Make a character controller rotate to the same y axis as camera when an input is held?

I have an FPS Controller in my game (set up to a mouse orbit script) and I'm having trouble. I need a code that rotates the player to the same y-axis as the camera when the input "Aim" is held. The camera also isn't attached to the player because I'm using my own version of the mouse orbit script where the camera can't be a child of the player.
Thanks!

 

By axis do you mean rotation? As in the character is looking right and the camera is looking forward and you want the character to look in the direction of the camera when aiming? If so:

Code (csharp):

1. using UnityEngine;
2.  
3. public class Character : MonoBehaviour
4. {
5.     [SerializeField]
6.     private float aimSpeed;
7.  
8.     private void Update()
9.     {
10.         if (Input.GetKey(KeyCode.Mouse1)) // For right click (could be Mouse2 I can't test it right now)
11.             Aim();
12.     }
13.     private void Aim()
14.     {
15.         Vector3 aimRotation = new Vector3(transform.rotation.x, Camera.main.transform.rotation.y, transform.rotation.z);
16.         transform.rotation = Vector3.Lerp(transform.rotation, aimRotation, Time.deltaTime * aimSpeed);
17.     }
18. }

Give that a try and let me know if it works.

 

Thanks, but I'm not great with Keycodes. I usually use..

Code (CSharp):

1. if Input.(GetButton("Aim"))

How would I change it to that? Would I just replace keycode mouse1 to it?

By the way, you're right. Mouse1 is right click and mouse 2 is scroll wheel click

 

Yeah replace:

Code (csharp):

1. if (Input.GetKey(KeyCode.Mouse1))

with:

Code (csharp):

1. if (Input.GetButton("Aim"))

 

I tried the script and got a ton of errors.

Assets/AimRotate.cs(15,51): error CS0103: The name `transform' does not exist in the current context

Assets/AimRotate.cs(15,107): error CS0103: The name `transform' does not exist in the current context

Assets/AimRotate.cs(15,128): error CS1502: The best overloaded method match for `UnityEngine.Vector3.Vector3(float, float, float)' has some invalid arguments

Assets/AimRotate.cs(15,128): error CS1503: Argument `#1' cannot convert `object' expression to type `float'

Assets/AimRotate.cs(16,51): error CS0103: The name `transform' does not exist in the current context

Assets/AimRotate.cs(16,46): error CS1502: The best overloaded method match for `UnityEngine.Vector3.Lerp(UnityEngine.Vector3, UnityEngine.Vector3, float)' has some invalid arguments

Assets/AimRotate.cs(16,46): error CS1503: Argument `#1' cannot convert `object' expression to type `UnityEngine.Vector3'

Assets/AimRotate.cs(16,17): error CS0103: The name `transform' does not exist in the current context

 

Forgot to derive from MonoBehaviour (as this script is being attached to a GameObject) I've edited my original code so it should work.

Code (csharp):

1. public class Character

becomes:

Code (csharp):

1. public class Character : MonoBehaviour

 

That definetly made it go down but 2 of them are still left.

Assets/AimRotate.cs(16,46): error CS1502: The best overloaded method match for `UnityEngine.Vector3.Lerp(UnityEngine.Vector3, UnityEngine.Vector3, float)' has some invalid arguments

Assets/AimRotate.cs(16,46): error CS1503: Argument `#1' cannot convert `object' expression to type `UnityEngine.Vector3'

 

Try changing the line 16 to this:

Code (CSharp):

1. transform.rotation= Quaternion.Lerp(transform.rotation, Quaternion.Euler(aimRotation), Time.deltaTime* aimSpeed);

 

This should fix the last of them.

 

One more left. I'm sorry I'm havig so much trouble but I not very good with C#. I usually use JavaScript.

Assets/AimRotate.cs(17,1): error CS8025: Parsing error

 

You are probably having problems with your brackets & syntax, check them.

 

It still doesn't work. I don't have any errors, but I do get this...
Here's the script with all of the changes so it doesn't too confusing...

Code (CSharp):

1. using UnityEngine;
2.  
3. public class Character : MonoBehaviour
4. {
5.     [SerializeField]
6.     private float aimSpeed;
7.    
8.     private void Update()
9.     {
10.         if (Input.GetButton("Aim")) // For right click (could be Mouse2 I can't test it right now)
11.             Aim();
12.     }
13.     private void Aim()
14.     {
15.         Vector3 aimRotation = new Vector3(transform.rotation.x, Camera.main.transform.rotation.y, transform.rotation.z);
16.         transform.rotation= Quaternion.Lerp(transform.rotation, Quaternion.Euler(aimRotation), Time.deltaTime* aimSpeed);
17.     }}

 

"Check to see if the file name and class name match" They should be the same

 

They are. how do i fix it

 

Notice how the file's name is AimRotate but the class name inside the file is Character. Change Character to AimRotate in the script.

 

Here's a JavaScript version of the code. May be easier to work with.

Code (JavaScript):

1. #pragma strict
2.  
3. @SerializeField
4. private var aimSpeed : float;
5.  
6. function Update() {
7.     if (Input.GetButton("Aim"))
8.         Aim();
9. }
10. function Aim() {
11.     var aimRotation : Vector3 = Vector3(transform.rotation.x, Camera.main.transform.rotation.y, transform.rotation.z);
12.     transform.rotation = Quaternion.Lerp(transform.rotation, Quaternion.Euler(aimRotation), Time.deltaTime * aimSpeed);
13. }

 

It sort of worked! The thing is, for some reason it rotates the player to the y rotation of 0.8790234. I looked at my camera and nothing matches the number. Here are my camera's numbers so maybe someone could explain this to me.

Camera:

Position:
X-1094.603
Y-1.633766
Z-1011.637

Rotation:
X-0
Y-234.1831
Z-0

Scale:
X-1
Y-1
Z-1

This is in edit mode of course.

 

Sorry I haven't been able to test until now which is why I've made so many mistakes. Just tested this out and it works perfectly:

Code (JavaScript):

1. #pragma strict
2.  
3. @SerializeField
4. var aimSpeed : float;
5.  
6. function Update () {
7.     if (Input.GetKey(KeyCode.Mouse1))
8.         Aim();
9. }
10. function Aim() {
11.     var aimRotation : Vector3 = transform.rotation.eulerAngles;
12.     aimRotation.y = Camera.main.transform.rotation.eulerAngles.y;
13.     transform.rotation = Quaternion.Lerp(transform.rotation, Quaternion.Euler(aimRotation), Time.deltaTime * aimSpeed);
14. }

Try that out and let me know if it works for you too.

 

Oh my gosh, thank you so much!!! It works perfectly!!! I'm sorry I had so much trouble, but you we're still a lot of help. A lot of people on here are jerks. Again, thanks!!! I just Have one more question. How would I make it work with the Horizontal and Vertical axis. I'm going to use it instead of my current rotation script.

 

This should work:

Code (JavaScript):

1. #pragma strict
2.  
3. @SerializeField
4. var aimSpeed : float;
5.  
6. function Update () {
7.    if (Input.GetKey(KeyCode.Mouse1))
8.         Aim();
9. }
10. function Aim() {
11.     var aimRotation : Vector3 = Camera.main.transform.rotation.eulerAngles;
12.     aimRotation.z = transform.rotation.eulerAngles.z;
13.     transform.rotation = Quaternion.Lerp(transform.rotation, Quaternion.Euler(aimRotation), Time.deltaTime * aimSpeed);
14. }

 

Just edited my post (I read your new question wrong).

 

I was looking more to do the same thing as the Aim script but only when you move. Here's what I tried

Code (CSharp):

1. #pragma strict
2. @SerializeField
3. var aimSpeed : float;
4. function Update () {
5.     if (Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical"))
6.         Aim();
7. }
8. function Aim() {
9.     var aimRotation : Vector3 = transform.rotation.eulerAngles;
10.     aimRotation.y = Camera.main.transform.rotation.eulerAngles.y;
11.     transform.rotation = Quaternion.Lerp(transform.rotation, Quaternion.Euler(aimRotation), Time.deltaTime * aimSpeed);
12. }

 

I don't think I fully understand what you're trying to do but you can try this:

Code (JavaScript):

1. #pragma strict
2. @SerializeField
3. private var aimSpeed : float;
4. function Update() {
5.     Aim();
6. }
7. function Aim() {
8.     var xRotation : float = Input.GetAxis("Vertical");
9.     var yRotation : float = Input.GetAxis("Horizontal");
10.     transform.Rotate(xRotation, yRotation, 0, Time.deltaTime * aimSpeed);
11. }

 

Sorry, I know it's been a while. I have another question (no surprise). I want to reverse the order of this script. By that I mean instead of the player changing the camera's rotation, I want a certain empty gameobject to change the camera's rotation. I'm really sorry again for asking so many questions but I'm not great at coding. Thanks for the help!

 

By the way I figured out the movement thing I asked about before.