Allow towns to not die no matter how many monsters are killed

src/classes/party.hpp

@@ -110,7 +110,7 @@ public:
 	std::vector<cTimer> party_event_timers;
 	std::set<int> spec_items;
 	std::set<int> help_received;
-	short m_killed[200]; // monsters killed per town, I think
+	long m_killed[200]; // monsters killed per town
 	long long total_m_killed, total_dam_done, total_xp_gained, total_dam_taken;
 	std::string scen_name;
 private:

src/classes/town.cpp

@@ -179,6 +179,11 @@ bool cTown::cWandering::isNull(){
 	return true;
 }
 
+bool cTown::is_cleaned_out(long m_killed) {
+	if(max_num_monst < 0) return false;
+	return m_killed >= max_num_monst;
+}
+
 void cTown::set_up_lights() {
 	using namespace std::placeholders;
 	short rad;

src/classes/town.hpp

@@ -76,7 +76,7 @@ public:
 	rectangle in_town_rect;
 	std::vector<cItem> preset_items;
 	std::vector<cTownperson> creatures;
-	short max_num_monst;
+	long max_num_monst;
 	std::vector<cField> preset_fields;
 	short spec_on_entry,spec_on_entry_if_dead;
 	short spec_on_hostile;
@@ -104,6 +104,7 @@ public:
 	void init_start();
 	void set_up_lights();
 	short light_obscurity(short x,short y); // Obscurity function used for calculating lighting
+	bool is_cleaned_out(long m_killed);
 	
 	explicit cTown(cScenario& scenario);
 	void append(legacy::town_record_type& old);