save project

snake.py

@@ -19,6 +19,8 @@ down = pygame.image.load('down.png')        # 头 朝下
 
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
+apple_x = 360
+apple_y = 300
 
 setheading = "right"
 snake_head = right
@@ -52,10 +54,15 @@ while True:
     else:
         y += 30
     position.append((x, y))
-    position.pop(0)
     # 将背景图画上去
-    screen.blit(background, (0, 0))
+    if x == apple_x and y == apple_y:
+        apple_x = random.randint(0, 660)
+        apple_y = random.randint(0, 480)
+
+    position.pop(0)
     # 将贪吃蛇的头画上去
+    screen.blit(background, (0, 0))
+    
     screen.blit(snake_head, position[-1])
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):