auto save

snake.py

@@ -12,9 +12,13 @@ timelimit=pygame.time.Clock()
 # 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-
+setheading="right"
+snake_head=right
 x,y=240,120
 
 location=[(180,90),(180,120),(210,120),(x,y)]
@@ -25,13 +29,34 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-    x=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=left
+            if event.key==locals.K_UP and setheading!='down':
+                setheading="up"
+                snake_head=up
+            if event.key==locals.K_DOWN and setheading!='up':
+                setheading="down"
+                snake_head=down
+    if setheading=="right":
+        x+=30
+    elif setheading=="left":
+        x-=30
+    elif setheading=="up":
+        y-=30
+    else:
+        y+=30
+
     location.append((x,y))
     location.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
     '''
     screen.blit(body, (210, 120))
@@ -45,4 +70,4 @@ while True:
     # 刷新画面
     pygame.display.update()
 
-    timelimit.tick(3)
\ No newline at end of file
+    timelimit.tick(5)
\ No newline at end of file