Babushka/scripts/CSharp/Common/CharacterControls/DetectionCross.cs

using Godot;

namespace Babushka.scripts.CSharp.Common.CharacterControls;

/// <summary>
/// Tracks where an interactable object is with regards to the player.
/// </summary>
public partial class DetectionCross : Node2D
{
    [Export] private Detector _left;
    [Export] private Detector _right;
    [Export] private Detector _up;
    [Export] private Detector _down;
    [Export] private bool _active = true;

    [Signal] public delegate void InteractableDetectedLeftEventHandler(bool flag);
    [Signal] public delegate void InteractableDetectedRightEventHandler(bool flag);
    [Signal] public delegate void InteractableDetectedUpEventHandler(bool flag);
    [Signal] public delegate void InteractableDetectedDownEventHandler(bool flag);

    private bool _leftOccupied;
    private bool _rightOccupied;
    private bool _upOccupied;
    private bool _downOccupied;
    public bool LeftOccupied {
        get
        {
            return _leftOccupied;
        }
        private set
        {
            EmitSignal(SignalName.InteractableDetectedLeft, value);
            _leftOccupied = value;
        }
    }

    public bool RightOccupied
    {
        get
        {
            return _rightOccupied;
        }
        private set
        {
            EmitSignal(SignalName.InteractableDetectedRight, value);
            _rightOccupied = value;
        }
    }

    public bool UpOccupied
    {
        get
        {
            return _upOccupied;
        }
        private set
        {
            EmitSignal(SignalName.InteractableDetectedUp, value);
            _upOccupied = value;
        }
    }

    public bool DownOccupied
    {
        get
        {
            return _downOccupied;
        }
        private set
        {
            EmitSignal(SignalName.InteractableDetectedDown, value);
            _downOccupied = value;
        }
    }

    public bool IsActive
    {
        get => _active;
        set => _active = value;
    }

    public override void _Ready()
    {
        _right.InteractableEntered += () => RightOccupied = true;
        _right.InteractableExited += () => RightOccupied = false;
        _left.InteractableEntered += () => LeftOccupied = true;
        _left.InteractableExited += () => LeftOccupied = false;
        _up.InteractableEntered += () => UpOccupied = true;
        _up.InteractableExited += () => UpOccupied = false;
        _down.InteractableEntered += () => DownOccupied = true;
        _down.InteractableExited += () => DownOccupied = false;
    }

    public void ActivateUp()
    {
        _up.IsActive = true;
        _down.IsActive = false;
        _left.IsActive = false;
        _right.IsActive = false;
    }
    
    public void ActivateDown()
    {
        _up.IsActive = false;
        _down.IsActive = true;
        _left.IsActive = false;
        _right.IsActive = false;
    }
    
    public void ActivateRight()
    {
        _up.IsActive = false;
        _down.IsActive = false;
        _left.IsActive = false;
        _right.IsActive = true;
    }
    
    public void ActivateLeft()
    {
        _up.IsActive = false;
        _down.IsActive = false;
        _left.IsActive = true;
        _right.IsActive = false;
    }
}