for (int y = 0; y < spr->height; y++) // Thanks maksym33
					free(row_pointers[y]);
				free(row_pointers);
				png_destroy_read_struct(&png, &info, nullptr);
			};

			png = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
			if (!png) goto fail_load;

			info = png_create_info_struct(png);
			if (!info) goto fail_load;

			if (setjmp(png_jmpbuf(png))) goto fail_load;

			if (pack == nullptr)
			{
				FILE* f = fopen(sImageFile.c_str(), "rb");
				if (!f) return olc::rcode::NO_FILE;
				png_init_io(png, f);
				loadPNG();
				fclose(f);
			}
			else
			{
				ResourceBuffer rb = pack->GetFileBuffer(sImageFile);
				std::istream is(&rb);
				png_set_read_fn(png, (png_voidp)&is, pngReadStream);
				loadPNG();
			}

			return olc::rcode::OK;

		fail_load:
			spr->width = 0;
			spr->height = 0;
			spr->pColData = nullptr;
			return olc::rcode::FAIL;
		}

		olc::rcode SaveImageResource(olc::Sprite* spr, const std::string& sImageFile) override
		{
			return olc::rcode::OK;
		}
	};
}
#endif
// O------------------------------------------------------------------------------O
// | END IMAGE LOADER:                                                            |
// O------------------------------------------------------------------------------O




// O------------------------------------------------------------------------------O
// | START IMAGE LOADER: stb_image.h, all systems, very fast                      |
// O------------------------------------------------------------------------------O
// Thanks to Sean Barrett - https://github.com/nothings/stb/blob/master/stb_image.h
// MIT License - Copyright(c) 2017 Sean Barrett

// Note you need to download the above file into your project folder, and
// #define OLC_IMAGE_STB
// #define OLC_PGE_APPLICATION
// #include "olcPixelGameEngine.h"

#if defined(OLC_IMAGE_STB)
#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"
namespace olc
{
	class ImageLoader_STB : public olc::ImageLoader
	{
	public:
		ImageLoader_STB() : ImageLoader()
		{}

		olc::rcode LoadImageResource(olc::Sprite* spr, const std::string& sImageFile, olc::ResourcePack* pack) override
		{
			UNUSED(pack);
			// clear out existing sprite
			if (spr->pColData != nullptr) delete[] spr->pColData;
			// Open file
			stbi_uc* bytes = nullptr;
			int w = 0, h = 0, cmp = 0;
			if (pack != nullptr)
			{
				ResourceBuffer rb = pack->GetFileBuffer(sImageFile);
				bytes = stbi_load_from_memory((unsigned char*)rb.vMemory.data(), rb.vMemory.size(), &w, &h, &cmp, 4);
			}
			else
			{
				// Check file exists
				if (!_gfs::exists(sImageFile)) return olc::rcode::NO_FILE;
				bytes = stbi_load(sImageFile.c_str(), &w, &h, &cmp, 4);
			}

			if (!bytes) return olc::rcode::FAIL;
			spr->width = w; spr->height = h;
			spr->pColData = new Pixel[spr->width * spr->height];
			std::memcpy(spr->pColData, bytes, spr->width * spr->height * 4);
			delete[] bytes;