure this can help you to improve your skills in JavaScript programming and web development as a whole.

To start executing a Simple Maze Game Using Javascript With Source Code,  makes sure that you have any platform in creating a JavaScript, CSS,  bootstrap, and HTML installed in your computer, in my case I will use Sublime Text.

Simple Maze Game Using Javascript With Source Code : Steps on how to create the project

The code given below is for the css module

<style>
body {
    background-color: grey;
}

canvas {
  position: absolute;
}
</style>

In this module which is the css module of the simple project.

The code given below is for the javascript module

<script>
	//Loads up the game
var w = window,
    d = document,
    e = d.documentElement,
    g = d.getElementsByTagName('body')[0];

var x = w.innerWidth || e.clientWidth || g.clientWidth,
        y = w.innerHeight || e.clientHeight || g.clientHeight;

var width = x - 16,
    height = y - 16;
    

var currentPosition; 

var N = 1 << 0, 
    S = 1 << 1,
    W = 1 << 2,
    E = 1 << 3;
 
var body = document.querySelectorAll('body');


    var layout = [],
        fronteirTest = [];
// Determines the size of the blocks 
    var cellSize = 16,
        cellSpacing = 8,
        cellWidth = Math.floor((width - cellSpacing) / (cellSize + cellSpacing)),
        cellHeight = Math.floor((height - cellSpacing) / (cellSize + cellSpacing)),
        cells = new Array(cellWidth * cellHeight), // each cell’s edge bits
        frontier = [];

    var maxY = Math.floor((height - cellSpacing) / (cellSize + cellSpacing)) - 1,
        maxX = Math.floor((width - cellSpacing) / (cellSize + cellSpacing)) - 1;


    var canvas = document.createElement('canvas');

    canvas.setAttribute("id", "canvas");
    canvas.setAttribute("width", width);
    canvas.setAttribute("height", height);

    body[0].appendChild(canvas);

    var context = canvas.getContext("2d");


    context.translate(
        Math.round((width - cellWidth * cellSize - (cellWidth + 1) * cellSpacing) / 2),
        Math.round((height - cellHeight * cellSize - (cellHeight + 1) * cellSpacing) / 2)
    );



    var canvas2 = document.createElement('canvas');

    canvas2.setAttribute("id", "canvas2");
    canvas2.setAttribute("width", width);
    canvas2.setAttribute("height", height);

    body[0].appendChild(canvas2);

    var game = canvas2.getContext("2d");

    game.translate(
        Math.round((width - cellWidth * cellSize - (cellWidth + 1) * cellSpacing) / 2),
        Math.round((height - cellHeight * cellSize - (cellHeight + 1) * cellSpacing) / 2)
    );

//color of the maze
    context.fillStyle = "#00ffff";

    // Add a random cell and two initial edges.
    var start = (cellHeight - 1) * cellWidth;
    cells[start] = 0;
    fillCell(start);
    frontier.push({
        index: start,
        direction: N
    });
    frontier.push({
        index: start,
        direction: E
    });

    // Explore the frontier until the tree spans the graph.
    function run() {
        var done, k = 0;
        while (++k < 50 && !(done = exploreFrontier()));
        return done;
    };

    function exploreFrontier() {

        if ((edge = popRandom(frontier)) == null) {
            layout.push({x: 0, y: maxY, d1: 0, d0: 0})
            for (var i = layout.length - 1; i >= 0; i--) {
              if(layout[i].x === 0 && layout[i].y === maxY) {
                drawPlayer(layout[i]);
              }
            };
            return true;
        }

        var edge,
            i0 = edge.index,
            d0 = edge.direction,
            i1 = i0 + (d0 === N ? -cellWidth : d0 === S ? cellWidth : d0 === W ? -1 : +1),
            x0 = i0 % cellWidth,
            y0 = i0 / cellWidth | 0,
            x1,
            y1,
            d1,
            open = cells[i1] == null, // opposite not yet part of the maze
            north,
            east,
            south,
            west;
// makes the maze color
        context.fillStyle = open ? "#00ffff": "transparent";
        if (d0 === N) fillSouth(i1), x1 = x0, y1 = y0 - 1, d1 = S, south = true;
        else if (d0 === S) fillSouth(i0), x1 = x0, y1 = y0 + 1, d1 = N, south = true;
        else if (d0 === W) fillEast(i1), x1 = x0 - 1, y1 = y0, d1 = E, east = true;
        else fillEast(i0), x1 = x0 + 1, y1 = y0, d1 = W, east = true;




        if (open) {
            fillCell(i1);
            cells[i0] |= d0, cells[i1] |= d1;
            context.fillStyle = "transparent";
            if (y1 > 0 && cells[i1 - cellWidth] == null) fillSouth(i1 - cellWidth), frontier.push({
                index: i1,
                direction: N
            }), south = true;
            if (y1 < cellHeight - 1 && cells[i1 + cellWidth] == null) fillSouth(i1), frontier.push({
                index: i1,
                direction: S
            }), south = true;
            if (x1 > 0 && cells[i1 - 1] == null) fillEast(i1 - 1), frontier.push({
                index: i1,
                direction: W
            }), east = true;
            if (x1 < cellWidth - 1 && cells[i1 + 1] == null) fillEast(i1), frontier.push({
                index: i1,
                direction: E
            }), east = true;
        }

        layout.push({
            open: open,
            x: x1,
            y: y1,
            d0: d0,
            d1: d1
        });
    }

    function fillCell(index) {
        var i = index % cellWidth,
            j = index / cellWidth | 0;
        context.fillRect(i * cellSize + (i + 1) * cellSpacing, j * cellSize + (j + 1) * cellSpacing, cellSize, cellSize);
    }

    function fillEast(index) {
        var i = index % cellWidth,
            j = index / cellWidth | 0;
        context.fillRect((i + 1) * (cellSize + cellSpacing), j * cellSize + (j + 1) * cellSpacing, cellSpacing, cellSize);
    }

    function fillSouth(index) {
        var i = index % cellWidth,
            j = index / cellWidth | 0;
        context.fillRect(i * cellSize + (i + 1) * cellSpacing, (j + 1) * (cellSize + cellSpacing), cellSize, cellSpacing);
    }

    function popRandom(array) {
        if (!array.length) return;
        var n = array.length,
            i = Math.random() * n | 0,
            t;
        t = array[i], array[i] = array[n - 1], array[n - 1] = t;
        return array.pop();
    }
//Changing the color and size of the balls
    function drawPlayer(position) {
        game.clearRect(0, 0, width, height);
        currentPosition = position;
        var playerX = position.x * cellSize + (position.x + 1) * cellSpacing;
        var playerY = position.y * cellSize + (position.y + 1) * cellSpacing
        var finishX = maxX * cellSize + (maxX + 1) * cellSpacing;
        var finishY = 0 * cellSize + (0 + 1) * cellSpacing
        game.beginPath();
        game.arc(finishX + (cellSize / 2), finishY + (cellSize / 2), cellSize / 2, 0, 2 * Math.PI, false);
        game.fillStyle = "green";
        game.fill();
        game.beginPath();
        game.arc(playerX + (cellSize / 2), playerY + (cellSize / 2), cellSize / 2, 0, 2 * Math.PI, false);
        game.fillStyle = "black";
        game.fill();
    }

    window.addEventListener("keydown", function(e) {

      var value = e.which;

      if(value === 37) moveWest(), e.preventDefault();
      if(value === 38) moveNorth(), e.preventDefault();
      if(value === 39) moveEast(), e.preventDefault();
      if(value === 40) moveSouth(), e.preventDefault();
     
      return false;
        
    });

    function moveWest() {
      var newY = currentPosition.y;
      var newX = currentPosition.x - 1;
      var newPosition;

      if (newX < 0) return false;

      for (var i = layout.length - 1; i >= 0; i--) {
        if(layout[i].x === newX && layout[i].y === newY) {
          newPosition = layout[i];
        }
      };

      if(newPosition.x === maxX && newPosition.y === 0) {
        gameComplete();
      }


      if (( currentPosition.d1 === W) || (newPosition.d1 === E)) {
        drawPlayer(newPosition); 
      };
    }

    function moveEast() {
      var newY = currentPosition.y;
      var newX = currentPosition.x + 1;
      var newPosition;

      if (newX > maxX) return false;

      for (var i = layout.length - 1; i >= 0; i--) {
        if(layout[i].x === newX && layout[i].y === newY) {
          newPosition = layout[i];
        }
      };

      if(newPosition.x === maxX && newPosition.y === 0) {
        gameComplete();
      }

      if (( currentPosition.d1 === E) || (newPosition.d1 === W)) {
        drawPlayer(newPosition); 
      };

      
    }

    function moveNorth() {
      var newY = currentPosition.y - 1;
      var newX = currentPosition.x;
      var newPosition;


      if (newY < 0) return false;

      for (var i = layout.length - 1; i >= 0; i--) {
        if(layout[i].x === newX && layout[i].y === newY) {
          newPosition = layout[i];
        }
      };

      if(newPosition.x === maxX && newPosition.y === 0) {
        gameComplete();
      }

      if (( currentPosition.d1 === N) || (newPosition.d1 === S)) {
        drawPlayer(newPosition); 
      };

    }

    function moveSouth() {
      var newY = currentPosition.y + 1;
      var newX = currentPosition.x;
      var newPosition;

      if (newY > maxY) return false;

      for (var i = layout.length - 1; i >= 0; i--) {
        if(layout[i].x === newX && layout[i].y === newY) {
          newPosition = layout[i];
        }
      };

      if(newPosition.x === maxX && newPosition.y === 0) {
        gameComplete();
      }

      if (( currentPosition.d1 === S) || (newPosition.d1 === N)) {
        drawPlayer(newPosition); 
      };
      
    }
//Changes the alert when you win the game
    function gameComplete() {
        alert('Wow! You won! Thats pretty neat!'); 
      }


    (function() {
        var lastTime = 0;
        var vendors = ['ms', 'moz', 'webkit', 'o'];
        for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
            window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
            window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame'] 
                                       || window[vendors[x]+'CancelRequestAnimationFrame'];
        }
     
        if (!window.requestAnimationFrame)
            window.requestAnimationFrame = function(callback, element) {
                var currTime = new Date().getTime();
                var timeToCall = Math.max(0, 16 - (currTime - lastTime));
                var id = window.setTimeout(function() { callback(currTime + timeToCall); }, 
                  timeToCall);
                lastTime = currTime + timeToCall;
                return id;
            };
     
        if (!window.cancelAnimationFrame)
            window.cancelAnimationFrame = function(id) {
                clearTimeout(id);
            };
    }());

    function animate() {
      
        requestAnimationFrame(function() {
            if(!run()) {
                animate();
            }
        });
    }

    animate();
</script>

In this module which is the javascript module of the simple project.

Project Output

Downloadable Source Code

Summary

This JavaScript Project With Source Code is simply in HTML, CSS, and JavaScript. To start creating this Simple Javascript Project With Source Code, make sure that you have basic knowledge in HTML, CSS and Javascript.

This Javascript Game Project also includes a downloadable Javascript Game Project With Source Code for free.

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