Add game events for industry create/destroy

src/industry_cmd.cpp

@@ -186,6 +186,8 @@ Industry::~Industry()
 	for (Station *st : this->stations_near) {
 		st->industries_near.erase(this);
 	}
+
+	if (_game_mode == GM_NORMAL) RegisterGameEvents(GEF_INDUSTRY_DELETE);
 }
 
 /**
@@ -1865,6 +1867,7 @@ static void DoCreateNewIndustry(Industry *i, TileIndex tile, IndustryType type,
 	InvalidateWindowData(WC_INDUSTRY_DIRECTORY, 0, 0);
 
 	if (!_generating_world) PopulateStationsNearby(i);
+	if (_game_mode == GM_NORMAL) RegisterGameEvents(GEF_INDUSTRY_CREATE);
 }
 
 /**

src/openttd.cpp

@@ -1837,5 +1837,7 @@ char *DumpGameEventFlags(GameEventFlags events, char *b, const char *last)
 	dump('t', GEF_TBTR_REPLACEMENT);
 	dump('D', GEF_DISASTER_VEH);
 	dump('c', GEF_TRAIN_CRASH);
+	dump('i', GEF_INDUSTRY_CREATE);
+	dump('j', GEF_INDUSTRY_DELETE);
 	return b;
 }

src/openttd.h

@@ -93,6 +93,8 @@ enum GameEventFlags : uint32 {
 	GEF_TBTR_REPLACEMENT     = 1 << 3, ///< (t) CMD_TEMPLATE_REPLACE_VEHICLE has been called
 	GEF_DISASTER_VEH         = 1 << 4, ///< (D) A disaster vehicle exists or has been created
 	GEF_TRAIN_CRASH          = 1 << 5, ///< (c) A train crash has occurred
+	GEF_INDUSTRY_CREATE      = 1 << 6, ///< (i) An industry has been created (in game)
+	GEF_INDUSTRY_DELETE      = 1 << 7, ///< (j) An industry has been deleted (in game)
 };
 DECLARE_ENUM_AS_BIT_SET(GameEventFlags)