pygame入门之一:贪吃蛇

发表于 | 更新于: | 分类于 | | 阅读数
字数统计: 1.2k | 阅读时长 ≈ 7

游戏截图

0926-1

0926-2

引入库

1
2
3
4
import copy
import random
import sys
import pygame

初始化模型

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
# 蛇模型
snake_list = [[10, 10]]

# 食物的模型
x = random.randint(10, 490)
y = random.randint(10, 490)
food_point = [x, y]
food_r, food_g, food_b = random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)
food_color = pygame.Color(food_r, food_g, food_b)

# 初始方向
move_up = False
move_down = False
move_left = False
move_right = True

# 初始分数
score=0

pygame.init()
screen = pygame.display.set_mode((500, 500))    # 画布大小
title = pygame.display.set_caption('贪吃蛇')   # 名字
clock = pygame.time.Clock() # 游戏时钟

获取键盘事件

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
for event in pygame.event.get():    # 获取键盘事件
    if event.type == pygame.QUIT:
        running=False
        sys.exit()
    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_DOWN or event.key == pygame.K_s:
            move_up = False
            move_down = True
            move_left = False
            move_right = False
        if event.key == pygame.K_UP or event.key == pygame.K_w:
            move_up = True
            move_down = False
            move_left = False
            move_right = False
        if event.key == pygame.K_LEFT or event.key == pygame.K_a:
            move_up = False
            move_down = False
            move_left = True
            move_right = False
        if event.key == pygame.K_RIGHT or event.key == pygame.K_d:
            move_up = False
            move_down = False
            move_left = False
            move_right = True
        if event.key == pygame.K_ESCAPE:    # esc关闭
            running=False
            sys.exit()
        if event.key ==pygame.K_SPACE and not running:
            running=True
            snake_list = [[10, 10]]
            score=0

移动贪吃蛇

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
# 身子移动
   snake_len = len(snake_list) - 1
   while snake_len > 0:
       snake_list[snake_len] = copy.deepcopy(snake_list[snake_len - 1])
       snake_len -= 1

   # 蛇头移动
   if move_up:
       snake_list[snake_len][1] -= 10
       if snake_list[snake_len][1] < 0:
           snake_list[snake_len][1] = 500

   if move_down:
       snake_list[snake_len][1] += 10
       if snake_list[snake_len][1] > 500:
           snake_list[snake_len][1] = 0

   if move_left:
       snake_list[snake_len][0] -= 10
       if snake_list[snake_len][0] < 0:
           snake_list[snake_len][0] = 500

   if move_right:
       snake_list[snake_len][0] += 10
       if snake_list[snake_len][0] > 500:
           snake_list[snake_len][0] = 0

吃食物逻辑

1
2
3
4
5
6
7
8
# 蛇与食物碰撞检测
if food_rect.collidepoint(snake_pos):
    snake_list.append(food_point)
    food_point = [random.randint(10, 490), random.randint(10, 490)] # 重新生成食物
    food_r, food_g, food_b = random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)
    food_color = pygame.Color(food_r, food_g, food_b)
    score+=1
    break

碰撞到自身逻辑

1
2
3
4
5
6
7
# 吃到自己 结束游戏
snake_head_rect = snake_rect[0] # 蛇头
count = len(snake_rect)
while count > 1:
	if snake_head_rect.colliderect(snake_rect[count - 1]): # 检测蛇头与身子的所有点
		running=False
	count -= 1

结束游戏

1
2
3
if not running:
    show_text(screen, (20,200), 'GAME OVER!', (227, 29, 18), False, 100)
    show_text(screen, (120,300), 'press space to try again', (223, 223, 223), False, 30)

显示文字函数

1
2
3
4
5
6
def show_text(screen, pos, text, color, font_bold=False, font_size=60, font_italic=False):
    cur_font = pygame.font.SysFont('宋体', font_size)
    cur_font.set_bold(font_bold)
    cur_font.set_italic(font_italic)
    text_fmt = cur_font.render(text, 1, color)
    screen.blit(text_fmt, pos)

完整代码

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
import copy
import random
import sys
import pygame


def show_text(screen, pos, text, color, font_bold=False, font_size=60, font_italic=False):
    cur_font = pygame.font.SysFont('宋体', font_size)
    cur_font.set_bold(font_bold)
    cur_font.set_italic(font_italic)
    text_fmt = cur_font.render(text, 1, color)
    screen.blit(text_fmt, pos)

# 蛇模型
snake_list = [[10, 10]]

# 食物的模型
x = random.randint(10, 490)
y = random.randint(10, 490)
food_point = [x, y]
food_r, food_g, food_b = random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)
food_color = pygame.Color(food_r, food_g, food_b)

# 初始方向
move_up = False
move_down = False
move_left = False
move_right = True

pygame.init()
screen = pygame.display.set_mode((500, 500))    # 画布大小
title = pygame.display.set_caption('贪吃蛇')   # 名字
clock = pygame.time.Clock() # 游戏时钟

running=True    # 游戏运行标志
score=0
while True:
    clock.tick(20)  # 20fps
    screen.fill([255, 255, 255])    # 背景填充
    for event in pygame.event.get():    # 获取键盘事件
        if event.type == pygame.QUIT:
            running=False
            sys.exit()
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_DOWN or event.key == pygame.K_s:
                move_up = False
                move_down = True
                move_left = False
                move_right = False
            if event.key == pygame.K_UP or event.key == pygame.K_w:
                move_up = True
                move_down = False
                move_left = False
                move_right = False
            if event.key == pygame.K_LEFT or event.key == pygame.K_a:
                move_up = False
                move_down = False
                move_left = True
                move_right = False
            if event.key == pygame.K_RIGHT or event.key == pygame.K_d:
                move_up = False
                move_down = False
                move_left = False
                move_right = True
            if event.key == pygame.K_ESCAPE:    # esc关闭
                running=False
                sys.exit()
            if event.key ==pygame.K_SPACE and not running:
                running=True
                snake_list = [[10, 10]]
                score=0

    # 身子移动
    snake_len = len(snake_list) - 1
    while snake_len > 0:
        snake_list[snake_len] = copy.deepcopy(snake_list[snake_len - 1])
        snake_len -= 1

    # 蛇头移动
    if move_up:
        snake_list[snake_len][1] -= 10
        if snake_list[snake_len][1] < 0:
            snake_list[snake_len][1] = 500

    if move_down:
        snake_list[snake_len][1] += 10
        if snake_list[snake_len][1] > 500:
            snake_list[snake_len][1] = 0

    if move_left:
        snake_list[snake_len][0] -= 10
        if snake_list[snake_len][0] < 0:
            snake_list[snake_len][0] = 500

    if move_right:
        snake_list[snake_len][0] += 10
        if snake_list[snake_len][0] > 500:
            snake_list[snake_len][0] = 0

    if running:
        # 绘制得分
        show_text(screen, (200,20), f'score: {score}', (0, 0, 0), False, 30)
        # 绘制食物
        food_rect = pygame.draw.circle(screen, food_color, food_point, 15)
        # 绘制蛇
        snake_rect = []
        for snake_pos in snake_list:
            snake_rect.append(pygame.draw.circle(screen, food_color, snake_pos, 5))

            # 蛇与食物碰撞检测
            if food_rect.collidepoint(snake_pos):
                snake_list.append(food_point)
                food_point = [random.randint(10, 490), random.randint(10, 490)] # 重新生成食物
                food_r, food_g, food_b = random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)
                food_color = pygame.Color(food_r, food_g, food_b)
                score+=1
                break



    # 吃到自己 结束游戏
    snake_head_rect = snake_rect[0] # 蛇头
    count = len(snake_rect)
    while count > 1:
        if snake_head_rect.colliderect(snake_rect[count - 1]): # 检测蛇头与身子的所有点
            running=False
        count -= 1

    if not running:
        show_text(screen, (20,200), 'GAME OVER!', (227, 29, 18), False, 100)
        show_text(screen, (120,300), 'press space to try again', (223, 223, 223), False, 30)
    pygame.display.update()  # 绘制
不要打赏，只求关注呀QAQ