Programs/Breakout_game.html at master · Shashank-Bhat/Programs · GitHub

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<!doctype html>
<html>
<head>
   <meta charset = "utf-8"/>
   <title>
       Breakout Game
   </title>
   <style>
      *{padding: 0;margin:0;}
      canvas{background: #eee;display:block;margin:0auto;}
   </style>
</head>
<body>
<canvas id = "Canvas" width = "800" height = "650"></canvas>
<script>
     var canvas = document.getElementById("Canvas");
     var ctx = canvas.getContext("2d");
     var x = canvas.width/2;
     var y = canvas.height-30;
     var dx = 5;
     var dy = -5;
     var paddleHeight = 10;
     var paddleWidth = 55;
     var paddleX = (canvas.width - paddleWidth)/2;
     var right = false;
     var left = false;
     var brickRow = 11;
     var brickCol = 11;
     var BrickWidth = 60;
     var BrickHeight = 15;
     var BrickPad = 10;
     var BrickOffsetTop = 30;
     var BrickOffsetLeft = 30;
     var bricks = [];
     var c;
     var r;
     var score = 0;
     var lives = 3;
     var t=1;
     for(c=0;c<brickCol;c++)
     {
        bricks[c] =[];
        for(r=0;r<brickRow;r++)
        {
          bricks[c][r] = {x:0, y:0, status: 1};
        }
     }
     document.addEventListener("keydown",keyDownHandler,false);
     document.addEventListener("keyup",keyUpHandler,false);
     function keyDownHandler(e)
     {
        if(e.keyCode == 39)
           right = true;
        else if(e.keyCode == 37)
           left = true;
     }
     function keyUpHandler(e)
     {
        if(e.keyCode == 39)
           right = false;
        else if(e.keyCode == 37)
           left = false;
     }
     function drawPaddle()
     {
        ctx.beginPath();
        ctx.rect(paddleX,canvas.height-paddleHeight,paddleWidth,paddleHeight);
        ctx.fillstyle = "red";
        ctx.fill();
        ctx.closePath();
     }
     function drawball()
     {
        ctx.beginPath();
     	ctx.arc(x, y, 7, 0,Math.PI*2,false);
     	ctx.fillStyle = "red";
     	ctx.fill();
     	ctx.closePath();
     }
     function drawbrick()
     {
       for(c=0;c<brickCol;c++)
       {
         for(r=0;r<brickRow;r++)
         {
          if(bricks[c][r].status == 1){
           var brickX = (c*(BrickWidth+BrickPad))+BrickOffsetLeft;
           var brickY = (r*(BrickHeight+BrickPad))+BrickOffsetTop;
           bricks[c][r].x = brickX;
           bricks[c][r].y = brickY;
           ctx.beginPath();
           ctx.rect(brickX,brickY,BrickWidth,BrickHeight);
           ctx.fillStyle = "red";
           ctx.fill();
           ctx.closePath();}
         }
       }
     }
     function drawScore()
     {
        ctx.font = "16px Arial";
        ctx.fillStyle = "red";
        ctx.fillText("Score: "+score, 8, 20);
    }

     function drawLives()
     {
        ctx.font = "16px Arial";
        ctx.fillStyle = "red";
        ctx.fillText("Lives: "+lives, canvas.width()-65, 20);
    }
     function colldetect()
     {
       for(c=0;c<brickCol;c++)
       {
         for(r=0;r<brickRow;r++)
         {
           var b = bricks[c][r];
           if(b.status == 1)
           {
             if(x > b.x && x < b.x+BrickWidth && y > b.y && y < b.y+BrickHeight)
             {
              dy = -dy;
              b.status = 0;
              score = score+1;
              if(score == brickRow*brickCol)
              {
                 alert("You win!!! Congratulations");
                 document.location.reload();
              }
           }
         }
       }
     }
    }
     function draw()
     {
        ctx.clearRect(0,0,canvas.width,canvas.height);
        drawbrick();
        drawPaddle();
        drawball();
        //drawscore();
        //drawLives();
        colldetect();
        if(x+dx > canvas.width-7 || x+dx < 7)
           dx = -dx;
        if(y+dy < 7)
           dy = -dy;
        else if(y+dy >canvas.height-7)
        {
           if(x>paddleX && x<paddleX+paddleWidth)
             dy = -dy;
           else
           {
             lives--;
             t=t+1;
             if(!lives)
             {
                alert("GAME OVER");
                document.location.reload();
             }
             else
             {
    		x = canvas.width/2;
    		y = canvas.height-30;
    		dx = (4+(t));
    		dy = -(4+(t));
    		paddleX = (canvas.width-paddleWidth)/2;
             }
           }
        }
        if(right && paddleX < canvas.width-paddleWidth)
            paddleX+=7;
        else if(left && paddleX >0)
            paddleX-=7;
        x+=dx;
        y+=dy;
        requestAnimationFrame(draw);
     }
     draw();
</script>
</body>
</html>