AppleHillsProduction/Assets/Scripts/Dialogue/DialogueComponent.cs

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

namespace Dialogue
{
    public class DialogueComponent : MonoBehaviour
    {
        [SerializeField]
        private RuntimeDialogueGraph runtimeGraph;
        private Dictionary<string, RuntimeDialogueNode> _nodeLookup = new Dictionary<string, RuntimeDialogueNode>();
        private RuntimeDialogueNode _currentNode;

        private void Start()
        {
            foreach (var node in runtimeGraph.allNodes)
            {
                _nodeLookup[node.nodeID] = node;
            }
            
            if(string.IsNullOrEmpty(runtimeGraph.entryNodeID))
            {
                EndDialogue();
                return;
            }
            
            ShowNode(runtimeGraph.entryNodeID);
        }

        private void Update()
        {
            if(Mouse.current.leftButton.wasPressedThisFrame && _currentNode != null)
            {
                if(string.IsNullOrEmpty(_currentNode.nextNodeID))
                {
                    EndDialogue();
                }
                else
                {
                    ShowNode(_currentNode.nextNodeID);
                }
            }
        }

        private void ShowNode(string nodeID)
        {
            if (!_nodeLookup.ContainsKey(nodeID))
            {
                EndDialogue();
                return;
            }
            
            _currentNode = _nodeLookup[nodeID];
            Debug.Log($"{runtimeGraph.speakerName}: {_currentNode.dialogueLine}");
        }

        private void EndDialogue()
        {
            Application.Quit();
        }
    }
}