Question The length of the normalized vector changes with the distance of the cursor from the main character.

I am making a 2D Shooter-Platform game and learning new stuff. But I don't understand why the normalized vector size keeps changing. I will use it for the direction of my rigid body velocity. If vector size changes, velocity changes too. I calculate normalized vectors with standard calculation, not with the integrated method.

This is to calculate the direction vector.

Code (CSharp):

1. Vector3 cursorVector =  Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,-10f)) - new Vector3(transform.position.x,transform.position.y,0f);
2.         aimDirection = cursorVector / cursorVector.magnitude;
3.         aimVector = transform.position + aimDirection;

And this is for velocity.

Code (CSharp):

1. instantiated.GetComponent<Rigidbody2D>().velocity = aimDirection * projectileSpeed;

 

You are taking a Vector3 (cursorVector), converting it to a unit vector by scaling each dimension by the reciprical magnitude in all 3 dimensions (aimDirection) and then using just x and y for your Rigidbody 2D (the z component is discarded). You cannot take just the x and y components of a 3D unit vector and expect them to give you a 2D unit vector (unless z = 0, which in your case it does not).

 

I changed and it works like a maximum direction vector. if I gave closer inputs to my character, the magnitude keeps changing.