Making Game Robot Teleport Randomly In Room Using Random Co-Ordinates

Been struggling with this one for a long long time and its driving me crazy. I'm trying to make a robot jump around the room randomly. It will hold the current co-ordinates until it finds new ones that doesnt have an object on them. While checking random co-ordinates it will be positioned to the side of the square. 0= up, 1=right, 2=down and 3= up.  At the moment its working for UP only and I cant get it to start jumping about randomly. The positioning is on the square before the new co-ordinated one so this position will change depending on which way the robot faces.

Can anyone tell me anything seriously wrong with this code and help me out. Man its like 5am here in UK lol I been up all night with this.  Heres my code...


import SE111aClasses.*;
public class Tut14_1 {
      public static void main(String args[ ]) {
            
            // make the objects
            MyRobot robby = new MyRobot();       // robby of class MyRobot
            Room room = new Room(9);            // Room 9 has some obstacles
            Picture picture = new Picture(room,robby);
            GUI gui = new GUI();                  // gui for main method
            int i=0;
            int j=0;
            int k=0;


            // two for loops to make robby change tile and encounter obstacles
            for(i=1;i<=10;i++)
            {
                  for (j=5;j<15;j++)
                  {
                        // move robby to the tile (i,j) if it is empty
                        robby.goTo(room,i,j);      
                        picture.draw(room,robby);
                  }
            }

      for (k=0; k<10; k++)
            {
                  // teleport robby 10 times around the room
                  robby.teleport(room);
                  picture.draw(room,robby);
                  System.out.println("Teleport request sent");
                  //gui.putText("pause"); // pause between each teleport
            }
      }
}

import SE111aClasses.*;
import java.util.Random;
public class MyRobot extends Robot {

      GUI gui = new GUI();
   
      // method to move robby from current position to position (x,y) if (x,y) is empty
      // if the tile is full (i.e. contains an obstacle) robby should not move
      // message displayed to show if robby is moving to square or unable to move
      public void goTo(Room room, int x, int y)
      {
            int keepx=0; // variables to hold the robot's current position
        int keepy=0;
        int dir=0;

         keepx=get_xpos(); // use the robot methods to get x and y positions
         keepy=get_ypos();
         dir = get_dir();
            
        // setX(x);      // use the robot methods to set the position of the robot
         // setY(y-1);       // to (x,y-1), one y position lower to enable look ahead
         
     if (dir==0)
     {setX(x);
      setY(y-1);}
     
     else if (dir==1)
     {setX(x-1);
     setY(y);}
     
     else if (dir==2)
     {setX(x);
     setY(y+1);}
     
     else
     {setX(x+1);
      setY(y);}
     
     if (obstacle_ahead(room)) // if there is an obstacle ahead
            {
                  setX(keepx); // put robot back to position before goTo method
            setY(keepy);
                        System.out.println("Obstacle was ahead"); //confirms obastacle
            }
            
            else // put the robot in the correct, free y position
            
            {
                  setX(x);
                  setY(y);
                  System.out.println("There was no Obstacle was ahead");//Confirms no obstacle
                              
            } // this method ONLY works for robby when he is facing up
      }

      public void teleport(Room room) //While obstacle ahead teleport to new location
      {
      int x=0;
      int y=0;
      
            do {
        Random rand = new Random();
        x = rand.nextInt(18) + 1;
                          System.out.println("Method(Teleport) Random X choosen =" + x);
        y = rand.nextInt(18) + 1;
                          System.out.println("Method(Teleport) Random Y choosen =" + y);

       } while (isObstacleInWay(room,x,y));
    }
   
    public boolean isObstacleInWay(Room room, int x, int y)
    {            System.out.println("isObstacleInWay check"); //Check when this runs
               
          //int dir = get_dir();
          //int keepx=0; // variables to hold the robot's current position
        //int keepy=0;
    //keepx=get_xpos();
    //      keepy=get_ypos();
          
          
          //if ( (x != keepx) && (y !=keepy) )
          //{
          //      return false;
          //}
          
    //      else
          //{
                return true;
          //}
          
    }
   
      } // end class myRobot