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比如说我有三个按钮，按一个销毁一个，三个全都按完之后就会出现一个关闭关卡的按钮，这样要怎么写事件呢?
count这个表达式会返回对象在当前场景的剩余实例数量，假设你这三个按钮是不同对象，且销毁完之后没有同对象的按钮实例了，那就用三个比较两值（系统组件的条件），然后 按钮A对象名.count=0、按钮B对象名.count=0 且 按钮C对象名.count=0时，显示一个关闭关卡的按钮就行了
感谢大佬!这就去试试看