Cell

Our maze is made up of little boxes in a grid. Each box we call a "Cell", and it has 4 potential walls. The way the maze works, is that we start in one cell, and we're allowed to move to an adjacent cell as long as there isn't a wall in the way.

Let's build a Cell class that holds all the data about an individual cell. It should know which walls it has, know where it exists on the canvas in x/y coordinates, and have access to the window so that it can draw itself.

Assignment

1. Create a Cell class. Its constructor takes an instance of a Window, and creates the following data members:
   • has_left_wall (starts as True)
   • has_right_wall (starts as True)
   • has_top_wall (starts as True)
   • has_bottom_wall (starts as True)
   • __x1 (starts as -1.0)
   • __x2 (starts as -1.0)
   • __y1 (starts as -1.0)
   • __y2 (starts as -1.0)
   • __win
2. Add a draw() method to the Cell class. It updates its internal x/y coordinates, and draws itself on the canvas.
   • It should accept new x/y coordinates as input, and set the __x1, __y1, __x2, and __y2 data members.
   • Then, if the cell has a left wall, draw it using Lines and Points.
   • If the cell has a top wall, draw it, and so on and so forth for each wall.
3. Instead of your main function just drawing a couple lines, create a few cells and draw them! Test different combinations of walls to make sure they draw correctly.