The animated GIF file for this project is too large, over 4Mb therefor it cannot be loaded. However you can Export an mp4 or animated GIF yourself using the supplied Walk_Through-2.pclx.
Walk_Through-2.pclx (3.2 MB)
The background file was produced by StopMotion and can be seen in the Tutorial section.
The interesting part is the blank frames in the Vector layer called ‘Vector’. These grames enable you to zoom out, in order to see the entire background image and using the internal player, watch the visible part if the image, the bright rectangle cross left to right.
The figure in the foreground was added by myself, to add to the effect.