[SOLVED] Looking for a simple shadow shader £30 reward


I’m looking for help building a shader. I want to create a ‘shadow’ effect using just shaders, eevee or cycles. It will use the position of an empty to determine the ‘light source’. The desired effect should be a simple white (if visible by the light source) and black (if not seen by light source). The shader is applied to multiple objects. I’d like to use the ‘black and white’ as a mask.

see image example of desired effect

Can anyone help me with this? I’m happy to pay for a solution.

Thanks in advanced!