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

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

#include "dvars.hpp"

#include "game/game.hpp"
#include "game/dvars.hpp"

#include <utils/nt.hpp>
#include <utils/hook.hpp>
#include <utils/flags.hpp>

namespace gameplay
{
	namespace
	{
		game::dvar_t* jump_slowDownEnable;
		game::dvar_t* jump_enableFallDamage;

		void jump_apply_slowdown_stub(game::mp::playerState_s* ps)
		{
			if (jump_slowDownEnable->current.enabled)
			{
				utils::hook::invoke<void>(0x1401D5360, ps);
			}
		}

		void pm_crashland_stub(game::mp::playerState_s* ps, void* pml)
		{
			if (jump_enableFallDamage->current.enabled)
			{
				utils::hook::invoke<void>(0x1401E2D00, ps, pml);
			}
		}
	}

	class component final : public component_interface
	{
	public:
		void post_unpack() override
		{
			if (game::environment::is_sp())
			{
				return;
			}

			utils::hook::call(0x1401E8830, jump_apply_slowdown_stub);
			jump_slowDownEnable = dvars::register_bool("jump_slowDownEnable", true, game::DVAR_FLAG_REPLICATED, "Slow player movement after jumping");

			utils::hook::call(0x1401E490F, pm_crashland_stub);
			jump_enableFallDamage = dvars::register_bool("jump_enableFallDamage", true, game::DVAR_FLAG_REPLICATED, "Enable fall damage");
		}
	};
}

REGISTER_COMPONENT(gameplay::component)