How to Launch Character off of wall.

Development Programming & Scripting Blueprint
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1

So I’ve got this wallrun setup, and it works well enough, except I can’t seem to get the “Jumping Off” bit to work. Ideally, when I press the space bar, it should automatically jump up and away from the wall. But unfortunately I can’t seem to get the “Away” bit and my guy just ends up lurching up the wall unless I’m expressly holding the movement key away from it.

I am assuming this is a problem with my vector math, as I have a hard time wrapping my head around the subject. I am assuming the end goal is a vector like this green one here with an arbitrary Z value:

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Here’s my latest attempt:

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I also tried using a reflect vector, mirror vector by normal and a Dot Product based method but I don’t know how to math out the latter (I’ve watched a lot of tutorials but just can’t get it through my skull here) and I think the former isn’t working because my forward vector and the wall’s normal vector are perpendicular?

2

Exactly! To achieve your goal, you can simply get the actor right vector (or wall normal), multiply it by something like 100 and plug it’s X and Y axes into the corresponding pins of the Launch Character node. No need for cross product here :blush:

Btw you don’t need to normalize the cross product since it’s already a unit vector, because your two input vectors are unit vectors. We’re not gonna be using it here but wanned to add this as well.

Hope this helps :innocent: