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Creating a Realistic Star field effect in Flash

by Anand
In this tutorial I will show you how to createa realistic looking star field effect using actionscript in flash



1.Create a small star of your choice.
2.Give it an instance name of "star".
3.In the first frame give this actions:

numstars = 90;
speed = 6;
star_field = new Array (numstars);
//x is x axis, y is y axis, z is speed of star
 function star(x,y,speed)
{
this.x = x;
this.y = y;
this.speed = speed;
}
for (i=0;i {
star_field[i] = new star(random(400),random(200),random(speed)+1);
duplicateMovieClip ("star", "star_" add i, i+10);
}
function movestars()
{
for (i=0;i {
star_field[i].x+= star_field[i].speed;
if (star_field[i].x>400) { star_field[i].x = 0; }
setProperty ("star_" add i , _x , star_field[i].x )
setProperty ("star_" add i , _y , star_field[i].y )
setProperty ("star_" add i , _alpha , star_field[i].speed*40 )
}
}
setInterval(movestars,10);
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