save project

snake.py

@@ -58,16 +58,18 @@ while True:
     else:
     else:
         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:
         apple_y = random.randint(0,660)
         apple_y = random.randint(0,660)
         apple_x = random.randint(0,480)
         apple_x = random.randint(0,480)
         num1 = random.randint(1,22)
         num1 = random.randint(1,22)
         num2 = random.randint(1,16)  
         num2 = random.randint(1,16)  
+        score += 10
     else:
     else:
         position.pop(0)
         position.pop(0)
     # 将背景图画上去
     # 将背景图画上去
-
+    if x < 0 or x > 630 or y < 0 or y > 450:
+        exit()
     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
     screen.blit(snake_head, position[-1])
     screen.blit(snake_head, position[-1])