ชวา
ฉันตัดสินใจใช้แนวทางไทม์แมชชีน ปรากฎส่วนผสมหลักของเครื่องย้อนเวลาคือ java.awt.Robot โปรแกรมของฉันให้คุณเลื่อนเมาส์ไปรอบ ๆ เป็นเวลา 10 วินาที หลังจากผ่านไป 10 วินาทีมันจะย้อนเวลากลับไปและสร้างการเคลื่อนไหวของเมาส์ใหม่ในขณะที่ทำนายได้อย่างสมบูรณ์แบบ
นี่คือรหัส:
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Robot;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.util.ArrayList;
import java.util.TimerTask;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;
public class TimeMachine extends JPanel implements MouseMotionListener {
Timer timer;
int time = 10;
java.util.Timer taskTimer;
ArrayList<Point> mousePoints;
ArrayList<Long> times;
Robot robot;
int width, height;
ArrayList<Point> drawMousePoints;
public TimeMachine(){
width = 500;
height = 500;
drawMousePoints = new ArrayList<Point>();
robot = null;
try{
robot = new Robot();
}
catch(Exception e){
System.out.println("The time machine malfunctioned... Reverting to 512 BC");
}
mousePoints = new ArrayList<Point>();
times = new ArrayList<Long>();
taskTimer = new java.util.Timer();
ActionListener al = new ActionListener(){
public void actionPerformed(ActionEvent e){
time--;
if(time == 0)
rewind();
repaint();
}
};
timer = new Timer(1000, al);
start();
}
public void paint(Graphics g){
g.clearRect(0, 0, width, height);
g.drawString("Time Machine activiates in: " + time, 15, 50);
for(int i=0; i<drawMousePoints.size(); i++){
Point drawMousePoint = drawMousePoints.get(i);
drawMouse(drawMousePoint.x-getLocationOnScreen().x, drawMousePoint.y-getLocationOnScreen().y, g, Color.BLACK, Color.LIGHT_GRAY, (double)i/drawMousePoints.size());
}
}
public void drawMouse(int x, int y, Graphics g, Color line, Color fill, double alpha){
Graphics2D g2d = (Graphics2D)g;
g2d.setColor(new Color(fill.getRed(), fill.getGreen(), fill.getBlue(), (int)Math.max(Math.min(alpha*255, 255), 0)));
g2d.fillPolygon(new int[]{x, x, x+4, x+8, x+10, x+7, x+12}, new int[]{y, y+16, y+13, y+20, y+19, y+12, y+12}, 7);
g2d.setColor(new Color(line.getRed(), line.getGreen(), line.getBlue(), (int)Math.max(Math.min(alpha*255, 255), 0)));
g2d.drawLine(x, y, x, y + 16);
g2d.drawLine(x, y+16, x+4, y+13);
g2d.drawLine(x+4, y+13, x+8, y+20);
g2d.drawLine(x+8, y+20, x+10, y+19);
g2d.drawLine(x+10, y+19, x+7, y+12);
g2d.drawLine(x+7, y+12, x+12, y+12);
g2d.drawLine(x+12, y+12, x, y);
}
public void start(){
timer.start();
prevTime = System.currentTimeMillis();
mousePoints.clear();
}
public void rewind(){
timer.stop();
long timeSum = 0;
for(int i=0; i<times.size(); i++){
timeSum += times.get(0);
final boolean done = i == times.size()-1;
taskTimer.schedule(new TimerTask(){
public void run(){
Point point = mousePoints.remove(0);
drawMousePoints.clear();
drawMousePoints.addAll(mousePoints.subList(0, Math.min(mousePoints.size(), 30)));
robot.mouseMove(point.x, point.y);
repaint();
if(done)
System.exit(0);
}
}, timeSum);
}
}
long prevTime = 0;
public void record(MouseEvent m){
if(timer.isRunning()){
long time = System.currentTimeMillis();
mousePoints.add(new Point(m.getXOnScreen(), m.getYOnScreen()));
times.add((time-prevTime)/10);
prevTime = time;
}
}
public static void main(String[] args){
TimeMachine timeMachine = new TimeMachine();
JFrame frame = new JFrame("Time Machine");
frame.setSize(timeMachine.width, timeMachine.height);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
frame.addMouseMotionListener(timeMachine);
frame.add(timeMachine);
}
public void mouseDragged(MouseEvent m) {
record(m);
}
public void mouseMoved(MouseEvent m) {
record(m);
}
}