【Python黑科技】tkinter库实战“贪吃蛇”小游戏（保姆级图文+实现代码）_kitten.n的贪吃蛇代码怎么编

---

欢迎关注 『Python黑科技』 系列，持续更新中
欢迎关注 『Python黑科技』 系列，持续更新中

实现效果

---

实现思路

• 初始状态的蛇的长 3个像素点，食物 1 个像素点，
• 蛇长度增加：蛇吃到了食物，蛇头的坐标等于食物的坐标，那么在第 2 点的坐标不用去掉，视觉上就增长了蛇身
• 吃到食物的声音提示

离开空间或是碰撞到自己身体都会算失败。

#功能逻辑
if path.exists(‘eat.wav’):
sound_wav = pygame.mixer.Sound(“eat.wav”)
sound = True
title_font = pygame.font.SysFont(‘simsunnsimsun’, 32)
welcome_words = title_font.render(
‘贪吃蛇’, True, (0, 0, 0), (255, 255, 255))
tips_font = pygame.font.SysFont(‘simsunnsimsun’, 20)
start_game_words = tips_font.render(
‘点击开始’, True, (0, 0, 0), (255, 255, 255))
close_game_words = tips_font.render(
‘按ESC退出’, True, (0, 0, 0), (255, 255, 255))
gameover_words = title_font.render(
‘游戏结束’, True, (205, 92, 92), (255, 255, 255))
win_words = title_font.render(
‘蛇很长了，你赢了！’, True, (0, 0, 205), (255, 255, 255))
screen = pygame.display.set_mode((640, 480), 0, 32)

• 控制贪吃蛇运动方向

#控制贪吃蛇运动方向
def direction_check(moving_direction, change_direction):
directions = [[‘up’, ‘down’], [‘left’, ‘right’]]
if moving_direction in directions[0] and change_direction in directions[1]:
return change_direction
elif moving_direction in directions[1] and change_direction in directions[0]:
return change_direction
return moving_direction

---

实现代码

通过w|s|a|d控制贪吃蛇的上下左右运动

# @Time    : 2022/2/9 20:13
# @Author  : 南黎
# @FileName: 贪吃蛇.py

import pygame
from os import path
from sys import exit
from time import sleep
from random import choice
from itertools import product
from pygame.locals import QUIT, KEYDOWN


def direction_check(moving_direction, change_direction):
    directions = [['up', 'down'], ['left', 'right']]
    if moving_direction in directions[0] and change_direction in directions[1]:
        return change_direction
    elif moving_direction in directions[1] and change_direction in directions[0]:
        return change_direction
    return moving_direction


class Snake:
    colors = list(product([0, 64, 128, 192, 255], repeat=3))[1:-1]

    def __init__(self):
        self.map = {(x, y): 0 for x in range(32) for y in range(24)}
        self.body = [[100, 100], [120, 100], [140, 100]]
        self.head = [140, 100]
        self.food = []
        self.food_color = []
        self.moving_direction = 'right'
        self.speed = 4
        self.generate_food()
        self.game_started = False

    def check_game_status(self):
        if self.body.count(self.head) > 1:
            return True
        if self.head[0] < 0 or self.head[0] > 620 or self.head[1] < 0 or self.head[1] > 460:
            return True
        return False

    def move_head(self):
        moves = {
            'right': (20, 0),
            'up': (0, -20),
            'down': (0, 20),
            'left': (-20, 0)
        }
        step = moves[self.moving_direction]
        self.head[0] += step[0]
        self.head[1] += step[1]

    def generate_food(self):
        self.speed = len(
            self.body) // 16 if len(self.body) // 16 > 4 else self.speed
        for seg in self.body:
            x, y = seg
            self.map[x // 20, y // 20] = 1
        empty_pos = [pos for pos in self.map.keys() if not self.map[pos]]
        result = choice(empty_pos)
        self.food_color = list(choice(self.colors))
        self.food = [result[0] * 20, result[1] * 20]


def main():
    key_direction_dict = {
        119: 'up',  # W
        115: 'down',  # S
        97: 'left',  # A
        100: 'right',  # D
        273: 'up',  # UP
        274: 'down',  # DOWN
        276: 'left',  # LEFT
        275: 'right',  # RIGHT
    }

    fps_clock = pygame.time.Clock()
    pygame.init()
    pygame.mixer.init()
    snake = Snake()
    sound = False
    if path.exists('eat.wav'):
        sound_wav = pygame.mixer.Sound("eat.wav")
        sound = True
    title_font = pygame.font.SysFont('simsunnsimsun', 32)
    welcome_words = title_font.render(
        '贪吃蛇', True, (0, 0, 0), (255, 255, 255))
    tips_font = pygame.font.SysFont('simsunnsimsun', 20)
    start_game_words = tips_font.render(
        '点击开始', True, (0, 0, 0), (255, 255, 255))
    close_game_words = tips_font.render(
        '按ESC退出', True, (0, 0, 0), (255, 255, 255))
    gameover_words = title_font.render(
        '游戏结束', True, (205, 92, 92), (255, 255, 255))
    win_words = title_font.render(
        '蛇很长了，你赢了！', True, (0, 0, 205), (255, 255, 255))
    screen = pygame.display.set_mode((640, 480), 0, 32)
    pygame.display.set_caption('贪吃蛇')
    new_direction = snake.moving_direction
    while 1:
        for event in pygame.event.get():
            if event.type == QUIT:
                exit()
            elif event.type == KEYDOWN:
                if event.key == 27:
                    exit()
                if snake.game_started and event.key in key_direction_dict:
                    direction = key_direction_dict[event.key]
                    new_direction = direction_check(
                        snake.moving_direction, direction)
            elif (not snake.game_started) and event.type == pygame.MOUSEBUTTONDOWN:
                x, y = pygame.mouse.get_pos()
                if 213 <= x <= 422 and 304 <= y <= 342:
                    snake.game_started = True
        screen.fill((255, 255, 255))
        if snake.game_started:
            snake.moving_direction = new_direction  # 在这里赋值，而不是在event事件的循环中赋值，避免按键太快
            snake.move_head()
            snake.body.append(snake.head[:])
            if snake.head == snake.food:
                if sound:
                    sound_wav.play()
                snake.generate_food()
            else:
                snake.body.pop(0)
            for seg in snake.body:
                pygame.draw.rect(screen, [0, 0, 0], [
                    seg[0], seg[1], 20, 20], 0)
            pygame.draw.rect(screen, snake.food_color, [
                snake.food[0], snake.food[1], 20, 20], 0)
            if snake.check_game_status():
                screen.blit(gameover_words, (241, 310))
                pygame.display.update()
                snake = Snake()
                new_direction = snake.moving_direction
                sleep(3)
            elif len(snake.body) == 512:
                screen.blit(win_words, (33, 210))
                pygame.display.update()
                snake = Snake()
                new_direction = snake.moving_direction
                sleep(3)
        else:
            screen.blit(welcome_words, (240, 150))
            screen.blit(start_game_words, (246, 310))
            screen.blit(close_game_words, (246, 350))
        pygame.display.update()
        fps_clock.tick(snake.speed)


if __name__ == '__main__':
    main()
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154

---

总结

大家喜欢的话，给个