Space Comet
/**
* Copyright Hasufel ( http://wonderfl.net/user/Hasufel )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/6Di1
*/
package {
import flash.display.Sprite;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.display.StageQuality;
import flash.events.Event;
import flash.filters.BlurFilter;
import flash.geom.Point;
import flash.geom.Rectangle;
import net.hires.debug.Stats;
[SWF(width=465, height=465, backgroundColor=0x000000, frameRate=60)]
public class spaceComet extends Sprite {
private var cvs:BitmapData;
private var particles:Array = [];
private var stars:Array = [];
private var cols:Array = [0xffffffff,0xffffcdff,0xffbebebe,0xffc7c7c7,0xffaaaaaa];
private var h:int = stage.stageHeight;
private var w:int = stage.stageWidth;
private var w2:int = Math.round(w/2);
private var h2:int = Math.round(h/2);
private var c:uint = 0xffffcc00;
private var theta:Number = 0;
private var blur:BlurFilter;
public function spaceComet(){
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
stage.quality = StageQuality.LOW;
var blackBg:Bitmap = new Bitmap(new BitmapData(465,465,false,0x000000));
addChild(blackBg);
addChild(new Stats());
blur = new BlurFilter(14,14,1);
cvs = new BitmapData(w,h,true,0);
addChild(new Bitmap(cvs)) as Bitmap;
addEventListener(Event.ENTER_FRAME,update);
}
private function update(e:Event):void{
cvs.applyFilter(cvs,cvs.rect,new Point(0,0),blur);
cvs.lock();
var n:int = particles.length;
while(n--) {
var p:Particle = particles[n];
p.vx*=1.1;
p.vy*=1.1;
p.x+=p.vx;
p.y+=p.vy;
cvs.setPixel32(p.x,p.y,p.c);
if (p.y<0 || p.y>h || p.x<0 || p.x>w){
particles.splice(n,1);
}
}
var o:int = stars.length;
while(o--) {
var s:Particle = stars[o];
s.x+=s.vx*=1.03;
s.y+=s.vy*=1.03;
cvs.setPixel32(s.x,s.y,s.c);
if (s.y<0 || s.y>h || s.x<0 || s.x>w){
stars.splice(o,1);
}
}
cvs.unlock();
n = 100;
while (n--) {
createParticle(w2,h2,c,Math.cos(theta)+.8*Math.random()-.1,Math.sin(theta)+.8*Math.random()-.1,true);
}
o=20;
while (o--) {
createParticle(Math.random()*w,Math.random()*h,cols[randomNumber(0,4)],Math.cos(theta)+.1*Math.random()-.1,Math.sin(theta)+.1*Math.random()-.1,false);
}
theta+=.005;
}
private function createParticle(xx:Number, yy:Number, c:int, vx:Number, vy:Number, type:Boolean):void {
var p:Particle = new Particle();
p.x = xx;
p.y = yy;
p.vx = vx;
p.vy = vy;
p.c = c;
if (type) {particles.push(p);} else {stars.push(p);}
}
private function randomNumber(low:int, high:int):int{
return Math.round(Math.random() * (high - low) + low);
}
}
}
class Particle {
public var x:Number;
public var y:Number;
public var vx:Number;
public var vy:Number;
public var c:uint;
}