save project

snake.py

@@ -55,10 +55,13 @@ while True:
     else:
         y += 30
     position.append((x, y))
-    if x==apple_x and y==apple_y:
-        apple_x=random.randint(0,660)
-        apple_y=random.randint(0,480)
-    position.pop(0)
+    if x==apple_x and y==apple_y:    
+        num1=random.randint(1,22)
+        num2=random.randint(1,16)
+        apple_y=num2*30-30
+        apple_x=num1*30-30
+    else:
+        position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -71,4 +74,4 @@ while True:
     screen.blit(food, (apple_x, apple_y))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(5)
\ No newline at end of file