OnMouseDrag limit (resolved)

Hi
I have a concern that I cannot solve, I try to make sure that the OnMouseDrag is limited on the x and z axes, I leave the y at 0
Unfortunately it doesn't work
Do you have an idea of the problem, thank you

Code (CSharp):

1.  
2.         Vector3 worldPoint = Input.mousePosition;
3.         worldPoint = Camera.main.ScreenToWorldPoint(worldPoint);
4.         Vector3 diffPos = worldPoint - initMousePos;
5.         diffPos.y = 0;
6.         initMousePos = Input.mousePosition;
7.  
8.         initMousePos = Camera.main.ScreenToWorldPoint(initMousePos);
9.  
10.         obj.transform.position =
11.             new Vector3(Mathf.Clamp(obj.transform.position.x + diffPos.x, -4.607f,3.77f),
12.             obj.transform.position.y,
13.             Mathf.Clamp(obj.transform.position.z + diffPos.z, -8f,5f));
14.  
15.    

 

Code (CSharp):

1. diffPos.y = 0;

does nothing in the context of this script. It's not a reference type, so it doesn't have any effect just by changing it. Further in your script you only use the x and z value of the diffPos variable. You're not assigning the y value back to anything.

 

Yes, I do want leave y at 0, which is the case
I would just like to be able to move in x and z according to a given limit

 

You don't get it...
You are setting the vector3 variable diffPos.y = 0;
You are never using that value anywhere else, so it doesn't do anything. Simply changing the value of the variable does nothing (since vector3 is a value type). You need to use it!

Essentially you're doing this

Code (CSharp):

1. float y = 0;
2. float x = someValue;
3. float z = someValue;
4.  
5. //Do something with value x
6. //Do something with value z
7.  
8. You never do anything with value y, so what should happen? You need to use value y somewhere to get the results you want, since you aren't using the entire vector3.

 

Yes I understand that I do not use the y.
Let's say I take it off, it's good in:

Code (CSharp):

1. obj.transform.position =
2.             new Vector3(Mathf.Clamp(obj.transform.position.x + diffPos.x, -4.607f,3.77f),
3.             obj.transform.position.y,
4.             Mathf.Clamp(obj.transform.position.z + diffPos.z, -8f,5f));

Now the goal is simply to be able to move my object over x and z with a limit

 

Ok, so what part doesn't work? Is it not dragging or not dragging like you want it to?

 

I solved the problem, thanks anyway