Shaders are cool, But also Complicated

So for our idea to work with the matter of having a working sonar that would only show things once the sonar goes off we had a couple of ideas of handling it in a cruel way. The last thing that I didn't know we were gonna use was something called a shader. It wasn't something that I was fully aware of nor knew what its purpose fully was. But we got handed a shader and had to try and use it. It worked the way we wanted it to do, but there was one problem that I was hoping to avoid at all costs. I had to UV the models and get them textures. It wasn't something that I wasn't unfamiliar with, it was just something that I wasn't fully knowledgeable on.