save project

snake.py

@@ -29,4 +29,19 @@ while True:
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面
-    pygame.display.update()
\ No newline at end of file
+pygame.display.update()
+
+
+if setheading == "right":
+    x += 30
+elif setheading=="left":
+    x -=30
+elif setheading=="up":
+    y -= 30
+elif:
+    y += 30
+    position.append((x,y))
+    if x==apple_x and y== apple_y:
+        apple_x=randint(0,660)
+        apple_y=randint(0,480)
+        
\ No newline at end of file