PNG loading and major refactoring.

PNG loading is not working properly yet.

src/character.cpp

@@ -35,4 +35,11 @@ namespace cloonel {
 	void Character::Destroy() noexcept {
 		m_texture->Destroy();
 	}
+
+	///-------------------------------------------------------------------------
+	///-------------------------------------------------------------------------
+	void Character::Draw() const {
+		const int2 pos(m_pos + 0.5f);
+		m_texture->Render(pos);
+	}
 } //namespace cloonel

src/character.hpp

@@ -2,6 +2,7 @@
 #define id0CEACFB045ED4C9F8688265AA41E30B0
 
 #include "placeable.hpp"
+#include "drawable.hpp"
 #include "vector.hpp"
 #include <string>
 #include <memory>
@@ -10,14 +11,15 @@ namespace cloonel {
 	class SDLMain;
 	class Texture;
 
-	class Character : public Placeable {
+	class Character : public Placeable, public Drawable {
 	public:
 		Character ( const std::string& parPath, SDLMain* parMain );
 		Character ( const std::string&& parPath, SDLMain* parMain );
-		~Character ( void ) noexcept;
+		virtual ~Character ( void ) noexcept;
 
 		void Prepare ( void );
 		void Destroy ( void ) noexcept;
+		virtual void Draw ( void ) const;
 
 	private:
 		const std::unique_ptr<Texture> m_texture;

src/drawable.hpp

@@ -0,0 +1,14 @@
+#ifndef idC5A880D06A03407DB4E9FC21593A47FB
+#define idC5A880D06A03407DB4E9FC21593A47FB
+
+namespace cloonel {
+	class Drawable {
+	public:
+		Drawable ( void ) = default;
+		virtual ~Drawable ( void ) noexcept = default;
+
+		virtual void Draw ( void ) const = 0;
+	};
+} //namespace cloonel
+
+#endif

src/gamebase.hpp

@@ -19,6 +19,8 @@ namespace cloonel {
 		virtual void Prepare ( void ) = 0;
 		virtual void Destroy ( void ) noexcept = 0;
 
+		SDLMain* SDLObject ( void ) { return m_sdlmain; }
+
 	private:
 		virtual void OnRender ( void ) = 0;
 		virtual void OnUpdate ( float parDelta ) = 0;

src/gameplayscene.cpp

@@ -1,5 +1,6 @@
 #include "gameplayscene.hpp"
 #include "mover.hpp"
+#include "drawable.hpp"
 
 namespace cloonel {
 	///--------------------------------------------------------------------------
@@ -20,5 +21,8 @@ namespace cloonel {
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
 	void GameplayScene::OnRender() {
+		for (auto itDrawable : m_drawables) {
+			itDrawable->Draw();
+		}
 	}
 } //namespace cloonel

src/gameplayscene.hpp

@@ -2,23 +2,27 @@
 #define id1DF84BC48C0547D69F79499E3A25BFC5
 
 #include <vector>
+#include <cassert>
 #include "gamebase.hpp"
 
 namespace cloonel {
 	class Mover;
+	class Drawable;
 
 	class GameplayScene : public GameBase {
 	public:
 		explicit GameplayScene ( SDLMain* parSdlMain );
 		virtual ~GameplayScene ( void ) noexcept = default;
 
-		void AddMover ( Mover* parMover ) { m_movers.push_back(parMover); }
+		void AddMover ( Mover* parMover ) { assert(parMover); m_movers.push_back(parMover); }
+		void AddDrawable ( const Drawable* parDrawable ) { assert(parDrawable); m_drawables.push_back(parDrawable); }
 
 	private:
 		virtual void OnRender ( void );
 		virtual void OnUpdate ( float parDelta );
 
 		std::vector<Mover*> m_movers;
+		std::vector<const Drawable*> m_drawables;
 	};
 } //namespace cloonel
 

src/gameplaysceneclassic.cpp

@@ -1,10 +1,17 @@
 #include "gameplaysceneclassic.hpp"
+#include "character.hpp"
+#include "moversine.hpp"
+#include <algorithm>
 
 namespace cloonel {
+	struct GameplaySceneClassic::LocalData {
+	};
+
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
 	GameplaySceneClassic::GameplaySceneClassic (SDLMain* parSdlMain) :
-		GameplayScene(parSdlMain)
+		GameplayScene(parSdlMain),
+		m_local(new LocalData)
 	{
 	}
 
@@ -17,10 +24,23 @@ namespace cloonel {
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
 	void GameplaySceneClassic::Prepare() {
+		std::unique_ptr<MoverSine> moverSine(new MoverSine());
+		std::unique_ptr<Character> player(new Character("resources/graphics/player.png", SDLObject()));
+
+		player->Prepare();
+		player->SwapMover(moverSine.get());
+
+		std::swap(moverSine, m_moverSine);
+		std::swap(player, m_player);
+
+		AddMover(m_moverSine.get());
+		AddDrawable(m_player.get());
 	}
 
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
 	void GameplaySceneClassic::Destroy() noexcept {
+		m_moverSine = std::move(std::unique_ptr<MoverSine>(nullptr));
+		m_player = std::move(std::unique_ptr<Character>(nullptr));
 	}
 } //namespace cloonel

src/gameplaysceneclassic.hpp

@@ -2,9 +2,12 @@
 #define idF6FF1F57C36842DC9B20E2F55C507C2E
 
 #include "gameplayscene.hpp"
+#include <memory>
 
 namespace cloonel {
 	class SDLMain;
+	class Character;
+	class MoverSine;
 
 	class GameplaySceneClassic : public GameplayScene {
 	public:
@@ -15,6 +18,11 @@ namespace cloonel {
 		virtual void Destroy ( void ) noexcept;
 
 	private:
+		struct LocalData;
+
+		const std::unique_ptr <LocalData> m_local;
+		std::unique_ptr<Character> m_player;
+		std::unique_ptr<MoverSine> m_moverSine;
 	};
 } //namespace cloonel
 

src/main.cpp

@@ -10,27 +10,25 @@ namespace {
 	///-------------------------------------------------------------------------
 	///-------------------------------------------------------------------------
 	void RunMainLoop (cloonel::GameplaySceneClassic& parGame) {
+		parGame.Prepare();
 		do {
 			parGame.Exec();
 		} while (not parGame.WantsToQuit());
+		parGame.Destroy();
 	}
 } //unnamed namespace
 
 ///----------------------------------------------------------------------------
 ///following http://twinklebeardev.blogspot.co.uk/2012/07/lesson-1-hello-world.html
 ///----------------------------------------------------------------------------
-int main (int, char* []) {
+int main (int, char* parArgv[]) {
 	std::cout << GameName << " v" << GameVersionMajor << "." << GameVersionMinor << std::endl;
 
 	int retVal = 0;
 	cloonel::SDLMain sdlmain(GameName, DEF_WIN_WIDTH, DEF_WIN_HEIGHT);
 	try {
-#if defined(NDEBUG)
-		cloonel::PhysicsFSWrapper physfs(parArgc[0]);
-#else
-		cloonel::PhysicsFSWrapper physfs(GAME_BASE_PATH);
-#endif
-		physfs.Append("resources", "resources");
+		cloonel::PhysicsFSWrapper physfs(parArgv[0]);
+		physfs.Append(GAME_BASE_PATH "/resources/", "resources");
 
 		sdlmain.Init();
 

src/mover.cpp

@@ -1,12 +1,38 @@
 #include "mover.hpp"
 #include "placeable.hpp"
 #include <cassert>
+#include <algorithm>
 
 namespace cloonel {
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
-	void Mover::ApplyOffsetToPlaceable (std::size_t parIndex, const float2& parOffset) {
-		assert(m_placeables[parIndex]);
-		m_placeables[parIndex]->AddOffset(parOffset);
+	void Mover::ApplyOffsetToPlaceables (const float2& parOffset) {
+		for (Placeable* currPlaceable : m_placeables) {
+			if (currPlaceable) {
+				currPlaceable->AddOffset(parOffset);
+			}
+		}
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	int Mover::RegisterPlaceable (Placeable* parPlaceable) {
+		assert(parPlaceable);
+		m_placeables.push_back(parPlaceable);
+		const std::size_t retVal = m_placeables.size();
+		return static_cast<int>(retVal);
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void Mover::UnregisterPlaceable (int parID) {
+		assert(static_cast<std::size_t>(parID) <= m_placeables.size());
+		assert(m_placeables[parID - 1]);
+
+		m_placeables[parID - 1] = nullptr;
+		auto lastNull = std::find_if(m_placeables.rbegin(), m_placeables.rend(), [](const Placeable* parPlaceable) { return nullptr != parPlaceable; });
+		if (m_placeables.rend() != lastNull) {
+			m_placeables.resize(m_placeables.size() - (lastNull - m_placeables.rbegin()) + 1);
+		}
 	}
 } //namespace cloonel

src/mover.hpp

@@ -13,12 +13,13 @@ namespace cloonel {
 		virtual ~Mover ( void ) noexcept = default;
 
 		virtual void ApplyMotion ( float parDelta ) = 0;
-		void AddPlaceable ( Placeable* parPlaceable ) { m_placeables.push_back(parPlaceable); }
+		int RegisterPlaceable ( Placeable* parPlaceable );
+		void UnregisterPlaceable ( int parID );
 
 	protected:
 		virtual void Update ( float parDelta ) = 0;
 		std::size_t PlaceableCount ( void ) const { return m_placeables.size(); }
-		void ApplyOffsetToPlaceable ( std::size_t parIndex, const float2& parOffset );
+		void ApplyOffsetToPlaceables ( const float2& parOffset );
 
 	private:
 		std::vector<Placeable*> m_placeables;

src/moveroneshot.cpp

@@ -6,9 +6,6 @@ namespace cloonel {
 	void MoverOneShot::ApplyMotion (float parDelta) {
 		Update(parDelta);
 		const float2 offs(GetOffset());
-		const std::size_t placeableCount = PlaceableCount();
-		for (std::size_t z = 0; z < placeableCount; ++z) {
-			ApplyOffsetToPlaceable(z, offs);
-		}
+		ApplyOffsetToPlaceables(offs);
 	}
 } //namespace cloonel

src/placeable.cpp

@@ -1,10 +1,29 @@
 #include "placeable.hpp"
+#include "mover.hpp"
+#include <cassert>
 
 namespace cloonel {
 	///-------------------------------------------------------------------------
 	///-------------------------------------------------------------------------
 	Placeable::Placeable (float parX, float parY) :
-		m_pos(parX, parY)
+		m_pos(parX, parY),
+		m_mover(nullptr),
+		m_idForMover(0)
 	{
 	}
+
+	///-------------------------------------------------------------------------
+	///-------------------------------------------------------------------------
+	void Placeable::SwapMover (Mover* parMover) {
+		if (m_mover) {
+			assert(0 != m_idForMover);
+			m_mover->UnregisterPlaceable(m_idForMover);
+			m_idForMover = 0;
+			m_mover = nullptr;
+		}
+		if (parMover) {
+			m_idForMover = parMover->RegisterPlaceable(this);
+			m_mover = parMover;
+		}
+	}
 } //namespace cloonel

src/placeable.hpp

@@ -4,16 +4,24 @@
 #include "vector.hpp"
 
 namespace cloonel {
+	class Mover;
+
 	class Placeable {
 	public:
 		const float2& GetPos ( void ) const noexcept { return m_pos; }
 		void AddOffset ( const float2& parOffset ) noexcept { m_pos += parOffset; }
 
+		void SwapMover ( Mover* parMover );
+
 	protected:
 		Placeable ( float parX, float parY );
 		~Placeable ( void ) noexcept = default;
 
 		float2 m_pos;
+
+	private:
+		Mover* m_mover;
+		int m_idForMover;
 	};
 } //namespace cloonel
 

src/texture.cpp

@@ -8,12 +8,31 @@
 #include <ciso646>
 #include <png.h>
 
+#define lengthof(a) (static_cast<int32_t>(sizeof(a)) / static_cast<int32_t>(sizeof(a[0])))
+
 namespace cloonel {
 	namespace {
 		enum GraphicFormat {
 			GraphicFormat_Unknown,
 			GraphicFormat_Png
 		};
+
+		enum ColorChannelMask {
+#if SDL_BYTE_ORDER == SDL_BIGENDIAN
+			ColorChannelMask_Red = 0xff000000,
+			ColorChannelMask_Green = 0xff0000,
+			ColorChannelMask_Blue = 0xff00,
+			ColorChannelMask_Alpha = 0xff
+#elif SDL_BYTE_ORDER == SDL_LITTLEENDIAN
+			ColorChannelMask_Red = 0xff,
+			ColorChannelMask_Green = 0xff00,
+			ColorChannelMask_Blue = 0xff0000,
+			ColorChannelMask_Alpha = 0xff000000
+#else
+#	error "Unknonwn endianness"
+#endif
+		};
+
 		struct GraphicFormatItem {
 			const char* extension;
 			size_t length;
@@ -26,8 +45,34 @@ namespace cloonel {
 
 		GraphicFormat GuessGraphicFormatFromName (const std::string& parPath) __attribute__((pure));
 
-		///--------------------------------------------------------------------
-		///--------------------------------------------------------------------
+		///----------------------------------------------------------------------
+		///----------------------------------------------------------------------
+		SDL_Surface* SurfaceFromPngRGBA (ushort2 parSize, int parBpp, const png_structp& parPngPtr, const png_infop& parInfoPtr) {
+			const png_size_t stride = png_get_rowbytes(parPngPtr, parInfoPtr);
+			assert(stride > 0);
+
+			std::unique_ptr<uint8_t[]> image(new uint8_t[stride * parSize.y()]);
+			uint8_t* const imagePtr = image.get();
+			for (uint16_t y = 0; y < parSize.y(); ++y) {
+				png_read_row(parPngPtr, imagePtr + stride * y, nullptr);
+			}
+
+			SDL_Surface* const retSurf = SDL_CreateRGBSurfaceFrom(
+				imagePtr,
+				parSize.x(),
+				parSize.y(),
+				parBpp,
+				static_cast<int>(stride),
+				ColorChannelMask_Red,
+				ColorChannelMask_Green,
+				ColorChannelMask_Blue,
+				ColorChannelMask_Alpha
+			);
+			return retSurf;
+		}
+
+		///----------------------------------------------------------------------
+		///----------------------------------------------------------------------
 		GraphicFormat GuessGraphicFormatFromName (const std::string& parPath) {
 			const size_t dotPos = parPath.find_last_of('.');
 			if (parPath.npos == dotPos) {
@@ -44,27 +89,82 @@ namespace cloonel {
 			return GraphicFormat_Unknown;
 		}
 
-		///--------------------------------------------------------------------
-		///--------------------------------------------------------------------
+		///----------------------------------------------------------------------
+		///----------------------------------------------------------------------
+		void ReadDataFromInputStream (png_structp parPngPtr, png_bytep parOutBytes, png_size_t parByteCountToRead) {
+			if (not png_get_io_ptr(parPngPtr))
+				return;
+			PhysicsFSFile& rawfile = *static_cast<PhysicsFSFile*>(png_get_io_ptr(parPngPtr));
+
+			const int64_t read = rawfile.Read(static_cast<void*>(parOutBytes), static_cast<uint32_t>(parByteCountToRead), 1);
+			if (read != static_cast<int64_t>(parByteCountToRead))
+				return;
+
+			return;
+		}
+
+		///----------------------------------------------------------------------
+		///http://blog.hammerian.net/2009/reading-png-images-from-memory/
+		///----------------------------------------------------------------------
 		SDL_Surface* LoadNewPngSurface (const std::string& parPath) {
 			PhysicsFSFile rawfile(parPath.c_str(), PhysicsFSFile::OpenMode_Read, "graphics");
 			unsigned char header[8];
 			assert(rawfile.IsOpen());
 
-			rawfile.Read(header, 8, 1);
-			if (png_sig_cmp(header, 0, 8))
+			//Read the signature from the input stream
+			rawfile.Read(header, lengthof(header), 1);
+			if (png_sig_cmp(header, 0, lengthof(header)))
 				return nullptr;
 
-      png_structp pngptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, nullptr, nullptr, nullptr);
-      if (not pngptr)
-        return nullptr;
+			//Get the file info struct
+			png_structp pngptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, nullptr, nullptr, nullptr);
+			if (not pngptr)
+				return nullptr;
 
-			return nullptr;
+			//Get the data info struct
+			png_infop infoptr = png_create_info_struct(pngptr);
+			if (not infoptr) {
+				png_destroy_read_struct(&pngptr, nullptr, nullptr);
+				return nullptr;
+			}
+
+			//Set the function that will be called to read data from the stream
+			png_set_read_fn(pngptr, &rawfile, ReadDataFromInputStream);
+			//Tell the lib we already verified the signature
+			png_set_sig_bytes(pngptr, lengthof(header));
+
+			//Read the header
+			png_uint_32 width, height;
+			int bitDepth, colorType;
+			png_read_info(pngptr, infoptr);
+			const png_uint_32 headerGetInfoRetVal = png_get_IHDR(pngptr, infoptr, &width, &height, &bitDepth, &colorType, nullptr, nullptr, nullptr);
+			if (static_cast<png_uint_32>(-1) == headerGetInfoRetVal) {
+				png_destroy_read_struct(&pngptr, &infoptr, nullptr);
+				return nullptr;
+			}
+
+			SDL_Surface* retSurf;
+			switch (colorType) {
+			case PNG_COLOR_TYPE_RGB:
+				retSurf = nullptr; //SurfaceFromPngRGB();
+				assert(false); //not implemented
+				break;
+
+			case PNG_COLOR_TYPE_RGB_ALPHA:
+				retSurf = SurfaceFromPngRGBA(ushort2(static_cast<uint8_t>(width), static_cast<uint8_t>(height)), bitDepth * 4, pngptr, infoptr);
+				break;
+
+			default:
+				png_destroy_read_struct(&pngptr, &infoptr, nullptr);
+				retSurf = nullptr;
+			}
+
+			return retSurf;
 		}
 	} //unnamed namespace
 
-	///------------------------------------------------------------------------
-	///------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
 	Texture::Texture (const std::string& parPath, SDLMain* parMain, bool parLoadNow) :
 		m_path(parPath),
 		m_texture(nullptr),
@@ -74,14 +174,14 @@ namespace cloonel {
 			Reload();
 	}
 
-	///------------------------------------------------------------------------
-	///------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
 	Texture::~Texture() noexcept {
 		Destroy();
 	}
 
-	///------------------------------------------------------------------------
-	///------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
 	void Texture::Destroy() noexcept {
 		if (m_texture) {
 			SDL_DestroyTexture(m_texture);
@@ -89,8 +189,8 @@ namespace cloonel {
 		}
 	}
 
-	///------------------------------------------------------------------------
-	///------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
 	void Texture::Reload() {
 		const GraphicFormat fmt = GuessGraphicFormatFromName(m_path);
 		Destroy();
@@ -99,6 +199,7 @@ namespace cloonel {
 		switch (fmt) {
 		case GraphicFormat_Png:
 			surf = LoadNewPngSurface(m_path.c_str());
+			break;
 
 		default:
 			throw std::runtime_error(std::string("Unsupported file format for \"") + m_path + "\"");
@@ -116,9 +217,9 @@ namespace cloonel {
 		}
 	}
 
-	///------------------------------------------------------------------------
-	///------------------------------------------------------------------------
-	void Texture::Render (const int2& parPos) {
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void Texture::Render (int2 parPos) const {
 		assert(IsLoaded());
 		const SDL_Rect dest = { parPos.x(), parPos.y(), m_size.x(), m_size.y() };
 		SDL_RenderCopy(m_sdlmain->GetRenderer(), m_texture, nullptr, &dest);

src/texture.hpp

@@ -17,7 +17,7 @@ namespace cloonel {
 		void Reload ( void );
 		void Destroy ( void ) noexcept;
 		bool IsLoaded ( void ) const { return nullptr != m_texture; }
-		void Render ( const int2& parPos );
+		void Render ( int2 parPos ) const;
 
 	private:
 		const std::string m_path;