Dynamic Lighting for props/doors

[c0ldpr0xy]

Searched the forums but couldn't find anything. So basically, my question is, does Source even support dynamic lighting? The flashlight and the shadows that are cast from it behind NPCs/objects looks amazing for Source. Is there any way to make a door or a prop_static lit after it opens or moves to a different location.

When my doors open, they always stay dark because their initial position are within walls/ceilings. Kinda like trapdoors. Even if I did light these doors with a special room (which isn't the way to do it), the lighting would be inaccurate.

Thanks in advance. - T

[Gary]

The flashlight system is the only real dynamic per-pixel(as it lights surfaces at a pixel level) light source that also casts real shadows. It also had a few bugs, like improper culling, fading on brushes, and randomly projecting backwards. The flashlight system is also used by the env_projectedtexture entity. Which is in itself buggy and limited. I would rarely recommend using it outside of very tightly controlled scenes unless you are fixing it with mods.

dynamic props(any moving or changing entity) are lit in their entirety based on the lighting at their origin or other selected point. Doors are dynamic and their lighting point can move. I've seen your problem solved before. So I know it's possible. Can't test though cause I'm posting from my phone.

[c0ldpr0xy]

You say doors are dynamic and their lighting point can move, but how do I do it? As I said, when my doors move to a lit area, they are still 100% dark. (Because of their initial position)

Ps: forgot to mention that the doors are func_door not prop_door

[Dives]

func_door is a brush and brush lighting is baked during compile. The door must be be a model (e.g. prop_door_rotating) for the lighting on it to be dynamic.

[c0ldpr0xy]

func_door is a brush and brush lighting is baked during compile. The door must be be a model (e.g. prop_door_rotating) for the lighting on it to be dynamic.

Yeah sorry I didn't mention this before but this was what I was wondering. Anyways, after some thorough research and some help from TopHATTwaffle, I figured it out to do it with env_projectedtexture. Cheers.

[joe_rogers_11155]

You can have an env_projectedtexture to simulate a dynamic shadow-casting light, if you are inclined to manipulate the somewhat broken code for that entity. Other options include faking it by turning a light_spot on and off when the door opens or something, but you will not get crisp dynamic shadows that cast rays into a room or around objects.

[c0ldpr0xy]

You can have an env_projectedtexture to simulate a dynamic shadow-casting light, if you are inclined to manipulate the somewhat broken code for that entity. Other options include faking it by turning a light_spot on and off when the door opens or something, but you will not get crisp dynamic shadows that cast rays into a room or around objects.

Thanks for that.

[navatesap]

The flashlight system is the only real dynamic per-pixel(as it lights surfaces at a pixel level) light source that also casts real shadows. It also had a few bugs, like improper culling, fading on brushes, and randomly projecting backwards. The flashlight system is also used by the env_projectedtexture entity. Which is in itself buggy and limited. I would rarely recommend using it outside of very tightly controlled scenes unless you are fixing it with mods.

dynamic props(any moving or changing entity) are lit in their entirety based on the lighting at their origin or other selected point. Doors are dynamic and their lighting point can move. I've seen your problem solved before. So I know it's possible. Can't test though cause I'm posting from my phone.

Thanks for your share, it's very good