Question Looking for a way to switch focus targets in Unity

Hello everyone.

I am currently working on a souls like project, and I'm struggling to find a way to switch focusing targets.

The goal: I've a simple focusing on target system, and I'd like to be able, while focusing, to switch to the nearest target in the direction of the right stick.

My idea: I was thinking doing this by translating every 3d target point to a 2d plane with matrices or any Unity method to then calculate the closest point in the stick direction, but I've no idea how I can do it, and there's maybe a easiest and more intuitive way to do it.

I tried to look at various tutorials, but they aren't helping with this or aren't explaining well enough for me to understand what they are doing and why. Do anyone have any tips?

Thank you very much!

 

You can just get the objects within range and then loop over them and check vector3.Distance

 

I need the direction. My focus is already working, and it's already selecting the closest target from the forward view. The problem here, is that I have to deal with the input direction

 

Maybe create a bias using the angle between the direction and position? Dot product might be helpful for this

 

Code (CSharp):

1. Vector3 direction = (currentTargetPos - myPos).normalized;

Something close to that ^^. Been awhile since I wrote them out manually.

 

Exactly. Then once you find the direction vector all you have to do is find the dot product of the direction vector and your player's transform.right. Then if the result is positive the enemy is on the right, if it's negative then the enemy is on the left.

 

Thank you for your answers, I've done something a bit different, but you inspired me for this idea. The idea is to translate the input direction on the current target, to get the real direction (Using the Quaternion.FromToRotation method). Then, to check if the enemy is left or right from the input direction, I've to use the dot product. The thing is that something is still missing. I'd like to check if the target is within a certain angle.
But I have an idea of how to do this:

• Calculate the cross product of the translated Input direction and the "currentTargetPos - myPos" (both normalized of course).
• Compare the dot product of the direction vector with a target and the dot product of the cross product with the target.
• If the absolute value of the cross product is higher than the dot product, then it won't be considered for the final result (could also make it in a way that the detection angle could be changed, but for me it's okay)
• Then I simply get the target with the lowest dot as the new target (And if there's no target, I take the furthest target in the opposite direction, so two different checks have to be made during every loop until a valid target is found in the stick direction)

 

A capsule cast also might just work now I think of it