Okay never mind, i found a way around it, if you place the env_fire high in the air the NPC will be able to pass through it, but the fir still draws all the way to the ground. As for tehWave question, if you type in "wave" in the textures menu you are given twp wave textures (as in waves in water) Metastasis used them on the island. Now if you add an overlay on the water and use both those textures on two different overlays you see they are animated. Unfortunately the wave texture at the end of the animation disappears for a moment. and then returns at the beginning of the animation. I want to know if there is a way to stop it from disappearing. (Note: remember to select the water as the brush to apply the overlay too, this can be found in the overlay properties under the brush face section, simply select the water brush.) If anyone finds a way of doing this i will be very grateful.