How can I use Mathf.Clamp?

Questions & Answers
1

I’ve got a basic movement script going but I can’t figure out how to use Mathf.Clamp so that the player can’t do flips with the camera.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;


[RequireComponent (typeof(CharacterController))]
public class PlayerMove : MonoBehaviour {

	public float playerSpeed = 2f;
	public float mouseSens = 5f;

	[SerializeField]
	private CharacterController controller;

	[SerializeField]
	private Camera cam;

	private float moveVertical;
	private float moveHorizontal;

	private float rotationY;
	private float rotationX;

	private float maxCameraRotation = 10f;


	void Start ()
	{

		controller = GetComponent <CharacterController> ();

	}


	void Update () 
	{


		moveVertical = Input.GetAxis ("Vertical") * playerSpeed;
		moveHorizontal = Input.GetAxis ("Horizontal") * playerSpeed;

		rotationY = Input.GetAxis ("Mouse X") * mouseSens;
		rotationX = Input.GetAxis ("Mouse Y") * mouseSens;

		Vector3 movement = new Vector3 (moveHorizontal, 0f, moveVertical);

		transform.Rotate (0f, rotationY, 0f);
		cam.transform.Rotate (-Mathf.Clamp (rotationX, -maxCameraRotation, maxCameraRotation), 0f, 0f);

		movement = transform.rotation * movement;
		controller.Move (movement * Time.deltaTime);

	}
}

That’s the whole script, including my current attempt. Help would be appreciated!

2

In this case, don’t use transform.Rotate. The value used in this function is simply the direction in which to turn the object, so clamping that simply limits how fast the object can turn. Instead, you have to do the x rotation manually.

float rotationX = 0.0f;

void Update ()
{
    rotationX += mouseSens * Input.GetAxis ("Mouse Y") * Time.deltaTime;
    rotationX = Mathf.Clamp (rotationX, -maxCameraRotation, maxCameraRotation);
    
    cam.transform.eulerAngles = new Vector3(rotationX, transform.eulerAngles.y, transform.eulerAngles.z);
}