// forked from sketchbookgames's forked from: Fire // forked from Saqoosha's Fire package { import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.BlendMode; import flash.display.DisplayObject; import flash.display.Loader; import flash.display.LoaderInfo; import flash.display.Sprite; import flash.display.StageQuality; import flash.display.StageScaleMode; import flash.events.Event; import flash.events.MouseEvent; import flash.filters.ColorMatrixFilter; import flash.filters.ConvolutionFilter; import flash.geom.ColorTransform; import flash.geom.Point; import flash.system.LoaderContext; import flash.net.SharedObject; import flash.net.URLRequest; import flash.text.TextField; import flash.text.TextFieldAutoSize; import flash.text.TextFormat; [SWF(width=465, height=465, backgroundColor=0x0, frameRate=30)] public class Fire extends Sprite { private static const ZERO_POINT:Point = new Point(); private var _fireColor:BitmapData; private var _currentFireColor:int; private var _canvas:Sprite; private var _grey:BitmapData; private var _spread:ConvolutionFilter; private var _cooling:BitmapData; private var _color:ColorMatrixFilter; private var _offset:Array; private var _fire:BitmapData; private var _palette:Array; private var _zeroArray:Array; public function Fire() { this.stage.scaleMode = StageScaleMode.NO_SCALE; this.stage.quality = StageQuality.LOW; var loader:Loader = new Loader(); loader.contentLoaderInfo.addEventListener(Event.COMPLETE, this._onLoaded); loader.load(new URLRequest('http://saqoosha.net/lab/Moyasu/srcview/source/fire-color.png'), new LoaderContext(true)); } private function _onLoaded(e:Event):void { this._fireColor = Bitmap(LoaderInfo(e.target).loader.content).bitmapData; this._canvas = new Sprite(); this._canvas.graphics.beginFill(0x0, 0); this._canvas.graphics.drawRect(0, 0, 465, 465); this._canvas.graphics.endFill(); this._canvas.addChild(this._createEmitter()); this._grey = new BitmapData(465, 465, false, 0x0); this._spread = new ConvolutionFilter(3, 3, [0, 1, 0, 1, 1, 1, 0, 1, 0], 5); this._cooling = new BitmapData(465, 465, false, 0x0); this._offset = [new Point(), new Point()]; this._fire = new BitmapData(465, 465, false, 0x0); this.addChild(new Bitmap(this._fire)); this._createCooling(0.16); this._createPalette(this._currentFireColor = 0); this.addEventListener(Event.ENTER_FRAME, this._update); this.stage.addEventListener(MouseEvent.CLICK, this._onClick); } private function _onClick(e:MouseEvent):void { if (++this._currentFireColor == int(this._fireColor.height / 32)) { this._currentFireColor = 0; } this._createPalette(this._currentFireColor); } private function _createEmitter():DisplayObject { var tf:TextField = new TextField(); tf.selectable = false; tf.autoSize = TextFieldAutoSize.LEFT; tf.defaultTextFormat = new TextFormat('Verdana', 60, 0xffffff, true); tf.text = 'HearthWares'; tf.x = (465 - tf.width) / 2; tf.y = (465 - tf.height) / 2; return tf; } private function _createCooling(a:Number):void { this._color = new ColorMatrixFilter([ a, 0, 0, 0, 0, 0, a, 0, 0, 0, 0, 0, a, 0, 0, 0, 0, 0, 1, 0 ]); } private function _createPalette(idx:int):void { this._palette = []; this._zeroArray = []; for (var i:int = 0; i < 256; i++) { this._palette.push(this._fireColor.getPixel(i, idx * 32)); this._zeroArray.push(0); } } private function _update(e:Event):void { this._grey.draw(this._canvas); this._grey.applyFilter(this._grey, this._grey.rect, ZERO_POINT, this._spread); this._cooling.perlinNoise(50, 50, 2, 982374, false, false, 0, true, this._offset); this._offset[0].x += 2.0; this._offset[1].y += 2.0; this._cooling.applyFilter(this._cooling, this._cooling.rect, ZERO_POINT, this._color); this._grey.draw(this._cooling, null, null, BlendMode.SUBTRACT); this._grey.scroll(0, -3); this._fire.paletteMap(this._grey, this._grey.rect, ZERO_POINT, this._palette, this._zeroArray, this._zeroArray, this._zeroArray); } } }