From a55f5874af414648c98b437cdb9e13a1bb6b5c5b Mon Sep 17 00:00:00 2001
From: m <mjkzyalt@gmail.com>
Date: Sat, 25 Jan 2025 20:54:59 -0600
Subject: [PATCH] map ents patch

---
 src/client/component/mapents.cpp | 212 +++++++++++++++++++++++++++++++
 1 file changed, 212 insertions(+)
 create mode 100644 src/client/component/mapents.cpp

diff --git a/src/client/component/mapents.cpp b/src/client/component/mapents.cpp
new file mode 100644
index 0000000..498b92f
--- /dev/null
+++ b/src/client/component/mapents.cpp
@@ -0,0 +1,212 @@
+#include <std_include.hpp>
+#include "loader/component_loader.hpp"
+
+#include "game/game.hpp"
+#include "console.hpp"
+#include "filesystem.hpp"
+
+#include <utils/hook.hpp>
+#include <utils/string.hpp>
+
+#include "gsc/script_loading.hpp"
+
+namespace mapents
+{
+	namespace
+	{
+		std::optional<std::string> parse_mapents(const std::string& source)
+		{
+			std::string out_buffer{};
+
+			const auto lines = utils::string::split(source, '\n');
+			auto in_map_ent = false;
+			auto empty = false;
+			auto in_comment = false;
+
+			for (auto i = 0; i < lines.size(); i++)
+			{
+				auto line_num = i+1;
+				auto line = lines[i];
+				if (line.ends_with('\r'))
+				{
+					line.pop_back();
+				}
+
+				if (line.starts_with("/*"))
+				{
+					in_comment = true;
+					continue;
+				}
+
+				if (line.ends_with("*/"))
+				{
+					in_comment = false;
+					continue;
+				}
+
+				if (in_comment)
+				{
+					continue;
+				}
+
+				if (line.starts_with("//"))
+				{
+					continue;
+				}
+
+				if (line[0] == '{' && !in_map_ent)
+				{
+					in_map_ent = true;
+					out_buffer.append("{\n");
+					continue;
+				}
+
+				if (line[0] == '{' && in_map_ent)
+				{
+					console::error("[map_ents parser] Unexpected '{' on line %i\n", line_num);
+					return {};
+				}
+
+				if (line[0] == '}' && in_map_ent)
+				{
+					if (empty)
+					{
+						out_buffer.append("\n}\n");
+					}
+					else if (i < static_cast<int>(lines.size()) - 1)
+					{
+						out_buffer.append("}\n");
+					}
+					else
+					{
+						out_buffer.append("}\0");
+					}
+
+					in_map_ent = false;
+					continue;
+				}
+
+				if (line[0] == '}' && !in_map_ent)
+				{
+					console::error("[map_ents parser] Unexpected '}' on line %i\n", line_num);
+					return {};
+				}
+
+				std::regex expr(R"~((.+) "(.*)")~");
+				std::smatch match{};
+				if (!std::regex_search(line, match, expr) && !line.empty())
+				{
+					console::warn("[map_ents parser] Failed to parse line %i (%s)\n", line_num, line.data());
+					continue;
+				}
+
+				auto key = utils::string::to_lower(match[1].str());
+				const auto value = match[2].str();
+
+				if (key.size() <= 0)
+				{
+					console::warn("[map_ents parser] Invalid key ('%s') on line %i (%s)\n", key.data(), line_num, line.data());
+					continue;
+				}
+
+				if (value.size() <= 0)
+				{
+					continue;
+				}
+
+				empty = false;
+
+				if (utils::string::is_numeric(key) || key.size() < 3 || !key.starts_with("\"") || !key.ends_with("\""))
+				{
+					out_buffer.append(line);
+					out_buffer.append("\n");
+					continue;
+				}
+
+				const auto key_ = key.substr(1, key.size() - 2);
+				const auto id = gsc::gsc_ctx->token_id(key_);
+				if (id == 0)
+				{
+					console::warn("[map_ents parser] Key '%s' not found, on line %i (%s)\n", key_.data(), line_num, line.data());
+					continue;
+				}
+
+				out_buffer.append(utils::string::va("%i \"%s\"\n", id, value.data()));
+			}
+
+			return {out_buffer};
+		}
+
+		std::string raw_ents;
+		bool load_raw_mapents()
+		{
+			auto mapents_name = utils::string::va("%s.ents", **reinterpret_cast<const char***>(SELECT_VALUE(0x0, 0x1479E6940)));
+			if (filesystem::exists(mapents_name))
+			{
+				try
+				{
+					console::info("Reading raw ents file \"%s\"\n", mapents_name);
+					raw_ents = filesystem::read_file(mapents_name);
+					if (!raw_ents.empty())
+					{
+						return true;
+					}
+				}
+				catch (const std::exception& ex)
+				{
+					console::error("Failed to read raw ents file \"%s\"\n%s\n", mapents_name, ex.what());
+				}
+			}
+			return false;
+		}
+
+		std::string entity_string;
+		const char* cm_entity_string_stub()
+		{
+			const char* ents = nullptr;
+			if (load_raw_mapents())
+			{
+				ents = raw_ents.data();
+			}
+			else
+			{
+				if (!entity_string.empty())
+				{
+					return entity_string.data();
+				}
+
+				ents = utils::hook::invoke<const char*>(SELECT_VALUE(0x0, 0x1403A1F30));
+			}
+
+			const auto parsed = parse_mapents(ents);
+			if (parsed.has_value())
+			{
+				entity_string = parsed.value();
+				return entity_string.data();
+			}
+			else
+			{
+				return ents;
+			}
+		}
+
+		void cm_unload_stub(void* clip_map)
+		{
+			entity_string.clear();
+			raw_ents.clear();
+			utils::hook::invoke<void>(SELECT_VALUE(0x0, 0x1403A1ED0), clip_map);
+		}
+	}
+
+	class component final : public component_interface
+	{
+	public:
+		void post_unpack() override
+		{
+			utils::hook::call(SELECT_VALUE(0x0, 0x1402F5A54), cm_entity_string_stub);
+			utils::hook::call(SELECT_VALUE(0x0, 0x14026BF54), cm_unload_stub);
+		}
+	};
+}
+
+REGISTER_COMPONENT(mapents::component)