VerticalOnlyCamera.cs

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

public class VerticalOnlyCamera : MonoBehaviour
{
// This Camera move only verticle.
// So camera transform in player children.
// このカメラは縦の視点移動のみです。利用する場合はこのクラスをアタッチするカメラをプレイヤーの子にしてください。

	private Vector3 angle;

	[SerializeField]
	private float sensitivityY;

	void Start()
	{

		angle = transform.eulerAngles;

		//Lock Cursor
		Cursor.visible = false;
		Cursor.lockState = CursorLockMode.Locked;

	}


	// Update is called once per frame
	void LateUpdate()
	{
		angle = transform.eulerAngles;

		if (Input.GetKey(KeyCode.Backspace)) UnityEditor.EditorApplication.isPlaying = false;
		if (Input.GetKey(KeyCode.E))
		{
			Cursor.visible = true;
			Cursor.lockState = CursorLockMode.None;
		}

		float vertical;

		vertical = Input.GetAxis("Mouse Y") * sensitivityY;

		angle.x -= vertical * Time.deltaTime;
		transform.eulerAngles = angle;
	}
}