SFML Light System - Let There Be Light

[Grimshaw]

Ill try again.. When I said "add sources" it means adding the LTBL sources to your project, so they can compile. This means the .cpp files in your project tree / makefile... Nothing to do with #includes..

[zachprinz]

Views seem really wonky.



I'm getting this. It's the same problem everyone else was having quite a few pages ago.

The only time I can see lights is if I set the view the the default view of the panel. But then I can't see lights anywhere else.

You can see the light trailing up into the top right hand corner of the darkened area.

Anyone know a fix?


   view.setCenter();
   panel.setView(view);
        Draw(panel);
   panel.setView(panel.getDefaultView());
   lightSystem.SetView(panel.getDefaultView());
   lightSystem.RenderLights();
   lightSystem.RenderLightTexture();
   lightSystem.DebugRender();

[zachprinz]

My solution to the problem I posted above was to create the sf::RenderTexture window I have the sprite panel on at the size of the quad tree for ltbl.

Then I just set a view on the sprite panel and keep the light systems view to the whole 4096x4096 map.

This is resulting in very poor performance when you add in more than a few lights.

I've added checks to see if the lights are contained in the visible part of the map but it doesn't help much, about a 35 fps drop when there are 5 lights on screen.

Any thoughts would be appreciated.

[emplace]

Anyone got a working sample of this ?

[Daffern]

When im setting the m_intensity to lower than 1.0 no light is shown at all when m_useBloom is true.

The light works when m_useBloom is false, however m_intensity doesnt affect the intensity of the light at all

Anyone know why this happens?

[Estivo]

Mess in code. Set intensity to 2.0, manipulate attentuation.

[Daffern]

Okey! Thanks for the quick answer

[polkom21]

Hello everybody!

I have problem with y-axis because I want flip this axis and I don't know how to do it. Help me!

EDIT:
Ok. I know how to do it. Now I have a problem with rotation ConvexHull. Whether is something function who sets angle?

[Daffern]

No, there is no such function. However you can get each point from a sf::Shape by using getPoint(int). Example:

hull->m_vertices.clear();
int count = dRect.rect.getPointCount();
         for (int i = count; i>0 ; i--){
            sf::Vector2f point =  rect.getTransform().transformPoint(rect.getPoint(i));
            hull->m_vertices.push_back(Vec2f(point.x,options.screenHeight-point.y));
         }

You probably have to fit it to your code, but this was how i did it

[polkom21]

Thanks for the idea. I have another problem. When I set light point position like static position all it's ok how I set position from object position light isn't rendered.

[polkom21]

Ok. I repaired it. How to change position convexHull?

[Daffern]

Use the same code as above

[polkom21]

Hi everybody.

I come back to writing my game and I have next problem with lights. Why penumbra isn't rendered as it should be?

And next problem. Why when I set m_renderLightOverHull on false  shadow looks like:

[The Illusionist Mirage]

I get this when I try to follow the walk through:

[eXpl0it3r]

I get this when I try to follow the walk through

What walk through?

ltbl::Light is, as the compiler says, an abstract class and thus can't be instantiated. You most likely want to use ltbl::Ligh_Point instead, as shown in the example file.