forked from: 火炎放射。
...
@author hoge
40フレごとに大炎。
クリックで中炎。
ドラッグで小炎。
/**
* Copyright signedvoid ( http://wonderfl.net/user/signedvoid )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/ipDS
*/
// forked from hogemaruo's 火炎放射。
package
{
/**
* ...
* @author hoge
* 40フレごとに大炎。
* クリックで中炎。
* ドラッグで小炎。
*/
import flash.display.Sprite;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.filters.DisplacementMapFilter;
import flash.geom.Point;
import flash.geom.Matrix;
import flash.display.GradientType;
import flash.geom.Rectangle;
import flash.geom.ColorTransform;
[SWF( width=465,height=465,frameRate=12)]
public class FlameBreath extends Sprite
{
private const ZERO_POINT:Point = new Point(0, 0);
public function FlameBreath()
{
const SW:int = stage.stageWidth;
const SH:int = stage.stageHeight;
var cnt:int = 0;
var buf:BitmapData = new BitmapData(SW, SH, true, 0xff000000);
var bmp:Bitmap = new Bitmap( buf.clone() );
var fl:DisplacementMapFilter = createNoiseDisplaceFilter(SW / 2, SH);
var ar:Array = new Array();
var arNext:Array = new Array();
var bx:int = stage.stageWidth / 2;
var by:int = stage.stageHeight / 2;
var sprFire:Sprite = createFireGradient();
var press:Boolean = false;
var hUp:int = 2;
var tmp:BitmapData = new BitmapData( fl.mapBitmap.width, hUp);
var ct:ColorTransform = new ColorTransform( 0.9, 0.75, 0.75 );
addChild( bmp );
var mat:Matrix = new Matrix();
var fire:Function = function(x:Number, y:Number, tx:Number, ty:Number, cnt:Number,sz:Number = 0.1,dl:int = 0 ):void {
var dx:Number = tx-bx;
var dy:Number = ty-by;
var len:Number = Math.sqrt( dx * dx + dy * dy);
if ( len != 0 ) {
dx = 30 * dx / len;
dy = 30 * dy / len;
}
ar.push( [x + Math.random() * 5,y + Math.sin( cnt * Math.PI/4)*5, sz,0.04 + Math.random() * 0.04,dx,dy,cnt,dl]);
};
stage.addEventListener( Event.ENTER_FRAME, function( e:Event ):void {
cnt++;
buf.colorTransform( buf.rect, ct);
arNext = new Array();
for each( var o:Array in ar ) {
for ( var i:int = 0; i < 3; i++ ){
if ( o[7] > 0 ) {
o[7]--;
continue;
}
mat.identity();
mat.translate( -sprFire.width / 2, -sprFire.height / 2);
mat.scale( o[2], o[2] );
mat.translate( o[0], o[1]);
buf.draw( sprFire, mat, null, "add" );
o[0] += o[4];
o[1] += o[5];
o[2] += o[3];
o[6]--;
if ( o[6] < 0 ) {
break;
}
}
if ( o[6] > 0 ) {
arNext.push( o );
}
}
tmp.copyPixels( fl.mapBitmap, tmp.rect, ZERO_POINT);
fl.mapBitmap.scroll(0, -hUp);
fl.mapBitmap.copyPixels( tmp, tmp.rect, new Point(0, fl.mapBitmap.height-hUp));
bmp.bitmapData.applyFilter(buf, buf.rect, ZERO_POINT, fl);
ar = arNext;
if ( !press && ( cnt % 30 ) == 0) {
var len:int = 20 + Math.random() * 4;
fire( bx,by,SW/2,SH/2,len*0.5, (Math.random()*1+1), 0 );
fire( bx,by,SW/2,SH/2,len, 0.1, 6*1 );
fire( bx,by,SW/2,SH/2,len, 0.1, 6*2 );
fire( bx,by,SW/2,SH/2,len, 0.1, 6*3 );
fire( bx,by,SW/2,SH/2,len, 0.05, 6*3+10 );
fire( bx,by,SW/2,SH/2,len*0.25, 0.1, 6*3+20 );
}
});
stage.addEventListener(MouseEvent.MOUSE_DOWN, function( e:MouseEvent):void {
press = true;
fire( bx, by, SW / 2, SH / 2, 10 + Math.random() * 4, 0.05);
cnt = 0;
});
stage.addEventListener(MouseEvent.MOUSE_UP, function( e:MouseEvent):void {
press = false;
});
stage.addEventListener(MouseEvent.MOUSE_MOVE, function( e:MouseEvent):void {
bx = mouseX;
by = mouseY;
if(press){
fire( bx,by,bx,by,1,0.25);
}
});
}
private function createFireGradient():Sprite {
var sh:Sprite = new Sprite();
var colors:Array = [0xffffff,0xffff00,0xff8000,0x802000,0x402000];
var alphas:Array = [1, 1, 1, 1, 0];
var ratios:Array = [30,70,90,100,255];
var matrix:Matrix = new Matrix();
matrix.createGradientBox(256, 256, 0, 0, 0);
sh.graphics.beginGradientFill(GradientType.RADIAL,colors,alphas,ratios, matrix);
sh.graphics.drawRect(0, 0, 256, 256);
sh.graphics.endFill();
return sh;
}
private function createNoiseDisplaceFilter(w:int,h:int):DisplacementMapFilter {
var bbuf:BitmapData = new BitmapData( w, h );
bbuf.perlinNoise( 80, 80, 5, Math.random() * 0xffff, true, true, 2 | 4);
var fl:DisplacementMapFilter = new DisplacementMapFilter(bbuf, ZERO_POINT, 2, 4, 100, 100, "clamp");
return fl;
}
}
}