Use proper session flag checks (#1734)

dDatabase/CDClientDatabase/CDClientTables/CDPlayerFlagsTable.cpp

@@ -0,0 +1,38 @@
+#include "CDPlayerFlagsTable.h"
+
+#include "CDClientDatabase.h"
+
+namespace CDPlayerFlagsTable {
+	Table entries;
+
+	void ReadEntry(CppSQLite3Query& table) {
+		Entry entry;
+		entry.sessionOnly = table.getIntField("SessionOnly") == 1;
+		entry.onlySetByServer = table.getIntField("OnlySetByServer") == 1;
+		entry.sessionZoneOnly = table.getIntField("SessionZoneOnly") == 1;
+		entries[table.getIntField("id")] = entry;
+	}
+
+	void LoadValuesFromDatabase() {
+		auto table = CDClientDatabase::ExecuteQuery("SELECT * FROM PlayerFlags;");
+
+		if (!table.eof()) {
+			do {
+				ReadEntry(table);
+			} while (!table.nextRow());
+		}
+	}
+
+	const std::optional<Entry> GetEntry(const FlagId flagId) {
+		if (!entries.contains(flagId)) {
+			auto table = CDClientDatabase::CreatePreppedStmt("SELECT * FROM PlayerFlags WHERE id = ?;");
+			table.bind(1, static_cast<int>(flagId));
+			auto result = table.execQuery();
+			if (!result.eof()) {
+				ReadEntry(result);
+			}
+		}
+
+		return entries[flagId];
+	}
+}