Some progress working with lights.
Under version 1.7.1 of Rene's Lighting system, you have either a "Linkset mode" or a "Region Mode". The first works with prims that are part of a linkset, obviously, but within that you can also have something called Light groups. With this, you can link a number of prims in a linkset together by giving them the same prim description text. That also includes a separate (but still part of the linkset) prim with a switch script.
In the example below, I named three lights "Recycle Tank Lights" and put light.lsl in each, then I had another prim with the same description but with the switch.lsl script in it. Pressing the switch prim toggles those lights on/off, but leaves the other light group on that level (called "Recycle Control Lights") alone. And the real beauty of this is that you're not editing the scripts themselves, you're just copying them into the prims. Simplicity itself. Also, the ability to have a real switch is a nice touch.
And that makes life easier with the lights. Rather than adding them to the floor linksets - or rather the floor linkset above the current level which of course is also this level's ceiling - it's better to add them to the one of the wall linksets (either Inner or Outer) of that level. I really like the idea of a secondary level of control using prim descriptions, because that could be used for other applications, like starting/stopping a motor or effect. Cool.
