ParticleEffect (2)
重い？
/**
* Copyright ProjectNya ( http://wonderfl.net/user/ProjectNya )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/nZRn
*/
////////////////////////////////////////////////////////////////////////////////
// ParticleEffect (2)
////////////////////////////////////////////////////////////////////////////////
package {
import flash.display.Sprite;
import flash.display.StageScaleMode;
import flash.display.StageAlign;
import flash.events.Event;
import flash.geom.Rectangle;
import net.hires.debug.Stats;
[SWF(backgroundColor="#000000", width="465", height="465", frameRate="30")]
public class Main extends Sprite {
private var effect:ParticleEffect;
public function Main() {
//Wonderfl.capture_delay(1);
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
init();
addChild(new Stats());
}
private function init():void {
graphics.beginFill(0x000000);
graphics.drawRect(0, 0, 465, 465);
graphics.endFill();
//
var label:Label = new Label(200, 40, 40, Label.CENTER);
addChild(label);
label.x = 132;
label.y = 202;
label.alpha = 0.4;
label.textColor = 0xFFFFFF;
label.text = "wonderfl";
//
var rect:Rectangle = new Rectangle(-232, -232, 464, 464);
var area:Rectangle = new Rectangle(-200, -20, 400, 40);
effect = new ParticleEffect(rect, area);
addChild(effect);
effect.x = 232;
effect.y = 232;
effect.start(12, 200);
}
}
}
//////////////////////////////////////////////////
// ParticleEffectクラス
//////////////////////////////////////////////////
import flash.display.Sprite;
import flash.display.BitmapData;
import flash.display.Bitmap;
import flash.events.Event;
import flash.utils.Timer;
import flash.events.TimerEvent;
import flash.geom.Rectangle;
import flash.geom.Matrix;
import flash.geom.ColorTransform;
import flash.display.BlendMode;
class ParticleEffect extends Sprite {
private var rect:Rectangle;
private var bitmapData:BitmapData;
private var bitmap:Bitmap;
private var area:Rectangle;
private var particles:Array;
private var id:uint = 0;
private var timer:Timer;
private static var unit:uint = 10;
private static var interval:uint = 200;
public function ParticleEffect(r:Rectangle, a:Rectangle) {
rect = r;
area = a;
init();
}
private function init():void {
bitmapData = new BitmapData(rect.width, rect.height, true, 0x00000000);
bitmap = new Bitmap(bitmapData);
addChild(bitmap);
bitmap.x = rect.x;
bitmap.y = rect.y;
particles = new Array();
}
public function start(u:uint, i:uint = 200):void {
unit = u;
interval = i;
timer = new Timer(interval);
timer.addEventListener(TimerEvent.TIMER, create, false, 0, true);
timer.start();
addEventListener(Event.ENTER_FRAME, update, false, 0, true);
}
public function stop():void {
timer.stop();
}
private function create(evt:TimerEvent):void {
var position:int = 0;
var distance:uint = 0;
for (var n:uint = 0; n < unit; n++) {
var particle:Particle = new Particle();
particle.id = id;
if (id < area.height) {
position = area.x + (area.width/area.height)*id;
distance = area.height;
} else {
position = 0;
distance = area.width;
}
particle.x = position + distance*(Math.random() - 0.5);
particle.y = area.height*(Math.random() - 0.5);
particle.scale = 0.4 + 0.6*Math.random();
particle.dx = 2*(Math.random() - 0.5);
particle.dy = 4*(Math.random() - 0.5);
particles.push(particle);
id ++;
}
}
private function update(evt:Event):void {
bitmapData.lock();
bitmapData.fillRect(bitmapData.rect, 0x00000000);
for (var n:uint = 0; n < particles.length; n++) {
var particle:Particle = particles[n];
if (particle) {
particle.update();
var matrix:Matrix = new Matrix();
matrix.scale(particle.scale, particle.scale);
matrix.translate(particle.x - rect.x, particle.y - rect.y);
var colorTrans:ColorTransform = new ColorTransform();
colorTrans.alphaMultiplier = particle.alpha;
bitmapData.draw(particle, matrix, colorTrans, BlendMode.LAYER, null, true);
if (particle.life < 0) {
particles.splice(0, 1);
particle = null;
}
}
}
bitmapData.unlock();
}
}
//////////////////////////////////////////////////
// Particleクラス
//////////////////////////////////////////////////
import flash.display.Sprite;
import flash.geom.Matrix;
import flash.display.GradientType;
import flash.display.SpreadMethod;
import flash.display.InterpolationMethod;
class Particle extends Sprite {
public var id:uint;
private static var radius:uint = 5;
private static var bColor:uint = 0xFFFFFF;
public var dx:Number = 0;
public var dy:Number = 0;
private static var acceleration:Number = 1.05;
public var life:Number = 1;
private static var deceleration:Number = 0.02;
private var _scale:Number = 1;
public function Particle() {
draw();
}
private function draw():void {
var colors:Array = [bColor, bColor];
var alphas:Array = [1, 0];
var ratios:Array = [0, 255];
var matrix:Matrix = new Matrix();
matrix.createGradientBox(radius*2, radius*2, 0, -radius, -radius);
graphics.beginGradientFill(GradientType.RADIAL, colors, alphas, ratios, matrix, SpreadMethod.PAD, InterpolationMethod.RGB, 0);
graphics.drawCircle(0, 0, radius);
graphics.endFill();
alpha = 0;
}
public function update():void {
x += dx*acceleration;
y += dy*acceleration;
life -= deceleration;
alpha = (1 - life < 0.5) ? (1 - life)*2 : life*2;
}
public function get scale():Number {
return _scale;
}
public function set scale(param:Number):void {
_scale = param;
scaleX = scaleY = _scale;
}
}
//////////////////////////////////////////////////
// Labelクラス
//////////////////////////////////////////////////
import flash.display.Sprite;
import flash.text.TextField;
import flash.text.TextFieldType;
import flash.text.TextFieldAutoSize;
import flash.text.AntiAliasType;
import flash.text.TextFormat;
import flash.text.TextFormatAlign;
class Label extends Sprite {
private var txt:TextField;
private static var fontType:String = "_ゴシック";
private var _width:uint = 20;
private var _height:uint = 20;
private var size:uint = 12;
public static const LEFT:String = TextFormatAlign.LEFT;
public static const CENTER:String = TextFormatAlign.CENTER;
public static const RIGHT:String = TextFormatAlign.RIGHT;
public function Label(w:uint, h:uint, s:uint = 12, align:String = LEFT) {
_width = w;
_height = h;
size = s;
draw(align);
}
private function draw(align:String):void {
txt = new TextField();
addChild(txt);
txt.width = _width;
txt.height = _height;
txt.autoSize = align;
txt.type = TextFieldType.DYNAMIC;
txt.selectable = false;
//txt.embedFonts = true;
//txt.antiAliasType = AntiAliasType.ADVANCED;
var tf:TextFormat = new TextFormat();
tf.font = fontType;
tf.size = size;
tf.align = align;
txt.defaultTextFormat = tf;
textColor = 0x000000;
}
public function set text(param:String):void {
txt.text = param;
}
public function set textColor(param:uint):void {
txt.textColor = param;
}
}