fix Icarus not being influenced by atmosphere

src/cmd.rs

@@ -1177,6 +1177,7 @@ fn spawn_scenes(
                             state.chat = state.id.clone();
 
                             state.model_scale = 1.0;
+                            state.is_experiencing_atmosphere = true;
 
                             // command: angularmomentum 0.4 0.2 0.1
                             state.angular_momentum = DVec3::new(0.4, 0.2, 0.1);