UE3 - GoW Train Wreck: How was it done?

[NATO_chrisjm]

I’ve been looking at Gears recently and I’ve been trying to work out how the scrolling background for the Train wreck level was achieved, if it’s all movers or what 0o.

I want to try creating a similar effect for a UT3 map I have planned, thus any assistance would be appreciated.

Thanks!

 

[_N_]

Hmm... did it have actual fully 3d objects passing by?

If so, they I think they might have used emitters to do it. You can have emitters fire out static meshes, and there's no limit on size or velocity that I know of, so it's possible that there were simply some emitters in front of the (stationary) train that were firing out houses and trees and powerlines, etc, at high speed. Emitters also allow for a certain level of randomization, so there wouldn't necessarily be any obvious repeating patterns in the stuff passing by either. The ground was probably done as a static ground mesh of some kind with grass and dirt material on it and was just set to pan really fast.

Man, this sounds like a sweet UT3 map you have planned!

 

[Kantham]

It is InterpActors, movers in other words, that constantly pan, they gave the meshes a seamless feel.

 

[NATO_chrisjm]

Kantham: Wouldn't that impact on framerate alot ?... my first thought was InterpActors but I assumed that it would lead to poor optimisation.

 

[Kantham]

Sure doesn't sound like it does an impact on framerates that much, I looked at Tyro from the Gears ed since I wanted to get the same thing, and seems like they also have collision turned on for when the Berserker fell off the train, since velocity doesn't work with corpses.

Emitters doesn't work like they did in the previous Engine, like where you could spawn meshes with a random seed/yaw. I really have no clue why they removed that, it was useful.

If you have Gears ED, take a look in Tyro_World.
It involves some Kismet and Matinee.

 

[willhaven]

It was all interpactors run with matinee if I recall correctly.

There may have been some emitter work as well, but I don't exactly remember.

When the Berserker falls off, I believe it may have been a physics volume or a blocking volume with a special physical material set.

 

[frost0fractal]

They didn't get rid of that, the functionality is still there to do that with emitters... I've used it

 

[Leonardo]

But what about Liverpool? Oo I was dying to see that one finished! Are you scrapping it? All that work ? Please say Nay Nato........