FireWorks
/**
* Copyright mrgrotesque ( http://wonderfl.net/user/mrgrotesque )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/5899
*/
package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.GradientType;
import flash.display.Shape;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.filters.BlurFilter;
import flash.geom.ColorTransform;
import flash.geom.Matrix;
import flash.geom.Point;
import flash.geom.Rectangle;
import flash.text.TextField;
public class Main extends Sprite
{
private var bitmap:Bitmap;
private var buffer:BitmapData;
private var black:Shape;
public function Main()
{
buffer = new BitmapData( stage.stageWidth, stage.stageHeight, false, 0 );
bitmap = new Bitmap( buffer );
addChild( bitmap );
black = new Shape();
black.graphics.beginFill( 0, 0.05 );
black.graphics.drawRect(0, 0, stage.stageWidth, stage.stageHeight );
black.graphics.endFill();
addEventListener( Event.ENTER_FRAME, enterFrame );
stage.addEventListener( MouseEvent.CLICK, click );
}
private function click(e:Event):void
{
explosion(mouseX,mouseY);
}
private function enterFrame(e:Event):void
{
for each( var v:Particle in Particle.list )
{
if ( v.waste ) continue;
v.update();
v.draw( buffer );
}
buffer.applyFilter( buffer, buffer.rect, new Point(), new BlurFilter(1.1, 1.1) );
buffer.draw( black );
}
private function explosion( x:int, y:int ):void
{
var ct:ColorTransform = new ColorTransform();
ct.color = 0xFFFFFF;
switch( Math.floor( Math.random() * 3 ) )
{
case 0: ct.redOffset = Math.random()*128+128; break;
case 1: ct.greenOffset = Math.random()*128+128; break;
case 2: ct.blueOffset = Math.random()*128+128; break;
}
var i:int = 0;
var shine:Shape = new Shape();
shine.graphics.beginGradientFill( GradientType.RADIAL, [ ct.color, ct.color ], [ 0.5, 0 ], [ 0, 255 ] );
shine.graphics.drawCircle( 0, 0, 96 );
shine.graphics.endFill();
buffer.draw( shine, new Matrix(1, 0, 0, 1, x, y) );
for (i = 0; i <50 ; i++)
{
var p:Particle = new FlickParticle();
p.x = x;
p.y = y;
p.angle = Math.random() * 360;
p.speed = Math.random() * 7;
p.colorTransform.color = ct.color;
}
for (i = 0; i <400 ; i++)
{
var par:Particle = new PixcelParticle();
par.x = x;
par.y = y;
par.angle = Math.random() * 360;
par.speed = Math.random() * 7;
par.colorTransform.color = ct.color;
}
}
public function kill():void
{
removeEventListener( Event.ENTER_FRAME, enterFrame );
removeChild( bitmap );
bitmap = null;
buffer = null;
}
}
}
import flash.geom.ColorTransform;
import flash.display.BitmapData;
class Particle
{
public static var list:Vector.<Particle> = new Vector.<Particle>();
public var x:Number = 0;
public var y:Number = 0;
public var vx:Number = 0;
public var vy:Number = 0;
public var colorTransform:ColorTransform = new ColorTransform();
public var waste:Boolean = false;
public var gravity:Number = 0.5;
public var friction:Number = 0.1;
private var _speed:Number = 0;
private var _angle:Number = 0;
public var stageWidth:int = 800;
public var stageHeight:int = 600;
public function Particle()
{
list.push( this );
}
public static function occasions():Particle
{
for each( var v:Particle in Particle.list )
{
if ( v.waste == true )
{
v.waste = false;
return v;
}
}
return new Particle();
}
public function draw( buffer:BitmapData ):void{}
public function update():void
{
x += vx;
y += vy;
y += gravity;
speed *= 1-friction;
// 画面の外に出たらゴミ扱い
if ( x < 0 || x > stageWidth || y < 0 || y > stageHeight ) waste = true;
}
public function set angle( value:Number ):void
{
_angle = value;
vx = Math.cos(angle) * speed;
vy = Math.sin(angle) * speed;
}
public function set speed( value:Number ):void
{
_speed = value;
vx = Math.cos(angle) * speed;
vy = Math.sin(angle) * speed;
}
public function get speed():Number { return _speed; }
public function get angle():Number { return _angle; }
}
class PixcelParticle extends Particle
{
private var disappearSpeed:int = 3;
override public function draw(buffer:BitmapData):void
{
// buffer.setPixel(x, y, color.value);
var ct:ColorTransform = new ColorTransform();
ct.color = buffer.getPixel(x, y);
var r:int = ct.redOffset + colorTransform.redOffset;
var g:int = ct.greenOffset + colorTransform.greenOffset;
var b:int = ct.blueOffset + colorTransform.blueOffset;
r = r > 255 ? 255 : r;
g = g > 255 ? 255 : g;
b = b > 255 ? 255 : b;
ct = new ColorTransform( 1, 1, 1, 1, r, g, b);
buffer.setPixel(x, y, ct.color);
}
override public function update():void
{
super.update();
var del:Boolean = true;
if ( colorTransform.redOffset - disappearSpeed > 0 ) { colorTransform.redOffset -= disappearSpeed; del = false; }
if ( colorTransform.greenOffset - disappearSpeed > 0 ) { colorTransform.greenOffset -= disappearSpeed; del = false; }
if ( colorTransform.blueOffset - disappearSpeed > 0 ) { colorTransform.blueOffset -= disappearSpeed; del = false; }
if ( del ) waste = true;
}
}
class FlickParticle extends Particle
{
override public function draw(buffer:BitmapData):void
{
if ( Math.floor( Math.random() * 8) == 0 )
{
for (var i:int = -1; i <= 1; i++)
{
for (var j:int = -1; j <= 1; j++)
{
buffer.setPixel(x+i, y+j, colorTransform.color);
}
}
}
// 適当に消す
if ( Math.floor( Math.random() * 64) == 0 ) waste = true;
}
}