package?com.brackeen.javagamebook.graphics;
//Download?by?http://www.codefans.net
import?java.awt.Image;
import?java.util.ArrayList;

public?class?Animation?{

????private?ArrayList?frames;
????private?int?currframeIndex;
????private?long?animTime;
????private?long?totalDuration;


????/**
????????Creates?a?new?empty?Animation.
????*/
????public?Animation（）?{
????????this（new?ArrayList（）?0）;
????}


????private?Animation（ArrayList?frames?long?totalDuration）?{
????????this.frames?=?frames;
????????this.totalDuration?=?totalDuration;
????????start（）;
????}


????/**
????????Creates?a?duplicate?of?this?animation.?The?list?of?frames
????????are?shared?between?the?two?Animations?but?each?Animation
????????can?be?animated?independently.
????*/
????public?object?clone（）?{
????????return?new?Animation（frames?totalDuration）;
????}


????/**
????????Adds?an?image?to?the?animation?with?the?specified
????????duration?（time?to?display?the?image）.
????*/
????public?synchronized?void?addframe（Image?image
????????long?duration）
????{
????????totalDuration?+=?duration;
????????frames.add（new?Animframe（image?totalDuration））;
????}


????/**
????????Starts?this?animation?over?from?the?beginning.
????*/
????public?synchronized?void?start（）?{
????????animTime?=?0;
????????currframeIndex?=?0;
????}


????/**
????????Updates?this?animation‘s?current?image?（frame）?if
????????neccesary.
????*/
????public?synchronized?void?update（long?elapsedTime）?{
????????if?（frames.size（）?>?1）?{
????????????animTime?+=?elapsedTime;

????????????if?（animTime?>=?totalDuration）?{
????????????????animTime?=?animTime?%?totalDuration;
????????????????currframeIndex?=?0;
????????????}

????????????while?（animTime?>?getframe（currframeIndex）.endTime）?{
????????????????currframeIndex++;
????????????}
????????}
????}


????/**
????????Gets?this?Animation‘s?current?image.?Returns?null?if?this
????????animation?has?no?images.
????*/
????public?synchronized?Image?getImage（）?{
????????if?（frames.size（）?==?0）?{
????????????return?null;
????????}
????????else?{
????????????return?getframe（currframeIndex）.image;
????????}
????}


????private?Animframe?getframe（int?i）?{
????????return?（Animframe）frames.get（i）;
????}


????private?class?Animframe?{

????????Image?image;
????????long?endTime;

????????public?Animframe（Image?image?long?endTime）?{
????????????this.image?=?image;
????????????this.endTime?=?endTime;
????????}
????}
}

?屬性????????????大小?????日期????時間???名稱
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??????????????1930881????????????????????135