JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <canvas id="pageCanvas" style="display:block">
        You do not have a canvas enabled browser. 
    </canvas>
    
</body>

CSS

body{
	margin:0;
	padding:0;
	overflow:hidden;
	}

JavaScript

window.addEventListener('keydown',doKeyDown,true);
		window.addEventListener('keyup',doKeyUp,true);
		var canvas = document.getElementById('pageCanvas');
		var context = canvas.getContext('2d');
        var angle = 0;
		var H = window.innerHeight; //*0.75,
		var	W = window.innerWidth; //*0.75;
		canvas.width = W;
		canvas.height = H;
		var xc = W/2; //zeby bylo w centrum :v
		var yc = H/2; //jw.
		var x =  xc;
		var y =  yc;
        var dv = 0.2;
        var dt = 1;
		var vx = 0;
		var vy = 0;
		var fps = 30;
		var maxVel = 10;
		var frict = 0.99;
		var brakes = 0.90;
		var keys = new Array();
		var fire = false;
		var laser = false;
		///////////////////lasery xD
		var	lx = 25,
			ly = 9,
			lw = 4,
			lh = 4;
            lvx = 1;
            lvy = 1;
			
		function doKeyUp(evt){
			keys[evt.keyCode] = false;
			fire = false;
        }
		
		function doKeyDown(evt){
			keys[evt.keyCode] = true;
		}
		
		//OOOOOOOOOOOOOOOOOOLASEROOOOOOOOOOOOOOOOOOOOOOOOOOO
		function drawLaser() {
			context.fillStyle = "red";
			context.fillRect(lx,ly,lw,lh);
			
		}
		
		function moveLaser() {
			lx += lvx;
			ly += lvy;			
		}
		
		
		//OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
        function ogienZdupy(){
				context.fillStyle = "red";
				context.beginPath();
				context.moveTo(-2,2);
				context.lineTo(2,10);
				context.lineTo(-2,18);
				context.lineTo(-25,10);
				context.lineTo(-2,2);
				context.strokeStyle = "red";
				context.stroke();
			}
		
        function convertToRadians(degree) {
            return degree*(Math.PI/180);
        }

        function incrementAngle() {
            angle += 5;
			if(angle > 360){
				angle = 0;
				}
		}
		
		function decrementAngle(){
			angle -= 5;
			if(angle > 360){
				angle = 0;
				}
		}
		function xyVelocity(){
			vx += dv * Math.cos(convertToRadians(angle)); //* friction;
			vy += dv * Math.sin(convertToRadians(angle)); //* friction;
			if(vx > maxVel){
				vx = maxVel;
			}
			if(vy > maxVel){
				vy =...