マウスクリックを検出したい時の基底クラス

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

public class MouseHelper : MonoBehaviour
{
    
    protected bool _isDown=false;


    protected virtual void _MouseDown(){

    }

    protected virtual void _MouseUp(){

    }

    //毎フレーム読んでね
    protected void _CheckMouse(){

        if(Input.touchCount >= 1){
            
            var touch = Input.touches[0];
            
            if( touch.position.x < Screen.width - Screen.width*0.2f ){
                
                if (touch.phase == TouchPhase.Began){
                    _MouseDown();             
                }
                if (touch.phase == TouchPhase.Ended){
                    _MouseUp();
                }

            }

        }

#if UNITY_EDITOR
        if(Input.GetMouseButtonDown(0)){
            _MouseDown();
        }
        if(Input.GetMouseButtonUp(0)){
            _MouseUp();                    
        }
#endif

    }

}