save project

snake.py

@@ -58,13 +58,17 @@ while True:
         y += 30
         y += 30
     
     
     position.append((x, y))
     position.append((x, y))
+
     if x==apple_x and y==apple_y:
     if x==apple_x and y==apple_y:
         n1=random.randint(1,22)
         n1=random.randint(1,22)
         n2=random.randint(1,16)
         n2=random.randint(1,16)
         apple_x=n1*30-30
         apple_x=n1*30-30
         apple_y=n2*30-30
         apple_y=n2*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