I want a zombie spawner to be under my floor, and for the zombies to see me on my floor (their ceiling) and to get them to come after me (via stairs). The only floor I came up with was:
XOXOXOX
XXXXXXX
XOXOXOX
XXXXXXX
XOXOXOX
where "X" is an iron bar and "O" is a slab. It seems to work ok. Wondering if any other ideas? I think the middle iron bars aren't transparent to the zombies and obviously the slabs are not transparent.
When the iron bar is next to the slab, it doesn't connect, leaving a gap, and this gap is transparent to the zombies, while still allowing me to walk without falling.
EDIT: by staggering them differently, there is no longer any iron bars that aren't transparent, but instead of each one that wasn't, now I have 2 iron bars that are half transparent, which is a slight improvement as it is now more likely for a zombie to see around that.
XOXOXOX
XXXXXXX
OXOXOXO
XXXXXXX
XOXOXOX