PokemonLike/Library/Utilities/StateMachine.cs

using Godot;
using PokemonLike.Library.Support;

namespace PokemonLike.Library.Utilities;

[GlobalClass]
public partial class StateMachine : Node
{
    [ExportCategory("State Machine Vars")]
    [Export] public Node Customer;
    [Export] public State CurrentState;

    public override void _Ready()
    {
        Logger.Info("Loading state machine...");
        foreach (Node child in GetChildren())
        {
            if (child is State state)
            {
                state.StateOwner = Customer;
                state.SetProcess(false);
            }
        }
    }
    
    public string GetCurrentState() => CurrentState.Name.ToString();

    public void ChangeState(State newState)
    {
        CurrentState?.ExitState();
        CurrentState = newState;
        CurrentState?.EnterState();
        foreach (Node child in GetChildren())
            if (child is State state)
                state.SetProcess(state == CurrentState);
    }
}