AS3关于飘金币的特效
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package com.upupgame.utils
{
import com.greensock.*;
import com.greensock.easing.Quint;
import com.upupgame.baccarat.audio.SoundBiz;
import com.upupgame.baccarat.player2.assets.MainAssets;
import flash.display.MovieClip;
import flash.geom.Matrix;
import flash.geom.Point;
import hs.framework.utils.delay;
public class CoinsEmitter
{
// private static var X:Number;
// private static var Y:Number;
private static var startLocation : Point;
private static var nodeLocation : Point;
private static var endLocation : Point;
private static var num : Number;
private static var count : uint = 0;
public function CoinsEmitter()
{
}
// public static function StartShoot(num:Number,start : Point,node:Point,end:Point = null):void{
public static function StartShoot(num:Number,start : Point,end:Point = null,postion : uint = 2):void{
count = 0;
CoinsEmitter.startLocation = start;
// CoinsEmitter.nodeLocation = node;
if(end != null ){
CoinsEmitter.endLocation = end;
}else{
CoinsEmitter.endLocation = new Point(50,20);
}
var $node : Point = new Point();
var $maxX : int = 0;
var $maxY : int = 0;
var $minX : int = 0;
var $minY : int = 0;
if(start.x < CoinsEmitter.endLocation.x ){
$maxX = CoinsEmitter.endLocation.x;
$minX = start.x;
}else{
$minX = CoinsEmitter.endLocation.x;
$maxX = start.x;
}
if(start.y < CoinsEmitter.endLocation.y){
$maxY = CoinsEmitter.endLocation.y;
$minY = start.y;
}else{
$minY = CoinsEmitter.endLocation.y;
$maxY = start.y;
}
switch(postion){
case 0:
$node.x = $maxX;
$node.y = $maxY - ($maxX - $minX)/4;
break;
case 1:
$node.x = $minX;
$node.y = ($maxX - $minX)/4 + $minY;
break;
case 2:
$node.x = $minX;
// $node.y = (5*$maxY + $minY)/4;
$node.y = (15*$maxY + 16*$minY)/16;
break;
case 3:
$node.x = $maxX;
// $node.y = (3*$minY - $maxY)/4;
$node.y = ($maxY + 15*$minY)/16;
break;
default:
$node.x = $minX;
$node.y = (15*$maxY + 16*$minY)/16;
break;
}
CoinsEmitter.nodeLocation = $node;
CoinsEmitter.num = num;
// var len:int = num / 500;
if (num < 20){
num = 20;
}else if (num > 50){
num = 50;
}
GameMain.soundManager.play(SoundBiz.FLY_CHIP);
for (var i:int = 0; i < num; i+=1){
delay((_getRandom(0, 1) * 1000), delayShoot);
}
function delayShoot():void
{
var mDot:MovieClip;
if(_getRandom(0,num) <= num/7){
mDot = getFlash();
}else{
mDot = _getNewDot();
}
GameMain.instance.layers.chat.addChild(mDot);
_tweenDot(mDot, 0);
}
}
private static function _tweenDot(dot:MovieClip, dt:Number):void{
var $note : Point = new Point();
$note.x = CoinsEmitter.nodeLocation.x + _getRandom(-CoinsEmitter.num*2.5,CoinsEmitter.num*2.5);
$note.y = CoinsEmitter.nodeLocation.y + _getRandom(-CoinsEmitter.num*2.5,CoinsEmitter.num*2.5);
TweenLite.to(dot, 2, {bezier:[{x:$note.x, y:$note.y}, {x:CoinsEmitter.endLocation.x, y:CoinsEmitter.endLocation.y}], scaleX : dot.scaleX*0.8,
scaleY : dot.scaleY*0.8
,orientToBezier:true,
ease:Quint.easeInOut,delay: dt,onComplete: firstTweenComplete, onCompleteParams: [dot]});
function firstTweenComplete(dot:MovieClip):void{
if (dot)
{
if (dot.parent)
{
dot.parent.removeChild(dot);
}
dot = null;
}
if( ++ count >= num){
if(startLocation != null)startLocation = null;
if(nodeLocation != null)nodeLocation = null;
if(endLocation != null )endLocation = null;
count = 0;
}
}
}
private static function _getNewDot():MovieClip{
var num:int = int(_getRandom(1,4));
var mCoin:MovieClip = new (com.upupgame.baccarat.player2.assets.MainAssets["Coins" + num])() as MovieClip;
var $scale : Number = _getRandom(0.2,0.5);
var $myMatrix : Matrix = new Matrix($scale,_getRandom(-Math.PI/9,Math.PI/9),_getRandom(-Math.PI/10,Math.PI/10),$scale,
CoinsEmitter.startLocation.x + _getRandom(-50,50)
,CoinsEmitter.startLocation.y + _getRandom(-50,50)
);
mCoin.transform.matrix = $myMatrix;
mCoin.alpha = _getRandom(5,10)/10;
mCoin.gotoAndPlay(_getRandom(3,9));
return mCoin;
}
private static function getFlash() : MovieClip{
var $myFlash : MovieClip = new (com.upupgame.baccarat.player2.assets.MainAssets["CoinFlash"]) as MovieClip;
var $scale : Number = _getRandom(0.3,0.6);
var $myMatrix : Matrix = new Matrix($scale,_getRandom(-Math.PI/8,Math.PI/8),_getRandom(-Math.PI/8,Math.PI/8),$scale,
CoinsEmitter.startLocation.x + _getRandom(-50,50)
,CoinsEmitter.startLocation.y + _getRandom(-50,50)
);
$myFlash.transform.matrix = $myMatrix;
$myFlash.alpha = _getRandom(5,10)/10;
$myFlash.gotoAndPlay(_getRandom(1,50));
return $myFlash;
}
private static function _getRandom(min:Number, max:Number):Number{
return min + (Math.random() * (max - min));
}
}
}做一个解释:
①:此瓢金币的效果使用的是贝塞尔曲线.
②:为了得到贝塞尔曲线的效果,至少需要3个点(你懂得),中间的曲线点是由此类(上)来自动计算的.并且,每个中间点都做了一个随机的偏移.
③:此类(上)对金币由"_getNewDot()"获得,对星星由"getFlash()"获得,都做了矩阵的变形,类外其透明度也做了一个渐变的处理(越来越透明)
④:对于瓢金币(包括星星)的起始位置也做了偏移
⑤:加了一个瓢金币的音乐,当然读者要测试的话,还需知己写一个音乐管理器.当然,也可以去掉音乐.
⑥:效果很不错哦.
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