using Godot;
using Polonium.Attributes;

namespace GlobalClasses;
[ProxyNode]
[GlobalClass]
[Tool]
public partial class SelectableTileMapLayer : TileMapLayer
{
    [Signal]
    public delegate void CellSelectedEventHandler(Vector2I pos);

    [Signal]
    public delegate void CellEnteredEventHandler(Vector2I pos);
    private Vector2I HoveredCell { get; set; } = new Vector2I(-1, -1);

    public sealed override void _Process(double delta)
    {
        
        Vector2 mousePos = GetGlobalMousePosition();
        Vector2 localMousePos = ToLocal(mousePos);
        Vector2I cell = LocalToMap(localMousePos);
        if(cell != HoveredCell)
        {
            EmitSignalCellEntered(cell);
            HoveredCell = cell;
        }
        __Process(delta);
        base._Process(delta);
    }
    
    public override void _UnhandledInput(InputEvent @event)
    {
        if (@event is InputEventMouseButton mouseEvent)
            if (mouseEvent.ButtonIndex == MouseButton.Left && mouseEvent.Pressed)
                EmitSignalCellSelected(HoveredCell);
    }
    [ProxyMethod]
    public virtual void __Process(double delta)
    {
    }
}