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mazewalker [2019/08/29 23:26]
frchris
mazewalker [2019/08/29 23:59] (current)
frchris
Line 1: Line 1:
-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>
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 { {
  
- 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);
   
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     /**     /**
      * 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.1567135586.txt.gz · Last modified: 2019/08/29 23:26 by frchris