wawa

using System.Linq;
using Godot;

public partial class Enemy_Controller : Area2D
{
    private Player_Controller player;
    private TileMapLayer tileMap;
    private Vector2I tileSize = new(16, 16);

    [Export] private Line2D pathfindingLine;
    private AStarGrid2D pathfindingGrid;
    private Vector2[] pathToPlayer;

    public override void _Ready()
    {
        // References
        player = GetTree().GetFirstNodeInGroup("Player") as Player_Controller;
        tileMap = GetTree().GetFirstNodeInGroup("TileMap") as TileMapLayer;
        if (tileMap == null) return;

        // Signals
        player?.Connect("PlayerFinishedAction", new Callable(this, "OnPlayerActionFinished"));

        // Snap enemy to TileMap
        GlobalPosition = tileMap.MapToLocal(tileMap.LocalToMap(GlobalPosition));

        // Pathfinding Setup
        pathfindingGrid = new AStarGrid2D();
        pathfindingGrid.Offset = tileSize / 2;
        pathfindingGrid.Region = tileMap.GetUsedRect();
        pathfindingGrid.CellSize = Vector2.One * tileSize;
        pathfindingGrid.DiagonalMode = AStarGrid2D.DiagonalModeEnum.Never;
        pathfindingGrid.Update();

        foreach (var cell in tileMap.GetUsedCells()) {
            pathfindingGrid.SetPointSolid(cell, tileMap.GetCellTileData(cell).GetCollisionPolygonsCount(0) > 0);
        }
    }

    private void OnPlayerActionFinished()
    {
        // Move toward player
        pathToPlayer = pathfindingGrid.GetPointPath((Vector2I)GlobalPosition / tileSize.X, (Vector2I)player.GlobalPosition / tileSize.Y);
        if (pathToPlayer.Length > 1)
        {
            pathToPlayer = pathToPlayer.Skip(1).ToArray();
            GlobalPosition = pathToPlayer[0];
        }
        pathfindingLine.Points = pathToPlayer;
    }
}