scoreboard.py

import pygame.font
from pygame.sprite import Group

from ship import Ship

class Scoreboard:
	"""A class to report scoring information."""

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

		# Font settings for scoring information.
		self.text_color = (30, 30, 30)
		self.font = pygame.font.SysFont(None, 48)

		# Prepare the initial score images.
		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 = round(self.stats.score, -1)
		score_str = "{:,}".format(rounded_score)
		self.score_image = self.font.render(score_str, True, self.text_color, self.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 prep_high_score(self):
		"""Turn the high score into a rendered image."""
		high_score = 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, self.settings.bg_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.score_rect.top

	def prep_level(self):
		"""Turn the level into a rendered image."""
		level_str = str(self.stats.level)
		self.level_image = self.font.render(f"Level: {level_str}", True, self.text_color, self.settings.bg_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 + 1):
			ship = Ship(self.ai_game)
			ship_width = int(ship.image.get_width() * 0.5)
			ship_height = int(ship.image.get_height() * 0.5)
			ship.image = pygame.transform.scale(ship.image, (ship_width, ship_height))
			ship.rect.x = 10 + ship_number * (ship_width + 5)
			ship.rect.y = 10
			self.ships.add(ship)

	def show_score(self):
		"""Draw scores, ships, and level o 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 check_high_score(self):
		"""Check to see if there's a new high score."""
		if self.stats.score > self.stats.high_score:
			self.stats.high_score = self.stats.score
			self.prep_high_score()