feature flag keep doors easier in old scenarios

src/game/boe.main.cpp

@@ -128,7 +128,8 @@ std::map<std::string,std::vector<std::string>> feature_flags = {
 	{"store-spell-target", {"fixed"}},
 	{"store-spell-caster", {"fixed"}},
 	// Game balance
-	{"magic-resistance", {"fixed"}} // Resist Magic used to not help with magic damage!
+	{"magic-resistance", {"fixed"}}, // Resist Magic used to not help with magic damage!
+	{"door-town-difficulty", {"fixed"}}
 };
 
 struct cParseEntrance {

src/game/boe.party.cpp

@@ -1385,10 +1385,10 @@ void cast_town_spell(location where) {
 		case eSpell::UNLOCK:
 			// TODO: Is the unlock spell supposed to have a max range?
 			if(univ.scenario.ter_types[ter].special == eTerSpec::UNLOCKABLE){
-				if(univ.scenario.ter_types[ter].flag2 == 10)
+				if(univ.scenario.ter_types[ter].flag2 == 10){
 					r1 = 10000;
-				else{
-					r1 = get_ran(1,1,100) - 5 * adj + 5 * univ.town->difficulty;
+				}else{
+					r1 = get_ran(1,1,100) - 5 * adj + 5 * univ.town.door_diff_adjust();
 					r1 += univ.scenario.ter_types[ter].flag2 * 7;
 				}
 				if(r1 < (135 - combat_percent[min(19,level)])) {

src/game/boe.town.cpp

@@ -1143,7 +1143,7 @@ void pick_lock(location where,short pc_num) {
 	if(r1 < 75)
 		will_break = true;
 	
-	r1 = get_ran(1,1,100) - 5 * univ.party[pc_num].stat_adj(eSkill::DEXTERITY) + univ.town->difficulty * 7
+	r1 = get_ran(1,1,100) - 5 * univ.party[pc_num].stat_adj(eSkill::DEXTERITY) + univ.town.door_diff_adjust() * 7
 		- 5 * univ.party[pc_num].skill(eSkill::LOCKPICKING) - which_item->abil_strength * 7;
 	
 	// Nimble?
@@ -1176,7 +1176,7 @@ void bash_door(location where,short pc_num) {
 	short r1,unlock_adjust;
 	
 	terrain = univ.town->terrain(where.x,where.y);
-	r1 = get_ran(1,1,100) - 15 * univ.party[pc_num].stat_adj(eSkill::STRENGTH) + univ.town->difficulty * 4;
+	r1 = get_ran(1,1,100) - 15 * univ.party[pc_num].stat_adj(eSkill::STRENGTH) + univ.town.door_diff_adjust() * 4;
 	
 	if(univ.scenario.ter_types[terrain].special != eTerSpec::UNLOCKABLE) {
 		add_string_to_buf("  Wrong terrain type.");

src/scenedit/scen.core.cpp

@@ -3344,6 +3344,8 @@ bool build_scenario() {
 	scenario.feature_flags = {
 		{"scenario-meta-format", "V2"},
 		{"resurrection-balm", "required"},
+		// Town difficulty, due to a bug, used to not be added to door difficulty
+		{"door-town-difficulty", "fixed"}
 	};
 
 	fs::path basePath = progDir/"Blades of Exile Base"/(grass ? "bladbase.boes" : "cavebase.boes");

src/universe/universe.cpp

@@ -116,6 +116,10 @@ const cTown& cCurTown::operator * () const {
 	return *record();
 }
 
+int cCurTown::door_diff_adjust() {
+	return univ.scenario.has_feature_flag("door-town-difficulty") ? arena->difficulty : 0;
+}
+
 void cCurTown::place_preset_fields() {
 	// Initialize barriers, etc. Note non-sfx gets forgotten if this is a town recently visited.
 	fields.resize(record()->max_dim, record()->max_dim);

src/universe/universe.hpp

@@ -52,6 +52,7 @@ public:
 	void import_legacy(unsigned char(& old_sfx)[64][64], unsigned char(& old_misc_i)[64][64]);
 	void import_legacy(legacy::big_tr_type& old);
 	
+	int door_diff_adjust();
 	cTown* operator -> ();
 	cTown& operator * ();
 	const cTown* operator -> () const;