scoreboard.py

import pygame.font
from ship import Ship
from pygame.sprite import Group

class Scoreboard():
	"""A class to report scoring info."""

	def __init__(self, bs_settings, screen, stats):
		"""Initialize scorekeeping attributes."""
		self.screen = screen
		self.screen_rect = screen.get_rect()
		self.bs_settings = bs_settings
		self.stats = stats

		# Font settings for scoring information.
		self.text_color = (255, 255, 255)
		self.font = pygame.font.SysFont(None, 48)

		# Prepare the initial score image. 
		self.prep_score()
		self.prep_high_score()
		self.prep_level()
		self.prep_ships()

	def prep_score(self):
		"""Turn the score into a rendered image."""
		rounded_score = int(round(self.stats.score, -1))
		score_str = "{:,}".format(rounded_score)
		self.score_image = self.font.render(score_str, True, self.text_color, 
			self.bs_settings.bg_color)

		# Display the score at the top right of the screen. 
		self.score_rect = self.score_image.get_rect()
		self.score_rect.right = self.screen_rect.right - 20
		self.score_rect.top = 20

	def show_score(self):
		"""Draw the score to the screen."""
		self.screen.blit(self.score_image, self.score_rect)
		self.screen.blit(self.high_score_image, self.high_score_rect)
		self.screen.blit(self.level_image, self.level_rect)
		self.ships.draw(self.screen)

	def prep_high_score(self):
		"""Turn the high score into a rendered image."""
		high_score = int(round(self.stats.high_score, -1))
		high_score_str = "{:,}".format(high_score)
		self.high_score_image = self.font.render(high_score_str, True,
			self.text_color)

		# Center the high score at the top of the screen. 
		self.high_score_rect = self.high_score_image.get_rect()
		self.high_score_rect.centerx = self.screen_rect.centerx
		self.high_score_rect.top = self.screen_rect.top

	def prep_level(self):
		"""Turn the level into a rendered image."""
		self.level_image = self.font.render(str(self.stats.level), True, 
			self.text_color)

		# Position the level below the score. 
		self.level_rect = self.level_image.get_rect()
		self.level_rect.right = self.score_rect.right
		self.level_rect.top = self.score_rect.bottom + 10

	def prep_ships(self):
		"""Show how many ships are left."""
		self.ships = Group()
		for ship_number in range(self.stats.ships_left):
			ship = Ship(self.bs_settings, self.screen)
			ship.rect.x = 10 + ship_number * ship.rect.width
			ship.rect.y = 10
			self.ships.add(ship)