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help me with the w3 code


wutruneef
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I copied the game code from w3 schools for a school project, however I wanted to change the turning and moving object from a red square to an image.

Now everything works fine but the image does not turn when the object turns, how do I fix this.

Here is my code:

<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<style>
canvas {
    border:1px solid #d3d3d3;
    background-color: #f1f1f1;
}
</style>
</head>
<body onload="startGame()">

<script>
var myGamePiece;

function startGame() {
    myGamePiece = new component(30, 30, "images/smiley.png", 255, 255, "image");
    myGameArea.start();
}

var myGameArea = {
    canvas : document.createElement("canvas"),
    start : function() {
        this.canvas.width = 800;
        this.canvas.height = 500;
        this.context = this.canvas.getContext("2d");
        document.body.insertBefore(this.canvas, document.body.childNodes[0]);
        this.frameNo = 0;
        this.interval = setInterval(updateGameArea, 10);
        window.addEventListener('keydown', function (e) {
            e.preventDefault();
            myGameArea.keys = (myGameArea.keys || []);
            myGameArea.keys[e.keyCode] = (e.type == "keydown");
        })
        window.addEventListener('keyup', function (e) {
            myGameArea.keys[e.keyCode] = (e.type == "keydown");
        })
    },
    stop : function() {
        clearInterval(this.interval);
    },    
    clear : function() {
        this.context.clearRect(0, 0, this.canvas.width, this.canvas.height);
    }
}

function component(width, height, color, x, y, type) {

    this.type = type;
    if (type == "image") {
        this.image = new Image();
        this.image.src = color;
    }
    this.width = width;
    this.height = height;
    this.speed = 0;
    this.angle = 0;
    this.moveAngle = 0;
    this.x = x;
    this.y = y;    
    this.update = function() {
        ctx = myGameArea.context;
        if (type == "image") {
            ctx.drawImage(this.image, 
                this.x, 
                this.y,
                this.width, this.height);
        } else {
            ctx.fillStyle = color;
            ctx.fillRect(this.width / -2, this.height / -2, this.width, this.height);
        }
        ctx.save();
        ctx.translate(this.x, this.y);
        ctx.rotate(this.angle);


        ctx.restore();    
    }
    this.newPos = function() {
        this.angle += this.moveAngle * Math.PI / 180;
        this.x += this.speed * Math.sin(this.angle);
        this.y -= this.speed * Math.cos(this.angle);
    }
}

function updateGameArea() {
    myGameArea.clear();
    myGamePiece.moveAngle = 0;
    myGamePiece.speed = 0;
    if (myGameArea.keys && myGameArea.keys[37]) {myGamePiece.moveAngle = -2; }
    if (myGameArea.keys && myGameArea.keys[39]) {myGamePiece.moveAngle = 2; }
    if (myGameArea.keys && myGameArea.keys[38]) {myGamePiece.speed= 2; }
    if (myGameArea.keys && myGameArea.keys[40]) {myGamePiece.speed= -2; }
    myGamePiece.newPos();
    myGamePiece.update();
}
</script>

<p></p>

</body>
</html>

I very appreciate the help!

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