Assets apearing as shadows or not at all

Yesterday the game was working properly, i saved everything and closed the editor, and when i opened it today, the assets where being diplayed as “shadows”, this occurs even if i drag new objects into the scene, like cubes and other default meshes.

Note that i`m using the third person template, and even the stairs in the scene arent being rendered.

Did something get corrupted as i saved? I didnt edit rendering settings, the last thing i was doing was making weapon scripts.