def getTileDelta(self, x, y, direction, spaces=1):
"""Get tile <spaces> away in direction from (x, y)
>>> m = Maze()
>>> m.getTileDelta(3, 4, RIGHT).hasWall(RIGHT)
False
>>> m.setTile(4, 4, RIGHT, True)
>>> m.getTileDelta(3, 4, RIGHT).hasWall(RIGHT)
True
>>> m.getTileDelta(2, 4, RIGHT, 2).hasWall(RIGHT)
True
>>> m.getTileDelta(4, 2, UP, 2).hasWall(RIGHT)
True
>>> m.getTileDelta(6, 4, LEFT, 2).hasWall(RIGHT)
True
>>> m.getTileDelta(4, 6, DOWN, 2).hasWall(RIGHT)
True
"""
delta = getDelta(direction)
dx, dy = delta
dx *= spaces
dy *= spaces
assert x + dx >= 0, "X coordinate less than 0"
assert x + dx < self.width, "X coordinate greater than width"
assert y + dy >= 0, "Y coordinate less than 0"
assert y + dy < self.height, "Y coordinate greater than height"
return self._grid[x + dx][y + dy]
def getTileDelta(self, x, y, direction, spaces=1):
"""Get tile <spaces> away in direction from (x, y)
>>> m = Maze()
>>> m.getTileDelta(3, 4, RIGHT).hasWall(RIGHT)
False
>>> m.setTile(4, 4, RIGHT, True)
>>> m.getTileDelta(3, 4, RIGHT).hasWall(RIGHT)
True
>>> m.getTileDelta(2, 4, RIGHT, 2).hasWall(RIGHT)
True
>>> m.getTileDelta(4, 2, UP, 2).hasWall(RIGHT)
True
>>> m.getTileDelta(6, 4, LEFT, 2).hasWall(RIGHT)
True
>>> m.getTileDelta(4, 6, DOWN, 2).hasWall(RIGHT)
True
"""
delta = getDelta(direction)
dx, dy = delta
dx *= spaces
dy *= spaces
assert x + dx >= 0, "X coordinate less than 0"
assert x + dx < self.width, "X coordinate greater than width"
assert y + dy >= 0, "Y coordinate less than 0"
assert y + dy < self.height, "Y coordinate greater than height"
return self._grid[x + dx][y + dy]
def generateMaze(self):
# TODO
"""Generate maze using Prim's algorithm"""
import random
center_x = Maze.width // 2
center_y = Maze.height // 2
center_tile = self.getTile(center_x, center_y)
# Add center tile and center's walls
cells = [self.getTile(center_x, center_y)]
walls = [(center_x, center_y, direction)
for direction in [RIGHT, UP, LEFT, DOWN]]
while walls != []:
# Choose a random wall
wall = walls[random.randint(0, len(walls) - 1)]
x, y = wall[0], wall[1]
direction = wall[2]
try:
# Get wall's neighboring tile
newTile = self.getTileDelta(x, y, direction)
# If neighbor tile is not already in cells, add it and its walls
if newTile not in cells:
# Do some magic that I can't be bothered to explain
nx, ny = x + getDelta(direction)[0], y + getDelta(
direction)[1]
self.setTile(x, y, direction, False)
cells.append(newTile)
for d in [RIGHT, UP, LEFT, DOWN]:
newWall = (nx, ny, d)
newWallAlt = (nx + getDelta(d)[0], ny + getDelta(d)[1],
getOpposite(d))
if (newWall not in walls) and (newWallAlt
not in walls):
walls.append(newWall)
else:
walls.remove(wall)
except AssertionError:
# If the wall's neighbor is outside of the grid, remove it
walls.remove(wall)
pass
def generateMaze(self):
# TODO
"""Generate maze using Prim's algorithm"""
import random
center_x = Maze.width // 2
center_y = Maze.height // 2
center_tile = self.getTile(center_x, center_y)
# Add center tile and center's walls
cells = [self.getTile(center_x, center_y)]
walls = [(center_x, center_y, direction) for direction in [RIGHT, UP, LEFT, DOWN]]
while walls != []:
# Choose a random wall
wall = walls[random.randint(0, len(walls) - 1)]
x, y = wall[0], wall[1]
direction = wall[2]
try:
# Get wall's neighboring tile
newTile = self.getTileDelta(x, y, direction)
# If neighbor tile is not already in cells, add it and its walls
if newTile not in cells:
# Do some magic that I can't be bothered to explain
nx, ny = x + getDelta(direction)[0], y + getDelta(direction)[1]
self.setTile(x, y, direction, False)
cells.append(newTile)
for d in [RIGHT, UP, LEFT, DOWN]:
newWall = (nx, ny, d)
newWallAlt = (nx + getDelta(d)[0], ny + getDelta(d)[1], getOpposite(d))
if (newWall not in walls) and (newWallAlt not in walls):
walls.append(newWall)
else:
walls.remove(wall)
except AssertionError:
# If the wall's neighbor is outside of the grid, remove it
walls.remove(wall)
pass
