That s why shadows exist.
Unity light passing through walls.
These options have obvious edge cases that can t be easily resolved.
Light passing through walls 1.
If either of these don t solve.
In that case you ll need to be a bit more clever.
By sydon thursday november 2 2017.
It s really just a shadow type setting that needs to be set right.
This solution works in other engines like unity and ue4.
Shadows are the obvious answer however i assume you are using lite and that s not an option.
Although you have enclosed the light indirect light from the light source seems to seep through especially on the ceiling and the floor.
How to fix indirect lights seeping through walls.
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You can simulate this in shaders or use raycasts to see if the light is behind a wall.
This solution works in other engines like unity and ue4.
Set the point light s baking property to mixed or baked then bake your lighting data using the lighting tab.