I'm going to decompile some of the levels that feature it, particularly the first encounter with blue gel, to see what's up. I'll post results here.

However, anyone have some insights into this?

They used about 8 sprayers that turn on at map start, and turn off 1 second later to totally cover a 320 x 740 brush. This was my way of stitching it together, but I was hoping they had something cleaner (like a brush-type entity that comes pre-coated).

Interestingly though, the sprayers on jump_intro have some extra parameters such as "start_radius_min" "start_radius_max" "radius_grow_time_min" and a few others. I'm going to toy with these settings some more. I've been using the standard parameters but kept making a mess; getting gel where I didn't want it. Maybe these radius_min/max parameters can let us precisely cover a surface.

Here's a pic of the setup and parameters:

http://s596.photobucket.com/albums/tt41 ... rayers.jpg

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goodwinter wrote:
This is totally unrelated (let me know if I should have made a new topic) but how are you able to open sp_a3_jump_intro in Hammer; it isn't included in the sdk_content folder. Is there a tool that decompiles the p2 maps from bsp?

Take a look at this page.