SFML Light System - Let There Be Light

[Estivo]

are you talking about penumbra?

[Nutomic]

Yeah right, I see you mentioned that (I didn't change any color/transparency settings in my code though).

Do you have any idea how I could fix this?

Edit: It definitely has nothing to do with those changes, I reverted them and still have the same problem:


The directional light has the following values:

mPlayerDirectionLight->m_radius = 500.0f;
        mPlayerDirectionLight->m_size = 50.0f;
        mPlayerDirectionLight->m_softSpreadAngle = 0.1f * M_PI;
        mPlayerDirectionLight->m_spreadAngle = 0.5f * M_PI;
        mPlayerDirectionLight->m_intensity = 1.5f;
        mPlayerDirectionLight->m_bleed = 0;
        mPlayerDirectionLight->m_color =  Color3f(1, 0.95, 0.40);

So softspread should work no problem, but it only does sometimes after waiting.

[Daffern]

Have you tried turning the bloom off?

[Estivo]

ConvexHull parameters please

[Nutomic]

Have you tried turning the bloom off?

That didn't solve it, but now the light/shadows look much more like I want, thanks

ConvexHull parameters please

I didn't have any hulls in there yet. Now I just inserted some, and it seems the penumbra effect only works from the moment the light hits a ConvexHull. Obviously a bug, but for now, I can work around it.

[Estivo]

Hmm I think I know about what are you talking. Try to set position to 0,0 and then to position that you want.

[ThreeDumps]

Awww... Still have problems



Does anyone have an idea what to do to get situation from second image instead from first? And situation from third is actual but not satisfactory.

First is when

hull->m_renderLightOverHull = true;

Third is when

hull->m_renderLightOverHull = false;

Of course I can redraw all walls but then I will have all walls visible, also in chambers next to.

[Estivo]

Disable render over hull and set hull transparency to 0.5f

[ThreeDumps]

@Estivo, not exactly does it work the way I wanted.

I give bigger framgnet map and more situations.



1. m_renderLightOverHull false, m_transparency 0, redrawing walls.
Bad: Whole labrinth can be seen, all walls have same brightness.

2. m_renderLightOverHull true, m_transparency 0. 
Bad: Shadows on walls.

3. m_renderLightOverHull true, m_transparency 0.5.
Bad: Shadows on walls, light in separated chamber. 

4. m_renderLightOverHull false, m_transparency 0.
Bad: Walls are unlighted.

5. m_renderLightOverHull false, m_transparency 0.5.
Bad: Walls are unlighted, light in separated chamber.

I'm trying to get situation from picture number 2, but without shadows on wall but still have darkens out of room.

[Daffern]

You could try render the tiles on top of the shadows

[Estivo]

I think that the easiest way to do it is only to make wide line and make it transparent with rendering over hull.

[ThreeDumps]

@Daffren, I'm rendering tiles on top of shadows in first case.

@Estivo, this would have worked if the whole labyrinth was one shape but it must be build using convex shapes. It will still makeing bad looking shadows on convex shapes contacting each other.

[Nutomic]

I created a Github repository for this project, where I patched it for the latest SFML version and added CMake.

Link

Feel free to open pull requests or issues.

Awww... Still have problems



Does anyone have an idea what to do to get situation from second image instead from first? And situation from third is actual but not satisfactory.

First is when

hull->m_renderLightOverHull = true;

Third is when

hull->m_renderLightOverHull = false;

Of course I can redraw all walls but then I will have all walls visible, also in chambers next to.

I would be very interested in this as well, but I suppose it requires editing the library.

Maybe I'll get around to have a look at the shadow rendering code.

[Estivo]

It's not LTBL fault. You have to make one big shape.

[Daffern]

I don't know if there is a fix for this, but is there any way to make the shadow fill where it's supposed to fill below the ground rectangle?

Make black texture ? What do you want at all?

As you can see in the picture the light penetrates the hull. This seems to happen when the hulls shape is too long in one direction compared to the other direction, because it works perfect with a square hull. I was wondering if there was a fix for this or if i have to split the hull up into several smaller hulls. The blue part is the hull and there are two lights at the player. Some of the shadow is drawn bellow the hull(the black line directly bellow the hull).