Hi Malapropos,
To stop shadows from being cast by you mesh you can select your mesh and then go into the detail panel>lighting>uncheck the box that says “cast shadow.” This will completely disable shadows being cast from your mesh. You can also use this area to select what types of lights will affect your mesh as well, whether the light is dynamic or static.
As for the second part of your question, it is not possible to disable how light affects the meshes/game world. You need the lights to light the objects you’ve placed in the game world. However, you can disable the material that is on that mesh from receiving light by changing the properties of said material to “unlit.” This will disable other attributes of the material though as you would have to use the “emissive” tab to properly light your mesh otherwise it would be black.
I hope this helps in some way.
Thanks!
Tim
