class Maze:
"""Build and hold all components of the maze."""
def __init__(self, screen, game_settings, maze_file, sprite_sheet, pacman,
sounds):
"""Initialize instance attributes."""
self.screen = screen
self.game_settings = game_settings
self.maze_file = maze_file
self.sprite_sheet = sprite_sheet
self.pacman = pacman
self.sounds = sounds
self.maze_rows = []
self.x_offset = 0
self.y_offset = 60
self.walls = Group()
self.dots = Group()
self.power_dots = Group()
self.shields = Group()
self.nodes = Group()
self.fruits = Group()
self.portals = Group()
self.ghosts = Group()
self.bullets = Group()
self.a_star = None
self.time_elapsed = 2000
self.animate_ghosts = 0
self.bullet_indicator = 0
self.create_blue_portal = False
self.create_red_portal = False
self.blue_bullet_position = None
self.red_bullet_position = None
for row in maze_file:
self.maze_rows.append(row)
maze_file.close()
def build_maze(self):
"""Build the maze according to the maze layout file."""
self.ghosts.empty()
self.dots.empty()
self.power_dots.empty()
self.shields.empty()
self.fruits.empty()
self.walls.empty()
self.bullets.empty()
self.portals.empty()
maze_layout = self.maze_rows
for row in maze_layout:
for char in row:
if char == 'W':
wall = MazeImage(screen=self.screen,
image=self.sprite_sheet.wall_image)
wall.rect.x += self.x_offset
wall.rect.y += self.y_offset
self.walls.add(wall)
elif char == '.':
dot = MazeImage(screen=self.screen,
image=self.sprite_sheet.dot_image)
dot.rect.x += self.x_offset
dot.rect.y += self.y_offset
self.dots.add(dot)
point = Point(x=self.x_offset + 7, y=self.y_offset + 7)
node = Node(position=point, rect=dot.rect)
self.nodes.add(node)
elif char == ',':
dot = MazeImage(screen=self.screen,
image=self.sprite_sheet.dot_image)
dot.rect.x += self.x_offset
dot.rect.y += self.y_offset
point = Point(x=self.x_offset + 7, y=self.y_offset + 7)
node = Node(position=point, rect=dot.rect)
self.nodes.add(node)
elif char == 'o':
power_dot = MazeImage(
screen=self.screen,
image=self.sprite_sheet.power_dot_image)
power_dot.rect.x += self.x_offset
power_dot.rect.y += self.y_offset
self.power_dots.add(power_dot)
point = Point(x=self.x_offset + 7, y=self.y_offset + 7)
node = Node(position=point, rect=power_dot.rect)
self.nodes.add(node)
elif char == '-':
shield = MazeImage(screen=self.screen,
image=self.sprite_sheet.shield_image)
shield.rect.x += self.x_offset
shield.rect.y += self.y_offset
self.shields.add(shield)
point = Point(x=self.x_offset + 7, y=self.y_offset + 7)
node = Node(position=point, rect=shield.rect)
self.nodes.add(node)
elif char == 'F':
fruit = MazeImage(screen=self.screen,
image=self.sprite_sheet.fruit_image)
fruit.rect.x += self.x_offset
fruit.rect.y += self.y_offset - 5
fruit_rect = self.sprite_sheet.shield_image.get_rect()
self.fruits.add(fruit)
point = Point(x=self.x_offset + 7, y=self.y_offset + 7)
node = Node(position=point, rect=fruit_rect)
self.nodes.add(node)
self.x_offset += 15
self.x_offset = 0
self.y_offset += 15
self.a_star = AStar()
self.a_star.create_nodes(nodes=self.nodes.sprites())
self.create_ghosts()
self.y_offset = 60
def create_ghosts(self):
"""Create the ghosts that hunt pacman."""
ghost = Ghost(screen=self.screen,
game_settings=self.game_settings,
image_list=self.sprite_sheet.blinky_image,
scared_image=self.sprite_sheet.ghost_dead_image,
blink_image=self.sprite_sheet.blink_image,
start_position=self.nodes.sprites()[189].position,
indicator=0,
a_star=self.a_star,
pacman=self.pacman,
nodes=self.nodes)
self.ghosts.add(ghost)
ghost = Ghost(screen=self.screen,
game_settings=self.game_settings,
image_list=self.sprite_sheet.pinky_image,
scared_image=self.sprite_sheet.ghost_dead_image,
blink_image=self.sprite_sheet.blink_image,
start_position=self.nodes.sprites()[242].position,
indicator=1,
a_star=self.a_star,
pacman=self.pacman,
nodes=self.nodes)
self.ghosts.add(ghost)
ghost = Ghost(screen=self.screen,
game_settings=self.game_settings,
image_list=self.sprite_sheet.inky_image,
scared_image=self.sprite_sheet.ghost_dead_image,
blink_image=self.sprite_sheet.blink_image,
start_position=self.nodes.sprites()[246].position,
indicator=2,
a_star=self.a_star,
pacman=self.pacman,
nodes=self.nodes)
self.ghosts.add(ghost)
ghost = Ghost(screen=self.screen,
game_settings=self.game_settings,
image_list=self.sprite_sheet.clyde_image,
scared_image=self.sprite_sheet.ghost_dead_image,
blink_image=self.sprite_sheet.blink_image,
start_position=self.nodes.sprites()[249].position,
indicator=3,
a_star=self.a_star,
pacman=self.pacman,
nodes=self.nodes)
self.ghosts.add(ghost)
def blit(self):
"""Draw the maze and its components to the screen."""
self.walls.draw(self.screen)
self.dots.draw(self.screen)
self.power_dots.draw(self.screen)
self.shields.draw(self.screen)
self.fruits.draw(self.screen)
self.portals.draw(self.screen)
for bullet in self.bullets.sprites():
bullet.draw_bullet()
self.ghosts.draw(self.screen)
def update_ghosts(self):
"""Update ghost positions, give them new paths, manage timers for animation switching."""
if self.pacman.power_up:
if self.time_elapsed >= 600 and self.time_elapsed % 50 == 0:
for ghost in self.ghosts:
ghost.blink()
if self.time_elapsed % 200 == 0:
if self.pacman.current_position.x > self.screen.get_rect(
).centerx:
if self.pacman.current_position.y > self.screen.get_rect(
).centery:
goal = self.nodes.sprites()[1].position
else:
goal = self.nodes.sprites()[488].position
else:
if self.pacman.current_position.y > self.screen.get_rect(
).centery:
goal = self.nodes.sprites()[37].position
else:
goal = self.nodes.sprites()[529].position
for ghost in self.ghosts:
if not ghost.is_dead:
ghost.gen_new_path(scared=True, goal=goal)
else:
for ghost in self.ghosts:
if ghost.is_scared:
ghost.restore()
if self.time_elapsed >= 2000:
for ghost in self.ghosts.sprites():
ghost.gen_new_path(scatter=True)
self.time_elapsed = 0
if self.animate_ghosts >= 200:
for ghost in self.ghosts.sprites():
ghost.switch_image()
self.animate_ghosts = 0
for ghost in self.ghosts.sprites():
ghost.update()
self.time_elapsed += 1
self.animate_ghosts += 1
def fire_bullet(self):
"""Fire portal gun bullet from pacman."""
if len(self.bullets) < 2 and self.pacman.current_position is not None:
if self.bullet_indicator == 0:
self.sounds.blue_portal.play()
new_bullet = Bullet(game_settings=self.game_settings,
screen=self.screen,
bullet_color=(96, 166, 249),
indicator=self.bullet_indicator,
pacman=self.pacman)
self.bullets.add(new_bullet)
self.bullet_indicator = 1
else:
self.sounds.red_portal.play()
new_bullet = Bullet(game_settings=self.game_settings,
screen=self.screen,
bullet_color=(254, 163, 89),
indicator=self.bullet_indicator,
pacman=self.pacman)
self.bullets.add(new_bullet)
self.bullet_indicator = 0
def update_bullets(self):
"""Update current bullet positions, check for collisions."""
for bullet in self.bullets:
bullet.update()
self.check_bullet_node_collision()
self.check_bullet_wall_collision()
def check_bullet_node_collision(self):
"""Check a bullets last node collision and sets that to it's previous position."""
for bullet in self.bullets.sprites():
collisions = pygame.sprite.spritecollide(bullet, self.nodes, False)
if collisions:
bullet.previous_position = collisions[0]
def check_bullet_wall_collision(self):
"""Check if a bullet collides with a wall, destroys bullet, creates a portal."""
for bullet in self.bullets.sprites():
collisions = pygame.sprite.spritecollide(bullet, self.walls, False)
if collisions:
if bullet.indicator == 0:
self.create_blue_portal = True
self.blue_bullet_position = bullet.previous_position
else:
self.create_red_portal = True
self.red_bullet_position = bullet.previous_position
bullet.kill()
def update_portals(self):
"""Check if portals need to be closed."""
portal_position = None
if self.create_blue_portal:
for portal in self.portals.sprites():
if portal.indicator == 0:
portal.closing_portal = True
else:
portal_position = portal.position
portal.other_portal = self.blue_bullet_position
new_portal = Portal(screen=self.screen,
image_list=self.sprite_sheet.blue_portal,
position=self.blue_bullet_position,
indicator=0,
other_portal=portal_position)
self.portals.add(new_portal)
self.create_blue_portal = False
if self.create_red_portal:
for portal in self.portals.sprites():
if portal.indicator == 1:
portal.closing_portal = True
else:
portal_position = portal.position
portal.other_portal = self.red_bullet_position
new_portal = Portal(screen=self.screen,
image_list=self.sprite_sheet.red_portal,
position=self.red_bullet_position,
indicator=1,
other_portal=portal_position)
self.portals.add(new_portal)
self.create_red_portal = False
self.portals.update()
