Added robot asset and worked on placeholders. Placeholders are now able to be added to the game and later replaced by objects (Tested with Robot for now)

Scripts/Helpers/Placeholder.cs

@@ -0,0 +1,13 @@
+using Godot;
+
+public class Placeholder
+{
+    string name;
+    public Vector3 pos;
+
+    public Placeholder(string name, Vector3 pos){
+        this.name = name;
+        this.pos = pos;
+        GD.Print($"Generated placeholder {this.name}");
+    }
+}

Scripts/Helpers/Placeholder.cs.uid

@@ -0,0 +1 @@
+uid://cng1pe6j20vrr

Scripts/Helpers/ResourceLoader.cs

@@ -9,6 +9,11 @@ public partial class ResourceLoader
 	{
 		return GD.Load<PackedScene>($"res://Prefabs/Layer.tscn");
 	}
+
+	public static PackedScene LoadRobotPrefab()
+	{
+		return GD.Load<PackedScene>($"res://Prefabs/Robot.tscn");
+	}
 	
 	public static Dictionary<string, MeshInstance3D> LoadTiles()
 	{

Scripts/Helpers/WFC.cs

@@ -53,6 +53,7 @@ public class WFC
 		["corner_down_right"] = new() { Direction.Down, Direction.Right },
 
 		["junction"] = new() { Direction.Up, Direction.Down, Direction.Left, Direction.Right },
+		["gate"] = new() { Direction.Up, Direction.Down, Direction.Left, Direction.Right },
 
 		["border"] = new() { }
 	};
@@ -78,6 +79,8 @@ public class WFC
 		["end_left"] = 0.2f,
 		["end_right"] = 0.3f,
 
+		["gate"] = 0.1f,
+
 		["border"] = 0.0f
 	};