Python贪吃蛇小游戏

贪吃蛇

1. 导入游戏库

# 1.导入库
import pgzrun
import random

2.游戏初始化

# 2.初始化
# 窗口大小
WIDTH = 600
HEIGHT = 480
# 贪吃蛇
bodys = [ [100,100],[80,100], [60,100], [40,100], [20,100]]
head = [100,100]
d = 'right'
# 食物
food = [290,290]
# 得分
score=0

3.游戏窗口绘制

def draw():
#清空屏幕
screen.clear()
# 绘制网格
for i in range(1,24):
screen.draw.line((0,i*20),(600,i*20),'gray')
for i in range(1,30):
screen.draw.line((i*20,0),(i*20,480),'gray')
#绘制蛇
for body in bodys:
rect = Rect(body,(20,20))
screen.draw.filled_rect(rect,(0,0,255))
inner = [body[0]+2,body[1]+2]
rect = Rect(inner, (15, 15),center='center')
screen.draw.filled_rect(rect, (0, 0, 180))
# 绘制头
rect = Rect(head, (20, 20))
screen.draw.filled_rect(rect, (0, 200,0))
inner = [head[0] + 2, head[1] + 2]
rect = Rect(inner, (15, 15))
screen.draw.filled_rect(rect, (0, 255, 12))
# 绘制食物
screen.draw.filled_circle(food,10, '#ffddee')
# 绘制得分
screen.draw.text('score:'+str(score),(20, 20), color="orange",fontsize=30)

4.蛇的移动功能

def run():
global food,d,head,bodys,score
# 新增一个格子的身体
if d=='right':
head[0] += 20
elif d=='left':
head[0] -= 20
elif d=='up':
head[1] -= 20
else:
head[1] += 20
bodys.insert(0,list(head))
if head[0] == food[0]-10 and head[1] == food[1] - 10:
food = [random.randint(1,30)*20-10,random.randint(1,20)*20-10]
score+=1
if score>3:
clock.unschedule(run)
clock.schedule_interval(run, 0.1)
else:
bodys.pop()
# 撞墙后重新开始
if head[0]<0 or head[0]>580 or head[1]<0 or head[1]>480 or head in
bodys[1:]:
# 蛇回到初始位置
bodys = [[100, 100], [80, 100], [60, 100], [40, 100], [20, 100]]
head = [100, 100]
# 方向向右
d = 'right'
# 得分清零
score=0
clock.unschedule(run)
clock.schedule_interval(run, 0.3)

5.按键控制蛇的行走方向

# 按键控制蛇的行走方向
def on_key_down(key):
global d
# 改变方向
if key == keys.DOWN and d != 'up':
d = 'down'
if key == keys.UP and d != 'down':
d = 'up'
if key == keys.LEFT and d != 'right':
d = 'left'
if key == keys.RIGHT and d != 'left':
d = 'right'

6.启动游戏

# 定时设置
clock.schedule_interval(run, 0.3)
# 播放音乐
music.play('music.mp3')
# 启动游戏
pgzrun.go()