Simulation of reflections

Modern ray tracing technologies are not yet available in many games, but there are still ways to simulate reflections without a heavy load on the device. For example, if you put a torch, lantern or candle close to a "glossy polished" block, then the texture of this block can be automatically changed, making one of the sides partially transparent, and the same light source can be placed inside the block, as if it were imaginary, reflected.