h1-mod/src/client/component/dvars.cpp

#include <std_include.hpp>
#include "loader/component_loader.hpp"
#include "dvars.hpp"

#include "game/game.hpp"

#include <utils/hook.hpp>

namespace dvars
{
	struct dvar_base
	{
		unsigned int flags{};
	};

	struct dvar_bool : dvar_base
	{
		bool value{};
	};

	struct dvar_float : dvar_base
	{
		float value{};
		float min{};
		float max{};
	};

	struct dvar_vector2 : dvar_base
	{
		float x{};
		float y{};
		float min{};
		float max{};
	};

	struct dvar_vector3 : dvar_base
	{

		float x{};
		float y{};
		float z{};
		float min{};
		float max{};
	};

	struct dvar_int : dvar_base
	{
		int value{};
		int min{};
		int max{};
	};

	struct dvar_string : dvar_base
	{
		std::string value{};
	};

	namespace
	{
		template <typename T>
		T* find_dvar(std::unordered_map<std::string, T>& map, const std::string& name)
		{
			auto i = map.find(name);
			if (i != map.end())
			{
				return &i->second;
			}

			return nullptr;
		}

		template <typename T>
		T* find_dvar(std::unordered_map<std::string, T>& map, const int hash)
		{
			for (auto i = map.begin(); i != map.end(); ++i)
			{
				if (game::generateHashValue(i->first.data()) == hash)
				{
					return &i->second;
				}
			}

			return nullptr;
		}

		bool find_dvar(std::unordered_set<std::string>& set, const std::string& name)
		{
			return set.find(name) != set.end();
		}


		bool find_dvar(std::unordered_set<std::string>& set, const int hash)
		{
			for (auto i = set.begin(); i != set.end(); ++i)
			{
				if (game::generateHashValue(i->data()) == hash)
				{
					return true;
				}
			}

			return false;
		}
	}

	namespace disable
	{
		static std::unordered_set<std::string> set_bool_disables;
		static std::unordered_set<std::string> set_float_disables;
		static std::unordered_set<std::string> set_int_disables;
		static std::unordered_set<std::string> set_string_disables;

		void set_bool(const std::string& name)
		{
			set_bool_disables.emplace(name);
		}

		void set_float(const std::string& name)
		{
			set_float_disables.emplace(name);
		}

		void set_int(const std::string& name)
		{
			set_int_disables.emplace(name);
		}

		void set_string(const std::string& name)
		{
			set_string_disables.emplace(name);
		}
	}

	namespace override
	{
		static std::unordered_map<std::string, dvar_bool> register_bool_overrides;
		static std::unordered_map<std::string, dvar_float> register_float_overrides;
		static std::unordered_map<std::string, dvar_int> register_int_overrides;
		static std::unordered_map<std::string, dvar_string> register_string_overrides;
		static std::unordered_map<std::string, dvar_vector2> register_vector2_overrides;
		static std::unordered_map<std::string, dvar_vector3> register_vector3_overrides;

		static std::unordered_map<std::string, bool> set_bool_overrides;
		static std::unordered_map<std::string, float> set_float_overrides;
		static std::unordered_map<std::string, int> set_int_overrides;
		static std::unordered_map<std::string, std::string> set_string_overrides;

		void register_bool(const std::string& name, const bool value, const unsigned int flags)
		{
			dvar_bool values;
			values.value = value;
			values.flags = flags;
			register_bool_overrides[name] = std::move(values);
		}

		void register_float(const std::string& name, const float value, const float min, const float max, 
			const unsigned int flags)
		{
			dvar_float values;
			values.value = value;
			values.min = min;
			values.max = max;
			values.flags = flags;
			register_float_overrides[name] = std::move(values);
		}

		void register_int(const std::string& name, const int value, const int min, const int max, 
			const unsigned int flags)
		{
			dvar_int values;
			values.value = value;
			values.min = min;
			values.max = max;
			values.flags = flags;
			register_int_overrides[name] = std::move(values);
		}

		void register_string(const std::string& name, const std::string& value, 
			const unsigned int flags)
		{
			dvar_string values;
			values.value = value;
			values.flags = flags;
			register_string_overrides[name] = std::move(values);
		}

		void register_vec2(const std::string& name, float x, float y, float min, float max, 
			const unsigned int flags)
		{
			dvar_vector2 values;
			values.x = x;
			values.y = y;
			values.min = min;
			values.max = max;
			values.flags = flags;
			register_vector2_overrides[name] = std::move(values);
		}

		void register_vec3(const std::string& name, float x, float y, float z, float min, 
			float max, const unsigned int flags)
		{
			dvar_vector3 values;
			values.x = x;
			values.y = y;
			values.z = z;
			values.min = min;
			values.max = max;
			values.flags = flags;
			register_vector3_overrides[name] = std::move(values);
		}

		void set_bool(const std::string& name, const bool value)
		{
			set_bool_overrides[name] = value;
		}

		void set_float(const std::string& name, const float value)
		{
			set_float_overrides[name] = value;
		}

		void set_int(const std::string& name, const int value)
		{
			set_int_overrides[name] = value;
		}

		void set_string(const std::string& name, const std::string& value)
		{
			set_string_overrides[name] = value;
		}
	}

	utils::hook::detour dvar_register_bool_hook;
	utils::hook::detour dvar_register_float_hook;
	utils::hook::detour dvar_register_int_hook;
	utils::hook::detour dvar_register_string_hook;
	utils::hook::detour dvar_register_vector2_hook;
	utils::hook::detour dvar_register_vector3_hook;

	utils::hook::detour dvar_set_bool_hook;
	utils::hook::detour dvar_set_float_hook;
	utils::hook::detour dvar_set_int_hook;
	utils::hook::detour dvar_set_string_hook;

	game::dvar_t* dvar_register_bool(const int hash, const char* name, bool value, unsigned int flags)
	{
		auto* var = find_dvar(override::register_bool_overrides, hash);
		if (var)
		{
			value = var->value;
			flags = var->flags;
		}

		return dvar_register_bool_hook.invoke<game::dvar_t*>(hash, name, value, flags);
	}

	game::dvar_t* dvar_register_float(const int hash, const char* name, float value, float min, float max, unsigned int flags)
	{
		auto* var = find_dvar(override::register_float_overrides, hash);
		if (var)
		{
			value = var->value;
			min = var->min;
			max = var->max;
			flags = var->flags;
		}

		return dvar_register_float_hook.invoke<game::dvar_t*>(hash, name, value, min, max, flags);
	}

	game::dvar_t* dvar_register_int(const int hash, const char* name, int value, int min, int max, unsigned int flags)
	{
		auto* var = find_dvar(override::register_int_overrides, hash);
		if (var)
		{
			value = var->value;
			min = var->min;
			max = var->max;
			flags = var->flags;
		}

		return dvar_register_int_hook.invoke<game::dvar_t*>(hash, name, value, min, max, flags);
	}

	game::dvar_t* dvar_register_string(const int hash, const char* name, const char* value, unsigned int flags)
	{
		auto* var = find_dvar(override::register_string_overrides, hash);
		if (var)
		{
			value = var->value.data();
			flags = var->flags;
		}

		return dvar_register_string_hook.invoke<game::dvar_t*>(hash, name, value, flags);
	}

	game::dvar_t* dvar_register_vector2(const int hash, const char* name, float x, float y, float min, float max,
		                                unsigned int flags)
	{
		auto* var = find_dvar(override::register_vector2_overrides, hash);
		if (var)
		{
			x = var->x;
			y = var->y;
			min = var->min;
			max = var->max;
			flags = var->flags;
		}

		return dvar_register_vector2_hook.invoke<game::dvar_t*>(hash, name, x, y, min, max, flags);
	}

	game::dvar_t* dvar_register_vector3(const int hash, const char* name, float x, float y, float z, float min,
		                                float max, unsigned int flags)
	{
		auto* var = find_dvar(override::register_vector3_overrides, hash);
		if (var)
		{
			x = var->x;
			y = var->y;
			z = var->z;
			min = var->min;
			max = var->max;
			flags = var->flags;
		}

		return dvar_register_vector3_hook.invoke<game::dvar_t*>(hash, name, x, y, z, min, max, flags);
	}

	void dvar_set_bool(game::dvar_t* dvar, bool boolean)
	{
		const auto disabled = find_dvar(disable::set_bool_disables, dvar->hash);
		if (disabled)
		{
			return;
		}

		auto* var = find_dvar(override::set_bool_overrides, dvar->hash);
		if (var)
		{
			boolean = *var;
		}

		return dvar_set_bool_hook.invoke<void>(dvar, boolean);
	}

	void dvar_set_float(game::dvar_t* dvar, float fl)
	{
		const auto disabled = find_dvar(disable::set_float_disables, dvar->hash);
		if (disabled)
		{
			return;
		}

		auto* var = find_dvar(override::set_float_overrides, dvar->hash);
		if (var)
		{
			fl = *var;
		}

		return dvar_set_float_hook.invoke<void>(dvar, fl);
	}

	void dvar_set_int(game::dvar_t* dvar, int integer)
	{
		const auto disabled = find_dvar(disable::set_int_disables, dvar->hash);
		if (disabled)
		{
			return;
		}

		auto* var = find_dvar(override::set_int_overrides, dvar->hash);
		if (var)
		{
			integer = *var;
		}

		return dvar_set_int_hook.invoke<void>(dvar, integer);
	}

	void dvar_set_string(game::dvar_t* dvar, const char* string)
	{
		const auto disabled = find_dvar(disable::set_string_disables, dvar->hash);
		if (disabled)
		{
			return;
		}

		auto* var = find_dvar(override::set_string_overrides, dvar->hash);
		if (var)
		{
			string = var->data();
		}

		return dvar_set_string_hook.invoke<void>(dvar, string);
	}

	class component final : public component_interface
	{
	public:
		void post_unpack() override
		{
			dvar_register_bool_hook.create(SELECT_VALUE(0x1403C47E0, 0x1404FA540), &dvar_register_bool);
			dvar_register_float_hook.create(SELECT_VALUE(0x1403C4BB0, 0x1404FA910), &dvar_register_float);
			dvar_register_int_hook.create(SELECT_VALUE(0x1403C4CC0, 0x1404FAA20), &dvar_register_int);
			dvar_register_string_hook.create(SELECT_VALUE(0x1403C4DA0, 0x1404FAB00), &dvar_register_string);
			dvar_register_vector2_hook.create(SELECT_VALUE(0x1403C4E80, 0x1404FABE0), &dvar_register_vector2);
			dvar_register_vector3_hook.create(SELECT_VALUE(0x1403C4FC0, 0x1404FACE0), &dvar_register_vector3);

			dvar_set_bool_hook.create(SELECT_VALUE(0x1403C7020, 0x1404FCDF0), &dvar_set_bool);
			dvar_set_float_hook.create(SELECT_VALUE(0x1403C7420, 0x1404FD360), &dvar_set_float);
			dvar_set_int_hook.create(SELECT_VALUE(0x1403C76C0, 0x1404FD5E0), &dvar_set_int);
			dvar_set_string_hook.create(SELECT_VALUE(0x1403C7900, 0x1404FD8D0), &dvar_set_string);
		}
	};
}

REGISTER_COMPONENT(dvars::component)