introduced opengl texture object

Texture.h

@@ -12,49 +12,56 @@ http://mozilla.org/MPL/2.0/.
 #include <string>
 #include "opengl/glew.h"
 
+struct opengl_texture {
+
+    GLuint id{ -1 }; // associated GL resource
+    bool has_alpha{ false }; // indicates the texture has alpha channel
+    bool is_ready{ false }; // indicates the texture was processed and is ready for use
+    std::string name; // name of the texture source file
+    std::vector<char> data; // texture data
+    /*std::atomic<bool>*/ bool is_loaded{ false }; // indicates the texture data was loaded and can be processed
+    /*std::atomic<bool>*/ bool is_good{ false }; // indicates the texture data was retrieved without errors
+};
+
+class texture_manager {
+
+private:
+    typedef std::vector<opengl_texture> opengltexture_array;
+
+public:
+    typedef opengltexture_array::size_type size_type;
+
+    ~texture_manager() { Free(); }
+
+    size_type GetTextureId( std::string Filename, std::string const &Dir, int const Filter = -1 );
+    opengl_texture &Texture( size_type const Id ) { return m_textures.at( Id ); }
+    void Init();
+    void Free();
+
+private:
+    typedef std::unordered_map<std::string, size_type> index_map;
 /*
-//Ra: miejsce umieszczenia tego jest deczko bezsensowne
-void glDebug()
-{//logowanie błędów OpenGL
- GLenum err;
- if (Global::iErorrCounter==326) //tu wpisz o 1 mniej niz wartość, przy której się wyłożyło
-  Global::iErorrCounter=Global::iErorrCounter+0; //do zastawiania pułapki przed błędnym kodem
- while ((err=glGetError())!=GL_NO_ERROR) //dalej jest pułapka po wykonaniu błędnego kodu
-  WriteLog("OpenGL error found: "+AnsiString(err)+", step:"+AnsiString(Global::iErorrCounter));
- ++Global::iErorrCounter;
-};
+    opengltexture_array::size_type LoadFromFile(std::string name, int filter = -1);
 */
-
-class TTexturesManager
-{
-  public:
-    static void Init();
-    static void Free();
-
-    static GLuint GetTextureID(char *dir, char *where, std::string name, int filter = -1);
-    static bool GetAlpha(GLuint ID); // McZapkie-141203: czy tekstura ma polprzeroczystosc
-    static std::string GetName(GLuint id);
-
-  private:
-    typedef std::pair<GLuint, bool> AlphaValue;
-
-    typedef std::map<std::string, GLuint> Names;
-    typedef std::map<GLuint, bool> Alphas;
-
-    static Names::iterator LoadFromFile(std::string name, int filter = -1);
-
-    static AlphaValue LoadBMP(std::string const &fileName);
-    static AlphaValue LoadTEX(std::string fileName);
-    static AlphaValue LoadTGA(std::string fileName, int filter = -1);
-    static AlphaValue LoadDDS(std::string fileName, int filter = -1);
-
-    static void SetFiltering(int filter);
-    static void SetFiltering(bool alpha, bool hash);
-    static GLuint CreateTexture(GLubyte *buff, GLint bpp, int width, int height, bool bHasAlpha,
-                                bool bHash, bool bDollar = true, int filter = -1);
-
-    static Names _names;
-    static Alphas _alphas;
-    //    std::list<TTexture> Textures;
+/*
+    bool LoadBMP( std::string const &fileName);
+    bool LoadTEX( std::string fileName );
+    bool LoadTGA( std::string fileName, int filter = -1 );
+    bool LoadDDS( std::string fileName, int filter = -1 );
+*/
+    // checks whether specified texture is in the texture bank. returns texture id, or npos.
+    size_type find_in_databank( std::string const &Texturename );
+    // checks whether specified file exists. returns name of the located file, or empty string.
+    std::string find_on_disk( std::string const &Texturename );
+/*
+    void SetFiltering(int filter);
+    void SetFiltering(bool alpha, bool hash);
+    GLuint CreateTexture(GLubyte *buff, GLint bpp, int width, int height, bool bHasAlpha,
+                         bool bHash, bool bDollar = true, int filter = -1);
+*/
+    static const size_type npos{ 0 }; // should be -1, but the rest of the code uses -1 for something else
+    opengltexture_array m_textures;
+    index_map m_texturemappings;
 };
-//---------------------------------------------------------------------------
+
+extern texture_manager TTexturesManager;