feat: Help Command Pagination

dGame/dUtilities/SlashCommandHandler.cpp

@@ -75,30 +75,52 @@ void SlashCommandHandler::HandleChatCommand(const std::u16string& chat, Entity*
 
 void GMZeroCommands::Help(Entity* entity, const SystemAddress& sysAddr, const std::string args) {
 	std::ostringstream feedback;
-	if (args.empty()) {
-		feedback << "----- Commands -----";
-		for (const auto& [alias, command] : CommandInfos) {
-			// TODO: Limit displaying commands based on GM level they require
-			if (command.requiredLevel > entity->GetGMLevel()) continue;
-			LOG("Help command: %s", alias.c_str());
-			feedback << "\n/" << alias << ": " << command.help;
-		}
-	} else {
-		auto it = CommandInfos.find(args);
-		if (it != CommandInfos.end() && entity->GetGMLevel() >= it->second.requiredLevel) {
-			feedback << "----- " << args << " -----\n";
-			feedback << it->second.info;
-			if (it->second.aliases.size() > 1) {
-				feedback << "\nAliases: ";
-				for (size_t i = 0; i < it->second.aliases.size(); i++) {
-					if (i > 0) feedback << ", ";
-					feedback << it->second.aliases[i];
-				}
-			}
-		} else if (entity->GetGMLevel() > eGameMasterLevel::CIVILIAN) {
-			feedback << "Command " << std::quoted(args) << " does not exist!";
+	constexpr size_t pageSize = 10; // Number of commands per page
+
+	// Filter CommandInfos based on player's GM level
+	std::vector<std::pair<std::string, Command>> accessibleCommands;
+	std::copy_if(CommandInfos.begin(), CommandInfos.end(), std::back_inserter(accessibleCommands),
+		[&](const auto& pair) {
+			return pair.second.requiredLevel <= entity->GetGMLevel();
+		});
+
+	// Calculate total number of pages based on accessible commands
+	size_t totalPages = (accessibleCommands.size() + pageSize - 1) / pageSize;
+
+	size_t page = 1; // Default to first page
+
+	// Check if page number is provided
+	if (!args.empty()) {
+		std::optional<int> parsedPage = GeneralUtils::TryParse<int>(args);
+		if (parsedPage.has_value()) {
+			page = *parsedPage;
+		} else {
+			feedback << "Invalid page number.";
+			GameMessages::SendSlashCommandFeedbackText(entity, GeneralUtils::ASCIIToUTF16(feedback.str()));
+			return;
 		}
 	}
+
+	// Check if requested page number is valid
+	if (page < 1 || page > totalPages) {
+		feedback << "Invalid page number. Total pages: " << totalPages;
+		GameMessages::SendSlashCommandFeedbackText(entity, GeneralUtils::ASCIIToUTF16(feedback.str()));
+		return;
+	}
+
+	// Calculate starting and ending index for commands on the current page
+	size_t startIdx = (page - 1) * pageSize;
+	size_t endIdx = std::min(startIdx + pageSize, accessibleCommands.size());
+
+	// Display commands for the current page
+	feedback << "----- Commands (Page " << page << ") -----";
+	for (size_t i = startIdx; i < endIdx; ++i) {
+		const auto& [alias, command] = accessibleCommands[i];
+		LOG("Help command: %s", alias.c_str());
+		feedback << "\n/" << alias << ": " << command.help;
+	}
+
+	// Send feedback text
 	const auto feedbackStr = feedback.str();
 	if (!feedbackStr.empty()) GameMessages::SendSlashCommandFeedbackText(entity, GeneralUtils::ASCIIToUTF16(feedbackStr));
 }
@@ -119,11 +141,7 @@ void SlashCommandHandler::SendAnnouncement(const std::string& title, const std::
 	for (auto character : title) {
 		bitStream.Write<char>(character);
 	}
-
 	bitStream.Write<uint32_t>(message.size());
-	for (auto character : message) {
-		bitStream.Write<char>(character);
-	}
 
 	Game::chatServer->Send(&bitStream, SYSTEM_PRIORITY, RELIABLE, 0, Game::chatSysAddr, false);
 }