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37 lines
1.4 KiB
Python
37 lines
1.4 KiB
Python
from __future__ import annotations
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import pygame.font
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from typing import TYPE_CHECKING
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if TYPE_CHECKING:
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from alien_invasion import AlienInvasion
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class Button:
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def __init__(self, ai_game: 'AlienInvasion', msg: str) -> None:
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"""Initialize button attributes."""
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self.screen = ai_game.screen
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self.screen_rect = self.screen.get_rect()
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# Set the dimensions and properties of the button.
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self.width, self.height = 200, 50
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self.button_color = (0, 135, 0)
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self.text_color = (255, 255, 255)
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self.font = pygame.font.SysFont(None, 48)
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# Build the button's rect object and center it.
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self.rect = pygame.Rect(0, 0, self.width, self.height)
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self.rect.center = self.screen_rect.center
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# The button message needs to be prepped only once.
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self._prep_msg(msg)
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def _prep_msg(self, msg: str) -> None:
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"""Turn the message into a rendered image and center text on the button."""
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self.msg_image = self.font.render(msg, True, self.text_color, self.button_color)
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self.msg_image_rect = self.msg_image.get_rect()
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self.msg_image_rect.center = self.rect.center
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def draw_button(self) -> None:
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"""Draw blank button and then draw message."""
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self.screen.fill(self.button_color, self.rect)
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self.screen.blit(self.msg_image, self.msg_image_rect)
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