Method LoadPack

olcPixelGameEngine.h:2323–2367

	}

	bool ResourcePack::LoadPack(const std::string& sFile, const std::string& sKey)
	{
		// Open the resource file
		baseFile.open(sFile, std::ifstream::binary);
		if (!baseFile.is_open()) return false;

		// 1) Read Scrambled index
		uint32_t nIndexSize = 0;
		baseFile.read((char*)&nIndexSize, sizeof(uint32_t));

		std::vector<char> buffer(nIndexSize);
		for (uint32_t j = 0; j < nIndexSize; j++)
			buffer[j] = baseFile.get();

		std::vector<char> decoded = scramble(buffer, sKey);
		size_t pos = 0;
		auto read = [&decoded, &pos](char* dst, size_t size) {
			memcpy((void*)dst, (const void*)(decoded.data() + pos), size);
			pos += size;
			};

		auto get = [&read]() -> int { char c; read(&c, 1); return c; };

		// 2) Read Map
		uint32_t nMapEntries = 0;
		read((char*)&nMapEntries, sizeof(uint32_t));
		for (uint32_t i = 0; i < nMapEntries; i++)
		{
			uint32_t nFilePathSize = 0;
			read((char*)&nFilePathSize, sizeof(uint32_t));

			std::string sFileName(nFilePathSize, ' ');
			for (uint32_t j = 0; j < nFilePathSize; j++)
				sFileName[j] = get();

			sResourceFile e;
			read((char*)&e.nSize, sizeof(uint32_t));
			read((char*)&e.nOffset, sizeof(uint32_t));
			mapFiles[sFileName] = e;
		}

		// Don't close base file! we will provide a stream
		// pointer when the file is requested
		return true;
	}

	bool ResourcePack::SavePack(const std::string& sFile, const std::string& sKey)
	{