Dan Anglin
4d72fe8e43
- Fixed the issue where during the reconfiguration of the walls of a cell, those that weren't being reconfigured were reset to True regardless of their previous configuration. - During testing, don't run the _break_walls_r method because it will run into the RecursionError exception. - Simplify the code for drawing cells and fix the redrawing wasn't applied properly.
134 lines
3.6 KiB
Python
134 lines
3.6 KiB
Python
from typing import Dict
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from enum import Enum
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from graphics import Window, Point, Line
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import errors
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class CellWallLabel(Enum):
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"""
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CellWallLabel is used to label a CellWall
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"""
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TOP = 0
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BOTTOM = 1
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LEFT = 2
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RIGHT = 3
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class CellWall:
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"""
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A CellWall represents the existence (or non-existence) of
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a Cell's wall.
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"""
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def __init__(self, line: Line, window: Window) -> None:
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self.exists = True
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self.line = line
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self._window = window
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def draw(self):
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fill_colour = self._window.cell_grid_colour
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if not self.exists:
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fill_colour = self._window.background_colour
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self._window.draw_line(self.line, fill_colour=fill_colour)
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class Cell:
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"""
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A Cell represents a grid on the maze.
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"""
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def __init__(
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self,
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x1: int, y1: int,
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x2: int, y2: int,
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window: Window = None,
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) -> None:
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# Validation
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if (x2 < x1) or (y2 < y1):
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raise errors.CellInvalidError(x1, y1, x2, y2)
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if (x2 - x1) < 2:
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raise errors.CellTooSmallError("horizontal", x2-x1)
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if (y2 - y1) < 2:
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raise errors.CellTooSmallError("vertical", y2-y1)
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# Define the cell walls
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top_wall = Line(Point(x1, y1), Point(x2, y1))
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bottom_wall = Line(Point(x1, y2), Point(x2, y2))
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left_wall = Line(Point(x1, y1), Point(x1, y2))
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right_wall = Line(Point(x2, y1), Point(x2, y2))
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self._walls: Dict[CellWallLabel, CellWall] = {
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CellWallLabel.TOP: CellWall(top_wall, window),
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CellWallLabel.BOTTOM: CellWall(bottom_wall, window),
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CellWallLabel.LEFT: CellWall(left_wall, window),
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CellWallLabel.RIGHT: CellWall(right_wall, window),
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}
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# Calculate the cell's central point
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centre_x = x1 + ((x2 - x1) / 2)
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centre_y = y1 + ((y2 - y1) / 2)
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self._centre = Point(centre_x, centre_y)
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# A reference to the root Window class for drawing purposes.
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self._window = window
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self.visited = False
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def configure_walls(
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self,
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top: bool = None,
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bottom: bool = None,
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left: bool = None,
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right: bool = None,
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) -> None:
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"""
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configure_walls configures the existence of the Cell's walls.
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"""
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if top is not None:
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self._walls[CellWallLabel.TOP].exists = top
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if bottom is not None:
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self._walls[CellWallLabel.BOTTOM].exists = bottom
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if left is not None:
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self._walls[CellWallLabel.LEFT].exists = left
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if right is not None:
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self._walls[CellWallLabel.RIGHT].exists = right
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def centre(self) -> Point:
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"""
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centre returns the Cell's central point
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"""
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return self._centre
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def wall_exists(self, wall: CellWallLabel) -> bool:
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"""
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returns True if a given cell wall exists, or false otherwise.
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"""
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return self._walls[wall].exists
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def draw(self) -> None:
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"""
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draw draws the cell onto the canvas
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"""
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if not self._window:
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return
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for label in CellWallLabel:
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self._walls[label].draw()
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def draw_move(self, to_cell: 'Cell', undo: bool = False) -> None:
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"""
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draw_move draws a path between the centre of this cell and
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the centre of the given cell.
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"""
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if not self._window:
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return
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fill_colour = "red"
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if undo:
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fill_colour = "grey"
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line = Line(self.centre(), to_cell.centre())
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self._window.draw_line(line, fill_colour)
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