module relations and module staging

Assets/Engine/Runtime/Modules/Module.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using EscapeRoomEngine.Engine.Runtime.Requirements;
 using EscapeRoomEngine.Engine.Runtime.Utilities;
 using UnityEngine;
 using Logger = EscapeRoomEngine.Engine.Runtime.Utilities.Logger;
@@ -21,6 +22,9 @@ namespace EscapeRoomEngine.Engine.Runtime.Modules
             Orientation.North, Orientation.East, Orientation.South, Orientation.West
         });
 
+        public readonly List<Module> relatedModules = new();
+
+        public ModuleState State { get; private set; }
         /// <summary>
         /// Get the space relative (<i>SR</i>) position of this module.
         /// </summary>
@@ -29,7 +33,6 @@ namespace EscapeRoomEngine.Engine.Runtime.Modules
         /// Get the room relative (<i>RR</i>) position of this module.
         /// </summary>
         internal Vector2Int RrPosition => space.ToRoomRelative(SrPosition);
-        internal ModuleState State { get; private set; }
 
         internal readonly ModuleDescription description;
         internal Orientation orientation;
@@ -52,6 +55,13 @@ namespace EscapeRoomEngine.Engine.Runtime.Modules
             return description.types.Contains(type);
         }
 
+        internal bool CheckRequirements()
+        {
+            return PreconditionRequirement.CheckPreconditions(this, space) &&
+                   PlacementRequirement.TryPlacing(this, space) &&
+                   OrientationRequirement.TryOrienting(this, space);
+        }
+
         /// <summary>
         /// Place this module with a position relative to the room.
         /// </summary>