Miss Stark
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If I understood correctly, in the ambient light parameters, you select the SkyDome with the desired "background."
Thank you, this helped. However, the edges of the background became visible on the "adventure map." Is there a way to hide them? For example, in the standard Grass lighting, a background image is used, but the edges don't stick out in the game.
UPD: I solved the problem by copying the SkyDome line from the default Grass lighting. Thanks again for your help!