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Result Size: 625 x 571
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<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<style>
body {
    margin: 0;
}
canvas {
    border:1px solid #d3d3d3;
    background-color: #f1f1f1;
}
</style>
</head>
<body onload="startGame()">
<script>
var myGamePiece;
var myUpBtn;
var myDownBtn;
var myLeftBtn;
var myRightBtn;
​
function startGame() {
    myGamePiece = new component(30, 30, "red", 10, 120);
    myUpBtn = new component(30, 30, "blue", 50, 10);    
    myDownBtn = new component(30, 30, "blue", 50, 70);    
    myLeftBtn = new component(30, 30, "blue", 20, 40);    
    myRightBtn = new component(30, 30, "blue", 80, 40);                
    myGameArea.start();
}
​
​
var myGameArea = {
    canvas : document.createElement("canvas"),
    start : function() {
        this.canvas.width = 480;
        this.canvas.height = 270;
        this.context = this.canvas.getContext("2d");
        document.body.insertBefore(this.canvas, document.body.childNodes[0]);
        this.interval = setInterval(updateGameArea, 20);
        window.addEventListener('mousedown', function (e) {
            myGameArea.x = e.pageX;
            myGameArea.y = e.pageY;
        })
        window.addEventListener('mouseup', function (e) {
            myGameArea.x = false;
            myGameArea.y = false;
        })
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