-
Notifications
You must be signed in to change notification settings - Fork 0
/
snake.py
201 lines (177 loc) · 6.71 KB
/
snake.py
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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
## 导入相关模块
import random
import pygame
import sys
from pygame.locals import *
snake_speed = 15 #贪吃蛇的速度
windows_width = 800
windows_height = 600 #游戏窗口的大小
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
''' #初始化区
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
'''
map_width = int(windows_width / cell_size)
map_height = int(windows_height / cell_size)
# 颜色定义
white = (255, 255, 255)
black = (0, 0, 0)
gray = (230, 230, 230)
dark_gray = (40, 40, 40)
DARKGreen = (0, 155, 0)
Green = (0, 255, 0)
Red = (255, 0, 0)
blue = (0, 0, 255)
dark_blue =(0,0, 139)
BG_COLOR = black #游戏背景颜色
# 定义方向
UP = 1
DOWN = 2
LEFT = 3
RIGHT = 4
HEAD = 0 #贪吃蛇头部下标
#主函数
def main():
pygame.init() # 模块初始化
snake_speed_clock = pygame.time.Clock() # 创建Pygame时钟对象
screen = pygame.display.set_mode((windows_width, windows_height)) #
screen.fill(white)
pygame.display.set_caption("Python 贪吃蛇小游戏") #设置标题
show_start_info(screen) #欢迎信息
while True:
running_game(screen, snake_speed_clock)
show_gameover_info(screen)
#游戏运行主体
def running_game(screen,snake_speed_clock):
startx = random.randint(3, map_width - 8) #开始位置
starty = random.randint(3, map_height - 8)
snake_coords = [{'x': startx, 'y': starty}, #初始贪吃蛇
{'x': startx - 1, 'y': starty},
{'x': startx - 2, 'y': starty}]
direction = RIGHT # 开始时向右移动
food = get_random_location() #实物随机位置
while True:
for event in pygame.event.get():
if event.type == QUIT:
terminate()
elif event.type == KEYDOWN:
if (event.key == K_LEFT or event.key == K_a) and direction != RIGHT:
direction = LEFT
elif (event.key == K_RIGHT or event.key == K_d) and direction != LEFT:
direction = RIGHT
elif (event.key == K_UP or event.key == K_w) and direction != DOWN:
direction = UP
elif (event.key == K_DOWN or event.key == K_s) and direction != UP:
direction = DOWN
elif event.key == K_ESCAPE:
terminate()
move_snake(direction, snake_coords) #移动蛇
ret = snake_is_alive(snake_coords)
if not ret:
break #蛇跪了. 游戏结束
snake_is_eat_food(snake_coords, food) #判断蛇是否吃到食物
screen.fill(BG_COLOR)
#draw_grid(screen)
draw_snake(screen, snake_coords)
draw_food(screen, food)
draw_score(screen, len(snake_coords) - 3)
pygame.display.update()
snake_speed_clock.tick(snake_speed) #控制fps
#将食物画出来
def draw_food(screen, food):
x = food['x'] * cell_size
y = food['y'] * cell_size
appleRect = pygame.Rect(x, y, cell_size, cell_size)
pygame.draw.rect(screen, Red, appleRect)
#将贪吃蛇画出来
def draw_snake(screen, snake_coords):
for coord in snake_coords:
x = coord['x'] * cell_size
y = coord['y'] * cell_size
wormSegmentRect = pygame.Rect(x, y, cell_size, cell_size)
pygame.draw.rect(screen, dark_blue, wormSegmentRect)
wormInnerSegmentRect = pygame.Rect( #蛇身子里面的第二层亮绿色
x + 4, y + 4, cell_size - 8, cell_size - 8)
pygame.draw.rect(screen, blue, wormInnerSegmentRect)
#画网格(可选)
def draw_grid(screen):
for x in range(0, windows_width, cell_size): # draw 水平 lines
pygame.draw.line(screen, dark_gray, (x, 0), (x, windows_height))
for y in range(0, windows_height, cell_size): # draw 垂直 lines
pygame.draw.line(screen, dark_gray, (0, y), (windows_width, y))
#移动贪吃蛇
def move_snake(direction, snake_coords):
if direction == UP:
newHead = {'x': snake_coords[HEAD]['x'], 'y': snake_coords[HEAD]['y'] - 1}
elif direction == DOWN:
newHead = {'x': snake_coords[HEAD]['x'], 'y': snake_coords[HEAD]['y'] + 1}
elif direction == LEFT:
newHead = {'x': snake_coords[HEAD]['x'] - 1, 'y': snake_coords[HEAD]['y']}
elif direction == RIGHT:
newHead = {'x': snake_coords[HEAD]['x'] + 1, 'y': snake_coords[HEAD]['y']}
snake_coords.insert(0, newHead)
#判断蛇死了没
def snake_is_alive(snake_coords):
tag = True
if snake_coords[HEAD]['x'] == -1 or snake_coords[HEAD]['x'] == map_width or snake_coords[HEAD]['y'] == -1 or \
snake_coords[HEAD]['y'] == map_height:
tag = False # 蛇碰壁啦
for snake_body in snake_coords[1:]:
if snake_body['x'] == snake_coords[HEAD]['x'] and snake_body['y'] == snake_coords[HEAD]['y']:
tag = False # 蛇碰到自己身体啦
return tag
#判断贪吃蛇是否吃到食物
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。
if snake_coords[HEAD]['x'] == food['x'] and snake_coords[HEAD]['y'] == food['y']:
food['x'] = random.randint(0, map_width - 1)
food['y'] = random.randint(0, map_height - 1) # 实物位置重新设置
else:
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
#食物随机生成
def get_random_location():
return {'x': random.randint(0, map_width - 1), 'y': random.randint(0, map_height - 1)}
#开始信息显示
def show_start_info(screen):
font = pygame.font.Font('myfont.ttf', 40)
tip = font.render('按任意键开始游戏~~~', True, (65, 105, 225))
gamestart = pygame.image.load('start.jpg')
screen.blit(gamestart, (140, 30))
screen.blit(tip, (240, 550))
pygame.display.update()
while True: #键盘监听事件
for event in pygame.event.get(): # event handling loop
if event.type == QUIT:
terminate() #终止程序
elif event.type == KEYDOWN:
if (event.key == K_ESCAPE): #终止程序
terminate() #终止程序
else:
return #结束此函数, 开始游戏
#游戏结束信息显示
def show_gameover_info(screen):
font = pygame.font.Font('myfont.ttf', 40)
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))
gamestart = pygame.image.load('over.jpg')
screen.blit(gamestart, (60, 0))
screen.blit(tip, (80, 300))
pygame.display.update()
while True: #键盘监听事件
for event in pygame.event.get(): # event handling loop
if event.type == QUIT:
terminate() #终止程序
elif event.type == KEYDOWN:
if event.key == K_ESCAPE or event.key == K_q: #终止程序
terminate() #终止程序
else:
return #结束此函数, 重新开始游戏
#画成绩
def draw_score(screen,score):
font = pygame.font.Font('myfont.ttf', 30)
scoreSurf = font.render('得分: %s' % score, True, Green)
scoreRect = scoreSurf.get_rect()
scoreRect.topleft = (windows_width - 120, 10)
screen.blit(scoreSurf, scoreRect)
#程序终止
def terminate():
pygame.quit()
sys.exit()
main()