RuinAdventurer/Scripts/Helpers/DecorationHandler.cs

using Godot;
using System.Collections.Generic;

public class DecorationHandler
{
    public static void Spawn(List<TileRenderData> tiles, Dictionary<string, MeshInstance3D> decorationMeshes)
    {
        foreach (var data in tiles)
        {
            Node3D tileNode = data.Tile.DecorationNode;

            foreach (var placeholder in data.Placeholders)
            {
                string key = placeholder.name.ToLower();

                var decoration = new MeshInstance3D();

                if (decorationMeshes.ContainsKey(key))
                {
                    decoration.Mesh = decorationMeshes[key].Mesh;
                }
                else
                {
                    continue;
                }

                decoration.Position = placeholder.pos;

                decoration.Rotate(Vector3.Up, Mathf.DegToRad(-90));

                if (key == "light")
                {
                    decoration.AddChild(new OmniLight3D()
                    {
                        OmniAttenuation = 2f,
                        LightColor = new Color("#eae7ad"),
                        ShadowEnabled = true,
                        LightEnergy = 5f,
                        LightIndirectEnergy = 1.5f,
                        Position = new Vector3(0.5f, 0, 0)
                    });
                }

                tileNode.AddChild(decoration);
            }
        }
    }
}