Here we are again with another update. This post is in relation to the second assignment that was due a couple of weeks ago.
For this assignment I focused on lesson 3 from the book.
The main learning points to be taken away from this tutorial are: being able to change the properties of a movie clip using action script, use the ENTER_FRAME event, using variables to mane but a few.
Overall this lesson was pretty straightforward following along with the book. When it came to the suggested parts of this tutorial I must say it was harder then I thought it was going to be.
The first suggestion is to change some of the properties to some of the movie clips. For this I changed the colour of some of instruments I also changed the scale of which they grow:
function grow(e:MouseEvent):void {
instrument.scaleX += 5.1;
instrument.scaleY += 5.1;
}
function shrink(e:MouseEvent):void {
instrument.scaleX -= .2
instrument.scaleY -= .2;
}
function rotate(e:MouseEvent):void {
var spin:Tween = new Tween(instrument, “rotation”,
Elastic.easeOut, 0, 360, 5, true);
}
Above is an example of some of the changes I made. This is a relatively simple change in that all it does is change the rate in which the instruments grow. I changed it so they would go real big.
The next one I found difficult to understand. The only thing I could do was to display the rotational value of the extra star I added and to be honest I am not even sure if that is what is getting shown.
star_mc.addEventListener(MouseEvent.CLICK,rotateStar);
function rotateStar(e:MouseEvent):void {
star_mc.rotation += 5;
}
addEventListener(Event.ENTER_FRAME, starMove);
function starMove(e:Event):void {
if (star_mc.rotation -100 < stage.stageWidth) {
star_mc.rotation += 10;
info_txt.text = “The Star is spinning, dont get dizzy…ENJOY ” + (star_mc.rotation);
} else {
star_mc.rotation = 5;
}
}
The next option was to create an object that bounces off the “walls” of the stage.
var ball:Shape;
var speed:Number = 17;
var vx:Number = speed;
var vy:Number = speed;
var moveArea:Rectangle;
var ballRadius:Number = 60;
init();
function init():void
{
moveArea = new Rectangle(ballRadius, ballRadius, stage.stageWidth – ballRadius, stage.stageHeight – ballRadius);
drawBall();
addEventListener(Event.ENTER_FRAME, moveBall);
}
function moveBall(e:Event):void
{
if (ball.x < moveArea.x)
vx = speed;
else if (ball.x > moveArea.width)
vx = -speed;
if (ball.y < moveArea.y)
vy = speed;
else if (ball.y > moveArea.height)
vy = -speed;
ball.x += vx;
ball.y += vy;
}
function drawBall():void
{
ball = new Shape();
ball.graphics.beginFill(0xffffff);
ball.graphics.drawCircle(0, 0, ballRadius);
ball.x = moveArea.x + Math.random() * moveArea.width;
ball.y = moveArea.y + Math.random() * moveArea.height;
addChild(ball);
}
I was unsure about this process so I asked Google. I was able to find some instructions online in relation to creating the ball and having it bounce off the walls.
Overall as I mentioned some of these tasks I found a challenge but with a little persistence and searching I was (i hope) able to get them right.
neilarthurs 