Unreal Engine 4 Blueprints - A Trick for Better Looking Movement

This Unreal Engine 4 Blueprint tutorial shows a little technique I like to use to make movement appear more natural and more visually appealing. The actual method, which is interpolation, has a lot of applications outside the scope of this tutorial but I thought it would be a nice introduction to it.

[@NostromoVA]

And just like that, you've got yourself a new subscriber! I like your clean and thorough explanations!

[@d123s404]

Much appreciated :)

[@dcsabe]

"just keep watching and you'll get the information" now I'm subcribed.

[@d123s404]

Thanks man! I should use that line more often :P

[@marleybishop9649]

you make better tutorials than the developers themselves. More blueprint tutorials plss this was great. Simple and to the point

[@TheFGrox]

Your explanations are better than the ones on the official UE channel.

[@d123s404]

Thanks! x)

[@LudwigvanBeethoven2]

Instead of branches you could use "Sign" of velocity X axis and multiply it by 20. Notice that Sign of X is -1 if X is less than zero. +1 if X is more than zero, and 0 if X is zero. You can multiply this by amount of rotation you need.

[@LudwigvanBeethoven2]

For different interpolation speeds you could use Select or Branch and choose interp speed based on Sign if its -1 or +1 or 0... But to keep it simple its better to put that logic in a function say "GetInterpSpeedFromVelocity"

[@kizonyoutube]

I bet you could set the actor rotation to the velocity so unreal's physics engine could handle the interpolation instead? You could clamp it to like 89 degrees so you don't spin infinitely and multiply it by whatever value so it isn't so big or small. Great video, you don't just explain that you need things, you explain why and you recap for the viewer. Thanks! :)

[@jakeb4026]

Great Tutorial!

[@CasaSoy]

This is exactly what I was looking for! Thank you. For some reason, it works up until I try to implement rinterp. I've rechecked everything and did some digging but couldn't find an answer. Any suggestions?

[@jadebrimhall9173]

Should there be any problems with the tilting direction when turning the camera. If I turn the camera to certain positions then the tilting is turned to the other direction.

[@sunfix991]

same

[@TerryLaVeyByrd]

so i tried this on a animated character, it works moving from left to right but not in any other directions. how would i fix this

[@Alex-hs8xj]

thanks

[@jonathanxdoe]

How do we check constantly? We use event tick. Closing the video now...

[@d123s404]

why?

[@MrSoulast]

@@d123s404 For optimization purposes you should use even tick only if it is necessary. In this case, you could just add that script to your Player Control Event (Move Right, Turn Right, etc)

[@d123s404]

@@MrSoulast I would agree but only if the player is the only thing influencing his own position. If there are enemies or environment elements that can move the player then it needs to account for that as well.

[@MrSoulast]

@@d123s404 ticker is expensive and I did just show an example ;)

[@LudwigvanBeethoven2]

@@MrSoulast tick is not expensive unless you make it expensive. Input events could be just as expensive because they are ticking every frame as well.

[@ahmeda.934]

I already have an even tick so I can't put another event tick. How can I fix this?

[@d123s404]

some nodes like "event tick" and "begin play" can't be duplicated. You just have to connect everything to the one "event tick". As far as I know there's no way to duplicate that without issues.

[@ahmeda.934]

***** can you make multiple ticks though?

[@d123s404]

you can use the sequence node to connect more than one thing to event tick. Just connect "Event Tick" to "Sequence" and add as many pins as you like. :)

[@ahmeda.934]

***** I wonder why I didn't think of that lol thanks.

[@arcticnerd5994]

It would have been nice to see an application beyond just the cylinder. As is I don't understand why you prefer this over replicating the effect with animations.

[@d123s404]

The effect is not as obvious when applied to an animated character. For clarity and simplicity I opted to use a cylinder, but you can apply this to an animated character and it will work just fine.

[@arcticnerd5994]

Thanks for the reply. That's a good point. I did apply it to a character but couldn't really get it to look right. I'll keep it in mind through. I'm sure I'll find an application for it.

[@d123s404]

If you're interested in seeing this in a game then check out Overgrowth. You can search for "Procedural Animation For Overgrowth - Wolfire Games" which shows the character's body tilt forwards and then backwards as he ascends and descends while jumping. (skip to 1:20) Overgrowth is actually the game that showed me this effect.

[@arcticnerd5994]

Humm... yeah I can see how it a sense of weight to the actors movement.

[@ronaldkamanga7156]

I have a question... so When implementing this effect on an animated character would I use the characters normal blueprint or do this in the animation blueprint? thanks in advance!!!

[@JR-rp7vr]

I wish the video showed this teaching with a human like character. That way we can see all the different aspects of what it would affect with characters we most likely are going to create.

[@MakotoIchinose]

This is meant for accel tilting, which is featured on a GDC talk about indie approach in procedural animation tricks: kzbin.info/www/bejne/gn_MlaaDmtiriac

[@ID345891]

you sound like otzdarva