save project

snake.py

@@ -12,21 +12,46 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+l=pygame.image.load('left.png')
+u=pygame.image.load('up.png')
+d=pygame.image.load('down.png')
 x,y=240,120
 a=pygame.time.Clock()
 p=[(180, 90),(180, 120),(210, 120),(x,y)]
+setheading="right"
+snake_head=right
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-    x+=30
+        if event.type==locals.KEYDOWN:
+            if event.key==locals.K_RIGHT and setheading !="left":
+                setheading='right'
+                snake_head=right
+            if event.key==locals.K_LEFT and setheading !="right":
+                setheading='left'
+                snake_head=l
+            if event.key==locals.K_UP and setheading !="down":
+                setheading='up'
+                snake_head=u
+            if event.key==locals.K_DOWN and setheading !="up":
+                setheading='down'
+                snake_head=d
+    if setheading =="right":
+        x+=30
+    elif setheading =="left":
+        x-=30
+    elif setheading =="up":
+        y-=30
+    elif setheading =="down":
+        y+=30
     p.append((x,y))
     p.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(snake_head, (x, y))
     # 将贪吃蛇的身体画上去
     for i in range(len(p)-1):
         screen.blit(body, p[i])