As for polymer specific effects, there's only the lights at the moment as far as I can tell, and this is how you add them?
Pointlight; casts light in all directions, will not cast a shadow:
SE 49
hitag: radius
To edit colours, press F8 in 2D mode on the SE, then the x, y, z velocities control the magnitude of red, green and blue colour (I don't remember which one controls which, you'll have to play around and find out).
Spotlight; casts light in one direction, casts shadows:
SE 50
hitag: distance of light
shade: width of spotlight
extra: up/down angle (100 points straight ahead)
x,y,z velocities work the same as with the pointlight
owner: equal to the tile number you want to project, (-1 means no texture projection), not recommended as it projects the texture upside down and back to front
The included a.m32 script allows you to see the radius and colour of the lights in 2D mode along with other features that make editing easier. Here's the page for it: http://wiki.eduke32....script_examples
Hope that helps WG
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Edit: also note that 255 is the highest you can set each colour, and that if you wanted say a whitish light (x:250, y:220, z:220), you can dim it down by keeping the ratios the same but lowering the magnitudes, e.g dividing by 2: (x:125, y:110, z:110). The colours mix pretty much the same way they do in microsoft paint, which can sometimes help you find a specific colour.