Elysian Shadows

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	Texture temp;
	
	/*
	Draw simple white text to the screen
	*/
	void RenderText(TTF_Font* font, Vector2& position, const char *fmt, ...){
		//Holds the string
		char text[256];
		int h,w;

		//Color for the text
		SDL_Color color;
		color.r = 255;
		color.g = 255;
		color.b = 255;

		// Pointer to list of arguments
		va_list ap;

		// If There's no text, do nothing
		if (fmt == NULL)
				return;

		// Parses the string for variables
		va_start(ap, fmt);
				vsprintf(text, fmt, ap);
		va_end(ap);

		//Create the font texture
		SDL_Surface *initial = TTF_RenderText_Blended(font, text, color);
		h = initial->h;
		w = initial->w;
		Texture texture = createGLTexture(initial);

		//Temporary vars
		Rect dimensions = Rect(position.getX(), position.getY(), texture.getHeight(), texture.getWidth());
		Rect source = Rect(0, 0, texture.getHeight(), texture.getWidth());

		//Draw the text
		drawQuad(texture, dimensions, source);
	}
	
	/*
	Draw simple textured quad
	*/
	void drawQuad(Texture &texture, Rect &dimensions, Rect &source){
			//Bind the texture (will be the texture used for this quad)
			glBindTexture(GL_TEXTURE_2D, texture.getTexture());

			//Calculate texture coords
			float min_x = (float)(source.getX())/texture.getWidth();
			float min_y = (float)(source.getY())/texture.getHeight();
			float max_x = (float)(source.getX() + source.getWidth())/texture.getWidth();
			float max_y = (float)(source.getY() + source.getHeight())/texture.getHeight();

			//Draw the quad to the screen
			glBegin(GL_QUADS);
					glTexCoord2f(min_x, max_y); glVertex2i(dimensions.getX(), dimensions.getY() + dimensions.getHeight());
					glTexCoord2f(min_x, min_y); glVertex2i(dimensions.getX(), dimensions.getY());
					glTexCoord2f(max_x, min_y); glVertex2i(dimensions.getX() + dimensions.getWidth(), dimensions.getY());
					glTexCoord2f(max_x, max_y); glVertex2i(dimensions.getX() + dimensions.getWidth(), dimensions.getY() + dimensions.getHeight());
			glEnd();

			glLoadIdentity();
	}
	
	/*
	Create a texture from sdl_surface
	*/
	Texture& createGLTexture(SDL_Surface* tex){
		//Declare a GL texture
		GLuint texture = 0;

		if(tex){
				//Bind the texture
				glGenTextures(1, &texture);
				glBindTexture(GL_TEXTURE_2D, texture);
		   
				//Get the height and width of the texture and bpp
				int width = tex->w;
				int height = tex->h;
				int bpp = tex->format->BitsPerPixel;

				//Set the mode
				int mode = GL_RGB;

				//Check bpp
				if(bpp == 32)
					 mode = GL_RGBA;

				//Generate the texture
				glTexImage2D( GL_TEXTURE_2D, 0, tex->format->BytesPerPixel,
							 width, height, 0, mode, GL_UNSIGNED_BYTE, tex->pixels );

				//Set texture parameters
				glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
				glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

				//Free the SDL_surface
				SDL_FreeSurface(tex);

				//Create the new texture
				temp = Texture(texture, height, width);
		}

		//Return the texture
		return temp;
}