Dan Anglin
2ebb555bac
Optionally pass in the reference of the Window to the Maze and Cell classes, and only draw the graphics if the reference exists. Use a single underscore instead of the double underscore for private Class members.
90 lines
2.6 KiB
Python
90 lines
2.6 KiB
Python
from graphics import Window, Point, Line
|
|
|
|
|
|
class Cell:
|
|
"""
|
|
A Cell represents a grid on the maze.
|
|
"""
|
|
|
|
def __init__(
|
|
self,
|
|
x1: int, y1: int,
|
|
x2: int, y2: int,
|
|
window: Window = None,
|
|
) -> None:
|
|
# Define the cell walls
|
|
top_wall = Line(Point(x1, y1), Point(x2, y1))
|
|
bottom_wall = Line(Point(x1, y2), Point(x2, y2))
|
|
left_wall = Line(Point(x1, y1), Point(x1, y2))
|
|
right_wall = Line(Point(x2, y1), Point(x2, y2))
|
|
|
|
self._top_wall = CellWall(top_wall)
|
|
self._bottom_wall = CellWall(bottom_wall)
|
|
self._left_wall = CellWall(left_wall)
|
|
self._right_wall = CellWall(right_wall)
|
|
|
|
# Calculate the cell's central point
|
|
centre_x = x1 + ((x2 - x1) / 2)
|
|
centre_y = y1 + ((y2 - y1) / 2)
|
|
self._centre = Point(centre_x, centre_y)
|
|
|
|
# A reference to the root Window class for drawing purposes.
|
|
self._window = window
|
|
|
|
def configure_walls(
|
|
self,
|
|
top: bool = True,
|
|
bottom: bool = True,
|
|
left: bool = True,
|
|
right: bool = True,
|
|
) -> None:
|
|
"""
|
|
configure_walls configures the existence of the Cell's walls.
|
|
"""
|
|
self._top_wall.exists = top
|
|
self._bottom_wall.exists = bottom
|
|
self._left_wall.exists = left
|
|
self._right_wall.exists = right
|
|
|
|
def centre(self) -> Point:
|
|
"""
|
|
centre returns the Cell's central point
|
|
"""
|
|
return self._centre
|
|
|
|
def draw(self) -> None:
|
|
"""
|
|
draw draws the cell onto the canvas
|
|
"""
|
|
if self._window:
|
|
if self._top_wall.exists:
|
|
self._window.draw_line(self._top_wall.line)
|
|
if self._bottom_wall.exists:
|
|
self._window.draw_line(self._bottom_wall.line)
|
|
if self._left_wall.exists:
|
|
self._window.draw_line(self._left_wall.line)
|
|
if self._right_wall.exists:
|
|
self._window.draw_line(self._right_wall.line)
|
|
|
|
def draw_move(self, to_cell: 'Cell', undo: bool = False) -> None:
|
|
"""
|
|
draw_move draws a path between the centre of this cell and
|
|
the centre of the given cell.
|
|
"""
|
|
if self._window:
|
|
fill_colour = "red"
|
|
if undo:
|
|
fill_colour = "grey"
|
|
line = Line(self.centre(), to_cell.centre())
|
|
self._window.draw_line(line, fill_colour)
|
|
|
|
|
|
class CellWall:
|
|
"""
|
|
A CellWall represents the existence (or non-existence) of
|
|
a Cell's wall.
|
|
"""
|
|
|
|
def __init__(self, line: Line) -> None:
|
|
self.exists = True
|
|
self.line = line
|