Rotating an object based on a vector3 value.

[なかの31]

I made use of that a long time before, but was only in 2D, and I'm struggling to find out how to do this on 3D.

I created a projectile object which has a velocity variable, which will be used to move the projectile per physics frame in a direction. The problem, is that the projectile (an arrow) is intended to be rotated, with its tip facing the direction it is flying, and I have no clue how to do that.

Anyone could give me an idea of how I could get which direction the arrow should be rotated based on its velocity? I tried googling about this issue, but I got a lot of irrelevant infos, probably because I searched for the incorrect thing.

[umop-apisdn]

Every 3D object inherits from Spatial, which has a look_at() method.
Just make sure your arrow model is "facing" negative Z.

https://docs.godotengine.org/en/3.1/classes/class_spatial.html#class-spatial-method-look-at

[なかの31]

Crap...
I might have been quite dumb here...
If I use look_at(), and set the value as the position of the object plus velocity....
That will do...?

[umop-apisdn]

Originally posted by なかの29:

Crap...
I might have been quite dumb here...
If I use look_at(), and set the value as the position of the object plus velocity....
That will do...?

That sounds reasonable, yes.

[なかの31]

...Yeah, that seems to work.
Thanks. Now I'll go try making the arrow fly on its tip, instead of the side.

[umop-apisdn]

Originally posted by なかの29:

Now I'll go try making the arrow fly on its tip, instead of the side.

Originally posted by umop-apisdn:

Just make sure your arrow model is "facing" negative Z.

[なかの31]

I actually had to rotate the arrow model and collision -90 in X angle...
Seems like 3D models are not like 2D models, where models should be facing upwards.

At least now the arrow is flying correctly. Yay!

[Orange Guise]

Watch out for Gimbal Lock.