save project

snake.py

@@ -57,10 +57,14 @@ while True:
     if x==apple_x and y==apple_y:
     if x==apple_x and y==apple_y:
         num1=random.randint(1,22)
         num1=random.randint(1,22)
         num2=random.randint(1,16)
         num2=random.randint(1,16)
-        apple_x=random.randint(0,660)
-        apple_y=random.randint(0,480)
+        apple_x=num1*30-30
+        apple_y=num1*30-30
+        score+=10
     else:
     else:
         position.pop(0)
         position.pop(0)
+    if x<0 or x>630 or y<0 or y>450:
+        exit()
+
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     # 将贪吃蛇的头画上去