button.py

import pygame.font


class Button():

    def __init__(self, ai_settings, screen, stats):
        """Initialize button attributes."""

        self.screen = screen
        self.screen_rect = screen.get_rect()
        # Set the dimensions and properties of the button
        self.width, self.height = 200, 50
        self.button_color = (90, 200, 30)
        self.text_color = (255, 255, 255)
        self.font = pygame.font.SysFont(None, 48)
        # Build the button's rect object and center it
        self.rect = pygame.Rect(0, 0, self.width, self.height)
        self.rect.center = self.screen_rect.center
        self.rect.top = self.rect.center[1]
        # The button message needs to be prepped only once
        # self.msg = msg
        self.prep_msg(stats)

    def prep_text(self, stats):
        """ Prepare the text for the menu button based on state of game. """
        if not stats.game_active and not stats.game_paused and not stats.game_ended:
            self.msg = 'Play!'
        elif stats.game_active and stats.game_paused:
            self.msg = 'Resume'
        elif stats.game_ended:
            self.msg = 'Try Again!'

    def prep_msg(self, stats):
        """ Turn msg into a rendered image and center text on the button. """
        self.prep_text(stats)
        self.msg_image = self.font.render(self.msg, True, self.text_color,
                                          self.button_color)
        self.msg_image_rect = self.msg_image.get_rect()
        self.msg_image_rect.center = self.rect.center

    def draw_button(self, stats):
        # Draw blank button and then draw message
        self.prep_msg(stats)
        self.screen.fill(self.button_color, self.rect)
        self.screen.blit(self.msg_image, self.msg_image_rect)