Custom item for a scenario?

[RunAge]

Hello, I try make a tower defense scenario and i don't want to check every time when player place a structure because optimization(xD) and I need a item like transport belt, entity can go pass thru but player can't build on it. Ether I don't want make a separate mod for specify scenario because every player must download it. Can I modify/create a custom item in scenario if yes, how can I do that?

[Klonan]

Hello, I try make a tower defense scenario and i don't want to check every time when player place a structure because optimization(xD) and I need a item like transport belt, entity can go pass thru but player can't build on it. Ether I don't want make a separate mod for specify scenario because every player must download it. Can I modify/create a custom item in scenario if yes, how can I do that?

Unfortunately it can't be done

Checking every time a player builds an entity isn't such an expensive thing, and in a small scenario like a tower defense, won't really impact performance enough to make a difference

[RunAge]

@Klonan Ty for reply. I will try with checking.

[darkfrei]

entity can go pass thru but player can't build on it

Loaders?