Simultaneity: Photons need to change speed in-flight

[Vivek-sagar]

Currently, photons are started off with a velocity and maintain that until they hit the wall. This is scientifically wrong. They must change speeds if the speed of light is changed.

[Vivek-sagar]

Also, need to make sure only the player's X-axis velocity is being considered while slowing the photons. If the player turns 90 degrees and walks, the photons shouldn't be affected.