using Godot;
using System;


public partial class TestMap : TileMapLayer
{
	/// <summary>
	/// The last cell that was highlighted. Used to avoid unnecessary updates.
	/// </summary>
	private Vector2I _lastHighlightCell;
	private readonly Vector2I _highlightTileCoord = new(0, 5);
	private readonly Vector2I _vector2INegOne = new(-1, -1);
	// Called when the node enters the scene tree for the first time.
	public override void _Ready()
	{
		// Initialize the lastHighlightCell to an invalid value.
		_lastHighlightCell = _vector2INegOne;
	}

	/// <summary>
	/// Called every frame.
	/// </summary>
	/// <param name="delta">the elapsed time since the previous frame.</param>
	public override void _Process(double delta)
	{
		Vector2 mousePos = GetLocalMousePosition();
		Vector2I cell = LocalToMap(mousePos);

		if (cell != _lastHighlightCell)
		{
			if (_lastHighlightCell != _vector2INegOne)
			{
				EraseCell(_lastHighlightCell);
			}
			_lastHighlightCell = cell;
			SetCell(cell, 0, _highlightTileCoord);
		}
	}

}