save project

snake.py

@@ -55,9 +55,11 @@ while True:
         y += 30
     position.append((x, y))
     if apple_x==x and apple_y==y:
-        apple_x=random.randint(0,660)
-        apple_y=random.randint(0,480)
-
+        num1=random.randint(1,22)    
+        num2=random.randint(1,16)
+        apple_x=num1*30-30
+        apple_y=num2*30-30
+    else:
         position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
@@ -66,7 +68,6 @@ while True:
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body, position[i])
-
     # 将果实画上去
     screen.blit(food, (apple_x, apple_y))
     # 刷新画面