Add Velocity to object twards mouse position at consistent speed

I have an issue where, if the mouse is close to the object the speed is slow compared to the mouse being far away from the object the speed is fast.


I want the object 'launched' twards the mouse position at a consistent speed regardless how close/far from the mouse it is.

The attached screenshots show the balls moving too fast(balls spread out) when far, and too slow(balls grouped) when close.

What am I doing wrong here?



_destination is the mouse position

Code (CSharp):

1.    public void GoToDestination(Vector3 _destination)
2.     {
3.         //rb.AddRelativeForce(_destination);
4.         //_destination.y = -_destination.y;
5.         //_destination = (_destination - transform.position).normalized;
6.         //rb.velocity = Vector3.Cross(transform.position, _destination) * speed;//(_destination.normalized - transform.position.normalized) * speed;
7.         //rb.AddForce(_destination * speed);
8.         //destination = _destination;      
9.         rb.velocity = (_destination - transform.position).normalized * (speed);
10.         //destination = _destination;
11.     }

 

can it be, that because of using two vectors3 (different z distance) the ball is moving with the constant speed but you can see it as moving with different speed ? I mean, try to make _destination.z the same as the transform.position.z. Or just try to use vector2: rb.velocity = vector2 _destination - (vector2) transform.position

 

Worked! But why does the z affect this?

 

as example:
You makes click 2. The z-position from the mouse has the z-position from the camera (-10 by default) (ok, I am not sure about that the z-position from the mouse is the same as camera z-position or zero but the next idea will still explain the different speed of the moving). Now the object is running to the position of the click 2 and going along the b - line. But your monitor just cannot show the change in the z-axe (all 3d games are fakes in the 2d on the screen). Also you can see only the projection from the current way. This will be e- line. Still the real way from the object is b-line: and b = square root (e*e + c*c).

And as MelvMay said, don't be shy to use vector2 in the 2d or you can get a headache sometimes with the z-position.