How do I check object visibility in expression

Quick question - I noticed that objects in C2 have "Opacity" property, but there is no "Visibility" or "IsVisible" property.

Why? Or am I missing something?

I want to be able to check visibility in formulas, something like this:

Score =  (Enemy.Health>0 & Enemy.IsVisible ? 5 : 1)[/code:wyj4l589]

I know I can do the same by creating different conditions (Enemy Is Visible -> do this, Enemy Is Not Visible -> do that), but it makes the code much more cluttered - I'll end with 5 or 6 lines of code instead of 1.

I sometimes set it to either 0 or 100 opacity if it is something small and doesn't need to be destroyed

Yeah, changing opacity is a possible workaround, however today I needed to compare both opacity and visibility, hence this post..

I'm just wondering why such simple and obvious property doesn't exist.