Any of the DSLR cameras will do. The trick will be to select a lens.
Since you will be using it in a dimly lit environment you will want a bright lens with an f-stop of f/1.2 to f/1.7 . Your budget would rule out a zoom lens because a bright zoom lens is very costly. All lens makers make reasonably priced 50mm bright lens. You can use your feet to do any zooming.
I'm looking for a camera that would be used to take photos of people playing sports (paintball). Any recommendations? Also one of the fields that I would use the camera at is an indoor warehouse which can be dark.
Budget $800 -1200