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mazewalker [2019/08/29 23:26] frchrismazewalker [2019/08/29 23:59] frchris
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-Write an instruction ''followWallRight'' for the ''MazeWalker'' class, assuming that whenever a robot executes this instruction there is a wall directly to the right.   +Write an instruction ''followWallRight'' for the ''MazeWalker'' class, assuming that whenever a robot executes this instruction there is a wall directly to the right.  It should be able to handle these four possible situations
-{{::maze_moves.png|}}+
  
-Here are four of the different position changes that the robot must be able to make.  This instruction is the cornerstone for the program that directs a robot to escape from a maze.  It isn't the most efficient algorithm, and it won't work on mazes that have islands (Can you imagine why?).  Do you think following the left walls would be better? +====== Before ======
  
-{{ ::mazewalker.java |MazeWalker.java}} +{{::turnrightbefore.png|}} 
-  +====== After ====== 
-{{ ::mazewalkertester.java |MazeWalkerTester.java}}+{{::turnrightafter.png|}}
  
-Once the tester shows that the four cases are handled correctly, here is a maze runner class with its own maze:+These four different position changes is the cornerstone for the algorithm that directs a robot to escape from a maze simply by following the right wall.  It isn't the most efficient algorithm, and it won't work on mazes that have islands (Can you imagine why?).  Do you think following the left walls would be better? 
  
-{{ ::mazewalkerrunner.java |MazeWalkerRunner.java}} 
  
 <code java> <code java>
Line 17: Line 15:
 { {
  
- public MazeWalker(int street, int avenue, Direction direction, int beepers) {+ public MazeWalker(int street, int avenue,  
 +                       Direction direction, int beepers)  
 +       {
  super(street, avenue, direction, beepers);  super(street, avenue, direction, beepers);
   
Line 32: Line 32:
     /**     /**
      * This will move the Robot according to the diagram      * This will move the Robot according to the diagram
-     mentioned.+     above Use if () else statements to handle the 4 cases
      */      */
  public void followRightWall()   public void followRightWall() 
Line 46: Line 46:
 } }
 </code> </code>
 +
 +
 +First use the ''MazeWalkerTester'' to see if your code deals with the four situations correctly.
 + 
 +{{ ::mazewalkertester.java |MazeWalkerTester.java}}
 +
 +Once the tester shows that the four cases are handled correctly, here is a maze runner class with its own maze:
 +
 +{{ ::mazewalkerrunner.java |MazeWalkerRunner.java}}
 +
 +Hints:
 +  * Case One check: is the front clear?
 +  * Case 2,3,4 you can move
 +  * Case 2 versus case 3,4: is there a wall on the right?
 +  * In case 3 and 4 you can move to the right.
 +  * Case 3 versus case 4: is there a wall on the right?
mazewalker.txt · Last modified: 2022/09/05 12:25 by frchris

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