using Godot;
using System;
using System.Collections.Generic;

public partial class GridMap2D : Node2D
{
    [Export]
    public bool _showMarkers = true;
    public int _cellSize = 16;
    public Area2D _playArea;
    public GridMarker _gridMarker;
    public List<List<GridMarker>> _gridMarkers = new();

    public override void _Ready()
    {
        base._Ready();
        _playArea = GetNode<Area2D>("PlayArea");
        _gridMarker = GetNode<GridMarker>("GridMarker");
        CollisionShape2D bounds = _playArea.GetNode<CollisionShape2D>("Bounds");
        int gridCellsX = (int)bounds.Shape.GetRect().Size.X / _cellSize, gridCellsY = (int)bounds.Shape.GetRect().Size.Y / _cellSize;
        for (int i = 0; i < gridCellsY; i++)
        {
            _gridMarkers.Add([]);
            for (int j = 0; j < gridCellsX; j++)
            {
                GridMarker newGridMarker = (GridMarker)_gridMarker.Duplicate();
                newGridMarker._address = new Vector2(j, i);
                newGridMarker.Position = new Vector2(_playArea.Position.X - bounds.Shape.GetRect().Size.X / 2 + (j+.5f)*_cellSize, _playArea.Position.Y - bounds.Shape.GetRect().Size.Y / 2 + (i+.5f)*_cellSize);
                newGridMarker.Modulate = new Color(((i+j)%2 == 0 ? "#ffffff" : "#000000")+(_showMarkers ? "ff" : "00"));
                _gridMarkers[i].Add(newGridMarker);
                AddChild(newGridMarker);
            }
        }
        _gridMarker.QueueFree();
    }
}