Light Sources and Their Uses
There are several different types of lights in Unity. I briefly covered the skybox earlier, which can technically be a light source, so that’s out of the way. The remaining ones I want to cover that are commonly used are the directional light, point lights, and spotlights.
There should only be one directional light in a scene. This light comes from outside the boundaries of your scene and goes through the entire thing. This is most commonly used for the sun.
Direction lights also ignore most walls by default.
The next light type is a point light. A point light emits light in all directions from it center. A perfect real world equivalent would be a candle
Finally, there are spotlights. Spotlights are just like their real world counterparts; they shoot light in a cone in a direction.
