Light seemingly passing through doors

A Forum Thread for Half-Life 2: Episode Two

okay, so ive been working on this little map for a few weeks and have a couple of prop_door_rotating in the map, with a dulled down light source behind it (accompanied by a static fluorescent light prop) so it doesn't flood the level out with excessive light, but i have this stupid problem where it seems the light cast off from a light_spot or even just a light, protrudes through the door, like it was non existent which is not what i want. is this because the light is not dynamic?
Sign up to access this!


  • will2k avatar
    will2k username pic Joined 8y ago
    29,857 points Ranked 143rd
    30 medals 2 legendary 7 rare
    • 1st Place - Tutorials Contest Medal icon
    • 500 posts awarded Exemplary Feedback Medal icon
    • 50 posts awarded Exemplary Feedback Medal icon
    • 100 posts awarded Exemplary Feedback Medal icon
    • 200 posts awarded Exemplary Feedback Medal icon
    • Achieved Super Moderator clearance Medal icon
    will2k avatar
    Map Critic
    You're in a tight spot here because of the way Source handles lights. Your light or light_spot is calculated during vrad compile and the static lightmaps are baked onto the textures. VRAD does not not take prop_door_rotating into consideration when calculation lights/light obstruction as far as I know and the light will pass through the door as if it is not there. there are some solutions but they're not optimal: you can insert a "blocklight" thin brush (1 unit) inside the door so your light_spot doesn't go behind the door or you can play around with the falloff settings (50% and 0%) so that the light practically dims to zero when it reaches the door. In both cases, there is a downside in that when you open the door, the other side will not have light casting because of the blocklight or falloff. You can tweak the light intensity or add some dim lights at the other side of the door to cover this effect but this is up to you to decide depending on the map geometry, other lights and goal of the map. Hope this helps Will2k
    cosa dici! avatar
    cosa dici!
    URL to post:
  • kin37ik avatar
    kin37ik Joined 6y ago
    hmmm, i see. *rubs chin* taking into consideration that it might look too weird, it may not be out of the question to use a dynamic light, it will most likely be the only dynamic light in the map, so i guess it cannot hurt to use a dynamic light
    Rooty tooty point n shooty
    URL to post:


Share banner
Image URL
HTML embed code
BB embed code
Markdown embed code


kin37ik avatar
kin37ik Joined 6y ago

Sign up to access this!
Sign up to access this!
Sign up to access this!


Sign up to access this!



  • Share on Reddit
  • Share on Twitter
  • Share on Facebook
  • Share on Google+
  • 2 Posts
  • 4ySubmitted
  • 4yModified

More from Submitter

More Other/Misc Threads tracking pixel