This is a great tutorial. I was wondering if the code for the Starfield background can be modified to look like a 1st person point of view? In otherwords, we are traveling towards the stars and the stars are zooming past us?

This is terrific. Thanks very much.

Best,
Gary

The only thing I have “customized”, is the player code to get a smaller boundary for the ship to fly in.
Its really weird and frustrating to still get the message
“1136: Incorrect number of arguments. Expected 0.”

Can anybody help me?

Anyway, I have setup the stars and they are flowing rather well.

My question is, how do you get them to stop?

removeChild? If so, How does that work with multiple stars on stage at once?

If you want the Stars to go from left to right, use MrKrackham’s example above. If you want them to go from right to left, and your stars aren’t respawning, and if you’re an AS noob like me, here’s the problems.

public function setupLine(randomizeX:Boolean = false) : void
{
//inline conditional, looks complicated but it’s not.
x = randomizeX ? Math.random()*stageRef.stageWidth : 750; **has to be 750, this is where they respawn**
y = Math.random()*stageRef.stageHeight;
alpha = Math.random();
scaleX = Math.random();
scaleY = Math.random();

speed = 2 + Math.random()*2;
}

public function loop(e:Event) : void
{
x -= speed; ****has to be a minus sign, so they go left****

if (x < 0) ****this is where it got. don’t know why. it just did.****
setupLine();

}

}
}

1136:Incorrect number of arguments. Expected 0.

I tried doing that too. Just switch all occurrences of WidthHeight, xy and randomizeYrandomizeX. Seemed to work fine

package com.asgamer.basics1
{
import flash.display.MovieClip;
import flash.display.Stage;
import flash.events.Event;

public class Star extends MovieClip
{
private var stageRef:Stage;
private var speed:Number;

public function Star(stageRef:Stage)
{
this.stageRef = stageRef;
setupStar(true);

addEventListener(Event.ENTER_FRAME, loop, false, 0, true);
}

public function setupStar(randomizeX:Boolean = false) : void
{
//inline conditional, looks complicated but it’s not.
x = randomizeX ? Math.random()*stageRef.stageWidth : 0;
y = Math.random()*stageRef.stageHeight;
alpha = Math.random();
rotation = Math.random()*360;
scaleY = Math.random();
scaleX = Math.random();

speed = 2 + Math.random()*2;
}

public function loop(e:Event) : void
{
x += speed;

if (x > stageRef.stageWidth)
setupStar();
}
}
}

I am having this issue. You said it was easy, but how did you get the background to stop panning at the edge of the stage?

Thanks!

In some ways answered my own question. I forgot that I had added the background to the stage at runtime as you had suggested in Step one, so when I copied your code into my Engine.as file, I lost the background! I had forgot what I had done so at first I tried this (I have a Background.as file with an empty constructor function, which i’m guessing is all that’s needed since the background does nothing):

//add background to the stage
stage.addChild(new Background());

which brought back my background, but (as I’m sure you know) no stars!! I guessed they were covered up, so I used the addChildAt to set the level to 0:

//add background to the stage
stage.addChildAt(new Background(), 0);

and my stars are back! So I’m guessing this displayList number corresponds to the “level” of the object, similar to the layer list on the timeline (objects in layers above cover up objects below)?