Shoot_the_Box.java

//Shoot the Box
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import java.util.Random;
import javax.swing.*;
public class Shoot_the_Box extends JApplet implements MouseListener,MouseMotionListener
{ int x,y,w,z,a,b,c,c1,x1,y1,e,f,s,count;
  double m,m1,i,j,i1,j1,a1,e1;
  private JPanel panel;
  public void init()
  { addMouseListener(this);
    addMouseMotionListener(this);
    a=90;
    b=290;
    x=100;
    y=300;
    e=300;
    f=100;
    panel = new JPanel()
    { protected void paintComponent(Graphics g)
      { super.paintComponent(g);
        try
        { Color c11=new Color(153,217,234);
          Color c21=new Color(0,162,232);
          Graphics2D g2 = (Graphics2D) g;
          g2.setPaint(new GradientPaint(0,0,c11,200,200,c21,true));
          Rectangle r1 = new Rectangle(0,0,500,400);
          g2.fill(r1);
          g.setColor(Color.BLACK);
          g.drawLine(100,0,100,400);
          g.drawLine(0,300,500,300);
          g.fillOval(a,b,20,20);
          g.drawRect(e,f,40,40);
          if(a>=e&&a<=e+40&&b>=f&&b<=f+40)
          { Font fo=new Font("Arial",Font.BOLD,24);
            g.setFont(fo);
            g.drawString("GOAL",150,50);
            s=1;
          }
          if(s==0)
          { if(w>=95&&w<=105&&z>=295&&z<=305&&c1==0)
            { g.drawLine(w,z,x,y);
              g.drawOval(x-7,y-5,12,12);
              i=y-290;
              j=x-90;
              m=i/j;
              Random r=new Random();
              y1=50+r.nextInt(100);
              x1=250+r.nextInt(100);
              i1=y1-100;
              j1=x1-300;
              m1=i1/j1;
            }
            if(c==1&&c1==0)
            { c=0;
              c1=1;
              count++;
            }
            if(c1==1)
            { if(x<=100)
              a=a+5;
              else if(x>100)
              a=a-5;
              a1=a;
              b=(int)(m*(a1-90))+290;
              if(x1<=300)
              e=e+1;
              else if(x1>300)
              e=e-1;
              e1=e;
              f=(int)(m1*(e1-300))+100;
            }  
            Thread.sleep(60);
            repaint();
          }
        }
        catch(Exception e)
        {}
      }
    };
    add(panel);
  }
  public void mouseClicked(MouseEvent me)
  {}
  public void mouseEntered(MouseEvent me)
  {}
  public void mouseExited(MouseEvent me)
  {}
  public void mousePressed(MouseEvent me)
  { if(count==0)
    { w=100;
      z=300;
    }
  }
  public void mouseReleased(MouseEvent me)
  { if(count==0)
    { x=me.getX();
      y=me.getY();
      c=1;
      repaint();
    }
  }
  public void mouseMoved(MouseEvent me)
  {}
  public void mouseDragged(MouseEvent me)
  { if(count==0)
    { x=me.getX();
      y=me.getY();
      repaint();
    }
  }
  public void paint(Graphics g)
  { super.paint(g);
    setSize(500,400);
  }
}