connect multiple rooms with doors

Assets/Escape Room Engine/Engine/Scripts/SpawnPassage.cs

@@ -0,0 +1,23 @@
+using Escape_Room_Engine.Engine.Scripts.Modules;
+using UnityEngine;
+
+namespace Escape_Room_Engine.Engine.Scripts
+{
+    /// <summary>
+    /// A SpawnPassage is a type of passage used solely for entering the very fist space. It always places the entrance door at (0, 0).
+    /// </summary>
+    public class SpawnPassage : Passage
+    {
+        internal SpawnPassage() {}
+        
+        internal override void ConnectTo(DoorModule door)
+        {
+            // this door module does not really exist, but is required since a passage must include an entry
+            // it also defines, where the exit will be placed (in this case always at the play space origin)
+            fromOut = new DoorModule(DoorType.Exit, null);
+            fromOut.Place(new Vector2Int(0, 0));
+            
+            base.ConnectTo(door);
+        }
+    }
+}