source: java-rpg-client/gamegui/Animation.java

package gamegui;

import java.awt.*;
import java.awt.image.*;
import java.util.*;

public class Animation extends Member
{
        ArrayList<BufferedImage> frames;
        int currentFrame;
        int drawInterval;
        long lastFrameChange;
        
        public Animation(String newName, int newX, int newY, int newWidth, int newHeight, int newInterval)
        {
                super(newName, newX, newY, newWidth, newHeight);
                
                frames = new ArrayList<BufferedImage>();
                currentFrame = 0;
                drawInterval = newInterval;
                lastFrameChange = 0;
        }
        
        public void addFrame(BufferedImage newFrame)
        {
                frames.add(newFrame);
        }
        
        public void draw(Graphics g)
        {
                if(System.currentTimeMillis() - lastFrameChange > drawInterval)
                {
                        currentFrame++;
                        if(currentFrame >= frames.size())
                                currentFrame = 0;
                        
                        lastFrameChange = System.currentTimeMillis();
                }
                
        g.drawImage(frames.get(currentFrame), getX(), getY(), null);
        }
}