I;m using the toon shader from the Wiki, but I am having a problem in that the shader doesn't respond to level lighting, only the sun. The model is fully lit in the dark.

How can I get the shader to respond to lights in the level?

well it will take a bit of work as that shader doesnt support level level lighting at all

how do other shaders do it?

Is there any way to make it base its shading off of how the model is lit when no shader is used?

well there is a couple of ways it can be done, one way is to make a toon shader that can be fed the brightness of the lightmap (well technically that has to be done either way) and the other step is a decision between quality and ease, the easiest version is to do a trace down,to the closest block, find its lighting and input that into the shader every frame the hard way is to read it from the wmp file itself, find the distance and angle from the light and then use that to decide which direction and if that light should light the models.

For now, I think I'll try the easier way.

How do I do that?

in the shader you can use float3 vecLight;

This will tell the shader the brightness of the block (same way as using a trace, but without doing it twice as the engine already does this

thanks