no overlap requirement

Assets/Escape Room Engine/Engine/Scripts/Requirements/NoOverlap.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+using Escape_Room_Engine.Engine.Scripts.Modules;
+using UnityEngine;
+
+namespace Escape_Room_Engine.Engine.Scripts.Requirements
+{
+    [CreateAssetMenu(menuName = "Requirements/No Overlap")]
+    public class NoOverlap : PlacementRequirement
+    {
+        public override IEnumerable<Vector2Int> PlacementCandidates(Module module, Space space)
+        {
+            var edgePositions = space.rrDimensions.EveryPosition;
+            
+            space.Modules.ForEach(m => edgePositions.Remove(m.SrPosition));
+
+            return edgePositions;
+        }
+    }
+}