✨ Building regisery instead of single building

Data/Buildings.json

@@ -0,0 +1,5 @@
+{
+  "wall": "res://Scenes/Tiles/WallTile.tscn",
+  "farm": "res://Scenes/Tiles/FarmTile.tscn",
+  "tower": "res://Scenes/Tiles/TowerTile.tscn"
+}

Scenes/Root.tscn

@@ -1,21 +1,22 @@
 [gd_scene load_steps=5 format=3 uid="uid://c22aprj452aha"]
 
 [ext_resource type="Script" uid="uid://cudpc3w17mbsw" path="res://Scripts/System/GridManager.cs" id="1_knkkn"]
+[ext_resource type="Script" uid="uid://cfbj72nm0eovg" path="res://Scripts/System/BuildingRegistry.cs" id="1_sxhdm"]
 [ext_resource type="Script" uid="uid://bx1wj7gn6vrqe" path="res://Scripts/System/PlacementManager.cs" id="2_sxhdm"]
 [ext_resource type="PackedScene" uid="uid://doxy60afddg1m" path="res://Scenes/Entities/Player.tscn" id="3_oss8w"]
-[ext_resource type="PackedScene" uid="uid://d1pudmkg5nnhj" path="res://Scenes/Tiles/WallTile.tscn" id="3_sxhdm"]
 
 [node name="Root" type="Node2D"]
 
+[node name="BuildingRegistry" type="Node" parent="."]
+script = ExtResource("1_sxhdm")
+
 [node name="GridSystem" type="Node2D" parent="."]
 script = ExtResource("1_knkkn")
 
-[node name="PlacementSystem" type="Node2D" parent="." node_paths=PackedStringArray("Grid")]
+[node name="PlacementSystem" type="Node2D" parent="." node_paths=PackedStringArray("Grid", "Registry")]
 script = ExtResource("2_sxhdm")
-BuildingScene = ExtResource("3_sxhdm")
 Grid = NodePath("../GridSystem")
-
-[node name="WallTile" parent="." instance=ExtResource("3_sxhdm")]
+Registry = NodePath("../BuildingRegistry")
 
 [node name="Player" parent="." instance=ExtResource("3_oss8w")]
 position = Vector2(602, 324)

Scripts/System/BuildingRegistry.cs

@@ -0,0 +1,63 @@
+using System.Collections.Generic;
+using Godot;
+
+namespace AceFieldNewHorizon.Scripts.System;
+
+public partial class BuildingRegistry : Node
+{
+	private Dictionary<string, PackedScene> _registry = new();
+
+	[Export] public string JsonPath { get; set; } = "res://Data/Buildings.json";
+
+	public override void _Ready()
+	{
+		LoadFromJson(JsonPath);
+	}
+
+	public void LoadFromJson(string path)
+	{
+		var file = FileAccess.Open(path, FileAccess.ModeFlags.Read);
+		if (file == null)
+		{
+			GD.PrintErr($"[BuildingRegistry] Failed to open {path}");
+			return;
+		}
+
+		var text = file.GetAsText();
+		file.Close();
+
+		var json = new Json();
+		var error = json.Parse(text);
+		if (error != Error.Ok)
+		{
+			GD.PrintErr($"[BuildingRegistry] Failed to parse JSON: {json.GetErrorMessage()}");
+			return;
+		}
+
+		var dict = (Godot.Collections.Dictionary)json.Data;
+
+		foreach (string key in dict.Keys)
+		{
+			var scenePath = dict[key].AsString();
+			var scene = GD.Load<PackedScene>(scenePath);
+
+			if (scene != null)
+			{
+				_registry[key] = scene;
+				GD.Print($"[BuildingRegistry] Loaded building '{key}' from {scenePath}");
+			}
+			else
+			{
+				GD.PrintErr($"[BuildingRegistry] Failed to load scene for '{key}' at {scenePath}");
+			}
+		}
+	 
+		GD.Print($"[BuildingRegistry] Loaded {_registry.Count} buildings");
+	}
+
+	public PackedScene GetScene(string id)
+	{
+		_registry.TryGetValue(id, out var scene);
+		return scene;
+	}
+}

Scripts/System/BuildingRegistry.cs.uid

@@ -0,0 +1 @@
+uid://cfbj72nm0eovg

Scripts/System/PlacementManager.cs

@@ -5,11 +5,23 @@ namespace AceFieldNewHorizon.Scripts.System;
 
 public partial class PlacementManager : Node2D
 {
-    [Export] public PackedScene BuildingScene { get; set; }
     [Export] public GridManager Grid { get; set; }
+    [Export] public BuildingRegistry Registry { get; set; }
+
+    private string _currentBuildingId = "wall";
 
     private Vector2I _hoveredCell;
     private BaseTile _ghostBuilding;
+    
+    public void SetCurrentBuilding(string buildingId)
+    {
+        _currentBuildingId = buildingId;
+
+        // Replace ghost immediately
+        if (_ghostBuilding == null) return;
+        _ghostBuilding.QueueFree();
+        _ghostBuilding = null;
+    }
 
     public override void _Process(double delta)
     {
@@ -19,7 +31,10 @@ public partial class PlacementManager : Node2D
 
         if (_ghostBuilding == null)
         {
-            _ghostBuilding = (BaseTile)BuildingScene.Instantiate();
+            var scene = Registry.GetScene(_currentBuildingId);
+            if (scene == null) return;
+            
+            _ghostBuilding = (BaseTile)scene.Instantiate();
             _ghostBuilding.SetGhostMode(true);
             AddChild(_ghostBuilding);
         }
@@ -46,10 +61,13 @@ public partial class PlacementManager : Node2D
         // Left click to place
         if (Input.IsActionPressed("build_tile") && canPlace)
         {
+            var scene = Registry.GetScene(_currentBuildingId);
+            if (scene == null) return;
+            
             _ghostBuilding.FinalizePlacement();
             Grid.OccupyCell(_hoveredCell, _ghostBuilding);
 
-            _ghostBuilding = (BaseTile)BuildingScene.Instantiate();
+            _ghostBuilding = (BaseTile)scene.Instantiate();
             _ghostBuilding.SetGhostMode(true);
             AddChild(_ghostBuilding);
         }