Its not a bug, but I think it would be better if the cray ray stop when it hits something. 

Like, if theres a piece of metl in the way of the ray, it shouldn't keep making points of the defined ctype after it, and also shouldnt destroy whats in the way. 

It is currently:

.         METL                                :CREY

.---------METL-----(<<ray of crey)----- :CREY

.---------        ------------------------------- :CREY

(METL was destroyed :(  )

And in my opinion would be better if:

.           METL-----(<<ray of crey)----- :CREY

.           METL------------------------------ :CREY

(METL wasn't destroyed and the ray stopped there - on the first found particle)

oh, ok. 

But its still very wierd when i use metl. 

Anywas, tnks.