save project

snake.py

@@ -12,17 +12,49 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+lift = pygame.image.load('lift.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()
-    x+=30
+        elif event == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading !="left"
+            setheading = "right"
+            if event.key == locals.K_LEFT and setheading !="right"
+            setheading = "left"
+            if event.key == locals.K_UP and setheading !="down"
+            setheading = "up"
+            if event.key == locals.K_DOWN and setheading !="up"
+            setheading = "down"
+            snake_head = down
+
+
+
+elif setheading =="right":
+    x += 30
+elif setheading =="left":
+    x -= 30
+elif setheading =="up":
+    y -= 30
+elif setheading =="right":
+    y += 30
+
+
+
+
+    position.append((x,y))
+    position.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,position[-1])
     # 将贪吃蛇的身体画上去
     screen.blit(body, (210, 120))
     screen.blit(body, (180, 120))