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Thread: How to implement the wall follower algorithm in java?

  1. #1
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    Default How to implement the wall follower algorithm in java?

    Hey guys,

    I'm new here. Well I'm working on my homework in java which is about implementing a rat that will traverse through the maze and exit.
    So for my second rat I want to implement a left hand or right hand wall follower rat. i.e the rat will always check to see if there is a wall on the right and move along it.

    The problem is I don't see how I can implement it. The reason I say this is because the rat is just a simple dot. I can't really tell it to move forward. I can say move up which is incrementing the rows or move right which is incrementing the cols so I reall can't figure out the wall follow algorithm.

    I know I would need direction but every implementation of direction I have made so far just gets my rat stuck.

    I'm looking for someone to help me understand the algorithm and how to implement it, like some sort of pseudo code and explanation. That would be greatly appreciated.

    This may help as well. This is how the maze looks like.
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
    F X X
    X XX XXX X XXXXXXXXXXXXXXXXX X
    X X XXX X X X
    XX X XXX XXXXX XXXXXXXXXXXXX X
    XX X XXX X
    XX X XXXXXXXXXXXXXXXXXXXXXXX X
    XX X XX X XXXX X
    XX X XX XXXXXXXXXXXXXXX XXXX X
    X X XX X X
    X XX XXXXXXXXXXXXXXXX X XXXXXX
    X XX X XXXXXX
    X XXXXXXXXXXXXXXXXXX XXXXXX
    XXXXXXXXXXXXXXXXXXXXXXX XXXXXX
    XXXX XXX XXXXXX
    XXXXXXXXXXXXX XXXXXX XXXX
    X X
    X XXXXX XXXXXXXXXXXXXXXXXXXX X
    X XXXXX X X X XXXXXXXXX X
    X X X X XXXX X XXXXXXXXX X
    X XXXXX X X X X X X
    X X X X X XXXX XXXXXXXXX X
    X X XXXXX X X XXXX XXXXXXXXX X
    X X X X
    X XXXXX X XXXXXXXXXXXXXXXXXXXX
    X X X X
    X X XXXXX XXXX XXXX XXXXXXXX X
    X X XXXX XXXX X X
    XSXXXXXXXXX X X X XX X
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    Where the x are the walls.

    So yeah, thanks in advance.


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    Administrator copeg's Avatar
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    Default Re: How to implement the wall follower algorithm in java?

    This thread has been cross posted here:

    http://www.java-forums.org/new-java/55382-how-implement-wall-follower-algorithm-java.html

    Although cross posting is allowed, for everyone's benefit, please read:

    Java Programming Forums Cross Posting Rules

    The Problems With Cross Posting


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    Default Re: How to implement the wall follower algorithm in java?

    Yeah sorry. I have posted it on the other java forum as well. I was trying to get various opinions. Sorry about that.

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    Default Re: How to implement the wall follower algorithm in java?


  5. The Following User Says Thank You to Darryl.Burke For This Useful Post:

    copeg (February 10th, 2012)

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    Default Re: How to implement the wall follower algorithm in java?

    Quote Originally Posted by michaelnana View Post
    Yeah sorry. I have posted it on the other java forum as well. I was trying to get various opinions. Sorry about that.
    If you read the links in Darryl and my posts, you would realize what cross posting does - it wastes the time of those trying to help, in affect biting the hand that feeds you. You have yet to be forthright in disclosing your crossposts, and yes this will hurt your chances of receiving help

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