This example provides a somewhat optimized lighting mechanic with ray tracing and shadows.
Detailed lighting that surrounds the player while also displaying shadows behind objects using raycasts. Has been optimized and tested to work for smaller scale levels or maps. Pressing 1-3 will transport you to different levels displaying how detailed the lighting can achieve. Finer detail may cause performance issues in some games.
Plan to include additional lighting sources as well as the player. Bug fixes and visual changes. Hopefully to be optimized more, but not sure how much more it could be optimized using a lot of objects and their respective raycasts.