triggered lights

hydragorgon

L1: Registered
Feb 20, 2011
27
8
What's the least expensive way to make a triggered light? I realise that naming lights makes them more expensive. I want to make warning lights turn on when a train goes by, but the working prototypes I have seem to slow down fps.

I'm trying to make a light that doesn't cast shadows, but I don't know if that's possible. I've used env_sprites, but they don't seem big enough. I've also turned the shadows off of the trains.

thanks for your time

hydragorgon