project-reset/Assets/Scripts/Units/InteractionHandler.cs

using Reset.Items;
using UnityEngine;
using UnityEngine.InputSystem;

namespace Reset.Units{
    public class InteractionHandler : MonoBehaviour{
        private PlayerEnvironmentManager envManager;
        private IInventory inventory;
        private EnvironmentObserver observer;
        
        void Awake(){
            envManager = GetComponent<PlayerEnvironmentManager>();
            inventory = GetComponent<IInventory>();
            
            observer = envManager.FindObserverFromString("itemdrop");

            observer.active = true;
        }

        public void InteractWith(GameObject target){
            IInteractable interactable = target.GetComponent<IInteractable>();
            
            if (interactable == null) {
                Debug.LogError("This item cannot be interacted with, it has no Interactable interface");
                return;
            }

            if (target.GetComponent<ItemDrop>()) {
                inventory.AddToInventory(target.GetComponent<ItemDrop>().item);
            }
            
            interactable.Interact();
            
            // Don't do any actions that use the same button (hard set to Jump for now)
            Debug.Log($"Just collected the item, consuming the input  @ {Time.time}.");
            GetComponent<PlayerControls>().SendInputBlock("Jump");
        }
        
        void OnInteract(){
            CheckForInteraction();
        }

        private void CheckForInteraction(){
            if (observer.active && observer.Evaluate(gameObject)) {
                InteractWith(observer.hit.transform.gameObject);
            }
        }
    }
}