Restore thingToIgnore check.

I guess the check for "blocking thing" passes if it is the same def, so thingToIgnore needs to be kept?.

Source/OverMineable/BlueprintOverFogged.cs

@@ -69,9 +69,14 @@ public static AcceptanceReport BlueprintExistsAcceptance(Map map, IntVec3 center
 	}
 
 
-	// Change Conduit PlaceWorker to allow conduits over conduits.
-	// Note: before, I fixed this to properly use the thingToIgnore argument.
-	// This is redundant now ... but vanilla is technically incorrect to not use that arg.
+	// 1) Change Conduit PlaceWorker to allow conduits over conduits
+
+	// 2) TL;DR: actually ignore the thingToIgnore argument
+	//This patch fixes a vanilla bug/oversight, that forgot to check thingToIgnore in conduit's placeworker.
+	//This wasn't a problem in vanilla, but with replace stuff, conduit blueprints would disappear when doors are opened
+	//Since revealing new areas now triggers re-checking blueprints, power conduit blueprints would check their tile.
+	//They'd find themselves, and determine they can't exist because there's already a power conduit there.
+	//The thingToIgnore arguments already exists, to, you know, ignore that. But it wasn't checked.
 	[HarmonyPatch(typeof(PlaceWorker_Conduit), "AllowsPlacing")]
 	public static class FixConduitPlaceWorker
 	{
@@ -111,15 +116,28 @@ public static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstructio
 					foundLdLoc = true;
 
 					// At start of loop, insert:
-					// if(thingList[i].def.building.isPowerConduit)
-					//	continue;
 
+					// Noop with start of loop label
 					yield return new CodeInstruction(OpCodes.Nop) { labels = i.labels };//start of loop label
 					i.labels = new List<Label>();
+
+
+					// if(thingList[i] == thingToIgnore)
+					//	continue;
 					foreach (CodeInstruction ci in currentThing)
 						yield return new CodeInstruction(ci.opcode, ci.operand);//thingList[i] (Thing)
-					yield return new CodeInstruction(OpCodes.Call, AccessTools.Method(typeof(FixConduitPlaceWorker), nameof(IsConduit)));
-					yield return new CodeInstruction(OpCodes.Brtrue, continueLabel);// if(thingList[i].IsConduit()) continue;
+
+					yield return new CodeInstruction(OpCodes.Ldarg_S, 5);//thingToIgnore
+					yield return new CodeInstruction(OpCodes.Beq, continueLabel);//if( ... == ... ) continue;
+
+
+					// if(thingList[i].def.building.isPowerConduit)
+					//	continue;
+					foreach (CodeInstruction ci in currentThing)
+						yield return new CodeInstruction(ci.opcode, ci.operand);//thingList[i] (Thing)
+
+					yield return new CodeInstruction(OpCodes.Call, AccessTools.Method(typeof(FixConduitPlaceWorker), nameof(IsConduit))); // ... .IsConduit()
+					yield return new CodeInstruction(OpCodes.Brtrue, continueLabel);// if(...) continue;
 				}
 				yield return i;
 			}