Screen space reflection is a technique for reusing screen space data to calculate reflections.
Floor reflection unity.
It is commonly used to create more subtle reflections such as on wet floor surfaces or in puddles.
Here s a quick tutorial on how to create realtime reflections in unity 5.
You can probably use this for more things like wall mirrors and multiple reflections in the same scene but that would require quite a bit more scripting magic.
From my understanding you create a material push the smoothness to 1 and then place a reflection probe in the scene and all the materials smooth enough.
I can t wrap my head around how do you make a floor that reflect the environment and just the floor.
Now i did realize that unity free has reflection probes.
More info see in glossary window that are used for editing the size and probe origin properties directly within the scene.
It may be possible to get some sort of sensors in the floor and then you re doing entirely custom things to read the data.
With the leftmost button size selected.
I like this opencv asset for unity.
I suspect that this will be the hardest part of what you need to accomplish.
There are two buttons at the top of the reflection probe inspector a unity window that displays information about the currently selected gameobject asset or project settings alowing you to inspect and edit the values.