iw4x-client/src/Components/Modules/Branding.cpp

#include <STDInclude.hpp>

namespace Components
{
	Dvar::Var Branding::CGDrawVersion;
	Dvar::Var Branding::CGDrawVersionX;
	Dvar::Var Branding::CGDrawVersionY;
	Game::dvar_t** Branding::Version = reinterpret_cast<Game::dvar_t**>(0x1AD7930);

	void Branding::CG_DrawVersion()
	{
		// Default values
		constexpr auto fontScale = 0.25f;
		constexpr auto maxChars = std::numeric_limits<int>::max();
		// Default colours
		constexpr Game::vec4_t shadowColor = {0.0f, 0.0f, 0.0f, 0.7f};
		constexpr Game::vec4_t color = {0.4f, 0.7f, 1.0f, 0.7f};

		auto* const placement = Game::ScrPlace_GetUnsafeFullPlacement();
		auto* const font = Game::UI_GetFontHandle(placement, 0, 0.5f);

		const auto width = Game::UI_TextWidth((*Version)->current.string, 0, font, fontScale);
		const auto height = Game::UI_TextHeight(font, fontScale);

		Game::UI_DrawText(placement, (*Version)->current.string, maxChars, font, 1.0f - (CGDrawVersionX.get<float>() + width),
			1.0f - (CGDrawVersionY.get<float>() + height), 3, 3, fontScale, shadowColor, 0);
		Game::UI_DrawText(placement, (*Version)->current.string, maxChars, font, (0.0f - width) - CGDrawVersionX.get<float>(),
			(0.0f - height) - CGDrawVersionY.get<float>(), 3, 3, fontScale, color, 0);
	}

	void Branding::CG_DrawVersion_Hk(int localClientNum)
	{
		Utils::Hook::Call<void(int)>(0x4EFF80)(localClientNum);

		if (Branding::CGDrawVersion.get<bool>())
		{
			Branding::CG_DrawVersion();
		}
	}

	const char* Branding::GetBuildNumber()
	{
		static char buf[128]; // Length the game uses

		const auto* data = "latest " __DATE__ " " __TIME__;
		sprintf_s(buf, "%s %s", SHORTVERSION, data);

		return buf;
	}

	const char* Branding::GetVersionString()
	{
#ifdef _DEBUG
		const auto* buildType = "IW4x_DEV MP";
#else
		const auto* buildType = "IW4x MP";
#endif

		// IW4x is technically a beta
		const auto* result = Utils::String::VA("%s %s build %s %s",
			buildType, "(Beta)", Branding::GetBuildNumber(), reinterpret_cast<const char*>(0x7170A0));

		return result;
	}

	void Branding::Dvar_SetVersionString(const Game::dvar_t* dvar, const char* /*value*/)
	{
		const auto* result = Branding::GetVersionString();
		Utils::Hook::Call<void(const Game::dvar_t*, const char*)>(0x4A9580)(dvar, result);
	}

	// Branding this might be a good idea in case this LSP logging ever gets turned on for some reason
	void Branding::MSG_WriteVersionStringHeader(Game::msg_t* msg, const char* /*string*/)
	{
		const auto* result = Branding::GetVersionString();
		Utils::Hook::Call<void(Game::msg_t*, const char*)>(0x463820)(msg, result);
	}

	Game::dvar_t* Branding::Dvar_RegisterUIBuildLocation(const char* dvarName,
		float /*x*/, float /*y*/, float min, float max, int /*flags*/, const char* description)
	{
#ifdef _DEBUG
		constexpr auto flag = Game::dvar_flag::DVAR_NONE;
#else
		constexpr auto flag = Game::dvar_flag::DVAR_READONLY;
#endif
		return Game::Dvar_RegisterVec2(dvarName, -60.0f, 474.0f, min, max, flag, description);
	}

	void Branding::RegisterBrandingDvars()
	{
#ifdef _DEBUG
		constexpr auto value = true;
#else
		constexpr auto value = false;
#endif
		Branding::CGDrawVersion = Dvar::Register<bool>("cg_drawVersion", value,
			Game::dvar_flag::DVAR_NONE, "Draw the game version");
		Branding::CGDrawVersionX = Dvar::Register<float>("cg_drawVersionX", 50.0f,
			0.0f, 512.0f, Game::dvar_flag::DVAR_NONE, "X offset for the version string");
		Branding::CGDrawVersionY = Dvar::Register<float>("cg_drawVersionY", 18.0f,
			0.0f, 512.0f, Game::dvar_flag::DVAR_NONE, "Y offset for the version string");
	}

	Branding::Branding()
	{
		Dvar::OnInit(Branding::RegisterBrandingDvars);

		// UI version string
		Utils::Hook::Set<const char*>(0x43F73B, "IW4x: " VERSION);

		// Short version dvar
		Utils::Hook::Set<const char*>(0x60BD91, SHORTVERSION);

		Utils::Hook(0x4B12B0, Branding::GetBuildNumber, HOOK_JUMP).install()->quick();

		// Version string color
		static Game::vec4_t buildLocColor = {1.0f, 1.0f, 1.0f, 0.8f};
		Utils::Hook::Set<float*>(0x43F710, buildLocColor);

		// Place ui version string to bottom right corner (ui_buildlocation)
		Utils::Hook(0x6310A0, Branding::Dvar_RegisterUIBuildLocation, HOOK_CALL).install()->quick(); // Dvar_RegisterVec2

		Utils::Hook(0x60BD81, Branding::Dvar_SetVersionString, HOOK_CALL).install()->quick();

		Utils::Hook(0x4DA842, Branding::MSG_WriteVersionStringHeader, HOOK_CALL).install()->quick();

		// Hook CG_DrawFullScreenDebugOverlays so we may render the version when it's appropriate
		Utils::Hook(0x5AC975, Branding::CG_DrawVersion_Hk, HOOK_CALL).install()->quick();
	}
}