First experiments with actual light color is done, and I saw some things that I did not realize before: The way lights work is a little bit strange. For my experiment the light texture contains the color of the light. Instead of decreasing the brightness with distance I fade the color to white (if shadow is true) in DrawVertex(). This produced some ugly conflicts if there is a second clonk, but since this was not a problem in the original code it is probably because of my lazy/experimental coding.
Anyway, I with the current implementation I have no idea how to merge light colors yet. Also, the default color in the texture seems to be black. For light color this should be white. How do I change this?
Furthermore, with different light colors next to each other, the light has to be merged somehow. At first I thought that the easiest way is adding the color values, but for that I need the values that are saved in the texture?
Ideally I want to have something like this, except that the background is also white, and the image is blurred.
Also, the beam going out of the tunnel looks a little weird.