@Nadnerb: Please forget that waveset transparency problem for the moment - but keep it in mind!
I was trying that envmap thing. But I did forget, that envmaps cause horrible lags each few seconds in my age.
So I decided to change my original idea and have changed the whole room into something different. Screenshot will follow in a few days. I'm not finished yet. But it looks 100 times better that my first idea. You'll be surprised!
