I have seen it before, just not in Gamemode 4. So I searched for Command Block Creations, that have the functionality of a Vacuum Hopper, and I found this Video from Jragon: Vacuum Hoppers in 1 Command. Credit, where Credit is due, right?My Module here is made of 20 Command Blocks + Hopper Clock, with the Dimensions: 6*2*2
What I tinkered together here takes Inspiration from Jragon, but also from the Custom Crafter Base Module. You will need that Module (I used the 1.8 Version) for two Materials needed.
Inside a Hopper you need 2 Compressed Iron and 1 Singularity Gem, plus 2 Enderpearls, like this:
Then you need to throw an Eye of Ender onto the Hopper, which then Makes the Vacuum Hopper:
The Idea is, you create a miniature Black Hole that has an attractive Force on every Item in a Radius of 5 Blocks. The Lore on the Items is a bit Silly, but hey..
I made a 1-Click that can be found here: http://pastebin.com/ikcPVMmv
No Scoreboard objective is needed. The scoreboard players tag function does the job just fine. The Armor Stand gets the Custom Name: GM4_VacuumHopper
That´s about it, really. Play around with the Module and have fun. ;)