Create bots.cpp

src/component/bots.cpp

@@ -0,0 +1,102 @@
+#include <stdinc.hpp>
+#include "loader/component_loader.hpp"
+
+#include "gsc.hpp"
+
+#include <json.hpp>
+#include <utils/io.hpp>
+#include <utils/hook.hpp>
+
+namespace bots
+{
+	namespace
+	{
+		typedef std::pair<std::string, std::string> bot_entry;
+
+		std::vector<bot_entry> bot_names;
+		utils::hook::detour sv_bot_name_random_hook;
+
+		// Json file is expected to contain one "names" object and that should contain a string (key)
+		// for the bot's name and one string (value) for the clantag
+		void load_bot_data()
+		{
+			if (!utils::io::file_exists("bots/bots.json"))
+			{
+				printf("bots.json was not found\n");
+				return;
+			}
+
+			nlohmann::json obj;
+			try
+			{
+				obj = nlohmann::json::parse(utils::io::read_file("bots/bots.json").data());
+			}
+			catch (const nlohmann::json::parse_error& ex)
+			{
+				printf("%s\n", ex.what());
+				return;
+			}
+
+			for (const auto& [key, val] : obj["names"].items())
+			{
+				if (val.is_string())
+				{
+					bot_names.emplace_back(std::make_pair(key, val.get<std::string>()));
+				}
+			}
+		}
+
+		// If the list contains at least 18 names there should not be any collisions
+		const char* sv_bot_name_random_stub()
+		{
+			if (bot_names.empty())
+			{
+				load_bot_data();
+			}
+
+			static size_t bot_id = 0;
+			if (!bot_names.empty())
+			{
+				bot_id %= bot_names.size();
+				const auto& entry = bot_names.at(bot_id++);
+				return entry.first.data();
+			}
+
+			return sv_bot_name_random_hook.invoke<const char*>();
+		}
+
+		int build_connect_string(char* buf, const char* connect_string, const char* name, const char* xuid,
+			const char* xnaddr, int protocol, int netfield, int session_mode, int port)
+		{
+			// Default
+			auto clantag = "3arc"s;
+			for (const auto& entry : bot_names)
+			{
+				if (entry.first == name)
+				{
+					clantag = entry.second;
+					break;
+				}
+			}
+
+			return _snprintf_s(buf, 0x400, _TRUNCATE, connect_string, name,
+				clantag.data(), xuid, xnaddr, protocol, netfield, session_mode, port);
+		}
+	}
+
+	class component final : public component_interface
+	{
+	public:
+		void post_unpack() override
+		{
+			// Add custom clantag
+			utils::hook::set<const char*>(0x6B6294, "connect \"\\cg_predictItems\\1\\cl_punkbuster\\0\\cl_anonymous\\0\\color\\4\\head\\default\\model\\multi\\snaps\\20\\rate\\5000\\name\\%s\\clanAbbrev\\3arc\\bdOnlineUserID\\%s\\protocol\\%d\\qport\\%d\"");
+
+			sv_bot_name_random_hook.create(0x49ED80, &sv_bot_name_random_stub);
+			utils::hook::call(0x6B6299, build_connect_string);
+		}
+
+	};
+}
+
+REGISTER_COMPONENT(bots::component)