game-tools/Runtime/InteractionTools/InteractionToolsManager.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Sirenix.OdinInspector;

namespace KairoEngine.GameTools.InteractionTools
{
    /// <summary>
    /// Manages which interaction tool is currently on.
    /// </summary>
    public class InteractionToolsManager : MonoBehaviour
    {
        public static InteractionToolsManager instance;
        [ReadOnly] public int currentTools = 0;
        public List<GameObject> tools = new List<GameObject>();
        private List<IInteractionTool> toolInterfaces = new List<IInteractionTool>();

        private void Awake()
        {
            if(instance == null) instance = this;
            else Destroy(this);
        }

        private void Start()
        {
            RegisterInterfaces();
            ChangeTool(currentTools);
        }

        private void RegisterInterfaces()
        {
            toolInterfaces = new List<IInteractionTool>();
            for (int i = 0; i < tools.Count; i++)
            {
                IInteractionTool toolInterface = tools[i].GetComponent<IInteractionTool>();
                if(toolInterface == null) toolInterface = tools[i].GetComponentInChildren<IInteractionTool>();
                if(toolInterface != null) toolInterfaces.Add(toolInterface);
                else Debug.LogError($"No Interaction tool interface found in components on \"{tools[i].name}\"", tools[i]);
            }
        }

        public void ChangeTool(int toolIndex)
        {
            currentTools = toolIndex;
            for (int i = 0; i < toolInterfaces.Count; i++)
            {
                if(i != toolIndex) toolInterfaces[i].DisableTool();
                else toolInterfaces[i].EnableTool();
            }
        }
    }
}