ClickRPG/Assets/Scripts/ClickController.cs

using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.InputSystem;

public interface IInteractable
{
    string GetInteractPrompt(); 
    void OnInteract(); 
}

public class ClickController : MonoBehaviour
{
    [SerializeField] private LayerMask layerMask;
    [SerializeField] private TextMeshProUGUI promptText;

    void Update ()
    {
        Hover();
        if (Mouse.current.rightButton.wasPressedThisFrame)
            Click();

    }

    void Click ()
    {
        Vector2 mousePos = Mouse.current.position.ReadValue();
        Ray ray = Camera.main.ScreenPointToRay(mousePos);
        RaycastHit hit;

        // Shoot a raycast from our mouse to what ever we are pointing at.
        if (Physics.Raycast(ray, out hit, 1000, layerMask))
        {
            // This single block now handles NPCs, ItemObjects, and more!
            if (hit.collider.TryGetComponent(out IInteractable interactable))
            {
                interactable.OnInteract();
            }
            else if (hit.collider.TryGetComponent(out Enemy enemy))
            {
                // Combat targeting is a different action, so it's fine to keep it separate.
                Debug.Log("Enemy Clicked");
                Player.Current.SetTarget(enemy);
            }
            else if (hit.collider.gameObject.layer == LayerMask.NameToLayer("Ground"))
            {
                Debug.Log("Ground Clicked");
                Player.Current.SetTarget(null);
                Player.Current.Controller.MoveToPosition(hit.point);
            }
        }
    }
    void Hover ()
    {
        Vector2 mousePos = Mouse.current.position.ReadValue();
        Ray ray = Camera.main.ScreenPointToRay(mousePos);
        RaycastHit hit;
        // Shoot a raycast from our mouse to what ever we are pointing at.
        if (Physics.Raycast(ray, out hit, 1000, layerMask))
        {
            //int hitLayer = hit.collider.gameObject.layer;           
             //if (hitLayer == LayerMask.NameToLayer("Interactable"))
             if(hit.collider.TryGetComponent(out IInteractable interactable))
            {
                // Set the position of the prompt to the mouse position
                promptText.rectTransform.position = mousePos + new Vector2(15, -15);
                promptText.gameObject.SetActive(true);
                promptText.text = interactable.GetInteractPrompt();
                if (hit.collider.TryGetComponent(out Character character))
                {
                    HealthBarUI.instance.UpdateInfoPanel(character.charName, character.level, character.attitude);
                }
                else
                {
                    //Debug.Log("Something Else Hovered");
                }
            }
            else
            {
                //Debug.Log("Something Else Hovered");
            }
        }
    }
}