import java.awt.Robot;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;

import java.awt.Point;
import java.awt.PointerInfo;
import java.awt.MouseInfo;


public class Mouse{
  
  int mouseSpeed, cX, cY;  //cX = current X location
  public Mouse(int mSpeed)
  {
      mouseSpeed = mSpeed;
      cX = 0;
      cY = 0;
  }

  public double hypot(double s1, double s2)
  {
      return Math.sqrt(Math.pow(s1, 2) + Math.pow(s2, 2)); 
  }
    
  public void windMouse(double xs, double ys, double xe, double ye, double gravity, double wind, double minWait, double maxWait, double maxStep, double targetArea) throws Exception
  {
    double veloX=0, veloY=0, windX=0, windY=0, veloMag, dist, randomDist, lastDist, step;
    int lastX, lastY;
    double sqrt2, sqrt3, sqrt5;
    Robot r = new Robot();
    
    sqrt2 = Math.sqrt(2);
    sqrt3 = Math.sqrt(3);
    sqrt5 = Math.sqrt(5);

    while(hypot(xs - xe, ys - ye) > 1)
    {
        dist = hypot(xs - xe, ys - ye);
        wind = Math.min(wind, dist);
        
        if(dist > targetArea)
        {
            windX = windX / sqrt3 + (((int)(Math.random() * Math.round(wind)) * 2 + 1)  - wind) / sqrt5;
            windY = windY / sqrt3 + (((int)(Math.random() * Math.round(wind)) * 2 + 1)  - wind) / sqrt5;
        }
          else
          {
            windX = windX / sqrt2;
            windY = windY / sqrt2;
            
            if(maxStep < 3)
            {
                maxStep = (int)(Math.random() * 3) + 3;
            }
              else
              {
                  maxStep = maxStep / sqrt5;
              }
          }
          
        veloX = veloX + windX;
        veloY = veloY + windY;
        veloX = veloX + gravity * (xe - xs) / dist;
        veloY = veloY + gravity * (ye - ys) / dist;
        
        if(hypot(veloX, veloY) > maxStep)
        {
            randomDist = maxStep / 2.0 + (int)(Math.random() * (Math.round(maxStep) / 2));
            veloMag = Math.sqrt(veloX * veloX + veloY * veloY);
            veloX = (veloX / veloMag) * randomDist;
            veloY = (veloY / veloMag) * randomDist;    
        }

        lastX = (int)Math.round(xs);
        lastY = (int)Math.round(ys);
        xs = (xs + veloX);
        ys = (ys + veloY);
    
        if((lastX != Math.round(xs)) || (lastY != Math.round(ys)))
        {
          r.mouseMove(Math.round((int)xs), Math.round((int)ys));
        }
        
        step = hypot(xs - lastX, ys - lastY);
        r.delay((int)Math.round((maxWait - minWait) * (step / maxStep) + minWait));
        lastDist = dist;
    }
  
    if((Math.round(xe) != Math.round(xs)) || (Math.round(ye) != Math.round(ys)))    
    {
      r.mouseMove(Math.round((int)xe), Math.round((int)ye));
    }
    
  }
  
  
  public int posX()
  {
      PointerInfo pInfo = MouseInfo.getPointerInfo();      
      Point mouseLocation = new Point(pInfo.getLocation());
      return (int)mouseLocation.getX();
  }
  
  public int posY()
  {
      PointerInfo pInfo = MouseInfo.getPointerInfo();      
      Point mouseLocation = new Point(pInfo.getLocation());
      return (int)mouseLocation.getY();
  }
  
  public void getPos()
  {
      cX = posX();
      cY = posY();
  }
  
  public void move(int x, int y, int rx, int ry) throws Exception
  {
      
      int cx, cy;
      double randSpeed = ((Math.random() * mouseSpeed) / 2 + mouseSpeed) / 10;
      
      if(randSpeed == 0)
        randSpeed = 0.1;
      
      getPos();
      
      x = x + (int)(Math.random() * rx);
      y = y + (int)(Math.random() * ry);
      
      windMouse(cX, cY, x, y, 9.0, 3.0, (10.0/randSpeed), (15.0/randSpeed), (10.0*randSpeed), (10.0*randSpeed));
                  
  }
  
  public void click(boolean left)throws Exception
  {
    int counter = 0;
      
    Robot r = new Robot();
    if(left)
    {
      r.mousePress(InputEvent.BUTTON1_MASK);
      
      do
      {
        r.delay((int)(Math.random() * 10) + 5);
        counter ++;
      }
      while(counter < 4);
      
      r.mouseRelease(InputEvent.BUTTON1_MASK);
    }else{
        
      r.mousePress(InputEvent.BUTTON3_MASK);
      
      do
      {
        r.delay((int)(Math.random() * 10) + 50);
        counter ++;
      }
      while(counter < 4);
      
      r.mouseRelease(InputEvent.BUTTON3_MASK);    
        
    }   
  }
  
  
}

/**
 * Write a description of class Tester here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Tester
{
    public static void main(String[] args)  throws Exception
    {
        Mouse mouse = new Mouse(15);
        
        for(int x = 0; x <= 30; x ++)
        {
           mouse.move(0, 0, 500, 600);
        }
    }
}