Does height region 1 need to be different?

If I have understood correctly, the region which is set determines the shadow that is thrown in an undifferentiated way.

However, I think region 1 needs to be different for the following reason.

Take, for example, a small cupboard, table or sideboard next to a window. It's going to be region 1 as that is its height.  Clearly it needs to throw a shadow - but the top surface of the object needs to be lit as the light will be falling on to it from a greater height if the window is a normal one.

Perhaps there is already a cunning way of achieving this which I haven't noticed.  If so, great.  If not, is there any way to have this effect?

 

Regions are employed to declare the floor's height, so the system can cast shadows accordingly. But please note that shadows on this engine are a simplification of the real situation - I've tested several methods and ways of casting shadows and the implemented one is the best without sacrificing performance. In order to do more complex things (such object shadows), I would need a Z Buffer (a buffer that stores height data), but processing it on the CPU would cost too much performance.

I've been studying ways of casting object and character shadows without a Z Buffer, but I haven't figured out a good algorithm yet. I may find it, but it can take some time (for instance, it took me 10 months to make the KGL as fast as it is today).

 

Okay, I understand your difficulty.  All I need do, in that case, is edit some tiles so that they have a new, suitable, shadow already attached to them and simply not give them a region.  There will be a shadow, and the top will be lit.  That seems easier than you searching round for an obscure algorithm.

Thanks anyway.

 

This thread is being closed, due to being solved. If for some reason you would like this thread re-opened, please report this post and leave a message why. Thank you.