Latest Tutorials| Questions and Answers|Ask Questions?|Site Map

Home Answers Viewqa JavaScriptQuestions Grid World project Run Error !! help please!!

View Questions and Answers by Category


Have Programming Question? Ask it here!

Seungkwon Lee
Grid World project Run Error !! help please!!
1 Answer(s)      4 years ago
Posted in : JavaScript Questions

i'm trying to make a bug multiply when it hits a rock or another bug or a side the bug will remove itself from the grid and add 2 bugs to a empty location. It "steps" but does not "run"

here is my code:

import info.gridworld.grid.Location; import info.gridworld.grid.Grid; import java.util.Random; import; import; import; import; import java.util.ArrayList; import java.lang.Object;

public class MultiplyingBug extends Bug {

 private int steps ;
 private int sideLength;

public MultiplyingBug(int length)
    steps = 0;
    sideLength = length;

 * Moves to the next location of the diagnol.

public void act()

    if (steps < sideLength && canMove())

        steps = 0;


   Grid<Actor> gr = getGrid();
    if (gr == null)

        //Use RandomGenerator to determine where to put the bug on the grid
    Random randomGenerator = new Random();
    for ( int idx = 0; idx <= 9; idx++)


        //when a bug cannot move , creates a new bug in new location
     if (canMove() == false)

        Location old = getLocation();
        MultiplyingBug NewBug= new MultiplyingBug(100); 
        Location another = new Location (randomGenerator.nextInt(10), randomGenerator.nextInt(10));
        NewBug.putSelfInGrid(gr, another);

         MultiplyingBug NewBug2= new MultiplyingBug(100); 
        Location another2 = new Location (randomGenerator.nextInt(10), randomGenerator.nextInt(10));
        NewBug2.putSelfInGrid(gr, another2);


} }

and Here is my error...:
(it runs at first but when the bug hits a side, the error occurs and i exit the error but run does not work anymore)

Exception in thread "AWT-EventQueue-0" java.lang.IllegalStateException: This actor is not contained in a grid. at at MultiplyingBug.act( at at info.gridworld.gui.GUIController.step( at info.gridworld.gui.GUIController$2.actionPerformed( at javax.swing.Timer.fireActionPerformed( at javax.swing.Timer$ at java.awt.event.InvocationEvent.dispatch( at java.awt.EventQueue.dispatchEvent( at java.awt.EventDispatchThread.pumpOneEventForFilters( at java.awt.EventDispatchThread.pumpEventsForFilter( at java.awt.EventDispatchThread.pumpEventsForHierarchy( at java.awt.EventDispatchThread.pumpEvents( at java.awt.EventDispatchThread.pumpEvents( at

thank you...PLEASE HELP ME!!

View Answers

March 18, 2011 at 8:12 AM

ignore the comment " move to the next location of diagonal...

Related Tutorials/Questions & Answers: