Raycaster로 버튼 누르기

https://answers.unity.com/questions/1526663/detect-click-on-canvas.html

 

 

 

 

 

 

 

using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class FakeTouch : MonoBehaviour
{
    // Normal raycasts do not work on UI elements, they require a special kind
    GraphicRaycaster raycaster;

    void Awake()
    {
        // Get both of the components we need to do this
        this.raycaster = GetComponent<GraphicRaycaster>();
    }

    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Q))
        {
            Debug.Log("Press Q");

            //Set up the new Pointer Event
            PointerEventData pointerData = new PointerEventData(EventSystem.current);
            List<RaycastResult> results = new List<RaycastResult>();

            //Raycast using the Graphics Raycaster and mouse click position
            pointerData.position = Input.mousePosition;
            raycaster.Raycast(pointerData, results);

            //For every result returned, output the name of the GameObject on the Canvas hit by the Ray
            foreach (RaycastResult result in results)
            {
                Debug.Log("Hit " + result.gameObject.name);

                Button button = result.gameObject.GetComponent<Button>();

                if (button != null)
                {
                    button.onClick.Invoke();
                }
            }
        }
    }
}