The first thing that pops into my mind is to use the additive blending with image overlays... If, for instance, you have a topdown look, you could draw the floor, add lights, draw walls, add lights, etc... That could look very cool.
For sideviews the thing becomes a bit more complicated, but vertex color could be the answer. If you break your scenery into small enough bits you could create a decent lighting system. I wouldn't know how to access the vertices of loaded images though...
For sideviews the thing becomes a bit more complicated, but vertex color could be the answer. If you break your scenery into small enough bits you could create a decent lighting system. I wouldn't know how to access the vertices of loaded images though...