fixed issue when two floor's outlines overlap

grid/factory/v2/GridFactory.h

@@ -338,8 +338,15 @@ public:
 				// does the grid contain the potential neighbor?
 				const T* n2 = grid.getNodePtrFor(p);
 				if (n2 != nullptr) {
+
 					if (isBlocked(floor, n1, *n2)) {continue;}		// is there a (e.g. small) obstacle between the two?
-					grid.connectUniDir(n1, *n2);			// UNI-dir connection as EACH node is processed!
+
+					// NOTE
+					// if you have two floors at the >same< height, and their outlines overlap, this one is needed!
+					if (!n1.hasNeighbor(n2->getIdx())) {
+						grid.connectUniDir(n1, *n2);				// UNI-dir connection as EACH node is processed!
+					}
+
 				}
 
 			}