キラキラ (1)
////////////////////////////////////////////////////////////////////////////////
// キラキラ (1)
//
// [AS3.0] TwinkleParticlesクラスだ! (1)
// http://www.project-nya.jp/modules/weblog/details.php?blog_id=1368
////////////////////////////////////////////////////////////////////////////////
/**
* Copyright ProjectNya ( http://wonderfl.net/user/ProjectNya )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/6wyBB
*/
////////////////////////////////////////////////////////////////////////////////
// キラキラ (1)
//
// [AS3.0] TwinkleParticlesクラスだ! (1)
// http://www.project-nya.jp/modules/weblog/details.php?blog_id=1368
////////////////////////////////////////////////////////////////////////////////
package {
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
[SWF(backgroundColor="#000000", width="465", height="465", frameRate="30")]
public class Main extends Sprite {
private var particle:Particle;
private var particles:Array;
public function Main() {
//Wonderfl.capture_delay(1);
init();
}
private function init():void {
graphics.beginFill(0x000000);
graphics.drawRect(0, 0, 465, 465);
graphics.endFill();
//
particles = new Array();
stage.addEventListener(MouseEvent.MOUSE_MOVE, create, false, 0, true);
addEventListener(Event.ENTER_FRAME, update, false, 0, true);
}
private function create(evt:MouseEvent):void {
particle = new Particle();
particle.x = mouseX;
particle.y = mouseY;
addChild(particle);
particles.push(particle);
}
private function update(evt:Event):void {
for (var n:uint = 0; n < particles.length; n++) {
var particle:Particle = particles[n];
particle.update();
if (particle.life < 0) {
removeChild(particle);
particles.splice(n, 1);
particle = null;
}
}
}
}
}
//////////////////////////////////////////////////
// Particleクラス
//////////////////////////////////////////////////
import flash.display.Sprite;
import flash.filters.GlowFilter;
class Particle extends Sprite {
private var _width:uint = 12;
private var _height:uint = 18;
private var blur:uint = 8;
private static var color:uint = 0xFFFFFF;
private static var max:uint = 50;
public var life:int = max;
private static var radius:Number = 3;
private var dx:Number = 0;
private var gravity:Number = - 6;
private static var acceleration:Number = 0.8;
public function Particle(w:uint = 12, h:uint = 18, b:uint = 8) {
_width = w;
_height = h;
blur = b;
draw();
init();
}
private function init():void {
dx = Math.random()*radius*2 - radius;
}
public function update():void {
if (life < 0) return;
life --;
x += dx;
gravity += acceleration;
y += gravity;
alpha = (life/max < 0.5) ? life*2/max : 1;
blink();
}
private function blink():void {
if (life%4 == 0) {
visible = false;
} else {
visible = true;
}
}
private function draw():void {
graphics.beginFill(color);
graphics.moveTo(0, -_height/2);
graphics.curveTo(0, 0, -_width/2, 0);
graphics.curveTo(0, 0, 0, _height/2);
graphics.curveTo(0, 0, _width/2, 0);
graphics.curveTo(0, 0, 0, -_height/2);
graphics.endFill();
filters = [new GlowFilter(0xFFFF00, 1, blur, blur, 2, 3, false, false)];
}
}