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| import pygame
import random
WIDTH = 600
HEIGHT = 600
class Snake:
def __init__(self, screen):
self.screen = screen
self.body = []
self.fx = pygame.K_RIGHT
self.init_body()
def init_body(self, length=5):
left, top = (100, 100)
for i in range(length):
if self.body:
left, top = self.body[0].left, self.body[0].top
node = pygame.Rect(left + 20, top, 20, 20)
else:
node = pygame.Rect(left, top, 20, 20)
self.body.insert(0, node)
def draw_snake(self):
for n in self.body:
pygame.draw.rect(self.screen, (62, 122, 178), n, 0)
def add_node(self):
if self.body:
left, top = self.body[0].left, self.body[0].top
if self.fx == pygame.K_RIGHT:
left += 20
elif self.fx == pygame.K_LEFT:
left -= 20
elif self.fx == pygame.K_UP:
top -= 20
else:
top += 20
node = pygame.Rect(left, top, 20, 20)
self.body.insert(0, node)
def del_node(self):
self.body.pop()
def move(self):
self.del_node()
self.add_node()
def change(self, fx):
LR = [pygame.K_LEFT, pygame.K_RIGHT]
UD = [pygame.K_UP, pygame.K_DOWN]
if fx in LR + UD:
if fx in LR and self.fx in LR:
return
if fx in UD and self.fx in UD:
return
self.fx = fx
def is_dead(self):
if self.body[0].left not in range(WIDTH):
return True
if self.body[0].top not in range(HEIGHT):
return True
if self.body[0] in self.body[1:]:
return True
class Food:
def __init__(self):
self.node = pygame.Rect(60, 80, 20, 20)
self.flag = False
def set(self):
all_x_point = range(20, WIDTH - 20, 20)
all_y_point = range(20, HEIGHT - 20, 20)
left = random.choice(all_x_point)
top = random.choice(all_y_point)
self.node = pygame.Rect(left, top, 20, 20)
self.flag = False
def reset(self):
self.flag = True
def show_text(screen, pos, text, color, font_size=20):
cur_font = pygame.font.SysFont('SimHei', font_size)
text_fmt = cur_font.render(text, 1, color)
screen.blit(text_fmt, pos)
def show_score(screen, score, high_score):
score_text = f'得分: {score} 最高分: {high_score}'
show_text(screen, (WIDTH - 280, 30), score_text, (0, 0, 0))
def main_menu(screen):
menu_font = pygame.font.SysFont('SimHei', 40)
menu_options = ['开始游戏', '继续游戏', '暂停游戏', '结束游戏']
selected_option = 0
while True:
screen.fill((255, 255, 255))
# 绘制标题
title_text = menu_font.render('贪吃蛇', True, (0, 0, 0))
title_rect = title_text.get_rect(center=(WIDTH // 2, 100))
screen.blit(title_text, title_rect)
# 绘制菜单选项
for i, option in enumerate(menu_options):
if i == selected_option:
color = (0, 255, 0) # 选中的菜单项为绿色
else:
color = (0, 0, 0) # 其他菜单项为黑色
option_text = menu_font.render(option, True, color)
option_rect = option_text.get_rect(center=(WIDTH // 2, 200 + i * 60))
screen.blit(option_text, option_rect)
# 处理用户输入
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
return
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_UP:
selected_option = (selected_option - 1) % len(menu_options)
elif event.key == pygame.K_DOWN:
selected_option = (selected_option + 1) % len(menu_options)
elif event.key == pygame.K_RETURN:
return selected_option
pygame.display.flip()
def main():
pygame.init()
screen = pygame.display.set_mode([WIDTH, HEIGHT])
pygame.display.set_caption("贪吃蛇")
# 显示主菜单界面
selected_option = main_menu(screen)
# 根据选择的菜单项执行相应的操作
if selected_option == 0: # 开始游戏
score = 0
high_score = 0
sk = Snake(screen)
fd = Food()
dead = False
# 读取历史最高分
try:
with open('high_score.txt', 'r') as file:
high_score = int(file.read())
except FileNotFoundError:
pass
clock = pygame.time.Clock()
while True:
for e in pygame.event.get():
if e.type == pygame.QUIT:
pygame.quit()
return
if e.type == pygame.KEYDOWN:
if not dead:
sk.change(e.key)
if e.key == pygame.K_SPACE:
score = 0
sk = Snake(screen)
fd = Food()
dead = False
screen.fill((255, 255, 255))
sk.draw_snake()
if not dead:
sk.move()
if sk.is_dead():
show_text(screen, (140, 160), '我一定会回来的', (202, 92, 85), 30)
show_text(screen, (180, 320), '按 空格 重新开始', (116, 181, 103), 20)
dead = True
# 更新最高分
if score > high_score:
high_score = score
with open('high_score.txt', 'w') as file:
file.write(str(high_score))
if fd.flag:
fd.set()
pygame.draw.rect(screen, (255, 0, 0), fd.node, 0)
if sk.body[0].colliderect(fd.node):
score += 1
sk.add_node()
fd.reset()
show_score(screen, score, high_score)
pygame.display.update()
clock.tick(10)
elif selected_option == 1: # 继续游戏
# 继续之前的游戏
pass
elif selected_option == 2: # 暂停游戏
# 实现暂停游戏的功能
pass
elif selected_option == 3: # 结束游戏
pygame.quit()
return
if __name__ == '__main__':
main()
|