Here s a quick tutorial on how to create realtime reflections in unity 5.
Floor reflection unity.
The effect descriptions on this page refer to the default effects found within the post processing stack.
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.
I can t wrap my head around how do you make a floor that reflect the environment and just the floor.
I like this opencv asset for unity.
Now i did realize that unity free has reflection probes.
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.
This approach is very hacky but you can use the new reflection probes in unity 5 to easily create realtime reflections for something like a reflective floor.
It is commonly used to create more subtle reflections such as on wet floor surfaces or in puddles.
With the leftmost button size selected.
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.
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.