Jaen's fortress start hidden and re-hide after you kill Jaen

rsrc/scenarios/stealth/towns/town20.spec

@@ -270,7 +270,7 @@
 	pic 0, 4
 	ex1 -1, -1, -1
 	ex2 -1, -1, -1
-	goto -1
+	goto 43
 @disp-msg = 39
 	sdf -1, -1
 	msg 59, 60, -1
@@ -299,3 +299,10 @@
 	ex1 1, 34, -1
 	ex2 -1, -1, -1
 	goto -1
+@town-visible = 43
+	sdf -1, -1
+	msg -1, -1, -1
+	pic 0, 4
+	ex1 20, -1, -1
+	ex2 0, -1, -1
+	goto -1

rsrc/scenarios/stealth/towns/town20.xml

@@ -12,7 +12,9 @@
     <onenter condition="dead">41</onenter>
     <onexit dir="e">37</onexit>
     <timer freq="50">42</timer>
-    <flags />
+    <flags>
+        <hidden>true</hidden>
+    </flags>
     <wandering>
         <monster>13</monster>
         <monster>13</monster>

src/scenario/town.cpp

@@ -72,6 +72,8 @@ void cTown::import_legacy(legacy::town_record_type& old){
 		specials[i].import_legacy(old.specials[i]);
 	difficulty = old.difficulty;
 	strong_barriers = defy_scrying = defy_mapping = false;
+
+	// Legacy scenarios store is_hidden in an array on scenario_data_type, so that flag is imported in cScenario::import_legacy()
 }
 
 cTown::cTown(cScenario& scenario, size_t dim) : cArea(dim), scenario(&scenario), lighting(dim, boost::dynamic_bitset<>(dim)) {

src/scenario/town.hpp

@@ -90,7 +90,9 @@ public:
 	short spec_on_hostile;
 	std::array<cTimer,8> timers;
 	bool strong_barriers, defy_mapping, defy_scrying;
-	bool is_hidden, has_tavern;
+	// Whether the town STARTS OUT hidden.
+	bool is_hidden;
+	bool has_tavern;
 	short difficulty;
 	// Using std::array here so we can have .size()
 	// This'll make the transition smoother once it becomes a vector.
@@ -102,6 +104,7 @@ private:
 	boost::dynamic_bitset<> item_taken;
 public:
 	std::vector<location> door_unlocked;
+	// Whether the town IS CURRENTLY visible.
 	bool can_find;
 	long m_killed = 0;