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Re:Valve confirm Half-Life: Alyx, a VR game being revealed o... by derefr on Tuesday November 19, 2019 @11:48AM (#21575049)
It’s a technology for simulating the interactions of these things. Point the paint gun in Portal 2 through a portal into an area with different gravity and you’ll see something that required the invention of novel tech. That system “worked” since Portal 1; they just didn’t fully explore it in Portal 1.
Re:Valve confirm Half-Life: Alyx, a VR game being revealed o... by soulofmischief on Tuesday November 19, 2019 @12:49PM (#21575849)
Every game mechanic requires a technology behind it. However, the mechanics you described did not require new technology. It was simply a novel application of existing technology. It doesn't fit in with the rest of your tenuous examples.
Re:Valve confirm Half-Life: Alyx, a VR game being revealed o... by meheleventyone on Tuesday November 19, 2019 @12:33PM (#21575636)
That technology has worked since at least Quake FWIW! Shooting rockets through teleporters into zones with different gravity.

Both Portal games are cool though.