Thanks to the unholy union of Black Mesa and Aperture Science, the fusion of their most coveted creations has spawned the Portivity Gun. It functions just like both devices in every way. However to toggle the device between modes, one must only tap down on the crouch button.
To implement the device into your personal test chamber, simply drop the tool directly where the test participant begins their journey. But if you wish place the tool elsewhere, attach the gun_collision to it's assigned pedastal

File Name: Portivity Gun V3.zip
File Size: 24.37 KiB
Click here to download The Portivity Gun (Portals+Gravity)

Does the gravity gun still work through walls, or is that fixed?

well it uses trigger_push and vphysics_motion and those kinda phase through walls, so yeah, it still does that. If I could figure out how to filter out what the thing picks up that would be cool.

If you know of any way, that would be great

I've been working on a different method, but right now it lags horribly when you try to pull something from the other side of a portal.

a number of ideas come to mind, but they all mean extensively massive amounts of additional entities that are completely unrealistic and ultimately counter-productive, I bet that's somewhere you are finding yourself right now, eh?

I updated the gun to utilize the original viewmodels