save project

snake.py

@@ -52,6 +52,8 @@ while True:
         y -= 30
     else:
         y += 30
+    if x < 0 or y < 0 or x > 630 or y > 450:
+        exit()
     position.append((x, y))
     # 将背景图画上去
     screen.blit(background, (0, 0))
@@ -60,7 +62,7 @@ while True:
         unm2 = random.randint(0,15) 
         apple_x = unm1*30
         apple_y = unm2*30
-        score += 1
+        score += 100
     else:
         position.pop(0)       
     # 将贪吃蛇的头画上去