save project

snake.py

@@ -12,13 +12,40 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
 x,y = 240, 120
 position = [(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()
+        elif event,type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading != "left":
+                setheading = "right"
+                snake_head = right
+            elif event.key == locals.K_LEFT and setheading != "right":
+                setheading = "left"
+                snake_head = left
+            elif event.key == locals.K_UP and setheading != "down":
+                setheading = "up"
+                snake_head = up
+            else:
+                setheading = "down"
+                snake_head = down
+        if seatheading == "right":
+            x+=30
+        elif seatheading == "left":
+            x-=30
+        elif seatheading == "up":
+            y-=30
+        else:
+            y+=30
+    x=x+30
     y=y+30
     position.append((x,y))
     position.pop(0)