Add session browser (#633)

src/services/matchmaking/matchmaking_service.cpp

@@ -0,0 +1,108 @@
+#include "matchmaking_service.hpp"
+#include "script.hpp"
+#include "pointers.hpp"
+#include "hooking.hpp"
+#include <network/Network.hpp>
+
+namespace big
+{
+	matchmaking_service::matchmaking_service()
+	{
+		g_matchmaking_service = this;
+	}
+
+	matchmaking_service::~matchmaking_service()
+	{
+		g_matchmaking_service = nullptr;
+	}
+
+	bool matchmaking_service::matchmake(std::optional<int> constraint)
+	{
+		for (auto& session : m_found_sessions)
+		{
+			session.is_valid = true;
+		}
+
+		NetworkGameFilterMatchmakingComponent component{};
+		strcpy(component.m_filter_name, "Group");
+		component.m_game_mode = 0;
+		component.m_num_parameters = 0;
+
+		if (g->session_browser.region_filter_enabled)
+		{
+			component.SetParameter("MMATTR_REGION", 0, g->session_browser.region_filter);
+		}
+
+		if (constraint)
+		{
+			component.SetParameter("MMATTR_DISCRIMINATOR", 1, constraint.value());
+		}
+
+		int state = 0;
+		static rage::rlSessionInfo result_sessions[MAX_SESSIONS_TO_FIND];
+
+		m_active = true;
+		
+		if (g_hooking->get_original<hooks::start_matchmaking_find_sessions>()(0, 1, &component, MAX_SESSIONS_TO_FIND, result_sessions, &m_num_sessions_found, &state))
+		{
+			while (state == 1)
+				script::get_current()->yield();
+
+			if (state == 3)
+			{
+				for (int i = 0; i < m_num_sessions_found; i++)
+				{
+					m_found_sessions[i].info = result_sessions[i];
+
+					if (constraint && m_found_sessions[i].attributes.player_count >= 30)
+						m_found_sessions[i].is_valid = false;
+
+					if (g->session_browser.language_filter_enabled && m_found_sessions[i].attributes.language != g->session_browser.language_filter)
+						m_found_sessions[i].is_valid = false;
+
+					if (g->session_browser.player_count_filter_enabled && (m_found_sessions[i].attributes.player_count < g->session_browser.player_count_filter_minimum ||
+						m_found_sessions[i].attributes.player_count > g->session_browser.player_count_filter_maximum))
+					{
+						m_found_sessions[i].is_valid = false;
+					}
+				}
+
+				if (g->session_browser.sort_method != 0)
+				{
+					std::qsort(m_found_sessions, m_num_sessions_found, sizeof(session), [](const void* a1, const void* a2) -> int
+					{
+						std::strong_ordering result;
+
+						if (g->session_browser.sort_method == 1)
+						{
+							result = (((session*)(a1))->attributes.player_count <=> ((session*)(a2))->attributes.player_count);
+						}
+
+						if (result == 0)
+							return 0;
+
+						if (result > 0)
+							return g->session_browser.sort_direction ? -1 : 1;
+
+						if (result < 0)
+							return g->session_browser.sort_direction ? 1 : -1;
+
+
+						std::unreachable();
+					});
+				}
+
+				m_active = false;
+				return true;
+			}
+		}
+		else
+		{
+			m_active = false;
+			return false;
+		}
+
+		m_active = false;
+		return false;
+	}
+}