Skip to content

Commit 08efe58

Browse files
hellgoddesshellgoddess
authored
Update snake.py
1 parent 77ecda4 commit 08efe58

1 file changed

Lines changed: 190 additions & 1 deletion

File tree

‎code/snake.py‎

Lines changed: 190 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1 +1,190 @@
1-
z
1+
## 导入相关模块
2+
import random
3+
import pygame
4+
import sys
5+
6+
from pygame.locals import *
7+
8+
9+
snake_speed = 15 #贪吃蛇的速度
10+
windows_width = 800
11+
windows_height = 600 #游戏窗口的大小
12+
cell_size = 20 #贪吃蛇身体方块大小,注意身体大小必须能被窗口长宽整除
13+
14+
''' #初始化区
15+
由于我们的贪吃蛇是有大小尺寸的, 因此地图的实际尺寸是相对于贪吃蛇的大小尺寸而言的
16+
'''
17+
map_width = int(windows_width / cell_size)
18+
map_height = int(windows_height / cell_size)
19+
20+
# 颜色定义
21+
white = (255, 255, 255)
22+
black = (0, 0, 0)
23+
gray = (230, 230, 230)
24+
dark_gray = (40, 40, 40)
25+
DARKGreen = (0, 155, 0)
26+
Green = (0, 255, 0)
27+
Red = (255, 0, 0)
28+
blue = (0, 0, 255)
29+
dark_blue =(0,0, 139)
30+
31+
32+
BG_COLOR = black #游戏背景颜色
33+
34+
# 定义方向
35+
UP = 1
36+
DOWN = 2
37+
LEFT = 3
38+
RIGHT = 4
39+
40+
HEAD = 0 #贪吃蛇头部下标
41+
#主函数
42+
def main():
43+
pygame.init() # 模块初始化
44+
snake_speed_clock = pygame.time.Clock() # 创建Pygame时钟对象
45+
screen = pygame.display.set_mode((windows_width, windows_height)) #
46+
screen.fill(white)
47+
48+
pygame.display.set_caption("Python 贪吃蛇小游戏") #设置标题
49+
show_start_info(screen) #欢迎信息
50+
while True:
51+
running_game(screen, snake_speed_clock)
52+
show_gameover_info(screen)
53+
#游戏运行主体
54+
def running_game(screen,snake_speed_clock):
55+
startx = random.randint(3, map_width - 8) #开始位置
56+
starty = random.randint(3, map_height - 8)
57+
snake_coords = [{'x': startx, 'y': starty}, #初始贪吃蛇
58+
{'x': startx - 1, 'y': starty},
59+
{'x': startx - 2, 'y': starty}]
60+
61+
direction = RIGHT # 开始时向右移动
62+
63+
food = get_random_location() #实物随机位置
64+
65+
while True:
66+
for event in pygame.event.get():
67+
if event.type == QUIT:
68+
terminate()
69+
elif event.type == KEYDOWN:
70+
if (event.key == K_LEFT or event.key == K_a) and direction != RIGHT:
71+
direction = LEFT
72+
elif (event.key == K_RIGHT or event.key == K_d) and direction != LEFT:
73+
direction = RIGHT
74+
elif (event.key == K_UP or event.key == K_w) and direction != DOWN:
75+
direction = UP
76+
elif (event.key == K_DOWN or event.key == K_s) and direction != UP:
77+
direction = DOWN
78+
elif event.key == K_ESCAPE:
79+
terminate()
80+
81+
move_snake(direction, snake_coords) #移动蛇
82+
83+
ret = snake_is_alive(snake_coords)
84+
if not ret:
85+
break #蛇跪了. 游戏结束
86+
snake_is_eat_food(snake_coords, food) #判断蛇是否吃到食物
87+
88+
screen.fill(BG_COLOR)
89+
#draw_grid(screen)
90+
draw_snake(screen, snake_coords)
91+
draw_food(screen, food)
92+
draw_score(screen, len(snake_coords) - 3)
93+
pygame.display.update()
94+
snake_speed_clock.tick(snake_speed) #控制fps
95+
#将食物画出来
96+
def draw_food(screen, food):
97+
x = food['x'] * cell_size
98+
y = food['y'] * cell_size
99+
appleRect = pygame.Rect(x, y, cell_size, cell_size)
100+
pygame.draw.rect(screen, Red, appleRect)
101+
#将贪吃蛇画出来
102+
def draw_snake(screen, snake_coords):
103+
for coord in snake_coords:
104+
x = coord['x'] * cell_size
105+
y = coord['y'] * cell_size
106+
wormSegmentRect = pygame.Rect(x, y, cell_size, cell_size)
107+
pygame.draw.rect(screen, dark_blue, wormSegmentRect)
108+
wormInnerSegmentRect = pygame.Rect( #蛇身子里面的第二层亮绿色
109+
x + 4, y + 4, cell_size - 8, cell_size - 8)
110+
pygame.draw.rect(screen, blue, wormInnerSegmentRect)
111+
#移动贪吃蛇
112+
def move_snake(direction, snake_coords):
113+
if direction == UP:
114+
newHead = {'x': snake_coords[HEAD]['x'], 'y': snake_coords[HEAD]['y'] - 1}
115+
elif direction == DOWN:
116+
newHead = {'x': snake_coords[HEAD]['x'], 'y': snake_coords[HEAD]['y'] + 1}
117+
elif direction == LEFT:
118+
newHead = {'x': snake_coords[HEAD]['x'] - 1, 'y': snake_coords[HEAD]['y']}
119+
elif direction == RIGHT:
120+
newHead = {'x': snake_coords[HEAD]['x'] + 1, 'y': snake_coords[HEAD]['y']}
121+
122+
snake_coords.insert(0, newHead)
123+
#判断蛇死了没
124+
def snake_is_alive(snake_coords):
125+
tag = True
126+
if snake_coords[HEAD]['x'] == -1 or snake_coords[HEAD]['x'] == map_width or snake_coords[HEAD]['y'] == -1 or \
127+
snake_coords[HEAD]['y'] == map_height:
128+
tag = False # 蛇碰壁啦
129+
for snake_body in snake_coords[1:]:
130+
if snake_body['x'] == snake_coords[HEAD]['x'] and snake_body['y'] == snake_coords[HEAD]['y']:
131+
tag = False # 蛇碰到自己身体啦
132+
return tag
133+
#判断贪吃蛇是否吃到食物
134+
def snake_is_eat_food(snake_coords, food): #如果是列表或字典，那么函数内修改参数内容，就会影响到函数体外的对象。
135+
if snake_coords[HEAD]['x'] == food['x'] and snake_coords[HEAD]['y'] == food['y']:
136+
food['x'] = random.randint(0, map_width - 1)
137+
food['y'] = random.randint(0, map_height - 1) # 实物位置重新设置
138+
else:
139+
del snake_coords[-1] # 如果没有吃到实物, 就向前移动, 那么尾部一格删掉
140+
#食物随机生成
141+
def get_random_location():
142+
return {'x': random.randint(0, map_width - 1), 'y': random.randint(0, map_height - 1)}
143+
#开始信息显示
144+
def show_start_info(screen):
145+
font = pygame.font.Font('myfont.ttf', 40)
146+
tip = font.render('按任意键开始游戏~~~', True, (65, 105, 225))
147+
gamestart = pygame.image.load('gamestart.png')
148+
screen.blit(gamestart, (140, 30))
149+
screen.blit(tip, (240, 550))
150+
pygame.display.update()
151+
152+
while True: #键盘监听事件
153+
for event in pygame.event.get(): # event handling loop
154+
if event.type == QUIT:
155+
terminate() #终止程序
156+
elif event.type == KEYDOWN:
157+
if (event.key == K_ESCAPE): #终止程序
158+
terminate() #终止程序
159+
else:
160+
return #结束此函数, 开始游戏
161+
#游戏结束信息显示
162+
def show_gameover_info(screen):
163+
font = pygame.font.Font('myfont.ttf', 40)
164+
tip = font.render('按Q或者ESC退出游戏, 按任意键重新开始游戏~', True, (65, 105, 225))
165+
gamestart = pygame.image.load('gameover.png')
166+
screen.blit(gamestart, (60, 0))
167+
screen.blit(tip, (80, 300))
168+
pygame.display.update()
169+
170+
while True: #键盘监听事件
171+
for event in pygame.event.get(): # event handling loop
172+
if event.type == QUIT:
173+
terminate() #终止程序
174+
elif event.type == KEYDOWN:
175+
if event.key == K_ESCAPE or event.key == K_q: #终止程序
176+
terminate() #终止程序
177+
else:
178+
return #结束此函数, 重新开始游戏
179+
#画成绩
180+
def draw_score(screen,score):
181+
font = pygame.font.Font('myfont.ttf', 30)
182+
scoreSurf = font.render('得分: %s' % score, True, Green)
183+
scoreRect = scoreSurf.get_rect()
184+
scoreRect.topleft = (windows_width - 120, 10)
185+
screen.blit(scoreSurf, scoreRect)
186+
#程序终止
187+
def terminate():
188+
pygame.quit()
189+
sys.exit()
190+
main()

0 commit comments

Comments
 (0)