Is there anyway to add in a button to the map that, when shot, changes the skybox? Not sure whether or not this is a noob question, but a quick scan of the search results showed nothing, so why not?
It's not possible through mapping. The skybox is set on compile.
It might be possible through a server plugin that dynamically replaces the texture, but I have no idea if there's one that does that or if it's possible.
Or an inverted dome, which some UDK games do (and I think there's a skydome for TF2 as well? I know 2fort uses a circular clouds props to get rotaing clouds in 2fort but I'm unsure if there was an actual dome)
It's pretty easy to make, just create an internal dome in a modelling program, set different skins to it, place it in the 3D skybox and then you can dynamically change the skin depending on the button state. Should be noted that skybox lighting wouldn't change, and would be pretty impossible to have change dynamically.
Using the sky-in-the-3Dsky method won't look the same, and is generally noticeable. The real skybox is always rendered at a set distance from the player so you never see parallaxing, which will occur using an object-based sky.
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