import pygame
import sys


def check_events(settings):
    for event in pygame.event.get():
        # 当按关闭或者按ESC键退出游戏
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_ESCAPE:
                pygame.quit()
                sys.exit()
            # 按1键选择手动模式
            elif event.key == pygame.K_1:
                settings.game_mode = -1
            # 按2键选择自动模式
            elif event.key == pygame.K_2:
                settings.game_mode = -1


def show_start(settings, screen):
    """模式选择界面"""
    title_Font = pygame.font.Font('simkai.ttf', 80)  # 设置标题字体
    title_image = title_Font.render("贪吃蛇", True, (255, 255, 255), (0, 0, 0))
    title_rect = title_image.get_rect()
    title_rect.center = screen.get_rect().center

    presskey_font = pygame.font.Font('simkai.ttf', 15)  # 设置说明文字的字体
    presskey_image = presskey_font.render(
        '按1为手动模式,按2为自动模式,按ESC可退出游戏', True, (255, 255, 255), (0, 0, 0))
    presskey_rect = presskey_image.get_rect()
    presskey_rect.centerx = title_rect.centerx
    presskey_rect.top = title_rect.bottom
    while True:
        screen.fill(settings.bg_color)  # 绘制屏幕
        screen.blit(title_image, title_rect)  # 绘制标题
        screen.blit(presskey_image, presskey_rect)  # 绘制说明文字
        check_events(settings)  # 检测键盘
        if settings.game_mode != 0:  # 说明按了1或2，退出循环
            break
        pygame.display.flip()


def show_end(settings, screen):
    """结算界面"""
    title_font = pygame.font.Font('simkai.ttf', 80)
    game_image = title_font.render('Game', True, (233, 150, 122))
    over_image = title_font.render('Over', True, (233, 150, 122))
    game_rect = game_image.get_rect()
    over_rect = over_image.get_rect()
    screen_rect = screen.get_rect()
    game_rect.midtop = (settings.width / 2, screen_rect.top + 70)
    over_rect.midtop = (settings.width / 2, game_rect.bottom + 50)
    screen.blit(game_image, game_rect)
    screen.blit(over_image, over_rect)
    pygame.display.flip()
    pygame.time.wait(1500)
    settings.game_mode = 0